HK1148799B

HK1148799B - Hinge for automatically closing door which opens in both directions and structure for door which opening in both directions

Info

Publication number: HK1148799B
Application number: HK11102993.0A
Authority: HK
Inventors: 佐波和
Original assignee: 佐波有限公司
Priority date: 2008-02-05
Filing date: 2009-01-28
Publication date: 2014-07-04

Description

Automatic door closing hinge for two-way door opening and two-way door opening door structure

Technical Field

The present invention relates to an automatic door closing hinge for a two-way door opening having a buffering function and a two-way door structure having the automatic door closing hinge for a two-way door opening.

Background

Conventionally, there is known an automatic door closing hinge with a buffering function for automatically rotating an opened door in a closing direction by a restoring force of a coil spring and for buffering an impact at the time of closing the door by a hydraulic cylinder. In recent years, an automatic door closing hinge that performs cushioning by an air damper has been proposed instead of a hydraulic cylinder. For example, patent document 1 (japanese patent application laid-open No. 2002-303072) and patent document 2 (japanese patent application laid-open No. 2005-113682) disclose an automatic door closing hinge using an air damper, in which a piston is housed and arranged in a cylinder provided in one of a pair of vane plates, an operating rod fixed to the upper portion of the other vane plate is arranged in the cylinder, a ball rollably arranged at a predetermined position of the piston and protruding at the inner periphery is engaged with a cam groove having a slope portion formed on the lower outer periphery of the operating rod, the piston is advanced and retreated in accordance with the movement of the ball with respect to the slope portion of the cam groove, and the impact is buffered by an air cushion action in the cylinder generated by the return action of the piston at the time of closing the door.

However, the automatic door closing hinge that buffers the impact of closing the door by hydraulic pressure or air pressure is a hinge for a door that is opened in one direction, which is an outward opening type or an inward opening type, and cannot be installed in a door that is opened in both directions, which is opened inward and outward. Therefore, there is a demand for an automatic door closing hinge with a cushion function that can be installed in a door that is opened in both directions.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide an automatic door closing hinge for a two-way door opening with a cushion function that can be installed in a two-way door opening type door that opens inward and outward, and a door structure for a two-way door opening having the automatic door closing hinge.

The automatic door closing hinge for a two-way door of the present invention is characterized by comprising: a cylinder; an operating lever rotatably attached to one end of the cylinder so that movement in the longitudinal direction is restricted; two substantially V-shaped grooves provided in opposition to the outer peripheral surface of the operating rod in the cylinder; two balls arranged to engage with the substantially V-shaped groove and to face each other; a piston that engages with the ball, and moves in the longitudinal direction in the cylinder in conjunction with movement of the ball relative to the substantially V-shaped groove; a compression coil spring disposed between the piston and an upper end portion of the cylinder, and urging the piston toward the other end side of the cylinder; and a fluid pressure damper mechanism that damps movement of the piston toward the other end side by hydraulic pressure.

In the automatic door closing hinge for a two-way door opening according to the present invention, the substantially V-shaped groove is formed continuously in a circumferential shape.

In the automatic door closing hinge for a two-way door according to the present invention, the fluid pressure buffering mechanism may be configured such that the other piston is provided below the piston by constituting another piston by a bottom plate and a shaft portion, the shaft portion of the other piston being fixed to a bottom portion of the piston, a partition having a flow path is provided between the bottom portion of the piston and the bottom portion of the other piston, a choke of the flow path of the partition when a fluid flows from the first fluid chamber to the second fluid chamber is smaller than a choke of the flow path of the partition when a fluid flows from the second fluid chamber to the first fluid chamber, with a space between the bottom portion of the piston and the partition being a first fluid chamber, and a space between the partition and the bottom portion of the other piston being a second fluid chamber.

In the automatic door closing hinge for a two-way door opening according to the present invention, an air hole is provided in a bottom portion of the cylinder, an air reservoir is formed between the bottom portion of the other piston and the bottom portion of the cylinder in response to the rise of the other piston, and the air reservoir disappears in response to the fall of the other piston.

