Abstract: A socket connector includes a substrate having an upper surface and a lower surface. The substrate has a ground plane between the upper surface and the lower surface. The substrate includes contact channels between the upper and lower surfaces. The socket connector includes socket contacts received in corresponding contact channels. Each socket contact includes a contact body, an upper mating element, and a lower mating element. The upper mating element is deflectable relative to the contact body and extends to the upper surface to interface with a first electrical component. The lower mating element is deflectable relative to the contact body and extends to the lower surface to interface with a second electrical component. A plurality of the socket contacts are electrically connected to the ground plane.

Abstract: Techniques and mechanisms for coupling packaged devices with a socket device. In an embodiment, the socket device comprises a socket body structure and conductors extending therethrough. A pitch of the conductors is in a range of between 0.1 millimeters (mm) and 3 mm. First and second metallization structures also extend, respectively, from opposite respective sides of the socket body structure. In the socket body structure, a conductive shield structure, electrically coupled to the first and second metallization structures, substantially extends around one of the conductors. For each of the first and second metallization structures, a vertical span of the metallization structure is in a range of between 0.05 mm and 2.0 mm, a portion of a side of the metallization structure forms a respective corrugation structure, and a horizontal span of the portion is at least 5% of the vertical span of the metallization structure.

Abstract: A contacting device for electrical contacting of a printed circuit board with a coil body for a solenoid valve for a brake device for a vehicle, including: a helical electrically conductive contact spring which is configured to be contacted or being contactable with the printed circuit board at a first spring end and configured to be contacted or being contactable with the coil body at a second spring end, situated opposite the first spring end, to enable a resilient electrical contacting of the printed circuit board with the coil body; and a pin which is receivable or has been received in an interior space of the contact spring, the pin being configured to support the contact spring from the interior space in a received state received in the interior space. Also described are a related solenoid valve, method, and computer readable storage medium.

Abstract: A system and apparatus for maintaining the desired synchronous and asynchronous A and B auxiliary electrical circuits, respectively, by use of connector block halves, one connector block half being connected to wiring out for auxiliary circuitry and being secured to the movable circuit breaker and the other auxiliary connector block half also being connecting to wiring out for auxiliary circuitry and secured to the relatively stationary wall or surface of the cubicle, where the connector block halves have some portion of its contacts of the “make before break” type so that the A and B auxiliary circuits operate as intended when the connector halves are connected and the A and B auxiliary circuits still reflect the proper condition, synchronous or asynchronous, of the A and B circuits, respectively, even when the auxiliary connector block halves are physically and/or electrically separated from one another.

Abstract: A cable assembly (100) having a first cable (20) having a first conductor (22), a second cable (40) having a second conductor (42) and an electrically conducting joining element (60). The joining element (60) has a first opening (61) and a second opening (63). The cable assembly (100) comprises a number of canted coil springs (70). A terminal portion of the first conductor (22) is secured to the first opening (61) by means of a first canted coil spring (70). A terminal portion of the second conductor (42) is secured to the second opening (63) by means of a second canted coiled spring (70).

Abstract: An electrical connection device is connected between a main body and a draw-out device of an electrical appliance having a draw-out structure. The electrical connection device includes: a draw-out device connection assembly being fixed on the draw-out device and electrically connected to inlet and outlet ends of the draw-out device; a main body connection assembly including contact pieces with a clamping mechanism, wherein the clamping mechanism makes the contact pieces close to and clamp main body busbars; and a flexible assembly connecting the draw-out device connection assembly and the main body connection assembly to form a conductive path. The contact pieces of the main body connection assembly are offset by adapting to the position deviation of the main body busbars. A linked electrical connection assembly is formed by the described electrical connection devices and an electrical appliance using the described electrical connection devices or the electrical connection assembly.

Abstract: A terminal is to be connected to a mating terminal having a flat surface portion. The terminal includes a conductive main body having an abutment surface, an annular terminal spring, the annular terminal spring being held on the abutment surface and a fastener holding the annular terminal spring on the abutment surface. The fastener includes a main body shaft being inserted into a central space of the annular terminal spring, a first end of the main body shaft being fixed to the conductive main body, and a plurality of arm portions extending outward in a radial direction of the fastener from a second end of the main body shaft, the second end being opposite to the first end, the plurality of arm portions being configured to hold the annular terminal spring at a contacting portion of the annular terminal spring, the contacting portion contacting the abutment surface.

