JPH10205568A - Composite torque hinge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain large rotational torque even if the size is small, by taking a first rotational means as a cam mechanism to be operated by an elastic means, and taking a second rotational means as a fluid damper. SOLUTION: A rotational sliding cam 8 is slid and energized in one direction by an elastic means 7. The rotational sliding cam 8 is rotated together with a first rotational shaft by axially inserting and engaging a small-diameter part 5c into and with a deformation hole 8a of the axis part. The rotational sliding cam 8 is provided with projecting parts 8b, 8b projecting in the axial direction in the facing positions on the outer periphery. A fixed cam provided with a pair of projecting parts 9a, 9a and recessed parts 9b, 9b projecting in the axial direction in the facing positions on the outer periphery on one side is attached on one side of a partition wall, the small-diameter part 5c of a first rotational shaft 5 is rotatably inserted through an insertion hole provided on the axis part, and the projecting parts 9a, 9a and the recessed parts 9b, 9b are faced to and brought in contact with the projecting parts 8b, 8b of the rotational sliding cam 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite torque hinge suitable for use in opening and closing an opening / closing member such as a toilet seat or a toilet lid of a Western-style toilet.

[0002]

2. Description of the Related Art Conventionally, as a hinge for opening and closing a toilet seat and a toilet lid of a Western-style toilet bowl, a cam mechanism having a compression spring acting on a rotating shaft or a rotating torque in a specific rotating direction of a rotating shaft is canceled. Known are those using a torsion spring acting in the direction, those using a fluid damper acting on a rotating shaft, and the like.

[0003]

A conventionally known cam mechanism having only a compression mechanism having a compression spring acting on the rotating shaft has an advantage that the generated torque can be easily adjusted to the rotating moment of the toilet seat or the toilet lid. In order to obtain a rotational torque, there is a disadvantage that the device must be large.

[0004] Further, a conventional type in which only a torsion spring is applied to a rotating shaft has an advantage that a large rotating torque can be generated even with a small size. However, since a rotating torque that increases or decreases linearly is created, a sine curve is formed. There are drawbacks in that it is difficult to match the rotational moment of the toilet seat and the toilet lid to be drawn, and it is difficult to adjust the details to the rotational moment of the toilet seat and the toilet lid and to add an accent to the operation.

[0005] In addition, the one using only the conventionally known fluid damper alone does not provide a fine adjustment or an accent when opening and closing the toilet seat and the toilet lid, for example, stopping and holding the toilet seat at an intermediate angle, braking from a predetermined opening angle. There is a drawback that it is difficult to apply an action or the like.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a composite torque hinge which can provide a large rotating torque even with a small size, and which can easily adjust the rotational moment of an opening / closing body such as a toilet seat or a toilet lid, and can easily give an accent of operation. And

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, according to the present invention, a first rotary shaft is rotatably provided inside a hinge case provided with a partition wall by penetrating the partition wall. First rotation control means acting on the first rotating shaft is provided on one side of the hinge case with the partition wall interposed therebetween, and second rotation control means is provided on the other side of the hinge case with the partition wall interposed therebetween. Are provided coaxially, the first rotation shaft is connected to the second rotation shaft of the second rotation control means, and the first rotation control means is a cam mechanism operated by elastic means. It is characterized in that the means is a fluid damper.

In this case, the present invention relates to a fixed cam in which a cam mechanism is fixed to a partition wall provided in a hinge case while a rotating shaft is inserted through a center portion, and a cam mechanism is engaged with the first rotating shaft opposed to the fixed cam. The rotary sliding cam can be slid in the axial direction of the first rotary shaft while being combined, and can be constituted by elastic means for pressing the rotary sliding cam toward the fixed cam.

According to the present invention, there is further provided a case body having a fluid damper fixed in a hinge case, a second rotating shaft pivotally mounted inside the case body and having one end protruding from the case body, A valve provided on the rotating shaft,
It can be composed of a viscous fluid filled in the case body and a stopper piece protruding from an inner peripheral wall of the case body and preventing rotation of the valve.

According to the present invention, the valve includes a blade protruding from the second rotating shaft and housed in the case body, and a long groove provided in the axial direction from an edge of the blade. A long hole provided from one side of the long groove toward one side in the rotation direction of the blade, and a long hole provided from the other side of the long groove toward the other side in the rotation direction of the blade. And a valve valve that is swingably accommodated in the long groove and opens and closes the long hole.

