JP2902350B2 - Hinge for hinges - 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 for a folding door used for folding doors of furniture and fittings, and more particularly to a hinge capable of holding a folding door in a closed position.

[0002]

2. Description of the Related Art The present applicant discloses in Japanese Utility Model Publication No. 3-30541 that a pair of mounting plates are provided on a folding door, and a pair of mounting plates project from the upper surface to a bearing arm by an axial pin. A slider and a receiving member that are rotatably supported and that can maintain the posture in a state where the pair of mounting plates are substantially flush with each other at the closed position of the folding door are provided. There is proposed an apparatus in which a member is pressed to move a folding door to a closed position side and a stopper is provided on a pair of mounting plates.

Further, the applicant of the present application has disclosed in Japanese Utility Model Publication No. 22608/1993 that one of the bearing arms is provided with an angle adjusting screw which projects obliquely from the abutment surface on the other mounting plate. ing.

[0004]

In the hinge for folding doors disclosed in Japanese Utility Model Publication No. 3-30541, since a pair of mounting plates are cast, the thickness of each part is increased in consideration of strength and safety. Had to design. For example, in addition to the flat plate, the mounting plate is provided with a reinforcing rib on the flat plate. In addition, a pair of guide walls are erected on one mounting plate and a contact surface is erected on the opposite side of the abutting surface, and then the tip of the contact surface is extended inward, and a pair of guide walls on the mounting plate and Since the spring and the slider are arranged in a space surrounded by the contact surface, the slider is arranged on the above-described thick mounting plate, so that the slider has to be further thickened.
In particular, in hinges for folding doors for furniture, the size of the folding door has been reduced, which is contrary to the current situation in which it is desired to reduce the size as much as possible.

Further, the slider is in a state in which the spring is held inside the distal end of the contact surface, but the side surface of the slider is only guided by a vertical wall, and only the distal end cam surface is provided with a shaft pin in its through hole. Has been penetrated and held, it has been found that a more reliable holding structure is necessary.

Further, the hinge for folding door of Japanese Utility Model Publication No. 5-2608 is cast as described above, and the angle adjusting screw is obliquely abutted against the other mounting plate. Cannot be immediately obtained.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has been made to increase the strength of a hinge formed by pressing a metal plate to make the hinge smaller and thinner, and to obtain a stable opening and closing operation. It is an object of the present invention to provide a hinge for folding doors.

[0008]

According to a first aspect of the present invention, there is provided a pair of mounting plates to be mounted on a folding door, and a pair of mounting plates protruding from the upper surfaces of the pair of mounting plates and rotatably supported by shaft pins. A bearing arm piece, a holder provided on the upper surface of one of the mounting plates, and a cam spring at the distal end slidably provided in the holder and pressed by the pressing spring in a state of holding the shaft pin toward the other mounting plate. And a receiving member provided on the upper surface of the other mounting plate and engaging with the cam surface at the tip of the slider, the pair of mounting plates are each press-formed from a metal plate. The end faces are abutted flush with each other, and the upper and lower ends of the abutting side of the pair of mounting plates are bent toward the upper surface,
The holder is notched so that the concave portion is located at the center of the abutting side of one of the mounting plates 1 from the side of the abutting side of the metal plate to the side of the opposite side of the abutting side, so that the abutting side is opened. The screw holding piece is cut and raised substantially vertically to the upper surface side to form a continuous opening, and the periphery away from the concave portion is raised to the upper surface side in a substantially U-shape in plan view, and the cutout end surface near the concave portion is formed. The receiving member is bent so as to face the center of the abutting side of the other mounting plate, and is bent so as to receive the pressing force of the cam surface at the tip of the slider. The receiving surface is formed to be bent toward the upper surface so as to abut against the angle adjusting screw provided on the angle adjusting screw holding piece on the end surface on the side.

According to the first aspect of the present invention, the pair of mounting plates are press-formed from the metal plate, and the bearing arm piece, the holder,
The bearing central arm piece, angle adjustment screw holding piece, receiving member and receiving surface are all erected. In addition, by extending the holder to the opposite side of the metal plate, the slide area of the slider is set large, a bearing central arm piece and an angle adjusting screw holding piece are additionally formed, and the rising of the concave portion is used as a reinforcing rib to make one of the reinforcing ribs. Increase the strength of the metal plate. Then, the end surface of the mounting plate is brought into contact with the end surface to maintain the flush state, and the angle of the pair of mounting plates is adjusted by the angle adjusting screw as needed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view showing an embodiment of the hinge for the folding door of the present invention, FIG. 2 is a cross-sectional view taken along the line AA of FIG.
3 is a sectional view taken along line BB of FIG. 1, and FIG. 4 is a sectional view taken along line CC of FIG.

