JP2000009128A - Washer and use thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably simplify washer fitting and nut fastening work so as to improve workability and safety of a worker by forming a washer to be detachable from a fastener. SOLUTION: A washer 1 has a cutout 3 cut out toward the center side from one side face of a square plate body of a washer body 2 formed of a steel plate or the like, and springs 4 are provided in a contactless state on both sides in the cross direction on the opening end side. Each spring 4 is a thin strip metal plate formed of spring steel or the like and resiliently provided curved in arc shape. In the case of installing an air conditioner by suspension bolts 21, four bolts 21 are engaged with support pieces 20a, and nuts 22 are thread-fastened to the bolts 21 for temporary fastening. The air conditioner 20 is supported with one hand, and the washer 1 is engaged from the bolt 21 side with the other hand. Then the springs 4 are elastically deformed, and each bolt 21 is completely fitted into the inner side of the cutout 3. Each nut 22 is then properly fastened. The washer 1 can therefore be easily engaged with the bolt 21, and there is no need to continue to manually support the washer 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washer and a method of using the washer which can be applied to a case where an apparatus such as an air conditioner is fixed to a suspension bolt suspended from a ceiling of a building, for example. In particular, the present invention relates to a washer and a method of using the washer which can significantly simplify the work of attaching the washer and tightening the nut, thereby improving workability and operator safety.

[0002]

2. Description of the Related Art The prior art will be described by taking an air conditioner installed on a ceiling in a building as an example. In order to install an air conditioner on a ceiling, a hanging bolt hanging down with one end fixed to the ceiling is often used. When four corners of the air conditioner are supported by the suspension bolts, for example, four suspension bolts are previously suspended from the ceiling at intervals according to the size of the air conditioner.

[0003] At the four corners of the air conditioner, support pieces projecting in the lateral direction are provided. These support pieces have bolt holes into which hanging bolts can be inserted. Then, with the bolt holes of each support piece being inserted through the corresponding suspension bolt, a washer is inserted from below the suspension bolt, and then the nut is tightened. Thereby, the air conditioner is installed on the ceiling while being supported by the suspension bolts.

[0004]

By the way, the work of installing an air conditioner on a ceiling, especially in a living room of a general household, is often performed by one worker using a stepladder. Specifically, the worker lifts the air conditioner and climbs on the stepladder, and engages the support piece of the air conditioner with the suspension bolt. Thereafter, while supporting the air conditioner with one hand, the worker inserts the washer from below the hanging bolt with the other hand and further tightens the nut. As described above, when supporting the four corners of the air conditioner, this operation is performed for each of the four corners.

At this time, while supporting the air conditioner with one hand,
It takes several minutes to insert the washer and tighten the nut. During this time, the worker must work while the scaffold is unstable on the stepladder. Furthermore, the air conditioner is relatively large and heavy, and the work performed while supporting it with one hand is dangerous and difficult. Therefore, it has been desired to provide a means for simplifying this work, improving workability, and ensuring worker safety.

The present invention can solve the above-mentioned problems, and can significantly simplify the work of attaching a washer and tightening a nut, thereby improving workability and worker safety. An object of the present invention is to provide a washer and a method of using the washer.

[0007]

In order to solve the above-mentioned problems, a washer according to the present invention is characterized in that the washer has engaging and disengaging means which can be disengaged from a fastener. The washer can be easily engaged with the fastener with one touch. Moreover, after the engagement is once performed, it is not necessary to continue to support the washer by hand. Therefore, particularly when the fastener is a hanging bolt, the workability is significantly improved and the safety of the worker can be secured. .

Further, the washer of the present invention is characterized in that a notch extending from the side surface toward the center side is formed in the washer body made of a plate-like body. In this washer, the notch may be formed such that the width near the side is smaller than the width near the center.

Further, in a more specific embodiment of the washer of the present invention, a notch extending from the side surface toward the center side is formed in the washer body made of a plate-like body, and the notch is formed at a position near the opening end of the notch. And a protrusion protruding inward from a side surface of the notch. In this washer, the projecting portion may be made of an elastic body.

