A force relief device and a mechanical arm for fitness equipment

By introducing a pin assembly and a circuit board touch-sensitive area into the robotic arm of the fitness equipment, the problem of force relief protection during height adjustment of the robotic arm is solved, thereby improving the convenience and safety of the equipment.

CN224573185UActive Publication Date: 2026-07-31QUDONG FUTURE (SHENZHEN) TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QUDONG FUTURE (SHENZHEN) TECH CO LTD
Filing Date
2025-07-21
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing fitness equipment robotic arms lack effective force relief protection devices, which may cause them to accelerate downwards during height adjustment, generating noise, damaging the equipment, and posing safety hazards.

Method used

A force-relieving protection device including a pin assembly, a circuit board assembly, and a cover was designed. Through the cooperation of the touch sensing area and the pin assembly, force-relieving protection is achieved when the height of the robotic arm is adjusted. The force-relieving signal is triggered by the touch sensing area of ​​the circuit board to prevent the robotic arm from accelerating downward.

Benefits of technology

This improves the ease of use and safety of fitness equipment, prevents the robotic arm from accelerating downwards when adjusting the height, and reduces equipment damage and safety risks.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a force-relieving protection device and a robotic arm for fitness equipment, comprising: a pin assembly, a circuit board assembly, and a cover. The circuit board assembly is disposed between the pin assembly and the cover. The circuit board assembly includes a circuit board, a battery compartment, and a battery. The battery is disposed on a first side of the circuit board through the battery compartment, and a touch-sensing area is provided on a second side of the circuit board. The pin assembly is disposed on the second side of the circuit board, and a touch portion is provided on the side of the pin assembly away from the cover. The position of the touch portion corresponds to the position of the touch-sensing area. When the user needs to adjust the height of the robotic arm, their finger will touch the touch portion, thereby triggering the touch sensing through the touch-sensing area and the circuit board, providing a hardware basis for force-relieving protection of the fitness equipment. This utility model has a simple and efficient structural design, which can effectively improve the ease of use and safety performance of fitness equipment.
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Description

Technical Field

[0001] This utility model relates to a sensing protection device, more particularly to a force relief protection device applied to fitness equipment, and further to a robotic arm for fitness equipment including the force relief protection device. Background Technology

[0002] In the field of fitness equipment, robotic arms are a key component of many devices used to assist users in various strength training and exercises. However, existing fitness equipment robotic arms generally suffer from a significant drawback: the lack of effective force-relieving and protective devices. This problem is particularly pronounced when users adjust the height of the robotic arm, causing considerable inconvenience and potential safety hazards.

[0003] Specifically, when users need to adjust the height of the robotic arm to suit different training needs or individual heights, since the robotic arm usually has a certain weight, if there is a lack of corresponding unloading basis during height adjustment, that is, if the overall force of the fitness equipment is not unloaded, the robotic arm may accelerate downward due to excessive weight. In this case, not only will the robotic arm collide violently with the support structure or other components, resulting in noise and equipment damage, but more seriously, it may also cause injury to the user's body, thus posing a certain safety hazard. Summary of the Invention

[0004] The technical problem this invention aims to solve is to provide a force-relieving protection device for fitness equipment, providing a hardware structural basis for force-relieving protection of fitness equipment and improving the ease of use and safety performance of the equipment. Furthermore, this invention provides a robotic arm for fitness equipment that includes this force-relieving protection device.

[0005] To address this issue, the present invention provides a force-relieving protection device, comprising: a pin assembly, a circuit board assembly, and a cover, wherein the circuit board assembly is disposed between the pin assembly and the cover; the circuit board assembly includes a circuit board, a battery compartment, and a battery, wherein the battery is disposed on a first side of the circuit board through the battery compartment, and a touch-sensing area is provided on a second side of the circuit board; the pin assembly is disposed on the second side of the circuit board, and a touch portion is provided on the side of the pin assembly away from the cover, the position of the touch portion corresponding to the position of the touch-sensing area.

[0006] A further improvement of this utility model is that the touch sensing area is disposed at the upper and lower ends of the second side of the circuit board.

[0007] A further improvement of this utility model is that the pin assembly includes a pin handle, a pin mounting base, and a pin, wherein the pin is mounted in the pin handle via the pin mounting base.

