PAPER DISPENSER

Abstract

A paper dispenser includes a base, paper dispensing portion and cover. The paper dispensing portion has two support members and a paper dispensing unit. The paper dispensing unit has an auxiliary roller, paper dispensing roller, swing unit and paper dispensing cutter disposed at the swing unit. The paper dispensing cutter swings between the inside and outside of a receiving groove of the paper dispensing roller. The support members each have a roll resilient positioning unit, arcuate pivotal connection unit and cam guide groove surrounding the pivotal connection unit and being closed. Two sides of the paper dispensing roller are pivotally disposed at one end of the pivotal connection unit. The guide unit is movably disposed at the cam guide groove. The cover is pivotally disposed at the base and has a paper discharge hole. The paper dispensing portion is disposed between the cover and base.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to paper dispensers, and in particular to a paper dispenser having a paper dispensing roller and a paper dispensing cutter integrated into the paper dispensing roller to reduce the volume of the paper dispenser.

2. Description of the Related Art

Paper dispensers each contain continuous paper wrapped around a reel and dispense the paper of a constant length to users. However, a conventional paper dispenser comprises a paper dispensing roller and a paper dispensing cutter disposed outside the paper dispensing roller to cut the continuous paper, so as to dispense the paper of a constant length. As a result, the paper dispensing cutter and paper dispensing roller of the conventional paper dispenser take up much space and thus render the conventional paper dispenser bulky.

BRIEF SUMMARY OF THE INVENTION

An objective of the present disclosure is to provide a paper dispenser with a paper dispensing roller and a paper dispensing cutter integrated into the paper dispensing roller to reduce the volume of the paper dispenser.

To achieve at least the above objective, the present disclosure provides a paper dispenser comprising a base, a paper dispensing portion and a cover. The paper dispensing portion has two support members and a paper dispensing unit, the paper dispensing unit having at least an auxiliary roller, a paper dispensing roller, a swing unit and a paper dispensing cutter, wherein the auxiliary roller and the paper dispensing roller press against each other to deliver a roll of a paper, the paper dispensing roller having a receiving groove, the swing unit having two swing arms and a cutter holder, wherein two ends of the swing arms have a pivotal connection unit and a guide unit, respectively, wherein two sides of the cutter holder are disposed at the swing arms, respectively, and disposed between the pivotal connection unit and the guide unit of each swing arm, wherein the paper dispensing cutter is disposed at the cutter holder, wherein the pivotal connection units of the swing arms are pivotally disposed on two sides of the paper dispensing roller, respectively, and disposed on the same side of the receiving groove, wherein the paper dispensing cutter swings between the inside and outside of the receiving groove, wherein the support members each have a roll resilient positioning unit, a pivotal connection unit and a cam guide groove. The pivotal connection units of the support members are arcuate, the cam guide groove surrounds the pivotal connection units of the support members and is closed. The two sides of the paper dispensing roller are pivotally disposed at the same end of the pivotal connection units of the support members. The guide units of the swing arms are movably disposed at the cam guide grooves of the support members. The auxiliary roller is pivotally disposed between the support members. The support members are pivotally disposed at the base. The cover is disposed at the base and has a paper discharge hole. The cover covers the base. The paper dispensing portion is disposed between the cover and the base.

In an embodiment, a side of the cover is pivotally disposed on a side of the base by two damping axles, and a side of each said support member is pivotally disposed on an opposing side of the base by a damping axle, wherein the cover and the paper dispensing portion rotate in opposite directions, wherein another side of the cover has an engaging unit engaged with an engaging unit on another side of the base, wherein another side of each said support member has an engaging unit engaged with an engaging unit of the base.

