A type of plastic buckle

Abstract

This utility model relates to the technical field of automotive parts and discloses a plastic buckle, including a buckle body. The buckle body includes an inner snap-fit ​​cavity and an outer connecting surface. The inner snap-fit ​​cavity includes a snap-fit ​​portion and a fastening portion. The snap-fit ​​portion includes two mirror-arranged first snap-fit ​​members and second snap-fit ​​members. The second snap-fit ​​member includes a second snap-fit ​​panel and a second snap-fit ​​structure disposed on the second snap-fit ​​panel. The first snap-fit ​​portion and the second snap-fit ​​portion are arranged in parallel. The fastening portion includes two mirror-arranged first fasteners and second fasteners. In the relaxed state, the first fasteners and the second fasteners are in contact without gaps. The connecting surface includes an upper end and a lower end integrally connected to the upper end. The snap-fit ​​portion is disposed on the inner sidewall of the upper end, and the fastening portion is disposed on the inner sidewall of the lower end.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive parts, specifically to a plastic buckle. Background Technology

[0002] In the automotive manufacturing industry, fasteners are key components ensuring the secure connection of various parts, and their performance directly affects the safety, reliability, and overall quality of a vehicle. Traditional automotive fasteners are mostly made of metals, such as steel and aluminum alloys. Metal fasteners, due to their high strength, high hardness, and good heat resistance, have long dominated automotive manufacturing, widely used in connections of critical parts such as engines, chassis, and bodies. However, with the rapid development of the automotive industry and the continuous improvement of vehicle performance requirements, the limitations of traditional metal fasteners have gradually become apparent. Regarding corrosion resistance, vehicles inevitably come into contact with various complex environments during daily use, such as humid air, rainwater, salt, and various chemicals. Metal fasteners are prone to corrosion in these environments. Once corrosion occurs, it not only reduces the mechanical properties of the fasteners, leading to loose connections and affecting the safety and reliability of the vehicle, but also increases maintenance costs and repair frequency.

[0003] From a manufacturing cost perspective, metal materials are relatively expensive, especially some high-performance metal materials. Furthermore, the processing of metal fasteners is usually complex, requiring multiple steps such as forging, stamping, cutting, and heat treatment, which not only increases processing costs but also reduces production efficiency. In addition, the assembly of metal fasteners often requires specialized tools and equipment, increasing assembly costs and difficulty. Based on these shortcomings of traditional metal fasteners, plastic fasteners have emerged and are gradually being used in the automotive industry. Plastic fasteners use high-performance engineering plastics as raw materials, such as polyetheretherketone (PEEK), polyphenylene sulfide (PPS), and polyamide (PA). These high-performance engineering plastics possess a range of excellent properties that effectively compensate for the shortcomings of metal fasteners; therefore, a plastic clip needs to be designed to solve the aforementioned problems. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a plastic buckle, comprising a buckle body. The buckle body includes an inner snap-fit ​​cavity and an outer connecting surface. The inner snap-fit ​​cavity includes a snap-fit ​​portion and a fastening portion. The snap-fit ​​portion includes two mirror-aligned first snap-fit ​​members and a second snap-fit ​​member, which are arranged in parallel. The fastening portion includes two mirror-aligned first fasteners and a second fastener. In the relaxed state, the first fasteners and the second fasteners are in contact without gaps. The connecting surface includes an upper end and a lower end integrally connected to the upper end. The snap-fit ​​portion is disposed on the inner sidewall of the upper end, and the fastening portion is disposed on the inner sidewall of the lower end.

[0005] A further improvement of this utility model is that: the first snap-fit ​​member includes a first snap-fit ​​panel and a first snap-fit ​​structure disposed on the first snap-fit ​​panel; the second snap-fit ​​member includes a second snap-fit ​​panel and a second snap-fit ​​structure disposed on the second snap-fit ​​panel; the second snap-fit ​​member includes a second snap-fit ​​panel and a second snap-fit ​​structure disposed on the second snap-fit ​​panel.

[0006] A further improvement of this utility model is that the longitudinal section of the upper end has a U-shaped opening structure, and the outer side of the upper end forms an angle of 70°±5° with the horizontal plane, in order to facilitate connection with other components.

[0007] A further improvement of this utility model is that: the first fastener includes a first fastening plate and a first fastening tooth disposed on the first fastening plate, the second fastener includes a second fastening plate and a second fastening tooth disposed on the second fastening plate, and the first fastening tooth and the second fastening tooth are seamless when there is no external force contact.

