High-strength round head rivet for new energy automobile

Abstract

The utility model discloses a high-strength round head rivet for a new energy automobile, and particularly relates to the technical field of rivets, the high-strength round head rivet comprises a rivet head and a rivet rod, the cross section of the rivet head is semicircular, the rivet rod and the rivet head are integrally formed, core-pulling holes are formed in the top of the rivet head and the top of the rivet rod, core-pulling rods penetrate through the core-pulling holes, and the rivet head and the rivet rod are integrally formed. A core-pulling head is fixedly arranged at the bottom end of the core-pulling rod, the section of the core-pulling head is conical, and a first rubber sealing ring is arranged between the top of the core-pulling head and the bottom of the rivet rod. The rivet is installed in a core pulling mode, the rivet installation strength is high, the rivet is not prone to loosening, the first rubber sealing ring, the second rubber sealing ring, the third rubber sealing ring and the fourth rubber sealing ring are arranged, the sealing performance of the rivet can be greatly improved, water vapor and sundries are prevented from corroding a gap between the rivet and a connected piece of the new energy automobile, and the service life of the rivet is prolonged. Therefore, the connection strength and the service life of the rivet can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of rivet technology, and more specifically to a high-strength round-head rivet for new energy vehicles. Background Technology

[0002] Round-head rivets are a common type of fastener. Their most distinctive feature is their round head. This round head design makes their surface smoother, reducing the risk of scratching surrounding objects during use, and also contributing to their aesthetic appeal. Compared to traditional round-head rivets, round-head blind rivets offer a stronger connection. Therefore, in the assembly of new energy vehicle bodies, round-head blind rivets are commonly used to connect various body components, such as doors, hoods, and trunk lids. They provide reliable connection strength while ensuring the flatness and aesthetics of the vehicle body surface. Furthermore, round-head blind rivets are also widely used in the installation of automotive interior components, such as seats and trim panels.

[0003] For example, the prior art disclosure number CN217814397U describes a lightweight, high-strength hollow rivet for fasteners in new energy vehicles. This utility model guides the downward movement of the snap-fit ​​seat through a guide bar, ensuring that it is evenly stressed during descent and expanding the hollow tube for riveting. Furthermore, during riveting, the engagement of the first and second racks prevents the snap-fit ​​seat from falling off after riveting, increasing the firmness of the riveted joint.

[0004] However, the existing technology described above still has the following problems in use: when the rivet is connected and fixed to the connected parts of the vehicle, moisture and debris can enter the gap between the rivet and the connected parts, which will corrode the rivet and affect the connection strength and service life of the rivet. Based on this, the present invention provides a high-strength round head rivet for new energy vehicles with high sealing performance. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a high-strength round-head rivet for new energy vehicles. By employing a core-pulling method for rivet installation, the rivet achieves high installation strength and is not easily loosened. Furthermore, the inclusion of rubber sealing rings one, two, three, and four greatly enhances the rivet's sealing performance, preventing moisture and debris from corroding the gap between the rivet and the connected components of the new energy vehicle. This further improves the rivet's connection strength and service life, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength round-head rivet for new energy vehicles, comprising a rivet head and a rivet shank. The rivet head has a semi-circular cross-section, and the rivet shank is integrally formed with the rivet head. Both the rivet head and the rivet shank have a core-pulling hole at their tops, and a core-pulling shank passes through the core-pulling hole. A core-pulling head is fixedly provided at the bottom of the core-pulling shank, and the core-pulling head has a tapered cross-section. A rubber sealing ring I is provided between the top of the core-pulling head and the bottom of the rivet shank. Two rubber sealing rings II are provided on the outer wall of the rivet shank, distributed vertically. Two rubber sealing rings III are provided between the core-pulling shank and the core-pulling hole in the rivet head, distributed vertically.

[0007] In a preferred embodiment, a rubber sealing ring is fixedly provided at the bottom of the rivet head, and multiple reinforcing ribs are fixedly arranged in a ring array inside the rivet head. The multiple reinforcing ribs can improve the strength of the rivet head.

[0008] In a preferred embodiment, the outer wall of the rivet rod has two annular grooves, and two rubber sealing rings are respectively disposed in the two annular grooves. The annular grooves can limit the rubber sealing rings and thus prevent them from shifting to a certain extent.

