JPH10169301A - Gravity hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a pivot hinge type gravity hinge with a film stopper mechanism having excellent durability. SOLUTION: A self-closing mechanism 23 is installed to either one of an upper hinge 4 and a lower hinge 5 consisting of pivot hinges, and the gravity hinge is constituted. A stopper mechanism is mounted on either one of both hinges 4, 5. The stopper mechanism is composed of door bases 9 fixed onto the upper and lower end faces of a door 1 and restriction plates 14 installed so as to face the rotational loci of the door bases 9 and springs 15. One ends of the restriction plates 14 are fitted externally to pivot shafts 7, and the other ends are received by brackets 6 fixed onto a door frame 2 in an unturnable manner. When the door 1 is opened, the restriction plates 14 and moved together with the door 1 and sifted upwards, the door bases 9 are received by the restriction plates 14, and the opening of the door 1 is restricted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pivot hinge type gravity hinge having a stopper mechanism for regulating a door opening amount.

[0002]

2. Description of the Related Art A gravity hinge having a stopper mechanism is known from Japanese Utility Model Publication No. 3-2626, and a pivot hinge having a stopper mechanism is disclosed in Japanese Unexamined Utility Model Publication No.
It is known from JP-A-8082. In the former hinge, of the pair of upper and lower hinges, the upper hinge is configured as a gravity hinge, and the lower hinge is provided with a stopper mechanism. The stopper mechanism consists of a stopper screw screwed into the bearing cylinder of the hinge plate on the door side, and a step provided in the middle of the hinge shaft. When moving up with
The inner protruding end of the stopper screw is received by the upper step portion of the small diameter shaft portion, and further restricts the door from sliding upward, thereby defining the door opening limit.

In the latter hinge, a stopper mechanism is provided between a lower hinge shaft fixedly supported by the opening frame and a door-side regulating plate fitted to the hinge shaft. A hole externally fitted to the hinge shaft is provided in the restricting plate, and a restricting claw protrudes from an inner surface of the hole. In order to receive the restricting claw, a vertical groove is provided along the axis on the peripheral surface of the hinge shaft, and the restricting groove along the peripheral surface of the hinge shaft is formed in a branched shape from an intermediate portion of the vertical groove.
The restricting claw is received and contacted at the circumferential end of the restricting groove, thereby restricting the opening amount of the door.

[0004]

Since the stopper mechanism of the former hinge regulates the upward sliding of the bearing tube of the door side hinge and indirectly regulates the door opening amount, the stopper mechanism and the vertical movement of the stepped portion are reduced. Due to slight variations in position,
The door opening limit position tends to vary. For example, if a person leans on the door at the open limit position,
Although a large rotational moment acts on the hinge, all of these excessive moments are concentrated on the stopper screw, so that the stopper screw is easily damaged, and the open limit position is gradually expanded during long-term use.

[0005] The latter pivot hinge is superior to the former hinge in that the structure is simple. However, the weight of the door and the moment of opening and closing are concentrated on the regulating claw.Therefore, there is a concern that the regulating claw may be worn during long-term use, or may be deformed during sudden opening / closing. Is done.

SUMMARY OF THE INVENTION An object of the present invention is to provide a gravity mechanism having a strong and durable stopper mechanism which can sufficiently withstand a large rotating moment and does not cause abrasion or deformation during long-term use. It is to provide a hinge.