[0008] A further improvement of this utility model is that: when the upper surfaces of the first fastening tooth and the second fastening tooth are in contact, they form a planar structure, which can achieve the maximum fastening force.

[0009] A further improvement of this utility model is that a wear-resistant structure is provided on the inner side of the lower end.

[0010] A further improvement of this utility model is that an anti-slip layer is provided on the opposite end faces of the first buckle structure and the second buckle structure.

[0011] A further improvement of this utility model is that the ends of the lower part are arranged in parallel.

[0012] A further improvement of this utility model is that the position where the lower end is connected to the fastening part is an inclined structure with an angle of 45°±5°, to prevent breakage caused by excessive force when connecting with the car door.

[0013] The beneficial effects of this utility model are:

[0014] This invention, by providing a snap-fit ​​part and a fastening part in the snap-fit ​​cavity inside the snap-fit ​​body, can achieve a tighter connection between the snap-fit ​​body and other components, preventing wobbling and ensuring connection stability. Simultaneously, the connecting surface includes an upper end and a lower end integrally connected to the upper end. The longitudinal section of the upper end has a U-shaped opening structure, designed to facilitate connection with other components. The lower end, where it connects to the fastening part, has an inclined structure to prevent breakage due to excessive force when connecting to the car door. The overall structure of this invention improves the service life of the snap-fit ​​body, facilitates connection with car doors or dashboards, and ensures stability after connection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the right side of the present invention.

[0017] Figure 3 This is a side view of the present invention.

[0018] Figure 4 This is a top view of the structure of this utility model.

[0019] Figure 5 This is a side view of the structure of this utility model.

[0020] Reference numerals: 1-Snap-on body, 2-Snap-on cavity, 3-Connecting surface, 4-Snap-on part, 5-Fastening part, 6-First snap-on component, 7-Second snap-on component, 8-Second snap-on panel, 9-Second snap-on structure, 10-First fastener, 11-Second fastener, 12-Upper end, 13-Lower end, 14-First snap-on panel, 15-First snap-on structure, 16-Anti-slip layer structure, 17-Sloping surface structure, 18-First fastening plate, 19-First fastening tooth, 20-Second fastening plate, 21-Second fastening tooth, 22-Planar structure, 23-Wear-resistant structure. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] First embodiment:

[0023] This utility model provides a plastic buckle, including a buckle body 1. The buckle body 1 includes an inner snap-fit ​​cavity 2 and an outer connecting surface 3. The inner snap-fit ​​cavity 2 includes a snap-fit ​​part 4 and a fastening part 5. The snap-fit ​​part 4 includes two mirror-arranged first snap-fit ​​members 6 and second snap-fit ​​members 7. The second snap-fit ​​member 7 includes a second snap-fit ​​panel 8 and a second snap-fit ​​structure 9 disposed on the second snap-fit ​​panel 8. The first snap-fit ​​members 6 and the second snap-fit ​​members 7 are arranged in parallel. The fastening part 5 includes two mirror-arranged first fasteners 10 and second fasteners 11. In the relaxed state, the first fasteners 10 and the second fasteners 11 are in contact without gaps. The connecting surface 3 includes an upper end 12 and a lower end 13 integrally connected to the upper end 12. The snap-fit ​​part 4 is disposed on the inner sidewall of the upper end 12, and the fastening part 5 is disposed on the inner sidewall of the lower end 13.

[0024] The first snap-fit ​​component 6 includes a first snap-fit ​​panel 14 and a first snap-fit ​​structure 15 disposed on the first snap-fit ​​panel 14; the longitudinal section of the upper end portion 12 has a U-shaped opening structure, and the outer side of the upper end portion 12 forms a 65° angle with the horizontal plane to facilitate connection with other components; the first fastener 10 includes a first fastening plate 18 and a first fastening tooth 19 disposed on the first fastening plate 18; the second fastener 11 includes a second fastening plate 20 and a second fastening tooth 21 disposed on the second fastening plate 20; the first fastening tooth 19 and the second fastening tooth 21 are in seamless contact with each other when there is no external force; when the upper surfaces of the first fastening tooth 19 and the second fastening tooth 21 are in contact, a planar structure 22 is formed, and the planar structure 22 can provide the maximum force for fastening.

