Multifunctional buckle and design method thereof

By designing multi-function snaps, combined with snap structure, limit wall, reinforced guide and limit functions of snaps are realized, and the problem of single existing snaps are solved. , simplifies assembly operations and reduces costs.

CN119481782APending Publication Date: 2025-02-18FUSHENGMEIDA ELECTRICAL APPLIANCES (CHANGCHUN) CO LTD
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Patent Information

Application Number
CN202411425753.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-14
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

The existing snap function is single, and the diversity functions are not realized, making it difficult to achieve pre-fixation, anti-turning, strengthening guidance and limiting functions at the same time.

Method used

Design a multi-functional snap buckle, including a snap structure, a snap body, a limit wall, a reinforced guide part, a snap joint part and a support part. Through structural optimization and multi-functional design, the snap buckle is pre-fixed, anti-rotation, Strengthen guidance and limiting functions.

Benefits of technology

The versatility of the snaps is achieved, the assembly operation is simplified, and the cost is reduced, and the stability and strength of the snaps are improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a multifunctional buckle and a design method thereof, the buckle comprises a buckle structure integrally formed with a plastic support, and the buckle structure is composed of a buckle body and a limiting wall connected with the buckle body; u-shaped grooves are formed in the two sides of the buckle body, two L-shaped limiting structures are further arranged on the limiting wall, the buckle body comprises a reinforcing guide part, a clamping part and a supporting part, the clamping part is matched with another buckle arranged on the plastic support, a copper bar can be pre-fixed to the plastic support, the plastic support is provided with a copper bar installation face, and the copper bar installation face is provided with a clamping groove. A positioning column is further arranged on the side, close to the buckle body, of the installation face, two U-shaped grooves are formed in the plastic support and used for supporting the OT terminal of the wire harness, and an L-shaped limiting structure on the limiting wall can play a role in limiting rotation of the OT terminal and generating large displacement. According to the multifunctional buckle, the multiple functions of pre-fixing, rotation prevention, guiding reinforcement, limiting and the like of the buckle can be achieved at the same time, and the purposes of simplifying assembling operation and reducing cost are achieved through structural optimization and multifunctional design.
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Description

Technical Field

[0001] The invention belongs to the technical field of assembly fixing and limiting, and in particular relates to a multifunctional buckle and a design method thereof. Background Art

[0002] Buckles are a common structure for connecting and fixing plastic parts. They can tightly connect two or more parts together to form a stable overall structure. This connection method is not only convenient and fast, but also ensures the firmness and stability of the connection. However, in the prior art, buckles mostly play a fixing function, and their functions are single, and the diverse functions of buckles are not realized. Based on this, it is necessary to develop a multifunctional buckle to effectively solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a low-cost multifunctional buckle, and also to provide a design method for the multifunctional buckle, so as to solve the problem that the buckle has the functions of pre-fixation, anti-rotation, enhanced guidance and limiting at the same time.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A multifunctional buckle, comprising a buckle structure, wherein the buckle structure is arranged on one side of a plastic bracket 6 and is integrally formed with the plastic bracket 6;

[0006] The buckle structure is composed of a buckle body and a limiting wall connected thereto; the buckle body is located in the middle of the buckle structure, and includes a reinforcing guide portion 1 arranged at the top and a clamping portion 2 arranged in the middle; the clamping portion 2 cooperates with another buckle arranged on the plastic bracket 6, and can pre-fix the copper bar 5 on the plastic bracket 6; a guide area 7 is also provided above the clamping portion of the buckle body; two limiting structures are provided on the limiting wall;

[0007] The plastic bracket 6 is provided with a mounting surface for the copper busbar 5, two threaded connection holes are opened in the middle of the mounting surface, and a positioning column is also provided on the mounting surface; the plastic bracket 6 is also provided with two U-shaped grooves for supporting the wires connected to the wiring harness OT terminal 4; the wires are located between the OT terminal 4 and the mounting surface, and are fixed to the mounting surface with the OT terminal 4 by screws.

[0008] Furthermore, the limiting wall and the plastic bracket 6 are integrally formed by injection molding.

[0009] Furthermore, U-shaped grooves are provided on both sides of the buckle body at the connection position between the limiting wall and the buckle body.

