Tripping mechanism, driving device and electric cart

Abstract

The utility model provides a tripping mechanism, a driving device and an electric cart, the tripping mechanism comprises a transmission shaft and a tripping assembly, the transmission shaft comprises an input shaft used for being connected with an external driving mechanism and an output shaft used for being connected with an external driving wheel, the input shaft and the output shaft are coaxially arranged, and the tripping assembly comprises a movable part and a fixed part. The movable part is slidably connected to the input shaft in the axial direction of the input shaft, the fixed part is connected to the output shaft, the fixed part is connected to the output shaft, and the movable part is matched with the fixed part and used for being clamped to the fixed part; thus, the movable part is shifted to move to clamp the fixed part or move to be separated from the fixed part through external force, so that operation can be freely switched between electric driving and manual pushing according to operation requirements, and an operator can operate more flexibly and conveniently.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electric carts, and in particular to a tripping mechanism, a driving device and an electric cart. Background Art

[0002] The electric cart is directly driven by a driving mechanism to rotate the driving wheel, so that the operator can drive the electric cart to move by controlling the driving mechanism, thereby saving time and effort for the operator when working. When the existing electric cart is exhausted, or the electric cart is damaged and cannot be driven, or in the operation scenario where electric power is not required, the operator needs to replace the electric drive with manual pushing; however, when the electric cart is manually pushed, the driving wheel drives the shaft of the motor to rotate through the reducer. When the shaft of the motor rotates, an unstable magnetic field is generated inside the motor, and an unstable current is generated inside the motor, which can easily cause damage to the motor. As a result, the existing electric cart is actually unable to be directly pushed by hand, resulting in the electric cart being not flexible and convenient to use. Utility Model Content

[0003] The present disclosure provides a tripping mechanism, a driving device and an electric cart, so as to at least solve the problem that the electric cart in the prior art is not flexible and convenient enough in operation.

[0004] To achieve the above objectives, the present disclosure provides the following technical solutions: a tripping mechanism, comprising:

[0005] A transmission shaft, the transmission shaft comprising an input shaft for connecting to an external driving mechanism and an output shaft for connecting to an external driving wheel, the input shaft and the output shaft being coaxially arranged;

[0006] A release assembly comprises a movable part and a fixed part, wherein the movable part is slidably connected to the input shaft in the axial direction of the input shaft, and the fixed part is connected to the output shaft. The movable part is adapted to the fixed part and is used to be clamped on the fixed part. When the movable part and the fixed part are combined with each other, power transmission is realized between the input shaft and the output shaft; when the movable part and the fixed part are separated from each other, power transmission between the input shaft and the output shaft is disconnected.

[0007] In one embodiment, the fixed member is provided with an open groove on a side facing the movable member, and the movable member includes:

[0008] A movable body, sleeved on the input shaft;

[0009] A protrusion is protrudingly provided on a side of the movable body facing the fixing member, the protrusion is matched with the opening groove, and the protrusion is used to be clamped in the opening groove.

[0010] In one possible implementation manner, one side wall of the open groove is arranged along the axial direction of the output shaft and forms a first abutting surface, and the other side wall of the open groove is configured as a second abutting surface arranged obliquely;

[0011] When the input shaft rotates along the first direction, the movable part slides toward the fixed part until the protrusion pushes against the first pushing surface, so that the fixed part and the output shaft rotate accordingly; when the output shaft rotates along the first direction, the fixed part rotates along with the output shaft and drives the second pushing surface of the open groove to push against the protrusion, so that the movable part slides away from the fixed part.

[0012] In one embodiment, a side wall of the protrusion is provided with a third abutting surface, and another side wall of the protrusion is provided with a fourth abutting surface. The third abutting surface interacts with the first abutting surface, and the fourth abutting surface interacts with the second abutting surface.