In the automatic door closing hinge for a two-way door opening according to the present invention, the fluid pressure damper is a hydraulic damper for damping the movement of the piston toward the other end side by hydraulic pressure. By forming the hydraulic cushion mechanism, a more smooth cushion operation can be performed. Instead of the oil, other viscous liquid or the like may be used.

In the automatic door closing hinge for a two-way door opening according to the present invention, the fluid pressure damper is an air pressure damper for damping the movement of the piston toward the other end side by air pressure. By forming the air pressure buffer structure, oil leakage and the like generated when oil is used can be prevented.

The automatic door closing hinge for a two-way door according to the present invention is a door structure for a two-way door that can be opened and closed inward and outward, and is characterized in that the automatic door closing hinge for a two-way door according to the present invention is provided at a door support portion or a door, and a support hinge attached to the automatic door closing hinge for a two-way door is provided at the door or the door support portion. The door support portion is, for example, a column, a door frame, or other suitable member.

In the invention disclosed in the present specification, in addition to the structures of the respective inventions and the respective embodiments, a structure in which a part of the structure is changed to another structure than that disclosed in the present specification and is specified, a structure in which another structure than that disclosed in the present specification is added to the above structures and is specified, or a structure in which the part of the structure is deleted within a limit that a part of the operational effect can be obtained and is specified and conceptually included in the present invention.

In the present invention, when the door is opened inward, the ball moves relative to one inclined portion of the substantially V-shaped groove, and when the door is opened outward, the ball moves relative to the other inclined portion of the substantially V-shaped groove, whereby the bidirectional opening door that can be opened and closed inward and outward can be automatically closed by the helical compression spring, and the closing operation of the bidirectional opening door can be buffered by the oil pressure or the air pressure. Further, since the structure is simple, the structure can be easily manufactured at low cost, and the size and the installation space can be reduced. Further, by the structure in which the ball is engaged with the substantially V-shaped groove, the inclination and pitch of the substantially V-shaped groove can be freely set, and the opening/closing state of the bidirectional opening door such as the opening degree of the bidirectional opening door can be freely adapted. Further, the structure in which the ball moves along the substantially V-shaped groove allows the ball to smoothly move with a small frictional resistance, and the piston to smoothly move, thereby smoothing the opening and closing operation of the two-way opening door.

Further, the substantially V-shaped groove is formed continuously in a circumferential shape, whereby the manufacturing process can be simplified.

Further, by fixing the other piston to the piston, and forming the first and second fluid chambers by the piston, the other piston, and the partition wall, and forming the fluid pressure damper mechanism by causing the fluid to flow back and forth between the first and second fluid chambers, the damper mechanism can be obtained simply and at low cost in conjunction with the forward and backward movement of the piston. Further, with the above configuration, impact buffering with excellent stability can be performed.

Further, in the above-described configuration, the air reservoir is formed between the bottom of the other piston and the bottom of the cylinder in response to the rise of the other piston, and the air reservoir disappears in response to the fall of the other piston, whereby the impact can be absorbed by the fluid pressure, and the door closing operation can be absorbed by the air cushion action.

Drawings

Fig. 1 is a partially longitudinal sectional explanatory view showing a state of the automatic door-closing hinge for a two-way door opening according to the embodiment in response to closing of a door.

Fig. 2 is a partially longitudinal sectional explanatory view showing a state of the automatic door closing hinge for a two-way opening door in fig. 1 corresponding to the time of opening the door.

Fig. 3 is a partial front view showing a structure of a double-opening door having the automatic door-closing hinge for a double-opening door of fig. 1.

