JP2005003010A - Fixing screw for quick connection of exterior joint device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing screw for quick connection of an exterior joint device. <P>SOLUTION: This fixing screw is to be driven into a construction hole in a concrete wall or a wall panel of other construction material. Male threads are provided in an outer surface of the fixing screw, an axial direction through hole is provided inside a body, and an action zone to be provided for effect of a tightening tool is provided at a rear end of the axial direction through hole. A middle step adjoining the action zone is set as a position limiting hole part provided with a taper angle, its inner diameter is gradually increased forward, and a front hole part of a relatively large hole diameter is provided at a front end of the position limiting hole part. A spring is contained in the front hole part, and it is closed with a plug to prevent the spring from resiliently getting out. In this structure, after the fixing screw is driven into the construction hole, an exterior joint bolt can be quickly driven to connect the exterior joint device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing screw that can quickly connect a kind of external device, and in particular, a fixing screw that is screwed into a construction hole in a concrete wall or other building material wall board, and after the fixing screw is screwed into the construction hole, the external bolt The present invention relates to a fixing screw that is used to quickly connect a screwed external device.
[0002]
[Prior art]
As shown in FIG. 1, a known fixing screw 1 is provided with a male screw 11 on its outer surface, an axial through hole 12 inside a main body 10, and a rear end of the axial through hole 12. There is an action section 121 to be used for applying the tightening tool, the middle stage of the action section 121 is a female screw part 122 having a female screw, and the front end of the female screw part 122 has a relatively large hole diameter. With this structure, when the fixing screw 1 is screwed into the construction hole 21 (FIG. 3), the expansion phenomenon does not occur and therefore the wall does not rupture, and therefore the external bolt 3 is externally connected. After passing through the device 4, the connection between the external device 4 and the wall plate 2 is completed by being screwed into the female screw portion 122 of the fixing screw 1. The fixing screw 1 is inconvenient in construction. That is, the screwing of the screw portion 31 of the external bolt 3 and the female screw portion 122 of the fixing screw 1 is achieved by an operation of tightening the tightening tool one turn at a time. In addition, it takes time and effort.
[0003]
[Problems to be solved by the invention]
It is an object of the present invention to provide a fixing screw capable of quickly connecting a circumscribing device that solves the drawbacks of the prior art, which is accommodated by a limiting hole portion of an axial through hole in the body of the fixing screw. It shall be a fixing screw that forms a unidirectional limit with respect to the spring so that the circumscribing bolt can be inserted quickly, thereby enabling fast connection of the circumscribing device.
[0004]
[Means for Solving the Problems]
According to the first aspect of the present invention, a male screw is provided on the outer surface of the fixing screw, an axial through hole is provided inside the main body of the fixing screw, and a tightening tool is applied to the rear end of the axial through hole. In the fixing screw that can be connected quickly to the external device, provided with a working zone,
The middle stage adjacent to the action zone is a limiting hole portion having a taper angle, the inner diameter gradually increases forward, and a front hole portion having a relatively large hole diameter is provided at the front end of the limiting hole portion. The spring is housed in the front hole, and it is blocked with a plug to prevent the spring from being ejected. With this structure, after the fixing screw is screwed into the construction hole, the external bolt is quickly inserted through the male screw. The external device can be connected by screwing, and the external device is a fixed screw that can be connected quickly.
According to a second aspect of the present invention, there is provided a fixing screw capable of quickly connecting the circumscribed device according to the first aspect, wherein the rear stage of the spring is a multi-circular wire body having a dense pitch, and the front stage is a multi-circular line having a coarse pitch. It is a fixing screw that can be quickly connected to the external device, characterized in that it is a body.
According to a third aspect of the present invention, there is provided a fixing screw capable of quickly connecting the circumscribed device according to the second aspect, wherein the minimum inner diameter of the spring is slightly larger than the outer diameter of the external thread of the circumscribed bolt. Fixed screw that can be connected quickly.
According to a fourth aspect of the present invention, in the fixing screw capable of quickly connecting the circumscribed device according to the third aspect, the pitch of the linear body around each spring is provided so as to mesh with the pitch of the male threaded portion of the circumscribed bolt. This is a fixing screw capable of quickly connecting the external device.
According to a fifth aspect of the present invention, there is provided a fixing screw capable of quickly connecting the circumscribed device according to the first aspect, wherein the perforated device is provided with a perforation in the plug.
According to a sixth aspect of the present invention, there is provided a fixing screw capable of rapidly connecting the circumscribed device according to the fifth aspect, wherein a flange is provided at one end of the plug.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, a male screw is provided on the outer surface of the fixing screw, an axial through-hole is provided inside the main body, and a working zone used for applying a tightening tool to the rear end of the axial through-hole is provided. A middle hole adjacent to the action zone is a limiting hole having a taper angle, its inner diameter gradually increases toward the front, and a front hole having a relatively large hole diameter at the front end of the limiting hole The spring is accommodated in the front hole portion, closed with a plug, and the spring is prevented from being ejected. With this structure, after the fixing screw is screwed into the construction hole, the external bolt is quickly screwed into the external device. Is used to connect
[0006]
【Example】
In order to achieve the above-described object, the embodiment of the present invention is as shown in FIGS. 3 to 6, wherein a male screw 51 is provided on the outer surface of the fixing screw 5, and an axial direction is provided inside the main body 50. There is a through hole 52, and an action zone 521 is provided at the rear end of the axial through hole 52 to be used for applying a tightening tool (a tool such as a hexagonal wrench or a snapper), and a middle stage adjacent to the action zone 521. Is a limiting hole portion 522 having a taper angle, the inner diameter thereof gradually increases forward, and a front hole portion 523 having a relatively large hole diameter is provided at the front end of the limiting hole portion 522, and the front hole A spring 53 is housed in the portion 523, a rear portion 531 of the spring 53 is a linear body having a dense pitch (about 2 to 3 rounds), and a front portion 532 is a plurality of rounds having a sparse pitch ( The diameter of the smallest inner hole 530 of the spring 53 is a circumscribed bore. Slightly larger than the outer diameter of the threaded portion of the male threaded portion 61 of the thread 6, and the inner diameter of the front portion 532 of the spring 53 is gradually increased so that the pitch of the spring 53 meshes with the pitch of the male threaded portion 61 of the external bolt 6. Is done. Thus, when the circumscribed bolt 6 rotates, the spring 53 guides its forward and backward movement like a general female screw. In addition, in order to prevent the spring 53 from escaping from the axial through hole 52, a hole 54 and a plug 54 having a flange 542 at one end are tightly inserted into the front hole 523 of the axial through hole 52. This prevents the spring 53 from escaping (the plug 54 is made of plastic and closes the front hole 523 tightly).
[0007]
At the time of construction, the fixing screw 5 of the present invention is screwed into the wall body 7 with a tightening tool, the external bolt 6 is passed through the perforation 81 of the external device 8, and the front end of the male screw portion 61 is strongly connected to the inside of the spring 53. Push into hole 530. The spring 53 itself undergoes an appropriate deformation when receiving an external force, the hole diameter changes greatly, and the inner hole 530 of the rear portion 531 gradually increases, which is advantageous for rapid insertion of the male screw portion 61 of the external bolt 6 ( (See FIG. 5). Therefore, after the male screw portion 61 of the circumscribed bolt 6 is inserted and positioned, it does not loosen and escape, and the reason is that the front portion 532 of the spring 53 receives the tightness of the limit hole 522 and forms a unidirectional limit. This is because of this (FIG. 6). If it is desired to retreat, it can be loosened by turning it like a general screw. Therefore, the present invention provides a quick insertion and positioning function of the circumscribed bolt 6 and has an effect of screw fitting when it is withdrawn.
[0008]
A washer 63 is provided at the rear end of the circumscribing bolt 6 and an action area 62 is provided for applying a tightening force. The action area is a polygon nut or an inner polygon hole. It is adapted to various tightening tools (for example, a spanner or a hexagonal spanner).
[0009]
【The invention's effect】
In summary, according to the present invention, the external device can be quickly connected to the wall with the fixing bolt, and the construction quality and cost can be effectively increased.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a known fixing screw.
FIG. 2 is a diagram showing an example of a known fixing screw.
FIG. 3 is an exploded perspective view of the present invention.
FIG. 4 is a cross-sectional view of the fixing screw of the present invention.
FIG. 5 is an operation display diagram of the present invention.
FIG. 6 is an operation display diagram of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fixing screw 10 Main body 11 Male screw 12 Axial through-hole 121 Action area 122 Female screw part 123 Front hole part 2 Wall body 21 Construction hole 3 External bolt 4 External device 5 Fixing screw 50 Main body 51 Male screw 52 Axial penetration Hole 521 Action area 522 Limit hole 523 Front hole 53 Spring 541 Drilling 542 Flange 6 External bolt 61 Male thread 62 Action area 7 Wall body 71 Construction hole 8 External device 81 Drilling

