JPH0638781B2 - Speed governor such as toilet bowl - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a speed governor such as a toilet provided with a reciprocating rotatable body, and more specifically, a toilet equipped with a toilet seat or a toilet lid, which can be opened and closed. The present invention relates to a speed control device for a rotating body in a container provided with a lid or a door, a rotatable door, or the like.

(Prior Art) For example, a Western-style toilet has a toilet seat rotatably supported by a support shaft arranged in the horizontal direction. This toilet seat is rotatably provided between a horizontal position in which it abuts against the upper edge of the opening of the toilet body and a vertical position apart from the upper edge of the opening, depending on the state of use of the toilet. ing. Then, if the hand is released in the middle of tilting from the vertical position to the horizontal position, the toilet seat falls and rotates due to its own weight, hits the upper edge of the toilet bowl and makes a large impact sound, or is damaged in the worst case.

In order to deal with such a problem, a technology of a speed governing device that brakes the rotation of the toilet seat has been proposed. For example, Japanese Patent Publication Sho 62-379
As proposed in Japanese Patent Laid-Open No. 75-75, that using an air cylinder or a brake shoe linked to it is that.

(Problems to be Solved by the Invention) Although the above device achieves the intended purpose,
In the case of the system using the air cylinder, since the braking action starts from the time when the toilet seat starts rotating, it takes a long time to move the toilet seat, and there is a problem that a shoe-shoe sound is generated when air is released from the cylinder during the operation. The link coupling method inevitably makes the device bulky. Because the torque of about 20 to 30 kgf-cm is applied to the rotating shaft of the toilet bowl and the toilet seat that are commercially available, if you try to adopt a structure that withstands this, each of the parts will be sturdy. This is because it is unavoidable.

Further, in the above device, when the toilet seat is rotated from the vertical position to the horizontal use position, for example, the braking force acts to the end. In this case, the toilet seat could not be completely lowered due to variations in relative mounting accuracy between the toilet body and the speed governor (often due to variations in the flatness of the pottery toilet bowl and the shape of the fitting hole on the rotating shaft). , It may stop while slightly floating from the top of the toilet bowl. When a person sits down on the toilet seat in such a state, the toilet seat descends, so that there is a problem in that the cushioning mechanism for breaking the corner is broken when the user sits uncomfortable and has a strong seat.

Further, the above problem occurs not only in the toilet bowl, but also in the trash can with the lid, the furniture with the opening / closing lid, the door closer, the door of the refrigerator, the damper for the video cassette holder, and the like.

(Means for Solving the Problem) The present invention has an object of providing a speed governing device for a toilet or the like that solves the above problems, and an input shaft provided substantially integrally with a rotating body and a rotation of the input shaft. Braking means that is driven to operate to brake the rotation of the input shaft, that is, the rotation of the rotating body, and the input shaft disposed between the braking means and the input shaft so that the input shaft moves in the first direction. A one-way transmission clutch that transmits the turning force when rotating to the braking means, and does not transmit the turning force when rotating in the second direction opposite to the first direction to the braking means. A braking release means that is disposed between the input shaft and the braking means and that releases the operation of the braking means during the end period of rotation of the input shaft that rotates in the first direction. Is characterized by.

(Operation) When the rotating body is rotated in the first direction, the input shaft rotates. The rotation of the input shaft is transmitted to the braking means via the one-way transmission clutch to activate this means, thereby braking the rotation of the rotating body. When the rotating body rotates until the end of the rotation period, the brake releasing means operates to release the braking. The rotating body released from the braking action rotates to the position where the rotating body is stopped. On the other hand, when the rotating body is rotated in the second direction, the rotational force transmission to the braking means is cut off by the action of the one-way transmission clutch, so braking is not applied.

(Example) Hereinafter, the present invention will be described in detail based on an example in which the present invention is applied to a speed governor for a toilet seat and a toilet lid that is rotatably attached to a toilet bowl.

