One-way transmission structure

Abstract

The present invention is applicable to the field of clutches and provides a one-way transmission structure, including an input wheel, a retaining frame, an output wheel, a connecting shaft, and a transmission member; the input wheel, the retaining frame, and the output wheel are all sleeved on the connecting shaft and arranged in sequence and all rotate with the connecting shaft as the rotation axis; the input wheel has a supporting wall inclined toward the retaining frame, the retaining frame has a receiving hole, and there is at least one transmission member, which is respectively placed in one of the receiving holes. When the output wheel rotates, the supporting wall can press the transmission member so that the transmission member presses the output wheel. The one-way transmission structure provided by the present invention can realize one-way transmission between the input wheel and the output wheel, has a compact and delicate structure, is simple to assemble, and has better transmission stability.

Description

Technical Field

[0001] The invention belongs to the field of clutches, and in particular relates to a one-way transmission structure. Background Art

[0002] Existing one-way clutches consist of an outer race, an inner race, a retainer, and a wedge. When the inner race is fixed, the outer race rotates counterclockwise without locking the wedge, allowing the outer race to rotate freely. When the outer race rotates clockwise, the wedge locks and prevents the outer race from rotating. The clutching effect of a one-way clutch depends on the coordination of the wedge with other components, placing high demands on the wedge's shape, manufacturing precision, and assembly position. Existing one-way clutches are prone to slippage due to wedge dimensional deviations or wear from prolonged use. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a one-way transmission structure, which aims to achieve one-way transmission of two structural members while improving the stability of the transmission.

[0004] A one-way transmission structure includes an input wheel, a retaining frame, an output wheel, a connecting shaft and at least one forward-rotating transmission member;

[0005] The input wheel, the retaining frame and the output wheel are all sleeved on the connecting shaft and arranged in sequence and can rotate with the connecting shaft as the rotation axis;

[0006] The input wheel includes a wheel body and at least one protrusion connected to the wheel body and facing the retaining frame, and each protrusion has a positive rotation supporting wall inclined toward the retaining frame;

[0007] The retaining frame is provided with at least one forward rotation accommodating hole extending along the extending direction of the connecting shaft;

[0008] Any one of the forward-rotation transmission members is placed in one of the forward-rotation accommodating holes and has the freedom to move along the extending direction of the connecting shaft, and its dimension in the extending direction of the connecting shaft is smaller than the distance between the wheel body and the output wheel;

[0009] The input wheel serves as a driving wheel and rotates forward, causing the forward-rotating abutting wall to press against the forward-rotating transmission member, so that the forward-rotating transmission member moves toward the output wheel and presses against the output wheel, thereby driving the output wheel to rotate.

[0010] Optionally, each of the protrusions also has a reversal support wall inclined toward the retaining frame; the retaining frame also has at least one reversal accommodating hole arranged through the extension direction of the connecting shaft; the one-way transmission structure also includes at least one reversal transmission member, any of the reversal transmission members is placed in one of the reversal accommodating holes and has the freedom to move along the extension direction of the connecting shaft, and its dimension in the extension direction of the connecting shaft is smaller than the spacing between the wheel body and the output wheel; the input wheel reverses as the driving wheel and causes the reversal support wall to press against the reversal transmission member, so that the reversal transmission member moves toward the output wheel and presses against the output wheel, thereby driving the output wheel to rotate.

[0011] Optionally, there are multiple protrusions and they are arranged at equal intervals along the circumference of the wheel body.

[0012] Optionally, the forward transmission member and the reverse transmission member are both spherical.

[0013] Optionally, the angle at which the forward-rotating abutting wall is inclined toward the retaining frame is equal to the angle at which the reverse-rotating abutting wall is inclined toward the retaining frame.

[0014] Optionally, a forward transmission member and a reverse transmission member are provided between the two protrusions.

[0015] Optionally, the forward transmission member is slidably connected to the retaining frame, and the reverse transmission member is slidably connected to the retaining frame.

[0016] Optionally, the one-way transmission structure further includes a blocking member for applying static friction force to the retaining frame.