[0009] In a preferred embodiment, the inner wall of the core-pulling hole in the rivet head has two annular grooves distributed vertically, and two rubber sealing rings are respectively disposed in the two annular grooves. The annular grooves facilitate the quick installation of the rubber sealing rings and also limit their position.

[0010] In a preferred embodiment, a plurality of ring plates are fixedly sleeved on the outer wall of the core-pulling rod. The plurality of ring plates are distributed in a linear array on the outer wall of the core-pulling rod. When the plurality of ring plates are evenly distributed on the outer wall of the core-pulling rod, the surface of the core-pulling rod is uneven, which can prevent loosening to a certain extent when using a core-pulling gun to pull the core.

[0011] In a preferred embodiment, the rivet head, rivet shank, pull rod, and pull head are all made of aluminum alloy. Aluminum alloy has the characteristics of low density, light weight, and corrosion resistance. It is not easy to rust in the environment of new energy vehicles, which can ensure the connection performance and service life of the rivet. The outer walls of the rivet head, rivet shank, pull rod, and pull head are all coated with polyurethane antistatic and wear-resistant coating. This coating has outstanding wear resistance, can adapt to friction in different environments, has good antistatic performance, can effectively prevent static electricity hazards, and has good weather resistance, and is not easily affected by temperature changes and ages.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This utility model uses a core-pulling method to install rivets, resulting in high rivet installation strength and resistance to loosening. Furthermore, the inclusion of rubber sealing rings one, two, three, and four greatly improves the rivet's sealing performance, preventing moisture and debris from corroding the gap between the rivet and the connected parts of the new energy vehicle. This further enhances the connection strength and service life of the rivet. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a bottom view of the overall structure of this utility model;

[0016] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 4 This is a sectional view of the rivet head and rivet shank of this utility model;

[0018] Figure 5 This is a cross-sectional view of the rivet head of this utility model.

[0019] The attached diagram is labeled as follows: 1. Rivet head; 2. Rivet rod; 3. Pull hole; 4. Pull rod; 5. Pull head; 6. Rubber sealing ring one; 7. Rubber sealing ring two; 8. Rubber sealing ring three; 9. Rubber sealing ring four; 10. Reinforcing rib; 11. Annular groove; 12. Annular groove; 13. Ring plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Refer to the instruction manual appendix Figures 1-5 This utility model provides a high-strength round-head rivet for new energy vehicles, including a rivet head 1 and a rivet rod 2. The rivet head 1 has a semi-circular cross-section, and the rivet rod 2 is integrally formed with the rivet head 1. Both the rivet head 1 and the rivet rod 2 have a core-pulling hole 3 at their tops. A core-pulling rod 4 passes through the core-pulling hole 3, and a core-pulling head 5 is fixedly provided at the bottom end of the core-pulling rod 4. The core-pulling head 5 has a tapered cross-section.

[0022] A rubber sealing ring 6 is provided between the top of the core-pulling head 5 and the bottom of the rivet rod 2. Two rubber sealing rings 7 are provided on the outer wall of the rivet rod 2. Two rubber sealing rings 8 are provided between the core-pulling rod 4 and the core-pulling hole 3 inside the rivet head 1. A rubber sealing ring 9 is fixedly provided at the bottom of the rivet head 1. Multiple reinforcing ribs 10 are fixedly arranged in a ring array inside the rivet head 1. The multiple reinforcing ribs 10 can improve the strength of the rivet head 1.

[0023] The outer wall of the rivet rod 2 has two annular grooves 11, and two rubber sealing rings 7 are respectively set in the two annular grooves 11. The inner wall of the core-pulling hole 3 in the rivet head 1 has two vertically distributed annular grooves 12, and two rubber sealing rings 8 are respectively set in the two annular grooves 12. The outer wall of the core-pulling rod 4 is fixedly fitted with multiple ring plates 13, and the multiple ring plates 13 are distributed in a linear array on the outer wall of the core-pulling rod 4.

[0024] The rivet head 1, rivet shank 2, pull rod 4, and pull head 5 are all made of aluminum alloy. Aluminum alloy has the characteristics of low density, light weight, and corrosion resistance. It is not easy to rust in the environment of new energy vehicles, which can ensure the connection performance and service life of the rivet. The outer walls of the rivet head 1, rivet shank 2, pull rod 4, and pull head 5 are all coated with polyurethane antistatic wear-resistant coating. This coating has outstanding wear resistance, can adapt to friction in different environments, has good antistatic performance, can effectively prevent static electricity hazards, and has good weather resistance, and is not easily affected by temperature changes and ages.

