JPH03147992A - Door damper - Google Patents

Abstract

PURPOSE:To open and close a door or the like slowly and smoothly, by actuating a torque by means of a spring force and a cam and a shearing resistance by a viscous fluid against the rotary force of a movable shaft. CONSTITUTION:A spring 10 is provided to function as a torsion spring and a door or the like is energized until a specified angle in the opening direction by means of the restoring force. Next, after that, the spring 10 is used to function as a compression spring and a movable cam 9 is pressed on a fixing cam 6 to energize and to generate a torque to the opening direction to open smoothly and slowly the door until the fully opened position. Next, on closing the door, a torque to the opening direction of the movable cam 9, a spring force, and a shearing resistance by means of the viscous fluid B within a casing 1 are acted on the rotary force of the movable shaft 8 to close the door slowly and smoothly.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is applicable to a normal door that can be opened and closed in the left and right directions by turning, a flap door that can be opened and closed in the vertical direction by one turn, etc. This invention relates to a damper for doors, etc. applied to.

(Prior art) Conventionally, in dampers for doors, etc., a polymer viscous fluid such as brinybutylene or other viscous fluid and a spring have been used in combination to utilize the viscous shear resistance of the former and the spring force of the latter. The resistance force is used to provide a buffering effect, that is, a braking force, against the load torque of the door when the door rotates in one direction, and also to exert a braking force when the door rotates in the other direction. It is known that when the door is in motion, the door or the like can be rotated slightly by a spring effect.

(Problem to be Solved by the Invention) However, in the conventional valve ring damper described above, since the spring force acts on the movable shaft as a rotational force in one direction, for example, when the flap door is opened or closed, If the spring is arranged so that the power in the door opening direction is stored when the door is closed, the valve can be opened easily, and the opening position 1;! If a spring force is applied to the movable shaft so that the door, etc. is in a fixed state at hl'8, the closing operation of the door, etc. becomes extremely heavy, so it is necessary to open hl'8 lightly. In order to make the door close slowly and lightly, a fairly complicated mechanism must be used.

The present invention has been studied to solve the above-mentioned difficulties of the conventional valve ring damper, and has
By using the torsion spring as a compression spring together with the torsion spring, and by applying the spring force of the compression spring to the fixed cam as a pressing force in the axial direction of the moving cam, it is possible to The purpose of the present invention is to provide a damper for a door, etc., which generates torque in the opening direction to smoothly open and close the door, etc., and also allows the door to be stopped at an arbitrary opening angle.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a movable shaft inside a casing that is rotatable by opening and closing a door.
A single moving member is provided, and the viscous fluid in the casing is
In the damper distributed between the casing and the movable member, a spring receiver is disposed in the casing between the movable shaft and the movable member to allow two rotations, and is freely disconnectable from the movable member depending on the direction of rotation. The casing is arranged via a spring one-way clutch so that it can rotate in only one direction, and the movable cam is engaged with the movable shaft so as to be slidable in the axial direction. A spring is disposed in the casing between the spring receiver and the movable cam, one end of which is connected to the spring receiver, and the other end of which is axially connected to the casing. When the movable cam and the fixed cam are within a predetermined rotation angle range of the movable shaft, the movable cam and the fixed cam are rotated in one direction by the action of the spring force in the axial direction. An object of the present invention is to provide a valve ring damper characterized by being formed in a shape that generates torque.

(Function) When an external force is applied to the movable shaft as a rotational force in one direction, the movable shaft is rotated in that direction, but the spring bearing and movable member engaged with this movable shaft are teeth,
Since the spring one-way clutch can be freely connected and disconnected depending on the direction of rotation, the movable member is not rotated when the movable shaft and the spring receiver are rotated in one direction, and therefore no viscous shear resistance is generated.

For example, the flap door is in the closed position at θ°.

When the door is installed so that it is in the open position at 110 degrees, when the door, etc. is rotated in the closing direction, the movable shaft and the spring receiver are rotated together in the same direction, and the spring is screwed in the winding direction. This screwing resistance acts on the movable shaft, resulting in the restoring force of the spring.

This makes the door opening operation easier.

On the other hand, since the spring receiver and the movable member are connected by the action of the spring one-way clutch, the movable member is rotated together with the movable shaft and the spring receiver. A shearing resistance force is generated, which also functions as a damper by acting as resistance against the rotational force of the movable shaft.

Therefore, the spring and viscous shear resistance cause the door etc. to close gently and smoothly.