In FIG. 1, the toilet seat 2 and the base end of the toilet lid 3 are rotatably attached to the upper surface of the rear end of the toilet body 1. The illustrated example is a toilet bowl with a shower, in which the shaft provided in the operation box 4 supports one end of the rotation center axis of the toilet seat 2 and the toilet lid 3, and the shaft provided in the speed governor 5 (described later) is It supports the other end of its axis. In the speed governor 5, after mounting parts 6a, 6a formed at both ends of the case 6 are placed on the upper surface of the toilet body 1,
It is fixed with a mounting screw 7 (see FIG. 5).

2 to 9, the speed governor 5 includes a case 6
From the input shafts 8 and 9 having a part thereof projected outside the case, the braking means 10 housed inside the case, the one-way transmission clutch 11, the braking release means 12, and the rotation transmission means 13. Has become. In the illustrated embodiment, since the toilet seat 2 and the toilet lid 3 as rotating bodies are speed-controlled respectively, two input shafts 8 and 9 which rotate on the same axis are shown as the input shafts. The case 6 is composed of a case body 6b and a case lid 6c fitted to the case body 6b and then fixed with a tapping screw 15. In FIG. 2, reference numeral 15a indicates a screw hole formed in the case body.

The shaft portion 9a of the input shaft 9 is inserted into the bearing hole 6ca (see FIG. 4) formed in the case lid 6c. The input shaft 8 is inserted through the tube shaft portion 9a, and the base end portion 8a thereof is fitted in the bearing hole 6ba of the case body. The input shaft 9 is projected from the cylindrical portion 6cb of the case lid, and a cutout portion 9b for stopping rotation is formed on the outer peripheral surface of the protruding portion 9c. The projecting portion 9c is fitted with the engaging hole 3a of the toilet lid 3 formed in a shape complementary to the cross-sectional shape of the projecting portion 9c so as to be substantially integrated in the rotational direction (FIGS. 8 and 9). See figure). One end of the input shaft 8 is further projected from the projecting portion 9c of the input shaft 9, and a cut-off portion 8c for stopping rotation is formed on the projecting portion 8b. A toilet seat 2 having an engaging hole 2a having a shape complementary to the sectional shape of the protruding portion 8b is fitted so as to be substantially integrated in the rotational direction (see FIGS. 8 and (See Figure 9).

Input shafts 8 and 9 located in the case 6 are integrally formed with first gears 16 and 17 spaced apart from each other. These No. 1 gears 16 and 17 may be integrally formed after being formed separately from each input shaft. The first gears 16 and 17 are partial spiral gears whose pitch circle gradually opens when they rotate clockwise in FIG. As shown in FIG. 2 only, the case body 6b has
A stopper portion 6bb is formed to prevent overrun when the first gears 16 and 17 rotate in the first direction (clockwise in FIG. 2). A support shaft 18 formed on the case body 6b is rotatably supported by a second gear 19 that meshes with the first gear 16 and a second gear 20 that meshes with the first gear 17 at a distance from each other. The tip 18a of the support shaft 18 is the case lid 6c.
Is fitted to. Support shaft 18 between 2nd gear 19 and 20
A large-diameter No. 3 gear 21 is rotatably supported by.
The second gears 19 and 20 are partial spiral gears having a smaller diameter than the first gear. The first gears 16 and 17 and the second gears 19 and 20 are disengaged from each other at the final stage of rotation (approximately 80 degrees from the vertical position) just before the toilet seat 2 and the toilet lid 3 are placed in the horizontal position, Transmission of the rotation of the input shafts 8 and 9 to the braking means 10 is released, and the braking release means 12 is configured. FIG. 11 shows the gear ratios of the first gears 16 and 17 and the second gears 19 and 20 with respect to the operating angle (opening angle from the vertical position) of the toilet seat 2 and the toilet lid 3, and the toilet seat 2 and the toilet lid 3 are shown in FIG. The gear ratio increases as the position approaches the horizontal position,
It shows that the gears are disengaged at around 0 °.

