CN216951166U

CN216951166U - Detachable expansion bolt

Info

Publication number: CN216951166U
Application number: CN202123146635.7U
Authority: CN
Inventors: 李克孝; 王磊
Original assignee: Xiamen Xinyixin Industry And Trade Co ltd
Current assignee: Xiamen Xinyixin Industry And Trade Co ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-07-12
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a detachable expansion bolt in the technical field of connecting pieces, which comprises a sleeve, a screw rod and a thread block, wherein the screw rod and the thread block are in detachable thread fit with the sleeve, one side of the thread block is rotatably connected with a turntable, the turntable is hinged with a clamping curved rod, the side wall of the sleeve is provided with a chute, the free end of the clamping curved rod extends into the chute, a limiting block which extends to be abutted against the middle part of the clamping curved rod is arranged inside one end of the sleeve, the thread block is connected with a rotating rod in a sliding way, and an elastic piece is connected between the rotating rod and the thread block; after the screw rod breaks away from the inside of sleeve, the upper end relative movement of bull stick under the drive of elastic component to sleeve opening position, realizes with the cooperation of rubber circle that the sleeve opening is closed, prevents inside entering sleeve such as outside grains of sand.

Description

Detachable expansion bolt

Technical Field

The utility model relates to the technical field of connecting pieces, in particular to a detachable expansion bolt.

Background

The expansion bolt is a commonly used connecting piece, and the expansion bolt in the prior art comprises a screw rod and an expansion cylinder, and when the expansion bolt is used, a hole is punched in a part to be connected, the expansion cylinder is placed in the hole, the screw rod is screwed into the expansion cylinder to expand the expansion cylinder, so that the expansion cylinder is tensioned in the hole, and the connection work is realized.

The expansion bolts are usually installed on walls or ground and road surfaces, and are difficult to remove and seriously affect the appearance if being arranged; after the bolt is separated from the sleeve temporarily, sand grains and the like are easily accumulated in the sleeve, and the cleaning is inconvenient.

Based on this, the utility model designs a detachable expansion bolt to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a detachable expansion bolt, which solves the problems that the existing expansion cylinder is difficult to take out from the wall and sand grains are easy to accumulate in the sleeve in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a detachable expansion bolt, includes the sleeve and can dismantle screw-thread fit's screw rod rather than, telescopic internal thread threaded connection has the screw thread piece, the screw thread piece deviates from sleeve opening one side swivelling joint and has the carousel, the carousel deviates from screw thread piece one side and articulates there is the joint curved bar, the spout has been seted up to the sleeve lateral wall, joint curved bar free end extends to in the spout, the inside stopper that extends to with joint curved bar middle part butt that is provided with of sleeve one end, there is the bull stick along sleeve axis direction sliding connection on the screw thread piece, be connected with the elastic component between bull stick and the screw thread piece, the elastic force drive of elastic component the bull stick trend is removed to the sleeve opening.

Preferably, the sliding grooves and the clamping bent rods are uniformly provided with a plurality of groups of annular arrays which take the sleeves as centers and correspond to one another.

Preferably, the middle part of the screw is provided with an external hexagonal part.

Preferably, the opening end of the sleeve is provided with a groove, and a rubber ring is arranged in the groove.

Preferably, the inner diameter of the rubber ring is smaller than the outer diameter of the rotating rod, and the inner ring of the rubber ring is outwards and uniformly provided with tearing lines.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the rotating rod drives the thread block to rotate to be close to or far away from the limiting part, and the clamping curved rod is matched with the limiting block to enable the free end of the clamping curved rod to penetrate through the corresponding sliding groove to extend out of the sleeve or retract into the sleeve, so that the sleeve can be conveniently taken out of the wall; after the screw rod breaks away from the inside of sleeve, the upper end relative movement of bull stick under the drive of elastic component to sleeve opening position, realizes with the cooperation of rubber circle that the sleeve opening is closed, prevents inside entering sleeve such as outside grains of sand.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic view of the fitting structure of the inner part of the sleeve according to the present invention;

FIG. 3 is an exploded view of the rotating rod, the elastic member and the threaded block of the present invention;

FIG. 4 is a schematic view of the rubber ring structure of the present invention;

FIG. 5 is a schematic view of the structure of the rubber ring and the upper end of the rotating rod.

