Paper taking device and multi-function printer

Abstract

The utility model relates to a paper taking device and a multi-function printer. The paper taking device comprises a top cover, and an arc-shaped rack is arranged on the top cover; a first paper feeding roller and a second paper feeding roller are arranged on the paper taking frame; the driving mechanism is in transmission connection with the first paper feeding roller and comprises a power assembly and a first planetary gear, and the power assembly is in transmission connection with the first planetary gear; the supporting seat is provided with a convex block and a limiting shaft, the first planetary gear is clamped on the limiting shaft, and a first elastic piece is clamped between the first planetary gear and the limiting shaft; a sliding groove is formed in the swing arm, the protruding block is movably connected into the sliding groove, a second elastic piece connected with the top cover is arranged at the other end of the swing arm, and the power assembly drives the first planetary gear to be meshed with or separated from the arc-shaped rack to drive the swing arm to move so that the paper taking frame can be switched between the paper taking position and the non-paper-taking position. According to the paper taking device, the first elastic piece provides necessary friction force for synchronous movement of the first planetary gear and the supporting base.

Description

Technical Field

[0001] This application relates to the field of paper dispensing technology, and more particularly to a paper dispensing device and a transaction machine. Background Technology

[0002] Printers are indispensable output tools in modern information products. As described in US Patent 8,205,873, most current paper feeding mechanisms are located on the paper feed holder and use interconnected gears, linkages, and other components to control the angle of the paper feed holder, thereby achieving the purpose of paper feeding. For example, when the paper feed holder rotates, the feed rollers contact the paper, and the rotation of the feed rollers feeds the paper one by one into the working area. When the printer is printing, the paper feed mechanism falls to contact the paper, while in standby mode, the paper feed mechanism rises to separate from the paper, facilitating paper loading or other operations.

[0003] In this gear-driven system, a planetary gear and a support base drive the paper feeder to change position. The planetary gear and support base move synchronously, causing the paper feeder to move and change its position. Once the paper feeder is in position, the friction between the planetary gear and the support base is less than the meshing force between the planetary gear and the transmission gear. At this point, the planetary gear overcomes the friction with the support base and rotates with the transmission gear, thereby driving the paper feed roller to feed the paper. The planetary gear and the support base are interference-fitted, which maintains both friction and the ability to overcome friction to achieve relative rotation. However, if the fit between the planetary gear and the support base is too tight, the planetary gear cannot overcome the friction and rotate normally. Conversely, if the fit is loose, the planetary gear will spin freely and cannot drive the support base to move, thus failing to move the paper feeder to lift or lower. Therefore, a new type of paper feeding device is urgently needed. Utility Model Content

[0004] This application provides a paper-taking device to solve the problem that it is difficult to properly align the first planetary gear and the support seat.

[0005] In a first aspect, this application provides a paper dispensing device, comprising:

[0006] Top cover, wherein an arc-shaped toothed rack is provided on the top cover;

[0007] A paper dispenser, which is provided with a first paper feed roller and a second paper feed roller, and has a paper dispensing position and a non-paper dispensing position;

[0008] A drive mechanism is provided, which is connected to the first paper feed roller. The drive mechanism includes a power component and a first planetary gear. The power component is connected to the first planetary gear. When the paper picker is in the paper picker position, the power component, the first planetary gear, and the second paper feed roller are connected in sequence.

[0009] A support base, wherein protrusions and limiting shafts are respectively provided on opposite sides of the support base; the first planetary gear is engaged with the limiting shaft and a first elastic element is clamped between the first planetary gear and the limiting shaft; and

[0010] A rocker arm is provided with a sliding groove, and a protrusion is movably connected in the sliding groove. A second elastic element is eccentrically provided at the other end of the rocker arm. The power component drives the first planetary gear to mesh or disengage with the arc-shaped rack to move the rocker arm, so that the paper picker switches between the paper pick position and the non-paper pick position.

[0011] According to the paper-taking device of this application, the support base is provided with a positioning groove, the first planetary gear is provided with an inner cavity and a cavity spaced apart from each other, the limiting shaft includes a buckle, the limiting shaft passes through the inner cavity and the buckle abuts against the end of the first planetary gear away from the support base, and the first elastic element is engaged in the positioning groove and the cavity.

[0012] Optionally, the cavity is open at one end facing the support and closed at the other end. The cavity is coaxial with the inner cavity and is arranged circumferentially around the inner cavity. The first elastic element is configured as a spring, and the two ends of the first elastic element abut against the support and the first planetary gear, respectively.

[0013] Optionally, the first planetary gear includes a first sidewall and a second sidewall spaced apart in a radial direction, the cavity is located between the first sidewall and the second sidewall, the second sidewall defines the inner cavity, the second sidewall extends out of the first planetary gear, and a portion of the spring is sleeved on the second sidewall.

[0014] Optionally, the limiting shaft includes a main shaft and an elastic arm, the main shaft and the elastic arm are spaced apart, the elastic arm is provided with the buckle, and the elastic arm can move relative to the main shaft under force.

[0015] According to the paper feeding device of this application, the power assembly includes a drive shaft and a first transmission gear, a first planetary gear meshing with the first transmission gear, a first paper feed roller having a first mounting hole, the drive shaft passing through the first mounting hole and having one end fixedly connected to the first transmission gear, a transmission component also being sleeved on the drive shaft, a third end of the transmission component being movably connected to the first transmission gear, a fourth end of the transmission component being engaged or disengaged from the first paper feed roller, and a third elastic element being sandwiched between the transmission component and the first transmission gear, the third elastic element being compressible along the axial direction of the drive shaft.