Abstract: A rechargeable battery according to one aspect of the present invention includes: an electrode assembly including a first electrode, a second electrode, and a separator; a case for accommodating the electrode assembly; a first lower terminal protruding out of the case and electrically coupled to the first electrode; and a first fixing terminal installed to be movable with respect to the first lower terminal.

Abstract: The present invention provides a battery pack that has a plurality of single cells arranged in an array direction, and a bus bar that electrically connects the plurality of single cells. The bus bar has a first bent portion that is bent in a direction away from each of the single cells, and a second bent portion that is bent in a direction opposite to the direction in which the first bent portion is bent. The first bent portion and the second bent portion are disposed side by side in the array direction, and extend from one end of the bus bar to the other end of the same so as to intersect with the array direction. The first bent portion is configured to expand gradually from the one end of the bus bar to the other end of the same. The second bent portion is configured to narrow gradually from the one end of the bus bar to the other end of the same.

Abstract: An electrical connection shunt assembly is designed to be coupled electrically between two electrical contact terminal connectors. The assembly includes a set of electrical current conduction elements. The set of conduction elements comprising a first terminal and a second terminal designed to be coupled with a first and a second electrical contact terminal connectors, an electrical coupling element for the first and second terminals designed to allow electrical current flow from a first terminal to the second terminal. At least one of the conduction elements comprises a shunt conduit that is arranged through the conduction element so as to have a coolant flow therein.

Abstract: An electrical bus bar comprising: a first mounting portion configured to be connected to a first counter connector, a second mounting portion configured to be connected to a second counter connector and a flexible section between the first and second mounting portions, wherein the bus bar comprises a first flat part and a second flat part, wherein each flat part extends from the first mounting portion to the second mounting portion and is arranged in a stacked configuration, wherein the first flat part and the second flat part is made of a sheet metal, wherein a first strip of the sheet metal extends from a body edge of the first flat part to a body edge of the second flat part forming a first link, wherein the first link is dimensioned to keep a first contact surface of the first flat part and a second contact surface of the second flat part in intimate contact.

Abstract: A safety device (19) for a battery (12) being designed so that an electrical connector (18) can be connected to the positive (14) and negative (16) electrical terminals of the battery (12) in a first (A+, A?) or a second (B+, B?) connection position, the safety device (19) being adapted to be selectively positioned in a first or a second safety position so that only the desired connection positions are accessible to an electrical connector (18). A battery including the safety device or a set of such batteries and a method for making such a set of batteries safe.

Abstract: An electrical connector system includes mating pin and socket connectors each designed for improving the mechanical locking capabilities of the electrical connector system. A first connector includes a pin contact having a head portion with grooves formed thereon, and a second connector includes a cavity dimensioned for receiving the pin contact. A pair of channels are formed along an interior wall of the contact-receiving cavity, with a coiled spring seated within each of the channels. When the connectors are mated, one or both of the coiled springs engages one of the grooves of the head portion of the pin contact to latch the first and second connectors together in a locked configuration. The connector system may further include a removable collar that allows the pin to advance further into the contact-receiving cavity to urge the coiled springs into secondary grooves for facilitating decoupling of the connectors.

Abstract: A pressure contact type connector includes: an upper flat plate portion; a lower flat plate portion which is disposed below the upper flat plate portion; a first spring portion which connects the upper and lower flat plate portions; and a second spring portion which extends upward from the lower flat plate portion and applies a resilient force to the upper flat plate portion, in which the first and second spring portions are wound about the upper flat plate portion when viewed from above in a plan view, and extend so that the spring portions do not interfere with each other when being compressed and extended in the vertical direction, the first spring portion is formed to be bent so that a width dimension is larger than a thickness dimension, and the second spring portion is formed to be bent so that a width dimension is larger than a thickness dimension.

Abstract: A pressure contact type connector includes: an upper flat plate portion; a lower flat plate portion which is disposed below the upper flat plate portion; a first spring portion which connects the upper and lower flat plate portions; and a second spring portion which extends upward from the lower flat plate portion and applies a resilient force to the upper flat plate portion, in which the first and second spring portions are wound about the upper flat plate portion when viewed from above in a plan view, and extend so that the spring portions do not interfere with each other when being compressed and extended in the vertical direction, the first spring portion is formed to be bent so that a width dimension is larger than a thickness dimension, and the second spring portion is formed to be bent so that a width dimension is larger than a thickness dimension.

