Power switching mechanism, banknote machine core and banknote machine

Abstract

The utility model relates to the technical field of financial equipment, and provides a power switching mechanism, a banknote machine core and a banknote machine. A sun wheel is respectively meshed with a driving wheel assembly, an upper planet wheel and a lower planet wheel; the driven wheel assembly is suitable for being meshed with the upper planet wheel or the lower planet wheel; one end of the pull rod is connected with the brake, and the other end of the pull rod extends towards the planet carrier and is rotationally connected with the planet carrier; one end of the clamping hook is connected with the driven wheel assembly, the clamping hook is connected to the end, away from the brake, of the pull rod, the other end of the clamping hook is hooked to the lower planet wheel shaft, the brake drives the pull rod to move so as to drive the clamping hook to be away from the lower planet wheel shaft or hooked to the lower planet wheel shaft, and when the clamping hook is hooked to the lower planet wheel shaft, the driven wheel assembly is meshed with the lower planet wheel. When the clamping hook is away from the lower planet wheel shaft, the driven wheel assembly is meshed with the upper planet wheel. And the brake can ensure the transmission between the upper planet wheel and the driven wheel only by small force, so that the labor-saving effect is achieved, the energy consumption is reduced, and the operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of financial equipment technology, and in particular to a power switching mechanism, a banknote machine mechanism, and a banknote machine. Background Technology

[0002] Existing financial self-service terminals include automatic deposit machines, automatic withdrawal machines, and automatic deposit and withdrawal machines. In order to realize the function of depositing and withdrawing banknotes between people and machines, these banknote reversible transmission channel devices are required. This device is used to transmit banknotes that users want to deposit into the self-service deposit and withdrawal device, and to transmit banknotes that users want to withdraw from the self-service deposit and withdrawal device.

[0003] In related technologies, financial self-service terminals switch input and output modes through a power switching mechanism. When the power switching mechanism is subjected to a large transmission force, it needs to increase the tension of the brake to achieve the power switching function. Increasing the tension of the brake can easily lead to unstable operation of the mechanism and increase operating costs. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in related technologies. To this end, this invention proposes a power switching mechanism designed to improve operational stability and reduce operating costs.

[0005] This utility model also proposes a banknote machine mechanism.

[0006] This utility model also proposes a banknote machine.

[0007] The power switching mechanism according to a first aspect of the present invention includes:

[0008] Drive wheel assembly;

[0009] A planetary gear assembly, comprising a planet carrier, an upper planetary gear, a sun gear, and a lower planetary gear, wherein the upper planetary gear is connected to the planet carrier via an upper axle, the lower planetary gear is connected to the planet carrier via a lower axle, and the sun gear is rotatably connected to the planet carrier, and the sun gear meshes with the drive gear assembly, the upper planetary gear, and the lower planetary gear respectively;

[0010] Driven gear assembly, the driven gear assembly being adapted to mesh with the upper planetary gear or with the lower planetary gear;

[0011] A braking assembly, comprising a brake and a lever, one end of the lever being connected to the brake, and the other end of the lever extending toward and rotatably connecting to the planetary carrier;

[0012] A hook is provided, one end of which is connected to the driven gear assembly and the other end of the pull rod away from the brake. The other end of the hook is hooked to the lower planetary gear shaft. The brake drives the pull rod to move, thereby driving the hook away from or hooking onto the lower planetary gear shaft. When the hook is hooked onto the lower planetary gear shaft, the driven gear assembly engages with the lower planetary gear. When the hook is away from the lower planetary gear shaft, the driven gear assembly engages with the upper planetary gear.

