JPH0739134Y2 - Mounting device for hanging bolts - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is mainly used for indoor electrical work in which a predetermined fixture such as a lighting fixture is attached to a double ceiling provided under a concrete slab by using a hanging bolt. TECHNICAL FIELD The present invention relates to a hanging bolt device attachment device suitable for attachment.

(Prior Art) In recent buildings, the number of rooms with low ceilings has increased, and the ridges of the double ceilings have become extremely narrow. Therefore, in the indoor electrical work, when a lighting fixture or the like is attached to the double ceiling provided under the concrete slab, the work shown in FIGS. 5 and 6 is performed. That is, the suspension bolt Q is suspended on the lower surface of the slab T, and the predetermined device P is supported by the fixing nut 30 fixed to the suspension bolt Q.

On the other hand, the air-conditioning lighting fixture described in Japanese Utility Model Laid-Open No. 62-107316 also has a similar configuration. That is, when the lighting fixture is attached to the hanging bolt, the lighting fixture is locked to the hanging bolt with a tightening nut that is screwed from the lower end of the hanging bolt.

(Problems to be solved by the invention) However, if the predetermined device P is placed on the upper surface of the fixing nut 30 fixed to the hanging bolt Q, the fixing nut 30 may be loosened due to the vibration of the device P. There is a possibility that the hanging bolt Q itself may rotate due to shaking or vibration of the device P and the hanging bolt Q.

That is, the suspension bolt Q is often screwed to the insert S embedded in the lower surface of the slab T, as shown in FIG. Therefore, when an external force such as shaking or vibration is applied, the suspension bolt Q itself that suspends the device P may rotate and loosen. And in the worst case,
The suspension bolt Q may come off from the insert S, or the fixing nut 30 may come off from the suspension bolt Q.

At this time, in order to prevent the hanging bolt Q from loosening from the insert S, there is also a means for fixing the hanging bolt Q to the insert S by mounting a nut at a screwing position of the insert S. A nail for fixing the frame, a heat insulating material mounted in the double ceiling R, and the like hinder the work for fixing the hanging bolt Q.

On the other hand, the air conditioning lighting equipment described in Japanese Utility Model Laid-Open No. 62-107316 has the same problem. That is, just placing a predetermined device on the upper surface of the tightening nut fixed to the hanging bolt may cause the tightening nut to loosen due to the vibration of the device, and due to the shaking or vibration of the device or the hanging bolt, For example, the suspension bolt itself may rotate.

Therefore, the present invention has been devised to eliminate the above-mentioned inconvenience, and it is possible to securely fix the device and the hanging bolt, and prevent loosening of the fixing nut or the hanging bolt that locks the device. An object of the present invention is to provide a device for attaching hanging bolts that can be used.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the first means of the present invention is to rotatably insert into a bolt insertion hole P2 into which a hanging bolt Q opened in a predetermined device P can be inserted. A locking nut 1 that has an insertion portion 1A whose lower surface projects into the bolt insertion hole P2 and locks the suspension bolt Q that is inserted into the bolt insertion hole P2 with a screw to lock it on the upper part of the device P, and below the device P. A pressing tool 2 that is pressed by a fixing nut 3 that is screwed to a hanging bolt Q with and is crimped to an instrument P, and an elastic cylinder body that is detachably fitted to the insertion portion 1A inserted into the bolt insertion hole P2 from below the instrument P. Then, the configuration with the adjusting tool 4 for adjusting the height of the locking nut 1 is a means for solving the problem.

(Operation) That is, according to the first means of the present invention, when the insertion portion 1A of the locking nut 1 screwed to the suspension bolt Q in advance is inserted into the bolt insertion hole P2 from the upper surface of the device P, this insertion The bottom surface of the bolt insertion hole P2 of the portion 1A projects into the crocodile. Then, the insertion portion 1A in which the lower surface of the bolt insertion hole P2 projects into the crocodile makes the locking nut 1 rotate on the lower surface of the instrument P.

Further, the tool P is tightened by the fixing nut 3 via the pressing tool 2 between the fixing nut 3 screwed to the suspension bolt Q below the tool P and the tool P, so that the tool P locks. 1 and the fixing nut 3, and the hanging bolt Q is also fixed to the device P.