In a method of using a washer according to the present invention, a notch extending from a side surface toward a center side is formed in a washer body made of a plate-like body, and the width of the notch is closer to the side surface than to the width toward the center side. Use of a small washer;
The notch of the washer is engaged from the side of the bolt with the bolt whose lower end is enlarged in diameter. When the washer is engaged from the side of the bolt and the washer is released, the washer is hooked at the enlarged diameter portion of the bolt and is temporarily fixed. Therefore, it is not necessary for the worker to keep supporting the washer, so that the workability and the safety of the worker can be improved.

Further, the method of using the washer according to the present invention is to form a notch extending from a side surface toward a center side in a washer body made of a plate-like body, and to form the notch at a position near an opening end of the notch. A method of using a washer provided with a protrusion protruding inward from a side surface of the bolt; after a nut is screwed into the bolt, the notch of the washer is engaged from a side of the bolt. . Thereby, the work of attaching the washer and tightening the nut can be significantly simplified, so that the workability and the safety of the operator can be improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are diagrams showing an embodiment of the present invention. FIG. 1A is a perspective view showing a washer according to the present invention, and FIG. 1B is a plan view of the same.
FIG. 2A is a perspective view showing another form of the washer, and FIG.
(B) is the same top view. FIGS. 3A and 3B are explanatory diagrams illustrating a method of using a washer. FIG. 4A is a plan view illustrating another example of the washer according to the present invention, and FIG. 4B is an explanatory diagram illustrating a method of using the washer.

A washer 1 shown in FIG. 1 has a washer body 2 formed of a material such as a steel plate. The washer body 2 is formed by cutting a notch 3 from one side surface (the side surface on the left end side in FIG. 1) of the rectangular plate-shaped body toward the center of the plate. Thus, the washer body 2 has a substantially U-shape in plan view.

At a position near the opening end of the notch 3, springs 4 are provided on both sides in the width direction of the notch 3. The spring 4 is formed of a strip-shaped thin metal plate formed of a material such as spring steel. The metal plate is elastically provided on the inner side surface of the notch 3 in a state of being curved in an arc shape. Thereby, the spring 4
Is formed to project inward from the side surface of the notch 3, but the two springs 4 do not contact each other and there is a gap.

Here, the width of the notch 3 is formed slightly larger than the shaft diameter of the bolt to which the washer 1 is applied. For example,
When the shaft diameter of the bolt is 10 mm, the thickness t1 of the washer body 2
Is 1 mm and the length t2 of one side is 30 mm, the cut length t3 of the notch 3 may be about 22 mm, the width t4 may be about 11 mm, and the length t5 between the fixed ends of the spring 4 is 8 mm.
The length t6 between the two springs 4 may be about 6 mm.

The washer 11 shown in FIG. 2 is different from the washer 1 shown in FIG. That is, the spring 14 of the washer 11 is made of a thin metal piece, and is provided so that one end is fixed to the edge of the notch 3 and the other end extends toward the inside of the notch 3. Both springs 14 do not contact each other, and there is a gap.

Next, a description will be given of a method of using the washer 1, 11 having the above configuration, particularly using the washer 1. When using the washer 11, it goes without saying that the usage method is exactly the same.

In the description of this method of use, a case will be described in which an air conditioner 20 as shown in FIG. 3 (a) is installed by suspension bolts 21 suspended from the ceiling of a building. The suspension bolt 21 hangs with one end fixed to the ceiling. For example, when the four corners of the air conditioner 20 are supported by the suspension bolts 21, the four suspension bolts 21 (FIG. 3) are provided at intervals according to the size of the air conditioner 20.
(Only one is shown in (a)) is suspended from the ceiling in advance. At four corners of the air conditioner 20, support pieces 20a projecting in the lateral direction are provided, and these support pieces 20a are formed with bolt holes through which the suspension bolts 21 can be inserted.

Then, the worker lifts the air conditioner 20 and climbs on a stepladder (not shown), and the support piece 20 of the air conditioner 20 is lifted.
a and the suspension bolt 21 are engaged. After that, the operator screwes the nut 22 to each suspension bolt 21. The nut 22 is not completely tightened but is in a temporarily tightened state. This operation is sequentially performed for each of the four suspension bolts 21.

Next, while supporting the air conditioner 20 with one hand, the washer 1 is gripped with the other hand, and the notch 3 of the washer 1 is held from the side of the hanging bolt 21 as shown in FIG. Engage. At the time of this engagement, first, the spring 4 of the washer 1 is elastically deformed while being in contact with the suspension bolt 21, and when the washer 1 is further pushed forward, the suspension bolt 21 is fitted into the notch 3 at the far side. In a completely fitted state, the washer 1 is in contact with the temporarily tightened nut 22 while engaging with the shaft of the suspension bolt 21, so that it does not drop. After performing this operation for each of the four corners of the air conditioner 20, the nuts 22 are completely tightened.

