Electric power assisting device of hand-wrenching torque output structure and hand-wrenching force detection device

Abstract

The utility model relates to an electric power assisting device and an output force detecting device of a hand torque output structure, which comprise a device shell which is used for being buckled on one side of a tool shell where a handle is located when the device shell is used, and the device shell is provided with a shell avoiding hole which is used for avoiding the handle and a shell protruding structure. A transmission ring which is coaxially arranged with the handle during use is rotationally assembled on the device shell, an inner hole of the transmission ring is used for avoiding the handle in the installation process of the device shell, the transmission ring is located between the tool shell and the rotating handle, a torque output disc is arranged on the transmission ring, and a handle avoiding notch is formed in the torque output disc; the gap side wall of the opposite side of the handle avoiding gap is used for being matched with the corresponding side of the handle in a pushing mode so as to drive the handle to rotate when the torque output disc rotates, a motor is arranged on the device shell, and the motor is in transmission connection with the transmission ring. The utility model provides the electric power assisting device of the hand torque output structure, which can carry out electric power assisting on the hand torque output structure.

Description

Technical Field

[0001] This utility model relates to the field of manual and electric tool technology, and in particular to an electric power assist device with a hand lever torque output structure and a hand lever force detection device. Background Technology

[0002] A lever torque output structure refers to a tool that uses a handle to output torque to achieve certain functions. A typical example is a lever hoist. Existing lever hoists include... Figures 1-2 As shown, the tool includes a tool housing 1, on which a handle 4 is rotatably mounted. The handle 4 is connected to a chain 5 via a torque transmission structure. A hook 6 is provided at the bottom of the chain 5. The tool housing has a housing protrusion structure 7 on the side where the handle is located. The housing protrusion structure 7 is typically a long strip structure with two parallel short sides and two arc-shaped segments on its two long sides. A handwheel 3 is connected to the side of the handle opposite to the tool housing, and a handle lug 2 is provided at the end of the handle connected to the handwheel.

[0003] When in use, the operator turns the handle, and the torque transmission mechanism moves the hook end of the chain upward, thereby achieving the purpose of lifting heavy objects.

[0004] The problem with the existing hand lever torque output structure is that if the operator uses the lever to output torque for a long time, the workload is relatively high, so there is a need for electric assistance. However, in order to achieve smooth torque output, the lever also needs to be rotated, which is not very convenient to directly provide electric assistance.

[0005] In addition, the lever force of a lever hoist is an important indicator, which is matched with the load. Under a certain load, its magnitude represents the health status of the lever hoist. It is not easy to implement lever force detection in the existing technology with a lever torque output structure. Utility Model Content

[0006] The purpose of this utility model is to provide an electric assist device for a hand lever torque output structure that can provide electric assistance to the hand lever torque output structure; the purpose of this utility model is also to provide a hand lever force detection device that can detect the hand lever force of the hand lever torque output structure.

[0007] To solve the above-mentioned technical problems, the technical solution of the hand-operated torque output structure in this utility model is as follows:

[0008] An electric power assist device with a hand lever torque output structure includes a device housing for fastening to the handle side of a tool housing during use. The device housing has a housing clearance hole for avoiding the handle and a housing protrusion. A transmission ring coaxially aligned with the handle is rotatably mounted on the device housing during use. The inner hole of the transmission ring is used to avoid the handle during the installation of the device housing. The transmission ring is located between the tool housing and the rotating handle. A torque output disc is provided on the transmission ring. The torque output disc has a handle clearance notch. The side wall of the notch opposite to the handle clearance notch is used to push against the corresponding side of the handle to drive the handle to rotate when the torque output disc rotates. A motor is provided on the device housing and is connected to the transmission ring.

[0009] Furthermore, the shape of the handle clearance hole matches the housing protrusion structure on the tool housing, and the device housing and the housing protrusion structure are anti-rotationally engaged.