[0017] Optionally, the blocking member is a rubber ring.

[0018] Optionally, the retaining frame is provided with a placement groove for the blocking member on a surface facing the connecting shaft, and the blocking member abuts against the connecting shaft and the retaining frame at the same time.

[0019] The one-way transmission structure provided by the present invention can achieve one-way transmission between the input and output wheels. It is a purely mechanical structure that does not require electrical control. It has a compact and sophisticated structure, is easy to assemble, and is less prone to slippage than existing designs, achieving more stable transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A front view of a one-way transmission structure provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the disassembly of the one-way transmission structure provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a disassembled one-way transmission structure provided in an embodiment of the present application from another angle;

[0024] Figure 4 A cross-sectional view of the forward-rotating transmission member of the one-way transmission structure provided in an embodiment of the present application.

[0025] Among them, the reference numerals in the figures are:

[0026] 10. Input wheel; 11. Wheel body; 12. Bump; 101. Forward rotation abutment wall; 102. Reverse rotation abutment wall; 20. Retaining frame; 30. Output wheel; 40. Forward rotation transmission member; 50. Reverse rotation transmission member; 60. Connecting shaft; 70. Blocking member. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] Please refer to Figures 1 to 4 This embodiment provides a one-way transmission structure, including an input wheel 10, a retaining frame 20, an output wheel 30, a connecting shaft 60 and at least one forward-rotating transmission member 40.

[0032] The input wheel 10, retainer 20, and output wheel 30 are all sleeved onto the connecting shaft 60 and arranged sequentially, each capable of rotating about the connecting shaft 60. In this embodiment, the input wheel 10, retainer 20, and output wheel 30 are all rotatably connected to the connecting shaft 60. In other embodiments, one of the input wheel 10, retainer 20, and output wheel 30 may be fixedly connected to the connecting shaft 60. In other words, the input wheel 10, retainer 20, and output wheel 30 are relatively independent structures and do not interact with each other in the absence of other structures.

[0033] The input wheel 10 includes a wheel body 11 and at least one protrusion 12 connected to the wheel body 11 on the side facing the retainer 20. Each protrusion 12 has a positive rotation abutment wall 101 inclined toward the retainer 20.

[0034] The retainer 20 is provided with at least one forward rotation accommodating hole extending along the extending direction of the connecting shaft 60;

[0035] Any forward-rotation transmission member 40 is placed in a forward-rotation accommodating hole and has the freedom to move along the extension direction of the connecting shaft 60 , and its dimension in the extension direction of the connecting shaft 60 is smaller than the distance between the wheel body 11 and the output wheel 30 ;

[0036] The input wheel 10 as the driving wheel rotates forward, causing the forward-rotating abutting wall 101 to press the forward-rotating transmission member 40 , so that the forward-rotating transmission member 40 moves toward the output wheel 30 and presses the output wheel 30 , thereby driving the output wheel 30 to rotate.

[0037] In conjunction with the drawings, for ease of description, the arrangement direction of the input wheel 10, the retaining frame 20 and the output wheel 30 is defined as being arranged from bottom to top. The extending direction of the connecting shaft 60 is the up-down direction.

[0038] The forward rotation supporting wall 101 , the forward rotation transmission member 40 and the forward rotation accommodating hole are correspondingly arranged, and the reverse rotation supporting wall 102 , the reverse rotation transmission member 50 and the reverse rotation accommodating hole are correspondingly arranged.

[0039] The vertical dimension of the forward transmission member 40 is larger than the thickness of the retaining frame 20 and smaller than the distance between the output wheel 30 and the wheel body 11 .

[0040] When the input wheel 10 rotates forward, the forward rotation supporting wall 101 rotates accordingly and presses against the forward rotation transmission member 40. Since the forward rotation supporting wall 101 is inclined upward, an upward component force is applied to the forward rotation transmission member 40. Under the operation of this component force, the forward rotation transmission member 40 moves upward and protrudes from the forward rotation accommodating hole and presses against the output wheel 30. At this time, the input wheel 10, the forward rotation transmission member 40 and the output wheel 30 are in an engaged state, and the output wheel 30 rotates with the input wheel 10.