Detailed Description

Embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the automatic door closing hinge 1 for a two-way opening door of the present embodiment includes: a cylinder 2; an operating rod 3 rotatably attached to the cylinder 2, and a part of the operating rod 3 protrudes outward from an upper end side of the cylinder 2; a compression coil spring 4 internally disposed in the cylinder 2 and arranged on the outer periphery of the operating rod 3; an upper piston 5 internally disposed in the cylinder 2 and arranged on the outer periphery of the operation rod 3; and a lower piston 6 built in the cylinder 2 and installed at a lower side of the upper piston 5.

The cylinder 2 has a substantially cylindrical hollow portion 21, and a groove 22 is formed in the front and rear positions of the inner surface thereof in the vertical direction. A rectangular mounting plate 23 is integrally formed on the rear surface side of the cylinder 2 so as to protrude to the left and right sides, and the cylinder 2 can be mounted to a column, a door frame, or the like by inserting a countersunk screw or the like into a mounting hole 24 of the mounting plate 23. An upper cap 25 is fixed to an upper end of the cylinder 2 by a countersunk screw 252, and a through-insertion hole 251 through which the operation rod 3 is inserted is formed in the center of the upper cap 25. The lower cap 26 is fixed to the lower end of the cylinder 2 by a mounting pin 262, and an air hole 261 is formed in the center of the lower cap 26.

The operation lever 3 has a substantially upper small diameter portion 31 and a large diameter portion 32. A mounting hole 311 having a hexagonal shape in plan view is formed at the upper end of the small diameter portion 31, a protrusion 313 is provided at the substantial center of the small diameter portion 31, a mounting pin 312 penetrates the protrusion 313 in the left and right directions, and a clearance fit ring 314 for absorbing impact is provided on the outer periphery of the small diameter portion 31 in the circumferential direction so as to be freely rotatable below the protrusion 313. The small diameter portion 31 is inserted into a through-insertion hole 251 of the upper cap 25 fixed to the upper end of the hollow portion 21, and a clearance fit ring 314 pressed from above by the protruding portion 313 abuts on the upper surface of the upper cap 25. In this state, the upper end surface of the large diameter portion 32 is disposed close to the lower surface of the upper cap 25, and the clearance fit ring 314 is engaged with the upper end surface of the large diameter portion 32 on the upper and lower surfaces of the upper cap 25, thereby restricting the movement of the operating lever 3 in the vertical direction.

Two substantially V-shaped cam grooves 33 provided at opposing positions are formed continuously in a circumferential shape on the outer peripheral surface of a substantially lower portion of the large diameter portion 32. In the state corresponding to the door closing time in fig. 1, the cam groove 33 having a substantially V-shape has an upper end at a front center position, is formed obliquely downward along the outer peripheral surface from the front center position to the left and right, and has a lower end at a side center position which is 90 degrees to the left and right from the front center position. Further, the cam groove 33 is formed obliquely upward along the outer peripheral surface from the side surface center position to the back surface center position which becomes the lower end, and becomes the upper end at the back surface center position, and the upper end and the lower end of the cam groove are formed at corresponding positions. That is, the cam groove 33 is substantially inverted V-shaped when viewed from the front and the back in a state corresponding to door closing, and V-shaped when viewed from the side, and vice versa in a state corresponding to door opening.

The upper piston 5 has a substantially bottomed cylindrical shape having a bottom plate 51 and a peripheral wall 52. A mounting hole 511 is formed in the center of the lower surface of the bottom plate 51 so as not to penetrate therethrough, the mounting hole 511 being used for fixing a shaft portion 62 of the lower piston 6 described later, and a female screw, for example, is formed in the mounting hole 511 and is screwed and fixed to a male screw formed in the shaft portion 62. An oil seal 57 as a sealing portion is continuously formed in the circumferential direction on the outer circumferential surface of the base plate 51, thereby preventing oil from flowing out to the upper side of the oil seal 57. The peripheral wall 52 is provided with pins 53 protruding outward at respective central positions on the front and rear surfaces in fig. 1 and 2, and the pins 53 engage with the concave grooves 22 on the inner surface of the cylinder 2. The pin 53 moves up and down while engaging with the concave groove 22, so that the upper piston 5 can move up and down without rotation.