[0013] According to the power switching mechanism of this utility model embodiment, a planetary gear assembly separately drives a driving gear assembly and a driven gear assembly, so that the driving gear assembly drives the driven gear assembly to rotate. The driven gear assembly can switch between meshing with the upper planetary gear or the lower planetary gear of the planetary gear assembly, thereby switching the output power. The sun gear in the planetary gear assembly meshes with the driving gear assembly to drive the upper and lower planetary gears to rotate respectively. When the driven gear assembly meshes with the lower planetary gear, a hook secures the driven gear assembly to the lower planetary gear. At this time, the brake is not engaged; the force of the hook is sufficient to ensure the transmission between the lower planetary gear and the driven gear, ensuring smooth operation of the mechanism. When it is necessary for the driven gear assembly to mesh with the upper planetary gear, the brake engages, first pulling the hook open via a pull rod, then rotating the planet carrier to pull the lower planetary gear away from the driven gear assembly and engage the upper planetary gear with the driven gear assembly. When the driving gear assembly rotates clockwise, the circumferential force on the upper planetary gear brings it closer to the driven gear assembly. There is no need for the brake to apply a large force to make the upper planetary gear mesh with the driven gear assembly. That is, the brake only needs a small force to ensure the transmission between the upper planetary gear and the driven gear, thereby achieving a labor-saving effect, reducing energy consumption and lowering operating costs.

[0014] According to one embodiment of the present invention, the drive wheel assembly includes a meshing drive wheel and a first transition wheel, wherein the first transition wheel meshes with the sun wheel.

[0015] According to one embodiment of the present invention, the driven wheel assembly includes a driven wheel and a second transition wheel that mesh with each other. The second transition wheel is used to mesh with the upper planetary gear, and the driven wheel is used to mesh with the lower planetary gear. The hook is connected to the driven wheel.

[0016] According to one embodiment of the present invention, the hook is provided with a connecting part at one end near the driven wheel, and the pull rod is provided with a first boss at one end away from the brake. The first boss is connected to the connecting part, and the pull rod pulls the connecting part so that the hook rotates about the driven wheel as the rotation center.

[0017] According to one embodiment of the present invention, the planetary carrier is provided with a first limiting hole, and the axle of the second transition wheel is movably inserted through the first limiting hole. When the second transition wheel meshes with the upper planetary gear, the first limiting hole restricts the displacement of the second transition wheel toward the upper planetary gear. When the driven wheel meshes with the lower planetary gear, the first limiting hole restricts the displacement of the second transition wheel toward the lower planetary gear.

[0018] According to one embodiment of the present invention, the planetary carrier is provided with a second limiting hole, and the pull rod is provided with a second protrusion. The second protrusion is movably inserted through the second limiting hole, and when the hook is away from the lower planetary gear shaft, the second protrusion abuts against the inner wall of the second limiting hole.

[0019] According to one embodiment of the present invention, the power switching mechanism includes a first positioning post and a first return spring. The first positioning post is located on one side of the hook. One end of the first return spring is connected to the hook, and the other end is connected to the first positioning post. The first return spring is used to reset the hook to be hooked onto the lower planetary gear shaft.

[0020] According to one embodiment of the present invention, the power switching mechanism includes a second positioning post and a second return spring. The second positioning post is located on one side of the planetary carrier. One end of the second return spring is connected to the second positioning post, and the other end is connected to the planetary carrier. The second return spring is used to reset the planetary carrier to the position where the lower planetary gear meshes with the driven gear assembly.

[0021] The banknote machine mechanism according to a second aspect embodiment of the present invention includes the aforementioned power switching mechanism.

[0022] The banknote machine mechanism according to the present utility model includes the above-mentioned power switching mechanism, and therefore has all the technical effects of the above-mentioned power switching mechanism, which will not be repeated here.

[0023] A banknote printer according to a third aspect of the present invention includes a body and the aforementioned banknote printer mechanism. The banknote printer mechanism is disposed in the body.

[0024] The banknote machine according to the present utility model includes the above-described banknote machine mechanism, and therefore has all the technical effects of the above-described banknote machine mechanism, which will not be repeated here.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the power switching mechanism provided in an embodiment of the present invention.