Further, the adjusting tool 4 formed of an elastic cylinder body is forcedly fitted to the insertion portion 1A from below the instrument P to hold the insertion portion 1A, and assists the rotation operation of the locking nut 1 below the instrument P. It becomes something to do.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 shown in the drawing is a locking nut, and the locking nut 1 is arranged on the upper surface of the predetermined device P (see FIG. 1).
At this time, the fixture P is, for example, a lighting fixture arranged on the double ceiling R, the hanging bolt Q is connected to the insert S arranged on the lower surface of the concrete slab T, and the fixture plate P1 of the fixture P is opened. The hanging bolt Q is inserted into the bolt insertion hole P2 and screwed.

The locking nut 1 in the illustrated example locks the insertion portion 1A penetrating the bolt insertion hole P2 opened in the instrument plate P1 and the upper surface of the peripheral edge of the bolt insertion hole P2 provided at the upper end of the insertion portion 1A. It is composed of a locking portion 1B. At this time, the locking nut 1 shown in FIGS. 1 and 2 uses a so-called T nut. Like the locking nut 1 shown in FIGS. 3 (I) to (III), the shapes of the insertion portion 1A and the locking portion 1B can be arbitrarily selected, and the position of the female screw of the locking nut 1 and Locking part
The length of 1B is also not particularly limited.

Reference numeral 4 is an adjusting tool. The adjusting tool 4 is detachably connected to the insertion portion 1A inserted into the bolt insertion hole P2 of the instrument P to rotate the locking nut 1, and adjusts the mounting height of the locking nut 1. Then, after adjustment, remove from the insertion portion 1A. Further, the adjusting tool 4 is formed of an elastic bottomed cylindrical body which is fitted onto the insertion portion 1A protruding from the lower surface of the insertion hole P2, and the adjustment tool 4 is fitted to the insertion portion 1A from the lower end of the hanging bolt Q. Then, the position of the locking nut 1 is adjusted by rotating the adjusting tool 4 with fingers. At this time, the diameter of the gripped portion of the lower end of the adjusting tool 4 with the fingers can be increased to facilitate gripping, or the tubular adjusting tool 4 may be used (not shown). Further, when the bolt plate hole P2 is long and its diameter is large, such as when the instrument plate P1 is formed thick, the bolt plate hole P2 is large.
It is also possible to insert the adjusting tool 4 in P2 to connect them. At this time, the pressing tool 2 may be a normal washer or may be omitted depending on the size of the fixing nut 3. In addition, this adjusting tool 4 is inserted from the lower surface of the instrument plate P1 into the insertion section.
Anything that can be detachably connected to 1A and whose rotation can be adjusted may be used. Therefore, the shapes of the adjusting tool 4 and the insertion portion 1A can be appropriately changed in design as long as they can be attached to and detached from each other and their positions can be adjusted.

Reference numeral 2 is a pressing tool 2 which is pressed against the lower surface of the peripheral edge of the bolt insertion hole P2 of the device plate P1, and is tightened with a fixing nut 3 which is screwed to the suspension bolt Q on the lower surface of the device P. The pressing tool 2 shown in FIG. 1 is designed so as not to be obstructed by the insertion portion 1A of the locking nut 1 from the lower surface of the instrument plate P1. That is, the strip-shaped plate is bent to form a substantially U-shape, the hanging bolt Q is inserted into the through hole 2A opened in the central portion of the strip-shaped plate, and the bent end portions contact the lower surface of the device P. It is the one to contact. By doing so, the pressing tool 2 can be tightly fixed to the device P without being hindered by the insertion portion 1A protruding from the lower surface of the device plate P1. At this time, FIGS. 4 (I) to (IV) show an example of the outer pressing tool 2 which is adapted when the insertion portion 1A projects below the bolt insertion hole P2. That is, as shown in (I) of FIG.
(II) and (III) having a cylindrical shape, or
As shown in (IV), the U-shaped pressing tool 2 and the fixing nut 3 are integrated. And these pressing tools 2
May be used in combination with a washer or the like.

