Automobile seat backrest shoulder support structure welding tool
By designing welding tooling for lower support structure and upper pressure structure, the positioning accuracy and stability of the shoulder bracket structure of the car seat back is solved, and high-precision and firm welding effect is achieved.
Patent Information
- Application Number
- CN202422067458.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-26
AI Technical Summary
In the prior art, the positioning accuracy and stability of the shoulder bracket structure of the car seat back are difficult to ensure, especially during the welding process, common positioning tools are difficult to meet the positioning requirements of their complex shapes.
A welding tool including a lower support structure and an upper pressure structure is designed. Through components such as limit support blocks, limit press blocks, clamps and distance measuring sensors, precise positioning and stable clamping of bracket components is achieved, ensuring the accurate and firm positional relationship during the welding process.
The welding quality of the car seat back shoulder bracket structure is improved, the positioning accuracy and stability are ensured, and the overall welding effect is improved.
Smart Images
Figure CN223289235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding tooling, in particular to a welding tooling for a shoulder bracket structure of a car seat backrest. Background Art
[0002] A ram's horn-shaped shoulder pad structure is often provided on the shoulder of the car seat back. A bracket structure made of multiple welded steel wires is provided inside the shoulder pad, and a ram's horn sponge is provided on the outside. Since the steel wires constituting the bracket structure have been pre-bent to form a complex multi-bend structure, it is difficult to ensure positioning accuracy and clamping stability using common positioning tooling. In addition, the bracket structure needs to be directly welded to the skeleton assembly of the backrest structure to ensure the firmness and stability of the overall structure, which further increases the difficulty of positioning and clamping. Summary of the Invention
[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a welding tool for the shoulder bracket structure of a car seat backrest, which solves the problem that it is difficult to ensure welding accuracy and stability when welding a shoulder bracket structure with a special structure relative to the backrest structure.
[0004] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a welding tool for the shoulder bracket structure of a car seat backrest, including a lower support structure and an upper pressure structure, the lower support structure is provided with a plurality of limit support blocks, a plurality of lower clamping blocks and a positioning support block, the limit support block and the lower clamping block are both provided with a lower limit groove, the lower side bracket component is clamped in the lower limit groove; the upper pressure structure is provided with a plurality of limit pressure blocks, a plurality of upper clamping blocks and a positioning pressure block, the limit pressure block is provided with an upper limit groove, the upper side bracket component is clamped in the upper limit groove; the upper clamping block and the lower clamping block clamp the lower side bracket component; the limit support block limits the lower side bracket component to be in contact with the lower side of the backrest structure, the limit pressure block limits the upper side bracket component to be in contact with the upper side of the backrest structure, and the positioning support block and the positioning pressure block cooperate to clamp the joint between the lower side bracket component and the upper side bracket component.
[0005] Furthermore, the positioning support block and the positioning pressing block clamp the middle portion of the joint between the lower support component and the upper support component.
[0006] Furthermore, the clamping surfaces of the positioning support block and the positioning pressure block are both provided with two positioning profiles, and the two positioning profiles are respectively adapted to fit with the lower support component and the upper support component.
[0007] Furthermore, a distance measuring sensor is provided between the adjacent limiting support block and the lower clamping block.
[0008] Furthermore, the upper limit groove and the lower limit groove are both double-ended groove bodies, the groove width of which is adapted to the diameter of the lower support component, and the groove depth of which is between the radius and diameter of the lower support component.
[0009] Furthermore, the clamping surface of the upper clamping block is provided with a clamping limiting groove, and the clamping limiting groove has a trapezoidal cross-section groove, and its groove bottom width is smaller than its groove opening width.