[0011]

According to the first aspect of the present invention, the rotational moment of the opening / closing body attached to the first rotary shaft is provided by a cam mechanism provided coaxially with the first rotary shaft and acting on the elastic means of the first rotation control means. It is possible to create a torque similar to the above or to add an accent, and at the same time, specify the second rotating shaft that rotates together with the first rotating shaft by the fluid damper of the second rotation controlling means that acts on the second rotating shaft. It is possible to create a large rotation torque that cancels out the rotation torque in the rotation direction of.

According to the second aspect of the present invention, a variety of cam torques can be created between the fixed cam and the rotary sliding cam that rotates together with the rotary shaft by pressing against the fixed cam.

According to a third aspect of the present invention, the valve is opened and closed by viscous fluid pushed by the blade rotating together with the second rotary shaft, and the second rotary shaft is moved in a predetermined rotation range by the stopper piece. Only rotate.

According to the present invention, the viscous fluid pushed by the blades in the direction of rotation of the second rotary shaft causes the valve valve to swing, thereby closing or opening the long hole, thereby providing the valve. A one-way type liquid damper is created by forming or closing a viscous fluid passage through a long hole via a valve.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The case where the present invention is applied to an opening / closing body such as a toilet seat or a toilet lid of a Western-style toilet bowl will be described below. However, the present invention is not limited to this embodiment, and various other embodiments are applicable. It can be applied to an opening and closing body.

In FIG. 1, a mounting cylinder 2 provided with a pair of mounting holes 2a (only one of which is shown) is provided at substantially the center of the rear upper surface of a toilet body 1, such as a Western style toilet, on both sides thereof. Attachment portions 2b, 2b projecting rearward are fixed by a pair of attachment bolts 2c, and a hinge case 3 having a tubular shape of a pair of left and right opening / closing devices 4, 4 is provided in each attachment hole 2a. , 3 are removably inserted and fixed. As shown in FIGS. 1 to 3, the fixing means for fixing the hinge cases 3 and 3 to the mounting cylinder 2 has a deformed flange 3 a at one end of the hinge case 3, and A locking projection 3b (FIG. 3) is provided. The deformed flange 3a is fitted into a locking recess 2d provided at the entrance of the mounting hole 2a of the mounting cylinder 2, and the locking projection 3b is provided.
b is locked in the locking groove 2f of the locking piece 2e provided in the mounting hole 2a.

As shown in FIG. 1, the opening and closing devices 4 and 4 are a pair on the left and right, with the left one for the toilet seat and the right one for the toilet lid. However, since the internal structure is the same only in the left-right symmetry, only the opening / closing device 4 on the left side in the figure will be described below. As shown in FIGS. 3 and 4, the opening and closing device 4 includes a first rotation control unit A and a second rotation control unit B provided on the left and right sides of a partition wall 3 c provided in the hinge case 3. Consists of

First, a cam mechanism which is an example of the first rotation control means A will be described. In particular, as shown in FIGS. 5 is rotatably accommodated. The first rotating shaft 5 includes a flange 5a on the outer periphery of which a sealing member 6 such as an O-ring is fitted in contact with the inner peripheral wall 3d of the hinge case 3 from the left end and an elastic means 7 composed of a compression spring on the outer periphery. An annularly wound large diameter portion 5b and a small diameter portion 5c having an elliptical cross section in which the rotary sliding cam 8 is slidably inserted in the shaft are provided. The small diameter portion 5c protrudes into the hinge case 3. Partition wall 3
The bearing hole 3e provided in c. The above-mentioned elastic means 7 is elastically provided between the flange 5a and the rotary sliding cam 8, and urges the rotary sliding cam 8 to slide in one direction (rightward in the figure). The rotary sliding cam 8 has a deformed hole 8a having an elliptical cross-section at the shaft core.
When the small-diameter portion 5c is axially engaged with the first rotary shaft 5, it rotates together with the first rotary shaft 5. Further, as shown in FIGS. 5 to 7, the rotary sliding cam 8 has convex portions 8b, 8b protruding in the axial direction at positions facing the outer peripheral portion.
On one side of the partition wall 3c, as shown in FIGS. 8 to 10, a pair of convex portions 9a, 9a and concave portions 9b projecting in the axial direction at opposing positions on the outer periphery of the one side. A fixed cam 9 having a projection 9c is provided with four projections 9c protruding on the other side, and a locking hole 3 provided in a partition wall 3c as shown in FIGS.
The first rotating shaft 5 is attached by press-fitting into the shaft f.
Is rotatably inserted through the small diameter portion 5c of the
a, 9a and concave portions 9b, 9b
b, 8b.

