CN212055417U

CN212055417U - Expansion screw for car-repairing gecko

Info

Publication number: CN212055417U
Application number: CN201922454074.3U
Authority: CN
Inventors: 张雅欣; 赖绣奇
Original assignee: Ningbo Anwang Special Fastener Co ltd
Current assignee: Ningbo Anwang Special Fastener Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-12-01
Anticipated expiration: 2029-12-28

Abstract

The utility model relates to a gecko inflation screw is repaiied to car has related to fastener technical field, has solved the problem that inflation screw is low in wall body department installation intensity, and its technical scheme main points gecko inflation screw is repaiied to car, establish including screw rod, nut, cover expansion tube cover on the screw rod, the screw rod has been seted up at last and has been run through the injecting glue passageway of screw rod, the injecting glue passageway is followed the length direction of screw rod is seted up, the screw rod set up on its outside wall a plurality of with the through-hole that the injecting glue passageway is linked together. The utility model discloses have the effect of strengthening the expansion bolts installation intensity on the wall body.

Description

Expansion screw for car-repairing gecko

Technical Field

The utility model belongs to the technical field of the technique of fastener and specifically relates to a gecko inflation screw is repaiied to car.

Background

The expansion screw is generally a metal expansion screw, and the expansion screw is fixed by utilizing the wedge-shaped slope to promote expansion to generate friction bond force so as to achieve the fixing effect. One end of the screw is provided with threads, and the other end of the screw is provided with conicity. The outer surface of the wall is covered by an iron sheet (some steel pipes), a half of an iron sheet cylinder (steel pipe) is provided with a plurality of notches, the iron sheet cylinder (steel pipe) and the notches are plugged into a hole drilled on the wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the iron sheet cylinder, the iron sheet cylinder is expanded and then is tightly fixed on the wall, and the wall is generally used for fastening protective guards, rain awnings, air conditioners and the like on materials such as cement, bricks and the like.

The utility model with the authorization notice number of CN208417171U discloses an adjusting expansion screw, which comprises a screwing end, a supporting end and an expansion screw main body, the twisting end is arranged at the top end of the expansion screw main body, the four corners of the inner cavity of the twisting end are uniformly and equidistantly provided with a first separation frame, a second separation frame, a third separation frame and a fourth separation frame, and the centers of the first separating frame, the second separating frame, the third separating frame and the fourth separating frame are all provided with central grooves, one side of the twisting end is connected with a connecting frame, the side end of the connecting frame is fixed with a rotating block, one side of the inner cavity of the rotating block is provided with a first pin head, a second nail head is welded at the front end of the first nail head, a third nail head is welded at the front end of the second nail head, the outer end of the rotating block is sleeved with a placing frame, a sleeve is arranged at the side end of the placing frame, one side of the sleeve is fixed with a supporting end, and an expansion end is arranged at the front end of the supporting end.

The above prior art solutions have the following drawbacks: when the expansion screw is installed on the wall, if the load is in large vibration, the expansion screw may be loosened at the wall.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a gecko expansion screw is repaiied to car has the effect of strengthening expansion screw installation intensity on the wall body.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a car is repaiied gecko inflation screw, includes screw rod, nut and cover and is established the inflation pipe box on the screw rod, set up on the screw rod and run through the screw rod and make things convenient for the injecting glue passageway that the fixed glue was injected into, the injecting glue passageway is seted up along the length direction of screw rod, the screw rod set up a plurality of through-holes that are linked together with the injecting glue passageway on its lateral wall.

Through adopting above-mentioned technical scheme, the injecting glue passageway is annotated to the fixed glue and flow into in the through-hole that is linked together with the injecting glue passageway for the fixed glue has been filled in the clearance between screw rod and expansion pipe box, the fixed glue after solidifying has increased the adhesion between screw rod and the expansion pipe box, the probability that the screw rod rocked in expansion pipe box department has been reduced, the stability of screw rod in wall body department has been increased, thereby reduced because the screw rod rocks the probability that leads to the expansion pipe box to rock in the wall body, the probability that the expansion screw pine takes off in wall body department has been reduced.

The utility model discloses further set up to, a plurality of incisions have been seted up to expansion pipe box circumference on its outside wall, the incision is followed expansion pipe box's length direction sets up, per two be formed with deformation portion between the incision, the through-hole with the incision one-to-one, the through-hole with the incision is just right.

By adopting the technical scheme, the expansion pipe sleeve is more convenient to deform due to the arrangement of the notches, and the installation difficulty of the expansion screw on the wall body is reduced; meanwhile, the through hole and the notch are opposite to each other, so that the fixing glue is injected into a gap between the wall body and the expansion pipe sleeve, the probability that the expansion pipe sleeve shakes at the wall body is further reduced, the stability of the expansion pipe sleeve at the wall body is improved, and the probability that the expansion screw is loosened is reduced.

