JPH0411114Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a hinge device that rotatably supports a relatively lightweight door of a toilet or the like and biases the door in the closing direction.

BACKGROUND ART Various hinge devices have been known that rotatably support a relatively lightweight door of a toilet or the like and bias the door in a closing direction. There are two types of doors: those that open inward and those that open outward, and it is therefore necessary to use a hinge device that corresponds to the opening direction.

Problems to be Solved by the Invention As described above, in the past, it was necessary to use a hinge device that corresponds to the direction in which the door opens, and therefore it was necessary to assemble two types of hinge devices, resulting in high costs.

This invention solves these problems,
The purpose is to enable one type of hinge device to be used regardless of the opening direction of the door.

Means for Solving the Problem In order to solve this problem, the present invention includes a main body that is built in and fixed to the door, and a main body that is provided inside the main body so as to be able to rotate with respect to the main body in the vertical direction. A shaft that protrudes from the main body and is fixed to a bearing on the building side, a pair of spring bearing members that are externally fitted to the shaft at a vertical interval within the main body, and a pair of spring bearing members that are externally fitted to the shaft. The upper and lower ends of the coil springs are located in the upper and lower spring receiving members, respectively, and one of the pair of spring receiving members has a coil spring that moves inside the main body only when the main body rotates in one direction. A rotation receiving protrusion that comes into contact with the provided pressing part to receive rotational force; and a rotation regulating protrusion that comes into contact with a stopper provided on the shaft to stop the rotation of one of the spring receiving members in the opposite direction. The other spring receiving member is provided with a rotation receiving protrusion that comes into contact with a pressing part provided inside the main body and receives rotational force only when the main body rotates in the opposite direction, and one of the other spring receiving members. In order to stop the rotation of the shaft, a rotation regulating protrusion that contacts a stopper provided on the shaft is provided, and the main body is further provided with a horizontally oriented cylinder chamber, and the cylinder chamber is provided with a projection that contacts a cam provided on the shaft. A piston that reciprocates in contact with the piston, a spring that biases the piston toward the shaft, and oil that is pushed by the movement of the piston and flows into the room on the opposite side from the side where the piston moves, and when the door closes. Means is provided for adjusting the flow rate of oil due to the movement of the piston due to the pressure of the cam.

