CN210978118U

CN210978118U - Dislocation expansion nail

Info

Publication number: CN210978118U
Application number: CN201922256528.6U
Authority: CN
Inventors: 闫自超; 闫法卓
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-07-10
Anticipated expiration: 2029-12-16

Abstract

The utility model relates to a dislocation inflation nail, including screw rod and nut, the nut passes through the screw thread and installs the back tip at the screw rod, has seted up the cotter way along the axial on the periphery wall of screw rod, and the front end bottom surface of cotter way is the wedge, and the inslot sliding assembly has the inflation key, and slidable mounting has the gasket between nut and inflation key on the screw rod, is fixed with on the internal perisporium of gasket with cotter way sliding fit and pastes the slurcam in inflation key rear end. The utility model discloses make the wedge face dislocation of expansion key and cotter way expand, the expansion key outwards opens and then struts in the mounting hole gradually, expansion key intensity is high, firm in connection, be difficult for droing, and the expansion pipe structure has been saved, moreover, the steam generator is simple in structure, save the cost, when needs are dismantled the expansion nail, only need lift the nut off, inwards strike the screw rod with the hammer, make the screw rod inwards remove, the expansion key just can get into the cotter way and then reset, then outwards extract the screw rod, can easily take out, the problem of leading to inconvenient dismantlement by expansion pipe expansion deformation in the past has been solved.

Description

Dislocation expansion nail

Technical Field

The utility model relates to a fastener technical field, concretely relates to dislocation inflation nail.

Background

In the fastener field, the use of inflation nail is very extensive, current commonly used inflation nail generally comprises inflation screw rod and expansion pipe, under the effect of external force, two parts relative activity, make the local emergence of fixed expansion pipe warp, thereby the volume grow produces the locking force, current inflation nail generally makes the sleeve pipe warp and then fasten the sleeve pipe downthehole through both ends inside extrusion and expanded mode, this kind of inflation nail meets the little wall body of soft density such as foam brick, the gypsum siding wall, hollow brick etc. almost loses the effect, the current post-use inflation nail dismantlement is difficult, the dismantlement process makes the screw warp easily, can not used repeatedly, relatively waste resources, and the inflation nail is detained on the wall body, influence the decoration effect, it is unsightly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a dislocation inflation nail is provided, its mode that adopts the inflation key firmly combines with the wall hole, simple structure, convenience safe in utilization, convenient loading and unloading.

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

the utility model provides a dislocation inflation nail, includes screw rod and nut, the nut passes through the screw thread and installs the back tip at the screw rod, seted up the cotter way along the axial on the periphery wall of screw rod, the front end bottom surface in cotter way is the wedge face, it has the inflation key to slide in the cotter way to be equipped with, and slidable mounting has the gasket between nut and inflation key on the screw rod, be fixed with on the internal perisporium of gasket with cotter way sliding fit and paste the slurcam at inflation key rear end.

And a spring washer is assembled on the screw rod between the nut and the gasket in a sliding manner, and the end part of the spring washer is provided with a pushing column which is in sliding fit with the pin groove and is attached to the rear end of the pushing plate.

The middle part periphery wall of screw rod is last to install the mounting, the mounting cover in the screw rod and the inflation key outside and with inflation key sliding contact.

The fixing piece is a plastic sleeve.

The anti-skidding lines are uniformly distributed on the peripheral wall of the front end of the expansion key, and a slope matched with the wedge-shaped surface of the pin slot is arranged on the bottom surface of the front end of the expansion key.

And an anti-skid reticulate pattern is arranged on the peripheral wall of the front end part of the screw rod.

The utility model is provided with a pin groove along the axial direction on the peripheral wall of the screw rod, the expansion key is assembled in the pin groove in a sliding way, the gasket can be pushed to move by rotating the nut, the gasket drives the expansion key to move forwards along the pin slot by the pushing plate, the wedge-shaped surface of the expansion key and the pin groove is expanded in a staggered way, the expansion key is gradually expanded outwards and then is expanded in the mounting hole, the expansion key has high strength and firm connection, is not easy to fall off, can bear larger heavy objects, ensures the use safety of the articles, and the expansion pipe structure is omitted, the structure is simple, the cost is saved, when the expansion nail needs to be disassembled, only the nut needs to be disassembled, the screw rod needs to be knocked inwards by a hammer, so that the screw rod moves inwards, the expansion key enters the pin groove to reset, then the screw rod is pulled outwards, can be easily taken out, can be repeatedly utilized, saves resources and solves the problem of inconvenient disassembly caused by expansion deformation of the expansion pipe in the past.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a screw rod according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of an expansion key according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a gasket according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of the elastic washer of the present invention.