[0007]

A gravity hinge according to the present invention is a self-closing mechanism in which one of the upper hinge 4 and the lower hinge 5 supporting the upper and lower end surfaces of the door 1 has inclined cams 24 and 25 as mechanical elements. 23 are provided. An upper hinge 4 and a lower hinge 5 are each provided with a bracket 6 fixed to the door frame 2.
And a vertical pivot shaft 7 fixedly supported by a bracket 6
And a door base 9 fixed to the upper and lower end surfaces of the door 1 and rotatably supported by a pivot shaft 7. Upper hinge 4
A stopper mechanism for defining an opening limit of the door 1 is provided on at least one of the lower hinge 5 and the lower hinge 5. The stopper mechanism includes a door base 9 and a regulating plate 14 disposed between the pivot shaft 7 and the bracket 6 facing the rotation locus of the door base 9. The regulating plate 14 has a pivot shaft 7 at one end.
, And the other end thereof is abutted and held non-rotatably about the pivot shaft 7, and can move up and down along with the door 1. A receiving surface 30 that receives the contact surfaces 31 on the front and rear end surfaces of the door base 9 and prevents the opening rotation of the door 1 is provided on the regulating plate 14 adjacent to the door base 9.

More specifically, the end of the regulating plate 14 on the pivot shaft side is held between the door base 9 and the door 1 so as to be rotatable relative to the door 1. One end of the restricting plate 14 is vertically slidably fitted on the pivot shaft 7, and the restricting plate 14 is provided between the restricting plate 14 and the shaft support wall 6 a of the bracket 6.
Is disposed toward the door base 9.

A vertical guide groove 10 is formed in the mounting wall 6b of the bracket 6, and a slide claw 19 that engages with the guide groove 10 is provided on a surface of the regulating plate 14 that contacts the mounting wall 6b. The self-closing mechanism 23 includes a pair of upper and lower inclined cams 24 and 25 externally fitted to the pivot shaft 7, and a holding cylinder 26 externally fitted to both the inclined cams 24 and 25. The lower slope cam 24 is fixed to the bracket 6, and the upper slope cam 25 is a holding cylinder 26.
To the door base 9 via

[0010]

In most cases, the door 1 is held in the closed position by the weight of the door itself acting on the self-closing mechanism 23.
When the door 1 is opened from this state, the door base 9 fixed to the door 1 rotates together with the door. However, door base 9
The regulating plate 14 provided facing the rotation locus of the
Therefore, even if the door 1 rotates, the initial state is maintained. Therefore, when the door 1 is opened by a predetermined amount, the contact surface 31 of the door base 9 comes into contact with the receiving surface 30 provided on the regulating plate 14 as shown in FIG. Regulate what you do.

As described above, according to the stopper mechanism for directly receiving the door base 9 integrated with the door 1 on the receiving surface 30 of the receiving plate 16 of the regulating plate 14, the variation in the opening limit position of the door 1 can be suppressed. , Door base 9 and regulating plate 1
Since the contact area of No. 4 can be sufficiently ensured, the contact portion is not deformed even when a large turning moment or impact force acts. Since all of the door weight is borne by the self-closing mechanism 23, the regulating plate 14 and the door base 9 do not wear when the door is opened and closed. Since the stopper mechanism is configured using the door base 9, the number of parts can be reduced.

The door 1 supported by the upper and lower hinges 4 and 5 including the self-closing mechanism 23 moves up and down by the amount of inclination of the slope cams 24 and 25 when opening and closing. At this time, in order to move the regulating plate 14 up and down along with the door 1, one end thereof is sandwiched and held between the door base 9 and the door 1, or the regulating plate 14 is pressed toward the door base 9 by a spring 15. Energize. Such a regulating plate 14 can be reduced in thickness. Regulation plate 1
4 receives an external force when the door is opened and closed, and tends to rotate around the pivot shaft 7. Depending on the variation in the finished dimensions, the entire regulating plate 14 rotates around the pivot shaft 7,
There is a possibility that it will bite between the pivot shaft 7 and the bracket 6. In order to surely prevent such rotation of the regulating plate 14,
The slide claw 19 is received by the guide groove 10 received by the bracket 6.

