JP2005024023A - Bolt supporting metal fitting to channel material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bolt supporting metal fitting to a channel material capable of easily hooking a bolt to the inside of a lip of the channel material with no special work with the bolt to be connected to the channel material. <P>SOLUTION: The bolt supporting metal fitting is attached to the head B1 of a bolt B, and is hooked inside the lip C1 of the channel material. The bolt B is inserted in an insert hole 1A which hooks with the head B1 of the bolt B, and the head B1 of the bolt B is forcedly pinched by a pinching part 2A for fixing the head B1. The bold supporting metal fitting forms an U shape in cross section with a band-like locking piece 1 with the insert hole 1A opened and a pair of engagement pieces 2 which are bent and extended from both ends of the width of the locking piece 1, to engage with the head B1 of the bolt B. The engagement piece 2 is provided with the pinching part 2A. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bolt support metal fitting for a channel material used when, for example, an instrument or the like is mounted on a channel material, or when the channel material is mounted on an H-shaped steel or an I-shaped steel.
[0002]
[Prior art]
When mounting fixtures such as lighting fixtures on the channel material, bolts are mounted on the channel material, and the lighting fixture is fixed with the bolts. On the other hand, when the channel material is mounted on the H-shaped steel or the I-shaped steel, the clamp mounted on the shaped steel and the channel material are connected by bolts. In this way, when using the channel material, the bolt uses a locking nut that locks to the opening of the channel material, or a locking portion that locks to the opening is provided on the head of the bolt. Special bolts are used.
[0003]
The mounting bracket described in Patent Document 1 is used when a lighting fixture or the like is mounted on a channel material. A special locking portion is fixed to the head of the bolt, and this locking portion is used as a channel material opening. This is a mounting bracket that is locked to the inside of the lip portion. This locking part is locked inside the lip part by rotating the locking part by 90 ° after being inserted into the channel material from the opening of the channel material.
[0004]
On the other hand, the support metal fitting described in Patent Document 2 is a metal fitting used when the channel material is suspended from the suspension bolt, and is a support provided to fix the locking nut inside the lip portion of the channel material. It is a metal fitting. In this support bracket, a holding piece for holding the locking nut from below is provided, and the stepping locking piece provided on the holding piece is fixed to the lip portion of the channel material, so that the locking nut is attached to the lip portion. It can be fixed to.
[0005]
Each of the support brackets is a support bracket previously proposed by the applicant of the present application, and has been devised so as to improve workability in the operation of connecting the bolt to the opening of the channel material.
[0006]
[Patent Document 1]
Japanese Utility Model Publication No. 50-12171 [Patent Document 2]
Japanese Utility Model Publication No. 50-14708 [0007]
[Problems to be solved by the invention]
According to Patent Document 1 and Patent Document 2 described above, it has succeeded in improving workability when a bolt is connected to the opening of the channel material. However, in Patent Document 1, a locking piece is attached to the head of the bolt. Since fixing is required, there is a disadvantage that the manufacturing cost is higher than that of a normal bolt.
[0008]
Moreover, in the support metal fitting described in Patent Document 2, processing to the side of the suspension bolt is not particularly required. However, since it is necessary to attach a locking nut to the lip portion C1 of the channel material C in advance, Compared with the support metal fitting, there is a disadvantage that much work is required for fixing the stepped locking piece of the holding piece to the lip portion.
[0009]
Therefore, the present invention was created to solve the above-mentioned problems, and it is not necessary to perform special processing on the bolt to be connected to the channel material, and the bolt can be easily placed inside the lip portion of the channel material. It is an object of the present invention to provide a bolt support metal fitting to the channel material that can be locked to the frame.
[0010]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the first means of the present invention is mounted on the head B1 of the bolt B, inserted into the inside of the opening of the channel material C, and rotated inside the channel material to rotate the channel material. It is a bolt support fitting that is locked to the inside of the lip C1, and forcibly sandwiches the insertion hole 1A that passes through the bolt B and engages with the head B1 of the bolt B, and the head B1 of the bolt B. And a sandwiching portion 2A for fixing the head B1.