[0010] Furthermore, the transmission ring is a sprocket ring, and a power sprocket with a diameter smaller than the sprocket ring is rotatably mounted on the device housing. The motor is connected to the power sprocket, and the power sprocket is connected to the transmission ring through a toothed chain drive.

[0011] Furthermore, the transmission ring is rotatably fitted to the device housing via a rotating bearing. A mounting sleeve located around the handle clearance hole is fixed on the device housing. The inner ring of the rotating bearing is fixed to the mounting sleeve, and the transmission ring is fixed to the outer ring of the rotating bearing.

[0012] Furthermore, the electric power assist device also includes a handwheel pressure plate, which includes a U-shaped fastener body. The U-shaped fastener body includes a main back plate and side plates on both sides of the main back plate. The outer sides of the two side plates are provided with connecting edges on opposite sides. The connecting edges are connected to the torque output plate by bolts. The inner sides of the two side plates are provided with snap-fit ​​edges on opposite sides. The snap-fit ​​edges and the main back plate form a snap-fit ​​space for snapping onto the end of the handle along the extension direction of the handle. A handle avoidance channel is formed between two adjacent snap-fit ​​edges for avoiding the handle. A handwheel pressure pin coaxial with the handwheel is rotatably mounted on the main back plate.

[0013] The technical solution for the output force detection device in this utility model is as follows:

[0014] A torque output structure for hand levers includes a device housing for fastening to the side of the tool housing where the handle is located during use. The device housing has a housing clearance hole for avoiding the handle and the housing protrusion. A torque transmission disk coaxially arranged with the handle is rotatably mounted on the device housing. A power connection plate is connected to the torque transmission disk. A force sensor is arranged between the power connection plate and the device housing. A force transmission arm located on both sides of the handle is also connected to the torque transmission disk. The opposite side of the end of the force transmission arm away from the axis of the transmission disk is used to transmit force with the end of the handle away from the rotation axis of the handle.

[0015] Furthermore, a force transmission bearing is provided on the opposite side of the end of the force transmission arm away from the axis of the transmission disc to achieve force transmission cooperation with the end of the handle away from the axis of rotation of the handle.

[0016] Furthermore, a connecting arm is provided between the end of the force transmission arm away from the axis of the transmission disc and the end of the handle away from the axis of handle rotation.

[0017] Furthermore, the torque transmission disc is rotatably fitted to the device housing via a rotary bearing. A mounting sleeve located around the handle clearance hole is fixed to the device housing. The inner ring of the rotary bearing is fixed to the mounting sleeve, and the torque transmission disc is fixed to the outer ring of the rotary bearing.

[0018] Furthermore, the device housing is provided with an arc-shaped guide rail coaxial with the torque transmission disc, and the power connection plate is provided with at least two rollers that cooperate with the arc-shaped guide rail, with the rollers spaced apart circumferentially along the torque transmission disc.

[0019] The beneficial effects of this utility model are as follows: Taking the use of the electric power assist device as an example, the device housing, carrying the transmission coil and torque output disc, is sleeved on the handle along the length of the handle. When the device housing moves to the position where the handle and tool housing are aligned, the angle of the device housing is adjusted so that the transmission coil and handle are coaxially aligned. Then, the housing clearance hole of the device housing is fastened onto the housing protrusion of the tool housing. The motor operates, and the transmission coil drives the torque output disc to rotate. The torque output disc transmits power to the handle through the handle clearance notch, thereby driving the handle to rotate, thus realizing electric power assist to the torque output structure of the wrench. In this utility model, the transmission coil is located between the tool housing and the rotating handle. Therefore, when the handle is assisted in rotation, although the handle rotates, it will not interfere with other structures of the electric power assist device, allowing for smooth power assistance. Attached Figure Description

[0020] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding portions, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of a lever hoist in the prior art of this utility model;

[0022] Figure 2 yes Figure 1 Side view;

[0023] Figure 3 This is a schematic diagram of the structure of the electric power assist device in this utility model when the torque output disc is missing in one embodiment;

[0024] Figure 4 yes Figure 3 A schematic diagram showing the fit between the transmission ring, bearing, and housing.