Next, a fluid damper as an example of the second rotation control means B will be described. As shown in FIGS. 3 and 4 and FIGS. 11 and 12, the second rotating shaft 11 is inserted into the case body 10 which is inserted and locked on the right side of the partition wall 3c of the hinge case 3 so as not to rotate. The second rotary shaft 11 is provided with a pair of valves 12, 12 at opposed positions substantially at the center of the second rotary shaft 11. The valves 12, 12 are constituted by the following members.

That is, as shown in FIG. 5 and FIG. 6, the valves 12, 12 have a pair of blades 13, 13 projecting from the second rotating shaft 11 at an interval of 180 °, and Long grooves 1 provided in the radial direction from the edges of 13, 13
4, 14, and the blade 1 from one side of the long grooves 14, 14.
Elongated holes 15, 15 provided toward one side in the rotation direction of the blades 3, 13, and from the other side of the elongated grooves 14, 14 to the other side in the rotation direction of the blades 13, 13. Cutouts 16, 16 provided to face each other, and recesses 17 on the swinging end side thereof, which are swingably accommodated in the long grooves 14, 14.
a, 17 a provided with valve valves 17, 17.

A pair of stopper pieces 18, 18 project in the radial direction from the inner peripheral wall of the case body 10 and come into contact with the surface of the second rotating shaft 11, so that the inside of the case body 10
Divided. The case body 10 is filled with a viscous fluid 19 such as silicone oil. The portion of the second rotating shaft 11 penetrating from the side wall of the case body 10 and the portion of the first rotating shaft 5 penetrating through the partition wall 3c are, in particular, the first rotating shaft 5 as shown in FIGS. Connecting means 2 consisting of a stopper member 21a and a joint member 21b attached to the body via an attachment screw 20
1 are connected so as to rotate together.

On the side of the first rotary shaft 5 exposed from the hinge case 3, a deformation mounting hole 5d is provided in the center axis direction from the end face, as shown in FIGS. Attachment part 2 for toilet seat or toilet lid in deformed mounting hole 5d
Mounting pins 24 supporting the members 2 and 23 are press-fitted.
The mounting pin 24 has a tapered portion 24a provided at the tip.
Is press-fitted into the tapered hole 5e of the deformation mounting hole 5d, but the stopper member 2a is attached to the first rotary shaft 5 by the mounting screw 20.
The mounting pin 24 may be connected to the first rotating shaft 5 together with 1a. The mounting pin 24 is a deformed shaft portion 24b having a substantially elliptical cross section. The deformed shaft portion 24b and the deformed hole 22a provided in the mounting portion 22 of the toilet seat are inserted and engaged, so that the mounting pin 22 It is configured to rotate. The deformed shaft portion 24b is further fitted with a circular hole 23b of the mounting portion 23 of the toilet lid, but does not rotate with the mounting pin 24 because of its circular shape, and is supported by the mounting pin 24, The deformed shaft portion 24 of the mounting pin 24
It is rotatable around b as a fulcrum. In other words, in the opening / closing device 4 on the right side, when the toilet seat is opened / closed, the first rotary shaft 5 rotates via the mounting pin 24 to operate, but when opening / closing the toilet lid, this is supported by the mounting pin 24. Only the first rotating shaft 5 does not rotate.

As shown in FIG. 1, the deformable mounting hole 5 of the first rotating shaft 5 on the side of the other hinge case 3 on the left side
On the other hand, a circular hole 22b provided in the mounting portion 22 of the toilet seat is axially mounted on the deformed shaft portion 24b of the other mounting pin 24 mounted as described above, The mounting portion 22 of the toilet seat is rotatable with respect to the right mounting pin 24. However, the deformation shaft portion 24b of the mounting pin 24 is adapted to be inserted and engaged with the deformation hole 23a provided in the mounting portion 23 of the toilet lid, and is configured to rotate together with the mounting portion 23 of the toilet lid. I have. That is, the left opening / closing device 4 does not operate at the time of opening / closing the toilet seat because the first rotating shaft 5 does not rotate because the mounting portion 22 is only supported by the mounting pin 24. Therefore, as described above, the opening / closing device 4 on the right side in FIG. 1 is for a toilet seat, and the opening / closing device 4 on the left side is for a toilet lid.

Next, the operation will be described. As shown in FIG. 11, when the toilet seat 25 is in the closed state shown by the imaginary line, the projection 8b of the rotary sliding cam 8 constituting the cam mechanism of the first rotation control means A shown in FIG. Abuts against the convex portion 9a of the fixed cam 9, and the elastic means 7 is in a state of being compressed to the maximum. On the other hand, the valve valve 17 of the fluid damper constituting the second rotation control means B shown in FIG. 11 is in a state where the long hole 15 side is closed. When the toilet seat 25 is opened from this state, the mounting pin 24 with which the mounting portion 22 is engaged is mounted.
The first rotating shaft 5 rotates through the shaft, and the convex portion 8b of the rotary sliding cam 8 that rotates together in the same direction slides toward the fixed cam 9 while falling from the convex portion 9a of the fixed cam 9 toward the concave portion 9b. Move.