[0013] In one embodiment, a positioning hole is formed at one end of the input shaft facing the output shaft, and the output shaft comprises:

[0014] An output shaft body connected to the fixing member;

[0015] A positioning shaft is connected to one end of the output shaft body facing the input shaft and can be movably inserted into the positioning hole; wherein,

[0016] The diameter of the positioning shaft is the same as the diameter of the positioning hole, and the positioning shaft, the output shaft and the input shaft are coaxially arranged.

[0017] In one possible implementation manner, the fixing member is sleeved on the output shaft, the number of the protrusions and the number of the opening grooves are the same and are both multiple, the multiple protrusions are circumferentially spaced about the axis of the input shaft, the multiple opening grooves are circumferentially spaced about the axis of the output shaft, and each of the protrusions is matched with a corresponding one of the opening grooves.

[0018] In one embodiment, a toggle groove is provided on a side of the movable member facing away from the fixed member, a portion of a side wall of the toggle groove is inclined and forms a fifth abutting surface, and the trip assembly further includes:

[0019] A toggle member extending into the toggle groove and used to push against the fifth pushing surface;

[0020] A supporting member, the supporting member is connected to the input shaft and is used to press against the movable member; wherein,

[0021] The axial friction force generated between the abutting member and the movable member is greater than the axial friction force generated between the movable member and the input shaft.

[0022] In one embodiment, the abutment member includes:

[0023] A connecting body, rotatably connected to the output shaft;

[0024] An elastic sheet, one end of which is connected to the connecting body, and the other end of which is pressed against the movable part.

[0025] In one embodiment, the abutment member includes:

[0026] A fixed sleeve, which is sleeved on the outer circumference of the movable part and the fixed part and is rotatably connected to the output shaft, wherein the fixed sleeve is coaxially arranged with the output shaft and is provided with a through hole, and the through hole penetrates the fixed sleeve along the radial direction of the fixed sleeve;

[0027] A covering body, covering the through hole and connected to the fixing sleeve;

[0028] An elastic body, one end of which is pressed tightly against the cover body, and the other end of which is pressed tightly against the movable part.

[0029] The present disclosure also provides the following technical solution: a driving device, the driving device comprising the above-mentioned tripping mechanism and a driving mechanism, the driving mechanism being connected to the input shaft of the tripping mechanism.

[0030] The present disclosure also provides the following technical solution: an electric cart, which includes the above-mentioned driving device.

[0031] In the above-mentioned release mechanism, the movable part is moved in the axial direction of the input shaft by external force to be clamped on the fixed part, so that when the external driving mechanism drives the input shaft to rotate, the movable part rotates with the input shaft and drives the fixed part and the output shaft to rotate, so as to realize the transmission between the output shaft and the input shaft, and make the input shaft transmit the torque to the output shaft, thereby realizing the electric drive of the electric cart, and the movable part is moved in the axial direction of the input shaft by external force to be disengaged from the fixed part, so that when the operator pushes the driving wheel to walk, the fixed part rotates with the output shaft, and the movable part and the input shaft do not rotate, thereby releasing the transmission state between the input shaft and the output shaft, so that the operator can manually push the electric cart; in this way, the movable part is moved to the clamped fixed part or moved to be disengaged from the fixed part by external force, so as to facilitate the operation and freely switch between electric drive and manual push according to the operation requirements, so that the operator can be more flexible and convenient when working.

[0032] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0034] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0035] Figure 1 A schematic structural diagram of a release mechanism provided with a resisting member in an embodiment of the present disclosure is shown;

[0036] Figure 2 Shows Figure 1 An exploded schematic diagram of the structure of the tripping mechanism;

[0037] Figure 3 Shows Figure 2 A schematic diagram of the structure of the transmission shaft, movable parts, fixed parts and toggle parts;

[0038] Figure 4 Shows Figure 3 A schematic diagram of the structure of the fixing parts;

[0039] Figure 5 Shows Figure 3 Schematic diagram of the structure of the moving parts;

[0040] Figure 6 A schematic structural diagram of a tripping mechanism provided with another resisting member in an embodiment of the present disclosure is shown.

