Transmission mechanism

Abstract

The utility model discloses a transmission mechanism which comprises a rotating shaft, a first speed change assembly, a second speed change assembly and a switching assembly. The first speed change assembly comprises a first driving wheel and a first driven wheel, the first driving wheel is arranged on the rotating shaft and engaged with the first driven wheel, and the first driven wheel is provided with a plurality of first holes. The second speed change assembly comprises a second driving wheel and a second driven wheel, the second driving wheel is arranged on the rotating shaft and engaged with the second driven wheel, and the second driven wheel is provided with a plurality of second holes. The switching assembly comprises a driving part, a connecting module and an output shaft, the connecting module, the first driven wheel and the second driven wheel are all arranged on the output shaft, the connecting module comprises a plurality of plug connectors, and the driving part is configured to drive the plug connectors to move in the axial direction of the output shaft so that the plug connectors can be inserted into the first holes or the second holes. The plug connector is driven by the driving piece to be switched between the first hole and the second hole, so that the output shaft is connected with the first speed change assembly or the second speed change assembly in a switchable mode, the rotating speed of the output shaft is changed, and different torques can be output.

Description

Technical Field

[0001] This application belongs to the field of transmission technology, and specifically relates to a transmission mechanism. Background Technology

[0002] Transmission mechanisms are commonly used in new energy vehicles to change the gear ratio and adjust the speed and torque transmitted from the motor to the wheels.

[0003] In related technologies, the transmission mechanism is a reducer with a fixed speed ratio, which cannot be changed. When the transmission needs to output a higher speed, the power of the motor needs to be increased, resulting in faster energy consumption. Utility Model Content

[0004] In view of the above, it is necessary to provide a transmission mechanism with a variable speed ratio.

[0005] Embodiments of this application provide a transmission mechanism, including a rotating shaft, a first transmission assembly, a second transmission assembly, and a switching assembly. The rotating shaft is connected to a power source to rotate under the drive of the power source. The first transmission assembly is connected to the rotating shaft and includes a first driving wheel and a first driven wheel. The first driving wheel is disposed on the rotating shaft and meshes with the first driven wheel. The first driven wheel has a plurality of first holes evenly distributed around the center of the first driven wheel along the axial direction of the rotating shaft. The second transmission assembly is connected to the rotating shaft and includes a second driving wheel and a second driven wheel. The second driving wheel is disposed on the rotating shaft and meshes with the second driven wheel. The second driven wheel has a plurality of second holes evenly distributed around the center of the second driven wheel along the axial direction of the rotating shaft. The switching assembly includes a drive unit, a connecting module, and an output shaft. The drive unit is connected to the connecting module, which is located on the output shaft. The first driven wheel and the second driven wheel are rotatably located on the output shaft. The connecting module includes multiple connectors. The drive unit is configured to drive the connectors to move axially along the output shaft so that the connectors are inserted into the first hole or the second hole, thereby causing the output shaft to rotate with the first driven wheel or the second driven wheel.

[0006] In the aforementioned transmission mechanism, a power source drives a rotating shaft to generate torque, activating the first and second transmission components. A drive unit drives a connecting module to move axially, allowing a connector to insert into either the first or second hole. When the connector is inserted into the first hole, the output shaft rotates with the first driven wheel. The torque transmitted by the output shaft is the torque after being shifted by the first transmission component, and the speed ratio between the output shaft and the rotating shaft is equal to the speed ratio between the first driven wheel and the first driving wheel. When the connector is inserted into the second hole, the output shaft rotates with the second driven wheel. The torque transmitted by the output shaft is the torque after being shifted by the second transmission component, and the speed ratio between the output shaft and the rotating shaft is equal to the speed ratio between the second driven wheel and the second driving wheel. Therefore, by driving the connector to switch between the first and second holes, the output shaft can be switched between the first and second transmission components, meaning the speed ratio between the output shaft and the rotating shaft can vary. Thus, with the same kinetic energy provided by the power source, the output shaft's speed changes, allowing for the output of different torque values.

