Transmission device with clutch and differential functions

Abstract

The utility model relates to the technical field of transmission equipment, in particular to a transmission device with clutch and differential functions, which comprises a box body part, the box body part further comprises clutch units used in output shafts or output shaft sections A and B. The clutch units are used for driving the output shafts or the output shaft sections A and B to rotate when the output shafts or the output shaft sections A and B are in the inserted state of the box body part and the box body part is in the closed state. The clutch unit drives the output shaft or the output shaft section A and the output shaft section B to synchronously rotate in the box body part in the same direction with the output shaft or the output shaft section A and the output shaft section B as the axis, and the clutch unit can be activated when the box body part is in the closed state and can be activated when the box body part is in the closed state. The clutch unit can be activated so that the clutch unit can be freely switched between the state that the clutch unit and the output shaft or the output shaft sections A and B synchronously rotate in the same direction and the state that the output shaft or the output shaft sections A and B freely rotate in the same direction. According to the utility model, the switching of working modes can be automatically completed, the turning differential function can be realized, the structure is simple and compact, and the operation is smooth in each working mode.

Description

Technical Field

[0001] The present invention relates to the technical field of transmission equipment, and in particular to a transmission device with clutch and differential functions. Background Art

[0002] A lawn mower, also known as a grass cutter, lawn trimmer, etc., includes a mowing tool, an engine, a traveling mechanism, a handle, and a control part, and can be divided into a push-type lawn mower and a self-propelled lawn mower. The traveling mechanism of the lawn mower includes a wheel axle, and rollers are installed on the wheel axle. The push-type lawn mower is in a manual pushing mode, and the lawn mower is manually pushed to make the rollers rotate to achieve traveling; the self-propelled lawn mower is in an automatic traveling mode, and the lawn mower automatically travels, and the rollers are driven by a motor or an engine to rotate to achieve traveling. The component that can realize the automatic traveling of the lawn mower on the lawn mower is also called the self-propeller of the lawn mower.

[0003] When the lawn mower is working, it needs to travel automatically in some places and needs to be manually pushed in some places. Therefore, an automatic clutch is required. The automatic clutch can adaptively engage and disengage with the change of the working state of the motor, and there is no need to manually operate the clutch, so that the self-propeller of the lawn mower can automatically complete the switching of the working mode, and the working mode includes an automatic traveling mode and a manual pushing mode.

[0004] Moreover, when the lawn mower is traveling automatically, it needs to turn, and there is a speed difference between the inner and outer rotating shafts of the lawn mower, so a differential needs to be installed, and flexible turning also needs to be realized during the automatic traveling process.

[0005] If the self-propeller on the lawn mower is to achieve flexible turning and automatically complete the switching of the working mode, then a differential and an automatic clutch need to be set on the self-propeller at the same time. How to integrate the differential and the automatic clutch on the self-propeller so that the self-propeller has the functions of flexible turning and automatically completing the switching of the working mode, and at the same time make the structure of the self-propeller compact and can run stably and smoothly in each working mode is an urgent problem to be solved. Summary of the Invention

[0006] The present invention aims to solve the above defects and provides a transmission device with clutch and differential functions.

[0007] In order to overcome the deficiencies existing in the background art, the technical solution adopted by the present invention to solve its technical problems is as follows: A transmission device with clutch and differential functions, including a housing part, the housing part includes at least two housing sub-parts A and B assembled together in the closed state of the housing part, at least one insertion hole A and B for entering the interior of the housing part, and an output shaft. The output shaft is inserted into the housing part through the insertion holes A and B opened on the housing part, and the output shaft is rotatably arranged within the housing part, and the output shaft is configured to at least partially extend outside the housing part in the inserted state within the housing part and in the closed state of the housing part. The output shaft is composed of a single piece or at least two output shaft segments A and B. The housing part further includes a clutch unit for the output shaft or the output shaft segments A and B. The clutch unit is used to drive the output shaft or the output shaft segments A and B to rotate synchronously in one direction around the output shaft or the output shaft segments A and B as the axis within the housing part when the output shaft or the output shaft segments A and B are in the inserted state within the housing part and in the closed state of the housing part. The clutch unit can be activated when the housing part is in the closed state. In the closed state, the clutch unit can be activated to freely switch between the state of rotating synchronously with the output shaft or the output shaft segments A and B in one direction and the state of the output shaft or the output shaft segments A and B rotating freely;

