JPH03125773A - Hinge - Google Patents

Abstract

PURPOSE:To permit locking at an optional opening angle and on the closing position as well as make the opening operation of door easy by a method in which the spring force of a compression spring is applied as the axial press force of a movable cam to a specific-shape fixing cam. CONSTITUTION:One spring 10 is used as torsion or compression spring, and the spring force of the compression spring is applied as the axial press force of a movable cam 9 to a fixing cam 6 to open or close a door. These cams 6 and 9 are shaped into a specific form that generates a torque from an optional opening angle in the opening direction of the door. When external forces are applied, a movable shaft 8 is screwed to the direction to store a spring force to run the shaft 8 to the opposite direction, and a movable cam 9 to couple is also turned to make the opening operation of the door easier. The door can thus be locked at an optional opening degree and on the closing position.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a hinge applied to a normal door that can be opened and closed in the left-right direction, a flap door that can be opened and closed in the -F downward direction, a toilet lid, etc. Regarding this.

(Prior art) Conventional hinges use springs to obtain resistance and power, and the resistance provides a buffering effect against the door load torque when the door rotates in one direction, that is, a braking force. It is known that the power is used to lightly rotate the door due to a spring effect when the door is rotated in the other direction.

(Problem to be Solved by the Invention) However, in the conventional hinge 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, When the spring is arranged so that power is stored in the direction of opening the door, the movable axis is set so that the door can be opened easily and the door does not close involuntarily when it is in the open position. When a spring force is applied to.

The closing operation of the door would be very heavy overall, so it is necessary to make it possible to open the door easily, and to ensure that the door remains open, so that the door does not close involuntarily.
Moreover, in order to be able to close the door slowly and lightly, a fairly complicated mechanism must be used.

The present invention was obtained as a result of studies to solve the above-mentioned drawbacks of the conventional hinges.One swing is used as a compression spring as well as a torsion spring, and when used as a compression spring. By applying the spring force as an axial pressing force of the movable cam against the fixed cam, it is possible to easily open and close doors, etc., and by making the cam have a unique shape, the spring can be moved at any angle. The purpose of this is to allow the door to act in the opening direction from the opening direction, and to lock the door or the like at any opening angle and closing position.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a case in which a fixed cam is disposed, and a movable cam that rotates together with a movable shaft that can be freely rotated by opening and closing a door, etc. .

The movable cam is arranged to be slidable in the axial direction, and the spring stores rotational force in the other direction of the movable shaft by rotation of the movable shaft in one direction, and connects the movable cam to the fixed cam. It is arranged so as to be pressed in the axial direction against the
The fixed cam and the movable cam are engaged with each other at a predetermined circumferential position by advancing the rotational angle of the movable cam due to the pressing of the spring, so that the movable shaft is rotated at the maximum rotational angle I'f within the rotational angle I'f@. It is an object of the present invention to provide a hinge characterized in that it is in a locked state at a predetermined side rotation angle or a minimum side predetermined rotation angle.

(Function) When an external force such as a door is applied to the movable shaft as a rotational force in one direction, the movable shaft is rotated in that direction, but at this time, the movable shaft causes the spring to rotate in its winding direction. When the movable shaft is screwed in, a spring force is accumulated to rotate the movable shaft in the opposite direction to the above direction, and the movable cam engaged with the movable shaft is also rotated.

For example, when a flap door, etc. is installed so that it is in the closed position at O'' and in the open position at 110', when the door, etc. is closed, the movable shaft fixed to the door, etc. is rotated, and the spring is loaded. When the spring is arranged like this, the spring force acts on the movable shaft in the direction of opening the door, etc., making it easier to open the door.

Also, the above spring is used as a compression spring that presses the movable cam toward the fixed cam, so when the door etc. opens at an arbitrary angle (for example, 1oo0), the rotation of the movable cam causes the protrusion to move by -1 toward the fixed cam. When the protrusion moves to the position of the inclined surface provided on the negative side of the recess, the protrusion is guided by the inclined surface by the spring force and enters the recess of the fixed cam, and the door etc. reaches its maximum or maximum position. The opening angle is advanced to a predetermined opening position fi (110°) and locked.