[0008] A further improvement of this utility model is that the pin mounting seat is located in the middle of the side of the pin handle away from the cover.

[0009] A further improvement of this utility model is that a retaining ring is provided at one end of the pin, a movable end is provided at the other end of the pin, a through hole is provided at the end of the pin mounting base near the pin handle, the retaining ring is provided in the pin mounting base, and the movable end passes through the through hole.

[0010] A further improvement of this utility model is that both the through hole and the movable end are provided with limiting planes.

[0011] A further improvement of this utility model is that a pin mounting cavity is provided in the middle of the pin handle, a spring is provided in the pin mounting cavity, the pin mounting seat is slidably disposed in the pin mounting cavity, and the spring is sleeved between the pin mounting seat and the pin.

[0012] A further improvement of this utility model is that a guide rail is also provided in the pin mounting cavity, and the pin mounting seat is slidably connected to the pin mounting cavity through the guide rail.

[0013] A further improvement of this utility model is that a first fixing hole is provided at one end of the pin near the pin handle, a second fixing hole is provided in the pin mounting cavity, and the pin handle is fixedly connected to the pin by passing through the second fixing hole and the first fixing hole via a fixing member.

[0014] This utility model also provides a robotic arm for fitness equipment, which includes the force-relieving protection device as described above, and includes a robotic arm and a robotic arm fixing assembly. The pin assembly is inserted through the robotic arm fixing assembly, and the robotic arm fixing assembly is connected to the robotic arm.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: A circuit board assembly is set between the pin assembly and the cover. The circuit board assembly includes a circuit board, a battery compartment, and a battery. The battery is disposed on a first side of the circuit board through the battery compartment, and a touch-sensing area is provided on a second side of the circuit board. The pin assembly is disposed on the second side of the circuit board, and a touch part is provided on the side of the pin assembly away from the cover. The position of the touch part corresponds to the position of the touch-sensing area. Therefore, when the user needs to adjust the height of the robotic arm, the finger will touch the touch part, thereby triggering the touch sensing through the touch-sensing area and its circuit board, providing a hardware structural basis for the force-relieving protection of the fitness equipment. The structural design of this utility model is simple and efficient, and can effectively improve the ease of use and safety performance of fitness equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional structural schematic diagram of one embodiment of the present utility model;

[0018] Figure 3 This is an exploded structural diagram of one embodiment of the present invention;

[0019] Figure 4 This is an exploded structural diagram of one embodiment of the present invention from another perspective;

[0020] Figure 5 This is an exploded view of the pin assembly according to one embodiment of the present invention;

[0021] Figure 6 This is an exploded view of the pin assembly of one embodiment of the present invention from another perspective;

[0022] Figure 7 This is a schematic diagram of the structure of a latch handle according to an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of another embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the application scenario of this utility model. Detailed Implementation

[0025] In the description of this utility model, if directional descriptions are involved, such as "up," "down," "front," "back," "left," "right," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. If a certain technical feature is referred to as "set," "fixed," "connected," or "installed" on another technical feature, it can be directly set, fixed, or connected to the other technical feature, or it can be indirectly set, fixed, connected, or installed on the other technical feature.

[0026] In the description of this utility model, the term "several" means one or more; the term "multiple" means two or more; the terms "greater than," "less than," and "exceeding" should be understood as excluding the stated number; and the terms "above," "below," and "within" should be understood as including the stated number. The terms "first," "second," etc., should be understood as being used only to distinguish identical or similar technical feature names, and should not be interpreted as implying / indicating the relative importance of the technical features, the number of technical features, or the sequential relationship between the technical features.

[0027] The preferred embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 9 As shown, this embodiment provides a force-relieving protection device, including: a pin assembly 1, a circuit board assembly 2, and a cover 3. The circuit board assembly 2 is disposed between the pin assembly 1 and the cover 3. The circuit board assembly 2 includes a circuit board 21, a battery compartment 22, and a battery 23. The battery 23 is disposed on a first side of the circuit board 21 through the battery compartment 22. A touch sensing area 211 is provided on a second side of the circuit board 21. The pin assembly 1 is disposed on the second side of the circuit board 21, and a touch part 11 is provided on the side of the pin assembly 1 away from the cover 3. The position of the touch part 11 corresponds to the position of the touch sensing area 211.

