ICE SHAVER STRUCTURE

Abstract

An ice shaver structure includes a worm shaft, an ice pressing tray installed at the bottom of the worm shaft for controlling ice block, a thread section formed on the worm shaft and engaged with a worm gear, a resisting mechanism installed on the worm gear and having a stopper fixed to an ice shaver and abutted against an axial surface of the worm gear, and a resilient device abutted against the stopper. The resilient device has a position-adjusting fixing element for determining an elastic force produced by the resilient device after being compressed, and the elastic force is acted on the stopper to push the stopper to press against the worm gear, such that the resilient device becomes a relative fixed end which is difficult to turn, so that the worm shaft can be driven by a motor to produced up-and-down displacements.

Description

FIELD OF THE INVENTION

The present invention relates to an ice shaver structure, in particular to the ice shaver having a worm gear with rotational resistance for driving a worm shaft to move up and down.

BACKGROUND OF THE INVENTION

With reference to FIGS. 1 and 3 for an ice shaver as disclosed in R.O.C. Utility Model No. 581239, the elements of this patented invention are labeled with the numerals originally used in the patent specification, and the ice shave comprises a casing 10 having a vertical worm shaft 11, and an ice pressing tray 14 coupled to the bottom of the worm shaft 11 for controlling ice block, and the worm shaft 11 is driven by a motor 20 to rotate. On the other hand, the casing 10 includes a recess with a transverse accommodating groove 15, a shaft rod 16 passing through the recess, and a worm gear 18 disposed at an end of the shaft rod 16, wherein the worm gear 18 is engaged with the worm shaft 11, and a spring S1 is sheathed on the shaft rod 16. In the two components screwed and coupled with each other, if one of the components is situated at a relatively fixed status, then the other one can be rotated to produce a displacement. In the aforementioned mechanism, the spring S1 is compressed to produce an elastic pushing force acted on the worm gear 18, so that the worm gear 18 presses against the worm shaft 11, and such resistance acted on the worm gear 18 makes the worm gear 18 to be unable to rotate. When the worm shaft 11 is driven by the motor 20 to rotate, vertical up and down displacements are produced by the worm gear 18 for controlling an ice block to be shaved by a blade to produced shaved ice.

However, the aforementioned mechanism uses the elastic force produced by the compression of the spring Si to press the worm gear 18 against the worm shaft 11 in order to form the resistance, so that the worm gear 18 is situated at a relatively fixed status, and thus the friction produced between the worm shaft 11 and the worm gear 18 may wear out or damage the whole mechanism after a long time of use.

In addition, the process of producing the shaved ice by the aforementioned principle rotates and descends the worm shaft 11 to control the ice block to be shaved by the blade in order to form shaved ice, and the dense level of the shaved ice depends on the remaining quantity of the ice block after the worm shaft 11 has rotated for one round which is directly related to the falling displacement after the worm shaft 11 has rotated for one round. In other words, the smaller the falling displacement after the worm shaft 11 has rotated for one round, the smaller quantity the ice block to be shaved by the blade, and the denser the shaved ice. However, in the aforementioned mechanism, the worm gear 18 is situated at a fixed status and cannot be rotated due to the resistance produced by the spring S1, so that the falling displacement after the worn shaft 11 has rotated for one round is constant and equal to a pitch. Therefore, the conventional ice shaver cannot adjust the falling displacement after the worm shaft 11 has rotated for one round, so that it cannot change the dense level of the shaved ice, and such ice shaver is lack of diversity.

Another ice shaver as disclosed in R.O.C. Utility Model No. M464631 comprises a transmission rod driven by a transmission motor to rotate an ice pressing dish, such that when an ice block is put on an ice shaving platform, the ice pressing dish presses the ice block and then rotates, and an ice shaver blade at the bottom of the ice block shaves the ice block to produce the shaved ice, which will fall down from the ice shaver. However the aforementioned ice shavers still have the following problems.

