CN210047545U

CN210047545U - Fixing structure of automobile fender

Info

Publication number: CN210047545U
Application number: CN201920818637.XU
Authority: CN
Inventors: 刘海禄; 陈贝; 王树松; 冉璐路
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely Automobile Research Institute Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-02-11
Anticipated expiration: 2029-05-31

Abstract

The utility model provides a fixed knot of fender constructs belongs to car technical field. It has solved the problem that current fender installation accuracy is low, poor stability. This automobile fender's fixed knot constructs, including the bolt with set up the connecting hole on the fender, fixed knot constructs still includes the sliding sleeve, the sliding sleeve setting is in the connecting hole of fender, the bolt passes the sliding sleeve and locks the sliding sleeve on the automobile body, the both ends of sliding sleeve all have with the spacing location turn-ups in the connecting hole of sliding sleeve axial, have the clearance between sliding sleeve outer peripheral face and the connecting hole pore wall. This automobile fender's fixed knot constructs makes the installation accuracy and the stability of fender high.

Description

Fixing structure of automobile fender

Technical Field

The utility model belongs to the technical field of the car, a fixed knot of fender constructs is related to.

Background

At present, automobile fenders in the market are mainly made of metal materials, and are mainly used for meeting the practical requirements of energy conservation and emission reduction and improving the endurance mileage of electric vehicles, the light weight of automobiles increasingly becomes a second choice in the automobile industry, and the replacement of traditional steel materials of automobile bodies into novel materials capable of reducing weight is the most direct and effective method for light weight, for example, aluminum is used for replacing steel, and plastic is used for replacing steel. Compared with a steel fender, the plastic fender has many advantages, such as light weight, pedestrian protection, corrosion resistance, light collision resistance and more flexible modeling, but the installation and fixing mode of the existing fender still adopts the traditional bolt and nut for fixing, or the fender disclosed in the patent document (application number: 201720847642.4) comprises a fender body and a threaded fastener, wherein the fender body is a carbon fiber fender body, and the threaded fastener is fixedly bonded with the carbon fiber fender body and/or the threaded fastener is at least partially embedded and fixed in the carbon fiber fender body. The linear expansion coefficient of plastics is great more than the steel, receive the easy expend with heat and contract with cold of ambient temperature influence, the plastics fender of online spraying when the application workshop, the stoving temperature of glue and finish all is above 140 ℃, the stoving temperature of electrophoresis reaches 180 ℃ 190 even, huge difference in temperature makes the thermal expansion deflection of plastics fender reach tens of millimeters, and adopt traditional fixed mode can make the plastics fender can not normally expend with heat and contract with cold when the application toasts, finally lead to the fender to warp, the size is out of tolerance, with the automobile body mismatch, the installation accuracy is poor.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a fixed knot of fender constructs for solve the problem that current fender installation accuracy is low, poor stability.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an automobile fender's fixed knot constructs, includes the bolt and sets up the connecting hole on the fender, fixed knot constructs still includes the sliding sleeve, the sliding sleeve sets up in the connecting hole of fender, and above-mentioned bolt passes the sliding sleeve and locks the sliding sleeve on the automobile body, the both ends of sliding sleeve all have with the spacing location turn-ups in the connecting hole of sliding sleeve axial, the clearance has between sliding sleeve outer peripheral face and the connecting hole pore wall.

The bolt passes and connects on the automobile body behind the sliding sleeve, thereby fix sliding sleeve locking on the automobile body, the fender passes through the connecting hole cover and establishes on the sliding sleeve, the location turn-ups at both ends can be spacing to the fender on the sliding sleeve simultaneously, avoid the fender to break away from the sliding sleeve, realize being connected of fender and automobile body, and the clearance has between sliding sleeve outer peripheral face and the connecting hole pore wall, consequently, dry when the finish, temperature variation such as electrophoresis stoving is great and lead to the fender to appear expend with heat or during shrinkage, the fender can slide through above-mentioned clearance and relative sliding sleeve, treat that the temperature resumes normal time the same relative sliding sleeve of fender slides and resume normal installation state, thereby avoid leading to the fender to warp because of expend with heat and shrinkage, fixed knot constructs.

In foretell fender's fixed knot constructs, the connecting hole is the bar hole, and the cross section width of connecting hole is greater than the external diameter of sliding sleeve. According to the deformation direction of the fender when expend with heat and contract with cold, set up the connecting hole into the bar hole unanimous with the deformation direction to make the relative fender of sliding sleeve slide along bar hole length direction when the fender deforms, and the cross section width of connecting hole is greater than the sliding sleeve external diameter, in order to guarantee that the sliding sleeve can slide relative to the fender.