[0008] Wherein the clutch unit is configured to, in the closed state of the housing part, according to the position occupied by the output shaft or the output shaft segments A and B within the housing part, perform a simple angular displacement in the opposite direction of driving the output shaft or the output shaft segments A and B to rotate synchronously in one direction around the output shaft or the output shaft segments A and B as the axis through the output shaft or the output shaft segments A and B, so as to switch the state of driving the output shaft or the output shaft segments A and B to rotate synchronously in one direction by the clutch unit to the state of the output shaft or the output shaft segments A and B rotating freely;

[0009] After the clutch unit performs a simple angular displacement in the direction of driving the output shaft or the output shaft segments A and B to rotate synchronously, the state of the output shaft or the output shaft segments A and B rotating freely is switched to the state of the clutch unit driving the output shaft or the output shaft segments A and B to rotate synchronously in one direction.

[0010] A further improvement includes using at least one such clutch unit on the output shaft.

[0011] Further improvements include that the clutch unit includes a rotary drive part for transmitting power, a rotary driven part rotatably connected coaxially with the rotary drive part, and a limiting unit for non-locking limiting the rotation of the rotary driven part. The rotary drive part, the rotary driven part, and the limiting unit are configured to be axially penetrated by the output shaft or the output shaft segments A and B, and the rotary drive part and the rotary driven part are rotatably arranged on the output shaft or the output shaft segments A and B. At least one connecting shaft parallel to the output shaft or the output shaft segments A and B is connected to the rotary driven part. The connecting shaft is rotatably connected to the locking part through an arc-shaped hole A correspondingly opened on the rotary drive part so that the rotary drive part drives the locking part to perform a simple angular displacement. After the locking part performs a simple displacement, the locking part is combined with a rotary part connected to the output shaft or the output shaft segments A and B, so that the output shaft or the output shaft segments A and B rotate synchronously with the rotary drive part. The output shaft or the output shaft segments A and B perform a simple angular displacement in the opposite direction of the synchronous rotation with the rotary drive part in one direction so that the rotary part is disengaged from the locking part, and further the output shaft or the output shaft segments A and B rotate freely, wherein the box body part restricts the limiting unit from rotating around the output shaft or the output shaft segments A and B as the axis.

[0012] Further improvements include that the limiting unit is preferably a two-claw elastic piece or a multi-claw elastic piece.

[0013] Further improvements include that the rotary drive part includes a toothed ring part B with one end being a closed end and having both internal teeth and external teeth, and a convex part C. The convex part C is coaxially connected to the closed end of the toothed ring part B, and the arc-shaped hole A is located on the closed end surface of the toothed ring part B. The rotary driven part is rotatably arranged coaxially on the convex part C. The toothed ring part B is used to accommodate the rotary part and the locking part, and the internal teeth of the toothed ring part B are used to drive the locking part to perform a simple angular displacement, and further to disengage and combine the locking part with the rotary part.

[0014] Further improvements include that the locking part includes a cylinder A rotatably connected to the connecting shaft. A toothed area B meshing with the internal teeth of the toothed ring part B and a locking tooth C for combining or disengaging with the rotary part are provided on the cylinder A. When the toothed ring part B rotates, it will drive the locking part to perform a simple angular displacement, so that the locking tooth C is combined with or disengaged from the rotary part.

[0015] Further improvements include that the rotary part includes a connecting column A and a locking protrusion B connected to the output shaft or the output shaft segments A and B. At least one locking protrusion B is circumferentially arranged on the connecting column A. The locking protrusion B contacts the locking tooth C to limit the connecting column A, so that the output shaft or the output shaft segments A and B rotate synchronously with the rotary drive part.

[0016] Further improvements include that the rotating parts on the output shaft sections A and B are rotatably connected by a docking pin, and the output shaft sections A and B are on the same straight line.

[0017] Further improvements include that the box body part further includes a motor arranged in the box body part and supported by the box body part and a transmission unit located in the box body part. The output end of the motor is connected to the clutch unit through a transmission mechanism to provide power for the clutch unit on the output shaft or the output shaft sections A and B.

[0018] Further improvements include that the transmission unit includes a driving rotating gear connected to the output end of the motor, a driven transmission part two, and at least one driven transmission part one. The driven transmission part one and the driven transmission part two are rotatably arranged in the box body part, and the driven transmission part one and the driven transmission part two are meshed. The driving rotating gear is meshed with the driven transmission part two, and the driven transmission part one is meshed with the clutch unit on the output shaft or the output shaft sections A and B.