1. The ice pressing dish and the transmission rod of the ice shaver are fixed with each other by screwing, so that when it is necessary to remove the ice pressing dish from the transmission rod, the transmission rod must be remained fixed and not rotating, and the ice pressing dish is rotated until the ice pressing dish is separated from the bottom of the transmission rod. Obviously, such process cannot be completed quickly, and the installation and removal of the ice pressing dish onto/from the transmission rod becomes inconvenient.

2. In the prior art as disclosed in the Utility Model and shown in FIG. 3, a positioning pin is provided for pressing an ice block to position the ice block. In the prior art as disclosed in the Utility Model and shown in FIG. 7, a pressing block is used to replace the conventional positioning pin for pressing the ice block to position the ice block. However, the positioning pin or the pressing block comes with a sharp end, so that when the positioning pin or the pressing block is used to position the ice block, a certain thickness of the ice is remained at the final stage of shaving the ice block to prevent the positioning pin or the pressing block from being damaged by a direct contact with the ice shaving platform in the process of rotating the ice pressing dish, and thus causing unnecessary waste.

In view of the aforementioned problems of the prior art, it is a main subject for the present invention to provide an ice shaver structure to overcome the aforementioned problems.

SUMMARY OF THE INVENTION

Therefore, it is a primary objective of the present invention to provide an ice shaver structure comprising a worm shaft with a worm gear installed on a side of the worm shaft, a resistance mechanism installed on the worm gear for providing the resistance to resist the rotation of the worm gear, such that when the worm shaft is driven to rotate by the motor, the worm gear is ascended/descended, wherein the resistance is acted on the rotation of the worm gear installed of between the worm gear and the worm shaft, so as to prevent wearing out or damaging the worm gear and the worm shaft by friction.

Another objective of the present invention is to change the extent of rotating the worm gear according to the ascending/descending of the worm shaft by adjusting the resistance value provided by the resistance mechanism, so as to adjust the rising/falling displacement of the worm shaft in the same rotation speed, and further control the dense level of the shaved ice.

Another objective of the present invention is to provide a quick way of installing/removing the ice pressing tray to/from the bottom of the worm shaft to improve the convenience of use.

Another objective of the present invention is to provide an improved ice pressing tray with conical columns formed at an end of the ice pressing tray, so as to reduce the thickness of the ice remained at the final stage of shaving the ice block, and reduce the unnecessary waste of the usable ice block.

To achieve the aforementioned and other objectives, the present invention provides an ice shaver structure comprising an ice shaver structure, comprising a base, a pillar erected from the base, and a machine head disposed at the top of the pillar, and the machine head further comprising: a driving motor, having a driving gear installed thereon; a worm shaft, having an ice pressing tray installed at the bottom of the worm shaft for controlling an ice block, and the worm shaft having a driven gear engaged with the driving gear and provided for the driving motor to drive the work shaft to rotate by the driving gear and the driven gear; the worm shaft having a thread section and a worm gear engaged with the thread section, wherein a shaft rod is installed along the axis of the worm gear, and a resisting mechanism is installed on the shaft rod; and the resisting mechanism comprises a stopper fixed onto the machine head and abutting against an axial surface of the worm gear, and a resilient device pressing at the stopper and having a position adjustable fixing element installed at an end of the resilient device for determining an elastic force acting on the stopper after the resilient device is compressed, wherein the elastic force is acted onto the stopper to increase the friction between the stopper and the worm gear.

Wherein, the stopper has a through hole formed at an end of the stopper and sheathed on the shaft rod of the worm gear, and the other end of the stopper is secured to the machine head; and the resilient device includes a shaft sleeve and a compression spring, and the shaft sleeve having a shaft hole sheathed on the shaft rod of the worm gear, wherein the shaft rod has a key portion disposed thereon and the shaft hole of the shaft sleeve has a key groove, and the key groove of the shaft sleeve and the key portion of the shaft rod are embedded and linked with each other, and a flange is extended from an end of the shaft sleeve and abutted against the stopper; the compression spring is sheathed on the shaft sleeve and an end of the compression spring abuts against the flange, and the other end of the compression spring is screwed to an adjusting nut of the shaft rod, and the elastic force produced by compressing the compression spring pushes the flange, so that the shaft sleeve abuts the stopper and transmits the elastic force to the worm gear, and the adjusting nut may be turned to adjust the elastic force of the compression spring; a shaft sleeve with a shaft hole penetrating through the shaft sleeve is installed along the axis of the driven gear, and the shaft hole has a key groove, and the worm shaft has a key portion protruded from the worm shaft for embedding into the key groove, so that the driven gear and the worm shaft are combined integrally.

