JP4108098B2 - Dust-proof hinge - Google Patents

Description

  The present invention relates to a dust-proof hinge used in a clean room or the like in a semiconductor manufacturing facility or a food sanitation environment facility.

  In general, a hinge is formed by connecting two metal blade members each having an axial tube portion at an end thereof, and penetrating a metal pivot through each shaft tube portion. One of the members is fixed to the door frame side of the doorway, and the other is fixed to the door side. Between the shaft tube portions of the two metal blade members, the weight of the door is applied. When the door is opened and closed, both the metal blade members are rubbed and worn to generate metal dust. Such metal dust floats in the air and causes a decrease in cleanliness in the clean room.

Therefore, the present applicant has already proposed Japanese Patent No. 2958309 as a means for suppressing dust generation. This is made by inserting a synthetic resin bushing into only the shaft tube of one metal blade member and connecting the two metal blade members through the pivot to suppress the generation of metal dust. It is effective in that it does.
However, in order to maintain the cleanliness in the clean room well, in addition to enhancing the effect of suppressing the generation of metal dust, cleaning maintenance of the clean room is also required. In such a case, the hinge is also cleaned. It will be.
Patent No. 2958309

  Therefore, an object of the present invention is to provide a dust prevention type hinge that can further improve the metal dust generation suppressing effect as compared with a conventional hinge and can be relatively easily cleaned during cleaning maintenance.

  In the present invention, in a hinge in which a pair of blade members each having a shaft tube portion at an end edge are connected by a pivot that penetrates each shaft tube portion, the pair of blade members each have a shaft tube portion substantially the entire length of the end edge. These shaft tube portions are respectively provided with resin-made pivot bearing members that are closed at one end and formed with an opening at the other end, and the openings are opposed to each pivot bearing member. In this case, a pivot is inserted, a bearing is interposed between the ends of the pair of opposed pivot bearing members, and one pivot bearing member is provided with an encircling portion that surrounds the bearing from the periphery. A type hinge is provided. Here, the resin-made pivot bearing member is preferably formed from a resin having a relatively high wear resistance such as a fluororesin.

In the present invention, since the pivot bearing member is made of resin, generation of metal dust due to friction with the pivot is prevented. The pivot bearing member is closed at one end, and a pair of pivot bearing members are mounted from both ends of the pivot shaft, and the pivot shaft is rotatably enclosed inside the pivot bearing member. Even if dust is generated due to friction between the pivot and the pivot bearing member, the dust is contained without being scattered from the upper and lower ends of the shaft tube portion of the blade member.
Further, since the bearing provided between the end portions of the pair of pivot bearing members is surrounded by the surrounding portion provided in the one pivot bearing member, dust generated from the bearing and friction between the pivot shaft and the pivot bearing member. The dust generated by is kept inside the surrounding portion so as not to be scattered from the gap near the bearing.
Further, each of the pair of blade members is provided with a shaft cylinder portion at almost the entire length of the edge, and the shaft cylinder portion includes a resin pivot bearing member in which one end is closed and an opening is formed at the other end. Since the pivot is inserted into each pivot bearing member so that the openings face each other and the pair of blade members are connected by the pivot, in the dust prevention type hinge of the present invention, By simply sliding the blade members in the axial direction of the pivot, the assembled pair of blade members can be disassembled. Therefore, when the dust prevention hinge of the present invention is fixed to the door and door frame, the pair of blade members can be disassembled in a fixed state without removing each blade member from the door and door frame. become.

  In the dust-preventing hinge of the present invention, the opposing ends of the pair of pivot bearing members are provided with thin protrusions extending so as to fit into the gap between the pivot and the bearing, and these thin protrusions are Preferably, the collar prevents contact between the pivot and the bearing.

  In the dust prevention type hinge of the present invention, the effect of suppressing the generation of metal dust can be improved as compared with the conventional hinge, and cleaning at the time of cleaning maintenance can be performed relatively easily.