In an embodiment, one of the support members has an electrical processing unit, a driving portion and a power supply unit, with the driving portion having a driving unit, a transmission unit and a unidirectional gear, with the power supply unit being electrically connected to the electrical processing unit, with the electrical processing unit being electrically connected to the driving unit, with the driving unit being connected to the transmission unit, with the transmission unit being connected to the unidirectional gear, with the unidirectional gear being connected to the paper dispensing roller, wherein the driving unit drives, through the transmission unit and the unidirectional gear, the paper dispensing roller to rotate in a direction of outputting the paper out of the paper discharge hole.

In an embodiment, the unidirectional gear is connected to a magnetic switch rotational member, wherein two ends of the magnetic switch rotational member each have a magnetic member, with the electrical processing unit having a magnetic sensing unit corresponding in position to one of the magnetic members.

In an embodiment, the unidirectional gear is connected to a manually-operated rotational member exposed from the support members and the cover.

In an embodiment, the electrical processing unit has an infrared sensing unit, and the cover has a light-penetrable board, allowing the infrared sensing unit to sense a human hand through the light-penetrable board.

In an embodiment, the electrical processing unit has a paper inadequacy informing unit having a roll detection unit, a link unit and a lift switch, with the roll detection unit resiliently pivotally disposed at the support members and having a driving hollow, with the link unit having two ends flanking pivotally the support members, wherein the link unit has an end movably connected to the driving hollow and another end connected to the lift switch.

In an embodiment, one of the support members has an auxiliary driving portion having a gear, a stop arm and a resilient unit, with the gear being connected to the paper dispensing roller and having a plurality of bevel gears and a pivotal connection unit, wherein two ends of the resilient unit are disposed at the pivotal connection unit and the support members of the gear, respectively, where two ends of the stop arm have a stop end and a resilient pivotal connection unit, respectively, wherein the resilient pivotal connection unit is pivotally disposed at the support members to drive the stop end stopping between the bevel gears, and thus the paper dispensing roller rotates in a direction of outputting the paper out of the paper discharge hole.

In an embodiment, two sides of the paper dispensing roller have a pivotal connection unit and a fixing frame, respectively, wherein the pivotal connection unit of the paper dispensing roller is on the same side as the receiving groove, wherein the pivotal connection units of the swing arms are pivotally disposed at the pivotal connection units of the paper dispensing roller and positioned in place by the fixing frame.

In an embodiment, the paper dispensing portion has a cover and a positioning frame. The cover and the positioning frame are disposed between the support members. The auxiliary roller and the paper dispensing roller are disposed at the positioning frame. The cover is on the front side of the paper dispensing roller. The cover has an auxiliary roller. The auxiliary roller and the paper dispensing roller press against each other to deliver the paper.

Therefore, the paper dispenser of the present disclosure integrates a paper dispensing cutter into a paper dispensing roller to reduce the volume of the paper dispenser.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a paper dispenser opened according to an embodiment of the present disclosure.

FIG. 2 is a schematic view of the paper dispenser covered according to an embodiment of the present disclosure.

FIG. 3 is a schematic view of the paper dispenser taken from another angle of view and shown in FIG. 2.

FIG. 4 is an exploded view of the paper dispenser according to an embodiment of the present disclosure.

FIG. 5 is a schematic view of a paper dispensing portion taken from another angle of view and shown in FIG. 4.

FIG. 6 is a cutaway view 1 of the paper dispensing portion according to an embodiment of the present disclosure.

FIG. 7 is a schematic view of a paper inadequacy informing unit according to an embodiment of the present disclosure.

FIG. 8 is a cutaway view 2 of the paper dispensing portion according to an embodiment of the present disclosure.

FIG. 9 is an exploded view 1 of the paper dispensing portion according to an embodiment of the present disclosure.

FIG. 10 is an exploded view 2 of the paper dispensing portion according to an embodiment of the present disclosure.

FIG. 11 is an exploded view 3 of the paper dispensing portion according to an embodiment of the present disclosure.

FIG. 12 is a schematic view of operation of a paper dispensing cutter of a paper dispensing roller according to an embodiment of the present disclosure.