[0025] Figure 5 yes Figure 3 Schematic diagram of the structure of the device housing;

[0026] Figure 6 yes Figure 3 Usage status diagram;

[0027] Figure 7 yes Figure 3 Schematic diagram of the medium torque output disc;

[0028] Figure 8 yes Figure 7 Sectional view along axis AA;

[0029] Figure 9 yes Figure 3 Schematic diagram of the connection between the intermediate drive ring and the drive sprocket;

[0030] Figure 10 This is a schematic diagram of the cooperation between the handwheel pressure plate and the torque output plate in this utility model;

[0031] Figure 11 This is a top-view schematic diagram showing the interaction between the handwheel pressure plate, the torque output shaft, and the handle in this utility model.

[0032] Figure 12 This is a schematic diagram of the installation process of the electric power assist device in this utility model;

[0033] Figure 13 This is a schematic diagram of the structure of Embodiment 1 of the output force detection device in this utility model;

[0034] Figure 14 yes Figure 13 Side view;

[0035] Figure 15 yes Figure 13 Diagram showing the fit between the intermediate torque output disc and the power connection plate;

[0036] Figure 16 This is a schematic diagram of the structure of Embodiment 2 of the output force detection device in this utility model;

[0037] 1. Tool housing; 2. Handle lug; 3. Handwheel; 4. Handle; 5. Chain; 6. Hook; 7. Housing protrusion structure; 8. Housing clearance hole; 9. Square housing; 10. Device housing; 11. Central clearance hole; 12. Outer clearance hole; 13. Mounting sleeve; 14. Rotary bearing; 15. Transmission ring; 16. Motor; 17. Drive sprocket; 18. Torque output disc; 19. Handle clearance notch; 20. Thin-walled section; 21. Toothed chain; 22. Handwheel pressure plate; 23. Handwheel pressure pin; 24. Connecting edge; 25. Snap-fit ​​edge; 26. Main body back plate; 27. Side plate; 28. Circular housing; 29. ​​Torque transmission disc; 31. Power connection plate; 32. Force sensor; 33. Force transmission arm; 34. Force transmission bearing; 35. Connecting arm; 36. Arc-shaped guide rail; 37. Roller. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0039] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0040] An example of an electric power assist device with a hand-operated torque output structure in this utility model is shown below. Figures 1-12 As shown:

[0041] In this embodiment, the torque output structure is a lever hoist. The lever hoist includes a tool housing 1, on which a handle 4 is rotatably mounted. The handle 4 is connected to a chain 5 via a torque transmission structure. A hook 6 is provided at the bottom of the chain 5. The tool housing has a housing protrusion 7 on the side where the handle is located. The housing protrusion 7 is typically a long strip structure with two parallel short sides and two arc-shaped segments on its two long sides. A handwheel 3 is connected to the side of the handle away from the tool housing, and a handle lug 2 is provided at the end of the handle connected to the handwheel. Lever hoists are existing technology, and their specific structure will not be described in detail here.

[0042] To illustrate the issue more clearly, in this embodiment, the handle is defined as being located on the right side of the tool housing, and the rotation axis of the handle extends in the left-right direction.

[0043] The electric power assist device includes a device housing 10 for fastening to the right side of the tool housing, where the handle is located. The device housing is as follows: Figures 3-4 As shown, it includes a circular shell portion and a square shell portion 9 disposed on the front side of the circular shell portion. The center of the circular shell portion is provided with a shell clearance hole 8 for avoiding the handle and the shell protrusion structure. In this embodiment, the shell clearance hole includes a central clearance hole 11 and a peripheral clearance hole 12 that is larger than the central clearance hole. The central clearance hole 11 can be adapted to the shell protrusion structure of one model of lever hoist, and the peripheral clearance hole can be adapted to the shell protrusion structure of another model of lever hoist. For example, in this embodiment, the central clearance hole can be adapted to the shell protrusion structure of a 3-ton lever hoist, while the peripheral clearance hole can be adapted to the shell protrusion structure of a 6-ton lever hoist. The lever hoist in this embodiment is a 3-ton lever hoist. When the central clearance hole 11 is fastened to the shell protrusion structure 7 of the lever hoist, the device shell 10 cannot rotate relative to the tool shell, that is, the device shell 10 is anti-rotating relative to the tool shell.