  Hereinafter, the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

FIG. 1 is a front view of a dust prevention hinge 10 according to the present invention, and FIGS. 2 (a), 2 (b), and 2 (c) are respectively taken along lines AA, BB, and CC in FIG. FIG.
The dust prevention hinge 10 is composed of two metal blade members 11 and 12, fluororesin pivot bearing members 13 and 14, a thrust bearing 15, and a pivot 16, and a pivot bearing member. Caps 17 are provided at the upper and lower ends of 13 and 14. For example, as shown in FIG. 3, the dust prevention hinge 10 has one blade member 11 fixed to a door 30 and the other blade member 12 fixed to a door frame 31 of a clean room entrance.

Next, each configuration of the dust prevention hinge 10 will be described in detail.
The two blade members 11 and 12 made of metal are not particularly limited, but members formed with the same shape and dimensions can be used, and the dust prevention hinge 10 of FIG. These same members are connected at a rotational position of 180 degrees. Thus, when using the two blade members 11 and 12 formed with the same shape and dimensions, the number of parts of the dust prevention type hinge 10 can be reduced and the manufacturing process can be simplified.
As shown in FIG. 4 (a), the blade members 11 and 12 are such that the shaft tube portions 11a and 12a are formed over almost the entire length of the end edges of the plate-like portions 11b and 12b. Notches 11c and 12c are formed at the upper ends of the shaft cylinder portions 11a and 12a, and a plurality of holes 11d and 12d for inserting screw nails and the like are formed in the plate-like portions 11b and 12b.

Two types of pivot bearing members 13 and 14 are used.
As shown in FIGS. 5A to 5C, the pivot bearing member 13 is closed by providing a bottom portion 13b at one end of the cylindrical portion 13a, and an opening 13c at the other end of the cylindrical portion 13a. A flange 13d is formed around the opening 13c, a thin protrusion 13e extending from the opening 13c is projected on the flange 13d, and an engagement protrusion 13f is formed on the lower side of the flange 13d. As shown in FIG. 2A, the pivot bearing member 13 is inserted into the shaft tube portion 11a of the blade member 11, and at this time, the engaging protrusion 13f is a notch portion of the shaft tube portion 11a. 11c. Due to this fitting state, the pivot bearing member 13 swings integrally with the blade member 11 when the hinge is opened and closed. Further, a cap receiving portion 13f is projected from the bottom portion 13b of the cylindrical portion 13a, and the cap 17 is fitted therein.

Next, as shown in FIGS. 6A to 6C, the pivot bearing member 14 is closed by providing a bottom portion 14b at one end of the cylindrical portion 14a and opening at the other end of the cylindrical portion 14a. 14c is formed, a flange 14d is provided around the opening 14c, a thin protrusion 14e extending from the opening 14c is projected on the flange 14d, and an engaging protrusion 14f is formed on the lower side of the flange 14d. . As shown in FIG. 2 (a), the pivot bearing member 14 is inserted into the shaft tube portion 12a of the blade member 12. At this time, the engaging protrusion 14f is a notch portion of the shaft tube portion 12a. 12c is fitted. By this fitting, the pivot bearing member 14 is integrated with the blade member 12 even when the hinge is opened and closed. A cap receiving portion 14g protrudes from the bottom portion 14b of the cylindrical portion 14a, and the cap 17 is fitted therein.
The above is substantially the same configuration as the pivot bearing member 13, but the characteristic configuration of the pivot bearing member 14 is an encircling portion 14h raised in a tubular shape from the periphery of the flange 14d. The surrounding portion 14h is formed with a diameter larger than that of the cylindrical portion 14a, and is disposed so as to surround the thrust bearing 15 from around as shown in FIG. 2A, and dust scattering from the vicinity of the thrust bearing 15 is performed. Suppress.