[0016] Optionally, the fourth end of the transmission component is provided with a first pawl and a frustum spaced radially apart, and one end of the first paper feed roller is provided with a second pawl and a buffer member spaced radially apart. The first pawl and the second pawl cooperate, and the frustum can abut against the buffer member.

[0017] Optionally, the third end of the transmission member is provided with two first engaging portions, which are arranged at intervals relative to each other along the circumferential direction of the transmission member. The two first engaging portions together define engaging grooves on both sides. The first transmission gear is provided with two second engaging portions, which are located in the engaging grooves. The width of the second engaging portion is smaller than the width of the engaging groove.

[0018] Optionally, the inner cavity of the transmission component is formed as a stepped hole, the stepped hole including a first hole segment and a second hole segment connected to each other, the inner diameter of the second hole segment being larger than the inner diameter of the first hole segment, the drive shaft passing through the first hole segment and the second hole segment, and a portion of the third elastic element being engaged in the drive shaft and the second hole segment.

[0019] Secondly, this application provides a transaction machine, including the aforementioned paper dispensing device.

[0020] The technical solutions provided in this application have the following advantages compared with the prior art:

[0021] The paper-feeding device provided in this application embodiment has a first paper feed roller installed on the paper feed holder. The driving mechanism includes a power component and a first planetary gear. The power component is driven by the first planetary gear and also by the first paper feed roller, thereby providing power for the rotation of the first paper feed roller and the first planetary gear. Since the first planetary gear is engaged on the limiting shaft and a first elastic element is sandwiched between the first planetary gear and the limiting shaft, the first elastic element can apply a certain pressure between the first planetary gear and the support seat, so that the first planetary gear presses against the support seat. When the first planetary gear and the support seat have a relative motion tendency, the friction between them can be used to make them move synchronously. When the paper feed holder is in the non-paper-feeding position and is preparing to switch to the paper-feeding position, the first planetary gear meshes with the arc-shaped rack. Under the drive of the power component, the first planetary gear moves along the arc-shaped rack. During the movement of the first planetary gear, The protrusion moves within the sliding groove until the first planetary gear disengages from the arc-shaped rack. The continued movement of the protrusion causes the sliding groove to move synchronously, which in turn moves the rocker arm. The rocker arm has a second elastic element eccentrically mounted at its other end, connected to the top cover. The elasticity of the second elastic element allows the rocker arm to move, thus adjusting the position of the paper feeder from a non-paper-feeding position to a paper-feeding position. At this time, the power assembly, the first planetary gear, and the second paper feed roller are sequentially connected. During the movement of the paper feeder between the paper-feeding and non-paper-feeding positions, the power assembly and the first paper feed roller remain connected. The power assembly drives the first planetary gear to rotate. Since the support base has rotated to its position and is fixed there, the first planetary gear overcomes the friction with the support base and rotates around the limiting shaft. The rotation of the first planetary gear drives the second paper feed roller to rotate, thus picking up the paper.

[0022] When the paper dispenser needs to be adjusted to move from the paper-dispensing position to the non-paper-dispensing position, the first transmission gear rotates in the opposite direction. At this time, the power component drives the first planetary gear to rotate in the opposite direction, and the support base moves with the first planetary gear (during this process, the protrusion and the sliding groove move relative to each other) until the first planetary gear re-engages with the arc-shaped rack. At this time, the continued movement of the first planetary gear will drive the rocker arm to move, thereby changing the position of the paper dispenser and moving it from the paper-dispensing position to the non-paper-dispensing position. The eccentric setting of the second elastic element allows the rocker arm to adjust its angle more flexibly during movement, which helps the paper dispenser switch between the paper-dispensing position and the non-paper-dispensing position. At the same time, the eccentric setting of the second elastic element can provide a natural return force after the rocker arm finishes moving, so that the paper dispenser can return to the non-paper-dispensing position more accurately.

[0023] In summary, the first elastic element can provide suitable frictional force, i.e., relative rotational resistance, between the first planetary gear and the support seat. This avoids the influence of machining errors between the first planetary gear and the support seat on the rotational resistance, ensuring that they have suitable frictional force when they need to rotate synchronously, and also ensuring that they can overcome frictional force when they need to rotate relative to each other. This reduces the machining accuracy and difficulty of the first planetary gear and the support seat, thereby extending the service life of the paper feeding device. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0027] Figure 1 A perspective view of a paper-taking device provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 A cross-sectional view of a paper-taking device provided in an embodiment of this application;

[0030] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0031] Figure 5 An assembly drawing of a support base and a first planetary gear for a paper-feeding device provided in an embodiment of this application;

[0032] Figure 6 A front view of a support base and a first planetary gear for a paper-feeding device provided in an embodiment of this application;

[0033] Figure 7 for Figure 6 Cross-sectional view at point C;

[0034] Figure 8A perspective view of the first planetary gear of a paper-feeding device provided in an embodiment of this application;

[0035] Figure 9 A perspective view of a support base for a paper-feeding device provided in an embodiment of this application;

[0036] Figure 10 A perspective view of a rocker arm of a paper-feeding device provided in an embodiment of this application;

[0037] Figure 11 A perspective view of a transmission component of a paper-feeding device provided in an embodiment of this application;

[0038] Figure 12 A side view of the first paper feed roller of a paper feeding device provided in an embodiment of this application;

[0039] Figure 13 A perspective view of the first paper feed roller of a paper feeding device provided in an embodiment of this application;

[0040] Figure 14 An exploded view of a paper-taking device provided in an embodiment of this application;

[0041] Figure 15 Another exploded view of a paper-taking device provided in an embodiment of this application;

[0042] Figure 16 Another exploded view of a paper dispensing device provided in the embodiments of this application;

[0043] Figure 17 A perspective view of a rocker arm of a paper-feeding device provided in an embodiment of this application;

[0044] Figure 18 A perspective view of a support base for a paper-feeding device provided in an embodiment of this application from another angle;

[0045] Figure 19 A perspective view of a transmission component of a paper-taking device provided in an embodiment of this application;

[0046] Figure 20 This is a perspective view of the top cover of a paper dispensing device provided in an embodiment of this application.

