JPH0627447B2 - Toilet speed governor - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speed governor for a toilet bowl, which adjusts the speed of a toilet lid or a toilet seat.

(Prior Art) A conventional style toilet bowl is provided with a toilet seat that is rotatably supported by a support shaft arranged in a 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, there has been proposed a speed control device technology that brakes rotation of a toilet seat as a moving body. For example, as proposed in Japanese Patent Publication No. 62-37975,
That is the one that uses an air cylinder or a brake shoe that is linked.

(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, there is a problem that an air noise such as a shoe shoe is generated when air is released from the cylinder during its operation. The link coupling method has a problem that the device is inevitably bulky. Because the torque of about 20kgf-cm is applied to the rotary shaft of the toilet bowl and the toilet seat that are commercially available, each structure must be sturdy when trying to adopt a structure that can withstand this. Because you do not get.

By the way, it is desirable in terms of feeling that the final speed of the moving body, which is controlled to move, is slow. However, in the above apparatus, for example, when the toilet seat is rotated from the vertical position to the horizontal use position, the speed is gradually adjusted as the horizontal position is approached, although the speed is controlled. Is left.

(Means for Solving the Problems) The present invention aims to provide a speed governing device that solves the above-mentioned problems, and is provided on the same axis and rotates in conjunction with movement of a toilet seat and a toilet lid. Of the input shaft, and speed control means that operates following the rotation of each of the input shafts to control the speed of rotation of each of the input shafts, and is disposed between the input shafts and the speed control means. And a speed increasing means for speeding up the rotation of each of the input shafts and transmitting the speed to the speed controlling means, wherein the speed increasing means is a non-circular gear having a one-way transmission clutch and meshing with each other. It is characterized in that the speed increasing ratio of the speed increasing means is changed.

(Operation) When the input shaft rotates, the rotation of the input shaft is transmitted to the speed adjusting means via the speed increasing means to operate this means. The rotation of the input shaft is controlled by the operation of the speed control means. At this time, the speed increasing ratio of the speed increasing means is changed by the non-circular gear and transmitted to the speed adjusting means, and the speed is adjusted while changing the rotation speed of the input shaft.

(Embodiment) In FIG. 1, a toilet seat 2 and a base end portion of a toilet lid 3 are rotatably attached to an upper surface of a rear end of a 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. The speed governor 5 is fixed with mounting screws 7 (see FIG. 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.

2 to 9, the speed governor 5 includes a case 6
And input shafts 8 and 9 provided on the same axis, a part of which protrudes outside the case, a speed control means 10 housed inside the case, a one-way transmission clutch 11, and a non-circular gear pair. 12
And the speed increasing means 13 including. The case 6 includes a case body 6b and a tapping screw 15 which is fitted to the case body 6b.
And a case lid 6c fixed by. In FIG. 2, reference numeral 15a indicates a screw hole formed in the case body.

