CN213176355U

CN213176355U - Expansion screw assembly

Info

Publication number: CN213176355U
Application number: CN202021984990.4U
Authority: CN
Inventors: 吴伟琦
Original assignee: Shaoxing Lianyuan Metal Technology Co ltd
Current assignee: Shaoxing Lianyuan Metal Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-05-11
Anticipated expiration: 2030-09-11

Abstract

The utility model discloses an expansion screw assembly, the screw body including one end fixedly connected with inflation head, screw body outside cover is equipped with the expansion pipe, the screw body one end outside closes soon through the screw thread and is connected with the nut, the first telescopic link that screw body one end both sides fixedly connected with slope set up, the free end rotation that connecting rod and first telescopic link were passed through to the one end of expansion pipe is connected. The utility model discloses in, compare in traditional expansion screw subassembly, when the rotation nut is in order to realize expansion screw and wall jogged joint, the in-process that the relative expansion pipe of the screw body removed promptly under the effect of connecting rod for cone on the first telescopic link free end inserts the downthehole table wall of fixed orifices, realizes expansion screw and fixed orifices's further fixed, improves connection structure's fastness and stability, reduces the potential safety hazard.

Description

Expansion screw assembly

Technical Field

The utility model relates to an expansion screw technical field especially relates to an expansion screw subassembly.

Background

Traditional expansion screw subassembly, be used for connecting the building wall body and be used for connecting the fastener of glass curtain a bit, this an expansion screw for building includes the screw body of one end fixedly connected with inflation head, inflation pipe and nut, it removes to drive the screw body through the nut rotation, the screw drives the inflation head when removing and struts the inflation pipe, thereby make the inflation pipe withstand the wall hole in order to realize fixed connection, however, the structural firmness of connection is not high, there is certain potential safety hazard, therefore, lacks the expansion screw subassembly that improves the connection firmness.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above problems, an expansion screw assembly is proposed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an expansion screw subassembly, includes the screw body of one end fixedly connected with inflation head, screw body outside cover is equipped with the expansion pipe, screw body one end outside closes soon through the screw thread and is connected with the nut, the first telescopic link that screw body one end both sides fixedly connected with slope set up, the free end rotation that connecting rod and first telescopic link were passed through to the one end of expansion pipe is connected, the both sides sliding connection of the screw body has the slide bar, is located the screw body outside the trapezoidal briquetting of tip fixedly connected with of slide bar is located two of the internal portion of screw the tip of slide bar is fixedly connected with semicircular rod and semicircular tube respectively, and the free end cover of semicircular rod establishes in the semicircular tube, screw body one end is inserted and is equipped with the gag lever post that passes semicircular rod and semicircular tube inner space.

As a further description of the above technical solution:

the outer sides of the semi-annular rod and the semi-annular tube are fixedly connected with the inner surface wall of the screw body through two symmetrically arranged second telescopic rods respectively.

As a further description of the above technical solution:

and a spring penetrating through the semi-annular pipe is elastically connected between the two ends of the semi-annular rod.

As a further description of the above technical solution:

the free end of the first telescopic rod is fixedly connected with a conical head.

As a further description of the above technical solution:

one end of the limiting rod is fixedly connected with the screw body through a positioning pin.

As a further description of the above technical solution:

and a rubber layer is bonded on the outer side of the other end of the limiting rod.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, compare in traditional expansion screw subassembly, when the rotation nut is in order to realize expansion screw and wall jogged joint, the in-process that the relative expansion pipe of the screw body removed promptly under the effect of connecting rod for cone on the first telescopic link free end inserts the downthehole table wall of fixed orifices, realizes expansion screw and fixed orifices's further fixed, improves connection structure's fastness and stability, reduces the potential safety hazard.

2. The utility model discloses in, promote semiannular pole and semiannular pipe through the gag lever post to the internal table wall horizontal migration of screw, and then promote slide bar and trapezoidal briquetting and push down the connecting rod, the restriction connecting rod rotates, further improves the stability of connection between the table wall in first telescopic link and the fixed orifices to further improve the whole firm in connection nature on the wall body of expansion screw.

Drawings

Fig. 1 shows a schematic front view of an expansion screw assembly according to an embodiment of the present invention;

FIG. 2 shows a schematic partial cross-sectional view of a screw body at A-A of an expansion screw assembly according to an embodiment of the present invention;

fig. 3 shows a connection diagram of the semi-annular rod and the semi-annular rod of the expansion screw assembly according to an embodiment of the present invention.

Illustration of the drawings:

1. a screw body; 2. an expansion tube; 3. a nut; 4. a connecting rod; 5. a first telescopic rod; 51. a conical head; 6. a trapezoidal briquetting; 7. a slide bar; 8. a limiting rod; 9. positioning pins; 10. a second telescopic rod; 11. a semi-annular rod; 12. a semi-annular tube; 13. a rubber layer; 14. a spring.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: an expansion screw component comprises a screw body 1 with one end fixedly connected with an expansion head, an expansion pipe 2 is sleeved outside the screw body 1, a nut 3 is connected outside one end of the screw body 1 in a screwing mode through threads, a first expansion link 5 which is obliquely arranged is fixedly connected to two sides of one end of the screw body 1, a conical head 51 is fixedly connected to the free end of the first expansion link 5 and is convenient to insert into a wall hole, so that the free end of the first expansion link 5 is connected with the wall hole from the outside, the connection firmness and stability of the expansion screw are improved, one end of the expansion pipe 2 is rotatably connected with the free end of the first expansion link 5 through a connecting rod 4, when the nut 3 is rotated, the screw body 1 is driven to move, the free end of the first expansion link 5 is enabled to slide outwards, the inner surface wall inserted into the wall hole is compared with the traditional expansion screw, under the fixing action of the expansion screw and the wall body, the fixing between the expansion, improve connection structure's fastness, the both sides sliding connection of the screw body 1 has slide bar 7, the tip fixedly connected with trapezoidal briquetting 6 of the slide bar 7 that is located the screw body 1 outside, the tip difference fixedly connected with semiannular pole 11 and semiannular pipe 12 of two slide bars 7 that are located the screw body 1 inside, and the free end cover of semiannular pole 11 is established in