[0044] A mounting sleeve 13 is fixed on the right side of the circular housing portion, located around the housing clearance hole. A rotary bearing 14 is mounted on the mounting sleeve 13, and a transmission ring 15, which is coaxial with the handle during use, is connected to the rotary bearing 14. Specifically, the inner ring of the rotary bearing 14 is fixed on the mounting sleeve 13, and the outer ring of the rotary bearing is fixedly connected to the transmission ring 15. The rotary bearing 14, the transmission ring 15, and the inner hole of the mounting sleeve 13 are used to allow the handle to pass during the installation of the device housing. The rotary bearing 14 and the transmission ring 15 are located between the tool housing and the rotary handle.

[0045] In this embodiment, the transmission ring 15 is a sprocket ring, and a power sprocket 17 with a diameter smaller than the sprocket ring is rotatably mounted on the device housing. The power sprocket 17 is driven by a motor 16, and the power sprocket 17 and the transmission ring 15 are connected by a toothed chain 21. The power sprocket 17 and the motor 16 are disposed inside the square housing 9 of the device housing.

[0046] A torque output disc 18, coaxially aligned with the handle during use, is bolted to the transmission ring 15. The torque output disc 18 has a handle clearance notch 19. The opposite side wall of the handle clearance notch 19 is used to engage with the corresponding side of the handle to drive the handle to rotate when the torque output disc rotates. In this embodiment, the torque output disc has a thin-walled section 20 with an axial thickness thinner than other parts of the torque output disc. The thin-walled section 20 is located on the left side of the handle 4 during use. The handle clearance notch 19 is formed on the right side of the thin-walled section 20, and the entire handle clearance notch 19 is in the shape of an "eight" that gradually increases in width from top to bottom.

[0047] In the above embodiments, when using the device, the operator only needs to hold the device housing to work. In order to ensure the secure fixation of the device housing and the tool housing, the electric power assist device in this utility model also includes a handwheel pressure plate. The handwheel pressure plate 22 includes a U-shaped fastener body. The U-shaped fastener body includes a main back plate 26 and side plates 27 disposed on both sides of the main back plate. The outer sides of the two side plates are provided with connecting edges 24 on opposite sides. The connecting edges are connected to the torque output plate 18 by bolts. The inner sides of the two side plates are provided with snap-fit ​​edges 25 on opposite sides. A snap-fit ​​space is formed between the snap-fit ​​edges 25 and the main back plate 26 for snapping onto the end of the handle along the extension direction of the handle. A handle avoidance channel is formed between two adjacent snap-fit ​​edges for avoiding the handle. A handwheel pressure pin 23 is rotatably mounted on the main back plate and is arranged on the same axis as the handwheel. The end of the handwheel pressure pin 23 is a conical tip structure that makes point contact with the handwheel to reduce the friction between them.

[0048] The overall usage process of the electric power assist device in this utility model is as follows: (e.g.) Figure 13 The entire electric power assist device housing is installed from bottom to top. Specifically, the handle passes through the housing clearance hole, and the housing moves from bottom to top. Figure 13 In state a, until the device housing moves to the top of the handle, then adjust the angle of the device housing. Figure 13 In state b, the rotating bearing, transmission ring, and torque output disc are finally aligned coaxially with the handle. Then, the housing clearance hole is fastened to the housing protrusion 7. Subsequently, the handwheel pressure plate is fastened onto the handle from right to left, the handle passes through the handle clearance channel, and then moves from bottom to top until the locking edge moves from top to bottom to the left side of the handle's handle lug. At this point, the handwheel pressure pin is at the center of the first wheel, and the handwheel pressure plate can no longer detach from the handle in the left-right direction. Finally, the connecting edge is fixed to the torque output disc with bolts.