On the other hand, the valve valve 17 of the fluid damper of the second rotation control means B is pushed by the viscous fluid 19 by the rotation of the second rotation shaft 11 which rotates in the same direction together with the first rotation shaft 5 to move through the long groove 14. Since it oscillates and falls from the long hole 15 side to the notch 16 side, in addition to the space between the inner peripheral wall of the case body 10 and the blade portion 13, the notch 16
Thus, a path for the viscous fluid 19 that passes through the long hole 15 and to the opposite side of the blade 13 is formed.

Thus, smooth rotation of the first rotary shaft 5 and the second rotary shaft 11 is allowed, and the toilet seat 25 is opened up to 110 °. FIGS. 4 and 12 show this state. Particularly, as shown in FIG. 12, the blade 13 of the second rotating shaft 11 is
The opening operation of 110 ° or more is prevented by contacting the stopper piece 18 of FIG.

The shape of the fixed cam 9 of the cam mechanism is shown in FIG.
As shown in FIG. 13, by further providing a small concave portion 9e from the concave portion 9b, and providing a gentle first slope 9f and a steep second slope 9g which gradually climb from this, as shown in FIGS. 13 and 14, By further reducing the cam torque from the opening angle of the toilet seat 25 of 80 ° to 0 at 90 °, the toilet seat 25
Can be urged in the opening direction to automatically become independent.
From now on, the cam torque is increased again so as to apply the brake toward the full opening angle of 110 ° to absorb the bouncing and bouncing. By implementing in this way, it is possible to give a fine accent in accordance with the rotational moment accompanying the opening operation of the toilet seat.

When closing the opened toilet seat 25, the cam mechanism of the first rotation control means A performs the reverse operation as described above, but as shown in FIGS. Due to the resistance when the convex portion 8b of the rotary sliding cam changes its contact position from the concave portion 9b of the fixed cam to the convex portion 9a from the opening angle of 40 ° against the elasticity of the elastic means 7, the rotational moment of the toilet seat is increased. Is generated in the opposite direction to cancel the
Is prevented from becoming abrupt. On the other hand, in the fluid damper of the second control means B, the valve valves 17, 17 are moved in the long grooves 14, 14 by the second rotating shaft 11 rotating in the same direction together with the first rotating shaft 5 with the closing operation of the toilet seat 25. Swings in the opposite direction,
15, the viscous fluid 19 is forced to flow only through the gap a between the inner circumference of the case body 10 and the blades 13, 13, whereby a damper action occurs, and the cam mechanism described above. And a sudden drop of the toilet seat 25 can be prevented by the combined torque of the fluid damper.

As described above, during the closing operation of the toilet seat 25, the torque acting in the reverse direction of the cam mechanism of the first rotation control means A and the damping action of the fluid damper of the second rotation control means B suddenly cause. It can be closed quietly without falling.

As shown in FIG. 13 and FIG. 14, in the embodiment, when the toilet seat 25 is closed to 80 ° and then slightly depressed and released, a relatively quick operation is performed due to weak cam torque and damper action. At speed, the toilet seat 25 is closed to a closing angle of about 40 °, during which about 2 seconds. After that, the convex portions 8b, 8b of the rotary sliding cam 8 of the cam mechanism are
Abuts against the projections 9a, 9a, and climbs up against the elasticity of the elastic means 7, so that it is slowly closed up to a closing angle of about 10 °, and then further slowly. It took about 5 seconds to close to 0 °.

As described above, the operation time required for opening and closing the toilet seat 25 can be adjusted by the combined torque action combining the cam torque created by the cam mechanism and the damper action of the fluid damper, and the operation can be sharpened. .

The opening and closing device 4 for the left toilet seat 25 has been described above.
However, the opening / closing device 4 for the right toilet lid also opens and closes the toilet lid from the closed position. However, since this toilet lid is not opened and closed as frequently as the toilet seat 25, the toilet seat 25 It is not necessary to give a fine accent to the opening and closing operation as in the case of. Therefore, it is possible to make the shape of the cam provided on the fixed cam simpler. However, since the rotational moment is basically the same as that of the toilet seat, only the cam shape of the fixed cam is different, and the subsequent structure is the same.