[0028] Figure 2 This is a front view of the power switching mechanism provided in an embodiment of the present invention, wherein the hook is attached to the lower planetary gear shaft.

[0029] Figure 3 This is a schematic diagram of the structure of each transmission gear provided in the embodiment of this utility model, wherein the driven gear assembly meshes with the lower planetary gear.

[0030] Figure 4 This is a front view of the power switching mechanism provided in this embodiment of the utility model, wherein the hook portion is disengaged from the lower planetary gear shaft.

[0031] Figure 5 This is a front view of the power switching mechanism provided in an embodiment of the present invention, wherein the hook is completely disengaged from the lower planetary gear shaft.

[0032] Figure 6 This is a schematic diagram of the structure of each transmission gear provided in the embodiment of this utility model, wherein the driven gear assembly meshes with the upper planetary gear.

[0033] Figure 7 This is a schematic diagram of the planetary gear assembly provided in an embodiment of the present invention.

[0034] Figure label:

[0035] 1. Drive gear assembly; 11. Drive gear; 12. First transition gear; 2. Planetary gear assembly; 21. Planet carrier; 211. First limiting hole; 212. Second limiting hole; 22. Upper planetary gear; 23. Sun gear; 24. Lower planetary gear; 241. Lower planetary gear shaft; 3. Driven gear assembly; 31. Driven gear; 32. Second transition gear; 4. Braking assembly; 41. Brake; 42. Pull rod; 421. First boss; 422. Second boss; 5. Hook; 6. First positioning post; 7. First return spring; 8. Second positioning post; 9. Second return spring. Detailed Implementation

[0036] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0037] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0039] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Please refer to the reference. Figures 1 to 7According to a first aspect of the present invention, the power switching mechanism includes a driving gear assembly 1, a planetary gear assembly 2, a driven gear assembly 3, a braking assembly 4, and a catch 5. The planetary gear assembly 2 includes a planet carrier 21, an upper planetary gear 22, a sun gear 23, and a lower planetary gear 24. The upper planetary gear 22 is connected to the planet carrier 21 via an upper axle, and the lower planetary gear 24 is connected to the planet carrier 21 via a lower axle. The sun gear 23 is rotatably connected to the planet carrier 21. The sun gear 23 meshes with the driving gear assembly 1, the upper planetary gear 22, and the lower planetary gear 24 respectively. The driven gear assembly 3 is adapted to mesh with the upper planetary gear 22 or with the lower planetary gear 24. The braking assembly 4 includes a brake... The device consists of a brake 41 and a pull rod 42. One end of the pull rod 42 is connected to the brake 41, and the other end of the pull rod 42 extends toward the planetary carrier 21 and is rotatably connected to the planetary carrier 21. One end of the hook 5 is connected to the driven gear assembly 3, and the hook 5 is connected to the end of the pull rod 42 away from the brake 41. The other end of the hook 5 is hooked onto the lower planetary gear 24 shaft. The brake 41 drives the pull rod 42 to move so as to drive the hook 5 away from the lower planetary gear 24 shaft or hook onto the lower planetary gear 24 shaft. When the hook 5 is hooked onto the lower planetary gear 24 shaft, the driven gear assembly 3 is engaged with the lower planetary gear 24. When the hook 5 is away from the lower planetary gear 24 shaft, the driven gear assembly 3 is engaged with the upper planetary gear 22.