[0047] Explanation of reference numerals in the attached figures:

[0048] Paper feeder 10, first paper feed roller 11, second pawl 111, first mounting hole 112, guide post 113, second paper feed roller 12, drive mechanism 20, power assembly 21, first planetary gear 22, inner cavity 221, first side wall 222, second side wall 223, cavity 224, first transmission gear 23, second engaging part 231, first rotating shaft 232, drive shaft 24, transmission component 25, third end 2501, fourth end 2502, first pawl 251, first engaging part 252, stepped hole 253, first hole section 2531, second hole section 2532, frustum 254, third elastic element 26, gear set 27, support base 30, protrusion 31, limiting shaft 32, buckle 321, main shaft 322, elastic arm 323, positioning groove 33, second assembly hole 34, first elastic element 40, rocker arm 50, sliding groove 51, first end 511, second end 512, third assembly hole 52, second elastic element 60, buffer element 70, top cover 80, arc-shaped rack 81. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0051] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0052] like Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 10 as well as Figure 18 As shown, the paper-taking device according to an embodiment of this application includes a top cover 80 (e.g., Figure 20 (as shown), paper holder 10, drive mechanism 20, support base 30 and rocker arm 50.

[0053] Specifically, the top cover 80 is provided with an arc-shaped rack 81, and the paper feeder 10 is provided with a first paper feed roller 11 and a second paper feed roller 12. The paper feeder 10 has a paper-feeding position and a non-paper-feeding position. The drive mechanism 20 is drivenly connected to the first paper feed roller 11. The drive mechanism 20 includes a power component 21 and a first planetary gear 22. The power component 21 is drivenly connected to the first planetary gear 22. When the paper feeder 10 is in the paper-feeding position, the power component 21, the first planetary gear 22, and the second paper feed roller 12 are drivenly connected. The transmission is sequentially connected; the support base 30 has a protrusion 31 and a limiting shaft 32 on opposite sides, the first planetary gear 22 is engaged on the limiting shaft 32 and a first elastic element 40 is sandwiched between the first planetary gear 22 and the limiting shaft 32; the rocker arm 50 is provided with a sliding groove 51, the protrusion 31 is movably connected in the sliding groove 51, and the other end of the rocker arm 50 is eccentrically provided with a second elastic element 60, the second elastic element 60 is fixedly connected to the top cover 80, wherein the power component 21 drives the first planetary gear 22 and the arc-shaped rack 81 ( Figure 20 The position of the arc-shaped rack 81 is shown in the figure. Engaging or disengaging the rack 81 drives the rocker arm 50 to move, so that the paper picker 10 switches between the paper pick position and the non-paper pick position.

[0054] In detail, the paper feeder 10 is fixed to the top cover 80, and the top cover 80 is provided with an arc-shaped rack 81. The paper feeder 10 is equipped with a first paper feed roller 11 and a second paper feed roller 12, which are used for paper feeding. The drive mechanism 20 includes a power component 21 and a first planetary gear 22. The power component 21 is drivenly connected to the first planetary gear 22 and also to the first paper feed roller 11, thereby providing power for the rotation of the first paper feed roller 11 and the first planetary gear 22. Since the first planetary gear 22 is engaged on the limiting shaft 32 and a first elastic element is sandwiched between it and the limiting shaft 32, the drive mechanism 20 is equipped with a first planetary gear 22. 40. The first elastic element 40 can apply a certain pressure between the first planetary gear 22 and the support seat 30, so that the first planetary gear 22 presses against the support seat 30. When the first planetary gear 22 and the support seat 30 have a relative tendency to move, the friction between them can be used to make them move synchronously. When the paper holder 10 is in the non-paper-picking position and is preparing to switch to the paper-picking position, the first planetary gear 22 meshes with the arc-shaped rack 81. Driven by the power component 21, the first planetary gear 22 moves along the arc-shaped rack 81. During the movement of the first planetary gear 22, it will drive the protrusion 31 to move in the sliding groove 51. The first planetary gear 22 continues to move until it disengages from the arc-shaped rack 81. This movement drives the protrusion 31 to move, and in turn, causes the sliding groove 51 to move synchronously with the protrusion 31, thereby moving the rocker arm 50. The rocker arm 50 has a second elastic element 60 eccentrically mounted at its other end. This second elastic element 60 is fixedly connected to the top cover 80. The elasticity of the second elastic element 60 allows the rocker arm 50 to move, thus adjusting the position of the paper dispenser 10 from a non-paper-dispensing position to a paper-dispensing position. At this point, the first planetary gear 22 changes its relative position to the paper dispenser 10 and disengages from the arc-shaped rack 81. The power assembly 21, the first planetary gear 22, and the second paper feed roller 12 are sequentially connected in a transmission manner. During the movement of the paper feeder 10 between the paper feed position and the non-paper feed position, the power assembly 21 and the first paper feed roller 11 are always connected in a transmission manner. The power assembly 21 drives the first planetary gear 22 to rotate. At this time, since the support seat 30 has rotated into place and is limited and fixed in this position by the sliding groove 51, the first planetary gear 22 overcomes the frictional force between itself and the support seat 30 and rotates with the central axis of the limiting shaft 32 as the rotation center. The rotation of the first planetary gear 22 drives the gear set 27 and transmits it to the second paper feed roller 12, thereby driving the paper feed.