[0019] Further improvements include that the driven transmission part two includes an internal gear ring A with a closed structure at one end and a connecting gear two B coaxially connected to the internal gear ring A. The driven transmission part one includes a tooth-shaped column A and a connecting gear one B coaxially connected to the tooth-shaped column A. The internal teeth of the internal gear ring A are meshed with the driving rotating gear, the connecting gear two B is meshed with the connecting gear one B, and the tooth-shaped column A is meshed with the clutch unit.

[0020] The beneficial effects of the present invention are as follows: This design uses a clutch unit connected to the output shaft to achieve the functions of differential and clutch, and completes the switching of working modes under different working states of the motor, and can turn flexibly under the working state. This design has a simple and compact structure and runs smoothly in each working mode; a clutch unit with a special structure integrates the clutch and the differential, and realizes the clutch and the differential through the disengagement or combination of the locking part and the rotating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 is the axonometric view of the present invention;

[0023] Figure 2 is the front sectional view of the present invention;

[0024] Figure 3 is the axonometric view of the driven transmission part one in the present invention;

[0025] Figure 4It is the axonometric view of the second driven transmission part in the present invention;

[0026] Figure 5 It is the exploded view of the present invention;

[0027] Figure 6 It is the axonometric view of the rotary drive part in the present invention;

[0028] Figure 7 It is the axonometric view of the locking part in the present invention;

[0029] Figure 8 It is the axonometric view of the rotating part in the present invention;

[0030] Figure 9 It is the assembled axonometric view of the clutch unit and the output shaft in the present invention;

[0031] Figure 10 It is the top view of the clutch unit and the output shaft in the present invention;

[0032] Figure 11 It is the sectional axonometric view of the present invention;

[0033] Figure 12 It is the front sectional view of the clutch unit in the present invention;

[0034] In the figure: 1 - housing part, 1A, 1B - housing sub - parts, 2 - output shaft, 2A, 2B - output shaft segments, 3 - clutch unit 3, 4 - first driven transmission part, 4A - toothed column, 4B - connecting gear one, 5 - second driven transmission part, 5A - internal gear ring, 5B - connecting gear two, 6 - active rotating gear, 7 - motor, 8 - limiting unit, 9 - rotary drive part, 9A - arc - shaped section hole, 9B - gear ring part, 9C - protruding part, 10 - locking part, 10A - column body, 10B - toothed area, 10C - locking teeth, 11 - docking pin, 12 - rotating part, 12A - connecting column, 12B - locking protrusion, 13 - connecting shaft, 14 - rotating driven part, 15A, 15B - insertion holes. Detailed implementation manners

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. For the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0036] According to Figure 1 , Figure 2 , Figure 11 and Figure 12As shown, a transmission device with clutch and differential functions includes a housing part 1. The housing part 1 includes at least two housing sub - parts 1A, 1B assembled together in the closed state of the housing part 1, at least one insertion hole 15A, 15B for entering the interior of the housing part 1, and an output shaft 2. The output shaft 2 is inserted into the housing part 1 through the insertion holes 15A, 15B opened on the housing part 1, and the output shaft 2 is rotatably arranged within the housing part 1. And the output shaft 2 is configured to extend at least partially outside the housing part 1 in the inserted state within the housing part 1 and in the closed state of the housing part 1. The output shaft 2 is composed of a single piece or at least two output shaft segments 2A, 2B. The housing part 1 further includes a clutch unit 3 for the output shaft 2 or the output shaft segments 2A, 2B. The clutch unit 3 is used to drive the output shaft 2 or the output shaft segments 2A, 2B to rotate synchronously in one direction around the output shaft 2 or the output shaft segments 2A, 2B as the axis within the housing part 1 when the output shaft 2 or the output shaft segments 2A, 2B are in the inserted state in the housing part 1 and in the closed state of the housing part 1. The clutch unit 3 can be activated in the closed state of the housing part 1. In the closed state, the clutch unit 3 can be activated to freely switch between the state of rotating synchronously with the output shaft 2 or the output shaft segments 2A, 2B in one direction and the state of the output shaft 2 or the output shaft segments 2A, 2B rotating freely;

