A torsion spring self-twisting mounting auxiliary tool
Patent Information
- Application Number
- CN202522278902.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-28
AI Technical Summary
这种扭曲方式无专用定位结构，人工凭经验控制扭转角度，易出现过扭（弹簧塑性变形失效）或欠扭（弹簧弹力不足，铰接件无法正常复位），扭转精度差，装配质量不稳定
这种扭力弹簧自扭曲挂载辅助工装通过圆柱状扭头的插柱、环形凹槽、条形卡槽形成三重定位：插柱插入套筒件确保扭转中心不偏移，环形凹槽容纳扭力弹簧端部限制径向窜动，条形卡槽卡合L形第二扭臂的直边引导扭转轨迹；人工转动扭转手柄时，仅需绕套筒件旋转180°即可完成扭转，提高扭转精度和装配质量；再配合固定手柄通过插孔卡接第二扭臂后并压持套筒件，快速限位扭转后的第二扭臂，可长期保持扭力弹簧180°扭转状态（无需人工持续施力），操作人员可腾出双手进行后续步骤的操作，解决现有一手扭弹簧、一手装配件的操作冲突。
Smart Images
Figure CN224751229U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automotive parts installation equipment, and in particular to a torsion spring self-torsion mounting auxiliary tooling. Background Technology
[0002] Currently, many automotive parts rely on torsion springs to achieve functions such as hinge rotation and reset, angle positioning, and shock absorption. Automotive parts typically have sleeves in which the torsion spring is installed. The torsion spring has a first torsion arm and a second torsion arm at each end, with the second torsion arm being L-shaped. In the uninstalled state, the first and second torsion arms face the same direction, with the straight edge of the outer side of the L-shaped second torsion arm facing the first torsion arm. The sleeve has a strip-shaped notch parallel to its axial direction. When the torsion spring is installed in the sleeve, the first torsion arm of the torsion spring is positioned within the strip-shaped notch and abuts against its edge. Currently, during the self-twisting process of the second torsion arm, manual twisting by hand or pliers is often used. This twisting method lacks a dedicated positioning structure, and manual control of the twisting angle relies on experience, easily leading to over-twisting (spring plastic deformation failure) or under-twisting (insufficient spring force, hinge cannot reset properly), resulting in poor twisting accuracy and unstable assembly quality. Utility Model Content
[0003] The problem to be solved by this utility model is to provide a self-twisting mounting auxiliary tooling for torsion springs. This tooling can stably position the torsion springs that have been twisted, thereby improving the torsion accuracy and assembly quality.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A torsion spring self-torsion mounting auxiliary tooling is characterized by comprising a torsion handle and a fixed handle; the end of the torsion handle is provided with a cylindrical torsion head, and a circular plane of the cylindrical torsion head is provided with a post, an annular groove and a strip slot distributed sequentially from the center outwards. The post is perpendicular to the circular plane of the cylindrical torsion head, the annular groove is located on the outer periphery of the post and can accommodate the end of the torsion spring, the strip slot is tangent to and connected to the annular groove, and the openings of the strip slot and the annular groove face the extension direction of the post; both ends of the strip slot have openings for the second torsion arm of the torsion spring to pass through; the end of the fixed handle is provided with a insertion hole for the second torsion arm of the torsion spring to be inserted, and the axis of the insertion hole is perpendicular to the length direction of the fixed handle.
[0005] Typically, the cylindrical toggle head described above has a circumferential surface and two circular planes.
[0006] When the torsion spring is installed in the sleeve, the first torsion arm of the torsion spring is in the strip notch and abuts against the edge of the strip notch; at the same time, the second torsion arm of the torsion spring is on the outside of the sleeve. The operator holds the torsion handle and aligns the post of the cylindrical torsion head with the end of the second torsion arm of the torsion spring in the sleeve, so that the post of the cylindrical torsion head is inserted into the sleeve. The end of the torsion spring is in the annular groove, and the straight edge of the inner side of the L-shaped second torsion arm is in the strip groove and passes through the opening at one end of the strip groove. Then, the operator turns the torsion handle by hand, so that the torsion handle rotates 180° around the sleeve, causing the second torsion arm of the torsion spring to twist 180° accordingly, realizing the self-twisting of the second torsion arm of the torsion spring.
[0007] When the second torsion arm of the torsion spring is rotated 180° by the rotation of the torsion handle, the second torsion arm of the torsion spring faces the opposite direction to the first torsion arm. The operator uses their other hand to hold the fixed handle and inserts the insertion hole at the end of the fixed handle into the straight edge of the outer side of the second torsion arm of the torsion spring. The second torsion arm of the torsion spring is then mounted on the fixed handle, which presses against the sleeve. Finally, the operator can remove the torsion handle from the second torsion arm of the torsion spring. Because the fixed handle presses against the sleeve, it can stably limit the second torsion arm of the torsion spring after it is rotated, always maintaining its 180° torsion state (preventing spring rebound). The operator can then free up both hands to focus on the subsequent hinge assembly of the two hinge parts (such as inserting the hinge shaft into the sleeve and tightening the fixing bolts), without the need for additional personnel to assist in fixing the spring, allowing a single person to complete the entire process of torsion, limiting, and assembly.