Abstract: A power supply device (1) includes a battery cell assembly (2) being an assembly of battery cells (3) each having electrodes (4) and a battery connecting block (10) including a case body (11) including an adjacent first and second divided fixing portions (12, 13) connected to each other via a flexural deformation portion (14). The flexural deformation portion (14) includes a first rising linear portion (40) having one end fixed to the first divided fixing portion, a second rising linear portion (40) having one end fixed to the second divided fixing portion, first and second curve portions (41) bent at the other ends of the first and second rising linear portions (40) in a direction to come close to each other, and a linear portion (42) connecting the first and second curve portions to each other.

Abstract: A pressure contact type connector includes: an upper flat plate portion; a lower flat plate portion which is disposed below the upper flat plate portion; a first spring portion which connects the upper and lower flat plate portions; and a second spring portion which extends upward from the lower flat plate portion and applies a resilient force to the upper flat plate portion, in which the first and second spring portions are wound about the upper flat plate portion when viewed from above in a plan view, and extend so that the spring portions do not interfere with each other when being compressed and extended in the vertical direction, the first spring portion is formed to be bent so that a width dimension is larger than a thickness dimension, and the second spring portion is formed to be bent so that a width dimension is larger than a thickness dimension.

Abstract: A pressure contact type connector includes: an upper flat plate portion; a lower flat plate portion which is disposed below the upper flat plate portion; a first spring portion which connects the upper and lower flat plate portions; and a second spring portion which extends upward from the lower flat plate portion and applies a resilient force to the upper flat plate portion, in which the first and second spring portions are wound about the upper flat plate portion when viewed from above in a plan view, and extend so that the spring portions do not interfere with each other when being compressed and extended in the vertical direction, the first spring portion is formed to be bent so that a width dimension is larger than a thickness dimension, and the second spring portion is formed to be bent so that a width dimension is larger than a thickness dimension.

Abstract: Provided is a gripper assembly for battery charging/discharging, which is electrically connected to a battery electrode to apply current during battery charging/discharging operation, the gripper assembly including a first electrode lead gripper including a first electrode gripper body disposed to correspond to a first electrode lead of the battery, and a first contact member coupled to one side of the first electrode gripper body and pressed to contact a surface of the first electrode lead and a second electrode lead gripper including a second electrode gripper body disposed to correspond to a second electrode lead of the battery, and a second contact member coupled to a side of the second electrode gripper body and attached to contact a surface of the second electrode lead.

Abstract: A bus bar assembly includes a deformable bus bar including a bus bar positive terminal flange, a bus bar negative terminal flange spaced-apart from the bus bar positive terminal flange and a flange connecting portion connecting the bus bar positive terminal flange and the bus bar negative terminal flange. A deformable bus bar frame includes a bus bar frame positive terminal flange carried by the bus bar positive terminal flange of the deformable bus bar and a bus bar frame negative terminal flange carried by the bus bar negative terminal flange of the deformable bus bar. A method of installing a deformable bus bar on positive and negative terminals of a battery cell is also disclosed.

Abstract: A solder-less wire connector sleeve of conductive material has a first bore portion extending from a first end and configured for rotatable connection to an end portion of an electrical rod or pin of a subsea connector or the like, and a second bore portion extending from the second end and configured for receiving a wire. The sleeve has a crimp portion overlying the wire receiving end portion. An annular, resilient, snap engaging member is mounted in the first bore portion to extend radially inwardly into the bore, and is configured for resilient, snap engagement in an annular groove in the conductor rod adjacent the tip of the rod to retain the rod in the sleeve while permitting relative rotation between the rod and sleeve.

Abstract: A canted coil spring includes a plurality of canted coils generally canted relative to a centerline extending through the coils. At least one coil when viewed in the direction of the centerline appears to have a non-elliptical shape and a non-circular shape when the at least one coil is in the unbiased state. The plurality of coils is generally canted at a first coil angle relative to the center line. The at least one coil includes at least one section canted at a second coil angle relative to the centerline. The second coil angle is different from the first coil angle when the at least one coil is in an unbiased state.

