JPH0562720U - Fixture - Google Patents

Abstract

(57) [Summary] [Purpose] It can be manufactured at low cost and has good workability. [Structure] A sheet metal having a through hole 1b in the center is bent in a U shape, and the vicinity of an opening end thereof is bent in a saw-like shape to form a nut segment 1 provided with teeth 1c engaging with a male screw of a bolt. A mounting tool which is made of sheet metal and is opened in one surface side 6a and is housed in an outer shell body 6 having a bolt insertion hole 6c in the other surface side 6b.
The tapered portion 6d is provided on the inner wall of the other surface 6b of the outer shell 6 so that the bolt insertion hole 6c and the U-shaped opening side of the nut segment 1 face the outer shell 6. The nut segment 1 is stored. [Effect] Each part can be manufactured by sheet metal working, the number of parts is small, the manufacturing and assembling thereof are easy, and the fixture can be manufactured at low cost. In addition, the fixture can be easily inserted up to near the base of the bolt, and workability is good.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixture.

[0002]

[Prior Art]

 In general, nuts, which are fixtures used to attach fixtures such as lighting fixtures, are made of metal to support its weight, and the cross-section has a hexagonal or other polygonal shape, with a central portion at the center. It has a through hole, and has a female thread on the side wall of the through hole, which can be used for attaching the instrument to various structures by being screwed into a bolt. However, when tightening such a nut on a bolt, it is necessary to rotate the nut from the tip of the bolt without fail, and when the length of the bolt is long, the tightening margin of the screw becomes long. It was necessary to rotate the nut by the length of the length, which had the drawback of degrading workability. Then, a fixture with good workability was devised that solved these drawbacks.

FIG. 4 and FIG. 5 show a conventional mounting tool excellent in workability disclosed in Japanese Utility Model Publication No. 55-48171.

This fixture comprises a nut segment 1 and a nut cover 2 formed by cutting or casting a metal member, and a metal having a female 1a on the inner surface side of the fixture. A nut segment 1, which is configured by dividing a nut made of steel into a plurality of parts on a surface including the axial direction of the nut, is guided by a tapered hole 2a provided on the inner surface of a nut cover 2 having a hexagonal cross section, The sliding guide claws 2b formed integrally with the side wall of the tapered hole 2a prevent the rotation and are slidably accommodated in the axial direction of the nut, and the nut segment 1 with the intermediate washer 3 interposed. The pressing spring 4 constantly presses the narrow side of the tapered hole 2a. Further, a bolt insertion opening 2c is provided at the narrow end of the taper hole 2a, and a lid 5 having a bolt insertion opening 2d is provided at the wide end thereof. Are sandwiched and held between the lid 5 and the intermediate washer 3.

In such a mounting tool, the nut segment 1 is pushed to the wide side of the tapered hole 2a only by inserting the bolt from the bolt insertion port 2c provided at the narrow end of the tapered hole 2a. While inserting the bolt, the fixture can be inserted to a certain position without turning the fixture. After that, the female screw 1a of the nut segment 1 and the male screw of the bolt engage with each other, and the fixture 1 can be rotated a few times. Can be fastened to the bolt.

[0006]

[Problems to be solved by the device]

 However, in the conventional fixture configured as described above, the parts such as the nut segment 1 and the nut cover 2 are manufactured by cutting or casting a metal member, and thus are difficult to process. In addition, the number of parts is large and assembly is complicated, and the manufacturing cost of the fixture is high.

The present invention has been made in view of the above background, and an object of the present invention is to provide a fixture that is inexpensive and has excellent workability.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention has a sheet metal having a through hole 1b substantially in the center thereof bent in a substantially U shape, and has a saw-shaped cross section in the vicinity of the substantially U-shaped opening end. Nut segment 1 formed by engaging teeth 1c with a male screw of a bolt and a sheet metal member that is open on one side 6a and has a bolt insertion hole 6c on the other side 6b. And an outer shell body 6 for accommodating the outer shell body, which is formed on the inner wall of the other surface side 6b of the outer shell body 6 so as to become narrower from one surface side 6a to the other surface side 6b. In addition to providing the tapered portion 6d, the nut segment 1 is housed in the outer shell body 6 with the bolt insertion hole 6c of the outer shell body 6 and the U-shaped opening side of the nut segment 1 facing each other. Is.

[0009]

[Action]

 With this configuration, in the fixture according to the present invention, the parts constituting the fixture can be manufactured by processing a sheet metal, the number of parts is small, the manufacture and assembly are easy, and the fixture is inexpensive. Can be manufactured.

