CN210660917U

CN210660917U - Expansion bolt capable of improving fixing effect

Info

Publication number: CN210660917U
Application number: CN201921039554.7U
Authority: CN
Inventors: 朱玉传
Original assignee: Wenzhou Pengsheng Auto Parts Co Ltd
Current assignee: Wenzhou Pengsheng Auto Parts Co Ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-06-02
Anticipated expiration: 2029-07-05

Abstract

The utility model discloses an expansion bolt that can improve fixed effect, including the bolt body, the lower end inboard of the bolt body is provided with the installation cavity, the fixed miniature bearing that is provided with in installation cavity, the vertical rotation is provided with the screw rod on the miniature bearing, the fixed turn round that is provided with in upper end of screw rod, equal vertical spout that is provided with on the inner wall around the bolt body, set interior nut on the screw rod, the equal vertical U-shaped elastic steel sheet that is provided with in the inside left and right sides of the bolt body. The utility model discloses when the bolt body under needs are dismantled, only need the reverse screw rod for interior nut rises, then U-shaped elastic steel sheet just can the elasticity recover the bolt body that resets, conveniently directly takes out the bolt body, when needs dismouting individual device, will turn round earlier and the screw between the screw rod is dismantled down, makes the separation of turning round, then falls down the bottom of bolt body bottom dismantlement, directly takes out from the screw rod through miniature bearing, realizes the split, also conveniently assembles simultaneously.

Description

Expansion bolt capable of improving fixing effect

Technical Field

The utility model relates to a bolt technical field specifically is an expansion bolts that can improve fixed effect.

Background

The bolt is a mechanical part, a cylindrical threaded fastener matched with a nut is a fastener composed of a head part and a screw (a cylinder with external threads), and the fastener is required to be matched with the nut and used for fastening and connecting two parts with through holes;

the general bolt has the following disadvantages: when general bolt inserted the complex hole in, all can have small clearance between bolt and the hole, fixed effect will be not good enough like this, and uses general expansion bolts to install, and when dismantling, the dismantlement step is complicated to very difficultly.

Disclosure of Invention

An object of the utility model is to provide an expansion bolts that can improve fixed effect to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an expansion bolt capable of improving a fixing effect comprises a bolt body, wherein the inside of the bolt body is hollow, an installation cavity is formed in the inner side of the lower end head of the bolt body, a miniature bearing is fixedly arranged in the installation cavity, a screw rod is vertically and rotatably connected to the miniature bearing, the upper end head of the screw rod penetrates into the bolt body, the upper end head of the screw rod is fixedly connected with a rotary head through a screw, a cross clamping groove is formed in the upper end face of the rotary head, the rotary head is movably embedded in the end face of the upper end head of the bolt body, and the cross clamping groove is convenient to butt a screwdriver, so that the screw rod is conveniently driven to rotate through the rotary head; the front inner wall and the rear inner wall of the bolt body are both vertically provided with sliding grooves, the screw rod is sleeved with an inner nut through threads, the front side wall and the rear side wall of the inner nut are connected in the sliding grooves in a sliding mode through pulleys, and the inner nut only moves up and down when the screw rod rotates due to the limitation of the linear sliding connection of the sliding grooves and the inner nut; the bolt body is characterized in that strip-shaped through openings are vertically formed in the left side wall and the right side wall of the bolt body, the left side and the right side of the interior of the bolt body are vertically provided with U-shaped elastic steel sheets, one end of each U-shaped elastic steel sheet is welded at the inner bottom of the bolt body, the other end of each U-shaped elastic steel sheet is located at a position close to the corresponding strip-shaped through opening, the width of the inner nut is larger than the distance between the U-shaped elastic steel sheets at the left side and the right side, when the screw rotates to enable the inner nut to move downwards, the inner nut is extruded between the U-shaped elastic steel sheets at the left side and the right side, the U-shaped elastic steel sheets at the left side and the right side can be unfolded, one side of each U-shaped elastic steel sheet close to the corresponding strip-shaped through opening is penetrated out and abutted against the inner wall of a through hole in a part where the, the bolt body can be conveniently and directly drawn out.

Preferably, the end face of the lower end of the bolt body is provided with a bottom cover in a embedded mode, the bottom cover is fixedly connected with the bolt body through screws, and meanwhile the bottom cover is the bottom end portion of the installation cavity.

Preferably, the upper end head of the bolt body is covered with a rubber cover, and two ends of the rubber cover are movably embedded in the end face of the upper end head of the bolt body.

