Self-locking fastener for connecting automobile body

Abstract

The utility model discloses a self-locking fastener for connecting an automobile body, which comprises a bolt, a cushion block is mounted at the upper end of the outer surface of the bolt in a matched manner, a nut is mounted on the outer surface of the bolt in a threaded manner, and the self-locking fastener further comprises a locking mechanism; the locking mechanism comprises first sliding grooves, inserting columns, inserting grooves, limiting rings, second sliding grooves, sliding columns and check blocks, the first sliding grooves which are evenly distributed are formed in the inner wall of the cushion block, the inserting columns are slidably connected into the first sliding grooves, the inserting grooves which are evenly distributed are formed in the outer surfaces of the bolts, and the ends, close to the bolts, of the inserting columns are inserted into the inserting grooves in the same side. The side, away from the bolt, of the outer surface of the inserting column is fixedly sleeved with a limiting ring, and a second sliding groove is formed in the top wall of the first sliding groove. And the situation that the automobile body is unstable in connection due to the fact that the bolt and the connecting piece are slipped due to vibration of the automobile body is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile assembly, specifically to a self-locking fastener for automobile body connection. BACKGROUND

[0002] With the development of science and technology and the improvement of people's living standards, more and more cars enter people's life and work, and the automobile fastener is used for combining and assembling the automobile parts.

[0003] The existing automobile fastener is usually composed of a bolt and a nut. When the fastener is used, the bolt penetrates two automobile parts, and then the nut is tightened from one end of the bolt, so that the nut and the bolt clamp and fix the two automobile parts.

[0004] The existing automobile fastener has the following problems: the automobile will vibrate during driving, and the bolt may be damaged due to vibration, resulting in slippage between the bolt and the connecting piece, which causes unstable connection of the automobile body. Therefore, we propose a self-locking fastener for automobile body connection. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of overcoming the defects of the prior art and provides a self-locking fastener for automobile body connection. The bolt and the connecting piece are locked and fixed by the locking mechanism, which avoids the unstable connection of the automobile body caused by the slippage between the bolt and the connecting piece due to the vibration of the automobile body, and effectively solves the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a self-locking fastener for automobile body connection, comprising a bolt, a pad block cooperatively installed on the outer surface of the bolt, a nut threadedly installed on the outer surface of the bolt, and a locking mechanism.

[0007] The locking mechanism comprises a sliding groove one, a plug column, a plug groove, a limiting ring, a sliding groove two, a sliding column and a stop block. The inner wall of the pad block is provided with evenly distributed sliding grooves one. The plug column is slidably connected inside the sliding groove one. The outer surface of the bolt is provided with evenly distributed plug grooves. The end of the plug column close to the bolt is inserted into the inside of the plug groove on the same side. The outer surface of the plug column away from the bolt is fixedly provided with a limiting ring. The top wall of the sliding groove one is provided with a sliding groove two. The sliding column is slidably connected inside the sliding groove two. The lower end of the sliding column is provided with a stop block. The lower end of the stop block away from the bolt is inclined. The bolt and the connecting piece are locked and fixed by the locking mechanism, which avoids the unstable connection of the automobile body caused by the slippage between the bolt and the connecting piece due to the vibration of the automobile body.

[0008] Further, the locking mechanism further comprises a compression ring, a spring one and a push block, the outer surface of the insertion column is fixedly sleeved with the compression ring near the side of the bolt, the outer surface of the insertion column is movably sleeved with the spring one, the spring one is located between the inner wall of the sliding groove one and the side of the adjacent compression ring near the bolt, and the end of the insertion column away from the bolt is provided with the push block, so that the locking mechanism is restored.

[0009] Further, the locking mechanism further comprises a spring two, the outer surface of the sliding column is movably sleeved with the spring two, and the spring two is located between the upper surface of the adjacent stop block and the top wall of the sliding groove two, so that the locking mechanism is driven to normally work.

[0010] Further, the locking mechanism further comprises a pull ring and a handle, the upper end of the four sliding columns is fixedly connected with the lower surface of a pull ring, and the upper surface of the pull ring is provided with the handles which are uniformly distributed, so that the locking of the bolt is released.

[0011] Further, the lower end of the bolt is provided with a limiting mechanism, the limiting mechanism comprises a notch, a moving rod, a limiting block and a spring three, the outer surface of the lower end of the bolt is provided with the notches which are uniformly distributed on the left and right sides, the moving rod is movably connected in the notch, the end of the moving rod away from the center of the bolt is provided with the limiting block, the lower surface of the limiting block is inclined, the outer surface of the moving rod is movably sleeved with the spring three, and the spring three is located between the side of the adjacent limiting block near the center of the bolt and the inner wall of the notch, so that the nut is limited.

