KR20070076353A - Dust preventive hinge - Google Patents

Abstract

A dust prevention hinge is provided to prevent the generation of metal dust and to wash off dust attached on components easily. The dust prevention hinge(10) comprises a pair of wing members(11,12) made with metal and fixed to a door and a door frame of a clean room entrance and equipped with boss portions(11a,12a) formed along the edge of plate portions(11b,12b), pivot bearing members made with fluorine, inserted to the boss portions of the wing members and equipped with a seal portion(14h) placed to surround a thrust bearing to prevent the scatter of dust from the circumference of a thrust bearing, a thrust bearing installed between flanges of the pivot bearing members, a pivot inserted to the pivot bearing members and connected with the wing members, and caps(17) installed on upper and lower ends of the pivot bearing members.

Description

Dust-proof hinges {DUST PREVENTIVE HINGE}

1 is a front view of the dust-proof hinge according to the invention.

2 (a), 2 (b) and 2 (c) are cross-sectional views taken along line A-A, line B-B and line C-C of FIG. 1, respectively.

3 is a perspective view of a dust-proof hinge installed on the door and the door frame.

4 (a) is a front view of the wing member in which a part is shown in cross section, and FIG. 4 (b) is a top view of the wing member in which a part is shown in cross section.

(A) is a front view of a pivot receiving member, FIG. 5 (b) is sectional drawing along the B-B line, and FIG. 5 (c) is a bottom view seen from the bottom.

FIG. 6 (a) is a front view of the pivot receiving member different from FIG. 5, FIG. 6 (b) is a sectional view taken along the line B-B, and FIG. 6 (c) is a bottom view seen from the bottom.

7 is an enlarged cross-sectional view of an end portion of a pivot receiving member of a dust-proof hinge.

<Description of the code>

10 dust preventing hinge 11 wing member

12: wing member 13: pivot receiving member

13e: thin protrusion 14: pivot receiving member

14e: thin protrusion 14f: sealing

15: thrust bearing 16: pivot

The present invention relates to a dust-proof hinge used in a clean room such as a semiconductor manufacturing facility or a food hygiene environment facility.

In general, the hinge is formed by connecting two metal wing members each having a shaft portion at an edge thereof through a pivot made of metal through each shaft portion, and either of the two metal wing members. It is fixed to the door frame side of this doorway, and the other side is fixed to the door side. The weight of the door is hung between two shaft parts of the wing member made of metal, and when the door is opened and closed, both wing members made of metal face each other and wear, so that metal dust is generated. Such metal dust is suspended in the air, causing a decrease in cleanliness in the clean room.

Therefore, the applicant has already proposed the patent 2959309 as a means for suppressing dust generation. This is achieved by inserting a bush made of synthetic resin into only the shaft portion of a wing member made of either metal, passing a pivot therein, and connecting the wing members made of two metals, in order to suppress the occurrence of metal dust. It is effective.

However, in order to maintain good cleanliness in the clean room, in addition to enhancing the effect of suppressing the occurrence of metal dust, cleaning and maintenance of the clean room is required, in which case the hinge is also cleaned.

Patent Document 1: Patent No. 2958309

Therefore, an object of the present invention is to provide an anti-dusting hinge that can improve the effect of suppressing the generation of metal dust more than a conventional hinge, and can perform cleaning relatively easily at the time of cleaning maintenance.

In the present invention, in the hinge connecting a pair of wing members having a shaft portion at the edge by a pivot passing through each shaft portion, each of the pair of wing members is provided with a shaft portion at almost the entire length of the edge, Pivot receiving members made of resin, one end of which is closed and an opening is formed at the other end, are inserted into these shaft portions, and each pivot receiving member is inserted with the openings opposite to each other, and a pair of mutually opposing pairs is provided. A bearing is interposed between the ends of the pivot receiving member, and one of the pivot receiving members is provided with a dust-proof hinge, in which a sealing portion surrounding the bearing from the circumference is provided. Here, it is preferable that the pivot receiving member made of resin is formed of a resin having a relatively high wear resistance such as a fluororesin.

In the present invention, since the pivot receiving member is formed of a resin, generation of metal dust due to friction with the pivot is prevented. In addition, since the pivot receiving member is closed at one end, a pair of the pivot receiving member is covered from both ends of the pivot, and the pivoting member is rotatably confined inside the pivot receiving member. Even if dust is generated, the dust is trapped without being scattered from the upper and lower ends of the shaft portion of the wing member.