[0055] When adjustment is needed to move the paper dispenser 10 from the paper-dispensing position to the non-paper-dispensing position, the first transmission gear 23 rotates in the opposite direction. At this time, the power component 21 drives the first planetary gear 22 to rotate in the opposite direction, and the support base 30 moves with the first planetary gear 22 (during this process, the protrusion 31 and the sliding groove 51 move relative to each other) until the first planetary gear 22 re-engages with the arc-shaped rack 81. At this time, the continued movement of the first planetary gear 22 will drive the rocker arm 50 to move, thereby changing the position of the paper dispenser 10 and moving it from the paper-dispensing position to the non-paper-dispensing position. The eccentric setting of the second elastic element 60 allows the rocker arm 50 to adjust its angle more flexibly during movement, which helps the paper dispenser 10 switch between the paper-dispensing position and the non-paper-dispensing position. At the same time, the eccentric setting of the second elastic element 60 can provide a natural return force after the rocker arm 50 finishes moving, so that the paper dispenser 10 can return to the non-paper-dispensing position more accurately.

[0056] During the movement of the paper feeder 10 between the non-paper feed position and the paper feed position, the support base 30 and the first planetary gear 22 need to move synchronously. This allows the first planetary gear 22 to transition from a state where it cannot transmit power to the second paper feed roller 12 to a state where it can transmit power to the second paper feed roller 12. This enables the power assembly 21 to provide power for the rotation of the second paper feed roller 12. The synchronous movement between the first planetary gear 22 and the support base 30 requires the resistance provided by the first elastic element 40 to their mutual rotation. After the support base 30 is in position and the first planetary gear 22 is connected to the second paper feed roller 12, the first planetary gear 22 needs to rotate around the central axis of the limiting shaft 32. At this time, relative rotation occurs between the support base 30 and the first planetary gear 22. The driving force of the power assembly 21 on the first planetary gear 22 overcomes the frictional force provided by the first elastic element 40. The first elastic element 40 includes, but is not limited to, a coil spring and a rubber spring.

[0057] For example, the fit between the protrusion 31 and the sliding groove 51 can have high dimensional accuracy to ensure that the two can fit tightly and move smoothly.

[0058] In some specific embodiments, the paper feeding device further includes a gear set 27. The output end of the gear set 27 is connected to the second paper feed roller 12. The input end of the gear set 27 can be connected to or disconnected from the first planetary gear 22. That is, when the paper feeder 10 moves to the paper feeding position, the first planetary gear 22 is connected to the input end of the gear set 27. When the paper feeder 10 moves to the non-paper feeding position, the second planetary gear 22 is disconnected from the input end of the gear set 27.

[0059] In some specific embodiments, the sliding groove 51 includes a first end 511 and a second end 512. The protrusion 31 is movable between the first end 511 and the second end 512. When the paper holder 10 is in a non-paper-taking position, the first planetary gear 22 moves along the arc-shaped rack 81, driving the protrusion 31 from the first end 511 of the sliding groove 51 to the second end 512. The first planetary gear 22 continues to move and will disengage from the arc-shaped rack 81 and drive the rocker arm 50 to move through the protrusion 31, thereby moving the paper holder 10 to the paper-taking position. When the paper holder 10 is in the paper-taking position and needs to be moved to a non-paper-taking position, the first planetary gear 22 rotates in the opposite direction, driving the protrusion 31 from the second end 512 of the sliding groove 51 to the first end 511, thereby re-meshing with the arc-shaped rack 81.

[0060] like Figure 5 , Figure 9 , Figure 16 and Figure 17 As shown, in a specific embodiment, a first rotating shaft 232 is provided on the side of the first transmission gear 23 near the support base 30. The extension axis of the first rotating shaft 232 is perpendicular to the teeth of the first transmission gear 23. The support base 30 is provided with a second mounting hole 34, and the rocker arm 50 is provided with a third mounting hole 52. The second mounting hole 34 and the third mounting hole 52 are coaxial. The first rotating shaft 232 passes through the second mounting hole 34 and the third mounting hole 52. The support base 30 rotates about the extension axis of the first rotating shaft 232 as the rotation axis.

[0061] For example, the first rotating shaft 232 and the first transmission gear 23 can be integrally formed.

[0062] According to the paper feeding device of the present application embodiment, the first elastic member 40 can provide a suitable frictional force, i.e., relative rotational resistance, between the first planetary gear 22 and the support seat 30, which can avoid the influence of the machining error between the first planetary gear 22 and the support seat 30 on the rotational resistance, reduce the machining accuracy and difficulty of the first planetary gear 22 and the support seat 30, and thus extend the service life of the paper feeding device.

[0063] like Figures 6 to 9 As shown, in the paper-taking device according to the embodiment of this application, the support base 30 is provided with a positioning groove 33, the first planetary gear 22 is provided with an inner cavity 221 and a cavity 224 spaced apart from each other, the limiting shaft 32 includes a buckle 321, the limiting shaft 32 passes through the inner cavity 221 and the buckle 321 abuts against the end of the first planetary gear 22 away from the support base 30, and the first elastic member 40 is engaged in the positioning groove 33 and the cavity 224.

[0064] In detail, the support base 30 is provided with a positioning groove 33, which provides an installation reference and limiting function for the installation of the first elastic member 40. One end of the first elastic member 40 is engaged in the inner wall of the cavity 224, and the other end is engaged in the positioning groove 33, thereby providing resistance to the relative rotation of the support base 30 and the first planetary gear 22. The limiting shaft 32 passes through the inner cavity 221 to position the first planetary gear 22. At the same time, the buckle 321 presses against the end of the first planetary gear 22 away from the support base 30, thereby providing a certain clamping force for the first elastic member 40, thus ensuring that there is relative movement resistance between the support base 30 and the first planetary gear 22. The cavity 224 provides positioning and guiding function for the installation of the first elastic member 40.