FIG. 13 is a schematic view of operation of a paper dispensing cutter of a paper dispensing roller taken from another angle of view and shown in FIG. 11.

FIG. 14 is a cross-sectional view of the paper dispensing cutter before operation according to an embodiment of the present disclosure.

FIG. 15 is a cross-sectional view of the paper dispensing cutter after operation according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION

To facilitate understanding of the object, characteristics and effects of this present disclosure, embodiments together with the attached drawings for the detailed description of the present disclosure are provided.

Referring to FIG. 1 through FIG. 11, the present disclosure provides a paper dispenser comprising a base 10, a paper dispensing portion 1 and a cover 20. The paper dispensing portion 1 has two support members 12, 13 and a paper dispensing unit 11. The paper dispensing unit 11 has at least an auxiliary roller 112, 113, a paper dispensing roller 111, a swing unit 114 and a paper dispensing cutter 115. Referring to FIG. 14, the paper dispenser of this embodiment is exemplified by two auxiliary rollers 112, 113. An increase in the number of the auxiliary rollers 112, 113 can enhance the efficiency of delivery of paper 91 and thus prevent a paper jam. Each auxiliary roller 112, 113 and the paper dispensing roller 111 press against each other to clamp and deliver a roll 9 of paper 91. A paper delivery surface 1112 of the paper dispensing roller 111 and paper delivery surfaces 1122, 1132 of the auxiliary rollers 112, 113 are made of rubber to thereby increase the friction required for the delivery of the paper 91. The paper dispensing roller 111 has a receiving groove 1113. The receiving groove 1113 extends in the axial direction of the paper dispensing roller 111 and has a V-shaped transverse cross section parallel to the radial direction of the paper dispensing roller 111. The swing unit 114 has two swing arms 1141 and a cutter holder 1144. Two ends of each swing arm 1141 each have a pivotal connection unit 1142 (for example, pivotal connection axle) and a guide unit 1143 (for example, guide axle). Two sides of the cutter holder 1144 are connected to the swing arms 1141, respectively, and between the pivotal connection unit 1142 and the guide unit 1143 of each swing arm 1141, respectively. The paper dispensing cutter 115 is fixed to the cutter holder 1144 and is serrate. The pivotal connection units 1142 of the swing arms 1141 are pivotally connected to two sides of the paper dispensing roller 111, respectively, and disposed on the same side of the receiving groove 1113. Referring to FIG. 9 through FIG. 11, the pivotal connection units 1142 of the swing arms 1141 are pivotally connected to the upper side of the receiving groove 1113. The swing unit 114 enables the paper dispensing cutter 115 to swing between the inside and outside of the receiving groove 1113. The support members 12, 13 each have a roll resilient positioning unit 125, 135 (for example, resilient positioning post), a pivotal connection unit 121, 131 (for example, a droplet-shaped post with a pivotal connection hole 1211, 1311) and a cam guide grooves 122, 132. The roll resilient positioning units 125, 135 resiliently extend and retract relative to the support members 12, 13 to position the central hole (shown in FIG. 1 and FIG. 14) of the roll 9 in place, respectively. The pivotal connection units 121, 131 of the support members 12, 13 are droplet-shaped posts with arcuate cross sections. The cam guide grooves 122, 132 surround the pivotal connection units 121, 131 of the support members 12, 13, respectively, from outside and are closed. Two sides of the paper dispensing roller 111 are pivotally connected to the pivotal connection holes 1211, 1311 at the front ends of the pivotal connection units 121, 131 of the support members 12, 13, respectively, through a pivotal connection unit 1111 (for example, pivotal connection axle). The guide units 1143 of the swing arms 1141 are movably disposed at the cam guide grooves 122, 132 of the support members 12, 13, respectively. The pivotal connection units 1121 (for example, pivotal connection axles) at the two ends of the auxiliary roller 112 are pivotally connected to the pivotal connection units 123, 133 (for example, pivotal connection holes) of the support members 12, 13, respectively. The pivotal connection units 1131 (for example, pivotal connection axles) at the two ends of the auxiliary roller 113 are pivotally connected to pivotal connection units 124, 134 (for example, pivotal connection holes) of the support members 12, 13, respectively. The rear sides of the bottoms of the support members 12, 13 are pivotally disposed at the base 10. The cover 20 is pivotally disposed at the base 10 and has a paper discharge hole 203. The cover 20 covers the base 10. The paper dispensing portion 1 is disposed between the cover 20 and the base 10.