the worm shaft has a junction at the bottom of the worm shaft, and the ice pressing tray has a first side and a second side back to back to each other, and the first side has a shaft base, and the shaft base has an insert hole for receiving the junction and coaxially plugging the junction, and the shaft base has a plurality of pin slots formed along the radial direction of the insert hole, and the junction has a stop pin that can be inserted into the pin slot when the junction is plugged into the insert hole, and when the junction is plugged into the insert hole, a positioning element is provided for positioning the junction at the shaft base, such that the stop pin drives the ice pressing tray to rotate when the worm shaft rotates.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a perspective view of a transmission mechanism of the present invention;

FIG. 3 is an exploded view of a transmission mechanism of the present invention;

FIG. 4 is an exploded view including some components of the present invention;

FIG. 5 is a schematic view of a using status of the present invention;

FIG. 6 is a perspective view of a first side of an ice shaver structure combined with a worm shaft in accordance with a first preferred embodiment of the present invention;

FIG. 7 is a perspective view of a second side of an ice shaver structure having a column in accordance with the first preferred embodiment of the present invention;

FIG. 8 is a schematic view of an ice pressing tray in contact with a surface of an ice block in an ice bucket in accordance with the first preferred embodiment of the present invention;

FIG. 9 is a schematic view of an ice pressing tray merging into a surface of an ice block when a worm shaft is pressed downwardly in accordance with the first preferred embodiment of the present invention;

FIG. 10 is a perspective view showing the configuration of an ice pressing tray in accordance with a second preferred embodiment of the present invention;

FIG. 11 is a planar view showing the connection of an ice pressing tray in accordance with the second preferred embodiment of the present invention;

FIG. 12 is a schematic view of an ice pressing tray squeezing an ice cream in accordance with the second preferred embodiment of the present invention;

FIG. 13 is a schematic view of the partial assembly of an ice pressing tray in accordance with a third preferred embodiment of the present invention; and

FIG. 14 is a schematic view of a partial assembly of an ice pressing tray in accordance with a fourth preferred embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention will become clearer in light of the following detailed description of an illustrative embodiment of this invention described in connection with the drawings. It is intended that the embodiments and drawings disclosed herein are to be considered illustrative rather than restrictive.

With reference to FIG. 1 for an ice shaver structure of the present invention, the ice shaver structure comprises a base 10, a pillar 11 erected from the base 10, a machine head 12 disposed at the top of the pillar 11, and the machine head 12 further comprising a transmission mechanism as shown in FIGS. 2 to 4. The transmission mechanism further comprises a driving motor 2 having a driving gear 20 installed to the driving motor, a worm shaft 3 vertically installed next to the driving motor 2 and includes an ice pressing tray 6 installed at the bottom of the worm shaft 3 for controlling an ice block, and the worm shaft 3 has a driven gear 31 engaged with the driving gear 20, so that the driving motor 2 can drive the worm shaft 3 to rotate by means of the driving gear 20 and the driven gear 31. In this preferred embodiment, a shaft sleeve 32 is installed along the axis of the driven gear 31 and has a shaft hole 33 penetrating the shaft sleeve 32, and a key groove 331 is formed on a side of the shaft hole 33, and a key portion 34 is protruded from a side of the worm shaft 3. When the worm shaft 3 is passed through the shaft hole 33 of the driven gear 31, the key portion 34 is embedded into the key groove 331, so that the driven gear 31 and the worm shaft 3 are combined integrally, and the driven gear 31 drives the worm shaft 3 to rotate.