[0065] During assembly, the buckle 321 needs to be elastic or deformable relative to the limiting shaft 32, so that the buckle 321 can pass out of the inner cavity 221 and abut against the first planetary gear 22.

[0066] like Figures 6 to 8 As shown, in some embodiments, the cavity 224 is open at one end facing the support 30 and closed at the other end. The cavity 224 is coaxial with the inner cavity 221 and is arranged circumferentially around the inner cavity 221. The first elastic member 40 is configured as a spring, and the two ends of the first elastic member 40 abut against the support 30 and the first planetary gear 22, respectively.

[0067] In detail, the cavity 224 is open at one end facing the support 30 and closed at the other end, which can accommodate the first elastic element 40. One end of the first elastic element 40 can be stopped by the closed cavity 224, while the other end of the first elastic element 40 can extend out of the opening and be stopped by the support 30. The cavity 224 and the inner cavity 221 are coaxially arranged, which can make the force on the first planetary gear 22 more uniform, thereby improving the overall stability. The spring has the characteristics of being flexible and elastic, and can produce corresponding deformation when subjected to external force. Moreover, the spring does not require lubrication, reducing maintenance costs and operational complexity.

[0068] like Figures 6 to 8 As shown, in some embodiments, the first planetary gear 22 includes a first sidewall 222 and a second sidewall 223 spaced apart in the radial direction, a cavity 224 is located between the first sidewall 222 and the second sidewall 223, the second sidewall 223 defines an inner cavity 221, the second sidewall 223 extends out of the first planetary gear 22, and a portion of the spring is sleeved on the second sidewall 223.

[0069] In detail, the second sidewall 223 provides a clear boundary and support for the assembly of the limiting shaft 32, ensuring that the limiting shaft 32 maintains a stable position with the first planetary gear 22 during movement. This guarantees that the limiting shaft 32 is always in the correct position, reducing the occurrence of errors. The spring is sleeved on the second sidewall 223, thus utilizing both the second sidewall 223 and the first sidewall 222 to simultaneously support and position the spring, preventing displacement or deformation under force and ensuring its normal elastic performance.

[0070] Since there needs to be a relative rotation process between the first planetary gear 22 and the support seat 30, the first planetary gear 22 needs to be spaced apart from the support seat 30 to prevent greater frictional resistance from affecting the relative rotation. The second side wall 223 extending out of the first planetary gear 22 can ensure that the spring can still be supported and positioned by the second side wall 223 during the process of contacting the support seat 30, thus avoiding jamming.

[0071] When installing the spring, the second sidewall 223 can provide a fixed mounting base, making the spring installation simpler and faster. Without the need for additional complex fixing devices and auxiliary tools, the first elastic element 40 can be firmly installed in the designated position. Furthermore, during maintenance, if the first elastic element 40 is damaged or needs to be replaced, the presence of the first sidewall 222 and the second sidewall 223 also facilitates the disassembly and reinstallation of a new spring, improving the convenience of maintenance.

[0072] like Figures 5 to 7 As shown, in some embodiments, the limiting shaft 32 includes a main shaft 322 and an elastic arm 323, with the main shaft 322 and the elastic arm 323 spaced apart. The elastic arm 323 is provided with a buckle 321, and the elastic arm 323 can move relative to the main shaft 322 when subjected to force.

[0073] In detail, the main shaft 322 and the elastic arm 323 are spaced apart. The elastic arm 323 can move relative to the main shaft 322 under force. When the limiting shaft 32 is inserted into the inner cavity 221 and assembled with the first planetary gear 22, the buckle 321 is subjected to the squeezing force of the second side wall 223, which in turn causes the elastic arm 323 to be subjected to force, so that the elastic arm 323 moves toward the direction closer to the main shaft 322, thereby facilitating the buckle 321 to pass out of the inner cavity 221. After the buckle 321 passes out of the inner cavity 221, the force of the second side wall 223 on the buckle 321 disappears, the elastic arm 323 is released and reset, thereby driving the buckle 321 to reset relative to the main shaft 322, so that the buckle 321 stops against the first planetary gear 22.

[0074] like Figure 2 , Figure 3 , Figure 4 , Figure 11 , Figure 13 ,Figure 14 as well as Figure 15 As shown, in the paper feeding device according to an embodiment of this application, the power assembly 21 includes a drive shaft 24 and a first transmission gear 23. A first planetary gear 22 meshes with the first transmission gear 23. The first paper feed roller 11 is provided with a first mounting hole 112. The drive shaft 24 passes through the first mounting hole 112 and one end is fixedly connected to the first transmission gear 23. A transmission member 25 is also sleeved on the drive shaft 24. The third end 2501 of the transmission member 25 is movably connected to the first transmission gear 23. The fourth end 2502 of the transmission member 25 is engaged or disengaged from the first paper feed roller 11. When the transmission member 25 is engaged with the first paper feed roller 11, it can drive the first paper feed roller 11 to rotate. A third elastic member 26 is sandwiched between the transmission member 25 and the first transmission gear 23. The third elastic member 26 is compressible along the axial direction of the drive shaft 24.

