阅读说明：本技术 一种挡泥皮固定螺栓 (Mud guard fixing bolt ) 是由 余纪邦 章志才 宋心雷 崔建维 李昕 付宏程 朱琳 时辰 朱俊峰 于 2021-08-03 设计创作，主要内容包括：本发明公开了一种挡泥皮固定螺栓,包括：预紧螺栓,其包括第一螺帽和第一螺杆,所述第一螺帽内设有容纳槽,所述第一螺杆内设有与所述容纳槽连通的容纳腔；所述第一螺杆包括连接段和调节段,所述连接段将所述第一螺帽和所述调节段连接,所述调节段沿着中心线分割成至少两块调节块,所述调节块与所述连接段弯折连接；所述容纳腔的直径朝向远离所述连接段的方向逐渐减小。紧固螺栓,其包括第二螺帽和第二螺杆,所述第二螺帽与所述容纳槽相配合,第二螺杆与所述容纳腔相配合；当所述第二螺杆逐渐推进所述容纳腔内,所述第二螺杆使得所述调节块朝向四周弯折。本发明通过设计一种便拆卸的挡泥皮固定螺栓,实现不需要辅助工具的快速便捷拆装。(The invention discloses a mud guard fixing bolt, which comprises: the pre-tightening bolt comprises a first nut and a first screw rod, wherein an accommodating groove is formed in the first nut, and an accommodating cavity communicated with the accommodating groove is formed in the first screw rod; the first screw comprises a connecting section and an adjusting section, the connecting section connects the first screw cap with the adjusting section, the adjusting section is divided into at least two adjusting blocks along a central line, and the adjusting blocks are connected with the connecting section in a bending mode; the diameter of the accommodating cavity is gradually reduced towards the direction far away from the connecting section. The fastening bolt comprises a second nut and a second screw, the second nut is matched with the accommodating groove, and the second screw is matched with the accommodating cavity; when the second screw rod is gradually pushed into the accommodating cavity, the second screw rod enables the adjusting block to bend towards the periphery. According to the invention, the detachable mud guard fixing bolt is designed, so that the rapid and convenient disassembly without an auxiliary tool is realized.)

1. A fender mud skin fixing bolt which is characterized by comprising:

the pre-tightening bolt comprises a first nut and a first screw rod, wherein an accommodating groove is formed in the first nut, and an accommodating cavity communicated with the accommodating groove is formed in the first screw rod; the first screw comprises a connecting section and an adjusting section, the connecting section connects the first screw cap with the adjusting section, the adjusting section is divided into at least two adjusting blocks along a central line, and the adjusting blocks are connected with the connecting section in a bending mode; the diameter of the accommodating cavity is gradually reduced towards the direction far away from the connecting section;

the fastening bolt comprises a second nut and a second screw, the second nut is matched with the accommodating groove, and the second screw is matched with the accommodating cavity; when the second screw rod is gradually pushed into the accommodating cavity, the second screw rod enables the adjusting block to bend towards the periphery.

2. The fender fixing bolt of claim 1, wherein the outer side wall of the adjusting block is an elastic body and the inner side wall is a rigid body.

3. The fender leather fixing bolt of claim 1, wherein the first screw further comprises an elastic screw head, the screw head is respectively connected with each adjusting block, a placing groove is arranged in the screw head, and the second screw is matched with the placing groove.

4. The fender skin anchor stud of claim 1, wherein the portion of the adjustment block having the smallest diameter is of rounded design.

5. The fender skin anchor bolt of claim 1, wherein a diameter of a portion of the second threaded rod corresponding to the adjustment section is larger than a diameter of a portion corresponding to the connecting section.

6. The fender fixing bolt of claim 1, wherein a conical head is further provided at an end of the second screw remote from the second nut.

7. The fender fixing bolt of claim 1, wherein the receiving groove, the receiving cavity and the pre-tightening bolt are of concentric circular design.