[0041] Description of the numbers in the figure:

[0042] In the figure: 11, transmission shaft, 111, input shaft, 112, output shaft, 1121, output shaft body, 1122, positioning shaft, 113, positioning hole, 12, release assembly, 121, movable part, 1211, movable body, 1212, protrusion, 1212a, third push surface, 1212b, fourth push surface, 122, fixing part, 123, opening groove, 1231, first push surface, 1232, second push surface, 124, toggle groove, 125, fifth push surface, 126, toggle part, 127, holding part, 1271, connecting body, 1272, elastic sheet, 1273, fixing sleeve, 1274, cover body, 1275, elastic body, 1276, through hole. DETAILED DESCRIPTION

[0043] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0044] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of this disclosure can be achieved, and this document is not limited here.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] For the sake of convenience, when the electric cart moves forward, the rotation direction of the transmission shaft 11 and the driving wheel is the forward rotation direction, and when the electric cart moves backward, the rotation direction of the transmission shaft 11 and the driving wheel is the reverse rotation direction.

[0047] Please also read Figure 1 and 2 The present embodiment provides a release mechanism, which includes a transmission shaft 11 and a release assembly 12. The transmission shaft 11 includes an input shaft 111 for connecting to an external driving mechanism and an output shaft 112 for connecting to an external driving wheel. The input shaft 111 and the output shaft 112 are coaxially arranged. The release assembly 12 includes a movable part 121 and a fixed part 122. The movable part 121 is slidably connected to the input shaft 111 in the axial direction of the input shaft 111, and the fixed part 122 is connected to the output shaft 112. The fixed part 122 is connected to the output shaft 112. The movable part 121 is adapted to the fixed part 122 and is used to be clamped on the fixed part 122. When the movable part 121 and the fixed part 122 are combined with each other, power transmission is realized between the input shaft 111 and the output shaft 112; when the movable part 121 and the fixed part 122 are separated from each other, power transmission between the input shaft 111 and the output shaft 112 is disconnected.

[0048] In the above-mentioned release mechanism, the movable member 121 is moved in the axial direction of the input shaft 111 by external force until it is clamped on the fixed member 122, so that when the external driving mechanism drives the input shaft 111 to rotate, the movable member 121 rotates with the input shaft 111 and drives the fixed member 122 and the output shaft 112 to rotate, so as to realize the transmission between the output shaft 112 and the input shaft 111, and the input shaft 111 transmits the torque to the output shaft 112, thereby realizing the electric drive of the electric cart. The movable member 121 is moved in the axial direction of the input shaft 111 by external force until it is clamped on the fixed member 122, so that when the external driving mechanism drives the input shaft 111 to rotate, the movable member 121 rotates with the input shaft 111 and drives the fixed member 122 and the output shaft 112 to rotate, so as to realize the transmission between the output shaft 112 and the input shaft 111, and the input shaft 111 transmits the torque to the output shaft 112, thereby realizing the electric drive of the electric cart. The movable part 121 is separated from the fixed part 122, so that when the operator pushes the driving wheel to move, the fixed part 122 rotates with the output shaft 112, and the movable part 121 and the input shaft 111 do not rotate, thereby releasing the transmission state between the input shaft 111 and the output shaft 112, so that the operator can manually push the electric cart; in this way, the movable part 121 is moved to the fixed part 122 or to be separated from the fixed part 122 by external force, so that the operator can freely switch between electric drive and manual push according to the operation requirements, so that the operator can be more flexible and convenient when working.

[0049] Please also read Figure 2 and 3 In some embodiments, an opening groove 123 is provided on a side of the fixed member 122 facing the movable member 121. The movable member 121 includes a movable body 1211 and a protrusion 1212. The movable body 1211 is sleeved on the input shaft 111. The protrusion 1212 is protruded from a side of the movable body 1211 facing the fixed member 122. The protrusion 1212 is adapted to the opening groove 123 and is used to be clamped in the opening groove 123.