[0012] Further, the limiting mechanism further comprises a limiting groove, a push rod and a push piece, the lower surface of the bolt is provided with the limiting grooves on the left and right sides, the push rod is movably connected in the limiting groove, the outer surface of the push rod is provided with the sliding openings which are uniformly distributed, the side of the moving rod near the center of the bolt is movably connected in the inner portion of the adjacent sliding opening, and the lower end of the push rod is provided with the push piece, so that the limiting of the nut is released.

[0013] Further, the lower surface of the pad block is fixedly connected with the positioning blocks which are uniformly distributed, so that the pad block is installed.

[0014] Compared with the prior art, the automobile body connecting self-locking fastener has the following advantages:

[0015] The push block is pushed to drive the insertion column to be inserted into the insertion slot, the lower end of the stop block away from the bolt is inclined, the limiting ring is moved while pushing the stop block to move upwards, until the limiting ring passes through the stop block, the spring two pushes the stop block to move downwards to pass through the limiting ring and clamp the insertion column in the insertion slot, so that the bolt and the connecting piece are fixed together through the pad block, and the situation that the bolt and the connecting piece are slided to cause unstable connection of the automobile body due to vibration of the automobile body is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1A structure schematic view of the utility model;

[0017] Figure 2 A structure schematic view of the utility model is sectioned;

[0018] Figure 3 A structure schematic view of the utility model is enlarged at A place;

[0019] Figure 4 A structure schematic view of the utility model is enlarged at B place;

[0020] Figure 5 A structure schematic view of the utility model is enlarged at C place.

[0021] In the drawing: 1 bolt, 2 pad, 3 locking mechanism, 301 sliding groove one, 302 insertion column, 303 insertion groove, 304 limit ring, 305 sliding groove two, 306 sliding column, 307 stop block, 308 pressing ring, 309 spring one, 310 push block, 311 spring two, 312 pull ring, 313 handle, 4 nut, 5 limit mechanism, 51 notch, 52 moving rod, 53 limit block, 54 spring three, 55 limit slot, 56 lever, 57 push piece, 6 positioning block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5The embodiment provides a technical scheme: a self-locking fastener for automobile body connection, which comprises a bolt 1, a gasket 2 which is matched and installed on the upper end of the outer surface of the bolt 1, and a nut 4 which is threadedly installed on the outer surface of the bolt 1, further comprising a locking mechanism 3, the lower end of the bolt 1 is provided with a limiting mechanism 5, the limiting mechanism 5 comprises notches 51, moving rods 52, limiting blocks 53 and springs three 54, the left and right sides of the lower end of the outer surface of the bolt 1 are both provided with uniformly distributed notches 51, the moving rods 52 are both slidably connected in the notches 51, the lower end of the moving rods 52 is provided with the limiting blocks 53, the lower surface of the limiting blocks 53 is inclined, the outer surface of the moving rods 52 is movably sleeved with the springs three 54, the springs three 54 are all located between the inner wall of the notch 51 and the side of the adjacent limiting block 53 close to the center of the bolt 1, the limiting mechanism 5 further comprises limiting grooves 55, push rods 56 and push pieces 57, the left and right sides of the lower surface of the bolt 1 are both provided with the limiting grooves 55, the push rods 56 are both slidably connected in the limiting grooves 55, the outer surface of the push rods 56 is provided with uniformly distributed sliding openings, the side of the moving rods 52 close to the center of the bolt 1 is slidably connected in the inner side of the adjacent sliding opening, the lower end of the push rods 56 is provided with the push pieces 57, the lower surface of the gasket 2 is fixedly connected with uniformly distributed positioning blocks 6, workers combine two connecting pieces, then insert the positioning blocks 6 into the positioning grooves on the connecting pieces, so that the gasket 2 is attached to the connecting pieces, then insert the bolt 1 through the opening of the gasket 2 into the connecting hole between the two connecting pieces, (the center axis of the bolt 1 and the opening of the gasket 2 is coincident), then rotate the bolt 1, then sleeve the nut 4 on the outer surface of the bolt 1 through the lower end of the bolt 1, then move the nut 4 upwards until the nut 4 is moved to the threaded position of the bolt 1, then rotate the nut 4, so that the nut 4 is threadedly installed between the bolt 1, because the lower surface of the limiting block 53 is inclined, so the nut 4 pushes the limiting block 53 to move to the center of the bolt 1 at the same time of moving, until the nut 4 reaches the appropriate position through the limiting block 53, under the action of the rebound force of the spring three 54, the spring three 54 pushes the limiting block 53 to move to clamp the nut 4, when the nut 4 needs to be removed, the push piece 57 drives the push rod 56 to move in the limiting groove 55, the push rod 56 drives the limiting block 53 to move to the direction close to the center of the bolt 1 through the moving rod 52, then the nut 4 can be removed;

