JP2023118388A - hinge - Google Patents

Abstract

To provide a novel hinge with a simple configuration different from the conventional hinges, which avoids direct metal-to-metal or resin-to-resin contact.SOLUTION: In a hinge 1, washers 5 and 6 include annular erect edges 5a and 6a that erect by a height dimension smaller than a thickness dimension of flanges 7a, 8a, 9a and 10a so as to engage with an outer periphery of any of the contacting flanges 7a, 8a, 9a and 10a. Thereby a gap G2 is ensured between two of the facing flanges 7a, 8a, 9a and 10, and a gap G1 is ensured between inner peripheries of the washers 5 and 6 and an outer periphery of a pivot 4. Therefore, metal-to-metal contact or resin-to-resin contact is avoided, and associated dust generation is avoided.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to hinges used for the doors of devices in factories where precision parts such as semiconductors are produced, where the generation of dust and dirt should be avoided, and for the opening and closing doors of clean rooms.

A hinge is generally composed of a pair of blades and a pivot that is inserted into a shaft tube of the blades and connects the blades, and is used as a connecting member such as a device control panel door or a room entrance door. Blades and pivots are usually made of metal from the viewpoint of strength and durability. At manufacturing sites, measures are required to prevent scattering of metal powder from hinges. As a means to solve this problem, in order to avoid direct metal-to-metal contact, a hinge has been proposed in which a bushing or washer made of an oil-impregnated synthetic resin material with a hardness different from that of the metal material is interposed in the sliding part (patent Reference 1).

Japanese Unexamined Patent Application Publication No. 2006-10a3378

An object of the present invention is to provide a novel hinge that has a simple structure different from the conventional hinges and avoids direct contact between metals or resins.

In the following description reference is made to the figures of the accompanying drawings, but the invention is not limited thereto.
A hinge 1 of the present invention for solving the above problems comprises a metal first blade 2 having a plurality of first axial tubes 2a and 2b facing each other on the same axis and spaced apart from each other; A second metal vane 3 having a second axial tube 3a interposed between 2a and 2b so as to align their axes, and the axially opposing ends of the first and second axial tubes 2a, 2b and 3a. Synthetic resin bushings 7, 8, 9, 10 having flanges 7a, 8a, 9a, 10a abutting on the respective opposing end faces, and the opposing faces of the flanges 7a, 8a, 9a, 10a. The first and second shaft tubes 2a, 2b, 3a are inserted through metal washers 5, 6, bushes 7, 8, 9, 10, and washers 5, 6 interposed therebetween. and a pivot 4 connecting the vanes 2,3. The washers 5 and 6 are ring-shaped that stand up with a height dimension smaller than the thickness dimension of the flanges 7a, 8a, 9a and 10a so as to engage with the outer periphery of any of the flanges 7a, 8a, 9a and 10a in contact. Equipped with upstanding edges 5a, 6a to ensure a gap G2 between the two opposing flanges 7a, 8a, 9a, 10a and between the inner periphery of the washers 5, 6 and the outer periphery of the pivot 4 A gap G1 is ensured between the two, and contact between metals and between resins is avoided.

According to the present invention, it is possible to provide a novel hinge with good cost performance that avoids contact between metals or resins with a simple structure different from conventional hinges.

1 is a front view of a hinge according to the invention; FIG. FIG. 2 is an enlarged cross-sectional view of the shaft portion of the hinge of FIG. 1; FIG. 3 is an enlarged view of part III of FIG. 2; FIG. 3 is an enlarged view of part IV of FIG. 2;

Embodiments of the present invention will be described with reference to the drawings.
In the figure, the hinge 1 includes a pair of first and second wings 2 and 3, a pivot 4, washers 5 and 6, bushes 7, 8, 9 and 10 and a washer 11. As shown in FIG.

The first blade 2 is made of metal and has two first axial tubes 2a, 2b on one side edge. The shaft tubes 2a and 2b are provided on one side edge of the blade 2 and are vertically spaced apart from each other along the vertical axis of the pivot 4 in the figure.

The second blade 3 is made of metal, and has a second axial tube 3a in the vertical middle portion of one side edge. The shaft tube 3a is interposed between the shaft tubes 2a and 2b and is provided so as to align with them.

The bushes 7, 8, 9, 10 are made of oil-impregnated synthetic resin and have flanges 7a, 8a, 9a, 10a at one end, respectively. The outer diameters of the bushes 7, 8, 9, 10, excluding the flanges 7a, 8a, 9a, 10a, are designed so that they can be fixed by being fitted into the shaft tubes 2a, 2b, 3a, and relative rotation does not occur between them. It's becoming

The outer diameters of the flanges 7a, 8a, 9a, 10a are smaller than the outer diameters of the shaft tubes 2a, 2b, 3a.