Abstract: A contact assembly is disclosed herein with a spring contact located in a housing wherein a plurality of coils of the spring contact are interconnected with one another and all slanted or canted. The coils further have outside diameters of different outside dimensions, such as one section of the spring contact having a larger outside diameter than the other section or sections of the spring contact. When inside the interior cavity of the housing, the first end and the second end are spaced from one another and wherein some of the plurality of coils do not contact the housing. A pin, rod, or shaft is locatable in a passage of the spring contact of the contact assembly but less than all of the coils of the spring contact grip against the exterior surface of the pin, rod or shaft.

Abstract: An implantable medical device includes a housing and a header mounted to the housing, the header including a header body having a bore with an electrical contact located within the bore, wherein the electrical contact includes a helical coil spring having an axial bore, wherein the axial bore of the helical coil spring is aligned with a longitudinal axis of the bore.

Abstract: A coaxial connector has a selectively engageable radio frequency interference shield.

Abstract: The present invention provides a spring contact for conducting electricity, Among two side edges for conducting electricity at a cross section of each ring of the spring contact, wherein one side edge for conducting electricity has two or more contacting points, while the other side edge for conducting electricity having at least one contacting point, or a contacting line. Because at each ring cross section of the spring contact, two or more than two contacting points are secured on any side edge for conducting electricity, aim of duplicated current passing capacity is obtained. The shape of each ring cross section is changed from annular shape to other shapes whose cross section area is smaller than that of the annular shape. Therefore, the spring contact of present invention which satisfying the requirements for miniaturizing, saves materials and reduces working space occupied during its installing.

Abstract: An electrical contact assembly made from a stamped housing, having a first end with a spring groove housing formed over a canted coil spring in order to provide spring retention to a pin or post inserted into the housing. On the other end of the stamped housing, a wire/cable crimp assembly is formed. The spring, groove housing may be formed having an opening for insertion of the pin or post that is either substantially parallel or perpendicular to the base of the housing.

Abstract: Spring-loaded contacts having an improved reliability. One example may provide spring-loaded contacts having a reduced likelihood of entanglement between a spring and a plunger. For example, a piston may be placed between a plunger and a spring. The piston may have a head portion that is wider than the diameter of the spring and located between the spring and the plunger to isolate the spring and the plunger. Another example may have a reduced likelihood of spring damage caused by excess current flow. For example, a plunger may have an eccentrically-tapered back. This eccentrically-tapered back may contact the head portion of the piston. The eccentricity may help to ensure that the plunger tilts at an angle such that the plunger or the piston, or both, contact a barrel of the spring-loaded contact, thereby avoiding current flow and resulting damage to the spring.

Abstract: An electrical terminal having at least one open end that is configured to receive a connector in an electrically conducting manner. The open end portion of the connector may be configured with differently sized and/or shaped portions to facilitate receipt of connector, such as to receive the connector in a manner that limits misalignment and/or receipt of bent or crooked connectors.

Abstract: The invention relates to a power jack (27) for a welding device (1), in particular an electrode and/or TIG welding device, wherein the power jack (27) made of conductive material comprises a bore (28) for receiving a plug element (29) attached to a hose packet, and an axial guide groove (33) is disposed in the bore (28), the guide groove being guided to the outside by way of a longitudinal groove (34) such that a locating pin (35) disposed on the plug element (29) can be inserted and rotated, wherein in the bore (28) a radial groove (36) is disposed and a retaining element (38) is positioned, preferably in the intersecting region of the groove (36) and the longitudinal groove (34), and a spring element (40) designed to transmit power is disposed in the groove (36), the spring element (40) protruding from the groove (36) and thereby reducing the diameter of the bore (28), wherein the retaining element (38) forms a contact surface (41) for the ends of the spring element (40) which is configured over only part o

Abstract: An electrical terminal operable to facilitate electrical connectivity between the terminal and an electrical connector. The electrical terminal may include a conducting element, such as but not limited to a coil spring, within a open end used to connect to an electrically conducting connector. The conducting element may facilitate electrical connectivity between the inserted connector and the terminal.

Abstract: A thermal expansion compensator is provided and includes a first electrode structure having a first surface, a second electrode structure having a second surface facing the first surface and an elastic element bonded to the first and second surfaces and including a conductive element by which the first and second electrode structures electrically and/or thermally communicate, the conductive element having a length that is not substantially longer than a distance between the first and second surfaces.