[0007] In some embodiments, the connecting module includes a linkage member located between the first driven wheel and the second driven wheel and disposed on the outside of the output shaft. A plug-in is inserted through the linkage member. When the driving member drives the linkage member to move toward the first driven wheel, the plug-in moves toward the first driven wheel under the drive of the linkage member and is inserted into the first hole.

[0008] In some embodiments, the output shaft is fixedly sleeved with a support body, the plug-in is inserted through the support body and moves axially relative to the support body, and the linkage is disposed on the outer periphery of the support body; the plug-in is provided with two retaining rings spaced apart axially, and the linkage is slidably disposed between the two retaining rings; the connecting module further includes a first elastic member, the first elastic member is sleeved on the plug-in and located between the two retaining rings, the first elastic member abuts against the linkage and a retaining ring near the first driven wheel, and when the linkage moves toward the first driven wheel, the first elastic member elastically pushes the plug-in until the plug-in is inserted into the first hole.

[0009] In some embodiments, the connection module further includes a second elastic element that connects the support body and the linkage element, and the second elastic element elastically deforms when the linkage element moves toward the first driven wheel.

[0010] In some embodiments, the connection module includes a balance frame that connects the drive member and the linkage member; the balance frame includes a frame body and a plurality of extension rods connected to the frame body, the plurality of extension rods are located on the outside of the linkage member, each extension rod includes a stop surface, the stop surface is disposed facing the first driven wheel, when the drive member drives the balance frame to move toward the first driven wheel, the stop surface drives the linkage member to move toward the first driven wheel.

[0011] In some embodiments, the balance frame further includes a plurality of balls, each ball being disposed on a corresponding stop surface, the plurality of balls abutting against the linkage member and driving the linkage member to move toward the first driven wheel.

[0012] In some embodiments, the balance frame further includes a limiting part, which has multiple through slots. The extension direction of the multiple through slots is parallel to the axial direction, and each extension rod passes through the corresponding through slot and can move in the corresponding through slot.

[0013] In some embodiments, the support body includes multiple limiting channels that are evenly distributed around the center of the output shaft, and each connector is accommodated in a corresponding limiting channel.

[0014] In some embodiments, each limiting channel includes two limiting holes, which are spaced apart axially, and the linkage is connected to the portion of the connector located between the two limiting holes.

[0015] In some embodiments, the inner circumference of the support body is provided with a plurality of protrusions, and the outer side of the output shaft is provided with a plurality of grooves, each protrusion being inserted into the corresponding groove so that the output shaft rotates with the support body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the transmission mechanism in one embodiment of this application.

[0017] Figure 2 yes Figure 1 A schematic diagram of the transmission mechanism from another perspective.

[0018] Figure 3 yes Figure 1 A schematic diagram of the switching components of the transmission mechanism.

[0019] Figure 4 yes Figure 3 Exploded view of the switching components of the transmission mechanism.

[0020] Figure 5 yes Figure 1 A schematic diagram of the switching assembly when the connector of the transmission mechanism is inserted into the first hole.

[0021] Figure 6 yes Figure 1 A schematic diagram of the switching assembly when the connector of the transmission mechanism is inserted into the second hole.

[0022] Figure 7 yes Figure 1 A schematic diagram of the first and second elastic elements when the connector of the transmission mechanism is inserted into the first hole.

[0023] Figure 8 yes Figure 1 A schematic diagram of the first and second elastic elements when the connector of the transmission mechanism is inserted into the second hole.

[0024] Explanation of main component symbols

[0025] 100. Gearbox mechanism; 10. Rotating shaft; 20. First gearbox assembly; 21. First drive wheel; 22. First driven wheel; 221. First hole; 30. Second gearbox assembly; 31. Second drive wheel; 32. Second driven wheel; 321. Second hole; 40. Switching assembly; 41. Connecting module; 411. Connector; 4111. Retaining ring; 412. Linkage component; 413. Support body; 4131. Limiting channel; 4131 a. Limiting hole; 4132. Protrusion; 414. First elastic element; 415. Second elastic element; 416. Balance frame; 4161. Frame body; 4162. Extension rod; 4162a. Stop surface; 4163. Ball bearing; 4164. Limiting part; 4164a. Through groove; 42. Output shaft; 421. Groove; 422. Raised ring; 423. Bearing; 424. Transmission gear; 43. Drive component; 200. Power source; X. Axial direction.