The washers 5 and 6 are made of flat round metal and have annular raised edges 5a and 6a on their peripheral edges. The raised edges 5a, 6a are formed to have a height dimension smaller than the thickness dimension of the flanges 7a, 8a, 9a, 10a and an inner diameter along the outer peripheral surface thereof.

The pivot 4 is made of metal, is inserted into the bushes 7, 8, 9, 10 so as to be slidable relative to each other, protrudes from the upper and lower ends of the first shaft tubes 2a, 2b, and connects with the upper and lower ends of the shaft tubes 2a, 2b. A metal washer 11 is interposed between them and they are crushed and caulked in the axial direction, and the pivot shaft 4, the washer 11 and the blades 2 are integrated so as not to rotate relative to each other.

In the hinge 1 having the above members, as shown in FIG. 2, a bush 7 is attached to the shaft tube 2a of the blade 2 from its lower end, and bushes 8 and 9 are attached to the shaft tube 3a of the blade 3 from its upper and lower ends. is fitted and fixed, and a bush 10 is fitted and fixed to the shaft tube 2b of the blade 2 from its upper end.

In this state, the flange 7a of the bush 7 is on the lower end surface of the shaft tube 2a of the blade 2, the flanges 8a and 9a of the bushes 8 and 9 are on both upper and lower end surfaces of the shaft tube 3a of the blade 3, and the flange 10a of the bush 10 is in this state. are in contact with the upper end surfaces of the shaft tubes 2b of the blades 2, respectively.

A washer 5 is placed between flanges 7a and 8a of bushes 7 and 8 facing each other in the axial direction of pivot 4, and a washer 6 is placed between flanges 9a and 10a of bushes 9 and 10 facing each other in the same direction. interposed.

In this state, the ring-shaped rising edge 5a of the washer 5 is fitted to the outer periphery of the flange 8a, and the ring-shaped rising edge 6a of the washer 6 is fitted to the outer periphery of the flange 9a. Therefore, as shown in FIGS. 3 and 4, a gap G1 is formed between the outer circumference of the pivot 4 and the inner circumferences of the washers 5 and 6. As shown in FIG.

Also, since the standing height of the ring-shaped standing edges 5a, 6a of the washers 5, 6 is smaller than the thickness dimension of the flanges 8a, 9a, as well shown in FIGS. A gap G2 is formed between the upper end of the shaft tube 3a and the upper end of the upright edge 6a and the lower end of the shaft tube 3a. Therefore, the washers 5 and 6 do not come into contact with the pivot shaft 4, nor do they come into contact with the shaft tubes 2a and 3a.

For example, when the door to which the hinge 1 is attached is opened and closed, the blades 2 and 3 rotate relatively around the pivot 4, and the bushes 7, 8, 9, and 10 move through the shaft tube 2a through the washers 5 and 6. , 3a and 2b are slidably rotated around the pivot shaft 4. As shown in FIG. Since the washers 5 and 6 are interposed between the bushes 7 and 8 and between the bushes 8 and 9 during the sliding rotation, sliding friction between resins does not occur. Also, since there is a gap G1 between the washers 5, 6 and the pivot shaft 4, and a gap G2 between the annular rising edges 5a, 6a of the washers 5, 6 and the shaft tube 8, the metal between them is No sliding friction between them.

1 hinge 2 first blade 2a first axial tube 2b first axial tube 3 second blade 3a second axial tube 4 pivot 5 washer 5a rising edge 6 washer 6a rising edge 7 bushing 7a flange 8 bushing 8a flange 9 bushing 9a flange 10 Bush 10a Flange 11 Washer G1 Gap G2 Gap

Claims (2)

a metallic first blade having a plurality of first shaft tubes facing each other on the same axis with a gap therebetween;
a metal second blade having a second shaft pipe interposed between the first shaft pipes with their axes aligned;
a bush made of synthetic resin, which is fitted in each of the axially opposite ends of the first and second shaft tubes and has a flange abutting against each of the opposite end faces;
a metal washer interposed between the opposed surfaces of the flanges;
a pivot that is inserted through the first and second shaft tubes via the bush and the washer and connects the first and second blades,
The washer has an annular standing edge that rises with a height dimension smaller than the thickness dimension of the flange so as to engage the outer circumference of any of the abutting flanges, thereby providing two of the opposing flanges. A hinge, wherein a gap is secured between flanges and a gap is secured between an inner circumference of the washer and an outer circumference of the pivot shaft. The pivot has crimped portions with enlarged diameters at both ends protruding from the outer ends of the first axial tubes of the first blades,
2. The hinge according to claim 1, wherein a metal washer is fixed to said pivot shaft and interposed between said crimped portion and said outer end of said first shaft tube facing thereto.

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