[0010] Furthermore, the limiting structure is L-shaped and is respectively arranged on the top of both sides of the limiting wall.

[0011] Furthermore, the buckle body also includes a supporting portion located at the back for supporting the buckle.

[0012] Furthermore, the reinforcing guide portion 1, the guide area 7, the clamping portion 2, the supporting portion 3, the vertical structure connecting the reinforcing guide portion 1 and the guide area 7 and the vertical structure below the clamping portion 2 are all integrally formed by injection molding.

[0013] Furthermore, the positioning column is close to the buckle body and is integrally formed with the mounting surface.

[0014] Furthermore, the OT terminal 4 can be supported on the limiting structure of the limiting wall.

[0015] A design method for a multifunctional buckle comprises the following steps:

[0016] A. Pre-fixed functional structure design:

[0017] A snap-fitting portion 2 for pre-fixing the copper busbar 5 is provided on the snap-fitting structure. The snap-fitting portion 2 is located in the middle of the snap-fitting body of the snap-fitting structure. The snap-fitting portion 2 cooperates with another snap-fitting portion provided on the plastic bracket 6, so that the copper busbar 5 can be pre-fixed on the plastic bracket 6.

[0018] B. Anti-rotation functional structure design:

[0019] Positioning posts are provided on the mounting surface of the plastic bracket 6 to limit movement in the X and Y directions, and two U-shaped grooves are opened on the limiting walls on both sides of the buckle body while widening the plastic bracket 6;

[0020] C. Strengthen the design of guiding function structure:

[0021] A reinforcing guide portion 1 is provided above the buckle body for a certain distance, and a guide area 7 is provided in the middle of the buckle body for guiding during assembly;

[0022] F. Limiting function structure design:

[0023] A pair of L-shaped limiting structures are arranged on the limiting walls connected to the plastic bracket (6) on both sides of the buckle body, for limiting the rotation of the OT terminal 4.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a multifunctional buckle and a design method thereof. The multifunctional buckle improves the singleness of the buckle function and can simultaneously realize the buckle's multiple functions such as pre-fixation, anti-rotation, enhanced guidance, and limiting. Through structural optimization and multifunctional design, the purpose of simplifying assembly operations and reducing costs is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a schematic diagram of a buckle structure;

[0028] Figure 2 It is a schematic diagram of the back side of the buckle structure;

[0029] Figure 3 This is a schematic diagram of the assembly of the copper busbar, OT terminal and plastic bracket;

[0030] Figure 4 This is a schematic diagram of the pre-fixing function of the clip on the copper busbar;

[0031] Figure 5 This is a schematic diagram of the buckle limiting the rotation of the copper bar in the Z direction;

[0032] Figure 6 This is a schematic diagram of the slots on the plastic brackets on both sides of the buckle body;

[0033] Figure 7 It is a schematic diagram of the side wall limit of the buckle body.

[0034] In the figure, 1. Reinforced guide part 2. Clamping part 3. Support part 4. OT terminal 5. Copper busbar 6. Plastic bracket 7. Guide area. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with embodiments:

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0038] like Figure 1-Figure 7 As shown, the multifunctional buckle of the present invention comprises a buckle structure, and the buckle structure is arranged on one side of the plastic bracket 6 and is integrally formed with the plastic bracket 6 by injection molding.

[0039] The buckle structure consists of a buckle body and a limiting wall connected thereto.

[0040] At the connection position between the limit wall and the buckle body, U-shaped grooves are provided on both sides of the buckle body to ensure that the considerable stress generated when the buckle is deformed is less than the allowable stress of the material. The limit wall and the plastic bracket 6 are integrally formed by injection molding. Two L-shaped limit structures are also provided on the limit wall to support the OT terminal 4 and limit its movement.

[0041] The buckle body is located in the middle of the buckle structure, and includes a reinforcing guide portion 1, a clamping portion 2 and a supporting portion 3. The reinforcing guide portion 1 is arranged at the top of the buckle body. The present invention extends outwards for a distance above the buckle body, and can provide a guiding effect earlier during the assembly process, facilitating the installation operation.