[0024] The locking mechanism 3 comprises a sliding groove one 301, an insertion column 302, an insertion groove 303, a limiting ring 304, a sliding groove two 305, a sliding column 306 and a stop block 307, the inner wall of the cushion block 2 is provided with uniformly distributed sliding groove ones 301, the inner part of the sliding groove one 301 is movably connected with the insertion column 302, the outer surface of the bolt 1 is provided with uniformly distributed insertion grooves 303, the end of the insertion column 302 close to the bolt 1 is inserted into the inner part of the insertion groove 303 on the same side, the outer surface of the insertion column 302 is fixedly sleeved with the limiting ring 304 away from the bolt 1, the top wall of the sliding groove one 301 is provided with the sliding groove two 305, the inner part of the sliding groove two 305 is movably connected with the sliding column 306, the lower end of the sliding column 306 is provided with the stop block 307, the lower end of the stop block 307 away from the bolt 1 is inclined, the locking mechanism 3 further comprises a pressing ring 308, a spring one 309 and a push block 310, the outer surface of the insertion column 302 is fixedly sleeved with the pressing ring 308 away from the bolt 1, the outer surface of the insertion column 302 movably sleeved with the spring one 309, the spring one 309 is located between the inner wall of the sliding groove one 301 and the side of the adjacent pressing ring 308 close to the bolt 1, the end of the insertion column 302 away from the bolt 1 is provided with the push block 310, the locking mechanism 3 further comprises a spring two 311, the outer surface of the sliding column 306 movably sleeved with the spring two 311, the spring two 311 is located between the upper surface of the adjacent stop block 307 and the top wall of the sliding groove two 305, the locking mechanism 3 further comprises a pull ring 312 and a handle 313, the upper end of the four sliding columns 306 is fixedly connected with the lower surface of one pull ring 312, the upper surface of the pull ring 312 is provided with uniformly distributed handles 313, until the insertion groove 303 is aligned with the insertion column 302, then the push block 310 is pushed, the push block 310 drives the insertion column 302 to move along the sliding groove one 301 to the direction close to the bolt 1, so that the limiting ring 304 works and moves, until the insertion column 302 is inserted into the insertion groove 303, because the lower end of the stop block 307 away from the bolt 1 is inclined, so the limiting ring 304 pushes the stop block 307 to move upward along the sliding groove two 305 at the same time of moving, until the limiting ring 304 passes through the stop block 307, the spring two 311 pushes the stop block 307 to move downward through the limiting ring 304 to clamp the insertion column 302 in the insertion groove 303, at this time, the pressing ring 308 extrudes the spring one 309, so that the bolt 1 and the connecting piece are fixed together through the cushion block 2, when the locking needs to be released, the pull ring 312 is pulled through the handle 313, the pull ring 312 drives the stop block 307 to move upward through the sliding column 306, the spring one 309 pushes the pressing ring 308 to move away from the bolt 1, so that the insertion column 302 comes out of the insertion groove 303, thereby releasing the fixed relationship between the cushion block 2 and the bolt 1.