[0050] In this way, when an external force pushes the movable body 1211, the protrusion 1212 moves with the movable body 1211 to be clamped in the open groove 123, thereby realizing a clamping connection between the fixed part 122 and the movable part 121, so that the movable part 121 can be pushed by an external force to realize a quick clamping connection with the fixed part 122, thereby improving the clamping efficiency between the fixed part 122 and the movable part 121. At the same time, the structure of the protrusion 1212 and the slotted groove is simple and easy to process, so as to reduce the production cost of the tripping assembly 12.

[0051] Please also read Figure 2 and Figure 4In some embodiments, one side wall of the opening groove 123 is arranged along the axial direction of the output shaft 112 and forms a first abutting surface 1231, and the other side wall of the opening groove 123 is set as a second abutting surface 1232 arranged obliquely. When the input shaft 111 rotates along the first direction, the movable member 121 slides toward the fixed member 122 until the protrusion 1212 pushes against the first abutting surface 1231, so that the fixed member 122 and the output shaft 112 rotate accordingly; when the output shaft 112 rotates along the first direction, the fixed member 122 rotates along with the output shaft 112 and drives the second abutting surface 1232 of the opening groove 123 to push against the protrusion 1212, so that the movable member 121 slides away from the fixed member 122. Specifically, the first direction is the rotation direction of the transmission shaft 11 when the electric cart moves forward, that is, the positive rotation direction of the transmission shaft 11.

[0052] In this way, when the external driving mechanism drives the input shaft 111 to rotate forward, the protrusion 1212 rotates with the input shaft 111 and moves from the second abutting surface 1232 position close to the opening groove 123 to abut against the first abutting surface 1231 and then pushes against the first abutting surface 1231, so that the protrusion 1212 drives the fixing member 122 and the output shaft 112 to rotate, thereby achieving a transmission state between the input shaft 111 and the output shaft 112. When the electric cart is manually pushed forward, the output shaft 112 drives the fixing member 122 and the output shaft 112 to rotate. The fixed piece 122 rotates forwardly, so that the second abutting surface 1232 inclined on the opening groove 123 moves to press against the protrusion 1212, and the second abutting surface 1232 pushes the protrusion 1212 to move axially along the input shaft 111 to disengage from the opening groove 123, so as to release the transmission between the input shaft 111 and the output shaft 112, and the torque can no longer be transmitted, thereby realizing automatic disengagement between the input shaft 111 and the output shaft 112, optimizing the structure of the tripping mechanism and further improving the convenience of operation.

[0053] See also Figure 3 In some embodiments, a side wall of the protrusion 1212 is provided with a third push surface 1212a, and the other side wall of the protrusion 1212 is provided with a fourth push surface 1212b. The third push surface 1212a interacts with the first push surface 1231, and the fourth push surface 1212b interacts with the second push surface 1232.

[0054] In this way, by providing a first pushing surface 1231 and a third pushing surface 1212a that fit together on the protrusion 1212, a larger contact area is provided between the first pushing surface 1231 and the third pushing surface 1212a, so that the force between the third pushing surface 1212a and the first pushing surface 1231 is more evenly distributed, thereby reducing the wear between the protrusion 1212 and the fixing member 122. By providing a second pushing surface 1232 and a fourth pushing surface 1212b that fit together on the protrusion 1212, a larger contact area is provided between the second pushing surface 1232 and the fourth pushing surface 1212b, so that the force between the second pushing surface 1232 and the fourth pushing surface 1212b is more evenly distributed, thereby reducing the wear between the protrusion 1212 and the fixing member 122.

[0055] See also Figure 3 In some embodiments, a positioning hole 113 is opened at one end of the input shaft 111 facing the output shaft 112, and the output shaft 112 includes an output shaft body 1121 and a positioning shaft 1122. The output shaft body 1121 is connected to the fixing member 122, and the positioning shaft 1122 is connected to one end of the output shaft body 1121 facing the input shaft 111 and is movably inserted into the positioning hole 113. The diameter of the positioning shaft 1122 is the same as the diameter of the positioning hole 113, and the positioning shaft 1122, the output shaft 112 and the input shaft 111 are coaxially arranged.