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0029] In the description of the embodiments of this application, the technical terms "first", "second", etc. are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0031] The embodiments of this application will be further described below with reference to the accompanying drawings. Unless otherwise specified, the various embodiments in this application can be combined with each other.

[0032] Please see Figure 1 and Figure 2Embodiments of this application provide a transmission mechanism 100, including a rotating shaft 10, a first transmission assembly 20, a second transmission assembly 30, and a switching assembly 40 (see...). Figure 3 One end of the rotating shaft 10 is connected to a power source 200, which is configured to drive the rotating shaft 10 to rotate. A first transmission assembly 20 and a second transmission assembly 30 are coaxially disposed on the rotating shaft 10 at a distance from each other along its extension direction, thereby enabling the power source 200 to drive the first transmission assembly 20 and the second transmission assembly 30 to rotate simultaneously via the rotating shaft 10. (See also...) Figures 1 to 3 The switching component 40 is configured to connect to a controlled component (not shown), and the switching component 40 can switchably connect to either the first transmission component 20 or the second transmission component 30, thereby enabling either the first transmission component 20 or the second transmission component 30 to output torque to the controlled component.

[0033] Please see Figure 1 and Figure 2 Both the first transmission assembly 20 and the second transmission assembly 30 are gear transmission modules. The transmission ratio of the first transmission assembly 20 is smaller than that of the second transmission assembly 30. With the power source 200's rotational speed constant, a higher transmission ratio results in greater output torque but lower output speed. When the controlled system requires greater torque and lower speed, the switching assembly 40 connects to the second transmission assembly 30 (see...). Figure 6 When the controlled component requires lower torque and higher speed, the switching component 40 connects to the first transmission component 20 (see...). Figure 5 ).

[0034] Therefore, the switching component 40 switches between the first transmission component 20 and the second transmission component 30, enabling the controlled device to connect to gear transmission modules with different transmission ratios. This changes the speed of the controlled device without changing the speed of the power source 200, which helps to reduce energy consumption.

[0035] In some embodiments, the controlled component is a car wheel. The power source 200 is an electric motor.

[0036] Please see Figure 1 and Figure 2 In some embodiments, the first transmission assembly 20 includes a first driving wheel 21 and a first driven wheel 22. The first driving wheel 21 is fixedly mounted on the rotating shaft 10 so as to rotate synchronously with the rotating shaft 10. The first driving wheel 21 engages with the first driven wheel 22 to drive the first driven wheel 22 to rotate. The first driven wheel 22 is provided with a plurality of first holes 221 along the axial direction of the rotating shaft 10 for the switching assembly 40 to be inserted.

[0037] The second transmission assembly 30 includes a second driving wheel 31 and a second driven wheel 32. The second driving wheel 31 is fixedly mounted on the rotating shaft 10 and rotates synchronously with the rotating shaft 10. The second driving wheel 31 engages with the second driven wheel 32 to drive the second driven wheel 32 to rotate. The second driven wheel 32 has a plurality of second holes 321 along the axial direction of the rotating shaft 10 for the switching assembly 40 to insert into. Among them, the plurality of first holes 221 are evenly distributed around the center of the first driven wheel 22, and the plurality of second holes 321 are evenly distributed around the center of the second driven wheel 32.

[0038] The first driving gear 21 and the first driven gear 22 are meshing gears with different numbers of teeth. The second driving gear 31 and the second driven gear 32 are meshing gears with different numbers of teeth. The transmission ratio between the first driving gear 21 and the first driven gear 22 is less than the transmission ratio between the second driving gear 31 and the second driven gear 32.

[0039] Power source 200 drives shaft 10 to rotate, causing first drive wheel 21 and second drive wheel 31 to rotate simultaneously. First driven wheel 22 rotates with first drive wheel 21, and second driven wheel 32 rotates with second drive wheel 31. Switching component 40, when inserted into first hole 221, causes the controlled component to rotate with first driven wheel 22; when inserted into second hole 321, it causes the controlled component to rotate with first driven wheel 22. Therefore, one power source 200 can drive first transmission component 20 and second transmission component 30 to work simultaneously. Switching component 40, by selectively inserting into first hole 221 or second hole 321, changes the rotational speed of the controlled component.