8. The fender fixing bolt according to any one of claims 1 to 7, wherein a plurality of rows of annular teeth are further provided in the middle of the second screw, and the side of the annular teeth facing the second nut is a flat surface and the side facing away from the second nut is an inclined surface.

9. The fender leather fixing bolt of claim 8, wherein an annular groove is formed at the inner side wall where the connecting section and the adjusting section are connected, one side of the annular groove facing the adjusting section is a plane, and the other side of the annular groove facing the connecting section is an inclined plane;

when the second screw rod gradually enters the accommodating cavity, the inclined surface of the annular tooth and the inclined surface of the annular groove are contacted with each other; but after the second screw rod enters the accommodating cavity, the plane of the annular tooth and the plane of the annular groove are mutually butted.

Technical Field

The invention relates to the technical field of automobile parts, in particular to a mud guard fixing bolt.

Background

Various types of rubber boots, such as tire boots, are commonly found in the underbody of automobiles. Under the cab of a pickup truck, there are also typically engine fenders, condenser fenders, and the like. The fender is usually fixed to the sheet metal part of the vehicle body by expansion bolts or ordinary bolts. In the prior art, the state and the position of the mud guard can not be finely adjusted after the bolt is tightened, so that the mud guard is a fixed heaven and earth; in addition, the assembly and disassembly of the prior art are difficult, and a wrench or a screwdriver is needed to rotate when the bolt or the expansion bolt is disassembled, so that the assembly and the disassembly are inconvenient.

Therefore, how to provide a quick and convenient detachable fender leather fixing bolt becomes a technical problem which needs to be solved urgently in the field.

Disclosure of Invention

The invention aims to provide a fixing bolt for a mud guard, which can realize quick and convenient installation and disassembly of the mud guard and a vehicle body metal plate.

According to an aspect of the present invention, there is provided a fender fixing bolt including:

the pre-tightening bolt comprises a first nut and a first screw rod, wherein an accommodating groove is formed in the first nut, and an accommodating cavity communicated with the accommodating groove is formed in the first screw rod; the first screw comprises a connecting section and an adjusting section, the connecting section connects the first screw cap with the adjusting section, the adjusting section is divided into at least two adjusting blocks along a central line, and the adjusting blocks are connected with the connecting section in a bending mode; the diameter of the accommodating cavity is gradually reduced towards the direction far away from the connecting section;

the fastening bolt comprises a second nut and a second screw, the second nut is matched with the accommodating groove, and the second screw is matched with the accommodating cavity; when the second screw rod is gradually pushed into the accommodating cavity, the second screw rod enables the adjusting block to bend towards the periphery.

Optionally, according to the fender leather fixing bolt provided by the invention, the outer side wall of the adjusting block is an elastic body, and the inner side wall of the adjusting block is a rigid body.

Optionally, according to the mud guard fixing bolt provided by the invention, the first screw further comprises an elastic screw head, the screw head is respectively connected with each adjusting block, a placing groove is formed in the screw head, and the second screw is matched with the placing groove.

Optionally, according to the retaining wall fixing bolt of the invention, the part of the adjusting block with the smallest diameter is designed to be rounded.

Optionally, according to the retaining wall fixing bolt of the present invention, a diameter of a portion of the second screw corresponding to the adjusting section is larger than a diameter of a portion corresponding to the connecting section.

Optionally, according to the retaining clay fixing bolt of the present invention, one end of the second screw rod, which is far away from the second nut, is further provided with a conical head.

Optionally, according to the retaining bolt for retaining mud, the accommodating groove, the accommodating cavity and the pre-tightening bolt are designed in concentric circles.

Optionally, according to the retaining clay fixing bolt of the present invention, the middle portion of the second screw is further provided with a plurality of rows of annular teeth, and a side surface of the annular teeth facing the second nut is a flat surface, and a side surface of the annular teeth facing away from the second nut is an inclined surface.