[0025] The working principle of the self-locking fastener for connecting automobile bodies is as follows: the staff combines the two connecting pieces, then inserts the positioning block 6 into the positioning groove on the connecting piece, so that the cushion block 2 is attached to the connecting piece, then inserts the bolt 1 through the opening of the cushion block 2 into the connecting hole between the two connecting pieces (the central axis of the bolt 1 and the opening of the cushion block 2 is coincident), then rotates the bolt 1 until the insertion slot 303 is aligned with the insertion column 302, then pushes the push block 310, the push block 310 drives the insertion column 302 to move along the sliding groove one 301 towards the bolt 1, so that the limiting ring 304 works and moves until the insertion column 302 is inserted into the insertion slot 303, because the lower end of the stop block 307 away from the side of the bolt 1 is inclined, the limiting ring 304 pushes the stop block 307 to move upwards along the sliding groove two 305 at the same time of moving, until the limiting ring 304 passes through the stop block 307, the rebound force of the spring two 311 pushes the stop block 307 to move downwards through the limiting ring 304 to clamp the insertion column 302 in the insertion slot 303, at this time, the pressing ring 308 extrudes the spring one 309, so that the bolt 1 and the connecting piece are fixed together through the cushion block 2, when the locking needs to be released, the pull ring 312 is pulled through the handle 313, the pull ring 312 drives the stop block 307 to move upwards through the sliding column 306, the rebound force of the spring one 309 pushes the pressing ring 308 to move away from the bolt 1, so that the insertion column 302 comes out of the insertion slot 303, thereby releasing the fixed relationship between the cushion block 2 and the bolt 1, then the nut 4 is sleeved on the outside of the bolt 1 through the lower end of the bolt 1, then the nut 4 is moved upwards until it is moved to the threaded position of the bolt 1, then the nut 4 is rotated, so that the nut 4 is screwed between the bolt 1, because the lower surface of the limiting block 53 is inclined, the nut 4 pushes the limiting block 53 to move towards the center of the bolt 1 at the same time of moving, until the nut 4 passes through the limiting block 53 to reach the appropriate position, under the rebound force of the spring three 54, the spring three 54 pushes the limiting block 53 to move to clamp the nut 4, the nut is auxiliary fixed, when the nut 4 needs to be removed, the push rod 56 is driven to move in the limiting groove 55 through the push piece 57, the push rod 56 drives the limiting block 53 to move towards the center of the bolt 1 through the moving rod 52, then the nut 4 can be removed.

[0026] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, any equivalent structure or equivalent process transformation in the utility model specification and the attached drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A self-locking fastener for automobile body connection, comprising a bolt (1), a grommet (2) is fitted on the outer surface of the bolt (1) at the upper end, and a nut (4) is threaded on the outer surface of the bolt (1), characterized in that: Also includes locking mechanism (3); The locking mechanism (3) further includes a compression ring (308), a spring (309) and a push block (310), the outer surface of the insertion column (302) is fixed with a compression ring (308) on the side close to the bolt (1), the outer surface of the insertion column (302) is movably sleeved with a spring (309), the spring (309) is located between the inner wall of the sliding groove (301) and the side of the adjacent compression ring (308) close to the bolt (1), and the end of the insertion column (302) away from the bolt (1) is provided with a push block (310).

2. A self-locking fastener for use in automotive body construction according to claim 1, wherein: The locking mechanism (3) further includes a spring (311), the outer surface of the sliding column (306) is movably sleeved with a spring (311), and the spring (311) is located between the top surface of the adjacent stop block (307) and the top wall of the sliding groove (305).

3. A self-locking fastener for use in automotive body construction according to claim 1, wherein: The locking mechanism (3) further includes a pull ring (312) and a handle (313), the upper end of the four sliding columns (306) is fixedly connected with the lower surface of a pull ring (312), and the upper surface of the pull ring (312) is provided with uniformly distributed handles (313).

4. A self-locking fastener for use in automotive body construction according to claim 1 wherein: The lower end of the bolt (1) is provided with a limiting mechanism (5), the limiting mechanism (5) includes a notch (51), a moving rod (52), a limiting block (53) and a spring (54), the outer surface of the bolt (1) is provided with a notch (51) on the left and right sides of the lower end, the inner surface of the notch (51) is movably connected with a moving rod (52), the end of the moving rod (52) away from the center of the bolt (1) is provided with a limiting block (53), the lower surface of the limiting block (53) is inclined, the outer surface of the moving rod (52) is movably sleeved with a spring (54), and the spring (54) is located between the inner wall of the notch (51) and the side of the adjacent limiting block (53) close to the center of the bolt (1).

5. A self-locking fastener for use in automotive body construction according to claim 1 wherein: ​ 6. A self-locking fastener for use in automotive body construction according to claim 5 wherein: The limiting mechanism (5) further comprises limiting grooves (55), push rods (56) and push pieces (57), limiting grooves (55) are arranged on the lower surface of the bolt (1) on both sides, push rods (56) are slidably connected in the limiting grooves (55), the outer surfaces of the push rods (56) are uniformly provided with sliding openings, the side of the moving rod (52) close to the center of the bolt (1) is slidably connected in the adjacent sliding opening, and the lower end of the push rod (56) is provided with a push piece (57).

7. A self-locking fastener for use in automotive body construction according to claim 1 wherein: The lower surface of the cushion block (2) is fixedly connected with uniformly distributed positioning blocks (6).

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