Referring to FIG. 14, when a user pulls the paper 91, the paper dispensing roller 111 is driven by the paper 91 and thereby rotates counterclockwise. Referring to FIG. 9 through FIG. 13 and FIG. 15, the guide units 1143 disposed on the two sides of the swing unit 114 move to the rears of the cam guide grooves 122, 132 via the tops of the cam guide grooves 122, 132 under the guidance of the wall surfaces of the two sides of the cam guide grooves 122, 132 of the support members 12, 13, respectively, such that the guide units 1143 on the two sides of the swing unit 114 move away from the pivotal connection units 1111 on the two sides of the paper dispensing roller 111, respectively, thereby allowing the paper dispensing cutter 115 to cut and form a line of perforations (not shown) in the paper 91. Then, the user pulls the paper 91 to get the paper 91; meanwhile, the paper dispensing roller 111 is driven by the paper 91 and thus keeps rotating counterclockwise. The guide units 1143 on the two sides of the swing unit 114 move to the fronts of the cam guide grooves 122, 132 via the bottoms of the cam guide grooves 122, 132 under the guidance of the wall surfaces of the two sides of the cam guide grooves 122, 132 of the support members 12, 13, respectively, such that the guide units 1143 on the two sides of the swing unit 114 approach the pivotal connection units 1111 on the two sides of the paper dispensing roller 111, respectively, thereby causing the paper dispensing cutter 115 to retract and return to its initial position.

Therefore, the paper dispenser of the present disclosure is advantageous in that the paper dispensing cutter 115 is integrated into the paper dispensing roller 111 to reduce the volume of the paper dispenser. Furthermore, the paper dispenser of the present disclosure is also advantageous in that the base 10 has a plurality of fixing hole 105 (cruciform or keyhole-shaped), such that the paper dispenser of the present disclosure can be mounted in place upside down in a crowded environment or mounted at a spare position, so as to make good use of space.

Referring to FIG. 1, FIG. 2 and FIG. 4, in an embodiment, the pivotal connection units 201 (for example, pivotal connection holes) on two sides of the upper side of the cover 20 are pivotally disposed on two sides of the upper side of the base 10 by two damping axles 101, respectively. Rear sides of the bottoms of the support members 12, 13 are pivotally disposed at the pivotal connection units 102 (for example, pivotal connection holes) on the two sides of the lower side of the base 10 by two damping axles 126, 136, respectively. The cover 20 and the paper dispensing portion 1 rotate in opposite directions. For example, the cover 20 rotates counterclockwise, whereas the paper dispensing portion 1 rotates clockwise, such that the roll 9 of the paper dispenser of the present disclosure can be easily mounted in place. When the cover 20 is open, the damping axles 126, 136 prevent the instant escape of the paper dispensing portion 1 under its weight, protecting the paper dispenser of the present disclosure against damage.

Referring to FIG. 1, FIG. 2 and FIG. 4, in an embodiment, an engaging unit 204 (for example, engaging hole) is disposed on the lower side of the cover 20 to engage with an engaging unit 104 (for example, resilient engaging button) on the lower side of the base 10. Therefore, the cover 20 can be temporarily fixed to the base 10.

