JPH05149319A - Suspension device - Google Patents

Abstract

PURPOSE:To prevent a washer from being drawn out of a suspension bolt in tightening a nut in a suspension device for suspending a body to be suspended in relation to a fixed portion. CONSTITUTION:A first and a second projection 15b, 15c which are projected slantwise in the directions opposite to each other with respect to a plate surface of a washer 15 are formed at an edge opposite to a bolt inserting port 15a. A facing distance A between the projections 15b, 15c is larger than an outer diameter of a suspension bolt 13. A separation distance C between the projections 15b, 15c in the direction of the plate surface of the washer 15 is smaller than the outer diameter of the suspension bolt 13. With this constitution, if the washer 15 is inclined in such a manner that the opposed surfaces of the projections 15b, 15c are almost parallel to the suspension bolt 13, the bolt inserting port 15a of the washer 15 can be fitted to the suspension bolt 13. After that, when the washer 15 is returned into a horizontal state, the washer 15 can be prevented from being drawn out of the suspension bolt 13 by the projections 15b, 15c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension device for suspending an object to be suspended from an appropriate stationary portion.

[0002]

2. Description of the Related Art Conventionally, in this kind of suspension device,
There is a configuration shown in FIG. In this, for example, a range hood fan is hung from the ceiling of a kitchen (not shown).

That is, the hood body 2 of the range hood fan is attached to the hanging bolt 1 hung from the ceiling, which is a stationary portion.
By inserting a bolt insertion hole (not shown) formed in the upper plate portion of the hood body and tightening the upper plate portion of the hood main body 2 so as to be sandwiched between the washers 3 and 3 by the nuts 4 and 4, It is configured to suspend a food fan.

In the above apparatus, as shown in FIG.
The washer 3 is formed with a substantially U-shaped bolt fitting inlet 3a that opens at the outer peripheral end. After the hood body 2 is temporarily fixed by the nuts 4 and 4, the washer 3 is laterally passed through the bolt fitting inlet 3a. The suspension bolt 1 is fitted into the suspension bolt 1, and then the nuts 4 and 4 are tightened.

[0005]

However, the washer 3
When the nuts 4 and 4 are tightened, the bolt fitting port 3a is opened at the outer peripheral end thereof.
There is a problem that the washers 3, 3 are easily separated from the hanging bolt 1 with the rotation of 4.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a hanging device in which a washer does not come off from a hanging bolt when tightening a nut.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a suspension bolt hanging from a stationary portion, a pair of nuts screwed on the suspension bolt and positioned above and below the object to be suspended, and a bolt having an outer peripheral end opening. A washer having a fitting port, the bolt mounting hole of the suspended body is inserted into the hanging bolt, and the washer is laterally fitted into the bolt mounting hole insertion portion of the hanging bolt through the bolt fitting port. In the above, in the suspension device configured to suspend the suspended body by tightening the suspended body with the nuts through the washers, in the facing edge portion of the bolt fitting inlet of the washer, The first and second projecting pieces are formed so as to project in a mutually inclined direction in an inclined manner, and the facing distance between these projecting pieces is set to be larger than the outer diameter dimension of the hanging bolt. Between both protrusions Having said distance between the gold plate surface direction was set to be smaller than the outer diameter of the hanger rod.

[0008]

According to the above-mentioned means, since the facing distance between the first projecting piece and the second projecting piece is set larger than the outer diameter dimension of the hanging bolt, the facing surfaces of both projecting pieces and the hanging bolt are set. If the washer is tilted so that and are substantially parallel, the washer can be laterally fitted into the suspension bolt through the bolt fitting port, and
After that, if the washer is returned to the horizontal state, the washer becomes orthogonal to the hanging bolt.

In this case, since the distance between the protruding pieces in the direction of the washer plate surface is set to be smaller than the outer diameter of the hanging bolt, the washer is prevented from coming off from the hanging bolt by the protruding pieces. become.

Moreover, since both of the projecting pieces project in a direction opposite to each other with respect to the washer plate surface, when the nuts are tightened, the washers act as so-called spring washers, and as a result, the nuts are tightened. Will be prevented from loosening.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

First, in FIG. 5, a range hood fan 11 as a suspended object is hung on the ceiling of the kitchen, and its schematic structure will be described. The inside of the hood body 11a of the range hood fan 11 will be described. Is provided with a blower, a filter, and the like (not shown). When the blower is driven, indoor air containing oil smoke is sucked up into the hood body 11a and discharged outside through an exhaust duct (not shown). It is like this.

Four bolt mounting holes 11c (only one is shown) are formed at each corner of the top plate 11b of the hood body 11a.

By the way, the above range hood fan 11
Is suspended from the ceiling as a stationary part by a suspension device 12 described below.

As shown in FIGS. 3 and 4, the suspending device 12 has four hanging parts (two in FIG. 3,
Only one hanging bolt 13 is shown in FIG.
And the threaded portion 13 formed at the lower end of each hanging bolt 13.
a pair of nuts 14a and 14b which are respectively screwed into a and located above and below the top plate 11b of the hood body 11a, and a washer 1 interposed between the pair of nuts 14a and 14b, respectively.
It is composed of 5 and 15.