[0013]

【Example】

(Embodiment 1) FIGS. 1 to 5 show Embodiment 1 of a gravity hinge according to the present invention. FIG. 2 shows a state in which a gravity hinge is applied to a toilet door, and reference numeral 1 denotes a door,
2 is a door frame and 3 is a door knob. The door 1 is supported by an upper hinge 4 and a lower hinge 5 so as to be openable and closable on one side. A self-closing mechanism 23 to be described later is incorporated in the lower hinge 5, whereby the door 1 can swing back from an arbitrary open position to a closed position, and can always maintain a closed state.

3 and 4, an upper hinge 4 and a lower hinge 5 respectively include a bracket 6 fixed to the door frame 2 and a vertical pivot shaft 7 supported by the bracket 6.
And a door base 9 fixed to the upper and lower end surfaces of the door 1 and a stopper mechanism.

The bracket 6 of the upper hinge 4 is formed of a stainless steel plate press fitting obtained by bending a horizontal shaft supporting wall 6a and a vertical mounting wall 6b at a right angle.
The pivot shaft 7 is caulked and fixed near the end of the a. Several screw insertion holes are provided in the mounting wall 6b, and a vertically long guide groove 10 is provided in the center of the upper end of the mounting wall 6b. Lower hinge 5
Is formed basically vertically symmetrically with the bracket 6 for the upper hinge 4, except that the diameter of the pivot shaft 7 is set smaller than the pivot shaft 7 of the upper hinge 4. .

The door base 9 is made of a band-shaped metal stamped from a stainless steel plate, and has a bearing hole 11 provided on one side of the plate surface and a plurality of screw insertion holes provided on the other side. A flank 12 rounded concentrically with the bearing hole 11 is formed at the end on the side of the bearing hole 11. The front and rear end surfaces of the door base 9 that are continuous with the flank 12 serve as the contact surfaces 31. This will be described later. In the upper hinge 4, the door base 9 is screwed and fixed to the upper end surface of the door 1 in a state where the bearing hole 11 matches the mounting hole 13 dug in the upper end surface of the door 1.

The stopper mechanism comprises a door base 9, a regulating plate 14 disposed between the pivot shaft 7 and the bracket 6 so as to face the rotation locus of the door base 9, and a spring 15. The regulating plate 14 is provided on one surface of the rectangular receiving plate 16.
7 is formed by welding. The receiving plate 16 is made of a stainless steel plate having the same thickness as the door base 9, has a rectangular sliding claw 19 protruding at the front and rear center of one side edge thereof, and an escape recess 20 formed of a partial arc surface at the front and rear center of the other side edge. To form The side end face sandwiching the escape recess 20 serves as a receiving face 30 for receiving the door base 9. The holding plate 17 is formed by punching a thin stainless steel plate into a tongue-like shape, and has a hole 21 that is fitted to the pivot shaft 7 through a plate surface that is rounded in a semicircular shape.

After the slide claw 19 provided on the receiving plate 16 is inserted into and engaged with the guide groove 10, the holding plate 17 and the bearing wall 6a are engaged.
The regulating plate 14 is integrated with the bracket 6 by caulking and fixing the pivot shaft 7 passing through the hole 21 and the spring 15 to the shaft support wall 6a. Spring 1
Reference numeral 5 denotes a spiral coil type compression spring, which urges the holding plate 17 to move toward the door base 9.

The self-closing mechanism 23 comprises a pair of upper and lower inclined cams 24 and 25 which are externally fitted to the pivot shaft 7 of the lower hinge 5, and a holding cylinder 26 which is externally fitted to both the cams 24 and 25. The lower sloped cam 24 is fixed to the pivot wall 6a of the bracket 6 so as not to rotate, and the upper sloped cam 25 is fixed to the holding cylinder 26 so as not to rotate. The holding cylinder 26 is welded to the door base 9. Door 1
Is closed, the upper and lower inclined cams 24 and 25 are surface-joined between the cam surfaces 27 (see FIG. 3). When the door 1 is opened from this state, the upper sloped cam 25 is opened.
Is lifted along the lower sloped cam 24 while rotating around the pivot shaft 7. Thereafter, when the hand is released from the door 1, the door 1 is automatically returned to the closed position and oscillated by the action of the component force of the reaction force received from the lower sloped cam 24.