[0042] According to the power switching mechanism of this utility model embodiment, the driving gear assembly 1 and the driven gear assembly 3 are respectively driven by the planetary gear assembly 2, so that the driving gear assembly 1 drives the driven gear assembly 3 to rotate. The driven gear assembly 3 can switch between meshing with the upper planetary gear 22 or with the lower planetary gear 24 of the planetary gear assembly 2, thereby switching the output power. The sun gear 23 in the planetary gear assembly 2 is used to mesh with the driving gear assembly 1 to drive the upper planetary gear 22 and the lower planetary gear 24 to rotate respectively. When the driven gear assembly 3 is meshed with the lower planetary gear 24, the driven gear assembly 3 and the lower planetary gear 24 are locked together by the hook 5 to prevent the lower planetary gear 24 and the driven gear assembly 3 from moving away from each other. At this time, the brake 41 does not work, and the force of the hook 5 can ensure the transmission between the lower planetary gear 24 and the driven gear 31, ensuring the smooth operation of the mechanism. When the driven gear assembly 3 needs to engage with the upper planetary gear 22, the brake 41 activates, first disengaging the hook 5 from the lower planetary gear shaft 241 via the pull rod 42. Then, it simultaneously pulls the hook 5 and planetary carrier 21 to rotate, completely disengaging the hook 5 from the lower planetary gear shaft 241 and simultaneously pulling the planetary gear 24 away from the driven gear assembly 3, engaging the upper planetary gear 22 with the driven gear assembly 3. At this time, as the driving gear assembly 1 rotates clockwise, the circumferential force on the upper planetary gear 22 brings it closer to the driven gear assembly 3. The brake 41 does not need to apply a large force to engage the upper planetary gear 22 with the driven gear assembly 3; that is, the brake 41 only needs a small force to ensure transmission between the upper planetary gear 22 and the driven gear 31, thus achieving a labor-saving effect, reducing energy consumption, and lowering operating costs.

[0043] In this embodiment, the sun gear 23, the upper planet gear 22, and the lower planet gear 24 all rotate on their own axes. The clockwise rotation of the drive gear assembly 1 refers to… Figure 3 The central drive wheel 11 rotates clockwise.

[0044] Understandably, the planet carrier 21 can rotate around the axis of the sun gear 23, thereby shifting the positions of the upper planet gear 22 and the lower planet gear 24. For example, the upper planet gear 22 can be moved closer to the driven gear assembly 3, while the lower planet gear 24 can be moved away from the driven gear assembly 3. Since the catch 5 connects the axles of the driven gear assembly 3 and the lower planet gear 24 respectively, to engage the upper planet gear 22 with the driven gear assembly 3, the catch 5 and the axle of the lower planet gear 24 need to be unlocked. For example, the brake 41 can partially disengage the catch 5 from the lower planet gear axle 241 via the pull rod 42 during its working stroke, and then simultaneously pull the catch 5 and the planet carrier 21 to rotate, thereby pulling the lower planet gear 24 away from the driven gear 31 so that the upper planet gear 22 engages with the driven gear assembly 3. The brake 41 can be an electromagnet, a linear motor, etc., as long as it can drive the pull rod 42 to move.

[0045] like Figure 1 As shown, according to one embodiment of the present invention, the drive wheel assembly 1 includes a drive wheel 11 and a first transition wheel 12 that mesh with each other, and the first transition wheel 12 meshes with the sun wheel 23. It can be understood that the first transition wheel 12 is used to drive the drive wheel 11 and the sun wheel 23, so as to facilitate adjustment of the relative positions of the drive wheel 11 and the sun wheel 23, and to facilitate the installation of the drive wheel 11.

[0046] According to one embodiment of the present invention, the driven wheel assembly 3 includes a driven wheel 31 and a second transition wheel 32 that mesh with each other. The second transition wheel 32 is used to mesh with the upper planetary gear 22, and the driven wheel 31 is used to mesh with the lower planetary gear 24. A hook 5 is connected to the driven wheel 31. It can be understood that power is output outward through the driven wheel 31. Since the upper planetary gear 22 and the lower planetary gear 24 rotate in the same direction, without changing the rotation directions of the upper planetary gear 22 and the lower planetary gear 24, when the driven wheel 31 directly meshes with the lower planetary gear 24, the rotation direction of the driven wheel 31 is opposite to that of the lower planetary gear 24. However, when the second transition wheel 32 meshes with the upper planetary gear 22, the rotation direction of the driven wheel 31 is the same as that of the upper planetary gear 22. Thus, the rotation direction of the driven wheel 31 can be switched. For example, if the lower planetary gear 24 rotates clockwise and the driven gear 31 is engaged with it, then the driven gear 31 will rotate counterclockwise. If the second transition gear 32 is engaged with the upper planetary gear 22, since the upper planetary gear 22 rotates clockwise, then the driven gear 31 will rotate clockwise. It should be noted that the engagement of the driven gear 31 with the lower planetary gear 24 and the engagement of the second transition gear 32 with the upper planetary gear 22 cannot occur simultaneously.

