A trolley drive device with clutch function

Abstract

The utility model relates to handcart drive device technical field, especially with clutch function's handcart drive device, including power output shaft, driving clutch wheel, power output gear, driven clutch wheel, rotary power mechanism, spacing spring piece, the power output gear is formed with drive groove, driving clutch wheel is formed with power input boss one side near power output gear, driving clutch wheel power input boss inserts in drive groove, driving clutch wheel is formed with power output boss one side near driven clutch wheel, driving clutch wheel can slide along the axial direction of power output shaft, and driven clutch wheel is formed with power step, the utility model can avoid the situation that the reverse driving force and damage are caused to drive device by manpower push, can drive handcart to remove through the mode of electric drive, can be well applied to the mode of manpower push to push handcart, can be better applied to handcart.

Description

Technical fields:

[0001] This utility model relates to the technical field of handcart drive devices, and in particular to a handcart drive device with a clutch function. Background technology:

[0002] Handcarts are ubiquitous in daily life, such as outdoor camping carts and supermarket carts. Most existing handcarts are moved manually. To save effort, electric handcarts have emerged, which are handcarts equipped with a motor drive to rotate the wheels, replacing manual pushing. However, in practice, there are situations where manual pushing is necessary, such as when the power runs out or when the user prefers to move the cart manually. Because the existing motor drive maintains a continuous engagement with the wheels, it's difficult to move the electric handcart manually. Forcing manual movement can easily damage the motor drive. Therefore, there is a pressing need for a handcart drive system with a clutch function. Utility model content:

[0003] The purpose of this invention is to provide a handcart drive device with a clutch function to address the shortcomings of existing technologies. This device can avoid the reverse driving force and damage to the drive device caused by manual pushing. It can drive the handcart by electric power or by manual pushing, making it more suitable for use in handcarts.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a handcart drive device with a clutch function, comprising a power output shaft for connecting to the wheels, an active clutch wheel rotatably connected to the power output shaft, a power output gear rotatably connected to the power output shaft and located on one side of the active clutch wheel, a driven clutch wheel sleeved on the power output shaft and located on the other side of the active clutch wheel, a rotary power mechanism for driving the power output gear to rotate, and a limiting spring plate disposed on the power output shaft. The power output gear is formed with a drive groove, and the active clutch wheel... A power input protrusion is formed on the side near the power output gear. The power input protrusion of the active clutch wheel is inserted into the drive groove. A power output protrusion is formed on the side of the active clutch wheel near the driven clutch wheel. The active clutch wheel can slide along the axial direction of the power output shaft. A power step is formed on the driven clutch wheel. The power step of the driven clutch wheel includes a lifting part for pushing the active clutch wheel closer to the power output gear and a rotating pushing part for the power output protrusion to push in the circumferential direction. The limiting spring is used to make the active clutch wheel slide and reset in the direction close to the driven clutch wheel.

[0005] A further improvement to the above scheme is that the power output gear is formed with at least three drive slots, which are evenly distributed circumferentially among each drive slot. The active clutch wheel is formed with at least three power input protrusions on the side near the power output gear, which are the same number as the drive slots and correspond to each other in position. Each power input protrusion is inserted into each drive slot.

[0006] A further improvement to the above scheme is that the active clutch wheel has at least three power output protrusions formed on the side near the driven clutch wheel, and the driven clutch wheel has at least three power steps that are the same number and corresponding in position as the power output protrusions.

[0007] A further improvement to the above scheme is that the power output protrusion includes a rotating pushing part for pushing the rotating pushed part and a lifting guide part for cooperating with the lifting part.

[0008] A further improvement to the above scheme is that the lifting part and the lifting guide part are both helical curved surfaces.

[0009] A further improvement to the above scheme is that the driven clutch wheel includes a cylindrical sleeve portion, and multiple guide reinforcing ribs are integrally formed around the cylindrical sleeve portion, with the driving clutch wheel rotatably connected to each guide reinforcing rib portion.