Optionally, according to the retaining mud leather fixing bolt of the present invention, an annular groove is disposed at an inner side wall where the connecting section and the adjusting section are connected, one side of the annular groove facing the adjusting section is a plane, and the other side of the annular groove facing the connecting section is an inclined plane;

when the second screw rod gradually enters the accommodating cavity, the inclined surface of the annular tooth and the inclined surface of the annular groove are contacted with each other; but after the second screw rod enters the accommodating cavity, the plane of the annular tooth and the plane of the annular groove are mutually butted.

According to the invention, the detachable mud guard fixing bolt is designed, so that the rapid and convenient disassembly without an auxiliary tool is realized. In the implementation process, the pretension bolt can realize the advance positioning of fender mud skin and automobile body panel beating to because the pretension bolt does not possess the effect of direct fixed fender mud skin, can finely tune fender mud skin this moment, guarantee the accuracy of its assembly, the thorough fixing between fender mud skin and the automobile body panel beating is realized to rethread pretension bolt at last. In addition, in the using process, any disassembling and assembling tools such as a screwdriver and a clamp are not needed, and the novel multifunctional electric heating cooker is simple and convenient.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a perspective view of a fender retaining bolt as disclosed herein;

FIG. 2 is a disassembled view of the retaining bolt for a fender disclosed in the present invention;

FIG. 3 is a schematic structural view of the fender fixing bolt disclosed by the invention.

Description of reference numerals: 11-a first nut; 12-a connecting segment; 13-a regulating block; 14-a screw head; 15-accommodating the tank; 16-a containment chamber; 17-an annular groove;

21-a second nut; 22-a second screw; 23-a conical head; 24-ring teeth; 3-mud blocking skin; 4-vehicle body sheet metal.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

According to fig. 1 to 3, the present invention provides a fender fixing bolt, comprising: the pre-tightening bolt comprises a first nut 11 and a first screw, wherein an accommodating groove 15 is formed in the first nut 11, and an accommodating cavity 16 communicated with the accommodating groove 15 is formed in the first screw; the first screw comprises a connecting section 12 and an adjusting section, the connecting section 12 connects the first screw cap 11 with the adjusting section, the adjusting section is divided into at least two adjusting blocks 13 along the central line, and the adjusting blocks 13 are connected with the connecting section 12 in a bending mode; the diameter of the receiving cavity 16 decreases in a direction away from the connecting section 12.

The fastening bolt comprises a second nut 21 and a second screw 22, the second nut 21 is matched with the accommodating groove 15, and the second screw 22 is matched with the accommodating cavity 16; when the second screw 22 is gradually pushed into the accommodating cavity 16, the second screw 22 bends the adjusting block 13 towards the periphery.

Further, the outer side wall of the adjusting block 13 is an elastic body, and the inner side wall thereof is a rigid body. The outer side wall of the adjusting block 13 is an elastic body, so that the outer diameter of the pre-tightening bolt is larger than the apertures of the mud guard 3 and the vehicle body metal plate 4 when the pre-tightening bolt is arranged; the inside wall is a rigid body, that is, the side wall of the accommodating cavity 16 is a rigid body, so that the elastic block can be bent around in the process of pushing the second screw 22 into the accommodating cavity 16.

Further, the first screw rod further comprises an elastic screw rod head 14, the screw rod head 14 is respectively connected with each adjusting block 13, a placing groove is formed in the screw rod head 14, and the second screw rod 22 is matched with the placing groove. The second screw 22 is prevented from rubbing the structure in the vehicle body metal plate 4, and the structure in the vehicle body is also prevented from pushing the second screw 22 outwards.

Furthermore, the minimum diameter part of the adjusting block 13 is designed to be rounded. Since the second screw 22 needs to be pushed into the accommodating cavity 16, and needs to be matched with the adjusting frame in the pushing process, the adjusting block 13 subjected to rounding processing can ensure that the second screw 22 is stably pushed.