In addition, a thread section 35 is situated at an upper section of the worm shaft 3 and a worm gear 36 is engaged with the thread section 35, wherein a shaft rod 361 is installed along the axis of the worm gear 36, and an end of the shaft rod 361 is pivotally coupled to a support base 121 of the machine head 12, and the other end of the shaft rod 361 has a resisting mechanism 4 for providing the resistance to resist the rotation of the worm gear 36. The resisting mechanism 4 includes a stopper 40 and a resilient device 41, wherein an end of the stopper 40 is sheathed on the positioning pillar 122 of the support base 121, and the other end of the stopper 40 has a through hole 400 and sheathed on the shaft rod 361 of the worm gear 36 and abutted against the axial surface of the worm gear 36. The resilient device 41 may be compressed to produce an elastic restoring force to be acted onto the stopper 40, and the elastic force is acted onto the stopper 40, such that the stopper 40 pushes and presses the worm gear 36 to increase the friction between the two. Wherein, the resilient device may be a compression spring sheathed on the shaft rod of the worm gear, and the elastic force drives the stopper to press against the worm gear. In the structure of this preferred embodiment, the resilient device 41 includes a shaft sleeve 411 and a compression spring 410, and the shaft sleeve 411 has a shaft hole 412 sheathed on the shaft rod 361, wherein the shaft rod 361 has a key portion 362 and the shaft hole 412 of the shaft sleeve 411 has a key groove 413, and the key groove 413 of the shaft sleeve 411 and the key portion 362 of the shaft rod 361 may be embedded with each other, so that when the shaft rod 361 rotates, the shaft sleeve 411 is driven to rotate accordingly. Further, a flange 414 is extended from an end of the shaft sleeve 411 and abutted against the stopper 40. The compression spring 410 is sheathed on the shaft sleeve 411, and an end of the compression spring 410 presses against the flange 414, and the other end of the compression spring 410 presses an adjusting nut 42 screwed to the shaft rod 361. The resilient device 41 pushes the flange 414 of the shaft sleeve 411 by the elastic force produced by compressing the compression spring 410, so that the shaft sleeve 411 presses against the stopper 40 and transmits the elastic force to the worm gear 36. Therefore, the stopper 40 is pushed by the spring 410 to press against the worm gear 36, so as to increase the friction that must be overcome before the worm gear 36 can rotate. In other words, the worm gear 36 cannot rotate to define a fixed end with respect to the worm shaft 3. The worm shaft 3 can be moved up and down with respect to the worm gear 36 when the worm shaft 3 is rotated by the driving motor 2, the driving gear 20 and the driven gear 31, and the ice pressing tray 6 installed at the bottom of the worm shaft 3 controls the ice block to be shaved by the blade to produce shaved ice.

After a certain time of use, the stopper 40 may be worn out or damaged to decrease the thickness since the stopper 40 presses against the worm gear 36 to provide friction and resistance. The stopper 40 is pushed continuously by the elastic force of the compression spring 410, so that the stopper 40 can be moved along the positioning pillar 122 of the support base 121 to keep pressing at the worm gear 36 in order to maintain the friction and resistance between the stopper 40 and the worm gear 36.

Further, the present invention can change the dense level of the shaved ice. The factor of the ice shaver that affects the dense level of the shaved ice resides on the falling displacement produced after the worm shaft has rotated for one round. The smaller the falling displacement, the smaller quantity of ice shaved from the ice block or the denser the shaved ice. The present invention can change the dense level of the shaved ice by adjusting the adjusting nut 42 of the resilient device 41. With reference to FIG. 5 for the details, the adjusting nut 42 may be turned on the shaft rod 361 to adjust the position in order to adjust the level of compressing the compression spring 410 and change the elastic force provided by the compression spring 410. Therefore, the force of the stopper 40 pushing the worm gear 36 is changed to change the resistance that resists the rotation of the worm gear 36. If the adjusting nut 42 is adjusted to be further apart from the stopper 40, then the elastic force provided by the compression spring 410 will become smaller, and the force of the stopper 40 pressing the worm gear 36 will become smaller. Therefore, the worm gear 36 is situated at a status of moving and rotating together with the worm shaft 3, and an idle rotation is formed between the two. As the falling displacement of the worm shaft 3 per round decreases, the shaved ice will be thicker or denser.