[0025] In practical use, the round-headed blind rivet is first passed through the pre-drilled hole of the connected component on the new energy vehicle. The diameter of the rivet rod 2 matches the pre-drilled hole to ensure that the rivet rod 2 can be inserted smoothly. Then, the nozzle of the rivet gun is fitted onto the blind rivet 4, and the nozzle is engaged with the ring plate 13 on the blind rivet 4. Then, the rivet gun is started. The rivet gun generates a pulling force through its internal mechanical structure or hydraulic system, applying a pulling force to the blind rivet 4. Under the action of the pulling force, the blind rivet 4 is gradually pulled out of the blind hole 3. At the same time, the blind head 5 on the blind rivet 4 is deformed by the pulling force, causing the rivet rod 2 to form a semi-circular head shape. This semi-circular head corresponds to the rivet head 1 and tightly clamps the connected component. As the core-pulling rod 4 is further pulled out, the semi-circular head of the rivet rod 2 continuously deforms and closely fits the surface of the connected parts, generating sufficient clamping force with the semi-circular rivet head 1, thereby achieving a high-strength connection between the connected parts. When the core-pulling rod 4 is pulled to a certain extent, it will break at the preset weak point. At this time, the rivet gun stops working, and the installation is completed. Furthermore, the rubber sealing ring 6 between the core-pulling head 5 and the rivet rod 2, the two rubber sealing rings 7 on the rivet rod 2 and the pre-drilled holes on the connected parts, the rubber sealing ring 8 between the core-pulling rod 4 and the core-pulling hole 3, and the rubber sealing ring 9 between the rivet head 1 and the connected parts can all play a sealing role, thereby improving the sealing performance of the round-head rivet.

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength round-head rivet for new energy vehicles, comprising a rivet head (1) and a rivet shank (2), wherein the rivet head (1) has a semi-circular cross-section, and the rivet shank (2) is integrally formed with the rivet head (1), characterized in that: Both the rivet head (1) and the rivet rod (2) have a core-pulling hole (3) at the top. A core-pulling rod (4) passes through the core-pulling hole (3). A core-pulling head (5) is fixed at the bottom of the core-pulling rod (4). The cross-section of the core-pulling head (5) is set as a cone. A rubber sealing ring 1 (6) is provided between the top of the core puller (5) and the bottom of the rivet rod (2). Two rubber sealing rings 2 (7) are provided on the outer wall of the rivet rod (2) and distributed vertically. Two rubber sealing rings 3 (8) are provided between the core puller rod (4) and the core puller hole (3) in the rivet head (1).

2. The high-strength round-head rivet for new energy vehicles according to claim 1, characterized in that: The bottom of the rivet head (1) is fixedly provided with a rubber sealing ring (9), and a number of reinforcing ribs (10) arranged in a ring array are fixedly inserted inside the rivet head (1).

3. The high-strength round-head rivet for new energy vehicles according to claim 1, characterized in that: The outer wall of the rivet rod (2) has two annular grooves (11), and two rubber sealing rings (7) are respectively located in the two annular grooves (11).

4. The high-strength round-head rivet for new energy vehicles according to claim 1, characterized in that: The inner wall of the core-pulling hole (3) in the rivet head (1) has two annular grooves (12) distributed vertically, and two rubber sealing rings (8) are respectively located in the two annular grooves (12).

5. A high-strength round-head rivet for new energy vehicles according to claim 1, characterized in that: Multiple ring plates (13) are fixedly sleeved on the outer wall of the core-pulling rod (4), and the multiple ring plates (13) are distributed in a linear array on the outer wall of the core-pulling rod (4).

6. A high-strength round-head rivet for new energy vehicles according to claim 1, characterized in that: The rivet head (1), rivet rod (2), core pull rod (4) and core pull head (5) are all made of aluminum alloy, and the outer walls of the rivet head (1), rivet rod (2), core pull rod (4) and core pull head (5) are all coated with polyurethane antistatic wear-resistant coating.

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