That is, the movable cam has a spring force acting in the axial direction,
By entering the fixed cam while advancing the rotation in the circumferential direction by the inclined surface of the fixed cam, the door etc. is rotated from an arbitrary open position (100') to an open position (110'), and its It is locked in position, thus preventing it from being unlocked and inadvertently closed by some external force.

Therefore, in this case, in the present invention, the cam shapes of the fixed cam and the movable cam are formed so that a torque is generated in the direction of opening the door etc. from an arbitrary opening angle.

As a result 1, according to the present invention, the door can be rotated to the open position by arbitrarily changing the cam shapes of both the cams,
It is possible to select action modes for the door etc. at various positions, such as locking the door in that position or locking the door in the closed position.

(Example) An example of the present invention will be described below with reference to the drawings.

1 to 7 show a first embodiment of the present invention.

First, as shown in FIGS. 1 to 3, a horizontally cylindrical case l has a protruding shaft 1 at the center of the inner surface of its end wall 1a.
b is provided protrudingly, and a female screw portion 1c and a plurality of concave grooves are provided on the inner periphery of the opening at the other end! d... are long in the axial direction and are provided respectively.

The horizontally cylindrical movable cylinder 2 has an axial length that is as short as about 1/2 of the effective length in the axial direction inside the case l, and its outer diameter is as short as that of the case l. The terminal wall 2a has a shaft hole 2b recessed in the center of the outer surface, and a protruding shaft 2c in the center of the inner surface.
The O-ring 3 is provided in the case l so as to protrude in the axial direction, and the above-mentioned protruding shaft 1b is fitted into the shaft hole 2b. It is arranged so that it can be fitted into a liquid-tight state and rotated in the direction around the axis.

In this way, a chamber ^ sealed by the O-ring 3 is formed between the end wall 1a and the peripheral wall Is of the case l and the end wall 2a and the peripheral wall 2e of the movable cylinder 2, and in this chamber A,
For example, a polymeric viscous fluid such as polyisobutylene or a viscous fluid B such as pitch or high-viscosity water glass is accommodated.

The horizontally cylindrical spring receiver 4 is provided with a cylindrical recess 4a and a polygonal recess 4b in symmetrical positions at its center, and an outward flange 4C is provided on the outer periphery of the end on the side of the recess 4a. The spring receiver 4 is provided in a protruding manner within the movable cylinder 2 through a spring one-way clutch 5 disposed in the recess 4a and interposed between the movable cylinder 2 and the protruding shaft 2c. It is placed at the center of the case l so that it can rotate.

The spring one-way clutch 5 is constructed by tightly winding a spring steel wire having a rectangular cross section or a circular cross section in the axial direction, so that the inner peripheral surface of the recess 4a of the spring receiver 4 has a predetermined diameter. One end 5a, which is formed in close contact with the movable cylinder 2 and is perpendicular to the axial direction thereof, is hooked in a recess 2f formed in the protruding shaft 2c of the movable cylinder 2, and the other end 5b is It is in a free state without being hooked to any member.

The fixed cam 6 is formed in the shape of a thick disk, with a cylindrical shaft hole 6a passing through the center thereof, and a plurality of protrusions 6b extending in the axial direction on the outer periphery. The protrusions 6b are fitted into the grooves 1d of the case l, and the female screw portion 1 of the case l is fitted.
While supported by the cover plate 7 screwed onto the case l, the case l is
Fixed to .

As shown in FIG. 4 (B) and FIG. 6 (A), (B), and (C), this fixed cam 8 has three recesses 6c on its inner end surface ad in the circumferential direction. are provided in the radial direction at equal intervals, and on the - side of each recess 8c...
An inclined surface θe that slopes downward from the inner end surface to the bottom of the recess 8c is formed in the circumferential direction.

The movable shaft 8 is rotatably penetrated through the shaft hole 6a of the fixed cam 8 and is supported on the center line of the case l.

The movable shaft 8 has an arbitrary polygonal cross-sectional shape, and the end extending into the case l is
It is fitted into the polygonal concave hole 4b of the spring receiver 4.