Further, when the attachment tool is fastened to the bolt, if the bolt is inserted into the attachment tool through the bolt insertion hole 6 c of the outer shell 6, the interval between the teeth 1 c of the nut segment 1 is slightly along the tapered portion 6 d. Spreading, the fixture is easily inserted near the root of the bolt, the teeth 1c engage the male screw of the bolt, and by rotating the fixture several times in that state, the fixture can be retightened and the workability is good.

[0011]

【Example】

 1 and 2 show a first embodiment of the present invention, in which the mounting tool is composed of a nut segment 1 and an outer shell 6.

The nut segment 1 is formed by bending a substantially rectangular sheet metal having a through hole 1b in a substantially central portion into a substantially U shape, and folding the vicinity of the substantially U-shaped opening end into a saw-like cross section. A tooth 1c is formed by bending the male screw of the bolt and a side wall closer to the through hole 1b than the tooth 1c is provided with a cut-and-raised portion to form a locking piece 1d.

The outer shell 6 is made of a metal plate, has a hexagonal cross section, opens on one side 6a, has a bolt insertion hole 6c on the other side 6b, and the other side 6b is on the one side 6a. The inner wall of the outer shell 6 is formed with a tapered portion 6d that is narrowed from one surface side 6a toward the other surface side 6b, and the nut segment 1 is housed therein. At this time, a locking hole 6e into which the locking piece 1d is inserted and locked is provided at a position facing the locking piece 1d.

The nut segment 1 configured as described above is housed in the outer shell 6 with its U-shaped opening side facing the bolt insertion hole 6 c on the other surface side of the outer shell 6, and the nut segment 1 of the nut segment 1 is housed. The locking piece 1d is inserted and locked in the locking hole 6e of the outer shell 6 to be assembled as a fixture.

With such a configuration, in the fixture according to the present embodiment, the components constituting the fixture can be manufactured by processing a sheet metal, the number of parts is small, and the manufacture and assembly thereof are easy. Therefore, the fixture can be manufactured at low cost.

Further, when the attachment is fastened to the bolt, if the bolt is inserted into the attachment through the bolt insertion hole 6 c of the outer shell 6, the interval between the teeth 1 c of the nut segment 1 is slightly along the tapered portion 6 d. Spreading, the fixture is easily inserted near the root of the bolt, the teeth 1c engage the male screw of the bolt, and by rotating the fixture several times in that state, the fixture can be retightened and the workability is good.

FIG. 3 shows a second embodiment of the present invention. The difference from the first embodiment is that the nut segment 1 has a locking piece and the outer shell 6 has a locking hole. Instead of providing the outer shell 6, the cross section of the outer shell 6 has a substantially quadrangular shape, the projecting piece 6f is provided at the opening end on the one surface side, and after the nut segment 1 is inserted into the outer shell 6, the projecting piece 6f is directed inward. The structure is similar to that of the first embodiment except that the nut segment 1 is bent to (open side) to prevent the nut segment 1 from coming off and the nut segment 1 is attached to the outer shell 6. With such a configuration, the same effect as that of the first embodiment can be obtained.

[0018]

[Effect of the device]

 With such a configuration, in the fixture according to the present invention, the parts constituting the fixture can be manufactured by processing a sheet metal, the number of parts is small, the manufacturing and assembly are easy, and the fixture is It can be manufactured at low cost.

Further, when tightening the attachment tool to the bolt, if the bolt is inserted into the attachment tool from the bolt insertion hole of the outer shell, the tooth interval of the nut segment spreads slightly along the taper part, and the attachment tool is bolted. It is easily inserted near the root of the tooth, the teeth engage with the male screw of the bolt, and by rotating the fixture several times in that state, the fixture can be tightened further and the workability is good.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the above.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is a side sectional view showing a conventional fixture.

FIG. 5 is an exploded perspective view of the above.

[Explanation of symbols]

 1 Nut Segment 1b Through Hole 1c Teeth 6 Outer Body 6a One Side 6b Other Side 6c Bolt Insertion Hole 6d Tapered Part

Claims (1)

[Scope of utility model registration request] 1. A sheet metal having a through hole at substantially the center is substantially U.
In addition to being bent in a letter shape, the section near the opening end of the substantially U shape is bent in a saw shape to form teeth engaging with the male screw of the bolt, and a nut segment formed of sheet metal and formed on one surface side. A mounting tool that is open and has a bolt insertion hole on the other surface side, and an outer shell for accommodating the nut segment, wherein the inner wall on the other surface side of the outer shell has one surface side. The taper portion is formed so as to narrow toward the other surface side, and the bolt insertion hole of the outer shell and the U-shaped opening side of the nut segment are opposed to the outer shell to accommodate the nut segment. A fixture characterized by having done.