JP4147425B2 - Dust prevention hinge - Google Patents

Description

  The present invention relates to a hinge that is suitable for use in a clean room or the like and prevents generation of dust due to wear or the like due to use.

  Normally, a hinge that supports a door or the like so that it can be opened and closed is usually composed of two hinge blades, which are alternately combined with a shaft tube portion provided at each end, and a shaft is inserted through the shaft tube portion. Are received by the end surfaces of the adjacent shaft tube portions. Therefore, when the hinge blade swings due to opening / closing of the door, etc., the shaft cylinder end face is loaded with the weight of the door, and the contact surface wears with the passage of time of use, such as metal, resin, etc. Becomes dust and adheres and accumulates on the periphery of the dust.

  When such a situation occurs in a door of a clean room or the like, dust such as metal or resin may enter the clean room depending on the material of the hinge member, which causes a decrease in cleanliness of the clean room. Accordingly, various means have been developed to reduce the wear of the sliding portion of the hinge and suppress the generation of dust.

  That is, bushes are fitted to the end portions of both shaft tube portions so that the end surfaces of adjacent shaft tube portions do not contact each other so that the bushes come into contact with each other (Japanese Patent Application Laid-Open No. 2004-183321, Patent Document). 1), and those provided with a magnet bearing inserted through the shaft at the end face of the shaft tube joint (Japanese Patent Laid-Open No. 2002-89120, Patent Document 2).

However, fine dust is generated in all of these, and it is also generated between the periphery of the shaft and the inner wall surface of the cylindrical portion, and the dust generated on this inner surface is released and dropped from the lower end of the shaft cylindrical portion to the outside. ing.
JP 2004-183321 A JP 2002-89120 A

  In view of the above points, an object of the present invention is to obtain a dust prevention hinge that prevents generation of metal dust and resin dust due to contact between metals or resins while maintaining strength as a hinge.

The dust generation prevention hinge of the present invention is a pair of hinge blades each having a shaft tube portion at each end edge, made of aluminum shaping material, and the surface is subjected to clear coating after anodizing, and the shaft tube portion is Resin having a cylindrical body at the end of the cylindrical main body on each end surface of the axial cylindrical portions facing each other in a hinge formed by aligning the central axes thereof in series and inserting the shaft into the axial cylindrical portion By fitting the cylindrical main body of the shaft receiver made of the shaft receiver, the flanges of the shaft receiver fitted to the adjacent shaft cylinders face each other, and an annular disk, a bearing or the like is placed between the facing flanges. with the intervention, each cylindrical portion, the shaft receiving, by inserting the shaft through bearings etc., in the gap which has between the disk and the bearing of the shaft provided with the resin collar, shaft and bearing There should not directly contact, it becomes fitted a cap having a recess with an inner diameter for receiving the end portion of the shaft to the outer end portion of the shaft cylinder portion. Further, a resin collar is provided on the shaft at a position facing the bearing.

  The hinge of the present invention minimizes the generation of metal dust and resin dust because friction between metals and resins is extremely reduced between the end portions of adjacent shaft cylinder portions of the hinge blade that generates the most metal dust and resin dust. Can be suppressed. Metal dust and resin dust generated on the inner surface of the shaft tube part are contained in the shaft tube by the resin cap fitted to the end of the shaft tube part and are not dissipated outside the hinge, and the clean environment is not deteriorated. Has an effect.

The best mode for carrying out the invention will be described below.
FIG. 1 shows a dusting prevention hinge according to the present invention, in which A is an overall front view, B is a partially enlarged sectional view thereof, and is a sectional view taken along line II in FIG.

The dust-preventing hinge 1 of the present invention has a pair of hinge blades 2a and 2b, and shafts having locking grooves 3 extending in the longitudinal direction of the cylinder on the wall surface of the cylinder at the ends of the hinge blades 2a and 2b. Tube portions 4a and 4b are provided, and the center axis lines XX of the shaft tube portions 4a and 4b are aligned, and the shaft tube portions 4a and 4b are alternately meshed so that the shaft tube portions 4a and 4b are alternately positioned. 5 is inserted. In the illustrated example, the shaft cylinder portion 4a of the hinge blade 2a is provided at two locations on the upper and lower ends, and the shaft tube portion 4b of the hinge blade 2b is provided at one location in the center. The hinge blades 2a, 2b are the materials of aluminum, respectively anodized after being shaped into a predetermined shape integrally with the cylindrical portion 4a or 4b, respectively, and finally subjected to clear baking paint according to acrylic paints, anti-chemical The blades 2a and 2b are assembled with improved performance. The resin shaft receiver 6 shown in FIG. 3 is inserted and fitted into the end portions of the shaft tube portions 4a and 4b at the portions where the end surfaces 5a and 5b of the shaft tube portions 4a and 4b of the hinge blades 2a and 2b face each other. .