In addition, since the bearings provided between the ends of the pair of pivot receiving members are surrounded by a sealing part provided on one of the pivot receiving members, the dust generated from the bearings or the dust generated by the friction between the pivot and the pivot receiving members is near the bearing. It stays inside the seal so that it does not fly out of the gap.

In addition, each pair of wing members is provided with a shaft portion at almost the entire length of the edge, and each pivot portion is inserted with a pivot receiving member made of resin having one end blocked and an opening formed at the other end thereof. Since the pivot is inserted in the arrangement in which the openings face each other, and the pair of wing members are connected by the pivot, the dust-proof hinge of the present invention merely slides one of the wing members in the axial direction of the pivot. The assembled pair of wing members can be disassembled. Therefore, when the dust-proof hinge of the present invention is fixed to the door and the door frame, the pair of wing members can be disassembled in the fixed state without removing the respective wing members from the door and the door frame.

In the anti-dust hinge of the present invention, a thin protrusion is provided at the opposite ends of the pair of pivot receiving members to extend into the gap between the pivot and the bearing, and the thin protrusion is provided with the pivot and the bearing. It is preferable to set it as the collar which prevents contact between them.

(The best form to carry out invention)

Hereinafter, although demonstrated with reference to drawings, this invention is not limited to this.

1 is a front view of the dust-proof hinge 10 according to the present invention, Figure 2 (a), 2 (b) and 2 (c) is a cross-sectional view taken along the line AA, BB, CC line of Figure 1, respectively. to be.

The dust-proof hinge 10 is composed of two wing members 11 and 12 made of metal, pivot members 13 and 14 made of fluorine resin, a thrust bearing 15 and a pivot 16, The cap 17 is provided in the upper and lower ends of the pivot receiving members 13 and 14. As shown in FIG. 3, the dust prevention hinge 10 is fixed to one of the wing members 11 to the door 30, and the other wing member 12 to the door frame of the clean room entrance. It is fixed to (31).

Next, each structure of the dust prevention hinge 10 is demonstrated in detail.

Although the two wing members 11 and 12 made of metal are not specifically limited, it is possible to use a member formed in the same shape and dimensions, and the dust-proof hinge 10 of FIG. It is connected at the rotation position. When using the two wing members 11 and 12 formed in the same shape and dimension in this way, the number of parts of the dustproof hinge 10 can be reduced, and the manufacturing process can be simplified.

These wing members 11 and 12 have shaft portions 11a and 12a formed almost the entire length of the edges of the plate portions 1lb and 12b, as shown in Fig. 4A. Cutting portions 11c and 12c are formed at the upper ends of the shaft portions 11a and 12a, and a plurality of holes 11d and 12d are formed in the plate-shaped portions 1lb and 12b for inserting screws or the like. Formed.

Two types of the pivot receiving members 13 and 14 are used.

As shown in Figs. 5 (a) to 5 (c), the pivot receiving member 13 has a bottom portion 13b installed at one end of the cylindrical portion 13a and is blocked, and the other end of the cylindrical portion 13a is blocked. An opening 13c is formed in the flange, and a flange 13d is provided around the opening 13c, and a thin protrusion 13e extending from the opening 13c protrudes on the flange 13d, and is provided with a flange. A coupling protrusion 13f is formed below 13d. As shown in Fig. 2 (a), the pivot receiving member 13 is inserted into the shaft portion 11a of the wing member 11, and the engaging projection 13f is a cutout portion of the shaft portion 11a. It fits in 11c, and is combined. When the hinge is opened and closed by this fitting state, the pivot receiving member 13 is unified with the wing member 11 and swings. Moreover, the cap receiving part 13f protrudes and is installed in the bottom part 13b of the cylindrical part 13a, and the cap 17 is fitted here and it is combined.

Next, as shown in Figs. 6 (a) to 6 (c), the pivot receiving member 14 is blocked by being provided with a bottom portion 14b at one end of the tubular portion 14a. An opening 14c is formed at the other end, a flange 14d is provided around the opening 14c, and a thin protrusion 14e extending from the opening 14c protrudes on the flange 14d, An engaging projection 14f is formed below the flange 14d. As shown in Fig. 2 (a), the pivot receiving member 14 is inserted into the shaft portion 12a of the wing member 12. At this time, the engaging projection 14f is a cutout portion of the shaft portion 12a. It fits in 12c, and is combined. By the fitting engagement, the pivot receiving member 14 is integrated with the wing member 12 even when the hinge is opened and closed. In addition, a cap receiving portion 14g protrudes from the bottom portion 14b of the cylindrical portion 14a, and the cap 17 is fitted into and coupled thereto.