[0049] The motor outputs torque to the torque output disc via a power sprocket. The torque output disc then drives the handle to rotate via the corresponding side wall of the handle's clearance notch, thereby providing electric power assistance to the torque output structure of the wrench. In other embodiments of this invention, the force transmission of the transmission ring can also be achieved through other transmission methods such as gear transmission or belt transmission.

[0050] Example 1 of the output force detection device Figures 13-15 As shown: It includes a device housing 10 for fastening to the side of the tool housing where the handle is located when in use. The device housing 10 is provided with a housing clearance hole 8 for avoiding the handle and the housing protrusion structure. The device housing includes a circular housing 28 and a square housing 9 provided on the front side of the circular housing 28. The housing clearance hole 8 is provided on the circular housing 28. The specific structure of the device housing is the same as that of the device housing in the embodiment of the electric power assist device, and will not be described in detail here.

[0051] For example, a mounting sleeve is provided on the device housing, and a rotating bearing is provided on the mounting sleeve. The output force detection device also includes a torque output disk 29 that rotates and engages with the mounting sleeve through the rotating bearing. A power connection plate 31 is bolted to the torque output disk 29. The power connection plate 31 is disposed inside the square housing 9. A force sensor 32 is provided between the power connection plate 31 and the device housing. In this embodiment, the force sensor is a tension and compression sensor. One end of the force sensor 32 is hinged to the power connection plate 31, and the other end of the force sensor 32 is hinged to the square housing 9.

[0052] The torque transmission disc is also connected to force transmission arms 35 located on both sides of the handle. The opposite side of the end of the force transmission arm 35 away from the axis of the transmission disc is used to transmit force with the end of the handle away from the axis of rotation of the handle. A force transmission bearing 34 is provided on the opposite side of the end of the force transmission arm away from the axis of the transmission disc to enable force transmission with the end of the handle away from the axis of rotation of the handle. That is to say, the force transmission bearing 34 is used to transmit force with the end of the handle 4 away from the tool housing.

[0053] A connecting arm 35 is provided between the end of the force transmission arm away from the axis of the transmission disc and the end of the handle away from the axis of rotation of the handle. The connecting arm 35 is used to increase the structural strength between the two force transmission arms.

[0054] The installation of the device housing is the same as that of the electric power assist device described above. To improve the connection strength between the device housing and the tool housing, the output force measuring device in this embodiment may also include a handwheel pressure plate. The specific structure of the handwheel pressure plate is the same as that of the handwheel pressure plate in the electric power assist device embodiment described above. However, during use, the connecting edge of the handwheel pressure plate needs to be fixedly connected to the torque output plate by bolts.

[0055] When it is necessary to test the hand lever force, the device housing of the output force detection device is fastened to the protruding structure of the tool housing. The operator rotates the handle, and the force of the handle is transmitted to the torque transmission disc through the force transmission arm, and then to the force sensor. The force sensor measures the force and then calculates the torque generated by the handle.

[0056] Example 2 of the output force detection device Figure 16As shown, Embodiment 2 of the output force detection device differs from Embodiment 1 in that a larger diameter rotary bearing is used in the embodiment. However, the cost of a larger diameter rotary bearing is high. To reduce costs, the rotary bearing is not used in this invention. The square housing of the device is provided with an arc-shaped guide rail 36 arranged coaxially with the torque transmission disk. There are two arc-shaped guide rails 36, which are spaced apart. The power connection plate is provided with two rollers 37 that are respectively guided and rolled in cooperation with the corresponding arc-shaped guide rails. The rollers 37 are spaced apart along the circumference of the torque transmission disk. The movement trajectory of the power connection plate is guided by the cooperation between the arc-shaped guide rails 36 and the rollers 37.