In addition, the spring mentioned above is used as a compression spring that presses the movable cam toward the fixed cam, so when the door etc. opens to an arbitrary angle (for example, 55 degrees), the movable cam,
Torque is generated in the opening direction due to the shape of the fixed cam, and the movable cam enters the fixed cam while being rotated, and the door is rotated to the open position (110°) and then locked at the predetermined open position. .

Therefore, by arbitrarily changing the shapes of the movable cam and the fixed cam, it is possible to stop the door, etc. at an arbitrary opening position, so that various actions F' for the door can be selected.

(Embodiments) Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the horizontally cylindrical casing l has a protruding shaft 1b protruding from the center of the inner surface of the end wall 1a, and the inner surface of the opening 11 at the other end has a female end. Thread part I
C is circumferentially provided, and a plurality of concave grooves 1d...
... is long and recessed in the axial direction.

The axial length of the horizontally cylindrical pivoting member 2 is approximately 1/2 of the axial length of the casing 1.
The outer diameter of the casing 1 is smaller than the inner diameter of the casing 1, and a shaft hole 2b is formed at the center of the outer surface of the end wall 2a. It is formed larger than the outer diameter of the protruding shaft Ib of l.

Further, the movable member 2 is provided with a protruding shaft 2c protruding in the axial direction at the center of the inner surface of the end wall 1a. By fitting the above-mentioned shaft hole 2b and fitting the O-ring 3 into the dowel-shaped groove 2d provided on the outer peripheral surface of the opening, the O-ring 3 is made liquid-tight and rotatable in the circumferential direction. It is arranged.

In this way, a chamber A that is closed and sealed by the O-ring 3 is formed between the end wall 1a and peripheral wall 1e of the casing l and the end wall 2a and peripheral wall 2e of the movable member 2. For example, a viscous fluid B such as a polymer viscous fluid such as polyisobutylene, pitch or high viscosity water glass is accommodated.

The horizontally cylindrical spring receiver 4 has a circular recess 4d and a polygonal recess 4b recessed in symmetrical positions in the center thereof, and an outward flange 4c on the outer periphery of the end on the side of the four parts 4a. , whose outer diameter is slightly smaller than the inner diameter of the movable member 2, and inside the movable member 2,
It is located between the protruding shaft 2c and the recess 4a, and is disposed at an axial position within the casing 1 so as to be rotatable via the spring one-way clutch 5.

The spring one-way clutch 5 is constructed by tightly winding a Henne steel wire having a rectangular cross section or a circular cross section in the axial direction, so that the inner periphery of the four parts 4d of the spring receiver 4 has a constant diameter. The one end 5a, which is formed to be in close contact with the surface, and which is perpendicular to the axial direction, hangs over the four parts 2f recessed in the protruding shaft 2c of the E-distribution rotating member 2, in the above-mentioned state. It is disposed in close contact within the four parts 4a, and the other end 5b is free without being hooked up to any member.

The fixed cam 6, as shown in FIGS. 1 to 3(B),
It is formed in the shape of a disc with a diameter of 1 mm thick, and has a circular shaft hole 6a passing through it in the axial direction at the center, and a plurality of protrusions 6b on the outer periphery, which also extend in the axial direction. The projections 8b provided on the casing 1 are fitted into the concave grooves 1d of the casing 1, and the A plate 7 is screwed onto the female thread 1c of the casing 1. It is fixed to the casing l so that it does not move in both the axial direction and the circumferential direction while being supported by the casing l.

Further, as shown in FIGS. 1 to 4, the fixed cam 8 is
An inclined surface 6d is formed in the circumferential direction on the inner end surface 8c, so that a stepped portion 6g is formed in the axial direction at the boundary between the high point 6e and the low point 6f of the inclined surface 6d.

The movable shaft 8 is rotatably inserted into the shaft hole 6a of the fixed cam 6, and is supported on the axis of the casing l.

The part of the movable shaft 8 extending into the casing 1 is formed into an arbitrary polygonal part 8a, and is fitted into the polygonal recess 4b of the spring receiver 4. As a result, the spring receiver 4 can rotate with the movable shaft 8 at zero.

The movable cam 9 is shown in Figs. 1 to 3 (A) and Fig. 4 (A).
As shown in (B), it is formed in the shape of a thick disk, with a polygonal shaft hole 9d passing through its axis, and
An inclined surface 9c is inclined in the circumferential direction on one end surface 9b in the axial direction and is formed symmetrically so as to correspond to the inclined surface 6d of the fixed cam 6. A stepped portion 9f is formed in the axial direction at the boundary portion of the portion 9e.