Rings 22,2 are provided on the inner peripheral surfaces of the cylindrical portions 19a, 20a of the second gears 19,20.
2 is fitted, and coil springs 23, 23 having expansion habit are brought into contact with the inner peripheral surface of this ring.
One ends of the coil springs 23, 23 are locked to the boss portion 21a of the third gear 21, and the free ends thereof are brought into contact with the inner peripheral surface of the ring together with the coil portion. The coil springs 23, 23 are the second gears 19, 20 when the toilet seat 2 and the toilet lid 3, that is, the input shafts 8, 9 substantially integrated therewith rotate in the first direction shown by the solid line in FIG. The rotational force of is transmitted to the third gear 21. When the toilet seat and the toilet lid rotate in the second direction shown by the broken line in FIG. 9, the rotation of the No. 2 gears 19 and 20 is the direction in which the coil springs 23 and 23 are tightened, and the rotational force of the input shaft is No. 3. It is not transmitted to the gear 21. That is, the second gear 19,2
The one-way transmission clutch 11 is constituted by 0, the coil springs 23, 23, and the third gear 21. As shown only in FIG. 2, a stopper 24 (only one of which is shown) for deciding the rotation blocking position can abut against one side 20b, 19b of the No. 2 gear 20,19. The stopper 24 may be formed integrally with the case lid 6c, or a pin or the like separate from the case may be fixed to the case.

The large diameter 3rd gear 21 is always meshed with the small diameter 4th pinion 25. The fourth pinion 25 is integrally formed with a worm wheel 26 as a fourth gear, and is rotatably supported by a support shaft 27 formed on the case body 6b. The tip 27a of the support shaft 27 is fitted to the case lid 6c. The worm wheel 26 always meshes with the worm 28. The worm 28 constitutes a part of the braking means 10. Then, the rotation of the input shafts 8 and 9 depends on the number 1 gears 16,17 and the number 2 gears 19,2.
0, 3rd gear 21, 4th pinion 25, worm wheel 26
The rotation transmission means 13 including the worm 28 and the worm 28 accelerates and transmits the speed to the worm. The rotation transmission means 13 is composed of a speed-up gear train, speeds up the rotation of the input shaft, transmits the rotation to the worm 28, and rotationally drives the worm at a high speed.

The worm 28 has one end 28a supported by a bearing block 29 fitted in the case body 6b, and the other end 28b in a bearing hole 30a formed in a braking cup 30 fitted in the case body.
Is rotatably supported by being supported.
The bearing block 29 has a groove into which the one end 28a is fitted, and the shaft pressing piece 6d (see FIG. 5) formed on the case lid 6c is fitted into this groove to support the shaft end of the worm. . Warm
A ratchet 31 having expansion habit is press-fitted into the opening 28, and the tip of the arm 31a is elastically engaged with an engaging recess 32a formed in one end surface of the friction member receiver 32. The friction member receiver 32 is loosely fitted in the worm 28. The ratchet 30 and the friction member receiver 32 constitute a torque limiter. The operation of this will be described later. Worm 28 has a retaining ring
33 is engaged, and a friction member 34 made of rubber or a rubber-like product is loosely fitted and disposed between the wheel and the friction member receiver 32. This friction member 34 is shown in FIGS.
As shown in the figure, the arm portion 34 extending in three directions from the boss portion
and a weight portion 34b extending from the arm portion along the inner peripheral surface of the cup 30. In the arm portion 34a,
A pin 32b formed by axially extending from the friction member receiver 32
Are engaged. Therefore, the friction member receiver 32 and the friction member 34
And are connected in the direction of rotation by being connected by a pin 32b. The friction member 34 is arranged such that its weight portion is close to the inner peripheral surface of the braking cup 30. When the worm 28 rotates at a high speed, the weight portion 34b of the friction member rubs the inner peripheral surface of the cup by centrifugal force to brake the rotation of the worm. The braking applied to the worm 28 acts as braking on the gear train that rotationally drives the worm 28, that is, braking on the input shafts 8 and 9. The worm 28, the friction member 34 and the braking cup 30 constitute the braking means 10. Fig. 12 shows the relationship between the closing speed and the operating angle when the toilet seat or toilet lid is rotated from the vertical position to the horizontal position.
Since the braking means 10 does not work up to about °, the closing speed rises at a steep angle, but after that, the braking action of the braking means increases due to the increase of the gear ratio, so the closing speed gradually decreases and during the end of rotation period. Around 80 °, the first gear
Since the gears 16, 16 and the second gears 19, 20 are disengaged, the braking action is released and the gears rapidly close. However, since the turning distance after the end of the turning is short, the toilet seat and the toilet lid will not be greatly impacted.