[0075] In detail, the power assembly 21 also includes a power unit, which is connected to the drive shaft 24 to drive the drive shaft 24 to rotate. The drive shaft 24 passes through the first mounting hole 112 and one end is fixedly connected to the first transmission gear 23. Thus, when the drive shaft 24 is driven by the power unit, it can drive the first transmission gear 23 to rotate. The first planetary gear 22 is always meshed with the first transmission gear 23, thereby driving the first planetary gear 22 to rotate by driving the first transmission gear 23 to rotate. The third end 2501 of the transmission member 25 is movable to the first transmission gear 23. The transmission member 25 is connected to the first transmission gear 23, and the distance between them can change in the axial direction of the drive shaft 24, but they always maintain a mutual transmission relationship. The fourth end 2502 of the transmission member 25 can engage or disengage with the first feed roller 11. Thus, when the distance between the transmission member 25 and the first feed roller 11 changes in the axial direction of the drive shaft 24, it can engage or disengage with the first feed roller 11. The third elastic member 26 is used to reset the transmission member 25 and re-engage with the first feed roller 11 when the transmission member 25 is disengaged. That is, when the third elastic member 26 is subjected to the force applied by the first feed roller 11 in the axial direction of the drive shaft 24, it is compressed, causing the distance between the transmission member 25 and the first feed roller 11 to change and eventually disengage. Until the third elastic member 26 resets when the force disappears, it drives the transmission member 25 to approach the first feed roller 11 again in the axial direction, thereby re-engaging with the first feed roller 11. The following describes in detail how the first feed roller 11 applies force to the third elastic member 26. It should be noted that the first feed roller 11 can apply force to the third elastic member 26 directly or intermittently.

[0076] When the paper feeding device is applied in a paper machine, the paper machine is equipped with a scanning wheel to drive the paper to scan the paper. The first transmission gear 23 rotates and drives the transmission component 25 to rotate synchronously. Under the action of the third elastic component 26, the transmission component 25 engages with the first paper feed roller 11, thereby driving the first paper feed roller 11 to rotate. At the same time, the first transmission gear 23 drives the first planetary gear 22, the gear set 27, and finally drives the second paper feed roller 12 to rotate. Thus, the first paper feed roller 11 and the second paper feed roller 12 work together to complete the active paper feeding.

[0077] During the scanning and paper-fetching state, since the tangential speed of the scanning wheel is faster than that of the first feed roller 11 and the second feed roller 12, when the paper enters the scanning wheel and moves with the tangential speed of the scanning wheel, the friction between the first feed roller 11 and the paper causes the first feed roller 11 to disengage from the transmission component 25 as the paper rotates rapidly. The third elastic element 26 is compressed, and the power transmission between the first feed roller 11 and the first transmission gear 23 is disengaged, making it unable to actively pick up the next sheet of paper until the paper completely leaves the first feed roller 11. At this time, when the third elastic element 26 loses its force, the transmission component 25 can re-engage with the first feed roller 11 under the restoring force of the third elastic element 26.

[0078] In summary, at low temperatures, the first feed roller 11 or the second feed roller 12 will generate a large amount of static electricity. The third elastic element 26 can effectively prevent the transmission element 25 from being unable to engage with the first feed roller 11 due to static electricity adsorption to the drive shaft 24. As long as the first feed roller 11 separates from the paper, the third elastic element 26 will reset and drive the transmission element 25 to move along the axial direction of the drive shaft 24, thereby re-engaging with the first feed roller 11.

[0079] In the above embodiments, the transmission component 25 and the first paper feed roller 11 can be a friction clutch type engagement structure, a cam type structure, or a ratchet type structure, etc.

[0080] like Figure 4 , Figure 11 , Figure 12 as well as Figure 19 As shown, in some embodiments, the fourth end 2502 of the transmission member 25 is provided with a first pawl 251 and a frustum 254 spaced apart in the radial direction, and one end of the first paper feed roller 11 is provided with a second pawl 111 and a buffer member 70 spaced apart in the radial direction. The first pawl 251 and the second pawl 111 cooperate, and the end face of the frustum 254 can abut against the buffer member 70.

[0081] In detail, a first pawl 251 is provided at the fourth end 2502 of the transmission component 25, and a second pawl 111 is provided at one end of the first paper feed roller 11. The first pawl 251 and the second pawl 111 cooperate with each other. Since each of the first pawl 251 and the second pawl 111 includes an outwardly protruding hook-shaped protrusion and a corresponding recess, the hook-shaped protrusion of the first pawl 251 can be engaged in the recess of the second pawl 111, and the hook-shaped protrusion of the second pawl 111 can be engaged in the recess of the first pawl 251. In this way, the first pawl 251 can drive the second pawl 111 to rotate synchronously in the driving direction of the drive shaft 24. When the speed of the second pawl 111 is faster than that of the first pawl 251, causing the first pawl 251 to rotate in the opposite direction relative to the second pawl 111, the two disengage, thereby realizing the engagement and disengagement of the transmission component 25 and the first feed roller. The first pawl 251 and the second pawl 111 also have the advantages of high transmission efficiency and high transmission reliability, and are also easy to maintain and adjust.

[0082] The buffer 70 is provided so that when the first pawl 251 and the second pawl 111 change from separation to engagement, it can pass through the end face of the frustum 254 ( Figure 19 (The detailed structure of the frustum 254 is shown.) The buffer element 70 provides cushioning to prevent hard contact between the first pawl 251 and the second pawl 111, reducing fatigue damage and protecting system stability. Simultaneously, the buffer element 70 absorbs some energy, preventing excessive energy loss in non-productive processes, improving transmission efficiency and reliability, and also reducing noise, especially in quiet environments. Furthermore, the presence of the third elastic element 26 can also mitigate potential impacts between the first pawl 251 and the second pawl 111 during transmission, preventing hard contact and protecting the stability of the transmission system while also reducing noise generation.

[0083] For example, the buffer 70 includes, but is not limited to, springs, rubber, and polyurethane foam, which are materials that can deform under stress to absorb and disperse impact forces, thereby reducing damage to the mechanical system.