[0041] When the output wheel 30 rotates as the driving wheel, it is undeniable that torque will not be transmitted to the input wheel 10, regardless of whether it is rotating forward or reverse. Before the output wheel 30 rotates, the forward transmission member 40 is initially in a state of contact with or separation from the output wheel 30. Regardless of whether the output wheel 30 rotates forward or reverse, when the forward transmission member 40 is separated from the output wheel 30, the rotation of the output wheel 30 will not affect the forward transmission member 40, and torque will not be transmitted to the input wheel 10 via the forward transmission member 40. When the forward transmission member 40 is in contact with the output wheel 30, the output wheel 30 rotates, exerting a friction force rotating in the same direction on the forward transmission member 40. That is, the direction of this friction force is horizontal, and it cannot drive the forward transmission member 40 downward to press against the input wheel 10.

[0042] Those skilled in the art can set the forward rotation direction to clockwise or counterclockwise according to actual needs.

[0043] It should be noted that reversing the vertical position of the input and output wheels 10 and 30 does not affect the above analysis results. As long as the connection between the components of the one-way transmission structure is fixed, the overall placement of the one-way transmission structure does not affect the one-way transmission effect of the input and output wheels 10 and 30.

[0044] The one-way transmission structure provided in this embodiment is simple to assemble by simply placing each forward transmission member 40 in each forward accommodating hole and then sleeve-connecting the input wheel 10 , the retaining frame 20 and the output wheel 30 to the connecting shaft 60 .

[0045] The clutch effect of the one-way transmission structure is mainly affected by the inclination angle of the forward-rotating supporting wall 101 and the distance between the forward-rotating transmission member 40 and the wheel body 11 / output wheel 30. Compared with the existing wedge block, the above factors are simpler in design and easier to obtain a stable fitting relationship, which is not easy to slip, thereby improving the stability of the transmission.

[0046] In summary, the one-way transmission structure provided in this embodiment can achieve one-way transmission between the input wheel 10 and the output wheel 30. It is a purely mechanical structure that does not require electrical control. It has a compact and sophisticated structure, is easy to assemble, and can achieve more stable transmission compared to existing designs.

[0047] In this embodiment, the forward-rotating transmission member 40 and the retaining frame 20 are slidably connected. The forward-rotating transmission member 40 is limited in its horizontal movement (forward, backward, left, and right) by the forward-rotating accommodating hole, and is able to move up and down relative to the forward-rotating accommodating hole. This allows the forward-rotating transmission member 40 to move freely along the rotation axis 60 (up and down). In other embodiments, the forward-rotating transmission member 40 and the retaining frame 20 may also be fixedly connected, with the retaining frame 20 slidingly connected to the connecting shaft 60, and the retaining frame 20 being able to move up and down relative to the connecting shaft 60 to achieve the up and down movement of the forward-rotating transmission member 40.

[0048] In this embodiment, please refer to Figure 4 , the forward-rotating transmission member 40 is a sphere. In other embodiments, the forward-rotating transmission member 40 may be a cylinder with a spherical lower surface. The spherical lower surface of the forward-rotating transmission member 40 helps reduce the difficulty of moving the forward-rotating transmission member 40 relative to the forward-rotating support wall 101. Those skilled in the art may also configure the lower surface of the forward-rotating transmission member 40 to be an inclined surface that mates with the forward-rotating support wall 101. The forward-rotating transmission member 40 may be cylindrical, but this is not intended to be a limitation.

[0049] The forward-rotation transmission member 40 is spherical, and when placed in the forward-rotation accommodating hole, its center is positioned near the retaining frame 20, toward the input pulley 10. In other words, the center of the forward-rotation transmission member 40 is offset from the vertical midpoint of the forward-rotation accommodating hole and toward the input pulley 10. The upper end of the forward-rotation accommodating hole has a smaller diameter than the lower end. During assembly, the forward-rotation transmission member 40 is inserted into the forward-rotation accommodating hole from the bottom up, with the upper end restricting its upward movement, facilitating assembly.