1. A sleeve; 11. a chute; 12. a groove; 2. a screw; 21 an outer hex portion; 3. a limiting part; 4. a thread block; 5. a turntable; 6. clamping a curved bar; 7. a rotating rod; 71. an elastic member; 8. a rubber ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a detachable expansion bolt, include sleeve 1 and rather than can dismantle screw-thread fit's screw rod 2, the internal thread threaded connection of sleeve 1 has screw thread piece 4, screw thread piece 4 deviates from 1 opening one side swivelling joint of sleeve 5, carousel 5 deviates from 4 one sides of screw thread pieces and articulates there is joint curved bar 6, spout 11 has been seted up to 1 lateral wall of sleeve, 6 free ends of joint curved bar extend to in the

spout

11, 1 one end of sleeve is inside to be provided with the stopper 3 that extends to with 6 middle part butts of joint curved bar, there is bull stick 7 along 1 axis direction sliding connection of sleeve on the screw thread piece 4, be connected with elastic component 71 between bull stick 7 and the screw thread piece 4, elastic component 71's 7 trends of elastic force drive bull stick move to 1 opening of sleeve.

Furthermore, the sliding grooves 11 and the clamping bent rods 6 are uniformly provided with a plurality of groups of annular arrays which take the sleeve 1 as the center and correspond to one another.

Further, the middle of the screw 2 is provided with an outer hexagonal part 21.

Furthermore, the opening end of the sleeve 1 is provided with a groove 12, and a rubber ring 8 is arranged in the groove 12.

Further, the inner diameter of the rubber ring 8 is smaller than the outer diameter of the rotating rod 7, and the inner ring of the rubber ring 8 is outwards and uniformly provided with tearing lines.

One embodiment of the utility model:

when in use, a hole is formed in a wall or the ground, the sleeve 1 is embedded into the hole in the wall or the ground, the structure of the rotating rod 7 is similar to a T-shaped structure as shown in figure 3, a cross groove is formed in the upper surface of the transverse end of the rotating rod 7, an external tool such as a screwdriver is matched with the cross groove to drive the rotating rod 7 to rotate, the vertical end of the rotating rod 7 linearly slides relative to the thread block 4 along the axial direction of the sleeve 1, the rotating rod 7 cannot rotate relative to the thread block 4, so that the thread block 4 is driven to rotate relative to the sleeve 1 by the rotation of the rotating rod 7, the thread block 4 is close to or far away from the limiting block 3 along the axial direction of the sleeve 1, the bottom of the thread block 4 is rotatably connected with the coaxial turntables 5, the sliding grooves 11 and the clamping bent rods 6 are respectively in six groups of one-to-one correspondence, the upper ends of the clamping bent rods 6 are hinged at the bottom edge of the turntables 5, the six groups of clamping bent rods 6 use the axial line of the turntables 5 as a central annular array, the six groups of sliding grooves 11 use the axial line of the turntables 5 as a central annular array, the lower end of the clamping bent rod 6 extends into the sliding groove 11;

the limiting part 3 is integrally formed at the lower end of the inner cavity of the sleeve 1, the middle part of the inner side of the clamping curved rod 6 is abutted against the upper end of the limiting part 3, the limiting block 3 is fixed relative to the sleeve 1, and in the process that the thread block 4 is close to the limiting block 3, the lower end of the clamping curved rod 6 penetrates through the one-to-one corresponding sliding grooves 11 and extends out of the sleeve 1, so that the lower end of the clamping curved rod 6 is abutted against the inner side wall of a hole of a wall or ground, the sleeve 1 is fixed in the hole of the wall or ground, and the screw rod 2 is in threaded connection with the sleeve 1 to realize an expansion bolt structure;

when the hole of sleeve 1 follow wall is taken out to needs, keep away from spacing portion 3 for 1 rotatory screw thread piece of sleeve relatively, this in-process, joint curved bar 6 accomodates to sleeve 1 inside through 11 spacing cooperation joint curved bars 6 lower extremes of spout for 6 lower extremes of joint curved bar break away from with the downthehole lateral wall butt of wall, thereby make things convenient for sleeve 1 to break away from the wall hole.