The operation of the embodiment configured as described above is performed when the toilet lid 3 placed in the vertical position (open position) as shown by the chain line in FIG. 9 is rotated to the horizontal position (closed position) shown by the solid line. Will be described as an example. When the toilet lid 3 is in the vertical position, the first
The gear 17 and the second gear 20 are in meshing relation with each other, as shown in FIG.

Now, in FIG. 9, when the toilet lid 3 at the position indicated by the chain line is rotated in the first direction indicated by the solid arrow, the input shaft 9 rotates clockwise in FIG. 10, and the first gear integrated with the input shaft 9 rotates. 17 rotates in the same direction, and the 2nd gear 20 meshing with this rotates in the counterclockwise direction. When the 2nd gear 20 rotates in the first direction, the coil spring 23 of the one-way transmission clutch 11 is expanded to integrate the 2nd gear 20 and the 3rd gear 21. As a result, the 3rd gear 21 becomes the 4th gear 25, the worm wheel.
26 is accelerated and rotationally driven. This warm wheel 26
Rotates the worm 28 at a higher speed.

When the operation angle when the toilet lid 3 is closed becomes gradually larger, the gear ratio between the first gear 17 and the second gear 20 gradually becomes larger, as shown in FIG.
The rotation transmission speed by 13 also increases. When the worm 28 rotates at a high speed, the friction member 34, which rotates via the torque limiter, has its weight portion 34b expanded in the centrifugal direction by the centrifugal force and rubs the inner peripheral surface of the cup 30 to rotate the worm. Brake on. The braking applied to the worm 28 is achieved by the rotation transmission means 13
Is transmitted as a braking force to the input shaft 9 to brake the closing speed of the shaft 9, that is, the toilet lid 3.
Since the rotation of the worm 28 gradually increases in accordance with the change in the gear ratio with the rotation angle of the input shaft 9, the braking force by the friction member 34 and the cup 30 also gradually increases. Therefore, as shown in FIG. 12, the closing speed of the toilet lid 3 increases rapidly until the gear train starts to rise up to an operating angle of about 10 ° at the beginning of closing, but after that, the braking force is greatly effective. As it starts, it gradually changes to a slow one. Toilet lid 3
When the operating angle of the second gear 20 reaches about 80 ° at the end of the rotation, that is, when the toilet lid 3 is rotated just before closing, the side edge 20b of the second gear 20 collides with the stopper 24 as shown in FIG. Accordingly, the rotation thereof is blocked, and the braking release means 12 including the first gear 17 and the second gear 20 operate to disengage the gears from each other, so that the braking force does not act on the input shaft 9. Therefore, the toilet lid 3 which is substantially integrated with the input shaft 9 has about 10 remaining portions.
It rotates at a high speed without braking and rotates to a horizontal position where it comes into contact with the toilet seat 2 and stops. Even if the toilet lid 3 rotates about an angle of about 10 degrees without braking, the height of the movement is slight, so that the toilet lid 3 descends without a large impact. This horizontal position is maintained by the toilet lid 3 contacting the cushions 3b, 3b (see FIG. 1) on the toilet seat 2. Toilet seat 2 is toilet body 1
Is abutted on the upper surface of.

When the toilet lid 3 which rotates in the closing direction by its own weight is forcedly rotated, the input shaft 9 forcibly drives the gear train of the rotation transmission means 13 to rotate. At this time, since the worm 28 is rotated at high speed, the friction member
Although braking by 34 is applied, when the friction between the friction member and the cup 30 exceeds a predetermined value, the arm portion 31a of the ratchet 31 bends, disengages from the engagement recess 32a of the friction member receiver 32, and the worm 28 Allow rotation. This avoids overloading the rotation transmission means 13 including the worm 28. Therefore, the toilet lid 3
Can be rotated without being braked by the braking means 10. At this time, the first gear 17 and the second gear are also rotated.
The meshing relationship with 20 does not change. Therefore, the first gear 17 and 2
A logarithmic gear can be used as the number gear 20.