Preferably, the lower side end surface of the inner nut is annularly and movably embedded with balls.

Preferably, the side wall of the U-shaped elastic steel sheet is uniformly welded with convex particles.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in the through-hole of the adapting unit of bolt body cross-under, use the screwdriver to insert in the cross draw-in groove on the change of bolt body end gomphosis, then rotate the change, the screw rod just rotates thereupon, when the restriction of the straight line sliding connection of spout and interior nut leads to the screw rod to rotate, interior nut through screw-thread fit connection only takes place downward rectilinear movement on the screw rod, interior nut extrudees between the U-shaped elastic steel sheet, the U-shaped elastic steel sheet of the left and right sides just can strut, make U-shaped elastic steel sheet one side near the bar mouth of wearing out, conflict on the through-hole inner wall on the part that the bolt body cross-under, reinforcing bolt body and part are connected steadiness;

2. the utility model discloses when the bolt body under needs are dismantled, only need the reverse screw rod for interior nut rises, then U-shaped elastic steel sheet just can the elasticity recover the bolt body that resets, conveniently directly takes out the bolt body, when needs dismouting individual device, will turn round earlier and the screw between the screw rod is dismantled down, makes the separation of turning round, then falls down the bottom of bolt body bottom dismantlement, directly takes out from the screw rod through miniature bearing, realizes the split, also conveniently assembles simultaneously.

Drawings

Fig. 1 is a schematic view of the overall structure of an expansion bolt of the present invention for improving the fastening effect;

fig. 2 is a top view cross-sectional structure diagram of the expansion bolt of the present invention, which can improve the fixing effect, wherein the inner nut and the bolt body are cooperatively connected;

fig. 3 is a top view structural diagram of the head of the expansion bolt of the present invention capable of improving the fixing effect.

In the figure: 1. a bolt body; 2. a micro-bearing; 3. a bottom cover; 4. a mounting cavity; 5. a screw; 6. a U-shaped elastic steel sheet; 7. raised particles; 8. a ball bearing; 9. an inner nut; 10. strip-shaped through holes; 11. turning the head; 12. a rubber cover; 13. a cross clamping groove; 14. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an expansion bolt capable of improving a fixing effect comprises a bolt body 1, wherein the inside of the bolt body 1 is hollow, a mounting cavity 4 is formed in the inner side of the lower end head of the bolt body 1, a miniature bearing 2 is fixedly arranged in the mounting cavity 4, a screw rod 5 is vertically and rotatably connected to the miniature bearing 2 in a cross mode, the upper end head of the screw rod 5 penetrates into the bolt body 1, the upper end head of the screw rod 5 is fixedly connected with a rotary head 11 through a screw, a cross clamping groove 13 is formed in the upper end face of the rotary head 11, the rotary head 11 is movably embedded in the end face of the upper end head of the bolt body 1, and the cross clamping groove 13 facilitates butt joint of a screwdriver, so that the rotary head 11 can drive the; the front inner wall and the rear inner wall of the bolt body 1 are both vertically provided with sliding chutes 14, the screw rod 5 is sleeved with an inner nut 9 through threads, the front side wall and the rear side wall of the inner nut 9 are both in sliding cross connection in the sliding chutes 14 through pulleys, and the inner nut 9 only moves up and down when the screw rod 5 rotates due to the limitation of the linear sliding connection between the sliding chutes 14 and the inner nut 9; the left side wall and the right side wall of the bolt body 1 are both vertically provided with strip-shaped through openings 10, the left side wall and the right side wall inside the bolt body 1 are both vertically provided with U-shaped elastic steel sheets 6, one end of each U-shaped elastic steel sheet 6 is welded at the inner bottom of the bolt body 1, the other end of each U-shaped elastic steel sheet 6 is positioned at a position close to each strip-shaped through opening 10, meanwhile, the width of the inner nut 9 is larger than the distance between the U-shaped elastic steel sheets 6 at the left side and the right side, when the screw 5 rotates to enable the inner nut 9 to move downwards, the inner nut 9 is extruded between the U-shaped elastic steel sheets 6, the U-shaped elastic steel sheets 6 at the left side and the right side can be unfolded, one side of each U-shaped elastic steel sheet 6 close to each strip-shaped through opening 10 is enabled to penetrate out and abut against the inner wall of a through hole on a part where the bolt body 1 is penetrated, the stability of the bolt body 1 and, the bolt body 1 can be conveniently and directly drawn out.