The present invention provides a resilient device acted onto the worm gear to push the worm shaft and produce friction/resistance so as to provide a relatively fixed end and improve over the prior art by using the resilient device 41 acted onto the stopper 40 to push the worm gear 36 and produce resistance that resists the rotation of the worm gear 36 to form a relatively fixed end, so as to achieve the effect of rotating the worm shaft 3 to move up and down and prevent wearing out or damaging the whole ice shaver by the friction produced between the worm gear 36 and the worm shaft 3. On the other hand, the foregoing improved structure can further adjust the resistance provided by the resilient device 41 to the worm gear 36 to change the falling displacement of the worm shaft 3 and the dense level of the shaved ice, so as to provide more diversity of the ice shaving products.

With reference to FIGS. 6 and 7 for an ice pressing tray in accordance with the first preferred embodiment of the present invention, the ice pressing tray is made of plastic, and the ice pressing tray 6 has a first side 61 and a second side 62 disposed back to back to each other. The ice pressing tray 6 has a shaft base 63 disposed on the first side 61. The worm shaft 3 has a junction 37 disposed at the bottom of the worm shaft 3, and the shaft base 63 has an insert hole 631 for receiving and coaxially plugging the junction 37, and the shaft base 63 has a plurality of pin slots 632 formed in the radial direction of the insert hole 631. When the junction 37 is plugged into the insert hole 631, a positioning element is provided for positioning the junction 37 at the shaft base 63, and the junction 37 includes a stop pin 372 that is received in the pin slot 632 when the junction 37 is plugged into the insert hole 631. When the stop pin 372 is rotated at the worm shaft 3, the ice pressing tray 6 is driven to rotate. In this preferred embodiment, the positioning element is an elastic ring 371 sheathed on the junction 37 for interfering and positioning the shaft base 63 in the insert hole 631. In addition, the first side 61 of the ice pressing tray 6 of this preferred embodiment has a recess 611 disposed around the periphery of the shaft base 63 and provided for receiving any oil stain falling from the above.

The columns 64 are made of metal which is aluminum in this preferred embodiment, and the columns 64 are scattered on the second side 62, and each column 64 has a vertical column section 641 and a conical section 642, and the vertical column section 641 is combined into the ice pressing tray 6, and the conical section 642 is exposed form the second side.

Before the ice block is shaved, the insert hole 631 of the shaft base 63 of the ice pressing tray 6 is aligned precisely with the junction 37 disposed at the bottom of the worm shaft 3. After the stop pin 372 is aligned precisely with the pin slot 632, the junction 37 is received into the insert hole 631 of the shaft base 63, and the elastic ring interferes and positions the shaft base 63 in the insert hole 631 to complete the process of assembling the ice pressing tray 6 with the junction 37. On the other hand, if it is necessary to detach the ice pressing tray 6 from the junction 37, the ice pressing tray 6 is held by hand and pulled downwardly, wherein the downward pulling force is greater than the force of the elastic ring 371 for interfering and positioning the shaft base 63 in the insert hole 631, so as to complete the process of detaching the ice pressing tray 6 from the junction 37.

In the practical application of shaving the ice block as shown in FIGS. 8 and 9, the ice block A is put into the ice bucket 5. After the ice block A is aligned precisely with the ice pressing tray 6, the worm shaft 3 is descended to press the plurality of columns 64 on the second side 62 of the ice pressing tray 6 against a surface of the ice block A.