[0033]

The present invention is configured as described above.
The following effects can be obtained.

According to the first aspect of the invention, the feeling of the toilet seat and the toilet lid, especially during the closing operation, can be improved.
In addition to eliminating the floating phenomenon at the time of closing, the rotation control means having different properties such as a cam mechanism using an elastic means and a fluid damper means are coaxially arranged to create a composite torque.

According to the second aspect of the present invention, the cam mechanism can create a torque curve approximating the rotational moment curve of the toilet seat or the toilet lid, and the opening and closing operation can be accentuated by devising the shape of the cam. It becomes possible.

According to the third aspect of the invention, the closing operation of the toilet seat and the toilet lid can be braked by the liquid damper, and the rotation of the second rotary shaft prevents the valve from rotating. Thus, the toilet seat and the toilet lid can be prevented from falling too much by being restricted to a predetermined rotation range.

According to the fourth aspect of the present invention, the passage of the viscous fluid is opened and closed by the valve valve swinging in the long groove by the rotation of the second rotary shaft accompanying the opening and closing operation of the toilet seat and the toilet lid. With such a configuration, a damper function can be created.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of an attachment part when attaching a composite torque hinge according to the present invention to a toilet body of a Western style toilet.

FIG. 2 is a partially exploded perspective view of the composite torque hinge according to the present invention.

FIG. 3 is a longitudinal sectional view of a portion of a composite torque hinge according to the present invention.

FIG. 4 is a longitudinal sectional view in a state where the toilet seat is opened up to 90 ° from the state of FIG. 3;

FIG. 5 is a side sectional view of a portion of a second rotation control means of the composite torque hinge according to the present invention.

FIG. 6 is a side sectional view of the second rotation control means in a state where the toilet seat is opened up to 110 ° from the state of FIG. 5;

FIG. 7 is a front view of the rotary sliding cam.

FIG. 8 is a right side view of the rotary sliding cam shown in FIG. 7;

FIG. 9 is a front view of a fixed cam.

FIG. 10 is a left side view of the fixed cam.

FIG. 11 is a development view illustrating the shape of a fixed cam.

FIG. 12 is a torque curve diagram of the composite torque hinge according to the present invention.

FIG. 13 is an explanatory view of the operation of the composite torque hinge according to the present invention.

[Explanation of symbols]

 A first rotation control means (cam mechanism) B second rotation control means (fluid damper) 1 toilet body 3 hinge case 4 opening / closing device 5 first rotation shaft 7 elastic means (compression spring) 8 rotation sliding cam 9 fixed cam 10 Case 11 Second rotary shaft 12 Valve 13 Blade 14 Long groove 15 Long hole 16 Notch 17 Valve valve 19 Viscous fluid 21 Connecting means 21a Stopper member 21b Joint member 25 Toilet seat

Claims (4)

[Claims] 1. A first rotating shaft is rotatably provided inside a hinge case provided with a partition wall so as to penetrate the partition wall, and the first rotation shaft is provided on one side of the hinge case with the partition wall interposed therebetween. A first rotation control means acting on the shaft is provided, and a second rotation control means is provided coaxially on the other side of the hinge case with the partition wall interposed therebetween, and the second rotation control means is provided on the second rotation shaft of the second rotation control means. A compound torque hinge, wherein the first rotation shaft is connected, the first rotation control means is a cam mechanism acting with elastic means, and the second rotation control means is a fluid damper. 2. A cam mechanism, comprising: a fixed cam fixed to a partition wall provided in a hinge case while a rotating shaft is inserted through a center portion; and a cam facing the fixed cam and engaging with the first rotating shaft. 2. The compound torque hinge according to claim 1, wherein the rotary sliding cam is slidable in the axial direction of the first rotary shaft, and elastic means for pressing the rotary sliding cam toward the fixed cam. . 3. A fluid damper, comprising: a case body fixed in a hinge case; a second rotating shaft which is mounted inside the case body and one end of which protrudes from the case body; 2. The valve according to claim 1, wherein the valve is provided, a viscous fluid filled in the case body, and a stopper piece protruding from an inner peripheral wall of the case body and preventing rotation of the valve. 3. The composite torque hinge according to any one of 2. 4. A blade protruding from a second rotary shaft and housed in a case body, a long groove provided in an axial direction from an edge of the blade, and one of the long grooves. And a notch provided from the other side of the long groove toward the other side in the rotation direction of the blade from the other side of the long groove to the one side in the rotation direction of the blade. 4. A valve comprising: a valve valve swingably accommodated in the elongated groove and opening and closing the elongated hole.
A composite torque hinge as described.