[0040] Please see Figure 3 and Figure 4 In some embodiments, the switching component 40 includes a drive unit 43, a connecting module 41, and an output shaft 42. The drive unit 43 is connected to the connecting module 41, which is disposed on the output shaft 42, which is configured to connect to a controlled object. A first driven wheel 22 and a second driven wheel 32 are rotatably disposed on the output shaft 42. The drive unit 43 drives the connecting module 41, causing the connecting module 41 to selectively insert into either the first hole 221 or the second hole 321, thereby changing the rotational speed of the controlled object driven by the output shaft 42.

[0041] In some embodiments, the extending direction of the rotating shaft 10 is parallel to the extending direction of the output shaft 42, and the extending direction of the rotating shaft 10 is parallel to the axial direction X of the rotating shaft 10, that is, the axial direction X of the output shaft 42 is parallel to the axial direction of the rotating shaft 10. For ease of description, it will be referred to as axial direction X below.

[0042] Please see Figure 4In some embodiments, the connection module 41 includes multiple connectors 411, linkages 412, a support body 413, and a balance frame 416. The multiple connectors 411 are all inserted through the support body 413 and are evenly distributed around the center of the output shaft 42, allowing the support body 413 to position and support the multiple connectors 411. The multiple connectors 411 are also connected to the linkages 412 to move with the linkages 412. The support body 413 is located between the first driven wheel 22 and the second driven wheel 32, and is fixedly sleeved on the output shaft 42. The linkages 412 are sleeved on the outer periphery of the support body 413, i.e., the linkages 412 are also located between the first driven wheel 22 and the second driven wheel 32. The balance frame 416 connects the drive member 43 and the linkage member 412 so that the balance frame 416 can drive the linkage member 412 to move along the axial direction X under the drive of the drive member 43. The movement of the linkage member 412 along the axial direction X can cause multiple plug-in members 411 to move simultaneously along the axial direction X, so that the multiple plug-in members 411 can be selectively inserted into the first hole 221 or the second hole 321.

[0043] Therefore, driven by the drive member 43, the linkage member 412 drives multiple plug members 411 to move simultaneously along the axial direction X, so that the multiple plug members 411 switch between the first hole 221 and the second hole 321 at the same time, so that the output shaft 42 can be switched to the first speed change component 20 or the second speed change component 30, that is, change the speed ratio between the output shaft 42 and the rotating shaft 10. In this way, when the power source 200 provides the same kinetic energy, the speed of the output shaft 42 can be changed, and different amounts of torque can be output to the controlled device.

[0044] In some embodiments, a plurality of plug-in members 411 may be fixedly disposed on the linkage member 412 so as to move together with the linkage member 412 along the axial direction X.

[0045] Please see Figure 4 In some embodiments, multiple connectors 411 may also be inserted through the linkage 412, so that the connectors 411 can move relative to the linkage 412.

[0046] The connecting module 41 also includes a first elastic element 414, which is sleeved on the plug-in member 411. The two ends of the first elastic element 414 are respectively connected to the plug-in member 411 and the linkage member 412.

[0047] Please see Figure 5 When the linkage 412 moves toward the first driven wheel 22, the first elastic member 414 elastically pushes against the connector 411, causing the connector 411 to move relative to the support body 413 and the linkage 412 until the connector 411 is inserted into the first hole 221. Please refer to [link / reference]. Figure 6When the linkage 412 moves toward the second driven wheel 32, the linkage 412 drives the plug 411 to move relative to the support body 413 until the plug 411 is inserted into the second hole 321.

[0048] In some embodiments, the plurality of connectors 411 are all cylindrical, and the plurality of connectors 411 extend along the axial direction X. The plurality of connectors 411 can move simultaneously along the axial direction X under the drive of the drive member 43, so that the plurality of connectors 411 are simultaneously inserted into the first hole 211 or the second hole 321.