[0084] A frustum 254 is provided at the fourth end 2502 of the transmission component 25 to contact the buffer component 70. This allows the first pawl 251 and the second pawl 111 to make contact more stable, reducing direct impact and thus reducing wear. The frustum 254 also helps to disperse pressure, resulting in a larger contact area, thereby reducing the pressure per unit area and further protecting the first pawl 251 and the second pawl 111. At the same time, the frustum 254 can also help to adjust the alignment of the transmission component 25 with the first paper feed roller 11, ensuring the accuracy and stability of the re-engagement of the first pawl 251 and the second pawl 111.

[0085] likeFigure 2 and Figure 11 As shown, in some embodiments, the third end 2501 of the transmission member 25 is provided with two first engaging portions 252. The two first engaging portions 252 are arranged relatively spaced along the circumferential direction of the transmission member 25. The two first engaging portions 252 together define engaging grooves on both sides. The first transmission gear 23 is provided with two second engaging portions 231. The second engaging portions 231 are limited in the engaging grooves. The width of the second engaging portions 231 is smaller than the width of the engaging grooves.

[0086] In the above embodiment, the width of the second engaging part 231 is less than the width of the engaging groove along the axial direction. That is, the width of the engaging groove allows the second engaging part 231 to rotate a certain distance along the circumferential direction of the drive shaft 24. This is beneficial for adjusting the angle of the transmission member 25. Specifically, when the first paper feed roller 11 is driven to rotate by the paper and disengages from the transmission member 25, the positions of the hook-shaped structure of the first pawl 251 and the groove structure of the second pawl 111 change and may not be aligned. When the first pawl 251 re-engages with the second pawl 111 under the drive of the third elastic member 26, the hook-shaped structure of the first pawl 251 and the hook-shaped structure of the second pawl 111 may be aligned. At this time, the second engaging part 231 can rotate in the engaging groove, thereby allowing the transmission member 25 to adjust its angle when subjected to the force of the hook-shaped structure of the second pawl 111, so that the recessed structure of the first pawl 251 can engage with the hook-shaped structure of the second pawl 111.

[0087] In one specific embodiment, the bottom wall of the engagement groove is perpendicular to the axis of the transmission member 25.

[0088] like Figure 11 As shown, in some embodiments, the inner cavity 221 of the transmission member 25 is formed as a stepped hole 253. The stepped hole 253 includes a first hole segment 2531 and a second hole segment 2532 connected to each other. The inner diameter of the second hole segment 2532 is larger than the inner diameter of the first hole segment 2531. The drive shaft 24 passes through the first hole segment 2531 and the second hole segment 2532. A portion of the third elastic member 26 is engaged in the drive shaft 24 and the second hole segment 2532.

[0089] like Figure 4 As shown, in the above embodiment, the third elastic member 26 is sleeved on the drive shaft 24, and the first hole segment 2531 and the second hole segment 2532 are stepped holes 253. The shoulder formed between the first hole segment 2531 and the second hole segment 2532 can limit the third elastic member 26 and abut against one end of the third elastic member 26. When the third elastic member 26 is compressed, the force is directly transmitted to the third elastic member 26 by the shoulder. When the third elastic member 26 is reset, a reset pushing force is directly generated to the shoulder.

[0090] The advantages of the above structural design are analyzed in detail below. The stepped hole 253, especially when the inner diameter of the second hole segment 2532 is larger than that of the first hole segment 2531, effectively improves the coaxiality of the drive shaft 24 and the third elastic element 26 during installation. This allows the third elastic element 26 to fit more tightly against the drive shaft 24, thereby reducing additional stress and wear caused by eccentricity. The stepped hole 253 also helps increase the stability of the third elastic element 26 after installation. Because the larger inner diameter of the second hole segment 2532 provides more support space for the third elastic element 26, it maintains better shape stability under compressive force, making it less prone to deformation or twisting. The stepped hole 253 also helps optimize the force distribution of the third elastic element 26 under stress. The larger second hole segment 2532 provides a more uniform stress surface for the third elastic element 26, allowing the compressive force to be transmitted more evenly to the third elastic element 26, avoiding damage caused by localized stress concentration. In addition, the presence of the stepped hole 253 also facilitates the installation and subsequent adjustment of the third elastic element 26. During the installation process, the third elastic element 26 can be placed into the second hole section 2532 first, and then the drive shaft 24 can be inserted into the first hole section 2531 and the second hole section 2532.

[0091] like Figure 12 As shown, a guide post 113 is provided at one end of the first paper feed roller 11 near the transmission member 25. The guide post is sleeved on the drive shaft 24, and the third elastic member 26 and the transmission member 25 are sequentially sleeved on the guide post 113.

[0092] The transaction machine according to the embodiments of this application includes the paper dispensing device described above.

[0093] According to the embodiments of the present application, the first elastic element 40 can provide a suitable frictional force, i.e., relative rotational resistance, between the first planetary gear 22 and the support seat 30, thereby avoiding the influence of machining errors between the first planetary gear 22 and the support seat 30 on the rotational resistance, reducing the machining accuracy and difficulty of the first planetary gear 22 and the support seat 30, and thus extending the service life of the transaction machine.

[0094] According to the transaction machine of this application embodiment, at low temperatures, the first paper feed roller 11 or the second paper feed roller 12 will generate a large amount of static electricity. The third elastic member 26 can effectively prevent the transmission member 25 from being unable to engage with the first paper feed roller 11 due to static electricity adsorption to the drive shaft 24. As long as the first paper feed roller 11 separates from the paper, the third elastic member 26 resets, which can drive the transmission member 25 to move along the axial direction of the drive shaft 24 and re-engage with the first paper feed roller 11. The buffer member 70 can buffer when the first pawl 251 and the second pawl 111 change from separation to engagement, reduce fatigue damage, protect system stability, and at the same time, the buffer member 70 absorbs some energy, avoiding excessive energy loss in non-productive processes, improving transmission efficiency and reliability, and also playing a role in noise reduction, especially when working in a quiet environment. In addition, the presence of the third elastic element 26 can also alleviate the impact that may occur between the first pawl 251 and the second pawl 111 during the transmission process to a certain extent, avoid hard contact between the first pawl 251 and the second pawl 111, protect the stability of the transmission system, and reduce the generation of noise.