Since the column 64 is made of aluminum and the thermal conducting effect is very good, therefore the conical section 642 disposed at an end of the vertical column section 641 and in contact with the ice block A can melt a surface of the ice block A quickly when the worm shaft 3 is pressed downwardly, and the column 64 is received into the ice block A to achieve the combining effect. Now, the ice block A can be driven and rotated by the worm shaft 3, and the blade 51 installed at the bottom of the ice bucket 5 shaves the ice to produce shaved ice.

In view of the description above, the ice pressing tray of the present invention has the following advantages:

1. The junction 37 at the bottom of the worm shaft 3 and the shaft base 63 of the ice pressing tray 6 are positioned and fixed by the positioning element of the elastic ring 371, so that the junction 37 and the insert hole 631 can be aligned precisely and coupled easily. If it is necessary to remove the ice pressing tray 6 from the worm shaft 3, users simply need to hold the ice pressing tray 6 by hands and pull the ice pressing tray 6 downwardly. Compared with the conventional ice shaver, the ice pressing tray 6 of the invention can be installed onto or removed from the junction 37 more conveniently.

2. The ice pressing tray 6 has the columns 64 on the second side 62, so that the surface of the ice block A can be melted quickly, and the columns 64 can be put into the ice block A and combined with the ice block A. Compared with the conventional ice shaver, the present invention provides a larger quantity of shaved ice and reduces the unnecessary waste of ice blocks.

Of course, the ice pressing tray of the present invention may have many other embodiments with minor modification and changes. With reference to FIGS. 10 and 11 for an ice pressing tray in accordance with the second preferred embodiment of the present invention, the ice pressing tray is an ice cream squeezing device having a machine head and an ice pressing tray 7 of the first preferred embodiment, and the ice pressing tray 7 has a similar structure as the ice pressing tray 6 of the first preferred embodiment, and both embodiments have a first side 71 and a second side 72 disposed back to back with respect to each other, and the main difference of these two embodiments resides on that there is no column disposed on the second side 72 of the ice pressing tray 7, and a flat surface is provided instead. In addition, a pressing element 73 is used for isolating a wear resisting plate 74 and attaching onto the second side 72 of the ice pressing tray 7, and the ice pressing tray 7 and the pressing element 73 are coaxially coupled by a pivot 75 and pivoted with respect to each other.

When an ice cream is squeezed, the ice cream B is put into an ice bucket 5′. After the pressing element 73 is aligned precisely with the ice cream B in the ice bucket 5′ as shown in FIG. 12, the worm shaft 3 is descended so that the pressing element 73 adds pressure onto the ice cream B in the ice bucket 5′. Now, the ice cream B in the ice bucket 5′ will be squeezed out from a drain opening 52 formed at the bottom of the ice bucket 5′. A container is provided for receiving the ice cream B. Since the ice pressing tray 7 rotates with the worm shaft 3, therefore when the pressing element 73 is installed with the ice pressing tray 7, the pressing element 73 squeezes the ice cream B in the ice bucket 5′, the ice pressing tray 7 and the pressing element 73 are rotated with respect to each other by the pivot 75, and the ice pressing tray 7 is driven and rotated by the worm shaft 3, and the pressing element 73 in contact with the ice cream B remains still, and the wear resisting plate 74 installed between the ice pressing tray 7 and the pressing element 73 prevents wear-out or damage produced between the rotating ice pressing tray 7 and the still pressing element 73.

The aforementioned simple structures of the ice pressing tray 7 and the pressing element 73 are combined to form the ice cream squeezing device and achieve the effect of squeezing ice cream.

With reference to FIG. 13 for an ice pressing tray in accordance with the third preferred embodiment of the present invention, the main difference between this preferred embodiment and the first preferred embodiment resides on that the positioning element comprises an elastic element 373 and a propping element 374 installed in a through hole 375 of the junction 37, and the propping element 374 is propped by the elastic element 373 and protruded out from the junction 37, and the shaft base 63 has a recess 633 formed in the insert hole 631 and at a position corresponding to the propping element 374 for receiving and positioning the propping element 374, so that the elastic element 373 and the propping element 374 can achieve the same effect of the elastic ring 371 of the first preferred embodiment.