[0049] Please see Figure 7 and Figure 8 In some embodiments, the connector 411 is provided with two retaining rings 4111 spaced apart and fixed along the axial direction X, and the first elastic member 414 is located between the two retaining rings 4111. The linkage member 412 is slidably disposed between the two retaining rings 4111, that is, the two retaining rings 4111 can position the connection position of the first elastic member 414 and the linkage member 412. One retaining ring 4111 near the first driven wheel 22 is used to abut against the first elastic member 414, and one retaining ring 4111 near the second driven wheel 32 is used to abut against the linkage member 412, so that the two ends of the first elastic member 414 abut against the retaining ring 4111 and the linkage member 412 respectively.

[0050] Please see Figure 5 and Figure 7 When the linkage 412 moves toward the first driven wheel 22, the first elastic member 414 elastically pushes against a retaining ring 4111 close to the first driven wheel 22, causing the plug 411 to move toward the first driven wheel 22 relative to the support body 413 and the linkage 412 until the plug 411 is inserted into the first hole 221.

[0051] Please refer to Figure 6 and Figure 8 When the linkage 412 moves toward the second driven wheel 32, the linkage 412 pushes against a retaining ring 4111 close to the second driven wheel 32, causing the plug 411 to move toward the second driven wheel 32 relative to the supporting body 413 until the plug 411 is inserted into the second hole 321.

[0052] Please see Figure 5 When the connector 411 is inserted into the first hole 221, the output shaft 42 rotates with the first driven wheel 22. At this time, the torque transmitted by the output shaft 42 is the torque after being changed by the first speed change assembly 20. The speed ratio of the output shaft 42 to the rotating shaft 10 is equal to the speed ratio of the first driven wheel 22 to the first driving wheel 21.

[0053] Please see Figure 6When the connector 411 is inserted into the second hole 321, the output shaft 42 rotates with the second driven wheel 32. At this time, the torque transmitted by the output shaft 42 is the torque after being changed by the second speed change assembly 30. The speed ratio of the output shaft 42 to the rotating shaft 10 is equal to the speed ratio of the second driven wheel 32 to the second driving wheel 31.

[0054] Please see Figure 3 and Figure 4 In some embodiments, the connecting module 41 further includes a second elastic element 415, with its two ends connected to the support body 413 and the linkage element 412, respectively. When the driving element 43 drives the balance frame 416 to move toward the first driven wheel 22, the balance frame 416 drives the linkage element 412 to move toward the first driven wheel 22, and the second elastic element 415 elastically extends. When the driving element 43 drives the balance frame 416 to move toward the second driven wheel 32, the second elastic element 415 rebounds, causing the linkage element 412 to move toward the second driven wheel 32.

[0055] Therefore, the second elastic element 415 enables the linkage element 412 to move along the axial direction X toward the first driven wheel 22 or the second driven wheel 32 under the drive of the driving element 43.

[0056] In some embodiments, both the first elastic element 414 and the second elastic element 415 are springs.

[0057] Please see Figure 4 In some embodiments, the inner circumference of the support body 413 is provided with a plurality of protrusions 4132. The outer side of the output shaft 42 is provided with a plurality of grooves 421. When the output shaft 42 is sleeved on the support body 413, each protrusion 4132 is inserted into the corresponding groove 421 so that the output shaft 42 can rotate with the support body 413.

[0058] In some embodiments, a plurality of protrusions 4132 are continuously distributed on the periphery of the output shaft 42, and a plurality of grooves 421 are continuously distributed on the inner periphery of the support body 413, so that the support body 413 can be stably connected to the output shaft 42.

[0059] In some embodiments, the support body 413 includes a plurality of limiting channels 4131, which are evenly distributed around the center of the output shaft 42. The limiting channels 4131 extend along the axial direction X, such that each connector 411 is accommodated in the corresponding limiting channel 4131.

[0060] In some embodiments, each limiting channel 4131 includes two limiting holes 4131a. The two limiting holes 4131a are spaced apart along the axial direction X. A linkage 412 is connected to the portion of the connector 411 located between the two limiting holes 4131a, so as to facilitate the linkage 412 connecting to the connector 411 and driving the connector 411 to move along the axial direction X.