Further, on the inner peripheral surface of the peripheral wall 52, spherical concave portions 54 having a substantially hemispherical shape are formed at the center positions on the left and right side surfaces in fig. 1, respectively, and two balls 55 that engage with the spherical concave portions 54 and the cam grooves 33 of the operation lever 3, respectively, are arranged so as to be rollable. By the engagement of the ball 55 with the upper piston 5 which cannot rotate, the ball 55 is always positioned at the center of the left and right side surfaces in fig. 1 even when the operation lever 3 rotates. When the operation lever 3 is rotated by an external force from the state shown in fig. 1 to fig. 2, the ball 55 rolls along the inclination of the cam groove 33, moves from the lower end to the upper end of the cam groove 33 with respect to the cam groove 33, and the upper piston 5 moves upward. In addition, a portion of the peripheral wall 52 where the inner peripheral surface of the upper piston 5 and the upper end surface are joined is cut out in an L-shape in a circumferential manner, so that a recess 56 having a height lower than the upper end surface is formed.

The compression coil spring 4 is circumferentially provided on the outer periphery of the large diameter portion 32 of the operating rod 3, the lower end of the compression coil spring 4 is placed on the lower surface of the recess 56 of the upper piston 5, and the upper end of the compression coil spring 4 abuts against the lower surface of the upper cap 25. When the upper piston 5 is raised by rotating the operation lever 3 by an external force, the compression coil spring 4 is compressed by the raising of the concave portion 56, and when the external force is removed, the upper piston 5 in which the concave portion 56 is biased downward by the return extension of the compression coil spring 4 is lowered, the ball 55 moves from the upper end to the lower end of the substantially V-shaped cam groove 33 with respect to the cam groove 33, and the operation lever 3 is rotated from the state of fig. 2 to fig. 1.

The lower piston 6 has a substantially pin shape having a bottom plate 61 and a shaft 62 formed to protrude upward from the center of the bottom plate 61. On the outer peripheral surface of the base plate 61, an oil seal 63 as a sealing portion is continuously formed in the circumferential direction, so that oil is prevented from flowing out to the lower side of the oil seal 63. The end of the shaft 62 is inserted into and fixed to a mounting hole 511 of the upper piston 5, for example, by screwing the shaft 62 to the mounting hole 511. Further, between the lower surface of the bottom plate 61 of the lower piston 6 and the lower cap 26, when the lower piston 6 is raised, the air reservoir 9 is formed by sucking air from the air hole 261 of the lower cap 26.

A partition wall 27 is provided between the bottom plate 51 of the upper piston 5 and the bottom plate 61 of the lower piston 6. A first fluid chamber 7 is formed between the bottom plate 51 of the upper piston 5 and the partition wall 27, a second fluid chamber 8 is formed between the partition wall 27 and the bottom plate 61 of the lower piston 6, and oil is filled in each of the first fluid chamber 7 and the second fluid chamber 8. In addition, the partition wall 27 is formed with a flow path 28a provided with the seat valve 281 and a flow path 28b provided with the flow path adjustment pin 282. A part of the seat valve 281 is fixed to the upper surface of the partition wall 27 at a position near the periphery of the flow path 28a, and the portion of the seat valve 281 not fixed to the flow of the oil from the second fluid chamber 8 to the first fluid chamber 7 is lifted up and the oil flows into the first fluid chamber 7, and the seat valve 281 closes the upper opening of the flow path 28a to shut off the flow of the oil from the first fluid chamber 7 to the second fluid chamber 8. The flow path adjustment pin 282 is inserted in a direction perpendicular to the longitudinal direction of the flow path 28b so as to close the flow path 28b, and the flow path adjustment pin 282 has a through hole formed at a portion corresponding to the flow path 28 b. The amount of oil flowing through the flow path 28b can be adjusted by adjusting the direction of penetration of the through-holes from the direction along the flow path 28b to the direction perpendicular to the flow path 28 b.