Referring to FIG. 1, FIG. 2, FIG. 4 and FIG. 5, in an embodiment, an engaging unit 1251, 1351 (for example, engaging groove) is disposed on each of the two sides of the upper sides of the support members 12, 13 to engage with the engaging units 103 (for example, resilient snap-engaging hooks) on the two sides of the base 10. Therefore, the paper dispensing portion 1 can be temporarily fixed to the base 10.

Referring to FIG. 2, FIG. 4 and FIG. 6, in an embodiment, the support members 12 each have therein an electrical processing unit 16 (for example, a control circuit board), a driving portion 14 and a power supply unit 17 (for example, a battery or utility power). The electrical processing unit 16, the driving portion 14 and the power supply unit 17 of the support member 12 is covered with a cover 120. The driving portion 14 has a driving unit 141 (for example, motor), a transmission unit 142 (for example, a gear train) and a unidirectional gear 143. The power supply unit 17 is electrically connected to the electrical processing unit 16. The electrical processing unit 16 is electrically connected to the driving unit 141. The driving unit 141 is connected to the transmission unit 142. The transmission unit 142 is connected to the unidirectional gear 143. The unidirectional gear 143 is connected to the paper dispensing roller 111. The transmission unit 142 and the unidirectional gear 143 enable the driving unit 141 to drive the paper dispensing roller 111 to rotate in the direction of outputting the paper 91 out of the paper discharge hole 203. Therefore, the unidirectional gear 143 drives unidirectionally (counterclockwise) the paper dispensing roller 111 to rotate, so as to extend the service life of the paper dispenser of the present disclosure. Thanks to the electrical processing unit 16 and the driving portion 14, the paper dispenser of the present disclosure allows the paper to be pulled out manually, both manually and electrically, or electrically, so as to meet practical user needs. In particular, in case of wet hands or fragile paper, the electrical processing unit 16 and the driving unit 141 can prevent the user from ending up pulling out a broken piece of paper.

Referring to FIG. 2, FIG. 4 and FIG. 6, in an embodiment, the unidirectional gear 143 is connected to a magnetic switch rotational member 1432. The two ends of the magnetic switch rotational member 1432 each have a magnetic member 1433 (for example, a magnet). The electrical processing unit 16 has a magnetic sensing unit 162 (for example, a magnetic sensor) corresponding in position to one of the magnetic members 1433. Therefore, thanks to the control exercised with the electrical processing unit 16, the driving unit 141, the magnetic sensing unit 162, and the magnetic members 1433 of the magnetic switch rotational member 1432, it is feasible for the paper dispensing roller 111 to rotate by at least a half of one revolution, so as to provide an appropriate number of pieces of paper to users. When the paper dispenser of the present disclosure is not in use, a small angle and distance between the magnetic sensing unit 162 and the magnetic members 1433 are allowable; hence, when the user pulls the paper to drive the rotation of the paper dispensing roller 111 and the magnetic switch rotational member 1432, the magnetic sensing unit 162 can start the driving unit 141 upon detection of the magnetic member 1433 right below and can shut down the driving unit 141 upon detection of the next magnetic member 1433.

Referring to FIG. 1 through FIG. 4 and FIG. 6, in an embodiment, the unidirectional gear 143 is connected to a manually-operated rotational member 1431. The manually-operated rotational member 1431 is exposed from positioning holes 1201 of the support members 12 and a through hole 205 of the cover 20. The magnetic switch rotational member 1432 is disposed in the manually-operated rotational member 1431. Therefore, to pull the paper 91 by hand, the user rotates the manually-operated rotational member 1431, and thus the unidirectional gear 143 enables the manually-operated rotational member 1431 to drive unidirectionally (counterclockwise) the rotation of the paper dispensing roller 111, thereby allowing the paper dispensing roller 111 to output the paper 91 toward the paper discharge hole 203.