[0057] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0059] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electric power assist device with a hand-operated torque output structure, characterized in that: The device housing includes a device housing for fastening to the side of the tool housing where the handle is located during use. The device housing has a housing clearance hole for avoiding the handle and the housing protrusion. A transmission ring coaxially arranged with the handle is rotatably mounted on the device housing during use. The inner hole of the transmission ring is used to avoid the handle during the installation of the device housing. The transmission ring is located between the tool housing and the rotating handle. A torque output disc is provided on the transmission ring. The torque output disc has a handle clearance notch. The side wall of the notch opposite to the handle clearance notch is used to push and cooperate with the corresponding side of the handle to drive the handle to rotate when the torque output disc rotates. A motor is provided on the device housing, and the motor is connected to the transmission ring for transmission.

2. The electric power assist device according to claim 1, characterized in that: The shape of the handle clearance hole matches the housing protrusion on the tool housing, and the device housing and the housing protrusion are anti-rotationally fitted.

3. The electric power assist device according to claim 1, characterized in that: The transmission ring is a sprocket ring, and a power sprocket with a diameter smaller than the sprocket ring is rotatably mounted on the device housing. The motor is connected to the power sprocket, and the power sprocket is connected to the transmission ring through a toothed chain drive.

4. The electric power assist device according to claim 1, characterized in that: The transmission ring is rotatably fitted to the device housing via a rotating bearing. A mounting sleeve located around the handle clearance hole is fixed on the device housing. The inner ring of the rotating bearing is fixed to the mounting sleeve, and the transmission ring is fixed to the outer ring of the rotating bearing.

5. The electric power assist device according to any one of claims 1 to 4, characterized in that: The electric power assist device also includes a handwheel pressure plate, which includes a U-shaped fastener body. The U-shaped fastener body includes a main back plate and side plates on both sides of the main back plate. The outer sides of the two side plates have connecting edges on opposite sides. The connecting edges are connected to the torque output plate by bolts. The inner sides of the two side plates have snap-fit ​​edges on opposite sides. The snap-fit ​​edges and the main back plate form a snap-fit ​​space for snapping onto the end of the handle along the extension direction of the handle. A handle avoidance channel is formed between two adjacent snap-fit ​​edges to avoid the handle. A handwheel pressure pin coaxial with the handwheel is rotatably mounted on the main back plate.

6. A hand lever force detection device with a hand lever torque output structure, characterized in that: The device housing includes a device housing for fastening to the side of the tool housing where the handle is located during use. The device housing is provided with a housing clearance hole for avoiding the handle and the housing protrusion. A torque transmission disk coaxially arranged with the handle is rotatably mounted on the device housing. A power connection plate is connected to the torque transmission disk. A force sensor is provided between the power connection plate and the device housing. A force transmission arm located on both sides of the handle is also connected to the torque transmission disk. The opposite side of the end of the force transmission arm away from the axis of the transmission disk is used to transmit force with the end of the handle away from the rotation axis of the handle.

7. The hand-operated force detection device according to claim 6, characterized in that: A force-transmitting bearing is provided on the opposite side of the end of the force-transmitting arm away from the axis of the transmission disc, which enables force transmission to be coordinated with the end of the handle away from the axis of rotation of the handle.

8. The hand-operated force detection device according to claim 6, characterized in that: A connecting arm is provided between the end of the force transmission arm away from the axis of the transmission disc and the end of the handle away from the axis of the handle's rotation.

9. The hand-operated force detection device according to any one of claims 6 to 8, characterized in that: The torque transmission disc is rotatably fitted to the device housing via a rotating bearing. A mounting sleeve located around the handle clearance hole is fixed on the device housing. The inner ring of the rotating bearing is fixed to the mounting sleeve, and the torque transmission disc is fixed to the outer ring of the rotating bearing.

10. The hand-operated force detection device according to any one of claims 6 to 8, characterized in that: The device housing is provided with an arc-shaped guide rail that is coaxial with the torque transmission disc, and the power connection plate is provided with at least two rollers that cooperate with the arc-shaped guide rail. The rollers are spaced apart around the circumference of the torque transmission disc.

Images