Function: With this configuration, when the door rotates in one direction or the other, one of the spring receiving members rotates and twists the coil spring, transmitting the force of the coil spring to the door and opening the door. Can be closed automatically.
In addition, by pushing the piston in the cylinder chamber against the spring force when the door closes, the door can be braked by the spring's resistance force and the adjusted oil flow rate, allowing the door to close gently. be able to.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a hinge device body consisting of a vertically oriented cylindrical portion 2 and a cylinder chamber 3 horizontally formed integrally with the lower end of this cylindrical portion 2. A shaft 4 is provided which is fitted into the portion 2 and faces in the vertical direction, and the lower end of the shaft 4 projects downward from the main body 1.
A cap 5 is fixed to the upper end of the cylindrical part 2 with a screw 6, and pivotally supports the upper end of the shaft 4. A cap 7 is screwed into the lower end of the main body 1 located directly below the cylindrical part 2, and is attached to the shaft 4. This bearing member 7 pivotally supports the lower end, and the bearing member 7 is provided with an O-ring 8 that comes into contact with the outer peripheral surface of the shaft 4 . A partition 9 is formed in the main body 1 to separate the cylindrical portion 2 and the cylinder chamber 3. A hole 10 through which the shaft 4 is inserted is formed in the partition 9. is provided with an O-ring 11 that comes into contact with the outer peripheral surface of the shaft 4. Reference numerals 12 and 13 denote spring receiving members loosely fitted to the shaft 4 at both upper and lower ends of the upper cylindrical portion 2 of the partition portion 9, and the upper spring receiving member 12 includes a cylindrical portion 12a for shaft insertion, and this cylindrical portion 12a. A flange portion 12b formed at the upper end, a rotation receiving protrusion 12c formed on the upper surface of the flange portion 12b within a range of about 1/4 circumference, and a rotation receiving protrusion 12c formed on the lower surface of the cylindrical portion 12a about 1/3 Rotation regulating protrusion 1 formed in a circumferential range
2d, and a spring hooking notch 12e formed in the vertical direction by dividing a part of the cylindrical part 12a in the circumferential direction. Further, the lower spring receiving member 13 has substantially the same structure as the upper spring receiving member 12, and is arranged upside down from the upper spring receiving member 12. Note that 13a is a cylindrical portion, 13b
is a flange part, 13c is a rotation receiving protrusion, 13d
13e is a rotation regulating protrusion, and 13e is a spring hooking notch. A coil spring 14 is fitted onto the shaft 4 between the upper and lower spring receiving members 12 and 13, and both upper and lower ends of the coil spring 14 are connected to the spring hooking notch 1.
2e and 13e, at which time the coil spring 1
The force 4 acts by urging both the spring receiving members 12 and 13 to rotate in opposite directions. Incidentally, pins 15 and 16 are protrudingly provided on the shaft 4 and function as stoppers that can come into contact with the rotation regulating protrusions 12d and 13d of the spring receiving members 12 and 13.
Further, on the inner surface of the cylindrical portion 2, pressing portions 17 and 18 are formed which can come into contact with one end surface of the rotation receiving protrusions 12c and 13c of the spring receiving members 12 and 13. Reference numeral 19 denotes a cam fixed to the shaft 4 below the partition portion 9, and this cam 19 is held in place within the cylinder chamber 3 by a spring 20.
When the large diameter portion 19a of the cam 19 contacts the roller 22, the piston 21 is moved against the spring 20 via the roller 22. It's like pushing. The cylinder chamber 3 is filled with oil, and as the piston 21 moves within the cylinder chamber 3, the oil in the chamber on the side to which the piston 21 has moved flows to the chamber on the opposite side of the piston 21. It's getting old. That is, when the door (described later) is closed, the large diameter portion 19a of the cam 19 contacts the roller 22, and the piston 21 is pushed against the spring 20, so that the spring 20 is positioned as shown in FIG. The oil in the chamber on the right side of the piston 21 flows through channels 23 and 24 formed at the bottom of the cylinder chamber 3 into the chamber on the left side of the piston 21. The flow path 23 is formed at the bottom of the cylinder chamber 3 in the length direction of the cylinder chamber 3, and one end opens into the cylinder chamber 3 at a position above the bearing member 7,
The adjustment screw 25 is screwed into the cylinder chamber 3 from the other end, and the chamber on the side where the spring 20 is located and the flow path 2
The amount of communication with 3 is adjusted. The chamber on the side where the spring 20 of the cylinder chamber 3 is located and the flow path 23 are communicated with the flow path 24, and the communication portion between the flow path 23 and the flow path 24 is established by the tip of the adjustment screw 25. is adjusted. Specifically, the tip of the adjusting screw 25 has a V-shaped cut portion 26 when viewed from the tip side, and this cut portion 26 allows the flow path 23 around the adjusting screw 25 to be closed.
The large diameter portion 23a and the flow path 23 on the tip side of the adjusting screw 25
The amount of communication with is adjusted. With this adjustment, the flow path 2
The amount of communication between 3 and 24 is determined. Note that the flow path 23
and 24 refer to a flow path 27 formed in the adjustment screw 25 in addition to the communication through the cut portion 26, more specifically, a flow path 27 formed at an appropriate length in the longitudinal direction from the tip of the adjustment screw 25 and formed at right angles from the tip. A ball valve 28 is communicated via a passage 27 and is urged by a spring 29 to abut against the opening of the passage 27 at the tip of the adjusting screw 25. The biasing force of the spring 29 is set to be weaker than the hydraulic pressure from the chamber on the right side of the piston 21 in FIG. 2. Therefore, when the piston 21 moves to the right side in FIG. pushes the ball valve 28 and flows into the flow path 23, and the V
It flows from the shaped cut portion 26 into the flow path 23 and then moves to the chamber on the left side of the piston 21. Reference numeral 30 denotes a hole formed in the center of the piston 21 so as to communicate the chambers on both sides of the piston 21, and the piston 21 is located at one end of the hole 30 on the right side in FIG. 2 (in the direction in which the door is closed). A ball valve 31 is provided which is closed by the hydraulic pressure in the right room when the vehicle moves to the right side. This ball valve 31 is the piston 21
When the piston 21 moves to the left (in the door opening direction) in FIG. 3, the piston 21 opens due to the hydraulic pressure in the left chamber, allowing oil in the left chamber to flow into the right chamber. 32 is a pin whose tip engages with a groove 33 formed in the lower end of the piston 21 below the pivot point of the roller 22 to prevent the piston 21 from rotating within the cylinder chamber 3 when the piston 21 moves. , is screwed into the cylinder chamber 3 from below.

The hinge device configured as described above is built into either the upper and lower ends or both upper and lower ends of the door, and when the hinge device is provided at the upper end of the door, it is attached so that the shaft 4 protruding from the main body 1 faces upward.

Fig. 5 shows a state in which a hinge device is built into the upper end of the toilet door and supports the door.The shaft 4 protruding from the upper end of the door 34 is fitted and fixed in a bearing 35 provided on the building side, and the door 34 is supported by a hinge device. The lower end is rotatably supported by a hinge device 36 provided separately from the hinge device at the upper end. In the hinge device, the main body 1 is attached to a support member inside the door 34 with screws 38 via a plate 37.