The utility model discloses further set up to, four through-holes have been seted up altogether on the screw rod, and a plurality of through-holes are followed the even interval arrangement of lateral wall circumference of screw rod.

Through adopting above-mentioned technical scheme, the setting up of a plurality of through-holes makes the fixed glue when pouring into, and the fixed glue is more even of distribution in the wall body, has promoted the installation stability of inflation screw in wall body department.

The utility model discloses further set up to, the screw rod is keeping away from the one end of nut has big footpath section, seted up in the big footpath section with the spacing lug of incision one-to-one, during deformation portion deformation, spacing lug is followed notched length direction slides.

Through adopting above-mentioned technical scheme, the limiting lug slides along notched length direction on the major diameter section and has reduced the probability that takes place relative rotation between screw rod and the expansion pipe sleeve to reduced the staff when rotatory nut, screw rod and nut take place synchronous pivoted probability, reduced the installation degree of difficulty of expansion screw.

The utility model discloses further set up to, the expansion pipe box is in the incision is kept away from the confession has been seted up to the one end of nut the spacing draw-in groove that spacing lug card was gone into, the expansion pipe box cover is located during the screw rod, spacing lug card is gone into spacing draw-in groove.

By adopting the technical scheme, the limiting lug is clamped into the limiting clamping groove, so that the limiting lug is convenient to align with the notch, and the probability of dislocation between the limiting lug and the notch is reduced.

The utility model discloses set up to, spacing draw-in groove is followed the nut to the cross section increase of expansion pipe box direction.

Through adopting above-mentioned technical scheme, spacing draw-in groove has reduced the degree of difficulty that spacing lug card goes into spacing draw-in groove to the cross section increase of expansion pipe box direction along the nut.

The utility model discloses further set up to, spacing lug is the hemisphere.

Through adopting above-mentioned technical scheme, spacing lug is the hemisphere and has reduced the stress concentration of spacing lug department to the probability that spacing lug takes place the damage has been reduced.

The utility model discloses further set up to, the cover is equipped with the gasket on the screw rod, the nut install in during the screw rod, the nut with the gasket butt.

Through adopting above-mentioned technical scheme, the setting up of gasket has reduced the nut and has directly touched the probability with the wall body in the installation to the probability that the expansion bolts produced the harm to the wall body has been reduced.

To sum up, the utility model discloses following beneficial effect has:

1. a gecko expansion screw for car repair comprises a screw rod, a nut and an expansion pipe sleeve sleeved on the screw rod, wherein fixing glue is injected into a glue injection channel and flows into a through hole communicated with the glue injection channel, so that the probability of the screw rod swinging at the expansion pipe sleeve is reduced, the stability of the screw rod at a wall body is increased, the probability of the expansion pipe sleeve swinging in the wall body due to the swinging of the screw rod is reduced, and the probability of loosening of the expansion screw at the wall body is reduced;

2. the limiting lug on the large-diameter section slides along the length direction of the notch, so that the probability of relative rotation between the screw and the expansion pipe sleeve is reduced, the probability of synchronous rotation between the screw and the nut when a worker rotates the nut is reduced, and the installation difficulty of the expansion screw is reduced;

3. the limiting convex blocks are clamped into the limiting clamping grooves, so that the limiting convex blocks are conveniently aligned with the notches, and the probability of dislocation between the limiting convex blocks and the notches is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic view of the structure at the expansion pipe sleeve.

In the figure, 1, a screw; 11. a large diameter section; 111. a limiting bump; 12. a glue injection channel; 13. a through hole; 2. a nut; 3. an expansion pipe sleeve; 31. cutting; 32. a deformation section; 33. a limiting clamping groove; 4. and (7) a gasket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a gecko expansion screw is repaiied to car, establish expansion pipe box 3 on screw rod 1 including screw rod 1, nut 2 and cover, the one end that nut 2 was kept away from to screw rod 1 is located to expansion pipe box 3 cover, and screw rod 1 has big footpath section 11 at the tip of keeping away from nut 2.

Referring to fig. 1 and 2, a glue injection channel 12 penetrating through the screw 1 is formed in the screw 1, and the glue injection channel 12 is formed along the length direction of the screw 1. A plurality of through holes 13 communicated with the glue injection channel 12 are formed in the outer side wall of the screw rod 1, and the through holes 13 are evenly arranged at intervals along the circumferential direction of the outer side wall of the screw rod 1. In the present embodiment, a total of four through holes 13 are formed.

Referring to fig. 3, the outer side wall of the large diameter section 11 has a limiting protrusion 111 corresponding to the through holes 13, and the limiting protrusion 111 is hemispherical.

Referring to fig. 3, the expansion pipe sleeve 3 is provided with notches 31 corresponding to the limit protrusions 111 one by one at one end facing the large diameter section 11, the notches 31 are provided along the length direction of the expansion pipe sleeve 3, and the expansion pipe sleeve 3 is provided with a deformation portion 32 between every two adjacent notches 31.