Referring to FIG. 2, FIG. 4 and FIG. 6, in an embodiment, the electrical processing unit 16 has a central processing unit, a memory, a processing circuit, an alarm (for example, a buzzer or light-emitting member) and an infrared sensing unit 161. The cover 20 has a light-penetrable board 202. The light-penetrable board 202 enables the infrared sensing unit 161 to sense a human hand, allowing the paper dispenser of the present disclosure to provide the paper 91 in an electrically-driven manner. Alternatively, the electrical processing unit 16 estimates the amount of the paper 91 consumed according to the number of revolutions by which the driving unit 141 has rotated, so as for the alarm to generate a warning sound or light when the paper 91 is running out.

Referring to FIG. 1, FIG. 6 and FIG. 7, in an embodiment, the electrical processing unit 16 has a paper inadequacy informing unit 163. The paper inadequacy informing unit 163 has a roll detection unit 1631 (for example, a detection rod), a link unit 1635 (for example, a link rod) and a lift switch 1637. The roll detection unit 1631 has one end pivotally connected to a roll pressing roller 1632 for pressing against the roll 9 and the other end having a resilient pivotal connection member 1633 (for example, a resilient rotational member). The roll pressing roller 1632 and the roll detection unit 1631 are located outside the support members 12. The resilient pivotal connection member 1633 is located inside the support members 12. The other end of the roll detection unit 1631 is pivotally disposed at and penetrating the support members 12 so as to be connected to the resilient pivotal connection member 1633, such that the other end of the roll detection unit 1631 is resiliently, pivotally disposed at the support members 12. The resilient pivotal connection member 1633 has a driving hollow 1634. The link unit 1635 is disposed in the support member 12. A pivotal connection junction 1636 between two ends of the link unit 1635 is pivotally disposed at the support member 12. The link unit 1635 has one end movably connected to the driving hollow 1634 and the other end connected to the lift switch 1637. The lift switch 1637 is electrically connected to the processing circuit of the electrical processing unit 16 and disposed in the support member 12. Therefore, owing to the resilient pivotal connection member 1633, the roll pressing roller 1632 resiliently presses against the roll 9. The lesser the paper 91 of the roll 9 is, the smaller the diameter of the roll 9 is. As shown in FIG. 7, the resilient pivotal connection member 1633 drives the roll detection unit 1631 to rotate clockwise, and the driving hollow 1634 of the resilient pivotal connection member 1633 rotates clockwise to drive the movement of one end of the link unit 1635, such that the link unit 1635 rotates counterclockwise, allowing the other end of the link unit 1635 to press against the lift switch 1637. When the roll 9 is running out of paper, the lift switch 1637 causes the alarm to generate a paper inadequacy alert.

Referring to FIG. 8, in an embodiment, the support members 13 each have therein an auxiliary driving portion 15. The auxiliary driving portion 15 has a gear 151, a stop arm 152 and a resilient unit 153 (for example, an extension spring). A cover 130 of the support member 13 covers the auxiliary driving portion 15. The gear 151 is connected to the paper dispensing roller 111 and has a plurality of bevel gears 1511 and a pivotal connection unit 1531 (for example, a pivotal connection axle). The two ends of the resilient unit 153 are disposed at the pivotal connection unit 1531 of the gear 151 and the fixing unit 1532 (for example, a hook member) of the support member 13, respectively. The two ends of the stop arm 152 have a stop end 1521 and a resilient pivotal connection unit 1522 (for example, a pivotal connection member with a torsion spring), respectively. The resilient pivotal connection unit 1522 is pivotally disposed at the support members 13 to drive the stop end 1521 to stop between the bevel gears 1511, and thus the paper dispensing roller 111 rotates in the direction of discharging the paper out of the paper discharge hole. Referring to FIG. 8, the stop arm 152 enables the gear 151 and the paper dispensing roller 111 to rotate clockwise only. Therefore, when the user pulls the paper, the paper dispensing roller 111 of gear 151 of FIG. 8 rotates clockwise, the pivotal connection unit 1531 of gear 151 rotates clockwise, moves and stretches the resilient unit 153 to store resilient energy. After a line of perforations has been formed on the paper, the resilient unit 153 is stretched to attain its maximum length. Then, the resilient unit 153 shortens and releases the resilient energy, and in consequence the pivotal connection unit 1531 pulls and causes the gear 151 and the paper dispensing roller 111 to keep rotating clockwise, so as to assist the paper dispensing roller 111 in delivering the paper to users.

