JPH0594511U - Material to be tapped - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a member to be tapped that facilitates tapping by tapping. [Structure] A cross-shaped hole 5 having a plurality of tops 6 facing the center of a tapping screw 1 is provided at a portion to be tapped on a substrate 2 which is a member to be tapped. The diameter between the facing top portions 6 is made smaller than that of the tap portion 1a of the screw 1. When the board 2 and the member to be fastened 4 are overlapped and the screw 1 is screwed into the hole portion 5, only the top portion 6 is tapped by the tap portion 1a. The screw 1 is screwed on and the substrate 2 and the member 4 are fastened as they are. Since only the top 6 is configured to be tapped with the screw 1, it is possible to cut the female screw only with respect to the top 6, and it is possible to tap with a weaker force than in the conventional case. Therefore, the screw 1 can be quickly and easily screwed in and screwed in, and workability can be improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a member to be tapped which is tapped with a tap.

[0002]

[Prior Art]

 There is a tap in which tapping is performed with a screw (tapping screw) itself and the screw is screwed to fasten the substrate and the member to be fastened as they are. FIG. 4 shows an example of this.

In FIG. 1, reference numeral 1 is a tapping screw, and tapping (shaft portion) 1 a of the tapping screw 1 performs tapping. Reference numeral 2 denotes a substrate which is a member to be tapped and has a perfect circular hole 3 to be tapped with a tapping screw 1 formed on a substrate 2 made of resin or the like. The hole 3 is formed to have a diameter slightly smaller than that of the tap portion 1a of the tapping screw 1. Reference numeral 4 denotes a member to be fastened, which has a hole 4a having a diameter slightly larger than that of the tapped portion 1a of the tapping screw 1.

Then, for example, the base plate 2 and the member to be fastened 4 are overlapped with each other with the hole 3 of the substrate 2 and the hole 4 a of the member to be fastened 4 corresponding to each other. When the tapping screw 1 is screwed into the hole 4a, the peripheral surface of the substrate 2 facing the hole 3 is tapped by the tap portion 1a. Further, when the tapping screw 1 is screwed, the substrate 2 and the member to be fastened 4 are fastened as they are.

[0005]

[Problems to be solved by the device]

 In the tapping mechanism of FIG. 4, in order to tap the peripheral surface of the substrate 2 with respect to the hole 3, it is necessary to cut a female screw on the entire peripheral surface. Therefore, in order to perform tapping with the tap portion 1a, it is necessary to screw in the tapping screw 1 with a strong force, which causes a problem of poor workability.

Therefore, the present invention provides a member to be tapped that makes tapping with a tap quick and easy.

[0007]

[Means for Solving the Problems]

 In this invention, in a tapped member to be tapped with a tap, a hole having a plurality of tops is formed at a portion of the tapped member to be tapped so as to face substantially the center of the tap.

[0008]

[Action]

 When the tap (tapping screw) 1 is aligned and screwed into the center of the hole 5, only the top 6 of the member 2 to be tapped is tapped. Since the female screw is cut only on the top portion 6, tapping can be performed with a weaker force than in the conventional case, and tapping can be performed quickly and easily.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, parts corresponding to those in FIG. 4 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the figure, 5 is a hole, and this hole 5 is formed in a cross shape at the position of the substrate 2 to be tapped. Therefore, right-angled top portions 6 are formed at four locations on the substrate 2 so as to extend toward the center of the hole portion 5 (center of the tapping screw 1). Further, the distance between the facing top portions 6 is slightly smaller than that of the tap portion 1a of the tapping screw 1. Other configurations are the same as those in the example of FIG.

In this example, the tapping screw 1 is inserted into the hole 4a by stacking the substrate 2 and the member to be fastened 4 so that the hole 5 and the hole 4a correspond to each other. When the tapping screw 1 is screwed in, only the top portion 6 of the substrate 2 is tapped by the tap portion 1a (see FIGS. 2 and 3). That is, the female screw is cut only on the top portion 6.

Further, when the tapping screw 1 is screwed, the substrate 2 and the member to be fastened 4 are fastened as they are. Although the tapping screw 1 is held at four points on the top portion 6 of the substrate 2, it is set so that the substrate 2 and the member to be fastened 4 can be fastened only by screwing at the top portion 6.

According to this example, since only the top portion 6 of the substrate 2 is configured to be tapped with the tapping screw 1, tapping can be performed with a weaker force than in the past, and the tapping screw 1 can be quickly and easily. Can be screwed in and screwed on. Therefore, according to this example, workability can be improved.

In the above-described embodiment, the tops 6 of the substrate 2 are formed at four right angles, but the number and shape of the tops are not limited to this. In this case, it is necessary to set so that the board and the member to be fastened can be fastened only by screwing the tapping screw at the top.

Further, in the above-mentioned embodiment, the tapping is performed by the tapping screw 1, but the tapping means is not limited to this. For example, it can be applied in the same manner by using a handle tap or the like, and the same effect can be obtained.

[0016]

[Effect of the device]

 According to the present invention, since the tapping is performed only on the tops of the tapped member, the female screw can be cut only on the tops, and the tapping can be performed with a weaker force than in the past. it can. Therefore, according to this invention, tapping can be performed quickly and easily.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment.

FIG. 2 is a cross-sectional view taken along the line II of FIG.

FIG. 3 is a sectional view taken along line II-II in FIG.

FIG. 4 is a perspective view of a conventional example.

[Explanation of symbols]

 1 tapping screw 1a tap part 2 substrate 4 fastened member 5 hole part 6 top part

Continuation of the front page (72) Inventor Hiromichi Nishirenchi 1-2-11 Ikenohata, Taito-ku, Tokyo Inside Aiwa Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A tapped member to be tapped by a tap, wherein a hole having a plurality of tops is provided at a portion of the tapped member to be tapped so as to face substantially the center of the tap. The member to be tapped.