Next, the movable cam 9 moves as shown in FIGS. 3, 4 (A), and 6 (
As shown in (a), (b), and (c), it is formed into a thick disk shape, with a polygonal shaft hole 9a passing through its center, and one end surface 9b in the axial direction. Three protrusions 9c are provided at equal intervals in the circumferential direction and protrude long in the radial direction so that they can fit into the recesses 8c of the fixed cam 6.

That is, each protrusion 9c of the movable cam 9 has its -
An inclined surface 9d is formed on the side so as to correspond to the inclined surface 8e of the fixed cam 6.

The movable cam 9 is located at the extending portion of the movable shaft 8 into the case 1, and is arranged between the spring receiver 4 and the fixed cam 6 so that it does not rotate in the direction around the axis and is slidable in the axial direction. The protrusion 8c...
Both cams 9.6 are supported by the movable shaft 8 in opposition so that the cams 9.6 can be freely engaged with and disengaged from the recesses 6c of the fixed cam 6.

The spring 10 is disposed inside the case 1, with each end thereof abutting against the flange 4c of the spring receiver 4 and the side surface of the movable cam 9, respectively.

In the illustrated example of the spring IO, a coil spring is used to apply 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. The spring 10 is arranged to press the movable cam 8 toward the fixed cam 6. Therefore, the length of the spring 10 is longer than the dimension between the flange 4C of the spring receiver 4 and the side surface of the movable cam 8. One end 10a with a protruding surface is hooked onto the flange 4c of the spring receiver 4, and the other end 10b is attached to the peripheral wall l of the case l.
e It is fitted into the long groove IF provided on the inner surface so as to be able to slide freely in the axial direction.
0b may be latched and engaged as described above, and when this is done, a spring force is applied to the movable shaft 8 by the required rotation angle from the 00 position.

The projecting end of the movable shaft 8 extending outward from the case 1 is connected and fixed to a rotational center of a door (not shown) so that a rotational force as an external force acts on the movable shaft 8.

Also, the spring one-way clutch 5 is as follows.

Movable axis 8. When the spring receiver 4 is rotated in one direction, that is, in the direction of arrow C shown in FIG. , spring receiver 4
and are connected to each other so that they rotate together.

Conversely, when the movable shaft 8 and the spring bearing 4 are rotated in the direction of the arrow shown in FIG. The movable shaft 8, the spring receiver 4, and the movable tube 2 are disconnected from each other.

That is, the spring one-way clutch 5 has a movable shaft 8. Depending on the rotation direction of the spring receiver 4, the movable shaft 8,
It functions so that the power transmission between the spring receiver 4 and the movable cylinder 2 can be switched between an on-off state and an on-off state.

When the above-mentioned hinge is used for the toilet seat, toilet lid, or flat door (not shown in Figure 1) of the toilet bowl shown in Figure 7, the movable shaft 8 is
1, and the case 1 is attached to a toilet seat mounting member, that is, a toilet bowl 12. For example, when the toilet seat 11 is connected to
If the toilet is installed so that it is in the closed position at 06 in the horizontal state and in the open position at a wider angle of 110° than in the vertical state, when the first toilet seat It is opened, the movable shaft 8 is in the first position.
The two toilet seats 11 and the movable shaft 8 are rotated in the direction of the arrow in the figure.
are connected.

When the toilet seat 11 is opened from the 06 position and the movable shaft 8 is rotated in the direction shown by the arrow, the spring holder 4 is urged in the direction shown by the spring 10 in the closed position of the toilet seat 11. Due to the engagement of the spring receiver 4 and the movable shaft 8 in the periaxial direction, the movable shaft 8 is moved by the restoring force of the spring IO being stored in the rotational direction via the spring receiver 4. The spring receiver 4 is also rotated in the direction of the arrow along with the movable shaft 8, the diameter of the spring one-way clutch 5 is reduced, and the close contact between the spring one-way clutch 5 and the spring receiver 4 is released.
The movable shaft 8, the spring bearing 4, and the movable cylinder 2 are disconnected, the clutch is in a "disconnected" state, and the movable shaft 8. Only the spring receiver 4 will be rotated in the direction of the arrow.
Since the movable cylinder 2 is not rotated, the shear resistance force due to the viscous fluid B does not act at this time.