A groove 12 is formed in the opening end of the sleeve 1, a rubber ring 8 is arranged on the inner side wall of the groove 12, the inner diameter of the rubber ring 8 is slightly smaller than the outer diameter of the transverse end of the rotating rod 7, tear lines are uniformly formed in the inner ring of the rubber ring 8, so that the inner ring of the rubber ring 8 forms a type brush structure to be beneficial to the penetration of the screw rod 2 and to certain sealing performance, the rubber ring 8 has certain deformation elastic capacity, the screw rod 2 penetrates through the inner diameter of the rubber ring 8 to enter the sleeve 1, the rubber ring 8 is slightly deformed to adapt, the groove 12 is used for accommodating the deformed rubber ring 8, and after the screw rod 2 is separated from the sleeve 1, the rubber ring 8 is reset to restore to the original state;

in some use occasions, after the screw 2 needs to be separated from the temporary sleeve 1, external small sand particles easily enter the inner cavity of the sleeve 1, and the small sand particles easily cause that the matching of the thread block 4 and the internal thread of the sleeve 1 is not smooth and the matching of the screw 2 and the internal thread of the sleeve 1 is not smooth;

elastic component 71 can adopt its both ends of compression spring respectively with 4 inner chambers of screw thread piece, 7 lower extreme fixed connection of bull stick, in the inside in-process of screw rod 2

rotatory advance sleeve

1, 2 lower extremes of screw rod and 7 upper surface butts of bull stick promote 7 relatively and remove, and compression elastic component 71 produces reverse elastic force, the horizontal end external diameter that bull stick 7 is located the screw thread piece 4 outside is less than sleeve 1 internal diameter, it is gapped between 7 horizontal ends of bull stick and the sleeve 1 inside wall, after screw rod 2 breaks away from sleeve 1, bull stick 7 resets under the reverse elastic force drive of elastic component 71, make 7 horizontal end tops of bull stick and 8 diapire butts of rubber circle, 7 horizontal end tops of bull stick and 8 diapire butts cooperation realization of rubber circle are relative closed sleeve 1 open end, thereby block that little sand grain gets into inside sleeve 1.

The middle part of the screw rod 2 is fixedly connected with a coaxial outer hexagonal part 21, the outer hexagonal part 21 is matched with an external tool wrench to drive the screw rod 2 to rotate, when the screw rod 2 is used, one side of the screw rod 2, which is positioned at the outer hexagonal part 21, can be completely arranged in the sleeve 1, and the other side of the screw rod 2, which is positioned at the outer hexagonal part 21, is used for being matched with an external part.

The utility model discloses well electrical equipment passes through external control switch and is connected with external power source.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a detachable expansion bolts, includes sleeve (1) and rather than can dismantle screw-thread fit's screw rod (2), its characterized in that: the internal thread threaded connection of sleeve (1) has screw thread piece (4), screw thread piece (4) deviate from sleeve (1) opening one side swivelling joint and have carousel (5), carousel (5) deviate from that screw thread piece (4) one side articulates there is joint curved bar (6), spout (11) have been seted up to sleeve (1) lateral wall, joint curved bar (6) free end extends to in spout (11), inside stopper (3) that extend to with joint curved bar (6) middle part butt that is provided with of sleeve (1) one end, there is bull stick (7) along sleeve (1) axis direction sliding connection on screw thread piece (4), be connected with elastic component (71) between bull stick (7) and screw thread piece (4), the elastic force drive of elastic component (71) bull stick (7) tend to remove to sleeve (1) opening.

2. A removable expansion bolt according to claim 1, wherein: the sliding grooves (11) and the clamping bent rods (6) are uniformly provided with a plurality of groups which are in one-to-one correspondence with the sleeves (1) as central annular arrays.

3. A removable expansion bolt according to claim 1, wherein: an outer hexagonal part (21) is arranged in the middle of the screw rod (2).

4. A removable expansion bolt according to claim 1, wherein: a groove (12) is formed in the opening end of the sleeve (1), and a rubber ring (8) is arranged in the groove (12).

5. A removable expansion bolt according to claim 4, wherein: the inner diameter of the rubber ring (8) is smaller than the outer diameter of the rotating rod (7), and the inner ring of the rubber ring (8) is outwards and uniformly provided with tearing lines.