JPH0719614U - Retrofit bolt - Google Patents

Abstract

(57) [Summary] [Purpose] Make it possible to easily attach an additional product to the front side of a shield such as a wall without dropping or shifting the concealed existing product behind the shield. To do. [Structure] A rotation operation portion is formed on at least one end surface of the bolt body, and a stopper taper portion is integrally provided at a midway portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention proposes that if some product is fixed to the concealed part of the retrofitting bolt, especially behind the wall with screws or bolts from the front side, the surface of the wall, etc. where the other product is described in correspondence with the existing product. Concerning retrofitting bolts that are convenient to use when mounting on the side.

[0002]

[Background of device]

 Generally, when there is a shield such as a wall and the product is fastened to the concealed back surface with bolts or screws from the front side, the surface of the shield such as the wall is associated with the existing product. When installing a new product, if you remove all or more of the bolts and screws that have already been used for fastening, the existing product will drop or misalign, and it will be out of reach of the original position. Cannot be returned to.

Therefore, conventionally, when performing the above work, the existing bolts and screws are removed, a long screw is inserted into the hole after the removal and supported, and the work of tightening with a cap nut is repeated in sequence. Was running. However, this work makes it difficult to adjust the length, and even if the long screw is used to support one place, if you tighten it firmly, other existing bolts and screws cannot be removed, making the work extremely difficult and troublesome. It was a thing.

[0004]

[The purpose of the device]

 Therefore, the present invention was made by paying attention to the above-mentioned conventional circumstances, and the problem is solved, and an additional product can be easily dropped from a concealed existing product on the back side of a shield such as a wall. The purpose of the present invention is to provide a post-installation bolt that can be attached to the front surface side of the shield without being displaced.

[0005]

In order to achieve this object, a post-mounting bolt according to the present invention has a rotary operation part formed on at least one end surface of a bolt body, and a stopper taper part in the middle part. The feature is that they are integrated.

[0006]

[Action]

 With the above configuration, the existing bolts are replaced one by one with the retrofitting bolts according to the present invention and temporarily fixed, and then the screw holes of the additional product are fitted into the extended portions of the retrofit bolts. By operating the rotary operation unit with a screwdriver or the like and screwing in, it is possible to install additional products in the desired form.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a post-mounting bolt embodying the present invention, and FIG. 2 is a sectional view of the same in use.

In these drawings, reference numeral 1 denotes a metallic post-mounting bolt body. The bolt 1 has a minus-shaped rotating operation portion 2 formed on one end surface thereof, and a stopper taper portion 3 is integrally provided at an intermediate portion thereof, and an upper surface of the stopper taper portion 3 is formed. 4 (rotation operation part 2 side) is formed as a smooth surface.

The post-installation bolt 1 according to the present embodiment is configured as described above. To use the post-installation bolt 1, first, an existing bolt (not shown) is provided on the concealed portion of the shield A such as a wall. From the state in which the existing product B is attached in), the existing bolt is sequentially replaced with the post-installation bolt 1 according to the present embodiment, and the existing product is temporarily fixed in the original position. Next, a screw hole of the additional product C is fitted in the extended portion of the post-installed bolt, that is, the portion between the upper surface 4 of the taper portion 3 and the rotary operation portion 2, and a screwdriver or the like is applied to the rotary operation portion 2 from that state and rotated. The additional product C can be attached by screwing in. At this time, since the upper surface 4 of the tapered portion 3 is a smooth surface, no gap is created between the shield A and the additional product C.

Although the post-installation bolt 1 according to the present embodiment is constructed and used as described above, the rotary operation portion 2 is not limited to the minus groove but may be the plus groove because of the construction. Needless to say, the position, length and diameter of the bolt 1 itself can be applied and changed according to the purpose.

[0011]

[Effect of device]

 The retrofit bolt according to the present invention is constructed and used as described above. Therefore, when an existing product is attached with a bolt or screw to a hidden part, which is the back surface of a shield such as a wall, it is easy to distinguish the existing product without causing displacement. It is possible to install additional products on the surface side of a shield such as a wall without requiring skilled skills.

[Brief description of drawings]

FIG. 1 is a perspective view of a post-mounting bolt embodying the present invention.

FIG. 2 is a cross-sectional view showing a state of actual use.

[Explanation of symbols]

 1 Retrofit bolt body 2 Rotating operation part 3 Stopper taper part 4 Upper surface A Shield B Existing product C Additional product

Claims (2)

[Scope of utility model registration request] 1. A bolt for retrofitting, wherein a rotary operation portion is formed on at least one end surface of the bolt body, and a stopper taper portion is integrally provided at an intermediate portion. 2. The post-installation bolt according to claim 1, wherein an upper surface of the stopper taper portion is a smooth surface.