As shown in fig. 3, for example, the automatic door-closing hinge 1 for two-way opening is attached to the column 101 by inserting a countersunk screw or the like into the attachment hole 24 along the side surface of the column 101 in the attachment plate 23 of the cylinder 2. The support hinge 10 is attached to the upper right corner of the door 102 by inserting a countersunk screw into the louver board 12 and the door 102, for example, and fixing. A hexagonal projection 14 in plan view is formed at the upper end of a mounting hole 13 formed in the lower surface of the base 11 of the support hinge 10 so as to project downward, the upper end of the operation lever 3 is inserted into the mounting hole 12, and the support hinge 10 is fixed and mounted to the operation lever 3 by fitting the projection 14 to a mounting hole 311 at the upper end of the operation lever 3. In the lower right corner of the door 102 and the corresponding portion of the column 101, the support hinge 10 and the automatic door-closing hinge 1 for a two-way door opening may be provided in the same manner, or a hinge for a two-way door opening that is normally opened inward and outward may be provided.

In the closed state of fig. 3, the automatic door-closing hinge 1 for a two-way door opening is in the state shown in fig. 1. When the door 102 is opened, the operating lever 3 rotates, the ball 55 rolls and moves from the lower end to the substantially upper end of the substantially V-shaped cam groove 33, the upper piston 5 rises, the compression coil spring 4 is compressed, and the lower piston 6 rises in accordance with the rise of the upper piston 5, and the door is opened as shown in fig. 2. In the raising of the pistons 5 and 6, the volume of the first fluid chamber 7 is expanded and the pressure in the first fluid chamber 7 is reduced by the raising of the upper piston 5, and the volume of the second fluid chamber 8 is reduced and the pressure in the second fluid chamber 8 is increased by the raising of the lower piston 6, so that the oil in the second fluid chamber 8 flows into the first fluid chamber 7 through the flow paths 28a and 28 b. Regarding the inflow, in the flow path 28a having the seat valve 281, the oil flows in by lifting up the seat valve 281, and in the flow path 28b having the flow path adjustment pin 282, the oil flows in through the gap slightly opened by the flow path adjustment pin 282. Further, the air flows into the cylinder 2 from the air hole 261 by the rise of the lower piston 6, and the air reservoir 9 is formed between the bottom of the lower piston 6 and the lower cap 26.

When the hand is separated from the door 102 and the external force is removed, the compression coil spring 4 is restored and extended, the upper piston 5 is lowered, the ball 55 rolls and is transferred from the substantially end to the lower end of the substantially V-shaped cam groove 33, and the operation lever 3 is rotated, thereby reaching the door-closed state of fig. 1 from the door-opened state of fig. 2. In the door closing operation, the lower piston 6 is also lowered as the upper piston 5 is lowered, the volume of the first fluid chamber 7 is reduced by the lowering of the upper piston 5, the first fluid chamber 7 is pressurized, the volume of the second fluid chamber 8 is expanded by the lowering of the lower piston 6, the second fluid chamber 8 is depressurized, the oil in the first fluid chamber 7 flows into the second fluid chamber 8 through the flow passage 28b, and the flow passage 28a having the seat valve 281 is closed by the seat valve 281 being pressed against the partition 27 around the flow passage 28a, so that the oil flows into the flow passage 28b having the flow passage adjusting pin 282 through the gap slightly opened by the flow passage adjusting pin 282.