The shaft receiver 6 has a flange 8 having an outer diameter substantially equal to the outer diameter of the shaft cylinder portions 4a and 4b at the end of the cylindrical main body 7 into which the shaft 5 is inserted. Then, an engagement protrusion 9 extending in the length direction of the cylindrical main body 7 (length direction of the shaft 5) is provided at the base of the bowl-shaped body 8. The shaft receiver 6 is provided so that the engaging projection 9 is engaged with the groove 3 of the shaft tube portions 4a and 4b and covers the end surfaces 5a and 5b of the shaft tube portion 4a and the shaft tube portion 4b as described above. It is done. The flanges 8 and 8 of the shaft receivers 6 and 6 provided on the shaft cylinder portions 4a and 4b face each other.

  An annular bearing 11 sandwiched between annular disks 10 and 10 is interposed between the facing bowls 8 and 8. The disk 10 is preferably made of resin or stainless steel having high wear resistance and low dust generation. A gap is formed between the annular disks 10 and 10 and the bearing 11 and the shaft 5, and the resin collar 12 is disposed on the shaft 5 at a position where the disks 10 and 10 and the bearing 11 and the shaft face each other in the gap. The shaft 5 and the bearing 11 are not in direct contact with each other.

The shaft tube portion 4a located at the outermost end of the hinge 1 (in the illustrated example, the shaft tube portion 4a is the outermost end, but when the shaft tube portions of the left and right hinge blades are even numbers, The resin cap 14 is fitted to the outer end portion 13 of the shaft tube portions 4a and 4b. Resin cap 14 on the end portion of the cylindrical main body 16 having an outer diameter that may be fitted into the cylindrical portion 4a has a recess 15 having an inner diameter for receiving the end of the shaft 5, barrel portion 4a, 4b outside diameter of the And has a bowl-like body 17 having an outer diameter substantially equal to the outer diameter. An engagement protrusion 18 extending in the length direction of the cylindrical main body 16 is provided at the base of the bowl-shaped body 17. The resin cap 14 is fitted with the cylindrical main body 16 in the shaft tube portion 4a and the engagement projection 18 is fitted in the groove 3 of the shaft tube portion 4a to prevent rotation, and the caulking recess portion 19 of the shaft tube portion 4a. By the caulking, the projecting portion 21 is formed by projecting the inner wall surface of the shaft cylindrical portion 4a to the stepped portion 20 below the cylindrical main body 16, thereby preventing the falling off.

  As described above in detail, the hinge 1 of the present invention interposes the bearing 11 between the adjacent shaft tube portions 4a and 4b, which are most likely to generate dust between the movable members by the opening / closing operation, and the bearing 11 is provided on both surfaces thereof. The discs 10 and 10 that are in contact with the ball are positioned, and the disc 10 is supported by the rod-like body 8 of the resin shaft receiver 6, so that the wear of the movable part is extremely small even when the hinge is opened and closed. Dust hardly enters between the resin shaft holder 6 and the shaft 5 and goes out to the outside. Since the lowermost part of the shaft is covered with the resin cap 14 fitted and fixed to the shaft tube portion 4a, the shaft tube portions 4a and 4b do not leak to the outside and the cleanliness is not lowered.

Table 1 shows a comparison of the amount of dust generated between the hinge of the present invention and the conventional clean hinge and stainless steel hinge.
It is clear that the amount of dust generated by the hinge of the present invention is extremely small.

The hinge of this invention is shown, A is a front view, B is a longitudinal front view of the state cut | disconnected by the II line | wire of FIG. II-II sectional view taken on the line of FIG. 1B. The resin shaft support is shown, A is a plan view, B is a sectional view taken along line BB in FIG. 3A, and C is a side view. A resin cap is shown, A is a top view, B is a sectional view taken along line BB in FIG. 4A, and C is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hinge 2a, 2b Hinge blade | wing 4a, 4b Shaft cylinder part 5 Shaft 5a, 5b End surface 6 Shaft support 7,16 Cylindrical main body 8,17 Rod-like body 10 Disc 11 Bearing 12 Collar 13 Outer end part 14 Cap

Claims (2)

A pair of hinge blades having shaft tube portions at their respective edges are made of aluminum shaping material, the surface thereof is alumite treated and then clear painted, and the shaft tube portions are aligned in series with their center axes aligned. In the hinge formed by inserting the shaft into the shaft cylinder portion, the cylindrical main body of the resin shaft receiver having a cylindrical body at the end of the cylindrical main body on each end face of the shaft cylinder portions facing each other. , The shaft receiving hooks fitted in the adjacent shaft cylinders face each other, and an annular disk, a bearing or the like is interposed between the facing hooks, and each of the shaft cylinders , inserting the shaft through the shaft receiving, bearings, etc., in the gap which has between the disk and the bearing of the shaft the resin color is provided, as the shaft and the bearing is not in direct contact, the Dedusting hinge formed by fitting the cap having a recess with an inner diameter for receiving the end portion of the shaft to the outer end portion of the cylindrical portion.   2. The dust prevention hinge according to claim 1, wherein a resin collar is provided on a shaft facing the bearing.

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