[0042] The clamping part 2 is located in the middle of the clamping body, and the clamping part 2 cooperates with another clamping part provided on the plastic bracket 6 to pre-fix the copper bar 5 on the plastic bracket 6. In the present invention, the clamping part 2 can pre-fix the copper bar 5, ensuring that the copper bar 5 will not fall off due to movement or rotation during the entire assembly operation.

[0043] The support portion 3 is disposed on the back of the buckle body and is used to support the buckle.

[0044] A guide area 7 is provided above the clamping portion of the buckle body to assist in guiding during assembly.

[0045] The reinforcing guide portion 1, the guide area 7, the clamping portion 2, the supporting portion 3, the vertical structure connecting the reinforcing guide portion 1 and the guide area 7 and the vertical structure below the clamping portion 2 are all integrally formed by injection molding.

[0046] The plastic bracket 6 is provided with a mounting surface for the copper bar 5, which is used to place the copper bar 5 to be installed. Two threaded connection holes are opened in the middle of the mounting surface. A positioning column formed integrally with the mounting surface is also provided on one side of the mounting surface close to the buckle body, which is used to limit movement in the X and Y directions, but cannot limit the rotation of the copper bar 5 in the Z direction. The buckle body of the present invention is made into a relatively wide structure under the condition of ensuring toughness, which can not only improve the strength of the buckle body, but also replace the limiting wall around the copper bar 5, and play a role in limiting the rotation of the copper bar 5 in the Z direction.

[0047] Two U-shaped grooves are provided on the plastic bracket 6 for supporting the wires connected to the wire harness OT terminal 4. The wires are located between the OT terminal 4 and the mounting surface, and are fixed to the mounting surface with the OT terminal 4 by screws.

[0048] In the present invention, a large current passes through the OT terminal 4 of the wiring harness, and rotation is inevitable during the screw assembly operation. In order to avoid the OT terminals 4 contacting each other to cause a short circuit, and to prevent a large displacement from affecting the direction of the wiring harness, the L-shaped limiting structure on the limiting wall can limit the rotation of the OT terminal 4 and produce a large displacement, thereby replacing an additional limiting structure.

[0049] During assembly, first pre-fix the copper busbar 5 on the plastic bracket 6 through the clip body; then fix the OT terminal 4 on the plastic bracket 6 through screws.

[0050] The design method of the multifunctional buckle of the present invention comprises the following steps:

[0051] 1. Pre-fixed functional structure design:

[0052] A snap-fitting portion 2 is provided on the snap-fitting structure, and the snap-fitting portion 2 is located in the middle of the snap-fitting body of the snap-fitting structure. The snap-fitting portion 2 cooperates with another snap-fitting portion provided on the plastic bracket 6, and the copper bar 5 can be pre-fixed on the plastic bracket 6. The copper bar 5 is installed on the plastic bracket 6, and the snap-fitting portion 2 can pre-fix the copper bar 5, ensuring that the copper bar will not fall off due to movement or rotation during the entire assembly operation.

[0053] 2. Anti-rotation functional structure design:

[0054] Positioning posts are arranged on the mounting surface of the plastic bracket 6 to limit movement in the X and Y directions, but cannot limit the rotation of the copper bar 5 in the Z direction. For this reason, the buckle body can be made into a relatively wide structure under the condition of ensuring toughness. Because the buckle can replace the limiting wall, according to the CAE analysis results, the wider the better under the conditions of satisfying the allowable stress and structural space. Not only can the strength of the buckle be improved, but also the limiting wall around the copper bar 5 can be replaced to limit the rotation of the copper bar 5 in the Z direction. In order to ensure that the considerable stress generated when the buckle structure is deformed is less than the allowable stress of the material, U-shaped grooves of corresponding depth are also opened on the limiting walls on both sides of the buckle body. According to the CAE analysis setting, it is necessary to meet the condition of the worst tolerance that the stress generated by the buckle deformation is less than the allowable stress of the material.

[0055] 3. Strengthen the design of guiding function structure:

[0056] A reinforcing guide portion 1 is provided above the buckle body and a guide area 7 is provided in the middle of the buckle body. During the assembly process, a guiding effect can be provided earlier, which facilitates the installation operation.