Referring to fig. 3, the expansion pipe sleeve 3 is provided with limiting clamping grooves 33 for the limiting protrusions 111 to be clamped in on two sides of the end portion of the large-diameter section 11 of the notch 31, and when the expansion pipe sleeve 3 is sleeved on the screw rod 1, the limiting protrusions 111 are clamped in the limiting clamping grooves 33, so that the probability of relative rotation between the expansion pipe sleeve 3 and the screw rod 1 is reduced. The cross section of the limiting clamping groove 33 in the direction from the nut 2 to the expansion pipe sleeve 3 is increased, so that the limiting lug 111 is more convenient to clamp into the clamping groove.

Referring to fig. 2 and 3, when the limiting bump 111 is clamped at a position where the expansion pipe sleeve 3 is far away from the large-diameter section 11 at the limiting clamping groove 33, the through hole 13 is opposite to the notch 31, the fixing glue flows into the notch 31 through the through hole 13 along the glue injection channel 12, the solidified fixing glue increases the stability of the expansion screw installed at the wall, meanwhile, the stability between the expansion pipe sleeve 3 and the screw rod 1 is also increased, and the probability of shaking of the screw rod 1 at the expansion pipe sleeve 3 is reduced.

Referring to fig. 1 and 2, in order to reduce the possibility that the expansion screw is mounted, the screw 1 is sleeved with the gasket 4, and when the deformation part 32 is deformed by mounting the screw 1, the nut 2 abuts against the gasket 4, so that the nut 2 abuts against the wall and then rotates relatively.

The implementation principle of the embodiment is as follows:

1. installing the expansion screw at a preset position, rotating the nut 2 to enable the screw rod 1 to move towards the nut 2 along the large-diameter section 11, expanding the deformation part 32 by the large-diameter section 11 to enable the diameter of the cross section of the expansion pipe sleeve 3 to be enlarged to complete the fixation of the expansion screw, injecting fixing glue into the glue injection channel 12, injecting the fixing glue into the through hole 13 along the glue injection channel 12 and enabling the fixing glue to flow to the notch 31, so that the installation position of the expansion screw is expanded, and the installation stability of the expansion screw is improved;

2. the one-to-one correspondence of the through holes 13 and the notches 31 enables the fixing glue to be more uniform when the mounting position of the expansion screw is diffused, so that the adhesion area of the expansion screw at the mounting position is increased;

1. the arrangement of the limiting convex block 111 reduces the probability of relative rotation between the screw rod 1 and the expansion pipe sleeve 3, and reduces the probability of synchronous rotation of the screw rod 1 and the nut 2 when the nut 2 is rotated, so that the installation difficulty of the expansion screw is reduced.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a gecko inflation screw is repaiied to car, includes screw rod (1), nut (2) and cover and establishes expansion pipe box (3) on screw rod (1), its characterized in that: the glue injection device is characterized in that a glue injection channel (12) which penetrates through the screw (1) and facilitates injection of fixing glue is formed in the screw (1), the glue injection channel (12) is formed in the length direction of the screw (1), and a plurality of through holes (13) communicated with the glue injection channel (12) are formed in the outer side wall of the screw (1).

2. The anchor expansion screw of claim 1, wherein: the expansion pipe sleeve (3) is provided with a plurality of notches (31) in the circumferential direction on the outer side wall, the notches (31) are arranged along the length direction of the expansion pipe sleeve (3), a deformation part (32) is formed between every two notches (31), the through holes (13) correspond to the notches (31) one by one, and the through holes (13) are opposite to the notches (31).

3. The anchor expansion screw of claim 2, wherein: four through holes (13) are formed in the screw rod (1), and the through holes (13) are uniformly arranged at intervals along the circumferential direction of the outer side wall of the screw rod (1).

4. The anchor expansion screw of claim 3, wherein: screw rod (1) is keeping away from the one end of nut (2) has big footpath section (11), seted up on big footpath section (11) with spacing lug (111) of incision (31) one-to-one, deformation portion (32) when deformation, spacing lug (111) are followed the length direction of incision (31) slides.

5. The anchor expansion screw of claim 4, wherein: the expansion pipe sleeve (3) is in the one end that incision (31) kept away from nut (2) is seted up the confession spacing draw-in groove (33) that spacing lug (111) card was gone into, expansion pipe sleeve (3) cover is located when screw rod (1), spacing lug (111) card is gone into spacing draw-in groove (33).

6. The anchor expansion screw of claim 5, wherein: the cross section of the limiting clamping groove (33) along the direction from the nut (2) to the expansion pipe sleeve (3) is enlarged.

7. The anchor expansion screw of claim 6, wherein: the limiting convex block (111) is hemispherical.

8. The anchor expansion screw of claim 7, wherein: the screw rod (1) is sleeved with a gasket (4), the nut (2) is installed on the screw rod (1), and the nut (2) is abutted to the gasket (4).