[0047] According to one embodiment of the present invention, the hook 5 is provided with a connecting part at one end near the driven wheel 31, and the pull rod 42 is provided with a first boss 421 at one end away from the brake 41. The first boss 421 is connected to the connecting part, and the pull rod 42 pulls the connecting part so that the hook 5 rotates around the driven wheel 31 as the rotation center.

[0048] Understandably, a first locking hole is provided at the connecting part, and a first protrusion 421 passes through the first locking hole to connect the pull rod 42 and the hook 5. With the driven wheel 31 as the rotation center, when the pull rod 42 pulls the connecting part, the other end of the hook 5, which is hooked on the lower planetary gear 24 shaft, moves away from the lower planetary gear 24 shaft, thereby disengaging from the hooked position and unlocking the driven wheel 31 from the lower planetary gear 24. Under the rotation of the planet carrier 21, the lower planetary gear 24 can move away from the driven wheel 31 to achieve power switching.

[0049] like Figure 2 As shown, according to one embodiment of the present invention, the planetary carrier 21 is provided with a first limiting hole 211, and the axle of the second transition wheel 32 is movably inserted through the first limiting hole 211. When the second transition wheel 32 meshes with the upper planetary gear 22, the first limiting hole 211 restricts the displacement of the second transition wheel 32 toward the upper planetary gear 22. When the driven wheel 31 meshes with the lower planetary gear 24, the first limiting hole 211 restricts the displacement of the second transition wheel 32 toward the lower planetary gear 24.

[0050] Understandably, the first limiting hole 211 is an elongated hole, which can limit the relative position of the second transition gear 32 and the planet carrier 21, ensuring appropriate tooth clearance when the upper planet gear 22 meshes with the driven gear 31 and the lower planet gear 24 meshes with the driven gear 31. For example, since the axle of the second transition gear 32 is movably inserted through the first limiting hole 211, as the planet carrier 21 rotates, causing the upper planet gear 22 to approach and mesh with the second transition gear 32, the second transition gear 32 moves in the first direction within the first limiting hole 211. When the upper planet gear 22 and the second transition gear 32 are fully meshed, the axle of the second transition gear 32 abuts against the upper inner wall of the first limiting hole 211, preventing the second transition gear 32 and the upper planet gear 22 from continuing to approach each other, thereby ensuring a suitable distance between them and appropriate tooth clearance. Meanwhile, as the planet carrier 21 rotates, causing the lower planetary gear 24 to move toward the driven gear 31, the axle of the second transition gear 32 moves in the second direction within the first limiting hole 211. The second direction is opposite to the first direction. When the lower planetary gear 24 and the driven gear 31 are fully engaged, the axle of the second transition gear 32 abuts against the lower inner wall of the first limiting hole 211, thereby restricting the planet carrier 21 from continuing to rotate and ensuring that the driven gear 31 and the lower planetary gear 24 maintain a suitable distance to ensure that the tooth clearance between them is appropriate.

[0051] According to one embodiment of the present invention, the planetary carrier 21 is provided with a second limiting hole 212, and the pull rod 42 is provided with a second protrusion 422. The second protrusion 422 is movably inserted through the second limiting hole 212. When the hook 5 is away from the lower planetary gear 24 shaft, the second protrusion 422 abuts against the inner wall of the second limiting hole 212.