In the lower hinge 5 as well, the regulating plate 14 is integrated with the bracket 6 in advance, similarly to the upper hinge 4. However, in this case, since the inclined cam 24 is fixed to the door base 9 in a state of being fitted to the pivot shaft 7, the holding plate 1
7 is externally fitted to the cylinder outer surface of the inclined cam 24. Incidentally, the outer diameter of the inclined cam 24 and the diameter of the upper pivot shaft 7 coincide with each other. The door base 9 on the side of the lower hinge 5 has an attachment hole 1 formed in the holding cylinder 26 of the door 1.
3 and screw-fixed to the lower end surface of the door.

As shown in FIG. 5, when the door 1 is opened from the closed position, the door base 9 rotates together with the door 1, and at the same time, the door 1 and the door base 9 slide upward. At this time, the regulating plate 14 also slides upward along with the door base 9, but does not rotate. Therefore, as shown in FIG. 1, one contact surface 31 of the door base 9 contacts the receiving surface 30 of the regulating plate 14, and prevents the door 1 from swinging further. Thus, the door base 9 fixed to the door 1
Is directly received by the regulating plate 14 provided facing the rotation locus, and the stopper mechanism that regulates the opening amount of the door can accurately define the opening limit of the door 1 and process the regulating plate 14 and the door base 9. The variation in the open limit position due to the variation in the distance can be sufficiently suppressed.

In a state where the door base 9 is received by the regulating plate 14, the respective receiving surfaces 30 and the contact surfaces 31 are brought into surface contact with each other, so that the load can be dispersed. Therefore, 90
In the case where a large rotational moment in the opening direction acts on the door 1 in the fully opened position, or the door base 9 collides violently with the regulating plate 14, the receiving plate 16 and the door base 9 are not deformed. Providing a stopper mechanism on each of the upper and lower hinges 4 and 5 also helps to reduce external load. Since the door load is borne by the self-closing mechanism 23, the receiving plate 16 does not wear when the door is opened and closed. Since the spring 15 is formed by a helical coil spring, when the door 1 is closed, the spring 15 of the lower hinge 5 is crushed into a spiral spring as shown in FIG. Similarly, in a state where the door 1 is opened by 90 degrees, as shown in FIG.
Is crushed in a spiral spring shape. Therefore, the vertical gap between the door 1 and the bracket 6 can be made smaller.

(Embodiment 2) FIG. 6 shows an embodiment 2 in which the assembly form of the regulating plate 14 is changed. There, the door base 9 is fastened and fixed with screws via a spacer 33, and the regulating plate 1, which is turned upside down, is placed in the gap between the door base 9 and the door 1.
4 and held. The thickness of the spacer 33 is set equal to or slightly larger than the thickness of the holding plate 17. According to such an assembling mode, the regulating plate 14 moves up and down along with the elevating operation of the door 1, so that the spring 15 can be omitted. Other components are the same as those of the first embodiment, and therefore, the same members are denoted by the same reference numerals and description thereof will be omitted.

(Embodiment 3) FIG. 7 shows an embodiment 3 in which a part of the regulating plate 14 is changed. There, the slide claw 19 of the receiving plate 16 and the guide groove 1 of the bracket 6 in the first embodiment are provided.
0 is omitted, and the side end surface of the receiving plate 16 is brought into contact with the mounting wall 6b of the bracket 6 so as to prevent rotation. Otherwise, the configuration was the same as in Example 1.

The self-closing mechanism 23 may be incorporated in the upper hinge 4. The stopper mechanism can be provided only on one of the upper and lower hinges 4 and 5. The spring 15 can be replaced by a compression coil spring. The opening limit angle of the door 1 can be set to any angle other than 90 degrees depending on the application. Door 1
When used in a normally open state, the open limit is read as the closed limit. The hole 21 of the holding plate 17 can be changed to a semicircular or arcuate notch, and may be formed as a V-shaped or trapezoidal notch.