[0050] In another embodiment of the present application, please refer to Figure 2 There are multiple protrusions 12 and they are spaced apart along the circumference of the wheel body 11. This arrangement allows multiple forward transmission members 40 to transmit simultaneously when the input wheel 10 rotates, so that the output wheel 30 is driven by multiple forces at the same time, which is beneficial to transmission stability.

[0051] Preferably, the projections 12 are arranged at equal intervals. This arrangement enables the output wheel 30 to be driven by multiple forces simultaneously when the input wheel 10 rotates, and the operating points of each force are arranged at equal intervals, thereby further improving transmission stability.

[0052] In another embodiment of the present application, please refer to Figure 2Each protrusion 12 also has a reverse abutment wall 102 that is inclined toward the retainer 20. The retainer 20 also defines at least one reverse accommodating hole extending along the extension direction of the connecting shaft 60. The one-way transmission structure also includes at least one reverse transmission member 50. Each reverse transmission member 50 is positioned in a reverse accommodating hole and has the freedom to move along the extension direction of the connecting shaft 60. Its dimension along the extension direction of the connecting shaft 60 is smaller than the distance between the wheel body 11 and the output wheel 30.

[0053] The input wheel 10 as the driving wheel rotates reversely to cause the reverse abutting wall 102 to press the reverse transmission member 50 , so that the reverse transmission member 50 moves toward the output wheel 30 and presses the output wheel 30 to drive the output wheel 30 to rotate.

[0054] When the input wheel 10 reverses, the reverse abutting wall 102 rotates accordingly and presses against the reverse transmission member 50. Since the reverse abutting wall 102 is inclined upward, an upward force component is applied to the reverse transmission member 50. Under the operation of this force component, the reverse transmission member 50 moves upward and protrudes from the reverse accommodating hole and presses against the output wheel 30. At this time, the input wheel 10, the reverse transmission member 50 and the output wheel 30 are in an engaged state, and the output wheel 30 rotates with the input wheel 10.

[0055] It should be noted that when the input wheel 10 rotates forward, the reverse transmission member 50 is in a free state (freely moving in the reverse accommodating hole) because it does not abut against the reverse supporting wall 102. When the input wheel 10 reverses, the forward transmission member 40 is in a free state (freely moving in the forward accommodating hole) because it does not abut against the forward supporting wall 101.

[0056] The arrangement of the reverse supporting wall 102, the reverse transmission member 50 and the reverse accommodating hole enables the input wheel 10 to drive the output wheel 30 to rotate regardless of forward or reverse rotation, thereby improving the practicality of the one-way transmission structure.

[0057] In the illustrated structure, viewed from above, the front surface of the projection 12 in the clockwise direction serves as the forward rotation abutment wall 101, while the rear surface serves as the reverse rotation abutment wall 102. That is, the forward rotation direction is clockwise, and the reverse rotation direction is counterclockwise. The front surface is tilted upward and rearward to provide diagonal upward pressure on the forward rotation transmission member 40 when the projection 12 rotates clockwise, while the rear surface is tilted upward and forward to provide diagonal upward pressure on the reverse rotation transmission member 50 when the projection 12 rotates counterclockwise.

[0058] In this embodiment, the structure and size of the reverse transmission member 50 are the same as those of the forward transmission member 40 , and only the position is different.

[0059] In another embodiment of the present application, the angle at which the forward-rotating abutting wall 101 is inclined toward the retaining frame 20 is equal to the angle at which the reverse-rotating abutting wall 102 is inclined toward the retaining frame 20. It should be noted that the angles being equal here refer to being equal in value, not in direction. In combination with the foregoing, the forward-rotating abutting wall 101 is inclined upward and backward, and the reverse-rotating abutting wall 102 is inclined upward and forward. The inclination directions of the forward-rotating abutting wall 101 and the reverse-rotating abutting wall 102 are different, but the values of the inclination angles of the forward-rotating abutting wall 101 and the reverse-rotating abutting wall 102 relative to the retaining frame 20 (forward / backward) are the same. The forward-rotating abutting wall 101 and the reverse-rotating abutting wall 102 are symmetrically arranged front and back in the clockwise direction of the protrusion 12, so that the output wheel 30 obtains the same torque regardless of whether the input wheel 10 rotates forward or reversely.