Abstract: A torsional electrical contact includes a body comprising a helix including N helical turns around a longitudinal axis, wherein N?1. The body further includes first and second opposite ends that are spaced longitudinally from each other. First and second contact arms extend outwardly away from the helix at the opposite first and second ends of the body, respectively. The first and second contact arms include respective distal ends defined by a part of the contact arm that is located a maximum orthogonal distance from the longitudinal axis. The first and second arms define a contact angle ? measured between a first reference plane in which the longitudinal axis lies and that intersects the distal end of the first contact arm and a second reference plane in which the longitudinal axis lies and that intersects the distal end of the second contact arm.

Abstract: A connector assembly is provided for connecting two planar surfaces or structures together to permit electrical transmission between the two. As described, the connector have at least two housing sections having grooves formed therein for receiving springs, such as canted coil springs. The springs are configured to provide constant mechanical and electrical connection between multiple parts and allow for small motions between such parts. By allowing for movement of the connected parts, adequate connection during thermal changes and/or vibrations is maintained. This is possible due to the spring contact interface between the connector assembly and the connecting parts, which allows relative movement between the springs and the connecting parts.

Abstract: An electrical terminal having at least one open end that is configured to receive a connector in an electrically conducting manner. The open end portion of the connector may be configured with differently sized and/or shaped portions to facilitate receipt of connector, such as to receive the connector in a manner that limits misalignment and/or receipt of bent or crooked connectors.

Abstract: An electrical terminal operable to facilitate electrical connectivity between the terminal and an electrical connector. The electrical terminal may include a cap to facilitate positioning a conducting element, such as but not limited to a coil spring, within a receptacle used to connect to an electrically conducting connector. The conducting element may facilitate electrical connectivity between the inserted connector and the terminal.

Abstract: An electrical contact assembly made from a stamped housing, having a first end with a spring groove housing formed over a canted coil spring in order to provide spring retention to a pin or post inserted into the housing. On the other end of the stamped housing, a wire/cable crimp assembly is formed. The spring, groove housing may be formed having an opening for insertion of the pin or post that is either substantially parallel or perpendicular to the base of the housing.

Abstract: A contact includes a first conductor that has a fitting hole formed therein; a second conductor that has a shaft that can be inserted into the fitting hole and an annular groove formed on an outer circumference of the shaft; and an inclined coil spring that has a ring inserted into a coil, is circularly formed by the ring to be provided inside the annular groove, and is in contact with the annular groove and the fitting hole to electrically connect the first and second conductors. The inclined coil spring is helically wound in a shape of an ellipse and is provided inside the annular groove so that a long axis of the ellipse is directed to an axial direction of the shaft and a short axis is directed to a radial direction of the shaft. Axial-direction both ends of the ring are in contact with a long-axis inner circumference of the inclined coil spring.

Abstract: Connectors are provided herein for connecting two elongated members that are positioned in-line to one another. Advantageously, the connectors not only allow for connection of the two members to permit for mechanical, electrical, EMI, and/or grounding applications, the connectors have provisions for accommodating thermal expansion and offset, which may include angular and/or axial offset. In certain embodiments, one or more collapsible housing pins or collars are provided to permit assembly and disassembly by either extending the housing pin or collapsing the housing pin.

Abstract: A contact includes a first conductor that has a fitting hole formed therein; a second conductor that has a shaft that can be inserted into the fitting hole and an annular groove formed on an outer circumference of the shaft; and an inclined coil spring that has a ring inserted into a coil, is circularly formed by the ring to be provided inside the annular groove, and is in contact with the annular groove and the fitting hole to electrically connect the first and second conductors. The inclined coil spring is helically wound in a shape of an ellipse and is provided inside the annular groove so that a long axis of the ellipse is directed to an axial direction of the shaft and a short axis is directed to a radial direction of the shaft. Axial-direction both ends of the ring are in contact with a long-axis inner circumference of the inclined coil spring.

Abstract: A connector assembly for electrically coupling solar shingles is provided. The solar shingles include photovoltaic sections that convert light into electricity and supporting sections having upper surfaces to which additional solar shingles are mounted. The connector assembly includes a contact and a protective cover. The contact electrically couples the photovoltaic sections of adjacent solar shingles by engaging conductive members disposed in recesses of the supporting sections of the solar shingles. The protective cover is disposed in the recesses of the solar shingles. The protective cover encloses the contact between the protective cover and the conductive members.