As shown in FIG. 2, the washer 15 is provided with a bolt fitting port 15a for fitting the washer 15 from the lateral direction of the hanging bolt 13. The bolt fitting port 15a is substantially U opened at the outer peripheral end of the washer 15.
A first protrusion 15b and a second protrusion 15c are provided at opposing edges of each bolt fitting port 15a. As shown in FIG. 1, the projecting pieces 15b and 15c are inclined and protrude in opposite directions, and the inclined surfaces thereof are substantially opposed to each other in parallel.

The facing distance A between the projecting pieces 15b and 15c is set to be larger than the outer diameter B of the hanging bolt 13, and moreover, in the washer 15 plate surface direction between the projecting pieces 15b and 15c. The separation distance C is set to be smaller than the outer diameter dimension B of the hanging bolt 13.

Next, the procedure for attaching the range hood fan 11 will be described with reference to FIGS. 3 and 4.

First, the upper nut 1 is attached to each suspension bolt 13.
The top plate 11b of the hood body 11a with the 4a screwed on.
Each of the bolt mounting holes 11c is inserted into the hanging bolt 13. Then, the lower nuts 14b of the respective hanging bolts 13 are screwed into the nuts 14a, 14b by screwing them together.
The hood body 11a is temporarily held between them.

After this, washers 15, between the nut 14a and the top plate 11b and between the nut 14b and the top plate 11b, respectively.
15 is inserted, but this is done as follows.

That is, the first and second protrusions 15b and 15c
The washer 15 is tilted so that the facing surface of the washer is substantially parallel to the hanging bolt 13, and the washer 15 is attached to the bolt fitting port 15a.
Through the hanging bolt 13 from the lateral direction. In this case, since the facing distance A between the projecting pieces 15b and 15c is larger than the outer dimension B of the hanging bolt 13, both projecting pieces 15b and 15c.
The hanging bolt 13 can be inserted between c.

After that, when the washer 15 is returned to the horizontally mounted state, the distance C in the plate surface direction of the washer 15 between the protruding pieces 15b and 15c is smaller than the outer diameter dimension B of the hanging bolt 13,
The washer 15 is secured to the hanging bolt 13 by the projecting pieces 15b and 15c.

Then, when the nuts 14a and 14b are tightened, the nuts 14a and 14b are inserted through the washers 15 and 15.
The top plate 11b of the hood body 11a is sandwiched between them, and the hood body 11a is attached to the suspension bolt 13, so that the range hood fan 11 is suspended from the ceiling.

When the nuts 14a and 14b are tightened, the washer 15 is retained by the hanging bolt 13 by the projecting pieces 15b and 15c, so that the washer 15 can be prevented from coming off the hanging bolt 13.

Further, at the time of the above mounting, the washers 15,
Since there are oblique projections 15b and 15c on 15,
It can be expected that the washers 15 and 15 are elastically bent and deformed, respectively, and that the projecting pieces 15b and 15c can also bite into the opposite sides, that is, the washers 15 and 15 act as so-called spring washers. .. Therefore, the nuts 14a, 14b
Can be prevented.

Although the range hood fan 11 is applied as the suspended object in the above embodiment, it may be applied, for example, when suspending a ceiling ventilation fan or a water receiving tank of a washing machine. ..

Besides, the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be carried out without departing from the scope of the invention.

[0028]

As is apparent from the above description, according to the suspending device of the present invention, the first and second slanting protrusions are provided at the opposite edges of the bolt fitting port so as to be inclined in mutually opposite directions. And the facing distance between the two protruding pieces is set larger than the outer diameter of the hanging bolt, and the distance between the protruding pieces in the washer plate surface direction is the outer diameter of the hanging bolt. Since the setting is made smaller, it is possible to prevent the washer from coming off from the hanging bolt when tightening the nut, and it is possible to prevent the nut from loosening, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a washer showing an embodiment of the present invention.

FIG. 2 is a perspective view of a washer

FIG. 3 is a vertical sectional front view showing a suspension device and a suspended body.

FIG. 4 is an enlarged view of a portion K in FIG.

FIG. 5 is a perspective view showing a suspension device and a suspended body.

FIG. 6 is a view corresponding to FIG. 3 showing a conventional example.

FIG. 7 is a view corresponding to FIG.

[Explanation of symbols]

11 is a range hood fan (body to be suspended), 11c is a bolt mounting hole, 12 is a suspension device, 13 is a suspension bolt, 14
Reference numerals a and 14b are nuts, 15 is a washer, 15a is a bolt fitting port, 15b is a first projecting piece, and 15c is a second projecting piece.

Claims (1)

[Claims] 1. A suspension bolt depending from a stationary portion,
The suspension bolt includes a pair of nuts screwed to the suspension body and positioned above and below the suspended body, and a washer having a bolt fitting inlet opening at an outer peripheral end. The suspension bolt has a bolt mounting hole of the suspended body. By inserting the washer into the bolt mounting hole insertion portion of the suspension bolt from the side through the bolt fitting port, and then tightening the suspended body with the nuts through the washer. In a configuration in which a suspended body is suspended, first and second projecting pieces are formed at opposite edges of a bolt fitting port of the washer so as to be inclined and project in mutually opposite directions. In addition, the facing distance between the two protruding pieces is set to be larger than the outer diameter of the hanging bolt, and the distance between the protruding pieces in the washer plate surface direction is set to be smaller than the outer diameter of the hanging bolt. Characterized by That suspension device.