The movable cam 9 is located in the polygonal portion 8a of the movable shaft 8, and is fitted between the tin ring receiver 4 and the fixed cam 6 so as to be non-rotatable in the axial direction and slidable in the axial direction. The movable shaft 8 faces the fixed cam 6 so that it can freely rotate in the axial direction together with the movable shaft 8, and can freely engage and disengage in the axial direction as shown in FIGS. 4(A) and 4(B). is supported by.

The spring IQ is located inside the casing l, and each end thereof is connected to the flange 4c of the spring ring receiver 4,
The movable cam 3 is disposed in abutment against the other end surface of the movable cam 3.

The illustrated spring 1O is a coil spring, and is used to apply a rotational force to the movable shaft 8 in one direction, and to provide a resistance force when the movable shaft 8 is rotated in the opposite direction. Since the spring 10 is arranged so as to act as a torsion spring for the purpose of the present invention and as a compression spring for pressing the movable cam 9 toward the fixed cam 6, the axial direction of the spring lO is The length is formed to be longer by an appropriate dimension than the dimension between the two flange 4C of the tin ring receiver 4 and the facing surface of the movable cam 8, and the protruding end surface 10a is connected to the flange 4C of the tin ring receiver 4.
The other end 10b is fitted into a long groove l' provided in the inner surface of the peripheral wall 1e of the L casing 1 and is long in the axial direction so as to be able to freely slide in the axial direction. They are arranged in a mating manner.

Further, a rotational center of a door (not shown) or the like is connected and fixed to the protruding end of the movable shaft 8 extending outward from the casing 1 so that a rotational force as an external force acts thereon.

Further, the spring one-way clutch 5 mentioned above has a movable shaft 8.
When the tin ring bearing 4 is rotated in one direction, that is, in the direction of arrow C shown in FIG. 8. Connected to the tin ring receiver 4,
This causes them to rotate together.

Conversely, when the movable shaft 8 and the tin ring receiver 4 are rotated in the direction of the arrow shown in FIG.
The movable shaft 8, the tin ring receiver 4, and the movable member 2 are disconnected from each other in order to slide on the inner peripheral surface of the movable member 2.

That is, the spring one-way clutch 5 functions so that the power transmission between the movable shaft 8, the tin ring receiver 4, and the movable TBJ member 2 can be switched to an on/off state.

When using the above valve ring damper for the toilet seat shown in Figure 5 or a flap door (not shown in Figure 5), move the movable shaft 8 to the toilet seat! 1, and the casing 1 is attached to a toilet seat attachment member, that is, a toilet bowl 12, for example.

If the toilet seat 11 is installed so that it is in the closed position E in the horizontal state Oo as shown in the figure, and in the predetermined open position IF at a wider angle 1100 than in the vertical state, one toilet seat 11
When the toilet seat 11 is opened, the movable shaft 8 is connected to the toilet seat 11 so that the movable shaft 8 is rotated in the direction of the arrow in FIG.

Toilet seat! receives the opening operation from the closed position E, and the movable shaft 8
When the toilet seat is rotated in the direction of the arrow shown in the figure, the toilet seat is in the closed position fi.
At E, the spring 10 urges the tin ring receiver 4 in the direction of the arrow, so that the tin ring receiver 4.
Due to the engagement of the movable shaft 8 in the periaxial direction, the restoring force of the spring IO is stored in the rotational direction via the tin ring receiver 4, so that the movable shaft 8 and the tin ring receiver 4 move in the direction of the arrow. As a result, the diameter of the spring one-way clutch 5 is reduced, the tight contact between the spring one-way clutch 5 and the tin ring receiver 4 is broken, and the connection between the movable shaft 8, the tin ring receiver 4, and the movable member 2 is released. The clutch becomes disconnected, and only the EM movable shaft and the tin ring receiver 4 are rotated in the direction of the arrow, and the movable member 2 is not rotated. do not.

Also, due to the engagement of the movable cam 3 and the movable shaft 8 in the axial direction,
The 1-edge movable cam 9, together with the movable shaft 8, is shown in FIGS. 1 and 4 (A
) The movable cam 8 is rotated in the direction of the arrow shown in (B), but at this time, the movable cam 8 is rotated so that its high point 8d is the same as the high point 8d of the fixed cam 6 due to the use of the spring IO as a torsion spring.
While being pressed against it, it is rotated in the direction of the arrow to a desired angle.