[0025] A wear-resistant structure 23 is provided on the inner side of the lower end portion 13. The wear-resistant structure 23 can play a protective role, reduce the wear of the lower end portion 13 when connected with other components, and increase the service life of the components. A layer of anti-slip structure 16 is provided on the opposite end faces of the first snap-fit ​​structure 15 and the second snap-fit ​​structure 9. The anti-slip structure 16 can play an anti-slip role, ensuring the tightness when snapping the components. The ends of the lower end portion 13 are arranged in parallel, and the position where the lower end portion 13 connects with the fastening part 5 is a bevel structure 17 with an angle of 40°. The bevel structure 17 can prevent the components from breaking due to excessive force when they are snapped with the door or dashboard.

[0026] Second embodiment:

[0027] This utility model provides a plastic buckle, including a buckle body 1. The buckle body 1 includes an inner snap-fit ​​cavity 2 and an outer connecting surface 3. The inner snap-fit ​​cavity 2 includes a snap-fit ​​part 4 and a fastening part 5. The snap-fit ​​part 4 includes two mirror-arranged first snap-fit ​​members 6 and second snap-fit ​​members 7. The second snap-fit ​​member 7 includes a second snap-fit ​​panel 8 and a second snap-fit ​​structure 9 disposed on the second snap-fit ​​panel 8. The first snap-fit ​​members 6 and the second snap-fit ​​members 7 are arranged in parallel. The fastening part 5 includes two mirror-arranged first fasteners 10 and second fasteners 11. In the relaxed state, the first fasteners 10 and the second fasteners 11 are in contact without gaps. The connecting surface 3 includes an upper end 12 and a lower end 13 integrally connected to the upper end 12. The snap-fit ​​part 4 is disposed on the inner sidewall of the upper end 12, and the fastening part 5 is disposed on the inner sidewall of the lower end 13.

[0028] The first snap-fit ​​component 6 includes a first snap-fit ​​panel 14 and a first snap-fit ​​structure 15 disposed on the first snap-fit ​​panel 14; the longitudinal section of the upper end portion 12 has a U-shaped opening structure, and the outer side of the upper end portion 12 forms a 70° angle with the horizontal plane to facilitate connection with other components; the first fastener 10 includes a first fastening plate 18 and a first fastening tooth 19 disposed on the first fastening plate 18; the second fastener 11 includes a second fastening plate 20 and a second fastening tooth 21 disposed on the second fastening plate 20; the first fastening tooth 19 and the second fastening tooth 21 are in seamless contact with each other when there is no external force; when the upper surfaces of the first fastening tooth 19 and the second fastening tooth 21 are in contact, a planar structure 22 is formed, and the planar structure 22 can provide the maximum force for fastening.

[0029] A wear-resistant structure 23 is provided on the inner side of the lower end portion 13. The wear-resistant structure 23 can play a protective role, reduce the wear of the lower end portion 13 when connected with other components, and increase the service life of the components. A layer of anti-slip structure 16 is provided on the opposite end faces of the first buckle structure 15 and the second buckle structure 9. The anti-slip structure 16 can play an anti-slip role, ensuring the tightness when the components are snapped together. The ends of the lower end portion 13 are arranged in parallel, and the position where the lower end portion 13 connects with the fastening part 5 is a bevel structure 17 with an angle of 45°. The bevel structure 17 can prevent the components from breaking due to excessive force when they are snapped together with the door or dashboard.

[0030] Third embodiment:

[0031] This utility model provides a plastic buckle, including a buckle body 1. The buckle body 1 includes an inner snap-fit ​​cavity 2 and an outer connecting surface 3. The inner snap-fit ​​cavity 2 includes a snap-fit ​​part 4 and a fastening part 5. The snap-fit ​​part 4 includes two mirror-arranged first snap-fit ​​members 6 and second snap-fit ​​members 7. The second snap-fit ​​member 7 includes a second snap-fit ​​panel 8 and a second snap-fit ​​structure 9 disposed on the second snap-fit ​​panel 8. The first snap-fit ​​members 6 and the second snap-fit ​​members 7 are arranged in parallel. The fastening part 5 includes two mirror-arranged first fasteners 10 and second fasteners 11. In the relaxed state, the first fasteners 10 and the second fasteners 11 are in contact without gaps. The connecting surface 3 includes an upper end 12 and a lower end 13 integrally connected to the upper end 12. The snap-fit ​​part 4 is disposed on the inner sidewall of the upper end 12, and the fastening part 5 is disposed on the inner sidewall of the lower end 13.