[0029] In this embodiment, the latch assembly 1 refers to a movable fixing assembly including the latch 14; the circuit board assembly 2 refers to a structural assembly including a PCB circuit board (i.e., circuit board 21); the cover 3 refers to the cover of the latch handle 12, which, since it is located on the outside of the battery 23, can also be called a battery cover. The touch sensing area 211 refers to the touch sensing area on the back of the circuit board 21, and its position corresponds to the touch part 11 of the latch assembly 1. The touch part 11 refers to the position where the user's hand is gripping the device, such as... Figure 2 and Figure 3 As shown.

[0030] In actual use, such as Figures 1 to 3 ,as well as Figure 8 and Figure 9As shown, when a user needs to adjust the height of the robotic arm 4, their finger will touch the touch part 11, which will trigger the touch sensing through the touch sensing area 211 and its circuit board 21. This touch sensing can serve as a force-relieving trigger signal for the fitness equipment, that is, it can be used as a trigger signal for unloading the force of the entire machine, preventing the robotic arm 4 from accelerating downwards due to excessive weight when the user adjusts it. As for the implementation of the touch sensing, existing technology can be used; therefore, this embodiment will not describe the principle and implementation process of the touch sensing in detail. In summary, this embodiment provides a hardware foundation for force-relieving protection of fitness equipment. The overall structure is simple and efficient, effectively improving the ease of use and safety performance of the fitness equipment.

[0031] like Figure 3 As shown, the touch sensing area 211 in this embodiment is located at the upper and lower ends of the second side of the circuit board 21. Correspondingly, the touch part 11 is also located at the upper and lower ends of the inner side of the pin assembly 1. In actual use, when the user wants to adjust the height of the robotic arm 4, the finger will first touch the touch part 11 at the upper and lower ends, which will trigger the touch sensing.

[0032] like Figure 2 and Figure 3 As shown, the latch assembly 1 in this embodiment includes a latch handle 12, a latch mounting base 13, and a latch 14. The latch 14 is mounted in the latch handle 12 via the latch mounting base 13. Preferably, the latch mounting base 13 is located in the middle of the side of the latch handle 12 away from the cover 3, making the structure of the latch handle 12 symmetrical, which is convenient for processing and production, and also convenient for users.

[0033] like Figure 5 and Figure 6 As shown, in this embodiment, one end of the pin 14 is provided with a retaining ring 141, and the other end of the pin 14 is provided with a movable end 142. The pin mounting base 13 is provided with a through hole 131 at one end near the pin handle 12. The retaining ring 141 is stopped in the pin mounting base 13, and the movable end 142 passes through the through hole 131, thereby enabling the pin 14 to move relative to the pin mounting base 13 and be limited by the retaining ring 141.

[0034] Preferred, such as Figure 5 As shown, in this embodiment, both the through hole 131 and the movable end 142 are provided with a limiting plane 15. That is, the movable end 142 of the pin 14 is not a cylindrical structure, but is provided with a limiting plane 15, which can limit and guide the movement of the pin 14.

[0035] Preferred, such as Figure 6 and Figure 7 As shown, in this embodiment, the middle part of the pin handle 12 is provided with a pin mounting cavity 121, a spring 122 is provided in the pin mounting cavity 121, and the pin mounting seat 13 is slidably disposed in the pin mounting cavity 121. Figure 2 As shown, the spring 122 is sleeved between the pin mounting base 13 and the pin 14. More specifically, the spring 122 is sleeved between the retaining ring 141 of the pin mounting base 13 and the pin 14, thereby ensuring that the pin 14 moves towards the cover 3 as the pin handle 12 is pulled outward. Furthermore, after the user releases the handle, the spring 122 provides elastic force to cause the pin 14 to automatically spring back.

[0036] Preferred, such as Figure 6 and Figure 7 As shown, the pin mounting cavity 121 in this embodiment is also provided with a guide rail 123. The pin mounting seat 13 is slidably connected to the pin mounting cavity 121 through the guide rail 123, so as to provide a guide rail movement basis between the pin handle 12 and the pin mounting seat 13 and realize stable relative movement.