In this way, when the toilet seat 11 is opened from the closed position E to the required open position G (for example, 55 degrees) in FIG. , the fixed cam 8 is rotated to the inclined surface 6d, the spring 10 is used as a compression spring, and the shape of both cams 8.9 generates torque in the opening direction.
Due to the interaction between the fixed cam 6 and the inclined surfaces fld and 9c of the movable cam 9, the movable cam 9 is rotated in the direction of the arrow shown in FIG.
g, 9F are engaged with each other, and the toilet seat 11 is in the open position F in Fig. 5.
and then locked in position F.

Also, by rotating the toilet seat 11 in the closing direction.

The moving shaft 8 and spring receiver 4 move in the direction of arrow C in FIG.
As a result, the spring one-way clutch 5 comes into close contact with the inner peripheral surface of the recess 4a of the spring receiver 4,
The movable member 2 is connected to the spring receiver 4 and the movable shaft 8, and as the movable member 2 is rotated, viscous shear resistance due to viscous flow acts against the rotational force of the movable shaft 8.

At this time, the spring 10 is screwed in the winding direction due to the rotation of the spring receiver 4, and the resistance force for screwing in acts against the rotational force of the movable shaft 8, so the toilet seat 11 slowly moves. It will smoothly move to the closed position mE.

Furthermore, at this time, the movable cam 9 is rotated together with the movable shaft 8 from the state shown in FIG. 1 in the direction of arrow C in the same figure.
The movable cam 9 has an inclined surface 9c and an inclined surface 6 of the fixed cam 6.
d are rotated while sliding in the direction of increasing inclination, and the first toilet seat 11 is unlocked at the IJJIJ position faF.

In FIG. 5, the arrow H indicates the direction in which the restoring force of the spring 10 is exerted on the movable shaft 81 and the toilet seat 11, the arrow ■ indicates the direction in which the viscous shear resistance force by the viscous fluid B acts, and the arrow J indicates the viscous shear resistance. Each shows the direction in which no force acts.

(Effects of the Invention) Since the present invention is configured as explained below,
If a movable shaft is connected to a flap door, toilet seat, etc. and the damper is used to attach the door, etc., the restoring force of the spring used as a torsion spring will bias the door in the opening direction and to an arbitrary rM angle. After that, the movable cam is pressed against the fixed cam by the spring force caused by the use of the spring as a compression spring, and a torque is generated in the opening direction from the arbitrary opening angle. The door can be opened slowly and smoothly to the open position, and can be locked in the open position, and when the door is closed, the torque acting on the cam in the opening direction, the spring and viscous shear resistance force are applied to the movable shaft. By acting against the rotational force, the door opens slowly.
The door can be closed smoothly, and the door can be stopped at the desired opening position by arbitrarily changing the shapes of the fixed cam and movable cam, so various actions can be selected for the door. Furthermore, since wooden springs are used as torsion springs and compression springs, the structure can be simplified and manufactured at low cost.

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views in a locked state and an unlocked state, respectively, showing an embodiment of the valve ring damper according to the present invention, and FIGS. 3(A) and 3(B) are Each perspective view of a movable cam and a fixed cam in the same embodiment, FIG. FIG. 3 is a side view showing a state in which the embodiment is used for attaching a toilet seat to a toilet bowl. ■...-Φφφcasing 2...Movable member 4...Spring receiver 5...Spring one-way clutch 6...Fixed cam... Movable axis...Movable cam 10...Spring

Claims (1)

[Claims] A movable member that is rotated together with a movable shaft that is freely rotatable when a door is opened and closed is disposed in the casing, and the viscous fluid in the casing is pumped into the casing by a damper distributed between the casing and the movable member. The spring receiver is located between the movable shaft and the movable member, and is arranged via a spring one-way clutch so that the spring receiver is rotatable and can be freely disconnected from and connected to the movable member depending on the direction of rotation, so that the spring receiver can rotate together only in one direction. and a movable cam is arranged so as to be engaged with a fixed cam fixed to the casing in a state where the movable cam is slidably engaged with the movable shaft in the axial direction, A spring is disposed between the spring receiver and the movable cam, with one end hooked to the spring receiver and the other end engaged with the casing so as to be movable in the axial direction, and the movable cam, A damper for doors, etc., characterized in that the fixed cam is within a predetermined rotational angle range of the movable shaft and is formed in a shape that generates rotational torque in one direction by the action of a spring force in the axial direction. .