Next, the operation when the toilet lid 3 placed in the horizontal position (closed position) shown by the solid line in FIG. 9 is rotated toward the vertical position (opened position) shown by the chain line will be described. At this time, the first gear
As shown in FIG. 2, the gear 17 and the second gear 20 are out of mesh with each other. Attach the toilet lid 3 to the dashed arrow (9th
2), the input shaft 9 rotates counterclockwise in FIG. Although the first gear 17 and the second gear 20 do not mesh at the initial stage of rotation of the input shaft, when they rotate about 10 °, both gears mesh and try to rotate the gear train of the rotation transmitting means 13. However, since the second gear 20 that rotates in the second clockwise direction acts in the direction in which the coil spring 23 (see FIG. 3) of the one-way transmission clutch 11 is wound and tightened, this spring acts as the third gear.
21 cannot be rotated. Therefore, since the braking force by the braking means 10 does not act on the rotation of the input shaft 9, the toilet lid 3 rotating in the opening direction can be opened with a light force. When the toilet lid starts to open, the coil spring 23 rotates the third gear 21, but this rotation is immediately blocked. That is, in the worm wheel 26 rotated by the third gear 21 and the fourth pinion 25, the worm 28 engaged with the worm wheel 26 is pushed downward in FIG.
By pressing the lower end portion of the bearing block 29 against the end portion 29a of the bearing block 29, the rotation thereof is blocked.
Is prevented from rotating. When the rotation of the third gear 21 is blocked, the coil spring 23 and the second gear 20 slip, so that the rotation transmission between the input shaft 9 and the braking means 10 is released. When the toilet lid 3 rotates to the vertical position, the first
The gear and the second gear are located as shown in FIG. At this time, when the toilet lid 3 is rotated too much, the first gear 17 has a stopper 6bc whose side edge is formed on the case body (see FIG. 2).
Abut.

The above is the description of the operation of opening and closing the toilet lid 3, but the operation of opening and closing the toilet seat 2 is also the same. In this case, the input shaft 8 and the 1st gear 16 rotate and the 2nd gear that interlocks with this. 16 gear trains rotate. Further, the action when the toilet seat and the toilet lid are simultaneously rotated is the same.

Next, referring to FIG. 13, another embodiment of the present invention will be described. This embodiment is different from the above-mentioned embodiments in that sector gears 160 and 170 are used as the first gear and circular gears 190 and 200 are used as the second gear. Since the other structures are the same, the same reference numerals are used. Only attach. Sector gear
Recesses 160a, 170a (only one of which is shown) are formed in the circumferential direction of the 160, 170, and a positioning protrusion 170b is formed at an edge portion thereof that is elastically deformable. This protrusion 170a
A positioning protrusion 6bd is formed on the case body 6b located on the rotation locus. Sector gears 160,1 shown by solid lines
The rotation position of 70 indicates the final rotation position just before the toilet lid and the toilet seat are placed in the horizontal position, and the tooth portion thereof has the second gear 190,
It shows immediately after disengagement with 200. After this, the sector gears 160, 170 are rotated clockwise to the position where they abut against the stopper 6bb in accordance with the rotation of the toilet seat or toilet lid in the first direction, and mesh with the second gears 190, 200. Held in the removed position. When the input shafts 8, 9 (toilet seats or toilet lids) are rotated and the sector gears 160, 170 in the solid line position are rotated in the second counterclockwise direction, the sector gears mesh with the second gears 190, 200, Rotate this and move toward the broken line. At this time, since the one-way transmission clutch 11 is arranged between the second gear 190, 200 and the third gear 21, the rotation of the second gear is not transmitted to the third gear 21. The sector gears 160, 170 rotated to the position (vertical position) shown by the broken line in FIG. 13 are disengaged from the second gears 190, 200, and their side edges abut against the stopper 6bc. When the rotation of the toilet seat or the toilet lid overruns the vertical position, the projections 170a of the sector gears 160 and 170 pass through the stopper 6bc and are engaged with the positioning projections 6bd to be stopped.