Bearing hole 6ca formed in the case lid 6c (see FIG. 4)
The tube shaft portion 9a of the input shaft 9 is inserted through the. 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 cut-off portion 9b for stopping rotation is formed on the outer peripheral surface of the projected portion 9c. An engaging hole 3a of the toilet lid 3 formed in a shape complementary to the cross-sectional shape of the protruding portion 9c is fitted so as to be substantially integrated in the rotation direction (FIGS. 8 and 9). See figure). One end of the input shaft 8 has a protruding portion 9 of the input shaft 9.
It is further projected from c, and a cut-off portion 8c for stopping rotation is formed on the protruding portion 8b. Protruding part 8b
The toilet seat 2 having an engagement hole 2a having a complementary shape in its cross-sectional shape is fitted in the housing so as to be substantially integrated in the rotational direction (see FIGS. 8 and 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. The No. 1 gears 16 and 17 may be integrally fixed after being formed separately from the input shafts. The first gears 16 and 17 are partially spiral gears of non-circular gears whose pitch circle gradually opens when they rotate clockwise in FIG. As shown only in FIG. 2, the case body 6b is provided with a stopper portion 6bb for preventing overrun when the first gears 16 and 17 rotate clockwise in FIG. The support shaft 18 formed on the case body 6b has a second gear that meshes with the first gear 16.
A No. 19 gear and a No. 2 gear 20 meshing with the No. 1 gear 17 are spaced from each other and rotatably supported. Support shaft 18 tip 18a
Is fitted to the case lid 6b. A large-diameter third gear 21 is rotatably supported on a support shaft between the second gears 19 and 20. The second gears 19 and 20 are partial spiral gears having a smaller diameter than the first gear. The 1st gears 16 and 17 and the 2nd gears 19 and 20 are disengaged from each other at the end 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, The rotation of the input shafts 8 and 9 is controlled by the speed control means 10.
A non-circular gear pair 12 is formed which releases the transmission to the gear and changes the gear ratio. FIG. 11 shows the gear ratio 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) between the toilet seat 2 and the toilet lid 3, and the toilet seat 2 and the toilet lid 3 are shown in FIG. Shows that the gear ratio becomes higher in an analog manner as it gets closer to the horizontal position, and the meshing of both gears is disengaged near 80 ° at the end of rotation.

A ring is provided on the inner peripheral surface of the cylindrical portions 19a, 20a of the second gears 19, 20.
The coils 22 and 22 are fitted to each other, and the coil springs 23 and 23, which are given the expansion habit, are brought into contact with the inner peripheral surface of the ring. One end of each of the coil springs 23, 23 is the third gear 21.
It is locked to the boss portion 21a, and its free end is brought into contact with the inner peripheral surface of the ring together with the coil portion. The coil springs 23, 23 rotate the second gears 19, 20 when the toilet seat 2 and the toilet lid 3, that is, the input shafts 8, 9 substantially integrated with the toilet seat 2 rotate in the directions shown by solid arrows in FIG. Force the 3rd gear
Communicate to 21. The rotation of the second gears 19, 20 when the toilet seat and the toilet lid rotate in the direction shown by the broken line arrow in FIG. 9 is such that the coil springs 23, 23 are wound and tightened, and the rotational force of the input shaft is the third gear 21. Not transmitted to. That is, the second gear 1
The one-way transmission clutch 11 is composed of 9, 20, the coil springs 23, 23, and the third gear 21. 2nd gear 2
As shown only in FIG. 2, a stopper 24 (only one of which is shown) for determining the rotation blocking position can abut against one side 20b, 19b of 0, 19. This stopper 24 does not necessarily have to be provided.