[0010] Beneficial effects: The utility model provides a welding tool for the shoulder bracket structure of a car seat backrest. The lower bracket component is first positioned by the lower supporting structure, and the backrest structure is then positioned by the lower bracket component and the lower supporting structure. The upper bracket component is then positioned by the lower supporting structure and the backrest structure. Finally, the three are re-limited and clamped by the upper pressure structure to ensure that the relative position relationship of the three is accurate and relatively fixed, so as to ensure the welding quality of the shoulder bracket structure of the backrest. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a structural diagram of the lower support structure of an embodiment of the utility model;
[0012] Figure 2 This is a structural diagram of an upper pressure structure according to an embodiment of the present utility model;
[0013] Figure 3 It is a schematic diagram of the cross-sectional structure of the lower bracket component clamped by the lower clamping block and the upper clamping block;
[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the joint between the positioning support block and the positioning pressure block clamping the upper and lower bracket components. DETAILED DESCRIPTION
[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] As attached Figure 1-4The welding tooling of the shoulder bracket structure of a car seat backrest comprises a lower supporting structure and an upper pressing structure, wherein the lower supporting structure is provided with a plurality of limiting support blocks 1, a plurality of lower clamping blocks 2 and a positioning support block 3, the limiting support block 1 and the lower clamping block 2 are both provided with a lower limiting groove 12, and the lower side bracket component 11 is clamped in the lower limiting groove 12; the upper pressing structure is provided with a plurality of limiting pressure blocks 4, a plurality of upper clamping blocks 5 and a positioning pressure block 6, the limiting pressure block 4 is provided with an upper limit groove, and the upper side bracket component 14 is clamped in the upper limit groove; the upper clamping block 5 and the lower clamping block 2 clamp the lower side bracket component 11; the limiting support block 1 limits the lower side bracket component 11 to be in contact with the lower side of the backrest structure, the limiting pressure block 4 limits the upper side bracket component 14 to be in contact with the upper side of the backrest structure, and the positioning support block 3 cooperates with the positioning pressure block 6 to clamp the joint between the lower side bracket component 11 and the upper side bracket component 14.
[0017] In this solution, the directional terms "up" and "down" are used only to express the relative position of the various tooling modules and bracket components relative to the backrest structure during welding. The shoulder bracket structure is primarily composed of two bracket components, one end of which is welded to the other end, and the other end is welded to two opposing surfaces of the backrest structure, forming a stable spatial triangular structure similar to a ram's horn, which provides stable internal support for the ram's horn sponge. In the welding solution, the backrest structure skeleton assembly is placed flat and fixed, and the two bracket components are welded to the upper and lower surfaces of the backrest structure respectively.
[0018] First, the lower support component is positioned and limited by multiple lower limit grooves and lower positioning blocks, and then the backrest structure is positioned and installed so that it fits with the welding part of the lower support component. Generally, a groove that is compatible with the end of the steel wire will be pre-formed on the surface of the backrest structure; the upper end face of the limit support block can be set to a positioning surface that is compatible with the surface of the backrest structure, so as to improve the positioning accuracy of the backrest structure, thereby improving its matching accuracy with the lower support component, so that the limit support block plays a role in constraining the corresponding position of the lower support component and the lower side surface of the backrest structure to be limited and fitted with high precision.
[0019] Similarly, the limiting pressure block constrains the upper bracket component to a high-precision fit with the upper profile of the backrest structure. After the skeleton structure is positioned and fixed, the upper bracket component is positioned relative to the lower bracket component and the backrest structure. Finally, the upper pressure structure is fully pressed together to achieve complete positioning and clamping of the upper and lower bracket structures and the backrest structure, achieving high positioning accuracy and secure clamping.
[0020] The limiting pressure block 4, the upper clamping block 5 and the positioning pressure block 6 are all connected to the rocker arm 8 through the connecting block 7. Through different relative position installation combinations, the positioning and fixation of bracket components of different shapes can be met. The rocker arm 8 is connected to the driving cylinder 9, which drives it to swing through the driving cylinder 9, thereby driving the upper pressure module away from or close to the lower support structure.
[0021] In one embodiment, both the upper and lower support members are steel wires with circular cross-sections. In terms of shape, both have mating segments of equal length for mutual engagement. A significant bend is located at each end of the mating segments, while other sections have varying degrees of bends. During welding, the ends of the steel wires must be welded to the backrest structure.
[0022] The positioning support block 3 and the positioning pressure block 6 clamp the middle portion of the joint between the lower support component 11 and the upper support component 14. During subsequent welding, the two steel wires are first welded to the joint surface of the backrest structure. Then, spot welds are performed on both sides of the clamping area between the positioning support block and the positioning pressure block. After the relative positions of the welds are determined, the positioning support block and the positioning pressure block are removed, and welding is performed between the two spot welds to complete the entire welding process.