[0061] When the connector 411 is not inserted into the first hole 221 and the second hole 321, both ends of the connector 411 along the axial direction X are located in the limiting channel 4131; please refer to Figure 5 and Figure 7 When the connector 411 is inserted into the first hole 221, the end of the connector 411 near the first driven wheel 22 protrudes from the support body 413; please refer to Figure 6 and Figure 8 When the connector 411 is inserted into the second hole 321, the end of the connector 411 near the second driven wheel 32 is exposed in the support body 413.

[0062] Understandably, when the connector 411 inserted into the first hole 221 moves toward the second driven wheel 32, since the first driven wheel 22 and the second driven wheel 32 rotate at different speeds, the connector 411 first moves toward the second driven wheel 32 until it abuts against the side wall of the second driven wheel 32. When the second hole 321 rotates to correspond with the connector 411, the connector 411 continues to move toward the second hole 321 until it is inserted into the second hole 321.

[0063] Therefore, by using the elastic force of the first elastic member 414 and the second elastic member 415 to make the plug 411 move elastically along the axial direction X, it is possible to prevent the plug 411 from rigidly impacting the first driven wheel 22 and the second driven wheel 32, thus affecting the service life of the switching assembly 40.

[0064] Please see Figure 3 and Figure 4 In some embodiments, the balance frame 416 includes a frame body 4161 and a plurality of extension rods 4162. The plurality of extension rods 4162 are all fixedly connected to the frame body 4161. The plurality of extension rods 4162 are located on the outer side of the linkage member 412. Each extension rod 4162 includes a stop surface 4162a, which faces the first driven wheel 22. When the driving member 43 drives the balance frame 416 to move towards the first driven wheel 22, the extension rod 4162 drives the linkage member 412 to move towards the first driven wheel 22 via the stop surface 4162a.

[0065] Multiple extension rods 4162 drive the linkage 412 to move, and the multiple extension rods 4162 are evenly distributed on the outer periphery of the linkage 412, which can prevent the linkage 412 from tilting during the movement with the balance frame 416.

[0066] In some embodiments, the balance frame 416 further includes a plurality of balls 4163. Each ball 4163 is disposed on a corresponding stop surface 4162a. The plurality of balls 4163 abut against the linkage member 412 and drive the linkage member 412 to move toward the first driven wheel 22.

[0067] The ball bearing 4163 contacts the linkage 412, allowing the linkage 412 to rotate relative to the balance frame 416. When the linkage 412 rotates relative to the balance frame 416 along with the support body 413, the connector 411, and the output shaft 42, the coefficient of friction between the ball bearing 4163 and the linkage 412 is small, allowing the linkage 412 to rotate smoothly and steadily relative to the balance frame 416.

[0068] In some embodiments, the balance frame 416 further includes a limiting portion 4164. The limiting portion 4164 is fixedly disposed on the outer frame of the controlled device to fix the position of the frame body 4161 and the plurality of extension rods 4162. The limiting portion 4164 is provided with a plurality of through slots 4164a, each extension rod 4162 passing through a corresponding through slot 4164a and movable within the corresponding through slot 4164a, so that the through slot 4164a can support and position the extension rod 4162. The extending direction of the plurality of through slots 4164a is parallel to the axial direction X to guide the extension rod 4162 to move along the axial direction X.

[0069] When the drive component 43 drives the balance frame 416 to move along the axial direction X, the through groove 4164a guides the extension rod 4162 to move along the axial direction X to prevent the extension rod 4162 from bending or shaking, so that the linkage component 412 moves more smoothly with the balance frame 416.

[0070] In some embodiments, an output shaft 42 is fixedly connected to a transmission gear 424, which is used to connect to the controlled object to transmit torque to the controlled object.

[0071] In some embodiments, a plurality of convex rings 422 are fixedly provided on the output shaft 42 along the axial direction X to fix the positions of two bearings 423 and a support body 413. One bearing 423 is used to connect the first driven wheel 22, and the other bearing 423 is used to connect the second driven wheel 32. The support body 413 is located between the two bearings 423, such that both ends of the support body 413 contact the sidewalls of the first driven wheel 22 and the second driven wheel 32, thereby making the structure of the transmission mechanism 100 compact.