As shown in FIG. 3A, before the worker lifts the air conditioner 20 and climbs on the stepladder, a nut 23 (an upper nut in FIG. 3A) is attached to each suspension bolt 21. The support piece 20a of the air conditioner 20 may be attached so that the support piece 20a is sandwiched between the two washers 1 and the nut 22 above and below the suspension bolt 21.

As described above, when the washer 1 according to the present invention is used, the suspension bolt 21 can be easily engaged with one touch, and once engaged, it is necessary to continue to support the washer 1 manually. There is no. Thereby, the work is significantly simplified, the workability is improved, and the safety of the worker can be secured.

FIG. 4 shows a washer 31 having a different form from the above-mentioned washers 1 and 11, and a method of using the washer 31. The washer 31 has a disk-shaped washer body 32. A cutout 33 is formed in the washer body 32 from a part of the side surface toward the center. The notch 33 is formed such that the width 33a near the disk side is smaller than the width 33b near the disk center. Further, the suspension bolt 25 shown in FIG.
The lower end 26 has a larger diameter than the trunk 27 (that is, the lower end 26 projects radially).
The diameter of the lower end 26 is larger than the width 33 a of the notch 33, and the diameter of the trunk 27 is slightly smaller than the width 33 a of the notch 33.

When the washer 31 is used for the suspension bolt 25, it is only necessary to insert the washer 31 from the side of the suspension bolt 25 in the same manner as described with reference to FIG. The washer 31 is hooked on the lower end portion 26 of the suspension bolt 25 at the boundary between the width 33a and the width 33b of the notch 33 and is temporarily fixed. Therefore, it is not necessary for the worker to keep supporting the washer, so that the workability and the safety of the worker can be improved. In particular, since the washer 31 can be formed integrally from one material and easily,
It is advantageous for mass production.

It is of course possible to use the washers 1 and 11 for the suspension bolt 25 shown in FIG. 4 and to apply the washer 31 to the one explained in FIG. The washer body 2 of the washers 1 and 11 is square,
Although the washer body 32 of the washer 31 has been described as being circular, these may each have a shape other than a square and a circle (for example, an oval or other more complicated shapes).

[0026]

As described above, according to the present invention,
The work of attaching the washer and tightening the nut can be significantly simplified, and the workability and the safety of the worker can be improved.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a washer according to the present invention, and FIG. 1B is a plan view thereof.

FIG. 2A is a perspective view showing another form of the washer, and FIG. 2B is a plan view of the same.

FIG. 3 is an explanatory diagram illustrating a method of using the washer described in the present embodiment.

FIG. 4 (a) is a plan view showing another example of the washer according to the present invention, and FIG. 4 (b) is an explanatory diagram for explaining a method of using the same.

[Explanation of symbols]

 1, 11, 31 Washer 2, 32 Washer body 3, 33 Notch 4, 14, Spring 21, 25 Hanging bolt 22 Nut

Claims (7)

[Claims] 1. A washer having engaging and disengaging means which can be disengaged from a fastener. 2. A washer, wherein a notch extending from a side surface toward a center side is formed in a washer body made of a plate-like body. 3. The washer according to claim 2, wherein the notch is formed such that a width toward the side is smaller than a width toward the center. 4. A notch extending from a side surface toward a center side in a washer body made of a plate-like body, and a protrusion protruding inward from a side surface of the notch at a position near an opening end of the notch. Washer characterized by having provided. 5. The washer according to claim 4, wherein the protrusion is made of an elastic body. 6. A notch extending from a side surface to a center side is formed in a washer body made of a plate-like body, and the notch is formed such that a width closer to the side surface is smaller than a width closer to the center side. A bolt;
A method of using a washer, wherein the notch of the washer is engaged from a side of the bolt. 7. A notch extending from a side surface toward a center side is formed in a washer body made of a plate-like body, and a protrusion protruding inward from a side surface of the notch at a position near an opening end of the notch. A method of using a washer provided with a portion, comprising: after screwing a nut to a bolt, engaging the notch of the washer from the side of the bolt.