[0026]

According to the present invention, since the door base 9 fixed to the door 1 is directly received by the regulating plate 14 disposed between the pivot shaft 7 and the bracket 6, the opening limit of the door 1 is defined. A stopper mechanism that can withstand strong impacts and large rotating moments compared to the stopper mechanism of is obtained.It eliminates wear and deformation during long-term use, and is strong and durable. A gravity hinge with a stopper, which can be applied to a heavy door without any problem, is obtained. Since the stopper mechanism is constituted by the door base 9 constituting the hinge and the regulating plate 14 and the like, the number of components of the hinge can be reduced, and the hinge cost per door can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA in FIG.

FIG. 2 is a perspective view showing an example of using a gravity hinge.

FIG. 3 is a vertical sectional front view of an upper hinge and a lower hinge.

FIG. 4 is an exploded perspective view of an upper hinge and a lower hinge.

FIG. 5 is a vertical sectional front view of an upper hinge and a lower hinge with a door opened.

FIG. 6 is a front view of a stopper mechanism according to a second embodiment.

FIG. 7 is a perspective view of a stopper mechanism according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Door frame 4 Upper hinge 5 Lower hinge 6 Bracket 7 Pivot shaft 9 Door base 14 Restriction plate 23 Self-closing mechanism 24/25 Slope cam

Claims (5)

[Claims] An upper hinge for supporting upper and lower end surfaces of a door.
And one of the lower hinge 5 and the slope cam 24.
5 is a gravity hinge provided with a self-closing mechanism 23 having a mechanical element 5, wherein the upper hinge 4 and the lower hinge 5 are respectively a bracket 6 fixed to the door frame 2 and a vertical hinge fixed to and supported by the bracket 6. A pivot shaft 7 and a door base 9 fixed to the upper and lower ends of the door 1 and rotatably supported by the pivot shaft 7. At least one of the upper hinge 4 and the lower hinge 5 includes:
A stopper mechanism for defining an opening limit of the door 1 is provided. The stopper mechanism includes a door base 9 and a regulating plate 14 disposed between the pivot shaft 7 and the bracket 6 so as to face the rotation locus of the door base 9. The regulating plate 14 has one end positioned and held by the pivot shaft 7, and the other end contacted and held non-rotatably about the pivot shaft 7, and can move up and down along with the door 1, and can move up and down. 9 is a gravity hinge provided with a receiving surface 30 for receiving the contact surface 31 of the front and rear end surfaces of the front and rear surfaces 9 and preventing the opening rotation of the door 1 at a position adjacent to the door base 9 of the regulating plate 14. 2. The door according to claim 1, wherein an end of the regulating plate on the pivot shaft side is held between the door base and the door so as to be rotatable relative to the door. Gravity hinge. 3. One end of the regulating plate 14 is fitted to the pivot shaft 7 so as to be vertically slidable. The regulating plate 14 faces the door base 9 between the regulating plate 14 and the shaft support wall 6a of the bracket 6. The gravity hinge according to claim 1, wherein a spring (15) for pressing and biasing is disposed. 4. A vertical guide groove (10) is formed in a mounting wall (6b) of a bracket (6).
a slide claw 1 engaging with the guide groove 10
The gravity hinge according to claim 1, 2 or 3, wherein 9 is provided. 5. A self-closing mechanism 23 comprising a pair of upper and lower sloped cams 24, 25 fitted to the pivot shaft 7, and a pair of upper and lower sloped cams 24, 25.
The lower sloped cam (24) is fixed to the bracket (6), and the upper sloped cam (25) is fixed to the door base (9) via the holding cylinder (26). Or the gravity hinge according to 3 or 4.