Next, in order to use this invention, the locking nut 1 is previously screwed to the suspension bolt Q suspended on the insert S,
Next, lift the lighting fixture or the like from below, insert the suspension bolt Q into the bolt insertion hole P2, and insert the locking nut 1 into the insertion portion 1A.
Is inserted into the bolt insertion hole P2. Then, while maintaining this state, the adjusting tool 4 is connected to the insertion portion 1A from below the instrument P, and the adjusting tool 4 is rotated, so that the locking nut 1 of the locking nut 1 is aligned with the mounting position of the instrument P. Adjust the height.
At this time, it is also possible to make adjustments with fingers without using the adjusting tool 4. Further, after adjusting the locking nut 1, the adjusting tool 4 is removed from the insertion portion 1A, the pressing tool 2 is mounted on the lower surface of the tool P, and then the pressing tool 2 is fixed to the tool P by the fixing nut 3 screwed from the lower end of the hanging bolt Q. Crimp it to. As a result, the tool P is sandwiched between the locking nut 1 and the pressing tool 2, and the tool P and the hanging bolt Q are tightly fixed.

(Effect of the Invention) This invention achieves the original purpose by being configured as described above.

That is, the locking nut 1 can be arranged on the upper part of the device P. Therefore, a pair of upper and lower nuts sandwiching the device P
The device P and the hanging bolt Q can be securely fixed with 1,3.

Further, the locking nut 1 can be adjusted from the lower surface of the device P, and the mounting position of the device P can be freely adjusted.

Moreover, since the hanging bolt Q and the device P are integrally fixed, the hanging bolt Q is prevented from loosening from the insert S even if an external force such as vibration or shaking is applied to the device P, and the insert S is prevented.
It is not necessary to mount the nut at the screwing position of and fix the suspension bolt Q to the insert S.

Further, the adjusting tool 4 formed of an elastic tubular body is forcibly fitted to the outside of the tubular insertion portion 1A by using elasticity to insert the insertion portion 1A.
Is held, the position adjustment of the locking nut 1 is extremely facilitated by assisting the rotation operation of the locking nut 1 below the instrument P, and the adjustment work can be simplified.

As described above, according to the present invention, it is possible to securely fix the device and the hanging bolt, and it is possible to prevent the fixing nut for locking the device and the hanging bolt from loosening. It has various practically useful effects, such as being able to securely fix with.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a sectional view of a main part showing a mounted state, and FIG. 2 is a sectional view of a main part showing a state of adjusting a height of a locking nut using an adjusting tool. 3 (I) to (III) are perspective views showing another embodiment of the locking nut, FIG. 4 is a perspective view showing another embodiment of the pressing tool, and FIG.
FIG. 6 is a partially cutaway front view showing a conventional example, and FIG. 6 is a main part sectional view showing the conventional example. P ... Instrument, P1 ... Instrument plate, P2 ... Bolt insertion hole, Q ...
Hanging bolts, R ... Double ceiling, S ... Insert, T ... Concrete slab, 1 ... Locking nut, 1A ... Inserting section, 1B ... Locking section, 2 ... Pressing tool, 3 ... Fixing nut, 4 ... Adjusting tool, 30 ...
Fixed nut.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshio Otsubo 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (72) Inventor Takashi Takahashi 1-2-2 Moto-Akasaka, Minato-ku, Tokyo No.7 Kashima Construction Co., Ltd. (72) Inventor Toshio Nezuka 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Kaneichi Tsujikawa 1-chome Nishikanda, Chiyoda-ku, Tokyo No. 4-5 Toko Electric Works Co., Ltd. (72) Inventor Harumi Shio 1-4-5 Nishikanda, Chiyoda-ku, Tokyo Toko Electric Works Co., Ltd. (72) Inventor Tori Takemoto Edogawa-ku, Tokyo Chuo 1-33 Brest Industrial Research Institute Co., Ltd. (56) References: 62-107316 (JP, U), 61-42721 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A suspension bolt having an insertion portion rotatably inserted into a bolt insertion hole through which a hanging bolt opened in a predetermined device is inserted so that the lower surface of the bolt insertion hole protrudes, and which is inserted into the bolt insertion hole. Locking nut that is screwed to the upper part of the device, a pressing tool that is pressed against the lower surface of the device by a fixing nut that is screwed to the hanging bolt below the device, and an insertion that is inserted into the bolt insertion hole An apparatus mounting device for hanging bolts, characterized in that an elastic tube body that is detachably fitted from below the apparatus to the section is provided with an adjusting tool for adjusting the height of the locking nut.