[0037] Wherein the clutch unit 3 is configured to, in the closed state of the housing part 1, according to the position occupied by the output shaft 2 or the output shaft segments 2A, 2B within the housing part 1, perform a simple angular displacement in the opposite direction of driving the output shaft 2 or the output shaft segments 2A, 2B to rotate synchronously in one direction around the output shaft 2 or the output shaft segments 2A, 2B as the axis through the output shaft 2 or the output shaft segments 2A, 2B, so as to switch the state of driving the output shaft 2 or the output shaft segments 2A, 2B to rotate synchronously in one direction by the clutch unit 3 to the state of the output shaft 2 or the output shaft segments 2A, 2B rotating freely;

[0038] After the clutch unit 3 performs a simple angular displacement in the direction of driving the output shaft 2 or the output shaft segments 2A, 2B to rotate synchronously, the state of the output shaft 2 or the output shaft segments 2A, 2B rotating freely is switched to the state of the clutch unit 3 driving the output shaft 2 or the output shaft segments 2A, 2B to rotate synchronously in one direction.

[0039] In a further embodiment, at least one such clutch unit 3 is used on the output shaft 2, that is, one clutch unit 3 controls the output shaft 2.

[0040] According to Figure 2 , Figure 5 , Figure 11 and Figure 12 as shown, the clutch unit 3 includes a rotary drive part 9 for transmitting power, a rotary driven part 14 rotatably connected coaxially with the rotary drive part 9, and a limiting unit 8 for non-locking type limiting the rotation of the rotary driven part 14. The rotary drive part 9, the rotary driven part 14, and the limiting unit 8 are configured to be axially penetrated by the output shaft 2 or the output shaft segments 2A, 2B. The rotary drive part 9 and the rotary driven part 14 are rotatably arranged on the output shaft 2 or the output shaft segments 2A, 2B. At least one connecting shaft 13 parallel to the output shaft 2 or the output shaft segments 2A, 2B is connected to the rotary driven part 14. The connecting shaft 13 is rotatably connected to the locking part 10 through an arc-shaped hole 9A correspondingly opened on the rotary drive part 9 so that the rotary drive part 9 drives the locking part 10 to perform a simple angular displacement. After the locking part 10 performs a simple displacement, the locking part 10 is combined with a rotating part 12 connected to the output shaft 2 or the output shaft segments 2A, 2B, so that the output shaft 2 or the output shaft segments 2A, 2B rotate synchronously with the rotary drive part 9. The output shaft 2 or the output shaft segments 2A, 2B perform a simple angular displacement in the opposite direction of the synchronous rotation with the rotary drive part 9 in one direction, so that the rotating part 12 is disengaged from the locking part 10, and further the output shaft 2 or the output shaft segments 2A, 2B rotate freely. Wherein the housing part 1 restricts the limiting unit 8 from rotating with the output shaft 2 or the output shaft segments 2A, 2B as the axis.

[0041] By the limiting unit 8 non-locking type restricting the rotation of the rotary driven part 14, when the rotary drive part 9 rotates, due to the force exerted by the limiting unit 8 on the rotary driven part 14, the rotary driven part 14 is still in a stationary state. After that, the rotary drive part 9 drives the locking part 10 to perform a simple angular displacement, and then the locking part 10 is combined with the rotating part 12, so that the rotary drive part 9, the rotary driven part 14, and the output shaft 2 or the output shaft segments 2A, 2B rotate synchronously in one direction. Therefore, the limiting unit 8 is the key to whether the locking part 10 and the rotating part 12 can be combined and disengaged.

[0042] In order to non-locking type restrict the rotation of the rotary driven part 14 and smoothly combine and disengage the locking part 10 with the connecting shaft 13, the limiting unit 8 is preferably a two-claw elastic sheet or a multi-claw elastic sheet. Selecting this kind of elastic sheet has a certain elasticity. The elastic sheet with a multi-claw structure non-locking type clamps and restricts the rotation of the rotary driven part 14 under the action of the elastic force. The elastic clamping force of the elastic sheet is small. While clamping the rotary driven part 14, the rotary driven part 14 can still rotate, that is, the wear between the elastic sheet and the rotary driven part 14 is reduced.