[0095] Among them, transaction machines include, but are not limited to, photocopiers, fax machines, scanners, or multifunction printers.

[0096] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0097] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0098] The above are merely specific embodiments of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model. Therefore, this utility model is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A paper-taking device, characterized in that, include: Top cover (80), on which an arc-shaped toothed rack (81) is provided; A paper feeder (10) is provided with a first paper feed roller (11) and a second paper feed roller (12). The paper feeder (10) has a paper feeding position and a non-paper feeding position. The drive mechanism (20) is connected to the first paper feed roller (11) in a transmission connection. The drive mechanism (20) includes a power component (21) and a first planetary gear (22). The power component (21) is connected to the first planetary gear (22) in a transmission connection. When the paper picker (10) is in the paper picker position, the power component (21), the first planetary gear (22) and the second paper feed roller (12) are connected in a transmission connection in sequence. A support base (30) is provided with protrusions (31) and limiting shafts (32) on opposite sides. The first planetary gear (22) is engaged on the limiting shaft (32) and a first elastic element (40) is sandwiched between the first planetary gear (22) and the limiting shaft (32). A rocker arm (50) is provided with a sliding groove (51), and a protrusion (31) is movably connected in the sliding groove (51). A second elastic element (60) is eccentrically provided at the other end of the rocker arm (50), and the second elastic element (60) is connected to the top cover (80). The power component (21) drives the first planetary gear (22) to mesh or disengage with the arc-shaped rack (81) to move the rocker arm (50) so that the paper picker (10) switches between the paper pick position and the non-paper pick position.

2. The paper feeding device according to claim 1, characterized in that, The support base (30) is provided with a positioning groove (33), the first planetary gear (22) is provided with an inner cavity (221) and a cavity (224) spaced apart from each other, the limiting shaft (32) includes a buckle (321), the limiting shaft (32) passes through the inner cavity (221) and the buckle (321) presses against the end of the first planetary gear (22) away from the support base (30), and the first elastic element (40) is engaged in the positioning groove (33) and the cavity (224).

3. The paper-taking device according to claim 2, characterized in that, The cavity (224) is open at one end facing the support (30) and closed at the other end. The cavity (224) is coaxial with the inner cavity (221) and is arranged around the inner cavity (221) in the circumferential direction. The first elastic element (40) is configured as a spring, and the two ends of the first elastic element (40) abut against the support (30) and the first planetary gear (22) respectively.

4. The paper-taking device according to claim 3, characterized in that, The first planetary gear (22) includes a first sidewall (222) and a second sidewall (223) spaced apart in the radial direction. The cavity (224) is located between the first sidewall (222) and the second sidewall (223). The second sidewall (223) defines the inner cavity (221). The second sidewall (223) extends out of the first planetary gear (22). A portion of the spring is sleeved on the second sidewall (223).

5. The paper-taking device according to claim 2, characterized in that, The limiting shaft (32) includes a main shaft (322) and an elastic arm (323), the main shaft (322) and the elastic arm (323) are spaced apart, the elastic arm (323) is provided with the buckle (321), and the elastic arm (323) can move relative to the main shaft (322) under force.

6. The paper-taking device according to claim 1, characterized in that, The power assembly (21) includes a drive shaft (24) and a first transmission gear (23). The first planetary gear (22) meshes with the first transmission gear (23). The first paper feed roller (11) is provided with a first mounting hole (112). The drive shaft (24) passes through the first mounting hole (112) and one end is fixedly connected to the first transmission gear (23). A transmission component (25) is also sleeved on the drive shaft (24). The third end (2501) of the transmission component (25) is movably connected to the first transmission gear (23). The fourth end (2502) of the transmission component (25) is engaged or disengaged from the first paper feed roller (11). A third elastic component (26) is sandwiched between the transmission component (25) and the first transmission gear (23). The third elastic component (26) is compressible along the axial direction of the drive shaft (24).

7. The paper-taking device according to claim 6, characterized in that, The fourth end (2502) of the transmission component (25) is provided with a first pawl (251) and a frustum (254) spaced radially apart. One end of the first paper feed roller (11) is provided with a second pawl (111) and a buffer (70) spaced radially apart. The first pawl (251) and the second pawl (111) cooperate, and the frustum (254) can abut against the buffer (70).

8. The paper-taking device according to claim 7, characterized in that, The third end (2501) of the transmission member (25) is provided with two first engaging parts (252). The two first engaging parts (252) are arranged at intervals relative to each other along the circumferential direction of the transmission member (25). The two first engaging parts (252) together define engaging grooves on both sides. The first transmission gear (23) is provided with two second engaging parts (231). The second engaging parts (231) are located in the engaging grooves. The width of the second engaging parts (231) is smaller than the width of the engaging grooves.

9. The paper feeding device according to claim 8, characterized in that, The inner cavity (221) of the transmission member (25) is formed as a stepped hole (253). The stepped hole (253) includes a first hole segment (2531) and a second hole segment (2532) that are connected to each other. The inner diameter of the second hole segment (2532) is larger than the inner diameter of the first hole segment (2531). The drive shaft (24) passes through the first hole segment (2531) and the second hole segment (2532). A portion of the third elastic member (26) is engaged in the drive shaft (24) and the second hole segment (2532).

10. A transaction machine, characterized in that, Including the claims 1-9 The paper-taking device.

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