[0057] 4. Limiting function structure design:

[0058] The OT terminal 4 of the wiring harness carries a large current and will inevitably rotate during the screw assembly operation. In order to prevent the OT terminals 4 from contacting each other and causing a short circuit, and causing a large displacement that affects the direction of the wiring harness, a pair of L-shaped limiting structures are set on the limiting walls connected to the plastic bracket 6 on both sides of the buckle body, which play a role in limiting the rotation of the OT terminal 4 and causing a large displacement, replacing an additional limiting structure.

[0059] The present invention designs a multifunctional buckle, which simultaneously realizes the buckle's multiple functions such as pre-fixation, anti-rotation, enhanced guidance, and limiting. Through structural optimization and multifunctional design, the purpose of simplifying assembly operations and reducing costs is achieved.

[0060] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A multifunctional buckle, characterized in that: It comprises a buckle structure, which is arranged on one side of the plastic bracket (6) and is integrally formed with the plastic bracket (6); The buckle structure is composed of a buckle body and a limiting wall connected thereto; the buckle body is located in the middle of the buckle structure, and comprises a reinforcing guide portion (1) arranged at the top and a clamping portion (2) arranged in the middle; the clamping portion (2) cooperates with another buckle arranged on the plastic bracket (6) to pre-fix the copper busbar (5) on the plastic bracket (6); a guide area (7) is also provided above the clamping portion of the buckle body; and two limiting structures are provided on the limiting wall; The plastic bracket (6) is provided with a mounting surface for the copper busbar (5), two threaded connection holes are provided in the middle of the mounting surface, and a positioning column is also provided on the mounting surface; the plastic bracket (6) is also provided with two U-shaped grooves for supporting the wires connected to the wiring harness OT terminal (4); the wires are located between the OT terminal (4) and the mounting surface, and are fixed to the mounting surface with the OT terminal (4) by screws.

2. A multifunctional buckle according to claim 1, characterized in that: The limiting wall and the plastic bracket (6) are integrally formed by injection molding.

3. A multifunctional buckle according to claim 1, characterized in that: The connection position between the limiting wall and the buckle body is provided with U-shaped grooves on both sides of the buckle body.

4. A multifunctional buckle according to claim 1, characterized in that: The limiting structures are L-shaped and are respectively arranged on the tops of both sides of the limiting walls.

5. The multifunctional buckle according to claim 1, characterized in that: The buckle body also includes a supporting portion located at the back, which is used to support the buckle.

6. A multifunctional buckle according to claim 5, characterized in that: The reinforcing guide portion (1), the guide area (7), the clamping portion (2), the supporting portion (3), the vertical structure connecting the reinforcing guide portion (1) and the guide area (7), and the vertical structure below the clamping portion (2) are all integrally formed by injection molding.

7. The multifunctional buckle according to claim 1, characterized in that: The positioning column is close to the buckle body and is integrally formed with the mounting surface.

8. The multifunctional buckle according to claim 1, characterized in that: The OT terminal (4) can be supported on the limiting structure of the limiting wall.

9. A method for designing a multifunctional buckle, characterized in that: The following steps are involved: A. Pre-fixed functional structure design: A snap-fitting portion (2) for pre-fixing the copper busbar (5) is provided on the snap-fitting structure, the snap-fitting portion (2) being located in the middle of the snap-fitting body of the snap-fitting structure, and the snap-fitting portion (2) cooperates with another snap-fitting portion provided on the plastic bracket (6), so as to pre-fix the copper busbar (5) on the plastic bracket (6); B. Anti-rotation functional structure design: Positioning columns are arranged on the mounting surface of the plastic bracket (6) to limit movement in the X direction and the Y direction, and two U-shaped grooves are opened on the limiting walls on both sides of the buckle body while widening the plastic bracket (6); C. Strengthen the design of guiding function structure: A reinforcing guide portion (1) is provided at a distance extending above the buckle body, and a guide area (7) is provided in the middle of the buckle body for guiding during assembly; F. Limiting function structure design: A pair of L-shaped limiting structures are arranged on limiting walls connected to the plastic bracket (6) on both sides of the buckle body, for limiting the rotation of the OT terminal (4).