[0011]
The bolt support fitting in the second means is bent and extended from the substantially strip-shaped locking piece 1 having the insertion hole 1A opened, and both ends of the width of the locking piece 1 and fitted to the head B1 of the bolt B. The pair of fitting pieces 2 form a substantially U-shaped cross section, and the fitting piece 2 is provided with the sandwiching portion 2A.
[0012]
The sandwiching portion 2A of the third means is composed of dot-like locking projections 2Aa protruding from the opposing inner side surfaces of the fitting piece 2, and from the position of the locking projection 2Aa to the locking piece 1 direction. The locking projection 2Aa is provided to prevent the bolt head B1 from coming off by forcibly pressing the bolt head B1.
[0013]
The sandwiching portion 2A of the fourth means is composed of linear locking projections 2Ab projecting on the opposing inner side surfaces of the fitting piece 2, and the locking piece 1 direction from the position of the locking projection 2Ab A means for solving the problem is that the locking projection 2Ab is provided so as to prevent the bolt head B1 from coming off by forcibly pressing the bolt head B1.
[0014]
According to the present invention, the bolt B can be locked to the opening of the channel material C only by mounting the support bracket of the present invention on the head B1 of the bolt B, and the bolt B is attached to the channel material C. Work can be simplified.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The main structure of the support bracket of the present invention has a substantially U-shaped cross section composed of a locking piece 1 and a pair of fitting pieces 2 (see FIG. 1).
[0016]
The locking piece 1 has a substantially band shape, and has an insertion hole 1 </ b> A in the longitudinal center. The insertion hole 1A is for inserting a bolt B connected to the channel material C, and is formed with a diameter to be locked to the head B1 of the bolt B (see FIG. 3). The illustrated bolt B is a hexagonal bolt that is normally used, but a square bolt or the like can also be used.
[0017]
The fitting piece 2 is bent and extended from both width ends of the locking piece 1, and is provided so that the head B <b> 1 of the bolt B is fitted between the locking pieces 1. The entire length of the support bracket of the present invention constituted by the locking piece 1 and the fitting piece 2 is inserted into the channel material C from the opening of the channel material C, and is rotated inside the channel material so that the channel material is The length is set so as to be locked inside the lip C1. In the example of illustration, the notch 1B for rotation is provided in the corner | angular part which the longitudinal both ends of the latching piece 1 oppose (refer FIG. 2). This is provided so that when the locking piece 1 is rotated 90 ° in the direction of the notch for rotation 1B, both end portions of the locking piece 1 abut against the inner surface of the channel material C and cannot be rotated any further. (See FIG. 3). By providing in this way, the position of the support bracket of the present invention inserted into the channel material C can be locked in an optimum state, and the mounting work of the bolt B via the support bracket of the present invention is extremely difficult. It is something that makes it easy.
[0018]
The fitting piece 2 is provided with a clamping portion 2A for forcibly clamping the head B1 of the bolt B and fixing the head B1. The sandwiching portion 2A is for fixing the support bracket of the present invention to the head B1 of the bolt B fitted between the fitting pieces 2, and the head B1 of the bolt B is inserted into the insertion hole 1A of the locking piece 1. When the lower surface is locked, it is provided at a position to be locked to the upper surface of the head B1 (see FIGS. 4 and 6).
[0019]
The sandwiching portion 2A shown in FIG. 4 shows dot-like locking projections 2Aa that project from the opposing inner surfaces of the fitting piece 2, respectively. By forcibly pressing the bolt head B1 in the direction of the locking piece 1 from the position of the locking protrusion 2Aa, the locking protrusion 2Aa prevents the bolt head B1 from coming off. Therefore, the clamping part 2A needs to be set to a clamping force that can push the head B1 with fingers. The locking projection 2Aa can be easily formed by embossing with a press die.
[0020]
5A and 6B show linear locking projections 2Ab that project from the opposing inner side surfaces of the fitting piece 2, respectively. By forcibly pressing the bolt head B1 in the direction of the locking piece 1 from the position of the locking protrusion 2Ab, the locking protrusion 2Ab prevents the bolt head B1 from coming off. The locking projection 2Ab can be formed by press working along the longitudinal side surface of the fitting piece 2. It is also possible to form the fitting piece 2 by bending it.