  FIG. 7 is an enlarged cross-sectional view of the vicinity of the ends of the pivot bearing members 13 and 14 in the dust prevention hinge 10, which is a cross-section at a position different from that in FIG. 2A and 7, the pivot bearing member 13 is inserted into the shaft tube portion 11 a of the blade member 11, and the pivot bearing member 14 is inserted into the shaft tube portion 12 a of the blade member 12. Then, the pivot 16 is inserted into the pivot bearing members 13 and 14, and the two blade members 11 and 12 made of metal are connected. The pivot bearing members 13 and 14 are provided so as to be freely rotatable with respect to the pivot 16. A thrust bearing 15 is provided between the flanges 13d and 14d of the pivot bearing members 13 and 14, and the thin protrusions 13e and 14e are fitted into the gap between the thrust bearing 15 and the pivot 16, and these thin protrusions 13e and 13e 14 e functions as a collar that prevents contact between the thrust bearing 15 and the pivot 16. Thus, since the dust prevention type hinge 10 uses the thrust bearing 15 and the pivot bearing members 13 and 14 made of a fluororesin having a low frictional resistance, sufficient swinging is possible even in a non-grease state. Ability can be maintained.

  As shown in FIGS. 2 and 7, the flange 13d of the pivot bearing member 13 is placed on the thrust bearing 15, and the flange 13d and the thrust bearing 15 are fixed with an adhesive or the like. Is not to be done. Therefore, in the dust prevention type hinge 10 assembled in the state of FIG. 1, when the blade member 12 is fixed and only the blade member 11 is pulled up in the arrow UP direction (FIG. 1), the blade member 11 is associated with the pivot bearing member 13. Thus, the dust prevention hinge 10 can be disassembled. That is, as shown in FIG. 3, the dust prevention type hinge 10 opens the door 30 even when it is fixed to the door 30 and the door frame 31 with screw nails or the like, and opens the door 30 in the arrow UP direction (FIG. 3). By simply lifting, the blade member 11 is extracted from the pivot 16 and disassembled from the connected state with the blade member 12. By disassembling in this way, when the parts constituting the dust prevention hinge 10 are washed, it is possible to easily remove dust and the like attached thereto.

  Moreover, in the dust prevention type hinge 10, the pivot bearing members 13 and 14 are ones in which the ends of the cylindrical bodies 13a and 14a are closed by the bottom portions 13b and 14b, and these pivot bearing members 13 and 14 are shown in FIG. As shown to a), it covers from the both ends of the pivot 16, and the pivot 16 is enclosed in a pair of pivot bearing members 13,14. Therefore, even if dust is generated due to friction between the pivot 16 and the pivot bearing members 13, 14, the dust is contained without being scattered from the upper and lower ends of the shaft tube portions 11 a, 12 a in the blade members 11, 12.

It is a front view of the dust prevention type | mold hinge concerning this invention. (A) (b) (c) is sectional drawing along the AA line, BB line, and CC line in FIG. 1, respectively. It is a perspective view of a dust prevention type hinge attached to a door and a door frame. (A) is a front view of the blade member partially shown in cross section, (b) is a top view of the blade member partially shown in cross section. (A) is a front view of a pivot bearing member, (b) is a sectional view taken along line BB, and (c) is a bottom view as seen from below. (A) is a front view of a pivot bearing member different from FIG. 5, (b) is a sectional view taken along line BB, and (c) is a bottom view as seen from below. It is sectional drawing to which the end part vicinity of the pivot bearing member of the dust prevention type | mold hinge was expanded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Dust prevention type hinge 11 Blade member 12 Blade member 13 Pivot bearing member 13e Thin projection part 14 Pivot bearing member 14e Thin projection part 14f Surrounding part 15 Thrust bearing 16 Pivot

Claims (2)

  In a hinge in which a pair of blade members having shaft cylinder portions at the end edges are connected by pivots penetrating the shaft tube portions, the pair of blade members are each provided with a shaft tube portion over almost the entire length of the edge, These shaft tube portions are respectively inserted with resin-made pivot bearing members that are closed at one end and formed with an opening at the other end, and the pivots are inserted into the respective pivot bearing members so that the openings face each other. A dust prevention type hinge in which a bearing is provided between the ends of the pair of pivot bearing members opposed to each other, and one pivot bearing member is provided with a surrounding portion surrounding the bearing.   Thin protrusions are formed at opposite ends of the pair of pivot bearing members so as to fit into the gap between the pivot and the bearing, and these thin protrusions make contact between the pivot and the bearing. The dust prevention type hinge according to claim 1, wherein the dust prevention type hinge is used as a collar to prevent.

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