Also, due to the engagement of the movable cam 3 and the movable shaft 8 in the axial direction,
The movable cam 9 is rotated together with the movable shaft 8 in the direction indicated by the arrow. At this time, the spring 10 causes the movable cam e to rotate as shown in FIG. 6(a). As shown, the fixed cam 6 is rotated in the direction of the arrow while being pressed against the side end surface 6d.

Therefore, by the opening operation of the first toilet seat 11, the movable shaft 8 is further rotated in the direction of the arrow, and the toilet seat 11 is moved to the position shown in FIG.
When opened to the 0° position, the protrusion 9C of the movable cam 9 moves to the inclined surface 6e of the fixed cam 6, and when it rides on the inclined surface Be as shown in FIG. 6(b), the movable cam 9 is biased toward the fixed cam 6 by the spring 10, a torque in the opening direction is generated, and as a result, the protrusion 8C is guided toward the recess 6c by the inclined surface 6e. As shown in FIG. 1 and FIG. 6(c), the protrusion 9C enters the recess 6c, and the movable cam 9 becomes engaged with the fixed cam 6, and the first toilet seat 11 (movable shaft)
is in a locked state at the open position (110°).

Next, by rotating the toilet seat 11 in the closing direction, the movable shaft "8" and the spring receiver 4 are rotated in the direction of arrow C in FIG. 4a, the movable cylinder 2 is connected to the spring receiver 4 and the movable shaft 8, and as the movable cylinder 2 is rotated, the viscous shearing resistance caused by the viscous fluid B resists the rotational force of the movable shaft 8. I ended up working there.

Also, at this time, the spring l is rotated by the rotation of the spring receiver 4.
O is screwed in the winding direction, and the resistance force for screwing in acts against the rotational force of the movable shaft 8, so the toilet seat 11 slowly and smoothly closes to the 0° position. It happens.

Furthermore, at this time, the movable cam 8 is rotated together with the movable shaft 8 in the direction of arrow C in FIG. 1, that is, from the position in FIG.・・・
. . ., the inclined surfaces Be and 9d slide against each other and climb up on the side end surface 6d of the fixed cam 8 against the spring force 2.
The toilet seat 11 will be unlocked in its open position.

In FIG. 7, the arrow E indicates the direction in which the restoring force of the spring IO acts on the movable shaft 8 and the toilet seat 11, and the arrow F indicates the direction in which the restoring force of the spring IO acts on the movable shaft 8 and the toilet seat 11.
indicates the direction in which the viscous shear resistance force acts, and arrow G indicates the direction in which the viscous shear resistance force does not move.

8 to 12 show a second embodiment of the present invention.

As shown in FIGS. 8 to 11, the case l has a cylindrical portion 1g protruding from the center of the inner surface of the end wall 1a,
A shaft hole 1h is recessed laterally at the center of the inner end of the cylindrical portion 1g.

The movable shaft 8 is rotatably passed through the shaft hole 6a of the fixed cam 6 fixed to the case l, and is supported on the center line of the case l.

One end of the movable shaft 8 extending into the case l is
The movable shaft 8 is rotatably fitted into the shaft hole 1h of the case l, and is located at a portion of the movable shaft 8 that extends into the case l, and has an arbitrary position between the cylindrical portion 1g and the fixed cam 8. The movable cam 8 is fitted into the polygonal portion 8a so as to be slidable in the axial direction and rotatable together with the movable shaft 8 in the circumferential direction.

The spring 10 is housed in the case 1 with each end thereof abutted against the inner surface of the terminal wall 1a of the case 1 and the side end surface of the movable cam 8, and the one end 10a which has lost itself is , is hung in a recess 1i recessed in the terminal wall 1a, and the other end 10b is engaged with a length 118b recessed in the upper rotation shaft 8 in the axial direction so as to be slidable only in the axial direction. As a result, the movable shaft 8 is rotated in the direction of arrow C shown in FIG.
O is screwed in the winding direction.