[0021]
In the illustrated example, the bolt B is locked with the opening of the channel material C facing downward, but the direction of the channel material C is not limited to the illustrated example. Moreover, the use is wide-ranging, such as attaching a lighting fixture or the like to the channel material C with the bolt B using the support bracket of the present invention, or attaching the channel material C to the shape steel.
[0022]
【The invention's effect】
The present invention achieves the original object by being configured as described above.
[0023]
That is, since it has the insertion hole 1A for inserting the bolt B and locking the head B1 of the bolt B and the clamping portion 2A forcibly clamping the head B1 of the bolt B and fixing the head B1. The bolt to be connected to the channel material does not need to be specially processed, and the bolt can be easily locked inside the lip portion of the channel material.
[0024]
In addition, the bolt support metal fitting is a pair of fittings that are bent and extended from both ends of the width of the locking piece 1 and are fitted to the head B1 of the bolt B. Since the joint piece 2 has a substantially U-shaped cross section and the fitting piece 2 is provided with the sandwiching portion 2A, a conventional support in which a locking piece is fixed to the head of the bolt. Manufacturing costs can be reduced compared to metal fittings. Moreover, extremely high locking strength can be obtained by the configuration having a substantially U-shaped cross section. Moreover, it becomes possible to mount | wear with the volt | bolt B when needed by this clamping part 2A.
[0025]
Furthermore, as the sandwiching portion 2A, by providing locking projections 2Aa each projecting on the opposing inner surface of the fitting piece 2, the operation of forcibly pressing the bolt head B1 becomes easy. Further, the processing of the locking protrusion 2Aa can be easily manufactured with a press die.
[0026]
On the other hand, as the sandwiching portion 2A, linear locking projections 2Ab that protrude from the inner surfaces facing each other of the fitting piece 2 are provided so that the locking projections 2Ab function as a reliable stopper.
[0027]
As described above, according to the present invention, it is not necessary to specially process the bolt to be connected to the channel material, and the bolt can be easily locked inside the lip portion of the channel material. Various effects are exhibited.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a working state of an embodiment of the present invention.
FIG. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a side cross-sectional view of a main part showing a use state of the present invention.
FIG. 4 is a side sectional view of a main part showing a mounting state of the present invention.
FIG. 5 is an exploded perspective view showing a use state of another embodiment of the present invention.
FIG. 6 is a cross-sectional side view of a main part showing a mounting state of another embodiment of the present invention.
[Explanation of symbols]
B Bolt B1 Head C Channel material C1 Lip part 1 Locking piece 1A Insertion hole 1B Rotating cutout part 2 Fitting piece 2A Clamping part 2Aa Locking protrusion 2Ab Locking protrusion

Claims (4)

A bolt support fitting that is attached to the head of the bolt, inserted into the inside of the channel material through the opening, and rotated inside the channel material and locked to the inside of the lip of the channel material. A bolt support bracket for a channel member, characterized by having an insertion hole for locking the bolt head and a clamping part forcibly clamping the bolt head to fix the head. The bolt support fitting has a substantially strip-shaped locking piece having the insertion hole formed therein, and a pair of fitting pieces that are bent and extended from both width ends of the locking piece and fitted to the head of the bolt. The bolt support metal fitting to the channel material according to claim 1, which has a U-shape and the fitting portion is provided with the clamping portion. The clamping part is composed of dot-like locking projections protruding from the opposing inner side surfaces of the fitting piece, and forcibly presses the bolt head from the position of the locking projection in the direction of the locking piece. The bolt support fitting to the channel material according to claim 1 or 2, wherein the locking projection is provided so as to prevent the bolt head from coming off. The sandwiching portion is composed of linear locking projections that project from the opposing inner side surfaces of the fitting piece, and forcibly presses the bolt head from the position of the locking projection in the direction of the locking piece. The bolt support fitting to the channel material according to claim 1 or 2, wherein the locking projection is provided so as to prevent the bolt head from coming off.

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