In the fixing structure of the automobile fender, the difference value between the width of the cross section of the connecting hole and the outer diameter of the sliding sleeve is 0.1-0.4 mm, and the length of the cross section of the connecting hole is 1.5-3 times of the width. The cross section width of connecting hole is less with the external diameter difference of sliding sleeve, only need between sliding sleeve and the fender can realize sliding, and this difference is less simultaneously, can guarantee the installation stability of fender under the normal condition, and the length in bar hole is great to satisfy the deformation demand of fender.

In foretell automobile fender's fixed knot constructs, the sliding sleeve includes endotheca and outer bush, the one end cover of outer bush is established in the one end of endotheca and is linked firmly through the tight fit, the other end of outer bush and endotheca is all turned over outwards and is rolled over and form foretell location turn-ups, fender's connecting hole border part imbeds between two location turn-ups. The sliding sleeve is formed by mutually sleeving the inner bushing and the outer bushing, is convenient to install, and meanwhile, the two positioning flanges are arranged in the circumferential direction, so that the sliding sleeve is only required to be sleeved with each other during installation, the direction of circumferential adjustment is not needed, the sliding sleeve is more convenient to install, and in the long-term use process, even if circumferential movement occurs to the sliding sleeve, the fender is always positioned by the positioning flanges.

In the fixing structure of the automobile fender, the distance between the two positioning flanges is larger than the thickness of the fender. The fender is prevented from sliding relative to the sliding sleeve due to the fact that the two positioning flanges clamp the fender.

In the fixing structure of the automobile fender, the difference value between the distance between the two positioning flanges and the thickness of the fender is 0.4-0.8 mm. The relative sliding sleeve slides when the fender deforms can be guaranteed by the difference, and meanwhile, the installation stability of the fender is guaranteed under a normal state.

In foretell fender's fixed knot constructs, the outer bush is kept away from the turn-ups of location one end inside edge circumference and is had the inner chamfer, the inner bush is kept away from the turn-ups of location one end outside edge circumference and is had the outer chamfer. Because the inner bush and the outer bush are in tight fit, the inner chamfer and the outer chamfer can facilitate the sleeving of the inner bush and the outer bush during installation.

In foretell fender's fixed knot constructs, the head circumference of bolt has the locking turn-ups, the locking turn-ups compresses tightly on the location turn-ups lateral surface of inner liner, and the location turn-ups lateral surface of outer liner compresses tightly on the automobile body side under the effect of locking turn-ups. The bolt is pressed on the positioning flanging of the inner bushing through the locking flanging, the positioning flanging of the outer bushing is pressed on the vehicle body, namely the bolt and the inner bushing, the outer bushing and the vehicle body are pressed face to face, the contact area is large, and the mutual pressing stability is guaranteed.

In foretell fender's fixed knot constructs, the through-hole has been seted up on the automobile body, the bolt passes sliding sleeve and through-hole in proper order after through nut locking. The connection stability of the fender and the plate-shaped part on the vehicle body is ensured.

In the above-mentioned fixed knot of car fender constructs, the fender adopts plastics to make. The plastics fender can realize the vehicle lightweight, and expend with heat and contract with cold more easily when ambient temperature changes simultaneously, and the sliding design between fender and the sliding sleeve can make the fender installation accuracy and the stability of plastics material higher.

Compared with the prior art, this fender's fixed knot constructs has following advantage:

1. because the connecting hole is the bar hole, and the fender can slide with the sliding sleeve relatively, therefore when expend with heat or contract with cold appear in the fender, the fender can slide with the sliding sleeve relatively, treat that the same relative sliding sleeve of fender slides and resume normal installation state when the temperature resumes to avoid because expend with heat and contract with cold lead to the fender to warp, fixed knot structure receives destruction etc. guarantees the installation accuracy and the stability of fender.

2. Because the sliding sleeve passes through the interior bush and cup joints each other with the outer liner and forms, easy to assemble, two location turn-ups all circumference simultaneously set up, only need overlap each other when consequently installing and establish, need not circumference adjustment direction for it is more convenient to install.

Drawings

Fig. 1 is a partial perspective view of a fixing structure of a fender panel.

Fig. 2 is a partial structural front view of a fixing structure of a fender panel.

Fig. 3 is a sectional view of the structure at a-a in fig. 2.

Fig. 4 is a sectional view of the structure at B-B in fig. 2.