The end face of the lower end of the bolt body 1 is provided with a bottom cover 3 in an embedded mode, the bottom cover 3 is fixedly connected with the bolt body 1 through screws, meanwhile, the bottom cover 3 is the bottom end portion of the installation cavity 4, the installation cavity 4 is conveniently opened through the bottom cover 3, and the miniature bearing 2 is disassembled and assembled.

The upper end head of the bolt body 1 is covered with a rubber cover 12, two ends of the rubber cover 12 are movably embedded in the end face of the upper end head of the bolt body 1, and the rubber cover 12 is used for protecting the rotary head 11 and members in the bolt body 1.

The lower side end surface of the inner nut 9 is annularly and movably embedded with a ball 8, and the ball 8 is convenient for the inner nut 9 to slide relatively when abutting against the U-shaped elastic steel sheet 6.

Protruding particles 7 are uniformly welded on the side wall of the U-shaped elastic steel sheet 6, and the protruding particles 7 are used for enhancing the stability of the through hole inner wall, which is connected with the bolt body 1 in a penetrating mode, and abutted to the U-shaped elastic steel sheet 6.

The working principle is as follows: the utility model discloses a bolt body 1 cross-under to the through-hole of adapting unit after, use the screwdriver to insert in the cross draw-in groove 13 on the gomphosis turn 11 of bolt body 1 end, then rotate turn 11, the screw rod 5 is the rotation thereupon, when the restriction of the sharp sliding connection of spout 14 and interior nut 9 leads to screw rod 5 to rotate, interior nut 9 through screw-thread fit connection on the screw rod 5 only takes place downward rectilinear movement, interior nut 9 extrudes between U-shaped elastic steel sheet 6, the U-shaped elastic steel sheet 6 of the left and right sides just can strut, make U-shaped elastic steel sheet 6 one side near bar wearing hole 10 wear out, conflict on the through-hole inner wall on the part that bolt body 1 cross-under, strengthen the steadiness that bolt body 1 and part are connected, when needing to dismantle bolt body 1, only need reverse screw rod 5, make interior nut 9 rise, then U-shaped elastic steel sheet 6 can the elasticity reset in the bolt body 1, convenient direct taking out the bolt body 1, when needs dismantle and adorn an equipment, will turn round the screw between 11 and the screw rod 5 earlier and dismantle for 11 separation of turning round, then with the bottom 3 dismantlements of 1 bottom of the bolt body, directly take out from screw rod 5 through miniature bearing 2, realize the split, also convenient equipment simultaneously.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An expansion bolt capable of improving fixing effect, which comprises a bolt body (1), and is characterized in that: the bolt is characterized in that an installation cavity (4) is arranged on the inner side of the lower end head of the bolt body (1), a miniature bearing (2) is fixedly arranged in the installation cavity (4), a screw (5) is vertically and rotatably arranged on the miniature bearing (2), the upper end head of the screw (5) penetrates into the bolt body (1), a turn (11) is fixedly arranged on the upper end head of the screw (5), a cross clamping groove (13) is formed in the upper end surface of the turn (11), sliding grooves (14) are vertically formed in the front inner wall and the rear inner wall of the bolt body (1), an inner nut (9) is arranged on the screw (5), the front side wall and the rear side wall of the inner nut (9) are arranged in the sliding grooves (14) in a matching mode, strip penetrating openings (10) are vertically formed in the left side wall and the right side wall of the bolt body (1), U-shaped elastic steel sheets (6) are vertically arranged on, one end of the U-shaped elastic steel sheet (6) is arranged at the inner bottom of the bolt body (1) and the other end of the U-shaped elastic steel sheet is positioned close to the strip-shaped penetrating opening (10).

2. An expansion bolt capable of improving a fixing effect according to claim 1, wherein: the end face of the lower end head of the bolt body (1) is embedded with a bottom cover (3), and the bottom cover (3) is fixedly connected with the bolt body (1).

3. An expansion bolt capable of improving a fixing effect according to claim 1, wherein: the upper end of the bolt body (1) is provided with a rubber cover (12), and two ends of the rubber cover (12) are movably arranged in the end face of the upper end of the bolt body (1).

4. An expansion bolt capable of improving a fixing effect according to claim 1, wherein: the lower side end surface of the inner nut (9) is provided with balls (8) in a surrounding and movable mode.

5. An expansion bolt capable of improving a fixing effect according to claim 1, wherein: the side wall of the U-shaped elastic steel sheet (6) is uniformly provided with raised particles (7).