[0037] Preferred, such as Figure 5 As shown, in this embodiment, the pin 14 near the pin handle 12 has a first fixing hole 143, as... Figure 7 As shown, a second fixing hole 124 is provided in the pin mounting cavity 121, such as... Figure 4 As shown, the pin handle 12 passes through the second fixing hole 124 and the first fixing hole 143 via the fixing member 16 and is fixedly connected to the pin 14, thereby reliably realizing the fixing function between the pin handle 12 and the pin 14.

[0038] like Figure 8 and Figure 9 As shown, this embodiment also provides a robotic arm for fitness equipment, including the force-relieving protection device described above, and comprising a robotic arm 4 and a robotic arm fixing assembly 5. The pin assembly 1 is inserted into the robotic arm fixing assembly 5, and the robotic arm fixing assembly 5 is connected to the robotic arm 4. The robotic arm fixing assembly 5 refers to the fixing structure assembly of the robotic arm 4. The robotic arm fixing assembly 5 cooperates with the force-relieving protection device to realize the height adjustment of the robotic arm 4.

[0039] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes, but is not limited to, these specific embodiments. All equivalent changes made in accordance with the shape and structure of this utility model are within the protection scope of this utility model.

Claims

1. Force relief device, characterized in that include: The assembly includes a pin assembly (1), a circuit board assembly (2), and a cover (3). The circuit board assembly (2) is disposed between the pin assembly (1) and the cover (3). The circuit board assembly (2) includes a circuit board (21), a battery compartment (22), and a battery (23). The battery (23) is disposed on the first side of the circuit board (21) through the battery compartment (22). A touch sensing area (211) is provided on the second side of the circuit board (21). The pin assembly (1) is disposed on the second side of the circuit board (21), and a touch part (11) is provided on the side of the pin assembly (1) away from the cover (3). The position of the touch part (11) corresponds to the position of the touch sensing area (211).

2. The force relief device of claim 1, wherein, The touch sensing area (211) is located at the upper and lower ends of the second side of the circuit board (21).

3. Force relief device according to claim 1 or 2, characterized in that The pin assembly (1) includes a pin handle (12), a pin mounting base (13), and a pin (14), wherein the pin (14) is mounted in the pin handle (12) via the pin mounting base (13).

4. The force relief device of claim 3, wherein, The pin mounting base (13) is located in the middle of the side of the pin handle (12) away from the cover (3).

5. The force relief device of claim 3, wherein, One end of the pin (14) is provided with a retaining ring (141), and the other end of the pin (14) is provided with a movable end (142). The pin mounting base (13) is provided with a through hole (131) at one end near the pin handle (12). The retaining ring (141) is stopped in the pin mounting base (13), and the movable end (142) passes through the through hole (131).

6. The force relief device of claim 5, wherein, Both the through hole (131) and the movable end (142) are provided with a limiting plane (15).

7. The force relief device of claim 3, wherein, The middle part of the pin handle (12) is provided with a pin mounting cavity (121), and a spring (122) is provided in the pin mounting cavity (121). The pin mounting seat (13) is slidably disposed in the pin mounting cavity (121), and the spring (122) is sleeved between the pin mounting seat (13) and the pin (14).

8. The force relief device of claim 7, wherein, The pin mounting cavity (121) is also provided with a guide rail (123), and the pin mounting seat (13) is slidably connected to the pin mounting cavity (121) through the guide rail (123).

9. The force relief device of claim 7, wherein, The pin (14) has a first fixing hole (143) at one end near the pin handle (12), and a second fixing hole (124) is provided in the pin mounting cavity (121). The pin handle (12) passes through the second fixing hole (124) and the first fixing hole (143) through the fixing member (16) and is fixedly connected to the pin (14).

10. A mechanical arm for fitness equipment, characterized by, It includes the force relief protection device as described in any one of claims 1 to 9, and includes a robotic arm (4) and a robotic arm fixing assembly (5), wherein the pin assembly (1) is inserted through the robotic arm fixing assembly (5), and the robotic arm fixing assembly (5) is connected to the robotic arm (4).