Then, in this embodiment, when the toilet lid or the toilet seat is rotated from the vertical position to the horizontal position in the first direction, the sector gears 160, 170 at the chain line position are rotated clockwise, and the non-meshing angle (approximately 10). After passing through (°), mesh with the second gears 190 and 200 and rotate them. The operating angle is approximately 10 ° from the vertical position
The closing speed of the toilet seat and the toilet lid up to is as shown in Fig. 12, but the angle is about 80 ° from the angle of 10 ° to the end of rotation.
Since the gear ratio between the sector gear and the 2nd gear does not change, the speed up to is almost constant. When the operating angle reaches approximately 80 ° during the final period of rotation, the sector gear and the second gear disengage (see Fig. 13), so the sector gear, that is, the toilet lid and / or the toilet seat is not subjected to the braking force. Rotate. The toilet seat and / or the toilet lid that does not receive the braking force descends due to its own weight and surely contacts the upper surface of the toilet body or the upper surface of the toilet seat.

In the above-described embodiment, the toilet seat and the toilet lid of the toilet are mentioned as the rotating body for speed control, but the present invention controls the speed of the refrigerator door, the building door, the video cassette holder, etc. as the rotating body. Of course, it can be applied as a device. In the illustrated embodiment, the dual input shaft is taken as an example, but the number of input shafts may be one. Further, since the input shaft in the illustrated embodiment constitutes one end of the rotation center axis of the rotating body, the speed governor can be easily removed, and parts replacement due to deterioration of the braking means can be performed very easily. .

(Advantages of the Invention) As described above, according to the speed governing device for a toilet bowl or the like of the present invention, the rotating body can be closed without impact and the braking action by the braking means can be achieved at the end of the rotation of the input shaft. Since it is released, the toilet seat no longer floats from the upper surface of the toilet body, and it does not descend when sitting on the toilet seat,
Usability is improved. Further, when the toilet seat is in a state of being floated from the upper surface of the toilet, if the passenger seats on the toilet seat, the braking means and the gear train may be destroyed, but the toilet seat surely abuts the upper surface of the toilet as in the present invention. Then, the problem does not occur.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a toilet bowl equipped with the speed governor of the present invention, FIG. 2 is a side view showing an embodiment of the speed governor of the present invention, and FIG. 3 is a plan sectional view of the same. 4 is a vertical sectional front view of the above, FIG. 5 is a partial sectional rear view of the same, FIG. 6 is a bottom view showing an example of braking means, FIG. 7 is a bottom view showing an example of a torque limiter, and FIG. The figure is a partial cross-sectional exploded plan view showing an example of the coupling mode of the input shaft and the rotating body, FIG. 9 is a side view for explaining the rotating position of the rotating body, and FIG. 10 is the rotating body placed in the vertical position. FIG. 11 is a side view showing the positions of the input shaft and the members related thereto when it is opened, FIG. 11 is a diagram showing the change of the gear ratio of the gear train in the embodiment shown in FIG. 2, and FIG. And FIG. 13 is a side view showing another embodiment of the present invention. 2,3 …… Toilet seat and lid as rotating body, 8,9 …… Input shaft, 10
…… Brake means, 11 …… One-way transmission clutch, 12 …… Brake release means.

Claims (1)

[Claims] 1. A toilet bowl or the like having a revolvable rotatable body, an input shaft provided substantially integrally with the revolving body, and a rotary shaft of the input shaft which is actuated by the rotation of the input shaft. Braking means for restricting motion, and a rotative force that is disposed between the braking means and the input shaft and rotates when the input shaft rotates in a first direction, to the braking means, The unidirectional transmission clutch, which does not transmit the turning force when rotating in the second direction opposite to the first direction, to the braking means, and is arranged between the input shaft and the braking means. A speed governing device for a toilet bowl or the like, comprising: a brake releasing means for releasing the operation of the braking means during the end period of rotation of the input shaft that rotates in the first direction.