semiannular pipe

12, 1 one end of the screw body is inserted and is equipped with the gag lever post 8 that passes semiannular pole 11 and the 12 internal clearance of semiannular pipe, extrude semiannular pole 11 and semiannular pipe 12 through gag lever post 8 and be close to screw body 1 inside table wall and remove, promote

slide bar

7 and 6 extrusion connecting rod 4 rotations of trapezoidal briquetting then, the interior table wall of the first telescopic link 5 of further being convenient for inserts the wall hole.

Specifically, as shown in fig. 2, the outer sides of the semi-annular rod 11 and the semi-annular tube 12 are fixedly connected with the inner surface wall of the screw body 1 through two symmetrically arranged second telescopic rods 10 respectively, and the semi-annular rod 11 and the semi-annular tube 12 are fixed without limiting relative sliding therebetween.

Specifically, as shown in fig. 3, a spring 14 passing through the semi-annular tube 12 is elastically connected between two ends of the semi-annular rod 11, and under the connecting action of the spring 14, the semi-annular rod 11 cannot be separated from the semi-annular tube 12, and meanwhile, the purpose that the semi-annular rod 11 enters and exits the semi-annular tube 12 is met.

Specifically, as shown in fig. 1, one end of the limiting rod 8 is fixedly connected with the screw body 1 through a positioning pin 9, so as to position the limiting rod 8 and ensure that the trapezoidal pressing block 6 is stably pressed on the connecting rod 4.

Specifically, as shown in fig. 2, the rubber layer 13 is bonded to the outer side of the other end of the limiting rod 8, so that the limiting rod 8 is prevented from directly contacting with the outer surface walls of the semi-annular rod 11 and the semi-annular pipe 12, abrasion caused by sliding friction is reduced, and the service life of the whole expansion screw is prolonged.

The working principle is as follows: when the expansion screw is used, the nut 3 is rotated normally, the screw body 1 is driven to move horizontally in the expansion pipe 2, then the expansion pipe 2 is expanded through the expansion head, and the normal installation process of the expansion screw in a wall hole is completed, wherein in the moving process of the screw body 1 in the expansion pipe 2, the conical head 51 at the free end of the first telescopic rod 5 is driven to be inserted into the inner surface wall of the wall hole under the length limitation of the connecting rod 4, the purpose of fixing the expansion screw and the wall hole for the second time is achieved, the firmness of the connection of the expansion screw and the wall hole is improved, then the limiting rod 8 is inserted into the screw body 1, the semi-annular rod 11 and the semi-annular pipe 12 are enabled to be expanded, namely, the semi-annular rod 11 and the semi-annular pipe 12 are enabled to move towards the inner surface wall of the screw body 1, the sliding rod 7 is further pushed, the trapezoidal pressing block 6 is driven to be pressed on the connecting rod 4, finally, the, the connection stability between the first telescopic rod 5 and the inner surface wall of the wall hole is further improved, and therefore the connection firmness of the whole expansion screw on the wall body is further improved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an expansion screw subassembly, includes the screw body (1) of one end fixedly connected with inflation head, screw body (1) outside cover is equipped with expansion pipe (2), screw body (1) one end outside closes soon through the screw thread and is connected with nut (3), its characterized in that, the first telescopic link (5) that the slope set up are fixedly connected with in screw body (1) one end both sides, the one end of expansion pipe (2) is rotated through connecting rod (4) and the free end of first telescopic link (5) and is connected, the both sides sliding connection of screw body (1) has slide bar (7), is located the screw body (1) outside the tip fixedly connected with trapezoidal briquetting (6) of slide bar (7), is located the inside two of screw body (1) the tip of slide bar (7) is fixedly connected with semi-ring shape pole (11) and semi-ring shape pipe (12) respectively, and the free end cover of semi-ring shape pole (11) is established in semi-ring shape pipe (12), one end of the screw body (1) is inserted with a limiting rod (8) which penetrates through the inner gap of the semi-annular rod (11) and the semi-annular pipe (12).

2. An expansion screw assembly according to claim 1, wherein the semi-annular rod (11) and the semi-annular tube (12) are fixedly connected to the inner surface wall of the screw body (1) by two symmetrically arranged second telescopic rods (10), respectively.

3. An expansion screw assembly according to claim 1, characterized in that a spring (14) is resiliently connected between the ends of the semi-annular shaft (11) through the semi-annular tube (12).

4. Expansion screw assembly according to claim 1, wherein the free end of the first telescopic shaft (5) is fixedly connected with a conical head (51).

5. An expansion screw assembly according to claim 1, wherein one end of the limiting rod (8) is fixedly connected to the screw body (1) by means of a positioning pin (9).

6. Expansion screw assembly according to claim 1, characterized in that a rubber layer (13) is bonded to the outside of the other end of the stop rod (8).