Referring to FIG. 9 through FIG. 11, in an embodiment, two sides of the paper dispensing roller 111 have a pivotal connection unit 1114 (for example, pivotal connection groove) and a fixing frame 1116, respectively. The pivotal connection units 1114 of the paper dispensing roller 111 are disposed on the upper side of the receiving groove 1113. The pivotal connection units 1142 of the swing arms 1141 are pivotally disposed at the pivotal connection unit 1114 of the paper dispensing roller 111 and fastened to the fixing unit 1115 (for example, a fixing hole) of the paper dispensing roller 111 by the fixing unit 1117 (for example, a fixing hole) of the fixing frame 1116 with bolts for the sake of positioning. Therefore, the swing unit 114 can be easily mounted on the paper dispensing roller 111.

Referring to FIG. 4 and FIG. 5, FIG. 9 through FIG. 11, in an embodiment, the paper dispensing portion 1 has a cover 117 and a positioning frame 116. The cover 117 and the positioning frame 116 are disposed between the support members 12, 13; in particular, the cover 117 is disposed on the front side of the paper dispensing roller 111. The pivotal connection units 1171 (for example, pivotal connection axles) on two sides of the cover 117 are pivotally connected to and engaged with the pivotal connection units 128, 138 (for example, engaging grooves) on the inner sides of the support members 12, 13, respectively. The engaging units 1172 (for example, resilient engaging hooks) on the two sides of the cover 117 are engaged with the engaging units 129, 139 (for example, engaging holes) on the inner sides of the support members 12, 13. Therefore, the user can open the cover 117 to repair the swing unit 114 and the paper dispensing cutter 115. The fixing units 1161 (for example, fixing holes) on the two sides of the positioning frame 116 are fixed to the fixing units 127, 137 (for example, fixing posts) on the inner sides of the support members 12, 13, respectively. The auxiliary rollers 112, 113 and the paper dispensing roller 111 are disposed at the positioning frame 116. Therefore, the positioning frame 116 prevents a paper jam.

Referring to FIG. 2 and FIG. 4, FIG. 14 and FIG. 15, in an embodiment, the cover 117 has an auxiliary roller 1173. The auxiliary roller 1173 and the paper dispensing roller 111 press against each other to clamp and deliver the paper 91. Therefore, the auxiliary roller 1173 of the cover 117 allows the paper 91 to discharge paper toward the paper discharge hole 203 precisely in order to prevent a paper jam.

While the present disclosure has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the present disclosure set forth in the claims.

Claims

1. A paper dispenser, comprising:

a base;

a paper dispensing portion having two support members and a paper dispensing unit, with the paper dispensing unit having at least an auxiliary roller, a paper dispensing roller, a swing unit and a paper dispensing cutter, wherein the auxiliary roller and the paper dispensing roller press against each other to deliver a roll of paper, with the paper dispensing roller having a receiving groove, with the swing unit having two swing arms and a cutter holder, wherein two ends of each said swing arm have a pivotal connection unit and a guide unit, respectively, wherein two sides of the cutter holder are disposed at the swing arms, respectively, and between the pivotal connection unit and the guide unit of each said swing arm, wherein the paper dispensing cutter is disposed at the cutter holder, and the pivotal connection units of the swing arms are pivotally disposed on two sides of the paper dispensing roller, respectively, and on the same side of the receiving groove, wherein the paper dispensing cutter swings between an inside and an outside of the receiving groove, wherein the support members each have a roll resilient positioning unit, a pivotal connection unit and a cam guide groove, with the pivotal connection unit being arcuate, with the cam guide groove surrounding the pivotal connection unit and being closed, wherein two sides of the paper dispensing roller are pivotally disposed at the same end of the pivotal connection units of the support members, respectively, wherein the guide units of the swing arms are movably disposed at the cam guide grooves of the support members, respectively, wherein the auxiliary roller is pivotally disposed between the support members, and the support members are disposed at the base; and

a cover pivotally disposed at the base, having a paper discharge hole, and covering the base, with the paper dispensing portion being disposed between the cover and the base.