In the drawings, reference numerals 1 and 2 denote a pair of mounting plates mounted on a folding door (not shown), 3 denotes shaft pins, 4 and 5 denote bearing arm pieces that are supported by the shaft pins 3, and 6 denotes one mounting plate 1. A holder provided on the upper surface, 7 is a slider slidably provided inside the holder 6, 8 is a pressing spring for pressing the slider 7, 9
Is a receiving member provided on the other mounting plate 2.

The pair of mounting plates 1 and 2 are each press-formed from a strong metal plate such as a steel plate. The metal plates 1 and 2 are substantially flush with each other when the end faces 11 and 12 are abutted, and the upper and lower ends on the abutting side in FIG. 1 are bent upward to form the bearing arm pieces 4 and 5. The bearing arms 4, 5 are erected substantially in the form of an isosceles triangle, and the top is pivotally supported by a shaft pin 3. Note that stress relief grooves 15 are provided in the metal plates 1 and 2 below the bearing arm pieces 4 and 5. In the figure, reference numeral 16 denotes a countersink hole in the seat surface portion.

Next, the holder 6 is cut out at the center of the one side of the metal plate 1 so that the recess 20 opens at the side of the abutment. More specifically, the recess 20 is cut out from the near side of the butting side of the metal plate 1 to the side of the opposite side of the butting.
0 is cut and raised to form a continuous opening. The peripheral portion away from the concave portion 20 is raised to the upper surface side, and the rising wall 21 is formed in a substantially U shape in plan view,
In the vicinity of the concave portion 20 following the rising wall 21, the cutout end face 22 is bent and formed so as to have a substantially U shape in plan view. The notch end face 22 is preferably positioned parallel to the metal plate 1 by the height of the rising wall 21. The bearing central arm 23 is erected on the upper surface side, and is supported by the shaft pin 3 at the center of the metal plate 1.

The slider 7 can be formed into a horizontally long shape as a whole by using a synthetic resin or the like as a raw material. A cam surface 30 and an insertion hole 31 for a shaft pin are provided at a front end, and a step portion 32 at a rear end is formed. Is provided with a holding hole 33 for a pressing spring. Guide grooves 34, 34 into which the notched end faces 22, 22 are fitted are formed on both side surfaces of the slider 7 from the rear end to the middle part. An escape portion 35 can be recessed on the upper surface of the slider 7. Therefore, the notch end faces 22, 22 are fitted into the guide grooves 34, 34, and the slider 7 is slidably held with the pressing spring 8 held by the pressing spring holding hole 33 and the recess 20.

The receiving member 9 has a cam surface 30 at the leading end of the slider 7 with the center of the abutting side of the other metal plate 2 cut and raised.
Is formed so as to be able to receive the pressing force. That is, the receiving member raises the base end piece 40 on the upper surface, and then sets the base end piece 40
The cam receiving surface is formed by vertically disposing the tip piece 41 obliquely. In the drawing, reference numeral 42 denotes a reinforcing projection provided on the base piece 40.

On one metal plate 1, an angle adjusting screw 53 is provided on the angle adjusting screw holding piece 50 described above. More specifically, the cut-and-raised piece 51 is erected at approximately 90 ° on the upper surface side, and the tip of the cut-and-raised piece 51 is further bent approximately 90 ° to the abutting side along the upper surface of the metal plate 1 to hold the angle adjusting screw. Piece 5
0, and the female screw hole 5 is formed in the angle adjusting screw holding piece 50.
2, the angle adjusting screw 53 is screwed. Therefore, the angle adjusting screw 53 is located close to the upper surface at the abutting end surface of the metal plate 1, and is preferably disposed substantially parallel to the upper surface. The other metal plate 2 is provided with a receiving surface 54 formed by bending an abutting end surface facing the angle adjusting screw 53 on the upper surface side.