[0010] A further improvement to the above solution is that the driven clutch wheel is integrally formed with a pin groove.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a handcart drive device with a clutch function, including a power output shaft for connecting to the wheels, an active clutch wheel rotatably connected to the power output shaft, a power output gear rotatably connected to the power output shaft and located on one side of the active clutch wheel, a driven clutch wheel sleeved on the power output shaft and located on the other side of the active clutch wheel, a rotary power mechanism for driving the power output gear to rotate, and a limiting spring plate disposed on the power output shaft. The power output gear is formed with a drive groove, and the active clutch wheel has a power input protrusion formed on the side near the power output gear. The power input protrusion of the active clutch wheel extends into the drive groove. In the moving groove, a power output protrusion is formed on the side of the active clutch wheel near the driven clutch wheel. The active clutch wheel can slide along the axial direction of the power output shaft. The driven clutch wheel is formed with a power step. The power step of the driven clutch wheel includes a lifting part for pushing the active clutch wheel closer to the power output gear and a rotating pushing part for the power output protrusion to push in the circumferential direction. The limiting spring is used to make the active clutch wheel slide and reset in the direction close to the driven clutch wheel. In this embodiment, the limiting spring clamps and pulls the side of the active clutch wheel at both ends and generates a force in the direction close to the driven clutch wheel. Of course, in other embodiments, the limiting spring can also be other structural forms.

[0012] When the rotary power mechanism drives the power output gear to rotate, the power output gear drives the input cam on the top of the drive slot to rotate, which in turn drives the active clutch wheel to rotate. As the active clutch wheel rotates, the rotating part of the drive step on the power output cam rotates, which in turn drives the driven clutch wheel to rotate, thereby driving the power output shaft to rotate and realizing the electric drive of the wheels. When the handcart is moved by manual pushing, the wheels rotate and drive the power output shaft to rotate. Correspondingly, the driven clutch wheel rotates and pushes the power output cam through the lifting part. The active clutch wheel slides along the direction closer to the power output gear. When the driving clutch wheel rotates to the position where the lifting part stops pushing the power output protrusion, the limiting spring causes the driving clutch wheel to slide back to its original position along the direction close to the driven clutch wheel. This process is repeated, and the driving clutch wheel slides back and forth with the rotation of the driven clutch wheel without rotating, thus preventing it from driving the power output gear to rotate in the opposite direction. This invention can avoid the situation where manual pushing causes reverse driving force and damage to the drive device. It can drive the handcart by electric drive and is also well-suited for pushing the handcart by manual push, making it more suitable for handcarts. Attached image description:

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0015] Figure 3 This is an exploded structural diagram of the power output gear, driving clutch wheel, driven clutch wheel, limiting spring, and power output shaft of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Power output shaft; 2. Active clutch wheel; 21. Power input protrusion; 22. Power output protrusion; 221. Rotating push part; 222. Lifting guide part; 3. Power output gear; 3. Drive groove; 31. Driven clutch wheel; 4. Power step; 41. Lifting part; 411. Rotating push part; 412. Cylindrical sleeve part; 42. Guide reinforcing rib part; 43. Pin groove; 44. Rotating power mechanism; 5. Limiting spring; 6. Detailed implementation method:

[0017] The present invention will be further described below with reference to the accompanying drawings, such as... Figure 1-3As shown, this utility model includes a power output shaft 1 for connecting to a wheel, an active clutch wheel 2 rotatably connected to the power output shaft 1, a power output gear 3 rotatably connected to the power output shaft 1 and located on one side of the active clutch wheel 2, a driven clutch wheel 4 sleeved on the power output shaft 1 and located on the other side of the active clutch wheel 2, a rotary power mechanism 5 for driving the power output gear 3 to rotate, and a limiting spring 6 disposed on the power output shaft 1. The power output gear 3 is formed with a drive groove 31, and the active clutch wheel 2 has a power input protrusion 21 formed on the side near the power output gear 3. 21 is inserted into the drive groove 31. A power output protrusion 22 is formed on the side of the drive clutch wheel 2 near the driven clutch wheel 4. The drive clutch wheel 2 can slide along the axial direction of the power output shaft 1. The driven clutch wheel 4 is formed with a power step 41, which includes a lifting part 411 for pushing the drive clutch wheel 2 towards the power output gear 3, and a rotating pushing part 412 for the power output protrusion 22 to be pushed in the circumferential direction. The limiting spring 6 is used to allow the drive clutch wheel 2 to slide and reset in the direction near the driven clutch wheel 4. When the rotating power mechanism 5 drives the power output gear 3 to rotate, the power output... Gear 3 drives the force input protrusion 21 to rotate via the drive groove 31, which in turn drives the active clutch wheel 2 to rotate. As the active clutch wheel 2 rotates, the power output protrusion 22 pushes the rotating push part 412 of the force step 41, which in turn drives the driven clutch wheel 4 to rotate, thereby driving the power output shaft 1 to rotate and realizing the electric drive of the wheel rotation. When the handcart is moved by manual pushing, the wheel rotates and drives the power output shaft 1 to rotate. Correspondingly, the driven clutch wheel 4 rotates and pushes the power output protrusion 22 through the lifting part 411. The active clutch wheel 2 slides in the direction close to the power output gear 3. When the driven clutch wheel 4 rotates... When the lifting part 411 stops pushing the power output protrusion 22, the limiting spring 6 causes the active clutch wheel 2 to slide back to its original position along the direction close to the driven clutch wheel 4. This process is repeated, and the active clutch wheel 2 slides back and forth with the rotation of the driven clutch wheel 4 without rotating, thus preventing the power output gear 3 from rotating in the reverse direction. This invention can avoid the situation where manual pushing causes reverse driving force and damage to the drive device. It can drive the handcart to move by electric drive and is also well applicable to pushing the handcart by manual push, making it more suitable for handcarts.

[0018] Compared to having only one drive groove 31 and power input protrusion 21, the power output gear 3 of this utility model is formed with at least three drive grooves 31, which are evenly distributed circumferentially. The active clutch wheel 2 has at least three power input protrusions 21 on the side near the power output gear 3, which are the same number and corresponding in position as the drive grooves 31. Each power input protrusion 21 is inserted into each drive groove 31, which can distribute the total torque to multiple contact positions, thereby improving the torque carrying capacity and transmission smoothness.

[0019] Compared to having only one power output protrusion 22 and power step 41, the active clutch wheel 2 has at least three power output protrusions 22 formed on the side near the driven clutch wheel 4, and the driven clutch wheel 4 has at least three power steps 41 with the same number and corresponding positions as the power output protrusions 22. The overall load distribution is more uniform, which can avoid stress concentration and wear, and better ensure the continuity and smoothness of power output.

[0020] The power output protrusion 22 includes a rotating pusher 221 for pushing the rotating pusher 412 and a lifting guide 222 for cooperating with the lifting part 411. The lifting guide 222 makes the push of the driven clutch wheel 4 against the driving clutch wheel 2 smoother. The lifting part 411 and the lifting guide 222 are both helical surfaces, which can further ensure a smoother push.

[0021] The driven clutch wheel 4 includes a cylindrical sleeve portion 42, and multiple guide reinforcing ribs 43 are integrally formed around the cylindrical sleeve portion 42. The driving clutch wheel 2 is rotatably connected to each guide reinforcing rib 43. The guide reinforcing ribs 43 can not only improve the structural strength of the cylindrical sleeve portion 42, but also be used for the sliding guide limit of the driving clutch wheel 2, making it more practical.

[0022] The driven clutch wheel 4 is integrally formed with a pin groove 44, which facilitates its cooperation with the power output shaft 1 with a pin inserted, thereby enabling the active clutch wheel 2 and the power output shaft 1 to rotate synchronously.