[0056] In this way, by inserting the positioning shaft 1122 into the positioning hole 113 , the input shaft 111 and the output shaft 112 can be positioned. The positioning structure is simple and the positioning is convenient and fast, thereby improving the positioning efficiency between the input shaft 111 and the output shaft 112 .

[0057] In some embodiments, the movable part 121 can be slidably mounted on the input shaft 111, the fixed part 122 is mounted on the output shaft 112, the number of protrusions 1212 and the number of opening grooves 123 are the same and both are multiple, the multiple protrusions 1212 are circumferentially spaced around the axis of the input shaft 111, the multiple opening grooves 123 are circumferentially spaced around the axis of the output shaft 112, and each protrusion 1212 is matched with a corresponding opening groove 123.

[0058] In this way, by providing multiple protrusions and multiple open grooves 123, and each protrusion is adapted to one of the open grooves 123, so that there is a larger push area between the movable part 121 and the fixed part 122, thereby reducing the wear between the movable part 121 and the fixed part 122, and further increasing the service life of the trip assembly 12.

[0059] Please also read Figure 2 and Figure 5In some embodiments, a toggle groove 124 is provided on the side of the movable member 121 away from the fixed member 122, a portion of a side wall of the toggle groove 124 is inclined and formed with a fifth abutting surface 125, the fifth abutting surface 125 is connected to the bottom wall of the toggle groove 124, the tripping assembly 12 also includes a toggle member 126 and a supporting member 127, the toggle member 126 extends into the toggle groove 124 and is used to push against the fifth abutting surface 125, the supporting member 127 is connected to the input shaft 111 and is used to press against the movable member 121, and the axial friction force generated between the supporting member 127 and the movable member 121 is greater than the axial friction force generated between the movable member 121 and the input shaft 111.

[0060] In this way, the supporting member 127 is pressed against the side wall of the movable member 121, so that a greater friction force is generated between the supporting member 127 and the movable member 121, so that when the external driving mechanism drives the input shaft 111 to rotate, the shifting member 126 and the movable member 121 can rotate relative to each other, and the shifting member 126 pushes the fifth pushing surface 125 to make the movable member 121 slide in the axial direction of the input shaft 111 until the protrusion 1212 is again inserted into the open groove 123, so that the input shaft 111 and the output shaft 112 are restored to the transmission state again, and the electric cart is automatically switched from the manual pushing mode to the electric pushing mode again, which further improves the flexibility and convenience of the operator in switching the operating mode.

[0061] See also Figure 2 In some embodiments, the abutting member 127 includes a fixing sleeve 1273, a cover body 1274 and an elastic body 1275. The fixing sleeve 1273 is sleeved on the outer periphery of the movable member 121 and the fixed member 122 and is rotatably connected to the output shaft 112. The fixing sleeve 1273 is coaxially arranged with the output shaft 112 and is provided with a through hole 1276. The through hole 1276 penetrates the fixing sleeve 1273 along the radial direction of the fixing sleeve 1273. The cover body 1274 is covered with the through hole 1276 and connected to the fixing sleeve 1273. One end of the elastic body 1275 is pressed against the cover body 1274, and the other end of the elastic body 1275 is pressed against the movable member 121. The spring is always in a compressed state. Exemplarily, the elastic body 1275 can be a spring, or a spring and a steel ball. The steel ball is connected to one end of the spring away from the cover body 1274 and is used to press against the movable member 121.

[0062] In this way, the elastic force generated by the elastic body 1275 itself presses against the outer periphery of the movable part 121, so that the friction force generated between the elastic body 1275 and the movable part 121 is greater than the friction force generated between the input shaft 111 and the movable part 121, and when the input shaft 111 rotates, the shifting member 126 rotates with the input shaft 111 and generates relative rotation with the movable part 121, so that the shifting member 126 pushes against the fifth pushing surface 125 and drives the movable part 121 to move axially along the input shaft 111 until it is clamped on the fixed member 122 again.