The large diameter 3rd gear 21 is always meshed with the small diameter 4th pinion 25. The 4th pinion 25 is integrally formed with the worm wheel 26 serving as the 4th gear, and the case body 6b
It is rotatably supported by a support shaft 27 formed in. 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 speed control means 10.
The rotation of the input shafts 8 and 9 is increased by the speed increasing means 13 including the first gears 16, 17 and the second gears 19, 20, the third gear 21, the fourth pinion 25, the worm wheel 26 and the worm 28. It is quickly transmitted to the worm. The speed increasing means 13 speeds up the rotation of the input shaft and transmits it 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 in a bearing hole 30a formed in a braking cup 30 fitted in the case body.
It is rotatably supported by supporting 28b. The bearing block 29 has a groove into which the one end 28a is fitted, and in this groove, the shaft pressing piece 6 formed on the case lid 6c.
d (see FIG. 5) fits and supports the shaft end of the worm. A ratchet 31 having a spreading habit is press-fitted into the worm 28, and a tip end portion of an arm 31a of the ratchet 31 is elastically engaged with an engagement recess 32a formed on one end surface of a friction member receiver 32. The friction member receiver 32 is loosely fitted in the worm 28. The ratchet 31 and the friction member receiver 32 constitute a torque limiter. A retaining ring 33 is engaged with the worm 28, and a friction member 34 made of rubber or a rubber-like product is loosely fitted and arranged between the ring and the friction member receiver 32. As shown in FIGS. 2 and 6, the friction member 34 includes an arm portion 34a 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. ing. A pin 32b formed by axially extending from the friction member receiver 32 is engaged with the arm portion 34a. Therefore, the friction member receiver 32 and the friction member 34 are
By being connected by 32b, they are integrated in the rotational direction. The friction member 34 has a weight portion for the braking cup 30.
It is placed close to the inner surface of the. 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 30 by centrifugal force to brake the rotation of the worm and regulate the speed. The braking applied to the worm 28 acts as braking on the gear train that rotationally drives the worm 28, that is, as speed control for the input shafts 8 and 9. Worm 28, friction member
The speed control means 10 is constituted by the 34 and the braking cup 30. The relationship between the closing speed and the operation angle when the toilet seat or toilet lid is rotated from the vertical position to the horizontal position is shown in Fig. 12, and the speed adjusting means 10 does not work from the vertical position to about 10 °. The closing speed increases at a steep angle, but thereafter, the speed increasing function of the speed adjusting means increases due to the increase in the gear ratio of the first gear and the second gear, so the closing speed becomes gradually slower, and the rotation speed increases. At the end of 80 °, the first gear 1
Since the gears 6, 17 and the second gears 19, 20 are disengaged, the speed governing action is released and the gears quickly 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 direction shown by the solid arrow, the input shaft 9 in FIG.
Rotates in the clockwise direction, and the 1st gear 17 integrated with this rotates in the same direction to rotate the 2nd gear 20 meshing with it in the counterclockwise direction. When the 2nd gear 20 rotates, the coil spring 23 of the one-way transmission clutch 11 is opened and the 2nd gear 20 is rotated.
20 and 3rd gear 21 are integrated. As a result, the third gear
21 accelerates No. 4 gear 25 and worm wheel 26 to rotate them. The worm wheel 26 rotates the worm 28 at a higher speed.

When the operation angle when the toilet lid 3 is closed gradually increases, the gear ratio between the first gear 17 and the second gear 20 gradually increases as shown in FIG. The rotation transmission speed is also high. When the worm 28 rotates at a high speed, the friction member 34 is rotated via the torque limiter.
The centrifugal force causes the weight portion 34b to expand in the centrifugal direction and rub against the inner peripheral surface of the cup 30 to brake the rotation of the worm 28. The braking applied to the worm 28 is transmitted as a speed controlling force to the input shaft 9 via the speed increasing means 13, and brakes 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 rising 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. When the operation angle of the toilet lid 3 advances to around 80 ° at the end of rotation, that is, the toilet lid 3
When it is rotated to the position just before closing, as shown in FIG. 2, the side edge 20b of the second gear 20 abuts against the stopper 24 and its rotation is blocked, and the first gear 17 and the second gear 20 mesh with each other. Is released, 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 is rotated at a high speed without braking for the remaining about 10 °, and is rotated to the horizontal position where it comes into contact with the toilet seat 2 and stops. Even if the toilet lid 3 rotates about 10 degrees without braking, its moving height is small,
It descends without a big shock. This horizontal position is maintained by the toilet lid 3 contacting the cushions 3b and 3b (see FIG. 1) on the toilet seat 2. Toilet seat 2 is toilet body 1
Is abutted on the upper surface of. If the stopper 24 is not provided and the non-circular gear pair 12 is always meshed, the input shaft 9 slowly descends and rotates even after the end of rotation of 80 °.

When the toilet lid 3 which rotates in the closing direction by its own weight is forcedly rotated, the input shaft 9 forcibly rotates the gear train of the speed increasing means 13. At this time, warm
Since 28 is rotated at high speed, it is braked by the friction member 34. However, when the frictional force between the friction member 34 and the cup 30 exceeds a predetermined value, the arm portion 31a of the ratchet 31 bends and the friction member receiving portion is received. The worm 28 is allowed to rotate by disengaging the 32 from the engaging recess 32a. This avoids overloading the speed increasing means 13 including the worm 28. Therefore, the toilet lid 3
It can be rotated without being braked by the speed control means 10, but at this time as well, the meshing relationship between the first gear 17 and the second gear 20 does not change. Therefore, the first gear 17 and the second gear 20 can be logarithmic gears.