Here, the effective length of the spring 10 is set longer than the dimension between the inner surface of the terminal wall 1a of the case 1 and the side end surface of the movable cam 9, so that the movable cam 8 is always pressed against the fixed cam 8. energized.

The fixed cam 6 is located on the opposing surface of the fixed cam 6 and the movable cam 9.
, there are three recesses 6e having a substantially semicircular cross section.
are provided at equal intervals in the circumferential direction and long in the radial direction,
On the other hand, the movable cam 8 is provided with three protrusions 8c each having a substantially hemispherical cross section and extending circumferentially at equal intervals and radially long, and engaging and disengaging from the recess 8e. It is free.

Note that this embodiment does not include the movable shaft 2, the spring receiver 4, and the viscous wave body B according to the embodiments described above.

When the above-mentioned hinge is used for the toilet seat 11 of the toilet bowl shown in FIG. 12, etc., the movable shaft 8 is connected to the toilet seat 11 in the same manner as in the embodiment described above.

When the toilet seat 11 is opened from the 00 position and the movable shaft 8 is rotated in the direction of the arrow in FIG. The movable cam 8 is rotated together with the movable shaft 8 in the direction indicated by the arrow, and at this time, the spring 10 causes the movable cam 8 to rotate toward its protrusion 9c.
. . . is the fixed cam 6 as shown in Fig. 11 (a).
is rotated in the direction of the arrow while being pressed against the side end surface 111d.

When the toilet seat 11 is further opened and reaches the open position (110'), the protrusion 9c of the movable cam S is inserted into the recess 8c of the fixed cam 6, as shown in FIG. The front cams B and 8 enter into the engaged state, and the toilet seat 11 is locked in the open position (l!0°).

Furthermore, by rotating the toilet seat 11 in the closing direction, the movable shaft 8 is rotated in the direction of arrow C in FIG. Therefore, the toilet seat 11 closes slowly and smoothly to the 0° position.

At this time, due to the rotation of the movable cam 9 in the direction of arrow C, the protrusion 9c...... of the fixed cam 8 is moved by the concave part 6C...
. . against the pressing force of the spring 10, and the toilet seat 11 is unlocked in its open position.

13 to 47 show a third embodiment of the present invention.

In this embodiment, the shapes of the fixed cam 6 and the movable cam 3 are different from the shapes of the cam 6.9 according to the first embodiment described above.

That is, the - side slope 6e of the recess 6C of the fixed cam 6 and the - side slope 8d of the protrusion 8C of the movable cam 9 are different from those of the first embodiment described above. The fixed cam 6 and the movable cam 9 are inclined in the circumferential direction opposite to the inclined surfaces Be and 9d, and the other configurations are the same as in the first embodiment.

When the above-mentioned hinge is used for the ordinary door 11a shown in FIG. 17, etc., the movable shaft 8 is connected to the door 11a in the same manner as in the first embodiment.

When the door 11a is opened from the 0° closed position and the movable shaft 8 is rotated in the direction of the arrow shown in the figure, the restoring force of the spring IO is accumulated in the direction of rotation of the movable shaft 8 at the same position of the door 11a. By being biased, the movable shaft 8 is rotated in the direction of the arrow along with the movable cam 8,
The door 11a is opened to the open position (110°).

Also, by rotating the door 11a in the closing direction.

The movable shaft 8 is rotated in the direction of arrow C, and at this time, the spring 10 is screwed in the winding direction in the same manner as in the first embodiment, and the resistance force for screwing in and the viscous shear resistance force due to the viscous fluid are acts against the rotational force of the movable shaft 8, and therefore.

The door 11a will be closed slowly and smoothly.

At this time, when the movable cam 8 is rotated together with the movable shaft 8 in the direction of arrow C, the door 11a is closed near the closing position 00, that is, to point H in FIG. 17, as shown in FIG. 16(a). Similarly, the protrusion 9c of the movable cam 9 that was pressed against the side end surface 6d of the fixed cam 6 by the spring IO...
...As the tip moves to the inclined surface 6e of the fixed cam 6 as shown in FIG.・・・・・・
enters the recess 6c of the fixed cam 8, and the first and second cams 6.9 become engaged, and the door 11a rotates from point H to the closed position of 06 and is locked in that closed position. Become.