[0032] The first snap-fit ​​component 6 includes a first snap-fit ​​panel 14 and a first snap-fit ​​structure 15 disposed on the first snap-fit ​​panel 14; the longitudinal section of the upper end portion 12 has a U-shaped opening structure, and the outer side of the upper end portion 12 forms a 75° angle with the horizontal plane to facilitate connection with other components; the first fastener 10 includes a first fastening plate 18 and a first fastening tooth 19 disposed on the first fastening plate 18; the second fastener 11 includes a second fastening plate 20 and a second fastening tooth 21 disposed on the second fastening plate 20; the first fastening tooth 19 and the second fastening tooth 21 are in seamless contact with each other when there is no external force; when the upper surfaces of the first fastening tooth 19 and the second fastening tooth 21 are in contact, a planar structure 22 is formed, and the planar structure 22 can provide the maximum force for fastening.

[0033] A wear-resistant structure 23 is provided on the inner side of the lower end portion 13. The wear-resistant structure 23 can play a protective role, reduce the wear of the lower end portion 13 when connected with other components, and increase the service life of the components. A layer of anti-slip structure 16 is provided on the opposite end faces of the first snap-fit ​​structure 15 and the second snap-fit ​​structure 9. The anti-slip structure 16 can play an anti-slip role, ensuring the tightness when snapping the components. The ends of the lower end portion 13 are arranged in parallel, and the position where the lower end portion 13 connects with the fastening part 5 is a bevel structure 17 with an angle of 50°. The bevel structure 17 can prevent the components from breaking due to excessive force when they are snapped with the door or dashboard.

[0034] After pressure testing, the included angle setting in Embodiment 2 is as follows: the outer side of the upper end 12 forms a 70° angle with the horizontal plane, which is most convenient for connecting with other components; at the same time, the angle of the inclined structure 25 is 45°. Setting such an inclined structure 25 can prevent the components from breaking due to excessive force when they are engaged with the car door or dashboard. Therefore, it is the optimal embodiment.

[0035] It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A plastic fastener, characterized by: The device includes a snap-fit ​​body, which comprises an inner snap-fit ​​cavity and an outer connecting surface. The inner snap-fit ​​cavity includes a snap-fit ​​portion and a fastening portion. The snap-fit ​​portion includes two mirror-aligned first snap-fit ​​members and a second snap-fit ​​member, which are arranged in parallel. The fastening portion includes two mirror-aligned first fasteners and a second fastener. In the relaxed state, the first fasteners and the second fasteners are in contact without gaps. The connecting surface includes an upper end and a lower end integrally connected to the upper end. The snap-fit ​​portion is disposed on the inner sidewall of the upper end, and the fastening portion is disposed on the inner sidewall of the lower end.

2. A plastic fastener according to claim 1, wherein: The first snap-fit ​​component includes a first snap-fit ​​panel and a first snap-fit ​​structure disposed on the first snap-fit ​​panel, and the second snap-fit ​​component includes a second snap-fit ​​panel and a second snap-fit ​​structure disposed on the second snap-fit ​​panel.

3. A plastic fastener according to claim 1, wherein: The longitudinal section of the upper end has a U-shaped opening structure, and the outer side of the upper end forms an angle of 70°±5° with the horizontal plane.

4. The plastic fastener according to claim 1, wherein: The first fastener includes a first fastening plate and a first fastening tooth disposed on the first fastening plate, and the second fastener includes a second fastening plate and a second fastening tooth disposed on the second fastening plate. The first fastening tooth and the second fastening tooth are seamless when there is no external force contact.

5. A plastic fastener according to claim 4, wherein: When the upper surfaces of the first fastening tooth and the second fastening tooth are in contact, a planar structure is formed.

6. A plastic fastener according to claim 1, wherein: A wear-resistant structure is provided on the inner side of the lower end.

7. A plastic fastener according to claim 2, wherein: Both the first and second buckle structures have an anti-slip layer on their opposite end faces.

8. The plastic fastener according to claim 1, wherein: The lower end is arranged in a parallel configuration.

9. A plastic fastener according to claim 8, wherein: The lower end is connected to the fastener at a beveled structure with a bevel angle of 45° ± 5°.

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