CN212155377U

CN212155377U - Novel expansion bolt

Info

Publication number: CN212155377U
Application number: CN202020736004.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Suzhou Feishi Architectural Decoration Co ltd
Current assignee: Suzhou Feishi Architectural Decoration Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-12-15
Anticipated expiration: 2030-05-07

Abstract

The utility model provides a novel expansion bolt, include the bolt, set up in nut on the bolt, set up in the spring washer of nut below, set up in the flat washer of spring washer below, be located the section of thick bamboo structure that expands of flat washer below, expand a section of thick bamboo structure including expand a section of thick bamboo, set up in the protruding portion on the outer periphery of an expansion section of thick bamboo lower extreme, the bolt passes expand a inside of a section of thick bamboo, the lower extreme of an expansion section of thick bamboo is equipped with a plurality of incision grooves, the protruding portion with an expansion fixed connection. The protruding part is arranged on the outer circumferential surface of the lower end of the expansion cylinder, so that when the lower end of the expansion cylinder expands, the protruding part can be abutted against the inner wall of the mounting hole, the fixing effect can be improved, the expansion cylinder is prevented from being pulled out, and the expansion cylinder is fixed and stable; and the positioning structure is arranged, so that the elastic frame can elastically deform to reduce the caliber of the elastic frame and can be contained in the mounting hole, and the rubber block can be abutted against the inner wall of the mounting hole to be fixed stably.

Description

Novel expansion bolt

Technical Field

The utility model belongs to the technical field of the building part technique and specifically relates to a novel expansion bolts is related to.

Background

The existing expansion bolt consists of a bolt, a nut, a spring washer, a flat washer and an expansion cylinder. However, the caliber of the mounting hole is often larger than that of the expansion cylinder, so that the expansion bolt is often inclined when being mounted in the mounting hole, however, the inclination of the expansion bolt generates stress concentration, and the problem of bolt looseness sometimes occurs after the nut is screwed down, and the connection is not firm.

Therefore, there is a need to provide a new technical solution to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can effectively solve above-mentioned technical problem.

In order to achieve the purpose of the utility model, the following technical proposal is adopted:

the utility model provides a novel expansion bolt, include the bolt, set up in nut on the bolt, set up in the spring washer of nut below, set up in the flat washer of spring washer below, be located the section of thick bamboo structure that expands of flat washer below, expand a section of thick bamboo structure including expand a section of thick bamboo, set up in the protruding portion on the outer periphery of an expansion section of thick bamboo lower extreme, the bolt passes expand a inside of a section of thick bamboo, the lower extreme of an expansion section of thick bamboo is equipped with a plurality of incision grooves, the protruding portion with an expansion fixed connection.

Preferably, the novel expansion bolt further comprises a positioning structure arranged on the expansion cylinder structure.

Preferably, the positioning structure comprises an elastic frame, the bolt penetrates through the inner part of the elastic frame, and the upper surface of the elastic frame abuts against the lower surface of the flat washer.

Preferably, the location structure still including set up in a plurality of elastic rods of elastic frame below, the upper end of elastic rod with the lower fixed surface of elastic frame is connected, the lower extreme top of elastic rod is leaned on the outer periphery of expanding a section of thick bamboo and rather than sliding contact.

Preferably, the elastic frame is in a hollow round table shape, and a notch is formed in the circumferential direction of the elastic frame.

Preferably, the positioning structure further comprises a rubber block arranged on the outer circumferential surface of the elastic frame, and the rubber block is fixedly connected with the elastic frame.

Preferably, the bolt includes a body and a tapered portion disposed at a lower end of the body, the body and the tapered portion are integrally formed, and a lower end of the expansion cylinder abuts against an outer circumferential surface of the tapered portion and is in sliding contact therewith.

Preferably, the body passes through the interior of the nut and is threadedly connected thereto.

Preferably, the body passes through the inside of the flat washer.

Preferably, the spring washer is located between the nut and the flat washer, the nut and the flat washer sandwiching the spring washer.