With reference to FIG. 14 for an ice pressing tray in accordance with the fourth preferred embodiment of the present invention, the main difference between this preferred embodiment and the first preferred embodiment resides on that the positioning element is a buckle ring 376, and the buckle ring 376 is sheathed on the junction 37, and the buckle ring 376 blocks and positions the shaft base 63 in the insert hole 631, and the buckle ring 376 achieves the same effect of the elastic ring 371 of the first preferred embodiment.

In summation of the description above, the present invention improves over the prior art, and is thus duly filed for patent application. While the invention 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 invention set forth in the claims.

Claims

1. An ice shaver structure, comprising a base, a pillar erected from the base, and a machine head disposed at the top of the pillar, and the machine head further comprising:

a driving motor, having a driving gear installed thereon;

a worm shaft, having an ice pressing tray installed at the bottom of the worm shaft for controlling an ice block, and the worm shaft having a driven gear engaged with the driving gear and provided for the driving motor to drive the work shaft to rotate by the driving gear and the driven gear; the worm shaft having a thread section and a worm gear engaged with the thread section, wherein a shaft rod is installed along the axis of the worm gear, and a resisting mechanism is installed on the shaft rod; and the resisting mechanism comprises a stopper fixed onto the machine head and abutting against an axial surface of the worm gear, and a resilient device pressing at the stopper and having a position adjustable fixing element installed at an end of the resilient device for determining an elastic force acting on the stopper after the resilient device is compressed, wherein the elastic force is acted onto the stopper to increase the friction between the stopper and the worm gear.

2. The ice shaver structure of claim 1, wherein the stopper has a through hole formed at an end of the stopper and sheathed on the shaft rod of the worm gear, and the other end of the stopper is secured to the machine head; and the resilient device includes a shaft sleeve and a compression spring, and the shaft sleeve having a shaft hole sheathed on the shaft rod of the worm gear, wherein the shaft rod has a key portion disposed thereon and the shaft hole of the shaft sleeve has a key groove, and the key groove of the shaft sleeve and the key portion of the shaft rod are embedded and linked with each other, and a flange is extended from an end of the shaft sleeve and abutted against the stopper; the compression spring is sheathed on the shaft sleeve and an end of the compression spring abuts against the flange, and the other end of the compression spring is screwed to an adjusting nut of the shaft rod, and the elastic force produced by compressing the compression spring pushes the flange, so that the shaft sleeve abuts the stopper and transmits the elastic force to the worm gear, and the adjusting nut may be turned to adjust the elastic force of the compression spring; a shaft sleeve with a shaft hole penetrating through the shaft sleeve is installed along the axis of the driven gear, and the shaft hole has a key groove, and the worm shaft has a key portion protruded from the worm shaft for embedding into the key groove, so that the driven gear and the worm shaft are combined integrally.

3. The ice shaver structure of claim 1, wherein the worm shaft has a junction at the bottom of the worm shaft, and the ice pressing tray has a first side and a second side back to back to each other, and the first side has a shaft base, and the shaft base has an insert hole for receiving the junction and coaxially plugging the junction, and the shaft base has a plurality of pin slots formed along the radial direction of the insert hole, and the junction has a stop pin that can be inserted into the pin slot when the junction is plugged into the insert hole, and when the junction is plugged into the insert hole, a positioning element is provided for positioning the junction at the shaft base, such that the stop pin drives the ice pressing tray to rotate when the worm shaft rotates.

4. The ice shaver structure of claim 3, wherein the columns are scattered on the second side, and the ice pressing tray is made of plastic, and each column is made of aluminum and has a vertical column section combined into the ice pressing tray and a conical section exposed from the second side.

5. The ice shaver structure of claim 4, further comprising a pressing element for separating a wear resisting plate and attaching on the second side of the ice pressing tray, and the ice pressing tray and the pressing element are coaxially and pivotally coupled with each other by a pivot and pivoted with respect to each other.