A plastic-coated bolt for an automobile

Abstract

The application discloses a plastic-coated bolt for an automobile, which comprises a bolt body, wherein the bolt body is composed of a head and a screw rod, the head is installed at the top end of the screw rod, and a compression structure is installed at the bottom end of the head; one end of the compression structure is connected with the bottom of the head, and the other end is sleeved on the screw rod. Through the above mode, the plastic-coated bolt for the automobile adopts the compression structure, and the anti-wear material is arranged on the bottom surface of the head, so that the utilization rate of the anti-wear material is improved.

Description

Technical Field

[0001] This invention relates to the field of parts, and in particular to a plastic-coated bolt for automobiles. Background Technology

[0002] Bolts are a type of fastener consisting of a head and a shank, used to fasten two parts with through holes.

[0003] In the automobile manufacturing process, the automobile structure is first painted before being connected by parts. Bolts are commonly used for this purpose. However, to protect the paint, plastic-coated bolts are often used for connection and fixation. Because the head of the plastic-coated bolt is embedded in the wear-resistant material, it can avoid scratching the paint surface during installation and removal. However, in the current manufacturing process, almost the entire head of the plastic-coated bolt is embedded in the wear-resistant material. Since the contact surface is the bottom surface of the head, the wear-resistant material on the top surface of the head cannot be well utilized. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a plastic-coated bolt for automobiles that can improve the utilization rate of wear-resistant materials.

[0005] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a plastic-coated bolt for automobiles, including a bolt body, the bolt body being composed of a head and a screw, the head being installed at the top of the screw, and a compression structure being installed at the bottom of the head;

[0006] One end of the compression structure is connected to the bottom of the head, and the other end is fitted onto the screw.

[0007] In a preferred embodiment of the present invention, the compression structure includes a telescopic sleeve and a slip ring, the top of the telescopic sleeve is fixedly connected to the bottom of the head, and the bottom of the telescopic sleeve is fitted onto the outer wall of the slip ring.

[0008] In a preferred embodiment of the present invention, the screw side adopts a trapezoidal thread.

[0009] In a preferred embodiment of the present invention, the slip ring engages with the trapezoidal thread.

[0010] In a preferred embodiment of the present invention, the telescopic sleeve adopts an outward protrusion structure in the middle.

[0011] In a preferred embodiment of the present invention, the upper and lower sections of the telescopic sleeve of the protruding structure are provided with grooves, and the hardness of the grooves is less than the hardness of the protruding structure.

[0012] The beneficial effects of the present invention are: The present invention provides a plastic-coated bolt for automobiles, which adopts a compression structure and places all the wear-resistant material on the bottom surface of the head, thereby improving the utilization rate of the wear-resistant material. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of a plastic-coated bolt for automobiles according to the present invention;

[0014] The components in the attached diagram are labeled as follows: 1. Head; 2. Screw; 3. Telescopic sleeve; 4. Slip ring; 5. Outer protrusion structure; 6. Groove; 7. Trapezoidal thread. Detailed Implementation

[0015] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0016] Please see Figure 1 The embodiments of the present invention include:

[0017] A plastic-coated bolt for automobiles includes a bolt body, which consists of a head 1 and a screw 2. The head 1 is mounted on the top of the screw 2, and a compression structure is mounted on the bottom of the head 1. The compression structure is made of wear-resistant material, and all the wear-resistant material is placed on the bottom surface of the head 1, thereby improving the utilization rate of the wear-resistant material.

[0018] One end of the compression structure is connected to the bottom of the head 1, and the other end is fitted onto the screw 2, so that the compression structure can move up and down along the screw 2 during operation.

[0019] The compression structure includes a telescopic sleeve 3 and a slip ring 4. The top of the telescopic sleeve 3 is fixedly connected to the bottom of the head 1, and the bottom of the telescopic sleeve 3 is fitted onto the outer wall of the slip ring 4. By pressing upward through the slip ring 4, the telescopic sleeve 3 extends outward from the middle and fills the space between the head 1 and the paint surface, thus playing a role in preventing paint scratches.

[0020] The screw 2 has a trapezoidal thread 7 on its side, and the bolt is used for a through hole that mates with the trapezoidal thread 7.

[0021] The slip ring 4 engages with the trapezoidal thread 7, which makes the slip ring 4 move up and down more smoothly.

[0022] The telescopic sleeve 3 has an outward protrusion structure 5 in the middle, so that when the slip ring 4 is pressed upward, the telescopic sleeve 3 can expand from the inside to the outside, rather than from the outside to the inside.

[0023] The upper and lower sections of the telescopic sleeve 3 of the protruding structure 5 are provided with grooves 6. The hardness of the grooves 6 is less than that of the protruding structure 5, so that when the slip ring 4 is pressed upward, the grooves 6 first deform inward, which is more conducive to the protruding structure 5 unfolding from the inside to the outside.

[0024] Unlike existing technologies, this invention provides a plastic-coated bolt for automobiles. This plastic-coated bolt adopts a compression structure, with all the wear-resistant material placed on the bottom surface of the head, thereby improving the utilization rate of the wear-resistant material.

[0025] In the description of this invention, it should be noted that all components are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional test methods. The terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this invention is usually placed in during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0026] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A plastic-coated bolt for automobiles, comprising a bolt body, the bolt body being composed of a head and a threaded rod, the head being mounted on the top of the threaded rod, characterized in that, A compression structure is installed at the bottom of the head; One end of the compression structure is connected to the bottom of the head, and the other end is sleeved on the screw. The compression structure includes a telescopic sleeve and a slip ring. The top of the telescopic sleeve is fixedly connected to the bottom of the head, and the bottom of the telescopic sleeve is fitted onto the outer wall of the slip ring. The telescopic sleeve has an outward protrusion structure in the middle; The compression structure is made of wear-resistant material.

2. The plastic-coated bolt for automobiles according to claim 1, characterized in that: The screw has a trapezoidal thread on its side.

3. The automotive plastic-coated bolt according to claim 2, characterized in that: The slip ring mates with the trapezoidal thread.

4. The plastic-coated bolt for automobiles according to claim 1, characterized in that: The upper and lower sections of the telescopic sleeve of the protruding structure are provided with grooves, and the hardness of the grooves is less than the hardness of the protruding structure.

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