[0043] According to Figure 6 、 Figure 9 and Figure 10 As shown, the rotation driving part 9 includes a ring gear part 9B with one end being a closed end and having both internal teeth and external teeth, and a convex part 9C. The convex part 9C is coaxially connected to the closed end of the ring gear part 9B, and the arc-shaped section hole 9A is located on the closed end face of the ring gear part 9B. The rotation driven part 14 is coaxially rotatably arranged on the convex part 9C. The inside of the ring gear part 9B is used to accommodate the rotation part 12 and the locking part 10. The internal teeth of the ring gear part 9B are used to drive the locking part 10 to perform a simple angular displacement, so that the locking part 10 is disengaged from and engaged with the rotation part 12. The external teeth of the ring gear part 9B are used to receive the power transmitted from the outside.

[0044] According to Figure 7 、 Figure 9 and Figure 10 As shown, the locking part 10 includes a cylinder 10A rotatably connected to the connecting shaft 13. The cylinder 10A is provided with a tooth-shaped area 10B meshing with the internal teeth of the ring gear part 9B and a locking tooth 10C for engaging or disengaging with the rotation part 12. When the ring gear part 9B rotates, it will drive the locking part 10 to perform a simple angular displacement, so that the locking tooth 10C is engaged with or disengaged from the rotation part 12, and is used to make the clutch unit 3 and the output shaft 2 or the output shaft segments 2A, 2B rotate synchronously in one direction.

[0045] According to Figure 8 、 Figure 9 and Figure 10 As shown, the rotation part 12 includes a connecting column 12A connected to the output shaft 2 or the output shaft segments 2A, 2B and a locking projection 12B. At least one locking projection 12B is circumferentially arranged on the connecting column 12A. The locking tooth 10C contacts the locking projection 12B to limit the connecting column 12A, so that the output shaft 2 or the output shaft segments 2A, 2B rotate synchronously with the rotation driving part 9.

[0046] According to Figure 2 and Figure 5 As shown, the rotation parts 12 on the output shaft segments 2A, 2B are rotatably connected by a docking pin 11, and the output shaft segments 2A, 2B are on the same straight line. Through this design, it is realized that the two side rollers of the self-propelled device can move forward synchronously when starting, can move forward and backward freely when stopping, and the self-propelled device can perform differential turning when starting.

[0047] According to Figure 2As shown, the box body part 1 further includes a motor 7 arranged inside the box body part 1 and supported by the box body part 1, and a transmission unit located inside the box body part 1. The output end of the motor 7 is connected to the clutch unit (3) through a transmission mechanism for providing power to the clutch unit 3 on the output shaft 2 or the output shaft segments 2A, 2B. The transmission mechanism plays a role in transmission.

[0048] According to Figure 2 , Figure 3 , Figure 4 , Figure 11 and Figure 12 , the transmission unit includes a driving rotating gear 6 connected to the output end of the motor 7, a driven transmission part two 5, and at least one driven transmission part one 4. The driven transmission part one 4 and the driven transmission part two 5 are rotatably arranged inside the box body part 1, and the driven transmission part one 4 and the driven transmission part two 5 are meshed for power transmission. The driving rotating gear 6 is meshed with the driven transmission part two 5 for providing power. The driven transmission part one 4 is meshed with the clutch unit 3 on the output shaft 2 or the output shaft segments 2A, 2B for gear transmission, so as to provide driving force to the clutch unit 3 to realize automatic driving.

[0049] In a further embodiment, the driven transmission part two 5 includes an internal gear ring 5A with a closed structure at one end and a connecting gear two 5B coaxially connected to the internal gear ring 5A. The driven transmission part one 4 includes a tooth-shaped column 4A and a connecting gear one 4B coaxially connected to the tooth-shaped column 4A. The internal teeth of the internal gear ring 5A are meshed with the driving rotating gear 6. The connecting gear two 5B is meshed with the connecting gear one 4B. The tooth-shaped column 4A is meshed with the clutch unit 3 to realize gear transmission. This design provides power to the clutch unit 3 through the linkage of multiple gears.

[0050] Working principle:

[0051] In the working state, when the motor 7 is started, the gear ring part 9B is driven to rotate through the transmission mechanism. Under the limitation of the limiting unit 8, the rotating driven part 14 is in a static state. Since the tooth-shaped area 10B is meshed with the internal teeth of the gear ring part 9B, when the gear ring part 9B rotates, the column 10A is driven to rotate for a simple angular displacement, so that the locking tooth 10C contacts the locking protrusion 12B on the connecting column 12A for combination. The locking tooth 10C pushes the locking protrusion 12B so that the output shaft 2 or the output shaft segments 2A, 2B rotate synchronously with the gear ring part 9B in one direction, thus being in a driving state for automatically driving the lawn mower forward;