Abstract: Electrical connectors are generally discussed herein having a housing having a bore and a groove having a canted coil spring positioned therein. A pin is inserted through the bore and is electrically connected with the canted coil spring. The canted coil spring may be coated with a noble metal and the housing and the pin may be made from non-noble metals.

Abstract: A socketless integrated circuit (IC) contact connector is provided with an electrically conductive support post. An electrically conductive spring has a first end connected to the post, and a second end. An electrically conductive first wire has a first end connected to the spring second end, and a second end. An electrically conductive loop with a loop neck is connected to the first wire second end. Typically, the loop is formed in the first wire second end. The spring and loop work in cooperation to engage an IC contact.

Abstract: A contact spring having a free contact end for producing an electrical contact between the free contact end and a contact surface, the contact spring formed from N contact spring metal sheets and N?1 spacer elements. The contact spring metal sheets are fixed in a clamping region with a spacer element between two adjacent contact spring metal sheets, are at a distance from each other in a spring region around the thickness of the spacer elements, extend parallel to each other up to the free contact end in a freely elastic manner, and end in a common plane on the free contact end. In the spring region, the contact spring metal sheets have at least one bend with a pre-determined angle between the longitudinal axis of the contact spring metal sheets before the bend and the longitudinal axis of the contact spring metal sheets after the bend.

Abstract: A connector assembly is provided for connecting, two planar surfaces or structures together to permit electrical transmission between the two. As described, the connector have at least two housing sections having grooves formed therein for receiving springs, such as canted coil springs. The springs are configured to provide constant mechanical and electrical connection between multiple parts and allow for small motions between such parts. By allowing for movement of the connected parts, adequate connection during thermal changes and/or vibrations is maintained. This is possible due to the spring contact interface between the connector assembly and the connecting parts, which allows relative movement between the springs and the connecting parts.

Abstract: A conductive contact base, comprising a conductive component, an elastic component, and a contact surface is described in which the conductive component is clamped by the elastic component, the conductive component opens and closes freely within an elastic limit whereby accommodating plugs with different sizes, and the contact surface is disposed between the conductive component and the elastic component. The conductive contact base of the invention has the advantages of a large contact surface, strong clamping force, good impact resistance, good vibration resistance, and good deformation resistance.

Abstract: A power semiconductor module having a housing, a pressure member, a substrate including at least one contact surface, and at least one connection element leading towards the exterior of the housing. The connection element has a first contact device, a resilient section and a second contact device. The pressure member has two stop elements. The first contact device is electrically conductively connected to the contact surfaces of the substrate. The second contact device is arcuate in shape and has at least one deformation at the beginning and at the end of the arc, wherein, as a result of the deformations of the second contact device co-operating with the two stop elements of the pressure member, the connection element is prestressed.

Abstract: Connectors are provided herein for connecting two elongated members that are positioned in-line to one another. Advantageously, the connectors not only allow for connection of the two members to permit for mechanical, electrical, EMI, and/or grounding applications, the connectors have provisions for accommodating thermal expansion and offset, which may include angular and/or axial offset. In certain embodiments, one or more collapsible housing pins or collars are provided to permit assembly and disassembly by either extending the housing pin or collapsing the housing pin.

Abstract: A configurable electrical circuit element housing used as a building block in prototyping and demonstrating electric circuits. A label (10) with a circuit element graphic (11) attaches on an electrically insulated housing top (20). Underneath is an alternating arrangement of electrically insulated connector guide walls (22) and guide posts (21) forming a square-like perimeter surrounding a circuit element (40). Circuit element leads (41) attach to bent coil connector binding posts (31) inside the housing. The bent coil connector binding posts, on sides for which they are installed, are the ends of bent coil connectors (30). The bent coil connectors bend around the guide posts forming arcs external to the square-like perimeter. The guide walls help form the arcs by pinching the bent coil connectors. The arcs of the bent coil connectors are resilient connectors which interface with similar connectors forming a bent coil connector coupling (50) interweaving their coil loops.

Abstract: Administering device for infusing or injecting a product, comprising a housing (1, 2) with a receiver (3) for the product, a compartment (7) for a power source in order to supply the conveying mechanism (4) with electrical energy, a first contact spring (15) which is disposed in the compartment and places a terminal of the power source in an electrically conducting contact by means of a spring force when the power source is disposed in the compartment (7), and a second contact spring (16) for establishing an electrically conducting contact for an opposite terminal of the power source, likewise by means of spring force.