JP3348062B2 - Metal dust prevention hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge used in a clean room for manufacturing precision parts such as semiconductors.

[0002]

2. Description of the Related Art In general, a hinge is formed by rolling a part of two metal blades into a cylindrical shape to form a bearing cylinder , which is formed through a metal pivot shaft. , The metal parts of the hinges are in sliding contact with each other, and abrasion dust is generated,
This floats in the clean room due to a ventilation flow or the like, which causes a problem in the semiconductor manufacturing process.

[0003] The applicant of the present invention has previously disclosed Patent No. 29583.
As a patent No. 09, there is disclosed one in which a bush made of synthetic resin is fitted into only one of the bearing cylinders to suppress the generation of the metal dust, and this has achieved a reasonable result. However, the generation of metal dust is caused not only by the bearing cylinders but also by friction between these bearing cylinders and the pivot.

[0004]

The problem to be solved by the present invention is that
Standing work is easy, not just between bearing sleeves,
Make sure that no metals come into contact with each other even between the bushing and the pivot.
To provide the market with hinges that suppress the generation of metal dust.

[0005]

SUMMARY OF THE INVENTION According to the present invention, metal dust prevention is provided.
The type hinge is a bearing cylinder at the end of two metal blades 2a and 2b.
3a and 3b are formed respectively, and end portions of the bushings 3a and 3b are formed.
Attach the synthetic resin bush 11 inside the
The metal pivot 4 is passed through the bushing 3a, 3b through the bush 11 , and the metal blades 2a, 2b are connected to each other to form
The flange 10 formed at the end of the resin bush 11 is
When the hinge 1 is brought into contact , the bearing sleeves 3a, 3b
Axial grooves 6a, 6b are formed in the inner peripheral surfaces 5a, 5b of the end
And an end of the synthetic resin bush 11 near the flange 10.
An axial projection 13a is formed on the outer peripheral surface, and the projection 13a is
The grooves 6a and 6b are firmly fitted into the synthetic resin
The shoe 11 is mounted on the bearing cylinders 3a and 3b.

In assembling the hinge of the present invention, each metal
Synthetic resin is applied to the ends of the bearing cylinders 3a and 3b of the blades 2a and 2b.
When the bush 11 made of steel is fitted and mounted, the bushing 3a,
3b at the axial grooves 6a, 6b on the inner peripheral surfaces 5a, 5b.
The protrusion 13a in the axial direction of the bush 11 made of synthetic resin is firmly fitted.
Mate. Thereafter, the metal pivot 4 is connected to the bushings 3a, 3b.
And a pair of metal blades inserted into the bush 11 made of synthetic resin.
2a and 2b are connected.

In using the hinge of the present invention, for example,
One metal blade 2a is fixed to a door frame, and the other metal blade
The root 2b is fixed to the door. Of a pair of metal blades 2a, 2b
A bush 11, 1 made of synthetic resin is provided between the bearing cylinders 3a, 3b.
One flange 10, 10 is inserted to open and close the door
When the flanges 10 made of synthetic resin come into sliding contact with each other,
Metal dust is generated by sliding contact between the bearing cylinders 3a and 3b
do not do. The metal pivot 4 is located at the end of the bearing cylinder 3a, 3b.
The area is surrounded by a synthetic resin bush 11
In other parts, the metal pivot 4 and the bush 3
a space between a and 3b corresponding to the thickness of the bush 11
, The metal pivot 4 and the bearing sleeves 3a, 3b
There is no generation of metal dust due to sliding contact with. The movement is light because there is no contact between the metal parts , and there is no squeak noise generated when the metal parts come into contact with each other.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS.
The bearing sleeve 3a of one metal blade 2a is spaced
The upper and lower two metal blades 2b
b is is provided with three under the upper, middle spaced, upper and lower two
The bearing cylinder 3b is about half as long as the middle-stage bearing cylinder 3b .

The length of the synthetic resin bush 11 is about 約 of the length of the bearing cylinders 3a and 3b to be fitted respectively .
And a length of about 1/12
You .

In the embodiment shown in FIG . 3, one metal wing is used.
One bearing sleeve 3a of the root 2a is provided in the middle part,
The upper and lower two bearing sleeves 3b of the metal blades 2b are installed at intervals.
The bushing 3a is formed longer than the bushing 3b.
ing.

In another embodiment shown in FIG . 4, a bushing 3a
The member mounted on each side of the bearing cylinder 3b is made of synthetic resin.
Synthesizing not forming bush 11 but axial projection 13
It is a resin washer. This axial projection 13
Are firmly fitted into the grooves 6a, 6b of the bearing cylinders 3a, 3b.
I will.

A synthetic resin bush 11 or a synthetic resin
As the material of the shear 12, polyethylene, Poripuropin, polyamide, although a fluorine resin is preferable, abrasion
There is no particular limitation as long as the resin has a property and a small friction coefficient.

[0013]

The hinge of the present invention constructed as described above.
Then, the metal pivot 4 is located near the ends of the bushings 3a and 3b.
Surrounded by a synthetic resin bush 11
In other parts, the metal pivot 4 and the bearing cylinders 3a, 3b
Corresponding space is placed on the thickness of the front Symbol bush 11 between
The sliding contact between the metal pivot 4 and the bearing cylinders 3a, 3b
No metal dust is generated.

In addition, the bearing sleeve 3 of each metal blade 2a, 2b
a, bush 11 made of synthetic resin is fitted into the end of 3b.
When attaching, the inner peripheral surfaces 5a, 5b of the end portions of the bearing cylinders 3a, 3b
The shaft of the synthetic resin bush 11 is inserted into the axial grooves 6a and 6b of
By firmly fitting the projections 13a in the
Drop of the resin bush 11 from each bearing cylinder 3a, 3b
The hinge assembly work
Done.

[Brief description of the drawings]

FIG. 1 is a front view of a longitudinal section of a bearing cylinder portion of a hinge according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the hinge of FIG. 1;

FIG. 3 is a partially cutaway front view of a hinge bearing cylinder according to another embodiment of the present invention.

FIG. 4 is an exploded perspective view of a hinge according to still another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Hinge 2a Metal blade 2b Metal blade 3a Bearing cylinder 3b Bearing cylinder 4 Metal pivot 6a groove 6b groove 10 Flange 11 Synthetic resin bush 12 Synthetic resin washer 13 Projection

Claims (1)

(57) [Claims] 1. A shaft is attached to an end of two metal blades 2a, 2b.
The receiving cylinders 3a and 3b are respectively formed, and the bearing cylinders 3a and 3b are formed.
Attach a synthetic resin bush 11 in the end, and
Through the bush 11, the metal pivot 4 is connected to the bushings 3a, 3b.
To connect the metal blades 2a and 2b to each other,
Flange 10 formed at end of synthetic resin bush 11
Of the bearings 3a, 3b at the inner peripheral surfaces 5a, 5b of the bearing cylinders 3a, 3b.
6a and 6b are formed, and the furan of the synthetic resin bush 11 is formed.
An axial projection 13a is formed on the outer peripheral surface of the end near the die 10.
Then, the projections 13a are firmly fitted into the grooves 6a, 6b.
And attach the synthetic resin bush 11 to the bearing cylinders 3a and 3b
Metal dust prevention type hinge characterized by the following .