[0052] In the non-operating state, the motor 7 is in a stopped state, and the ring gear portion 9B is not subject to external force. By performing a simple angular displacement in the opposite direction of the synchronous rotation of the output shaft 2 or the output shaft segments 2A, 2B and the ring gear portion 9B in one direction, the connecting column 12A rotates to push the locking projection 12B to separate from the locking tooth 10C so that the two are disengaged. After that, the rotating portion 12 and the output shaft 2 or the output shaft segments 2A, 2B can rotate freely. At this time, the lawn mower can be manually pushed for free forward and backward movement;

[0053] Differential working state: When the output shaft segments 2A, 2B and the ring gear portion 9B rotate synchronously in one direction, when the lawn mower is manually pushed to turn, the rotational speeds of the inner and outer output shaft segments 2A, 2B are different, and the rotational speed of the outer output shaft segment is greater than that of the inner output shaft segment. When the rotational speed of the outer output shaft segment is greater than that of the ring gear portion 9B, the locking projection 12B pushes the locking tooth 10C to separate from the locking projection 12B, so that the two are in a disengaged state. At this time, the inner and outer output shaft segments can form a differential during turning to achieve the differential function.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A transmission device with clutch and differential functions, characterized in that: The invention comprises a housing (1), wherein the housing (1) comprises at least two housing parts (1A, 1B) assembled together in a closed state of the housing (1), at least one insertion hole (15A, 15B) for entering the interior of the housing (1), and an output shaft (2), wherein the output shaft (2) is inserted into the housing (1) through the insertion hole (15A, 15B) provided on the housing (1), and the output shaft (2) is rotatably arranged in the housing (1), and the output shaft (2) is configured to at least partially extend to the outside of the housing (1) in a state in which the housing (1) is inserted and in a closed state of the housing (1), wherein the output shaft (2) is composed of a single piece or at least two output shaft segments (2A, 2B), and the housing (1) further comprises a shaft for the output shaft (2) or the output shaft segment ( 2A, 2B), the clutch unit (3) being used for driving the output shaft (2) or the output shaft segment (2A, 2B) to rotate synchronously in one direction in the housing (1) with the output shaft (2) or the output shaft segment (2A, 2B) as the axis when the output shaft (2) or the output shaft segment (2A, 2B) is in the inserted state in the housing (1) and when the housing (1) is in the closed state, the clutch unit (3) can be activated when the housing (1) is in the closed state, and in the closed state, the clutch unit (3) can be activated to freely switch between a state in which the clutch unit (3) and the output shaft (2) or the output shaft segment (2A, 2B) rotate synchronously in one direction and a state in which the output shaft (2) or the output shaft segment (2A, 2B) rotates freely; The clutch unit (3) is configured such that, in the closed state of the housing (1), according to the position of the output shaft (2) or the output shaft segment (2A, 2B) in the housing (1), the output shaft (2) or the output shaft segment (2A, 2B) is driven by the clutch unit (3) to perform a simple angular displacement in the opposite direction of synchronous rotation in one direction in the housing (1) with the output shaft (2) or the output shaft segment (2A, 2B) as the axis, so that the state in which the clutch unit (3) drives the output shaft (2) or the output shaft segment (2A, 2B) to rotate synchronously in one direction is switched to a state in which the output shaft (2) or the output shaft segment (2A, 2B) rotates freely; After the clutch unit (3) performs a simple angular displacement in the direction in which the output shaft (2) or the output shaft segments (2A, 2B) are driven to rotate synchronously, the state in which the output shaft (2) or the output shaft segments (2A, 2B) rotate freely is switched to a state in which the clutch unit (3) drives the output shaft (2) or the output shaft segments (2A, 2B) to rotate synchronously in one direction.

2. A transmission device with clutch and differential functions as claimed in claim 1, characterized in that: At least one clutch unit (3) is used on the output shaft (2).