The above is the structure substantially the same as the pivot receiving member 13, but the characteristic structure of the pivot receiving member 14 is the sealing part 14h raised in the tubular shape from the edge of the flange 14d. The sealed portion 14h is formed to have a larger diameter than the cylindrical portion 14a, and is disposed so as to surround the thrust bearing 15 from the periphery as shown in FIG. 2 (a), from the vicinity of the thrust bearing 15. Suppresses dust scattering.

FIG. 7 is an enlarged cross-sectional view of the vicinity of the end portions of the pivot receiving members 13 and 14 of the anti-dust hinge 10, and is a cross section at a position different from that of FIG. 2A and 7, the pivot receiving member 13 is inserted into the shaft portion 11a of the wing member 11, and the pivot receiving member 14 is the wing member 12. It is inserted into and mounted on the shaft portion 12a of the shaft, the pivot 16 is inserted into these pivot receiving members 13 and 14, and the two wing members 11 and 12 made of metal are connected. The pivot receiving members 13 and 14 are rotatably provided with respect to the pivot 16. Then, a thrust bearing 15 is installed between the flanges 13d and 14d of the pivot receiving members 13 and 14, and thin projections 13e and 14e are provided in the gap between the thrust bearing 15 and the pivot 16. The thin projections 13e and 14e, which are fitted in, function as collars that prevent contact between the thrust bearing 15 and the pivot 16. Thus, since the dust-proof hinge 10 uses the thrust bearing 15 and the pivot receiving members 13 and 14 which consist of fluororesins with little frictional resistance, it can maintain sufficient swinging capability even in the absence of grease. .

As shown in Figs. 2 and 7, the flange 13d of the pivot receiving member 13 is mounted on the thrust bearing 15, and the flange 13d and the thrust bearing 15 are particularly made of adhesive or the like. It is not fixed. Accordingly, when the wing member 12 is fixed in the dust-proof hinge 10 assembled in the state of FIG. 1 and only the wing member 11 is pulled up in the arrow UP direction (FIG. 1), the wing member 11 pivots. The dust prevention type hinge 10 can be disassembled by being pulled out of the pivot 16 together with the receiving member 13. That is, even when the dust-proof hinge 10 is fixed to the door 30 and the door frame 31 with screws etc. as shown in FIG. 3, the door 30 is opened and the arrow UP direction (FIG. 3) opens. Only by lifting the door 30, the wing member 11 is pulled out of the pivot 16 and disassembled from the connection state with the wing member 12. By disassembling in this way, when cleaning the components which comprise the dust prevention type hinge 10, it becomes possible to remove dust etc. which were attached to this easily.

In the anti-dust hinge 10, the pivot members 13 and 14 are closed at one end of the cylindrical bodies 13a and 14a by the bottom portions 13b and 14b, and these pivot members 13 and 14 are closed. As shown in Fig. 2 (a), the pivot 16 is covered from both ends of the pivot 16 to trap the pivot 16 inside the pair of pivot receiving members 13 and 14. Therefore, although dust is generated due to the friction between the pivot 16 and the pivot members 13 and 14, the dust does not scatter from the upper and lower ends of the shaft portions 11a and 12a of the wing members 11 and 12. Trapped.

In the dust-proof hinge of the present invention, the effect of suppressing the generation of metal dust can be improved than that of the conventional hinge, and cleaning can be performed relatively easily at the time of cleaning maintenance.

Claims (2)

In the hinge which connected the pair of wing members which have a shaft part in an edge to penetrate each shaft part, Each of the pair of wing members is provided with a shaft portion at almost the entire length of the edge, and each of the shaft portions has a pivot receiving member made of resin having one end blocked and an opening formed at the other end thereof. The pivots are inserted in an arrangement in which the openings face each other, the bearings are interposed between the ends of the pair of opposing pivot receiving members, and one of the pivot receiving members is provided with a seal surrounding the bearing from the periphery. Anti-dust hinge. The method of claim 1, Opposite ends of the pair of pivot receiving members are formed with thin protrusions to fit in the gap between the pivot and the bearing, and these thin protrusions are collars that prevent contact between the pivot and the bearing. Dust-proof hinges.

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