[0060] In another embodiment of the present application, please refer to Figure 1 A forward transmission member 40 and a reverse transmission member 50 are provided between the two protrusions 12. The forward transmission member 40 and the reverse transmission member 50 are independently spaced apart. The forward accommodating hole and the reverse accommodating hole are independently spaced apart. The forward transmission member 40 and the reverse transmission member 50 are alternately arranged. Between the two protrusions 12, the forward transmission member 40 is located behind the reverse transmission member 50 in the clockwise direction. When the input wheel 10 rotates forward, the forward transmission member 40 abuts against the forward support wall 101, and when the input wheel 10 reverses, the reverse transmission member 50 abuts against the reverse support wall 102. Two transmission members (a forward transmission member 40 and a reverse transmission member 50) are provided between the two protrusions 12. This arrangement can ensure the required movable space for the transmission members while reducing the required movement distance of the input wheel 10 relative to the retaining frame 20 during the direction conversion process from forward to reverse (or from reverse to forward). In other words, it can increase the linkage speed of the output wheel 30 when the input wheel 10 is reversing the transmission.

[0061] In another embodiment of the present application, the forward transmission member 40 and the reverse transmission member 50 are integrally provided, and the forward accommodating hole and the reverse accommodating hole are integrally provided. In this arrangement, the forward transmission member 40 is the reverse transmission member 50, and the forward accommodating hole is the reverse accommodating hole. In other words, a transmission member is provided between the two protrusions 12, and the transmission member is placed in the accommodating hole. When the input wheel 10 rotates forward, the transmission member abuts the forward support wall 101. At this time, the transmission member assumes the function of the forward transmission member 40. When the input wheel 10 rotates reversely, the transmission member abuts the reverse support wall 102. At this time, the transmission member assumes the function of the reverse transmission member 50.

[0062] In another embodiment of the present application, the one-way transmission structure further includes a blocking member 70 for applying a static friction force to the retaining frame 20. When the input wheel 10 rotates forward, the forward abutting wall 101 presses against the forward transmission member 40 and provides an oblique upward force. The movement of the forward transmission member 40 / reverse transmission member 50 requires breaking its static inertia. The provision of the blocking member 70 can increase the inertia that the forward transmission member 40 / reverse transmission member 50 needs to overcome in order to move. In other words, the blocking member 70 is equivalent to applying a resistance to the forward transmission member 40 / reverse transmission member 50 that hinders its rotation. The direction of this resistance is opposite to the direction of rotation, which helps the retaining frame 20 to remain stationary in the horizontal direction when the input wheel 10 rotates, and helps the forward transmission member 40 / reverse transmission member 50 to move upward along the forward abutting wall 101 / reverse abutting wall 102 to press against the output wheel 30. When the structures of the input wheel 10, the retaining frame 20 and the forward transmission member 40 / reverse transmission member 50 are consistent, the addition of the blocking member 70 increases the distance that the forward transmission member 40 / reverse transmission member 50 can move upward. When the distance between the retaining frame 20 and the output wheel 30 is fixed, the pressing force between the forward transmission member 40 / reverse transmission member 50 and the output wheel 30 can be further improved, thereby ensuring the engagement effect of the output wheel 30 and the input wheel 10.

[0063] In this embodiment, the blocking member 70 is a rubber ring. In other embodiments, the blocking member 70 can also be replaced by applying resistance glue between the retainer 20 and the connecting shaft 60, or by other methods that can increase the static friction between the retainer 20 and the connecting shaft 60. Compared to other designs, the blocking member 70 is a rubber ring design, so if the blocking member 70 wears out, it can be replaced without causing wear or other impacts on the structures of the retainer 20 or the connecting shaft 60.