[0052] When the driving wheel 11 and the driven wheel 31 need to rotate in opposite directions, the brake 41 engages. At this time, the brake 41 moves the lever 42 to the upper left, and the first boss 421 contacts the hook 5, causing the hook 5 to rotate clockwise and move away from the lower planetary gear 24 shaft. The second boss 422 moves in the second limiting hole 212 of the planet carrier 21 but does not contact the planet carrier 21. Since the planet carrier 21 does not move at this time, the hook 5 can smoothly move away from the lower planetary gear 24 shaft.

[0053] As the brake 41 continues to engage, it moves the lever 42 to the upper left. The first boss 421 contacts the hook 5 and continues to rotate the hook 5 clockwise away from the lower planetary gear 24 shaft. The second boss 422 gradually contacts the inner wall of the second limiting hole 212 of the planetary carrier 21, at which point the second boss 422 can rotate the planetary carrier 21 clockwise. When the upper inner wall of the first limiting hole 211 contacts the axle of the second transition gear 32, the upper planetary gear 22 meshes with the second transition gear 32. The first limiting hole 211 ensures the tooth clearance between the upper planetary gear 22 and the second transition gear 32 during meshing.

[0054] According to one embodiment of this utility model, the power switching mechanism includes a first positioning post 6 and a first return spring 7. The first positioning post 6 is located on one side of the hook 5. One end of the first return spring 7 is connected to the hook 5, and the other end is connected to the first positioning post 6. The first return spring 7 is used to return the hook 5 to its position hooked onto the lower planetary gear 24 shaft. It can be understood that when the pull rod 42 pulls the hook 5 to rotate away from the lower planetary gear 24 shaft, the first return spring 7, under its elastic restoring force, causes the hook 5 to tend to rotate towards the lower planetary gear 24 shaft. Thus, when the brake 41 is not working, the hook 5 automatically returns to its position hooked onto the lower planetary gear 24 shaft. The installation positions of the first positioning post 6 and the first return spring 7 are not limited here.

[0055] According to one embodiment of the present invention, the power switching mechanism includes a second positioning post 8 and a second return spring 9. The second positioning post 8 is located on one side of the planetary carrier 21. One end of the second return spring 9 is connected to the second positioning post 8 and the other end is connected to the planetary carrier 21. The second return spring 9 is used to reset the planetary carrier 21 to the position where the lower planetary gear 24 meshes with the driven gear assembly 3.

[0056] Understandably, the pull rod 42 pulls the planetary carrier 21 to rotate, causing the upper planetary gear 22 to move closer to the driven gear assembly 3 and the lower planetary gear 24 to move away from the driven gear assembly 3. Conversely, the elastic restoring force of the second return spring 9 causes the planetary carrier 21 to rotate, making the upper planetary gear 22 tend to move away from the driven gear assembly 3. Thus, when the brake 41 is not engaged, the planetary carrier 21 automatically resets, causing the upper planetary gear 22 to move away from the driven gear assembly 3, restoring the lower planetary gear 24 to be engaged with the driven gear assembly 3. For example, the pull rod 42 pulls the planetary gears to rotate clockwise, while the second return spring 9 makes the planetary carrier 21 tend to rotate counterclockwise. The installation positions of the second positioning pin 8 and the second return spring 9 are not limited here.

[0057] The banknote machine mechanism according to a second aspect embodiment of the present invention includes the aforementioned power switching mechanism.

[0058] The banknote machine mechanism according to the present utility model includes the above-mentioned power switching mechanism, and therefore has all the technical effects of the above-mentioned power switching mechanism, which will not be repeated here.

[0059] A banknote printer according to a third aspect of the present invention includes a body and the aforementioned banknote printer mechanism. The banknote printer mechanism is disposed in the body.