In the figure, 1, a fender; 11. connecting holes; 12. a boss; 2. a vehicle body; 21. a through hole; 3. a bolt; 31. locking the flanging; 4. a sliding sleeve; 41. an inner liner; 411. chamfering the outer part; 42. an outer liner; 421. inner chamfering; 43. positioning the flanging; 5. and a nut.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, a fixing structure of a fender panel of an automobile comprises a bolt 3, a nut 5 and a sliding sleeve 4, wherein a connecting hole 11 is formed in the fender panel 1, the sliding sleeve 4 is arranged in the connecting hole 11 of the fender panel 1, as shown in fig. 3 and 4, the sliding sleeve 4 comprises an inner bushing 41 and an outer bushing 42, one end of the outer bushing 42 is sleeved at one end of the inner bushing 41 and is fixedly connected through tight fit, the other ends of the outer bushing 42 and the inner bushing 41 are both turned over outwards to form a positioning flange 43, the positioning flanges 43 are both annular, the edge of the connecting hole 11 of the fender panel 1 is partially embedded between the two positioning flanges 43, namely, the two positioning flanges 43 are respectively positioned at the inner side and the outer side of the fender panel 1, the head of the bolt 3 is circumferentially provided with a locking flange 31, a through hole 21 is formed in the automobile body 2, the bolt 3 sequentially passes through the inner bushing 41 and the through, the outer side face of the positioning flanging 43 of the outer bushing 42 is tightly pressed on the side face of the vehicle body 2, the fender 1 is made of plastics, and the fender 1 can slide relative to the sliding sleeve 4 under the conditions of thermal expansion and cold contraction.

Specifically, the connection hole 11 is a strip-shaped hole, the length of the cross section of the connection hole 11 is 2 times of the width, the width of the cross section of the connection hole 11 is larger than the outer diameter of the outer bushing 42, and the difference between the width of the cross section of the connection hole 11 and the outer diameter of the outer bushing 42 is 0.2 mm. The outer side face of the fender 1 is provided with a boss 12 arranged around the connecting hole 11, the distance between the two positioning flanges 43 is larger than the thickness of the fender 1 at the position of the boss 12, and the difference between the distance between the two positioning flanges 43 and the thickness of the fender 1 at the position of the boss 12 is 0.6 mm. The inner edge of the end of the outer bushing 42 away from the positioning flange 43 has an inner chamfer 421 in the circumferential direction, and the outer edge of the end of the inner bushing 41 away from the positioning flange 43 has an outer chamfer 411 in the circumferential direction.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms fender 1, attachment hole 11, boss 12, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a car fender's fixed knot constructs, includes bolt (3) and sets up connecting hole (11) on fender (1), its characterized in that, fixed knot constructs still includes sliding sleeve (4), sliding sleeve (4) set up in connecting hole (11) of fender (1), and above-mentioned bolt (3) pass sliding sleeve (4) and lock sliding sleeve (4) on automobile body (2), the both ends of sliding sleeve (4) all have with sliding sleeve (4) axial spacing location turn-ups (43) in connecting hole (11), have the clearance between sliding sleeve (4) outer peripheral face and connecting hole (11) pore wall.

2. A fender panel fixing structure according to claim 1, wherein the attachment hole (11) is a strip-shaped hole, and a cross-sectional width of the attachment hole (11) is larger than an outer diameter of the slide bush (4).

3. A fender panel fixing structure according to claim 2, wherein the difference between the width of the cross section of the attachment hole (11) and the outer diameter of the slide bush (4) is 0.1mm to 0.4mm, and the length of the cross section of the attachment hole (11) is 1.5 times to 3 times the width.

4. A fixing structure of an automobile fender panel according to claim 1, 2 or 3, wherein the sliding sleeve (4) includes an inner bushing (41) and an outer bushing (42), a sleeve of the outer bushing (42) is provided at one end of the inner bushing (41) and is fixedly connected through a tight fit, the other ends of the outer bushing (42) and the inner bushing (41) are both turned over outwards to form the above positioning flange (43), and the edge portion of the connecting hole (11) of the fender panel (1) is embedded between the two positioning flanges (43).

5. A fender panel fixing structure according to claim 4, wherein the distance between the positioning beads (43) is larger than the thickness of the fender panel (1).

6. A fender panel fixing structure according to claim 5, wherein the difference between the distance between the positioning beads (43) and the thickness of the fender panel (1) is 0.4mm to 0.8 mm.

7. A fixing structure of a fender panel according to claim 4, wherein an inner peripheral edge of an end of the outer liner (42) remote from the positioning flange (43) has an inner chamfer (421) in a circumferential direction, and an outer peripheral edge of an end of the inner liner (41) remote from the positioning flange (43) has an outer chamfer (411) in a circumferential direction.

8. A fender panel fixing structure according to claim 4, wherein the bolt (3) has a locking flange (31) at a head portion thereof in a circumferential direction, the locking flange (31) is pressed against an outer side surface of the positioning flange (43) of the inner bush (41), and the outer side surface of the positioning flange (43) of the outer bush (42) is pressed against a side surface of the vehicle body (2) by the locking flange (31).

9. A fender panel fixing structure according to claim 1, 2 or 3, wherein the vehicle body (2) is provided with a through hole (21), and the bolt (3) is fastened by a nut (5) after sequentially passing through the sliding sleeve (4) and the through hole (21).

10. A fixing structure of a fender panel according to claim 1, 2 or 3, wherein the fender panel (1) is made of plastic.