[0064] In another embodiment of the present application, please refer to Figure 3 and Figure 4 The retainer 20 has a placement slot on the surface facing the connecting shaft 60 for the blocking member 70. The blocking member 70 abuts both the connecting shaft 60 and the retainer 20. During assembly, the rubber ring is inserted onto the connecting shaft 60, and then the retainer 20 is inserted onto the connecting shaft 60, with the rubber ring positioned in the placement slot. The placement slot provides positioning for the blocking member 70 while ensuring that the addition of the blocking member 70 does not affect the relative position and relationship between the output wheel 30, the input wheel 10, and the retainer 20. The output wheel 30 and the input wheel 10 do not need to be adjusted due to the addition of the blocking member 70.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A one-way transmission structure, characterized in that: It includes an input wheel, a retaining frame, an output wheel, a connecting shaft and at least one forward transmission member; The input wheel, the retaining frame and the output wheel are all sleeved on the connecting shaft and arranged in sequence and can rotate with the connecting shaft as the rotation axis; The input wheel includes a wheel body and at least one protrusion connected to the wheel body and facing the retaining frame, and each protrusion has a positive rotation supporting wall inclined toward the retaining frame; The retaining frame is provided with at least one forward rotation accommodating hole extending along the extending direction of the connecting shaft; Any one of the forward-rotation transmission members is placed in one of the forward-rotation accommodating holes and has the freedom to move along the extending direction of the connecting shaft, and its dimension in the extending direction of the connecting shaft is smaller than the distance between the wheel body and the output wheel; The input rotating wheel serves as a driving wheel and rotates forward, causing the forward-rotating abutting wall to press against the forward-rotating transmission member, so that the forward-rotating transmission member moves toward the output rotating wheel and presses against the output rotating wheel, thereby driving the output rotating wheel to rotate; The one-way transmission structure further includes a blocking member for applying a static friction force to the retaining frame, wherein the blocking member abuts against the connecting shaft and the retaining frame simultaneously.

2. The one-way transmission structure according to claim 1, characterized in that: Each of the protrusions also has a reverse supporting wall inclined toward the retaining frame; The retaining frame is further provided with at least one inversion accommodating hole extending along the extending direction of the connecting shaft; The one-way transmission structure further includes at least one reverse transmission member, any of which is placed in one of the reverse accommodating holes and has the freedom to move along the extension direction of the connecting shaft, and its dimension in the extension direction of the connecting shaft is smaller than the distance between the wheel body and the output wheel; The input wheel functions as a driving wheel and reverses to cause the reverse holding wall to press the reverse transmission member, so that the reverse transmission member moves toward the output wheel and presses the output wheel, thereby driving the output wheel to rotate.

3. The one-way transmission structure according to claim 2, characterized in that: There are a plurality of protrusions which are arranged at equal intervals along the circumference of the wheel body.

4. The one-way transmission structure according to claim 2, characterized in that: A forward transmission member and a reverse transmission member are provided between the two protrusions.

5. The one-way transmission structure according to claim 2, characterized in that: The forward transmission member and the reverse transmission member are both spherical.

6. The one-way transmission structure according to claim 2, characterized in that: The angle at which the forward-rotation abutting wall is inclined toward the retaining frame is equal to the angle at which the reverse-rotation abutting wall is inclined toward the retaining frame.

7. The one-way transmission structure according to claim 2, characterized in that: The forward transmission member is slidably connected to the retaining frame, and the reverse transmission member is slidably connected to the retaining frame.

8. The one-way transmission structure according to any one of claims 2 to 7, characterized in that: The blocking member is a rubber ring.

9. The one-way transmission structure according to claim 8, characterized in that: The retaining frame is provided with a placement groove for placing the blocking member on a surface facing the connecting shaft, and the structural dimensions of the reverse transmission member are the same as those of the forward transmission member.

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