2. The paper dispenser of claim 1, wherein a side of the cover is pivotally disposed on a side of the base by two damping axles, and a side of each said support member is pivotally disposed on an opposing side of the base by a damping axle, wherein the cover and the paper dispensing portion rotate in opposite directions, wherein another side of the cover has an engaging unit engaged with an engaging unit on another side of the base, wherein another side of each said support member has an engaging unit engaged with an engaging unit of the base.

3. The paper dispenser of claim 1, wherein one of the support members has an electrical processing unit, a driving portion and a power supply unit, with the driving portion having a driving unit, a transmission unit and a unidirectional gear, with the power supply unit being electrically connected to the electrical processing unit, with the electrical processing unit being electrically connected to the driving unit, with the driving unit being connected to the transmission unit, with the transmission unit being connected to the unidirectional gear, with the unidirectional gear being connected to the paper dispensing roller, wherein the driving unit drives, through the transmission unit and the unidirectional gear, the paper dispensing roller to rotate in a direction of outputting the paper out of the paper discharge hole.

4. The paper dispenser of claim 3, wherein the unidirectional gear is connected to a magnetic switch rotational member, wherein two ends of the magnetic switch rotational member each have a magnetic member, with the electrical processing unit having a magnetic sensing unit corresponding in position to one of the magnetic members.

5. The paper dispenser of claim 3, wherein the unidirectional gear is connected to a manually-operated rotational member exposed from the support members and the cover.

6. The paper dispenser of claim 3, wherein the electrical processing unit has an infrared sensing unit, and the cover has a light-penetrable board, allowing the infrared sensing unit to sense a human hand through the light-penetrable board.

7. The paper dispenser of claim 3, wherein the electrical processing unit has a paper inadequacy informing unit having a roll detection unit, a link unit and a lift switch, with the roll detection unit resiliently pivotally disposed at the support members and having a driving hollow, with the link unit having two ends flanking pivotally the support members, wherein the link unit has an end movably connected to the driving hollow and another end connected to the lift switch.

8. The paper dispenser of claim 1, wherein one of the support members has an auxiliary driving portion having a gear, a stop arm and a resilient unit, with the gear being connected to the paper dispensing roller and having a plurality of bevel gears and a pivotal connection unit, wherein two ends of the resilient unit are disposed at the pivotal connection unit and the support members of the gear, respectively, where two ends of the stop arm have a stop end and a resilient pivotal connection unit, respectively, wherein the resilient pivotal connection unit is pivotally disposed at the support members to drive the stop end stopping between the bevel gears, and thus the paper dispensing roller rotates in a direction of outputting the paper out of the paper discharge hole.

9. The paper dispenser of claim 1, wherein two sides of the paper dispensing roller have a pivotal connection unit and a fixing frame, respectively, wherein the pivotal connection unit of the paper dispensing roller is on the same side as the receiving groove, wherein the pivotal connection units of the swing arms are pivotally disposed at the pivotal connection units of the paper dispensing roller and positioned in place by the fixing frame.

10. The paper dispenser of claim 1, wherein the paper dispensing portion has a cover and a positioning frame, wherein the cover and the positioning frame are disposed between the support members, wherein the auxiliary roller and the paper dispensing roller are disposed at the positioning frame, with the cover disposed on a front side of the paper dispensing roller and having an auxiliary roller for pressing against the paper dispensing roller, so as to deliver the paper.