That is, the choke (bottleneck) of the flow path of the partition wall 27 when the oil flows from the second fluid chamber 8 to the first fluid chamber 7 is the opening amount of the seat valve 281 of the flow path 28a and the opening amount of the flow path 28b by the flow path adjustment pin 282, the choke (bottleneck) of the flow path of the partition wall 27 when the oil flows from the first fluid chamber 7 to the second fluid chamber 8 is the opening amount of the flow path adjustment pin 282 of the flow path 28b, and the choke (bottleneck) of the flow path 28b of the partition wall 27 when the oil flows from the first fluid chamber 7 to the second fluid chamber 8 is smaller than the choke (bottleneck) of the flow paths 28a and 28b of the partition wall 27 when the fluid flows from the second fluid chamber 8 to the first fluid chamber 7. Therefore, the flow of oil becomes slow, and the impact of the door closing motion is buffered. Further, the air in the cylinder 2 flows out through the air hole 261 by the lowering of the lower piston 6, and the air reservoir 9 disappears. Even if air flows out of the small air holes 261, an air cushion function is exerted, which also contributes to shock absorption of the door closing action.

The present invention is not limited to the above embodiments, and various modifications can be made. For example, although the two substantially V-shaped cam grooves 33 provided to face each other on the outer peripheral surface of the operating lever 3 are formed continuously in a circumferential shape in the above embodiment, the substantially V-shaped cam grooves 36 may be formed separately at two locations at positions facing each other. The fluid filled in the fluid chambers 7 and 8 is not limited to oil, and may be other viscous liquid or air. In the case of using air as the fluid pressure damper mechanism, for example, an air damper portion of the prior art as disclosed in patent documents 1 and 2 may be used below the piston.

Industrial applicability

The present invention can be used as a hinge for a bidirectional door that opens inward and outward.

Claims

1. The utility model provides a two-way automatic door closing hinge for opening door which characterized in that includes:

a cylinder;

an operating lever rotatably attached to one end of the cylinder so that movement in the longitudinal direction is restricted;

two substantially V-shaped grooves provided in opposition to the outer peripheral surface of the operating rod in the cylinder;

two balls arranged to engage with the substantially V-shaped groove and to face each other;

a piston that engages with the ball, and moves in the longitudinal direction in the cylinder in conjunction with movement of the ball relative to the substantially V-shaped groove;

a compression coil spring disposed between the piston and an upper end portion of the cylinder, and urging the piston toward the other end side of the cylinder; and

and a fluid pressure damper mechanism for damping the movement of the piston toward the other end side by hydraulic pressure.

2. The hinge for automatically closing door for two-way opening door according to claim 1,

the substantially V-shaped groove is formed continuously in a circumferential shape.

3. The hinge for automatically closing door for two-way opening door according to claim 1 or 2,

in the fluid pressure buffer mechanism, the other piston is provided below the piston by fixing the shaft portion of the other piston to the bottom portion of the piston, a partition having a flow path is provided between the bottom portion of the piston and the bottom portion of the other piston, a first fluid chamber is provided between the bottom portion of the piston and the partition, a second fluid chamber is provided between the partition and the bottom portion of the other piston, and a choke of the flow path of the partition when a fluid flows from the first fluid chamber to the second fluid chamber is smaller than a choke of the flow path of the partition when a fluid flows from the second fluid chamber to the first fluid chamber.

4. The hinge for automatically closing door for two-way opening door according to claim 3,

an air hole is provided in the bottom of the cylinder, an air reservoir is formed between the bottom of the other piston and the bottom of the cylinder in response to the rise of the other piston, and the air reservoir disappears in response to the fall of the other piston.

5. The hinge for automatically closing door for two-way opening door according to claim 1 or 2,

the fluid pressure damper mechanism is a hydraulic damper mechanism that damps movement of the piston toward the other end side by hydraulic pressure.

6. The hinge for automatically closing door for two-way opening door according to claim 3,

7. The hinge for automatically closing door for two-way opening door according to claim 4,

8. A door structure with a bidirectional door capable of opening and closing inward and outward is characterized in that,

the hinge for automatically closing a door that opens in two directions according to any one of claims 1 to 7 is provided at a door support portion or at a door, and the support hinge mounted on the hinge for automatically closing a door that opens in two directions is provided at a door or at a door support portion.