3. A transmission device with clutch and differential functions as claimed in claim 1, characterized in that: The clutch unit (3) comprises a rotary drive part (9) for transmitting power, a rotary driven part (14) coaxially rotatably connected with the rotary drive part (9), and a limiting unit (8) for limiting the rotation of the rotary driven part (14) in a non-locking manner, wherein the rotary drive part (9), the rotary driven part (14), and the limiting unit (8) are configured to be axially penetrated by the output shaft (2) or the output shaft segments (2A, 2B), and the rotary drive part (9) and the rotary driven part (14) are rotatably arranged on the output shaft (2) or the output shaft segments (2A, 2B), and the rotary driven part (14) is connected to at least one connecting shaft (13) parallel to the output shaft (2) or the output shaft segments (2A, 2B), and the connecting shaft (13) is rotatably connected to the locking part (10) after passing through an arc segment hole (9A) correspondingly opened on the rotary drive part (9) to prevent the rotary driven part (14) from rotating. The rotation drive part (9) drives the locking part (10) to perform a simple angular displacement. After the locking part (10) performs a simple displacement, the locking part (10) is combined with the rotating part (12) connected to the output shaft (2) or the output shaft segment (2A, 2B), so that the output shaft (2) or the output shaft segment (2A, 2B) rotates synchronously with the rotation drive part (9). The output shaft (2) or the output shaft segment (2A, 2B) performs a simple angular displacement in the opposite direction to the synchronous rotation in one direction with the rotation drive part (9), so that the rotating part (12) is disengaged from the locking part (10), thereby allowing the output shaft (2) or the output shaft segment (2A, 2B) to rotate freely, wherein the box body (1) limits the limiting unit (8) to rotate with the output shaft (2) or the output shaft segment (2A, 2B) as the axis.

4. A transmission device with clutch and differential functions as claimed in claim 3, characterized in that: The limiting unit (8) adopts a two-claw spring piece or a multi-claw spring piece.

5. A transmission device with clutch and differential functions as claimed in claim 3, characterized in that: The rotary drive portion (9) comprises a gear ring portion (9B) having a closed end and having both internal teeth and external teeth, and a raised portion (9C); the raised portion (9C) is coaxially connected to the closed end of the gear ring portion (9B); the arc segment hole (9A) is located on the closed end surface of the gear ring portion (9B); the rotary driven portion (14) is coaxially rotatably arranged on the raised portion (9C); the gear ring portion (9B) is used to accommodate the rotating portion (12) and the locking portion (10); the internal teeth of the gear ring portion (9B) are used to drive the locking portion (10) to perform a simple angular displacement, thereby disengaging and combining the locking portion (10) with the rotating portion (12).

6. A transmission device with clutch and differential functions as claimed in claim 5, characterized in that: The locking portion (10) comprises a column (10A) rotatably connected to the connecting shaft (13); the column (10A) is provided with a toothed area (10B) meshing with the internal teeth of the gear ring portion (9B) and a locking tooth (10C) for engaging with or disengaging from the rotating portion (12); when the gear ring portion (9B) rotates, it drives the locking portion (10) to perform a simple angular displacement, thereby engaging with or disengaging the locking tooth (10C) from the rotating portion (12).

7. A transmission device with clutch and differential functions as claimed in claim 3, characterized in that: The rotating part (12) comprises a connecting column (12A) and a locking protrusion (12B) connected to the output shaft (2) or the output shaft section (2A, 2B), at least one locking protrusion (12B) being circumferentially arranged on the connecting column (12A), the locking protrusion (12B) being in contact with a locking tooth (10C) to limit the connecting column (12A), thereby causing the output shaft (2) or the output shaft section (2A, 2B) to rotate synchronously with the rotating drive part (9).

8. A transmission device with clutch and differential functions as claimed in claim 3, characterized in that: The rotating parts (12) on the output shaft segments (2A, 2B) are rotatably connected via a docking pin (11), and the output shaft segments (2A, 2B) are on the same straight line.

9. A transmission device with clutch and differential functions as claimed in claim 1, characterized in that: The housing (1) further comprises a motor (7) arranged in the housing (1) and supported by the housing (1), and a transmission unit located in the housing (1); an output end of the motor (7) is connected to a clutch unit (3) via a transmission mechanism for providing power to the clutch unit (3) on the output shaft (2) or the output shaft section (2A, 2B).

10. A transmission device with clutch and differential functions as claimed in claim 9, characterized in that: The transmission unit comprises a driving rotating gear (6) connected to the output end of the motor (7), a second driven transmission part (5), and at least one first driven transmission part (4), wherein the first driven transmission part (4) and the second driven transmission part (5) are rotatably arranged in the housing (1), and the first driven transmission part (4) and the second driven transmission part (5) are meshed, the driving rotating gear (6) is meshed with the second driven transmission part (5), and the first driven transmission part (4) is meshed with a clutch unit (3) on the output shaft (2) or the output shaft section (2A, 2B).

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