[0063] In this embodiment, the number of the toggle grooves 124, the fifth push surface 125, the through hole 1276, the cover body 1274 and the elastic body 1275 is the same and they are all multiple. The multiple toggle grooves 124, the through hole 1276, the cover body 1274 and the elastic body 1275 are arranged at circumferential intervals with the axis of the output shaft 112 as the axis, and a fifth push surface 125 is provided on a side wall of each toggle groove 124.

[0064] See also Figure 6 In some embodiments, the supporting member 127 includes a connecting body 1271 and an elastic sheet 1272 . The connecting body 1271 is rotatably connected to the output shaft 112 , one end of the elastic sheet 1272 is connected to the connecting body 1271 , and the other end of the elastic sheet 1272 is pressed against the movable member 121 .

[0065] In this way, the elastic force generated by the elastic sheet 1272 itself presses against the outer periphery of the movable part 121, so that the friction force generated between the movable part 121 and the elastic sheet 1272 is greater than the friction force between the movable part 121 and the transmission shaft 11, and when the input shaft 111 rotates, the shifting member 126 rotates with the input shaft 111 and generates relative rotation with the movable part 121, so that the shifting member 126 pushes against the fifth pushing surface 125 and drives the movable part 121 to move axially along the input shaft 111 until it is clamped on the fixed member 122 again.

[0066] In this embodiment, the connecting body 1271 is sleeved on the output shaft 112 , and there are multiple elastic sheets 1272 . The multiple elastic sheets 1272 are circumferentially spaced about the axis of the output shaft 112 and connected to the connecting body 1271 .

[0067] The operating principle of the above tripping mechanism is roughly as follows:

[0068] First, when the electric driving wheel moves forward, the toggle member 126 rotates in the positive direction along with the input shaft 111 and pushes against the fifth pushing surface 125, so that the movable member 121 moves along the axial direction of the input shaft 111 until it is clamped on the fixed member 122;

[0069] Then, the toggle member 126 rotates along with the input shaft 111 and toggle the movable member 121 to rotate, so that the movable member 121 drives the fixed member 122 and the output shaft 112 to rotate, so as to facilitate the torque transmission between the input shaft 111 and the output shaft 112, thereby realizing the external driving mechanism driving the driving wheel to move forward;

[0070] Next, during manual pushing operation, external force pushes the electric cart forward, the running wheel drives the output shaft 112 to rotate forward, and the output shaft 112 drives the fixing member 122 to rotate forward, so that the second abutting surface 1232 inclined on the opening groove 123 pushes the protrusion 1212 to move along the axial direction of the input shaft 111 until it is out of the opening groove 123;

[0071] Finally, when the output shaft 112 rotates forward, the fixed part 122 and the movable part 121 are automatically separated, and when the input shaft 111 rotates forward, the fixed part 122 and the movable part 121 are automatically clamped and connected, so that the transmission state between the input shaft 111 and the output shaft 112 can be automatically switched between electric drive and manual push, thereby realizing automatic switching between electric operation and manual operation, thereby improving the flexibility and convenience of the operator during operation.

[0072] This embodiment further provides a driving device, which includes the above-mentioned tripping mechanism and a driving mechanism, wherein the driving mechanism is connected to the input shaft 111 of the tripping mechanism, and is used to drive the input shaft 111 to rotate. Exemplarily, the driving mechanism may be a motor.

[0073] Specifically, the driving mechanism and the release mechanism are arranged along the radial direction of the input shaft 111, so as to reduce the axial length of the driving device and facilitate installation on a chassis with a smaller installation space, thereby adapting to a smaller chassis installation space.

[0074] This embodiment also provides an electric cart, which includes the above-mentioned driving device.