Compared with the prior art, the utility model discloses following beneficial effect has: the expansion bolt of the utility model is provided with the protruding part on the outer circumference of the lower end of the expansion cylinder, so that the protruding part can be propped against the inner wall of the mounting hole when the lower end of the expansion cylinder expands, thereby improving the fixing effect, preventing the expansion cylinder from being pulled out and fixing the expansion cylinder stably; the positioning structure is arranged, so that the elastic frame can elastically deform to reduce the caliber of the elastic frame and can be accommodated in the mounting hole, the rubber block can be propped against the inner wall of the mounting hole, the fixing is stable, and meanwhile, the positioning function can be realized on the utility model, the inclination of the rubber block is prevented, and the mounting quality and effect are ensured; the elastic rod can elastically deform and further can support the elastic frame, so that the rubber block is only propped against the inner wall of the mounting hole and is prevented from being pulled out by friction; and the setting of breach can make the smooth elastic deformation of elasticity frame to make its bore reduce, and then finally accept in the mounting hole so that right the utility model discloses play the effect of location, prevent its slope.

Drawings

Fig. 1 is a front view of the expansion bolt of the present invention;

fig. 2 is a cross-sectional view of the expansion bolt of the present invention shown in fig. 1;

fig. 3 is a cross-sectional view of the expansion bolt of the present invention shown in fig. 2, taken along the direction a-a';

fig. 4 is a cross-sectional view of the expansion bolt of the present invention shown in fig. 2, taken along the direction B-B'.

Detailed Description

The expansion bolt of the present invention will be described in detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 1 to 4, the expansion bolt of the present invention includes a bolt 1, a nut 2 disposed on the bolt 1, a spring washer 3 disposed below the nut 2, a flat washer 4 disposed below the spring washer 3, an expansion cylinder structure 5 disposed below the flat washer 4, and a positioning structure 6 disposed on the expansion cylinder structure 5.

As shown in fig. 1 to 4, the bolt 1 includes a body 11 and a tapered portion 12 disposed at a lower end of the body 11, the body 11 and the tapered portion 12 are integrally formed, an external thread is disposed on an outer circumferential surface of the bolt 11, and the tapered portion 12 is in a circular truncated cone shape.

As shown in fig. 1 and 2, the nut 2 is a commercially available nut, and the body 11 of the bolt 1 passes through the inside of the nut 2 and is threadedly coupled thereto, so that the nut 2 can move in the axial direction of the body 11 when rotated on the body 11. The flat gasket 4 is a common flat gasket on the market, the flat gasket 4 is circular, and the body 11 penetrates through the interior of the flat gasket 4 and can move along the axial direction of the body 11. The spring washer 3 is a common spring washer 3 on the market, the spring washer 3 is positioned between the flat washer 4 and the nut 2, and the nut 2 and the flat washer 4 clamp the spring washer 3.

As shown in fig. 1 to 4, the tube expansion structure 5 includes an expansion tube 51, and a protrusion 52 disposed on an outer circumferential surface of a lower end of the expansion tube 51. The expansion cylinder 51 is a hollow cylinder, the upper surface and the lower surface of the expansion cylinder are communicated, the upper end of the expansion cylinder 51 is abutted against the lower surface of the flat gasket 4, the lower end of the expansion cylinder 51 is provided with a plurality of cut grooves 511, the cut grooves 511 are long-strip-shaped, and the lower end of the expansion cylinder 51 is abutted against the circumferential surface of the conical part 12. Protruding portion 52 is equipped with a plurality of, the longitudinal section of protruding portion 52 is right triangle, protruding portion 52 with the outer periphery fixed connection of bloated section of thick bamboo 51, when nut 2 is screwed again, the lower extreme of bloated section of thick bamboo 51 is by toper portion 12 jack-up for protruding portion 52 top is leaned on the inner circumference face of mounting hole, thereby makes right the utility model discloses a fixed effect is better, and is more stable to difficult being extracted, and fixed effect is better.

As shown in fig. 1 to 4, the positioning structure 6 includes an elastic frame 61, a plurality of rubber blocks 62 disposed on an outer circumferential surface of the elastic frame 61, and an elastic rod 63 located below the elastic frame 61. Elasticity frame 61 is hollow round platform form, be equipped with breach 611 in the week of elasticity frame 61, make elasticity frame 61 is extruded to the mounting hole in the time, elasticity frame 61 can be compressed for the both ends of elasticity frame 61 circumference are close to each other and the gradual diminishing of bore, so that right the utility model discloses fix a position, prevent the utility model discloses crooked in the mounting hole. The rubber block 62 is equipped with a plurality of and distributes on the outer periphery of elasticity frame 61, the rubber block 62 with the fixed surface of elasticity frame 61 is connected to when the top was leaned on the periphery in the mounting hole, because the elastic coefficient of its self is great to lead to its and the mounting hole's inner wall frictional force great, and then can prevent the utility model discloses extracted. Elastic rod 63 is equipped with a plurality of, elastic rod 63 along expand a section of thick bamboo 51's circumference setting, elastic rod 63 is the slope form, elastic rod 63's upper end with the lower surface fixed connection of elasticity frame 61, elastic rod 63's lower extreme top is leaned on expand on a section of thick bamboo 51's the outer periphery and rather than sliding contact to play the supporting role to elasticity frame 61, elastic rod 63 adopts elastic material to make, makes it can bending deformation.