Furthermore, the diameter of the portion of the second screw 22 corresponding to the adjusting section is gradually reduced toward the direction away from the second nut 21, and the rate of reduction of the diameter is smaller than the rate of reduction of the diameter of the accommodating cavity 16 formed by the adjusting block 13. The above mentions that the second screw 22 needs to be fitted with the adjusting block 13, so that the front end of the second screw 22 is reduced in diameter as much as possible to avoid that the second screw 22 cannot pass through the position where the inner diameter of the accommodating chamber 16 is minimum; in addition, the diameter change rate of the second screw 22 is far less than that of the accommodating cavity 16, which otherwise would result in that the second screw 22 could not push the adjusting block 13 to bend around.

Further, the diameter of the second screw 22 corresponding to the adjusting section is larger than the diameter of the connecting section 12. The larger diameter portion of the second screw 22 serves to prevent the second screw 22 from backing out of the connecting section 12 when the second screw 22 enters the receiving cavity 16.

Further, a conical head 23 is further provided at an end of the second screw 22 away from the second nut 21. The second screw 22 can rapidly and directly pass through the minimum diameter position of the accommodating cavity 16, and the adjusting block 13 can be rapidly bent around, so that the effect of locking the mud guard 3 and the vehicle body metal plate 4 is achieved.

Further, the receiving groove 15, the receiving cavity 16 and the pretensioning bolt are designed as concentric circles. The practicality of pretension bolt has been promoted.

Furthermore, a plurality of rows of annular teeth 24 are further arranged in the middle of the second screw 22, and the side surface of the annular teeth 24 facing the second nut 21 is a plane surface, and the side surface facing away from the second nut 21 is an inclined surface. Although it is mentioned above that the diameter of the portion of the second screw 22 corresponding to the adjusting section is larger than the diameter of the portion corresponding to the connecting section 12, thereby serving to prevent the second screw 22 from being withdrawn from the connecting section 12, the annular tooth 24 can further enhance the effect.

Furthermore, an annular groove 17 is arranged at the inner side wall where the connecting section 12 is connected with the adjusting section, one side of the annular groove 17 facing the adjusting section is a plane, and the other side of the annular groove 17 facing the connecting section 12 is an inclined plane; when the second screw 22 gradually enters the housing chamber 16, the inclined surface of the annular tooth 24 and the inclined surface of the annular groove 17 contact each other; however, when the second screw 22 enters the receiving chamber 16, the flat surfaces of the annular teeth 24 and the flat surfaces of the annular grooves 17 interfere with each other.

The invention divides the fixing process into two stages of a pre-tightening stage and a locking stage, thereby realizing the function of adjusting before fixing. The specific implementation method comprises the following steps: firstly, the fastening bolt penetrates into the accommodating cavity 16 of the pre-tightening bolt, the pushing can be stopped when the clicking sound (the annular tooth 24 is in contact with the annular groove 17) appears in the pushing process, the fastening bolt cannot fall off at the moment, the position of the mud guard 3 can be adjusted, and the fastening bolt is pushed to the bottom after the adjustment is finished. In the invention, the first screw is designed to be hollow, and the outer wall of the adjusting block 13 is soft and is in direct contact with the fixing hole of the automobile body metal plate 4, so that certain elasticity is achieved, and fastening can be realized after the adjusting block is resisted. The inner wall of the adjusting block 13 has certain rigidity to play a supporting role.

When the fastening bolt needs to be disassembled, the screw head 14 is pushed forcibly, the outer wall of the adjusting block 13 deforms at the moment, the inner wall is continuously opened, the middle hollow part is opened allowance, when the annular tooth 24 is opened to be separated from the annular groove 17, the conical head 23 of the fastening bolt is pushed in a proper way, the fastening bolt can be easily pushed out of the accommodating cavity 16, and therefore the portable disassembling function is achieved.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.