Now, when opening the door 34 outwardly, the hinge device shown in the drawing has the shaft 4 fitted and fixed in the bearing 35, whereas the main body 1 rotates integrally with the door 34 and the spring The receiving members 12 and 13 act so that the spring force of the coil spring 14 applied thereto is transmitted to the main body 1. That is, when the door 34 is opened outward (in the direction of arrow A) in FIG. 5, the rotation regulating projection 12d of the spring receiving member 12 contacts the pin 15 of the shaft 4 as shown in FIG. The pressing part 1 on the inner surface of the cylindrical part 2
7 rotates in a direction away from the rotation receiving protrusion 12c, while the spring receiving member 13 rotates as the rotation receiving protrusion 13c is pushed by the pressing portion 18 on the inner surface of the cylindrical portion 2, as shown in FIG. At this time, the rotation regulating protrusion 13d moves away from the pin 16, and the rotation of the spring receiving member 13 winds the coil spring 14. After opening the door 34 at a certain angle, when the door 34 is released, the rotation regulating protrusion 13d moves away from the pin 16. The force of the coil spring 14 is transmitted from the spring receiving member 13 to the door 34 via the main body 1, and the door 3
4 closes automatically. When the door 34 is to be opened inward (in the direction of arrow B) in FIG. 5, the functions of the spring receiving members 12 and 13 are completely opposite to those when opening outward, and the spring receiving member 13 is in a fixed state. Yes, the spring receiving member 12 rotates and the coil spring 1
The force of 4 is transmitted to the door 34 to automatically close the door 34 after being opened. Note that the pins 15 and 16 are connected to the rotation regulating protrusion 12d when the door 34 is closed.
13d, and serves as a stopper when the door 34 is closed. By the way, when the door 34 is closed, the large-diameter portion 19a of the cam 19 touches the roller 2.
2 and moves the piston 21 against the spring 20. In this state, the amount of communication from the cut portion 26 at the tip of the adjusting screw 25 is adjusted, so that the piston 21 is free of oil. The brake can be applied and therefore the door 34 can be gently closed.

Effects of the Invention As described above, according to the present invention, the hinge device of the present invention can be used regardless of the direction in which the door opens, and therefore it is not necessary to prepare a hinge device according to the direction in which the door opens, unlike the conventional method. This is not necessary, and the cost of the hinge device is also reduced, making it economical. In addition, by pushing the piston in the cylinder chamber against the spring force when the door closes, it is possible to apply a brake to the door due to the resistance force of the spring and the adjusted flow rate of oil, allowing the door to close gently. can be done.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cutaway perspective view of the main parts, FIG. 2 is a sectional view of the hinge device in the door closed state, and FIG. 3 is a sectional view of the hinge device in the door open state. , FIG. 4 is a perspective view of the upper spring receiving member, FIG. 5 is a perspective view showing the door attached state, and FIGS. 6A, B and 7A, B are explanatory views of the operation of the pair of spring receiving members. . 1... Hinge device main body, 2... Cylindrical part, 4...
Shaft, 12, 13... Spring receiving member, 12a, 13
a...Cylinder part, 12b, 13b...Flange part, 1
2c, 13c...Rotation receiving protrusion, 12d, 13
d... Rotation regulating protrusion, 12e, 13e... Spring hanging notch, 14... Coil spring, 15, 16
... Pin, 17, 18 ... Pressing part, 19 ... Cam, 19a ... Large diameter part, 20 ... Spring, 21 ...
Piston, 22...roller, 23, 24...channel, 25...adjustment screw, 27...channel, 30...
Hole, 31...Ball valve, 34...Door, 35...
bearing.

Claims (1)

[Scope of utility model registration request] a main body built into and fixed to the door; a shaft provided inside the main body so as to be rotatable with respect to the main body facing in the vertical direction, with one end protruding from the main body and fixed to a bearing on the building side; a pair of spring bearing members externally fitted on the shaft at intervals vertically; and a coil spring fitted externally on the shaft, located between the pair of spring bearing members, and having both upper and lower ends locked to the upper and lower spring bearing members, respectively. and a rotation receiving protrusion that comes into contact with a pressing part provided inside the main body and receives rotational force only when the main body rotates in one direction. In order to stop one spring receiving member from rotating in the opposite direction, a rotation regulating protrusion that comes into contact with a stopper provided on the shaft is provided on the other spring receiving member, and when the main body rotates in the opposite direction. A rotation receiving protrusion that comes into contact with a pressing part provided on the inside of the main body to receive rotational force, and a rotation regulating part that makes contact with a stopper provided on the shaft to stop the other spring receiving member from rotating in one direction. The main body further includes a horizontally oriented cylinder chamber, and this cylinder chamber includes a piston that reciprocates by abutting against a cam provided on the shaft, and urges the piston toward the shaft. A spring and oil that is pushed by the movement of the piston and flows into a room on the opposite side of the piston movement side are provided, and a means is provided for adjusting the flow rate of oil due to the movement of the piston due to the pressure of the cam when the door is closed. hinge device.