[0072] In some embodiments, the drive unit 43 is a linear drive module. The drive unit 43 includes a cylinder or a hydraulic cylinder. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0073] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A transmission mechanism, characterized in that, include: A rotating shaft connected to a power source to rotate under the drive of the power source; The first transmission assembly is connected to the rotating shaft and includes a first driving wheel and a first driven wheel. The first driving wheel is disposed on the rotating shaft and meshes with the first driven wheel. The first driven wheel has a plurality of first holes evenly distributed around the center of the first driven wheel along the axial direction of the rotating shaft. The second transmission assembly is connected to the rotating shaft and includes a second driving wheel and a second driven wheel. The second driving wheel is disposed on the rotating shaft and meshes with the second driven wheel. The second driven wheel has a plurality of second holes evenly distributed around the center of the second driven wheel along the axial direction of the rotating shaft. The switching component includes a drive unit, a connecting module, and an output shaft. The drive unit is connected to the connecting module, which is located on the output shaft. The first driven wheel and the second driven wheel are rotatably located on the output shaft. The connecting module includes a plurality of plug-in members. The drive unit is configured to drive the plug-in members to move axially along the output shaft so that the plug-in members are inserted into the first hole or the second hole, thereby causing the output shaft to rotate with the first driven wheel or the second driven wheel.

2. The transmission mechanism as described in claim 1, characterized in that, The connection module includes a linkage component located between the first driven wheel and the second driven wheel, and disposed on the outside of the output shaft. The plug-in component passes through the linkage component. When the driving component drives the linkage component to move toward the first driven wheel, the plug-in component moves toward the first driven wheel under the drive of the linkage component and inserts into the first hole.

3. The transmission mechanism as described in claim 2, characterized in that, The output shaft is fixedly sleeved with a support body, the plug-in is inserted through the support body and moves relative to the support body along the axial direction, and the linkage is located on the outer periphery of the support body; The connector is provided with two retaining rings spaced apart along the axial direction, and the linkage is slidably disposed between the two retaining rings; the connection module further includes a first elastic element, which is sleeved on the connector and located between the two retaining rings. The first elastic element abuts against the linkage and one of the retaining rings near the first driven wheel. When the linkage moves toward the first driven wheel, the first elastic element elastically pushes the connector until the connector is inserted into the first hole.

4. The transmission mechanism as described in claim 3, characterized in that, The connection module further includes a second elastic element, which connects the support body and the linkage element. The second elastic element elastically deforms when the linkage element moves toward the first driven wheel.

5. The transmission mechanism as described in claim 2, characterized in that, The connection module includes a balance frame that connects the drive component and the linkage component; The balancing frame includes a frame body and a plurality of extension rods connected to the frame body. The plurality of extension rods are located on the outside of the linkage member. Each extension rod includes a stop surface, which is disposed facing the first driven wheel. When the driving member drives the balancing frame to move toward the first driven wheel, the stop surface drives the linkage member to move toward the first driven wheel.

6. The transmission mechanism as described in claim 5, characterized in that, The balance frame also includes multiple balls, each ball being disposed on a corresponding stop surface. The multiple balls abut against the linkage member and drive the linkage member to move toward the first driven wheel.

7. The transmission mechanism as described in claim 5, characterized in that, The balance frame also includes a limiting part, which has multiple through slots. The extension direction of the multiple through slots is parallel to the axial direction. Each extension rod passes through the corresponding through slot and can move in the corresponding through slot.

8. The transmission mechanism as described in claim 3, characterized in that, The support body includes multiple limiting channels, which are evenly distributed around the center of the output shaft, and each connector is accommodated in a corresponding limiting channel.

9. The transmission mechanism as described in claim 8, characterized in that, Each of the limiting channels includes two limiting holes, which are spaced apart along the axial direction, and the linkage is connected to the portion of the connector located between the two limiting holes.

10. The transmission mechanism as described in claim 8, characterized in that, The inner circumference of the support body is provided with multiple protrusions, and the outer side of the output shaft is provided with multiple grooves. Each protrusion is inserted into the corresponding groove so that the output shaft rotates with the support body.

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