[0023] Working principle:

[0024] When the rotary power mechanism 5 drives the power output gear 3 to rotate, the power output gear 3 pushes the force input protrusion 21 to rotate through the drive groove 31, thereby driving the active clutch wheel 2 to rotate. As the active clutch wheel 2 rotates, the power output protrusion 22 pushes the rotating push part 412 of the force step 41, thereby driving the driven clutch wheel 4 to rotate, which in turn drives the power output shaft 1 to rotate and realizes the electric drive of the wheel rotation. When the handcart is moved by manual pushing, the wheel rotates and drives the power output shaft 1 to rotate. Correspondingly, the driven clutch wheel 4 rotates and pushes the power output protrusion 22 through the lifting part 411. The active clutch wheel 2 moves closer to the power output gear 3. When the driven clutch wheel 4 rotates to the position where the lifting part 411 stops pushing the power output protrusion 22, the limiting spring 6 causes the driving clutch wheel 2 to slide back to its original position in the direction close to the driven clutch wheel 4. This process is repeated, and the driving clutch wheel 2 slides back and forth with the rotation of the driven clutch wheel 4 without rotating, thus preventing it from driving the power output gear 3 to rotate in the opposite direction. This invention can avoid the situation where manual pushing causes reverse driving force and damage to the drive device. It can drive the handcart to move by electric drive and is also well applicable to pushing the handcart by manual push, making it more suitable for handcarts.

[0025] Of course, the above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A handcart drive device with a clutch function, characterized in that: The system includes a power output shaft (1) for connecting to a wheel, an active clutch wheel (2) rotatably connected to the power output shaft (1), a power output gear (3) rotatably connected to the power output shaft (1) and located on one side of the active clutch wheel (2), a driven clutch wheel (4) sleeved on the power output shaft (1) and located on the other side of the active clutch wheel (2), a rotary power mechanism (5) for driving the power output gear (3) to rotate, and a limiting spring (6) provided on the power output shaft (1). The power output gear (3) is formed with a drive groove (31), and the active clutch wheel (2) has a power input protrusion (21) formed on the side near the power output gear (3). 2) The power input protrusion (21) is inserted into the drive groove (31). The active clutch wheel (2) has a power output protrusion (22) formed on the side near the driven clutch wheel (4). The active clutch wheel (2) can slide along the axial direction of the power output shaft (1). The driven clutch wheel (4) has a power step (41). The power step (41) of the driven clutch wheel (4) includes a lifting part (411) for pushing the active clutch wheel (2) closer to the power output gear (3) and a rotating pushing part (412) for the power output protrusion (22) to push in the circumferential direction. The limiting spring (6) is used to make the active clutch wheel (2) slide and reset in the direction close to the driven clutch wheel (4).

2. A handcart drive device with clutch function according to claim 1, characterized in that: The power output gear (3) is formed with at least three drive slots (31), which are evenly distributed circumferentially. The active clutch wheel (2) is formed with at least three power input protrusions (21) on the side near the power output gear (3), which are the same number and corresponding in position as the drive slots (31). Each power input protrusion (21) is inserted into each drive slot (31).

3. A handcart drive device with clutch function according to claim 1, characterized in that: The active clutch wheel (2) has at least three power output protrusions (22) formed on the side near the driven clutch wheel (4), and the driven clutch wheel (4) has at least three power steps (41) that are the same number and corresponding in position as the power output protrusions (22).

4. A handcart drive device with clutch function according to claim 1, characterized in that: The power output protrusion (22) includes a rotating pusher (221) for pushing the rotating pusher (412) and a lifting guide (222) for cooperating with the lifting part (411).

5. A handcart drive device with clutch function according to claim 4, characterized in that: The lifting part (411) and the lifting guide part (222) are both spiral curved surfaces.

6. A handcart drive device with clutch function according to claim 1, characterized in that: The driven clutch wheel (4) includes a cylindrical sleeve (42), and multiple guide reinforcing ribs (43) are integrally formed around the cylindrical sleeve (42). The driving clutch wheel (2) is rotatably connected to each guide reinforcing rib (43).

7. A handcart drive device with clutch function according to claim 1, characterized in that: The driven clutch wheel (4) is integrally formed with a pin groove (44).

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