[0075] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A tripping mechanism, characterized in that: include: A transmission shaft, the transmission shaft comprising an input shaft for connecting to an external driving mechanism and an output shaft for connecting to an external driving wheel, the input shaft and the output shaft being coaxially arranged; A release assembly comprises a movable part and a fixed part, wherein the movable part is slidably connected to the input shaft in the axial direction of the input shaft, and the fixed part is connected to the output shaft. The movable part is adapted to the fixed part and is used to be clamped on the fixed part. When the movable part and the fixed part are combined with each other, power transmission is realized between the input shaft and the output shaft; when the movable part and the fixed part are separated from each other, power transmission between the input shaft and the output shaft is disconnected.

2. The tripping mechanism according to claim 1, characterized in that: The fixed part has an open groove on one side facing the movable part, and the movable part includes: A movable body, sleeved on the input shaft; A protrusion is protrudingly provided on a side of the movable body facing the fixing member, the protrusion is matched with the opening groove, and the protrusion is used to be clamped in the opening groove.

3. The tripping mechanism according to claim 2, characterized in that: One side wall of the open groove is arranged along the axial direction of the output shaft and forms a first abutting surface, and the other side wall of the open groove is set as a second abutting surface arranged obliquely; When the input shaft rotates along the first direction, the movable part slides toward the fixed part until the protrusion pushes against the first pushing surface, so that the fixed part and the output shaft rotate accordingly; when the output shaft rotates along the first direction, the fixed part rotates along with the output shaft and drives the second pushing surface of the open groove to push against the protrusion, so that the movable part slides away from the fixed part.

4. The tripping mechanism according to claim 3, characterized in that: A third abutting surface is disposed on one side wall of the protrusion, and a fourth abutting surface is disposed on the other side wall of the protrusion. The third abutting surface interacts with the first abutting surface, and the fourth abutting surface interacts with the second abutting surface.

5. The tripping mechanism according to claim 1, characterized in that: The input shaft is provided with a positioning hole at one end thereof facing the output shaft, and the output shaft comprises: An output shaft body connected to the fixing member; A positioning shaft is connected to one end of the output shaft body facing the input shaft and can be movably inserted into the positioning hole; wherein, The diameter of the positioning shaft is the same as the diameter of the positioning hole, and the positioning shaft, the output shaft and the input shaft are coaxially arranged.

6. The tripping mechanism according to claim 2, characterized in that: The fixing member is sleeved on the output shaft, the number of the protrusions and the number of the open grooves are the same and both are multiple, the multiple protrusions are arranged at circumferential intervals with the axis of the input shaft as the axis, the multiple open grooves are arranged at circumferential intervals with the axis of the output shaft as the axis, and each of the protrusions is adapted to a corresponding one of the open grooves.

7. The tripping mechanism according to claim 1, characterized in that: A toggle groove is provided on one side of the movable member away from the fixed member, a portion of a side wall of the toggle groove is inclined and forms a fifth abutting surface, and the trip assembly further includes: A toggle member extending into the toggle groove and used to push against the fifth pushing surface; A supporting member, the supporting member is connected to the input shaft and is used to press against the movable member; wherein, The axial friction force generated between the abutting member and the movable member is greater than the axial friction force generated between the movable member and the input shaft.

8. The tripping mechanism according to claim 7, characterized in that: The abutment member comprises: A connecting body, rotatably connected to the output shaft; An elastic sheet, one end of which is connected to the connecting body, and the other end of which is pressed against the movable part.

9. The tripping mechanism according to claim 7, characterized in that: The abutment member comprises: A fixed sleeve, which is sleeved on the outer circumference of the movable part and the fixed part and is rotatably connected to the output shaft, wherein the fixed sleeve is coaxially arranged with the output shaft and is provided with a through hole, and the through hole penetrates the fixed sleeve along the radial direction of the fixed sleeve; A covering body, covering the through hole and connected to the fixing sleeve; An elastic body, one end of which is pressed tightly against the cover body, and the other end of which is pressed tightly against the movable part.

10. A driving device, characterized in that: The driving device comprises: The tripping mechanism according to any one of claims 1 to 9; A driving mechanism is connected to an input shaft of the tripping mechanism.

11. An electric cart, characterized in that: The electric cart comprises the driving device as claimed in claim 10.

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