[0008] In a preferred embodiment, the opening edges at both ends of the strip-shaped slot are provided with locking blocks that can engage with the second torsion arm of the torsion spring. The locking blocks can form a retaining edge to limit the L-shaped second torsion arm from one side of the opening of the strip-shaped slot, preventing the torsion arm from sliding out of the slot opening due to the spring force during the twisting process (especially when rotating to 180°).
[0009] In a preferred embodiment, the end of the torsion handle is welded to the circumferential surface of the cylindrical torsion head; or the end of the torsion handle is welded to another circular plane of the cylindrical torsion head.
[0010] In a preferred embodiment, the end of the fixed handle is provided with a pressure block, which is located in the axial extension direction of the insertion hole. The pressure block increases the clamping weight of the fixed handle on the sleeve and torsion spring, while also increasing the contact area, improving the clamping stability, and preventing the torsion spring from rebounding.
[0011] In a further preferred embodiment, the pressure block is integrally connected to the end of the fixed handle. This design eliminates the need for separate processing and assembly of the pressure block, reducing production steps and lowering tooling manufacturing costs.
[0012] In a further preferred embodiment, the thickness of the pressure block is the same as the thickness of the end of the fixed handle. The consistent thickness of the pressure block and the end of the fixed handle ensures that the pressure block at the end of the fixed handle is stably pressed against the sleeve.
[0013] Compared with the prior art, this utility model has the following advantages: This torsion spring self-torsion mounting auxiliary tooling uses a cylindrical torsion head with a post, an annular groove, and a strip-shaped slot to form a triple positioning system: the post inserts into the sleeve to ensure the torsion center does not shift; the annular groove accommodates the end of the torsion spring to limit radial movement; and the strip-shaped slot engages the straight edge of the L-shaped second torsion arm to guide the torsion trajectory. When manually turning the torsion handle, only a 180° rotation around the sleeve is needed to complete the torsion, improving torsion accuracy and assembly quality. Furthermore, by using a fixed handle to engage the second torsion arm through the insertion hole and press against the sleeve, the second torsion arm is quickly and precisely positioned, maintaining the torsion spring in a 180° torsion state for an extended period (without requiring continuous manual force). This frees up the operator's hands for subsequent operations, resolving the operational conflict of twisting the spring with one hand and assembling the parts with the other. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model; Figure 2 yes Figure 1 Schematic diagram of the structure of the central torsion handle; Figure 3 yes Figure 1 A schematic diagram of the structure of the torsion handle and the torsion spring; Figure 4 This is a schematic diagram of the structure of the fixed handle and the torsion spring in a specific embodiment of this utility model. Detailed Implementation
[0015] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0016] like Figure 1-4As shown, the torsion spring self-torsion mounting auxiliary tooling in this embodiment includes a torsion handle 1 and a fixed handle 2. The end of the torsion handle 1 is provided with a cylindrical torsion head 11. On a circular plane of the cylindrical torsion head 11, there are a post 12, an annular groove 13 and a strip groove 14 distributed sequentially from the center to the outside. The post 12 is perpendicular to the circular plane of the cylindrical torsion head 11. The annular groove 13 is located on the outer periphery of the post 12 and can accommodate the end of the torsion spring 3. The strip groove 14 is tangent to and connected to the annular groove 13. The openings of the strip groove 14 and the annular groove 13 are both facing the extension direction of the post 12. Both ends of the strip groove 14 have openings 141 for the second torsion arm 32 of the torsion spring 3 to pass through. The end of the fixed handle 2 is provided with a insertion hole 21 for the second torsion arm 32 of the torsion spring 3 to be inserted. The axial direction of the insertion hole 21 is perpendicular to the length direction of the fixed handle 2.
[0017] Typically, the cylindrical toggle head 11 described above has a circumferential surface and two circular planes.
[0018] The torsion spring 3 has a first torsion arm 31 and a second torsion arm 32 at its two ends. The second torsion arm 32 is L-shaped. In the uninstalled state, the first torsion arm 31 and the second torsion arm 32 face the same direction. The straight edge of the outer side of the L-shaped second torsion arm 32 faces the first torsion arm 31. The sleeve 4 is provided with a strip-shaped notch 41 that is parallel to the axial direction of the sleeve 4. When the torsion spring 3 is installed in the sleeve 4, the first torsion arm 31 of the torsion spring 3 is in the strip notch 41 and abuts against the edge of the strip notch 41; at the same time, the second torsion arm 32 of the torsion spring 3 is on the outside of the sleeve 4. The operator holds the torsion handle 1 and aligns the post 12 of the cylindrical torsion head 11 with the end of the second torsion arm 32 of the torsion spring 3 in the sleeve 4, so that the post 12 of the cylindrical torsion head 11 is inserted into the sleeve 4. The end of the torsion spring 3 is in the annular groove 13, and the straight edge of the inner side of the L-shaped second torsion arm 32 is in the strip groove 14 and passes through the opening 141 at one end of the strip groove 14. Then, the operator rotates the torsion handle 1 by hand, so that the torsion handle 1 rotates 180° around the sleeve 4, causing the second torsion arm 32 of the torsion spring 3 to twist 180°, thereby realizing the self-twisting of the second torsion arm 32 of the torsion spring 3.