In addition, in FIGS. 12 and 17, arrows E, F, and G are
The same direction as FIG. 7 is shown.

(Effects of the Invention) Since the present invention is configured as explained above, if a movable shaft is connected to a flap door or an ordinary door and the hinge is used to attach the door, etc., the door etc. can be attached to any desired position. Since the hinge can be locked at the opening angle and the closed position, the restoring force of the spring biases the door, etc. in the opening direction.By using this hinge for a flap door, etc. that opens almost vertically, Even if the spring force is at the open position where the spring force is not 1@, the door can be reliably advanced and locked by pushing aside obstacles such as wiring on the back side of the toilet lid. It is possible to prevent movement and involuntary closing operation, and
By being able to lock the door in the closed position against the restoring force of the spring that biases it in the door opening direction, it is also possible to prevent the door from opening suddenly.

Also, by changing the cam shape of the fixed cam and movable cam, it is possible to generate torque in the FM4 direction or the closing direction of the door, so by changing the cam shape in this way, it is possible to generate torque at any angle. The door can be opened or closed and locked in the open or closed position, and since some springs are used, the structure is simple and inexpensive.

[Brief explanation of the drawing]

1 to 7 show a first embodiment of the hinge according to the present invention, and FIG. 1 is a vertical sectional view in a locked state, and FIG.
The figure is a longitudinal sectional view in the unlocked state, Figure 3 is an exploded perspective view,
Figures 4 (a) and (b) are perspective views of the movable cam and fixed cam,
Figures 5 (a) and (b) are longitudinal sectional views in the locked and unlocked states showing the relationship between the fixed cam and the movable cam, as well as the spring and the movable shaft, respectively, and Figures 6 (a), (b) and (h). ) are circumferential cross-sectional explanatory diagrams showing the states of engagement between the fixed cam and the movable cam, FIG. 7 is a side view showing an example of use when the hinge is used for installing a toilet seat, and FIG. 8 ~ Figure 12 shows a second embodiment of the same hinge, Figure 8 is a longitudinal cross-sectional view in the locked state, Figure 9 is a vertical cross-sectional view in the unlocked state,
1θ Figures (A) and (B) are perspective views of the movable cam and the fixed cam, Figures 11 (A) and (B) are circumferential cross-sectional explanatory diagrams showing the engagement state of the movable cam and the fixed cam, and Figure 12 Figure 1 is a side view showing an example of the use of the same hinge for installing a toilet seat.
Figures 3 to 17 show a third embodiment of the same hinge, with Figure 13 being a partially cutaway side view of the locked state, and Figure 14 being a partially cutaway side view of the locked state.
The figure is a partially cutaway side view of the unlocked state, Figure 15 (a)
(B) is a perspective view of the movable cam and the fixed cam, FIG. 16 (A), (B), and (C) are circumferential cross-sectional explanatory views showing the engagement states of the movable cam and the fixed cam, and FIG. 17 is the same hinge. It is an explanatory view when it is used for attaching a general door. 1. Jusho ring 9 Case 6...Fixed cam 8...Movable shaft 8...Movable cam lO...Spring Fig. 1 Fig. 2

Claims (1)

[Claims] In the case in which the fixed cam is disposed, a movable cam is disposed so as to rotate together with a movable shaft which is freely rotatable by opening and closing a door, etc., and to be able to slide freely in the axial direction. Rotation of the movable shaft in one direction accumulates rotational force in the other direction of the movable shaft, and the movable cam is arranged to press against the fixed cam in the axial direction, and the fixed cam and the movable cam mutually is engaged at a predetermined position in the circumferential direction by the rotation advance of the movable cam due to the pressing of the spring, so that the movable shaft is rotated at the maximum predetermined rotation angle or the minimum predetermined rotation angle within the rotation angle range. A hinge characterized in that it is in a locked state when the hinge is in a locked state.