At the time of manufacture, the pair of mounting plates 1 and 2 are press-molded into the above-described shape, and then the pressing spring 8 is mounted in the holding hole 33 for the pressing spring of the slider 7 and the recess 20 is inserted into the recess 20 through the slider. 7 is fitted. The slider 7 is held with the notched end faces 22, 22 engaged in the guide grooves 34, 34. With the slider 7 pressed against the spring force of the pressing spring 8, the shaft pins 3 are inserted with the bearing arm pieces 4 and 4 aligned. Both ends of the shaft pin 3 are crimped or the like while being inserted through the shaft pin insertion hole 31 of the slider 7 and the bearing central arm piece 23.

According to this embodiment, the metal plates 1 and 2 are bent toward the upper surface at the upper and lower ends on the abutting side, and the bearing arms 4 and 5 are erected. Since the rising wall 21 having a substantially U-shape in plan view, the bearing central arm piece 23 and the angle adjusting screw holding piece 50 are erected, and the base end piece 40 and the reinforcing protrusion 42 of the other metal plate 2 are erected. However, even a metal plate can exhibit sufficient strength as a hinge for a folding door, and the metal plate can be used as thin as possible.

[0019]

According to the present invention, a hinge for a folding door having both a flush holding structure and an angle adjusting mechanism thereof can be press-formed from a metal plate, and a bearing arm, a holder, a bearing central arm, an angle Since the adjusting screw holding piece, receiving member and receiving surface are all erected on the metal plate, even metal plates can exhibit sufficient strength as hinges for folding doors. It is possible to reduce the weight and size of the hinge press-formed from a metal plate. Further, by extending the holder from the near side of the abutting side of the metal plate to the side of the opposite side of the abutting side, the sliding area of the slider can be set large, and the strength of one of the metal plates can be increased by using the rising of the concave portion as a reinforcing rib. In addition, a bearing central arm piece and an angle adjusting screw holding piece can be added. Further, since the bearing arm piece and the bearing central arm piece are supported by the shaft pins, the strength of the hinge support structure can be increased, a reliable holding structure can be obtained, and the opening and closing of the hinge can be stabilized.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a hinge for a folding door according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

[Explanation of symbols]

 Reference numerals 1 and 2 Mounting plate (metal plate) 3 Shaft pin 4 and 5 Bearing arm 6 Holder 7 Slider 8 Press spring 9 Receiving member 11, 12 Butt end face 20 Depression 21 Rise wall 22 Notch end face 30 Cam face 31 Insertion for bearing pin Hole 32 Stepped portion 33 Holding hole for pressing spring 34 Guide groove 40 Base end piece 41 End piece 50 Angle adjusting screw holding piece 51 Cut and raised piece 52 Female screw hole 53 Angle adjusting screw 54 Receiving surface

──────────────────────────────────────────────────続 き Continued on the front page (56) References Japanese Utility Model 1-41587 (JP, U) Japanese Utility Model 2-1444979 (JP, U) Japanese Utility Model 3-1226987 (JP, U) Japanese Utility Model 3 30541 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E06B 3/48 E05D 9/00-11/10

Claims (1)

(57) [Claims] 1. A pair of mounting plates mounted on a folding door, a bearing arm protruding from the upper surface of the pair of mounting plates and rotatably supported by a shaft pin, and an upper surface of one of the mounting plates , A slider slidably provided in the holder, and a slider whose tip cam surface is pressed by the pressing spring while holding the shaft pin toward the other mounting plate, and an upper surface of the other mounting plate. And a receiving member engaged with a cam surface at the tip of the slider. The upper and lower ends of the abutting side of the pair of mounting plates are bent and formed on the upper surface side, and the holder has a recess at the center of the abutting side of one mounting plate from the near side of the abutting side of the metal plate to the near side of the abutting opposite side. Notched so that it opens, and the angle adjustment with the bearing central arm piece in front of the butting side The adjusting screw holding piece is cut and raised substantially vertically to the upper surface side to form a continuous opening, and the periphery separated from the concave portion is raised to the upper surface side in a substantially U-shape in plan view, and a notched end surface near the concave portion. Are bent so as to face each other, and the receiving member is bent at the center of the abutting side of the other mounting plate so as to be able to receive the pressing force of the cam surface of the slider. A hinge for a folding door, characterized in that a receiving surface is formed to be bent toward an upper surface side so as to contact an angle adjusting screw provided on the angle adjusting screw holding piece on an end surface of the hinge.