Claims (6)

A male screw is provided on the outer surface of the fixing screw, an axial through hole is provided in the main body of the fixing screw, and an action section for providing a tightening tool is provided at the rear end of the axial through hole. In addition, in the fixing screw that can quickly connect the external device,
The middle stage adjacent to the action zone is a limiting hole portion having a taper angle, the inner diameter gradually increases forward, and a front hole portion having a relatively large hole diameter is provided at the front end of the limiting hole portion. The spring is housed in the front hole, and it is blocked with a plug to prevent the spring from being ejected. With this structure, after the fixing screw is screwed into the construction hole, the external bolt is quickly inserted through the male screw. A fixing screw capable of quickly connecting the external device, wherein the external device can be connected by screwing. The fixing screw capable of quickly connecting the external device according to claim 1, wherein a rear stage of the spring is a multi-circular wire body having a dense pitch, and a front stage is a multi-circular wire body having a coarse pitch. A fixing screw that can quickly connect the external device. 3. The fixing screw capable of quickly connecting the external device according to claim 2, wherein the inner diameter of the minimum inner hole of the spring is slightly larger than the external diameter of the external thread portion of the external bolt. The fixing screw capable of quickly connecting the external device according to claim 3, wherein the pitch of the linear body around each circumference of the spring is provided so as to mesh with the pitch of the male screw portion of the external bolt. Fixing screw that enables quick connection of devices. 2. A fixing screw capable of quickly connecting the external device according to claim 1, wherein the plug is perforated. 6. A fixing screw capable of quickly connecting the external device according to claim 5, wherein a flange is provided at one end of the plug.

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