[0023] The clamping surfaces of both the positioning support block 3 and the positioning pressure block 6 are provided with two positioning profiles, which respectively mate with the lower support component 11 and the upper support component 14. This facilitates more stable clamping and maintains the relative position of the two support components at their joints, ensuring weld quality. Furthermore, when positioning and installing the upper support component, the positioning profiles on the backrest structure are used to determine the end position of the upper support component, and the positioning profiles on the positioning support block are used to determine its position relative to the lower support component. The upper pressure structure then further limits and compresses the upper support component, achieving precise positioning and fixation.
[0024] A distance measuring sensor 10 is provided between the adjacent limiting support block 1 and the lower clamping block 2. By performing a position detection here to ensure that the lower bracket component is relatively installed in place, the positioning and installation of the backrest structure can be ensured to be correct, and the matching relationship between the lower bracket component and the backrest assembly can be ensured to be correct. After confirming that these two points are correct, the positioning and installation of the upper bracket component is determined relative to these two points, thereby ensuring the accurate positioning of the upper bracket component.
[0025] The upper limit groove and the lower limit groove 12 are both double-ended grooves, with their width matching the diameter of the lower support component 11, and their depth ranging from the radius to the diameter of the lower support component 11. After the steel wire is inserted into the limit groove, it fits in with the three inner walls, achieving the purpose of multi-directional positioning. A small portion of the arc surface is exposed at the groove opening. Preferably, the exposed portion fits in with the positioning profile on the backrest structure, so that the groove end faces of the limiting support block and the limiting pressure block can fit in with the surface profile of the backrest structure, further ensuring the positioning accuracy and stability.
[0026] The clamping surface of the upper clamping block 5 is provided with a clamping limit groove 13. The clamping limit groove 13 has a trapezoidal cross-section, and the bottom width of the groove is smaller than the width of the groove top. The inclined groove surface in the clamping limit groove applies pressure to the lower bracket component, which cooperates with the lower limit groove. That is, in the diameter direction of the circular cross-section of the steel wire, a flat surface and a right angle cooperate to clamp it, making the clamping more secure and reliable.
[0027] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A welding tool for the shoulder support structure of a car seat backrest, characterized by: The invention comprises a lower supporting structure and an upper pressing structure, wherein the lower supporting structure is provided with a plurality of limiting support blocks (1), a plurality of lower clamping blocks (2) and a positioning support block (3), the limiting support block (1) and the lower clamping block (2) are both provided with a lower limiting groove (12), and a lower side bracket component (11) is clamped in the lower limiting groove (12); the upper pressing structure is provided with a plurality of limiting pressure blocks (4), a plurality of upper clamping blocks (5) and a positioning pressure block (6), the limiting pressure block (4) is provided with an upper limit groove, and the upper limit groove An upper bracket component (14) is clamped inside; the upper clamping block (5) and the lower clamping block (2) clamp the lower bracket component (11); the limiting support block (1) limits the lower bracket component (11) from being in contact with the lower side of the backrest structure; the limiting pressure block (4) limits the upper bracket component (14) from being in contact with the upper side of the backrest structure; the positioning support block (3) and the positioning pressure block (6) cooperate to clamp the contact portion between the lower bracket component (11) and the upper bracket component (14).
2. The welding tool for the shoulder support structure of the automobile seat backrest according to claim 1, characterized in that: The positioning support block (3) and the positioning pressing block (6) clamp the middle portion of the joint between the lower support component (11) and the upper support component (14).
3. The welding tool for the shoulder support structure of the automobile seat backrest according to claim 2, characterized in that: The clamping surfaces of the positioning support block (3) and the positioning pressure block (6) are both provided with two positioning profiles, and the two positioning profiles are respectively adapted to fit with the lower support component (11) and the upper support component (14).
4. The welding tool for the shoulder support structure of the automobile seat backrest according to claim 3, characterized in that: A distance sensor (10) is provided between the adjacent limiting support block (1) and the lower clamping block (2).
5. The welding tool for the shoulder support structure of the automobile seat backrest according to claim 4, characterized in that: The upper limit groove and the lower limit groove (12) are both double-ended groove bodies, the groove width of which is adapted to the diameter of the lower support component (11), and the groove depth of which is between the radius and diameter of the lower support component (11).
6. The welding tool for the shoulder support structure of the automobile seat backrest according to claim 5, characterized in that: The clamping surface of the upper clamping block (5) is provided with a clamping limit groove (13), and the clamping limit groove (13) has a trapezoidal cross-section groove, and its groove bottom width is smaller than its groove opening width.