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. Mark the toilet lid 3 with a broken line (9th
2), the input shaft 9 rotates counterclockwise in FIG. At the initial stage of rotation of the input shaft, the first gear 17 and the second gear 20 do not mesh with each other, but about 10
When it is rotated by ∘, both gears are engaged with each other to rotate the gear train of the speed increasing means 13. However, the second rotating clockwise
The gear 20 is a coil spring 23 of the one-way transmission clutch 11.
The spring 23 cannot rotate the third gear 21 because the spring 23 (see FIG. 3) acts in a winding and tightening direction. Therefore, since the braking force by the speed governing means 10 does not act on the rotation of the input shaft 9, the toilet lid 3 which is rotated in the opening direction.
Can be opened with a light force. When the toilet lid 3 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 being pressed against the portion 29b, its rotation is blocked, so that rotation of the third gear 21 is blocked. When the rotation of the third gear 21 is blocked, the coil spring 23 and the second gear 20 slip, and the rotation transmission between the input shaft 9 and the speed control means 10 is released. When the toilet lid 3 is rotated to the vertical position, the first gear and the second gear are positioned as shown in FIG. At this time, if the toilet lid 3 rotates too much, the first gear 17 causes its side edge to abut against the stopper 6bc (see FIG. 2) formed on the case body.

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.

Since each input shaft in the above embodiment constitutes one end of the center axis of rotation of the moving body, the speed governor can be easily removed, and replacement of parts due to deterioration of the friction member can be performed very easily. it can.

(Effects of the Invention) As described above, according to the speed governor for a toilet of the present invention, since the speed increasing means including the one-way transmission clutch and the non-circular gear is used, a compact structure can be achieved, and the speed governing speed is increased. Since the rotation speed of each input shaft is changed by the means, it is continuously changed with respect to the two moving bodies of the toilet seat and the toilet lid, so that the speed-regulating action which is continuously changed can be executed and the speed-regulating device having a good feeling. Can be obtained.

[Brief description of drawings]

1 is a perspective view showing an example of the present invention, FIG. 2 is a side view showing an embodiment of the present invention, FIG. 3 is a plan sectional view of the same, and FIG.
FIG. 5 is a vertical sectional front view of the same, FIG. 5 is a partial sectional rear view of the same, FIG. 6 is a bottom view showing an example of speed control means, FIG. 7 is a bottom view showing an example of a torque limiter, and FIG. Is a partial cross-sectional exploded plan view showing an example of the coupling mode of the input shaft and the moving body, FIG. 9 is a side view for explaining the rotating position of the moving body, and FIG. 10 is the moving body placed in the vertical position. FIG. 11 is a side view showing the positions of the input shaft and the members related thereto, FIG. 11 is a diagram showing a change in the gear ratio of the gear train in the embodiment shown in FIG. 2, and FIG. It is a diagram showing a change in moving speed. 2 ... Toilet seat, 3 ... Toilet lid, 8, 9 ... Input shaft, 10 ... Speed adjusting means, 11 ... One-way transmission clutch, 12 ... Non-circular gear pair, 13 ... Speed increasing means.

Claims (1)

[Claims] 1. Two input shafts, which are provided on the same axis line and rotate in conjunction with the movement of a toilet seat and a toilet lid, and the input shafts that operate following the rotation of each of the input shafts. Adjusting means for adjusting the rotation of the input shaft, and speed increasing means arranged between the input shafts and the speed adjusting means for speeding up the rotation of the input shafts and transmitting the speed to the speed adjusting means. And a speed change ratio of the speed increasing means is changed by using a non-circular gear that includes a one-way transmission clutch and meshes with each other as the speed increasing means.