[0019] When the second torsion arm 32 of the torsion spring 3 is rotated 180° by the rotation of the torsion handle 1, the second torsion arm 32 of the torsion spring 3 faces opposite to the first torsion arm 31. The operator holds the fixing handle 2 with the other hand and inserts the insertion hole 21 at the end of the fixing handle 2 into the straight edge of the outer side of the second torsion arm 32 of the torsion spring 3. The second torsion arm 32 of the torsion spring 3 is then mounted on the fixing handle 2, which presses against the sleeve 4. Finally, the operator can remove the torsion handle 1 from the second torsion arm 32 of the torsion spring 3. Because the fixing handle 2 is pressed against the sleeve 4, it can stably limit the second torsion arm 32 of the torsion spring 3 after it is rotated, always maintaining its 180° torsion state (preventing spring rebound). The operator can free up both hands to focus on the subsequent hinge assembly of the two hinge parts (such as inserting the hinge shaft into the sleeve 4 and tightening the fixing bolts), without the need for additional personnel to assist in fixing the spring, thus enabling a single person to complete the entire process of torsion, limiting, and assembly.
[0020] The openings 141 at both ends of the strip-shaped slot 14 are provided with locking blocks 142 that can engage with the second torsion arm 32 of the torsion spring 3. The locking blocks 142 can form a retaining edge limit on the L-shaped second torsion arm 32 from one side of the opening 141 of the strip-shaped slot 14, preventing the torsion arm from sliding out of the slot opening 141 due to the spring force during the torsion process (especially when rotating to 180°).
[0021] The end of the twist handle 1 is welded to the circumferential surface of the cylindrical twist head 11.
[0022] The end of the fixed handle 2 is provided with a pressure block 22, which is located in the axial extension direction of the insertion hole 21. The pressure block 22 can increase the clamping weight of the fixed handle 2 on the sleeve 4 and the torsion spring 3, while increasing the contact area, improving the clamping stability, and preventing the torsion spring 3 from rebounding.
[0023] The pressure block 22 is integrally connected to the end of the fixed handle 2. With this configuration, there is no need to separately process and assemble the pressure block 22, reducing production steps and tooling manufacturing costs.
[0024] The thickness of the pressure block 22 is the same as the thickness of the end of the fixed handle 2. The pressure block 22 with the same thickness as the end of the fixed handle 2 can ensure that the pressure block 22 at the end of the fixed handle 2 is stably pressed on the sleeve 4.
[0025] Furthermore, it should be noted that the names of the various parts of the specific embodiments described in this specification may differ. All equivalent or simple variations made to the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, they should all fall within the protection scope of this utility model.
Claims
1. A torsion spring self-torsion mounting auxiliary tooling, characterized in that: It includes a torsion handle and a fixed handle; the end of the torsion handle is provided with a cylindrical torsion head, and a circular plane of the cylindrical torsion head is provided with a post, an annular groove and a strip slot distributed sequentially from the center to the outside. The post is perpendicular to the circular plane of the cylindrical torsion head. The annular groove is located on the outer periphery of the post and can accommodate the end of the torsion spring. The strip slot is tangent to and connected to the annular groove. The openings of the strip slot and the annular groove face the extension direction of the post. Both ends of the strip slot have openings for the second torsion arm of the torsion spring to pass through. The end of the fixed handle is provided with a socket for the second torsion arm of the torsion spring to be inserted. The axis of the socket is perpendicular to the length direction of the fixed handle.
2. The torsion spring self-torsion mounting auxiliary tooling as described in claim 1, characterized in that: The opening edges at both ends of the strip slot are provided with locking blocks that can engage with the second torsion arm of the torsion spring.
3. The torsion spring self-torsion mounting auxiliary tooling as described in claim 1, characterized in that: The end of the torsion handle is welded to the circumferential surface of the cylindrical torsion head; or the end of the torsion handle is welded to another circular plane of the cylindrical torsion head.
4. The torsion spring self-torsion mounting auxiliary tooling as described in claim 1, characterized in that: The end of the fixed handle is provided with a pressure block, which is located in the axial extension direction of the insertion hole.
5. The torsion spring self-torsion mounting auxiliary tooling as described in claim 4, characterized in that: The pressure block is integrally connected to the end of the fixed handle.
6. The torsion spring self-torsion mounting auxiliary tooling as described in claim 5, characterized in that: The thickness of the pressure block is the same as the thickness of the end of the fixed handle.