Fig. 6 is a schematic view of an expanding structure of an expansion key according to an embodiment of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-6, a dislocation expansion nail comprises a screw rod 1 and a nut 2, the nut 2 is installed at the rear end of the screw rod 1 through threads, a pin groove 3 is axially formed on the outer peripheral wall of the screw rod 1, the pin groove 3 penetrates through the rear end of the screw rod 1, the bottom surface of the front end of the pin groove 3 is a wedge surface 4, the wedge surface of the pin groove inclines from the front end to the rear end of the screw rod, an expansion key 5 is slidably assembled in the pin groove, the expansion key 5 is installed in the pin groove and matched with the screw rod to form a cylindrical structure, a gasket 6 is slidably installed on the screw rod 1 between the nut and the expansion key, a pushing plate 7 which is slidably matched with the pin groove and attached to the rear end of the expansion key is fixed on the inner, the gasket 6 can be driven to slide along the screw rod by rotating the nut, the gasket 6 drives the expansion key 5 to move in the pin slot through the pushing plate 7, the wedge-shaped surfaces of the expansion keys and the pin grooves are staggered and unfolded, and the expansion keys 5 are gradually expanded outwards and further are unfolded in the mounting holes.

The screw rod 1 is provided with a spring washer 8 between the nut and the gasket in a sliding mode, the end portion of the spring washer is provided with a pushing column 9 which is in sliding fit with the pin groove and attached to the rear end of the pushing plate, the spring washer 8 is matched with the gasket 6 for use, the strength is higher, and larger acting force can be borne.

Install mounting 10 on the middle part periphery wall of screw rod, mounting 10 cover be used for restricting the inflation key at screw rod and inflation key periphery and with inflation key sliding contact, the mounting prevents to drop from the round pin inslot carrying in-process inflation key, portable, inflation key and mounting sliding contact do not influence the inflation key and remove in the round pin inslot simultaneously. The fixing piece is a plastic sleeve, the manufacturing cost of the fixing piece is low, and an elastic rubber band and the like can be selected.

The anti-skidding lines 11 are evenly distributed on the peripheral wall of the front end of the expansion key 5, the expansion key can be connected with a wall body more firmly after being unfolded, and a slope matched with the wedge-shaped surface of the pin slot is arranged on the bottom surface of the front end of the expansion key, so that the expansion key can be unfolded.

The anti-skidding reticulate pattern 12 is arranged on the outer peripheral wall of the front end of the screw rod, so that the front end of the screw rod is firmly connected with the mounting hole.

The utility model discloses during specific use, at first bore the mounting hole unanimous with screw rod external diameter size on the mounted position on wall body or ground, at first can pull down the mounting, then install screw rod 1 in the mounting hole, make spring washer and gasket remove to the screw rod front end together through swivel nut, and then drive the expansion key and remove to the screw rod front end along the cotter way, make the expansion key expand with the wedge dislocation of cotter way, the expansion key outwards opens and then struts in the mounting hole gradually, make the expansion key tight mounting hole that expands, and then reach the purpose of installation fastening, when needs dismantle the expansion nail, only need lift the nut off, with the inside screw rod of hammer, make the screw rod inwards remove, the expansion key just can get into the cotter way and then reset, then outwards extract the screw rod, can easily take out.

Claims

1. The utility model provides a dislocation inflation nail, includes screw rod and nut, its characterized in that: the nut passes through the screw thread and installs the rear end at the screw rod, the round pin groove has been seted up along the axial on the periphery wall of screw rod, and the front end bottom surface in round pin groove is the wedge face, it has the inflation key to slide assembly in the round pin inslot, and slidable mounting has the gasket between nut and inflation key on the screw rod, be fixed with on the internal perisporium of gasket with round pin groove sliding fit and paste the slurcam at inflation key rear end.

2. The offset expansion tack of claim 1, wherein: and a spring washer is assembled on the screw rod between the nut and the gasket in a sliding manner, and the end part of the spring washer is provided with a pushing column which is in sliding fit with the pin groove and is attached to the rear end of the pushing plate.

3. The offset expansion tack of claim 1 or 2, wherein: the middle part periphery wall of screw rod is last to install the mounting, the mounting cover in the screw rod and the inflation key outside and with inflation key sliding contact.

4. The offset expansion tack of claim 3, wherein: the fixing piece is a plastic sleeve.

5. The offset expansion tack of claim 1, wherein: the anti-skidding lines are uniformly distributed on the peripheral wall of the front end of the expansion key, and a slope matched with the wedge-shaped surface of the pin slot is arranged on the bottom surface of the front end of the expansion key.

6. The offset expansion tack of claim 1, wherein: and an anti-skid reticulate pattern is arranged on the peripheral wall of the front end part of the screw rod.