[0060] The banknote machine according to the present utility model includes the above-described banknote machine mechanism, and therefore has all the technical effects of the above-described banknote machine mechanism, which will not be repeated here.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be covered within the scope of the claims of the present invention.

Claims

1. A power switching mechanism, characterized in that, include: Drive wheel assembly; A planetary gear assembly, comprising a planet carrier, an upper planetary gear, a sun gear, and a lower planetary gear, wherein the upper planetary gear is connected to the planet carrier via an upper axle, the lower planetary gear is connected to the planet carrier via a lower axle, and the sun gear is rotatably connected to the planet carrier, and the sun gear meshes with the drive gear assembly, the upper planetary gear, and the lower planetary gear respectively; Driven gear assembly, the driven gear assembly being adapted to mesh with the upper planetary gear or with the lower planetary gear; A braking assembly, comprising a brake and a lever, one end of the lever being connected to the brake, and the other end of the lever extending toward and rotatably connecting to the planetary carrier; A hook is provided, one end of which is connected to the driven gear assembly and the other end of the pull rod away from the brake. The other end of the hook is hooked to the lower planetary gear shaft. The brake drives the pull rod to move, thereby driving the hook away from or hooking onto the lower planetary gear shaft. When the hook is hooked onto the lower planetary gear shaft, the driven gear assembly engages with the lower planetary gear. When the hook is away from the lower planetary gear shaft, the driven gear assembly engages with the upper planetary gear.

2. The power switching mechanism according to claim 1, characterized in that, The drive wheel assembly includes a meshing drive wheel and a first transition wheel, wherein the first transition wheel meshes with the sun wheel.

3. The power switching mechanism according to claim 1, characterized in that, The driven wheel assembly includes a driven wheel and a second transition wheel that mesh with each other. The second transition wheel is used to mesh with the upper planetary gear, and the driven wheel is used to mesh with the lower planetary gear. The hook is connected to the driven wheel.

4. The power switching mechanism according to claim 3, characterized in that, The hook has a connecting part at one end near the driven wheel, and the pull rod has a first boss at one end away from the brake. The first boss is connected to the connecting part, and the pull rod pulls the connecting part so that the hook rotates around the driven wheel as the rotation center.

5. The power switching mechanism according to claim 3, characterized in that, The planetary carrier is provided with a first limiting hole, and the axle of the second transition wheel is movably inserted through the first limiting hole. When the second transition wheel meshes with the upper planetary gear, the first limiting hole restricts the displacement of the second transition wheel toward the upper planetary gear. When the driven wheel meshes with the lower planetary gear, the first limiting hole restricts the displacement of the second transition wheel toward the lower planetary gear.

6. The power switching mechanism according to claim 5, characterized in that, The planetary carrier is provided with a second limiting hole, and the pull rod is provided with a second protrusion. The second protrusion is movably inserted through the second limiting hole. When the hook moves away from the lower planetary gear shaft, the second protrusion abuts against the inner wall of the second limiting hole.

7. The power switching mechanism according to any one of claims 1 to 6, characterized in that, The power switching mechanism includes a first positioning post and a first return spring. The first positioning post is located on one side of the hook. One end of the first return spring is connected to the hook, and the other end is connected to the first positioning post. The first return spring is used to reset the hook to be hooked onto the lower planetary gear shaft.

8. The power switching mechanism according to any one of claims 1 to 6, characterized in that, The power switching mechanism includes a second positioning post and a second return spring. The second positioning post is located on one side of the planetary carrier. One end of the second return spring is connected to the second positioning post, and the other end is connected to the planetary carrier. The second return spring is used to reset the planetary carrier to the position where the lower planetary gear meshes with the driven gear assembly.

9. A banknote printing machine mechanism, characterized in that, Includes the power switching mechanism as described in any one of claims 1 to 8.

10. A banknote printing machine, characterized in that, It includes a body and a banknote machine mechanism as described in claim 9, wherein the banknote machine mechanism is disposed in the body.

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