As shown in fig. 1 to 4, the utility model discloses when expansion bolts uses, at first place it in the mounting hole, then elasticity frame 61 accepts in the mounting hole, and rubber block 62 pushes up and leans on the inner wall of mounting hole, because elasticity frame 61 is the round platform form, elasticity frame 61 is close to each other by the both ends of extrusion and elasticity frame 61 circumference for the bore of elasticity frame 61 diminishes, so that the whole accepting in the mounting hole of elasticity frame 61, and can be right the utility model discloses expansion bolts plays the effect of location, prevents its slope, elasticity pole 63 bending deformation, thus right elasticity frame 61 plays the supporting role to because the coefficient of friction of rubber block 62 is big, make the frictional force between rubber block 62 and the mounting hole inner wall great, thereby make the utility model discloses be difficult for extracting. And the nut 2 of screwing for bolt 1 moves upwards, and then makes body 11 and toper portion 12 move upwards, makes the lower extreme of a section of thick bamboo 51 be backed down, because notch groove 511's setting, makes the lower extreme of a section of thick bamboo 51 that expands can be smooth by the back down and protruding portion 52 radially outwards remove and slope thereupon, leans on the inner wall at the mounting hole until protruding portion 52 top, thereby can be right the utility model discloses expansion bolt plays effectual fixed action, prevents that it from extracting, and fixed effect is firm and showing, and can effectually prevent the utility model discloses the quality of installation and fixed effect have been guaranteed in the slope. Therefore, the utility model discloses expansion bolts use description finishes.

Claims

1. The utility model provides a novel expansion bolts, including the bolt, set up in nut on the bolt, set up in the spring washer of nut below, set up in the flat packing ring of spring washer below, be located the section of thick bamboo structure that expands of flat packing ring below, its characterized in that: the expansion cylinder structure comprises an expansion cylinder and a protruding part arranged on the outer circumferential surface of the lower end of the expansion cylinder, the bolt penetrates through the expansion cylinder, a plurality of notch grooves are formed in the lower end of the expansion cylinder, and the protruding part is fixedly connected with the expansion cylinder.

2. The new expansion bolt as claimed in claim 1, wherein: the novel expansion bolt further comprises a positioning structure arranged on the expansion cylinder structure.

3. The new expansion bolt as claimed in claim 2, wherein: the positioning structure comprises an elastic frame, the bolt penetrates through the inner part of the elastic frame, and the upper surface of the elastic frame abuts against the lower surface of the flat washer.

4. The new expansion bolt as claimed in claim 3, wherein: the positioning structure further comprises a plurality of elastic rods arranged below the elastic frame, the upper ends of the elastic rods are fixedly connected with the lower surface of the elastic frame, and the lower ends of the elastic rods are abutted to the outer circumferential surface of the expansion cylinder and are in sliding contact with the outer circumferential surface.

5. The new expansion bolt as claimed in claim 4, wherein: the elastic frame is in a hollow round table shape, and notches are formed in the circumferential direction of the elastic frame.

6. The new expansion bolt as claimed in claim 5, wherein: the positioning structure further comprises a rubber block arranged on the outer circumferential surface of the elastic frame, and the rubber block is fixedly connected with the elastic frame.

7. The new expansion bolt as claimed in claim 6, wherein: the bolt comprises a body and a conical part arranged at the lower end of the body, the body and the conical part are integrally formed, and the lower end of the expansion cylinder abuts against the outer circumferential surface of the conical part and is in sliding contact with the lower end of the expansion cylinder.

8. The new expansion bolt as claimed in claim 7, wherein: the body passes through the interior of the nut and is in threaded connection therewith.

9. The new expansion bolt of claim 8, wherein: the body passes through the interior of the flat washer.

10. The new expansion bolt as claimed in claim 9, wherein said spring washer is between said nut and said flat washer, said nut and flat washer sandwiching said spring washer.