JP3274721B2 - Speed control device for rotating body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a governor to speed the governor of the rotating body of the lid and stool seat, etc. of the toilet bowl.

[0002]

2. Description of the Related Art For example, a Western style toilet is provided with a toilet seat and a toilet lid rotatably supported on a support shaft. The toilet seat and the toilet lid pivot between a closed position in contact with an upper edge of the opening of the toilet main body and an open position apart from the upper edge of the opening of the toilet main body, depending on a usage state of the toilet. It is provided freely.
The toilet seat and toilet lid when released on the way to defeat the closed position from the open position is triggered by impact sound I person out to the toilet on the rim and falls rotated by its own weight, or damaged in the worst case I do.

In view of the above, there are provided a speed control means which operates in accordance with the rotation axis of the rotating body and a speed increasing means for increasing the rotation of the rotation axis. The speed increasing means is formed by using a non-circular gear. There has been devised a speed control device or the like that gradually changes a moving speed of a rotating body by changing a speed ratio.

Incidentally, recent toilets are provided with various cleaning functions, heaters, deodorizing mechanisms, and the like, and these are controlled using a seating sensor or the like. This seating sensor is composed of a light-emitting part and a light-receiving part, and they are arranged opposite to each other in the left-right direction of the toilet, and detects a seat when a person sits on the toilet seat and light from the light-emitting part is blocked. Then, the cleaning mechanism and the like can be operated according to the detection position.

[0005]

However, in the current governor used for the lid of the toilet, etc., the control of the seating sensor is not involved, and the seating sensor is always operated (switch-on). ) State, it operates even when the toilet lid is in the closed state, causing malfunctions of the cleaning mechanism and the like.

[0006]

SUMMARY OF THE INVENTION Accordingly, in the speed governing device for a rotating body which is capable of braking in one direction, the rotating body supported to be openable and closable according to the present invention, the presence of an object is determined in conjunction with the opening and closing of the rotating body. Activating the detecting means for detecting in the open state of the rotating body,
There is provided switch means for stopping the rotating body in a closed state.

[0007]

When the rotating body is opened, the detecting means for detecting the presence of the object is activated by the switch means, and when the rotating body is closed, the detecting means is stopped by the switch means.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a toilet body, and a base end of a toilet seat 2 and a toilet lid 3 are rotatably mounted on a rear end upper surface of the toilet body 1. Further, the toilet body 1 has a washing mechanism (not shown), and the toilet seat 2 and the toilet lid 3 are attached to a shaft (not shown) provided in the cleaning mechanism operation box 4 and a shaft (not shown) provided in the speed control device 5. I support it.

As shown in FIGS. 2 to 5, the speed control device 5 includes a case 6, input shafts 7 and 8 partially protruding from the case 6, and a speed control device stored inside the case 6. It comprises a speed increasing means 10 arranged between the means 9, the input shafts 7, 8 and the speed adjusting means 9.

The case 6 comprises a case body 6a and a case lid 6b which is fixed to the case body 6a with screws or the like. Mounting parts 6c, 6c are formed in the case main body 6a. The mounting parts 6c, 6c are placed in the cleaning mechanism operation box 4 shown in FIG. Is attached to the toilet body 1.

A tube shaft portion 8a of the input shaft 8 through which the input shaft 7 is inserted is inserted into a bearing hole 6ba formed in the case lid 6b. That is, the input shafts 7 and 8 have a biaxial structure located on a coaxial line. At one end 8b of the input shaft 8,
The hinge part 3a of the toilet lid 3 shown in FIG. 1 is coupled so as to rotate integrally with the hinge part 3a. A hinge portion 2a of the toilet seat 2 shown in FIG. 1 is coupled to one end 7a of the input shaft 7 so as to rotate integrally therewith, and a first non-circular gear 70 rotates to the other end 7b of the input shaft 7. They are connected so as to be integrated in one direction.

Now, the description will proceed mainly with reference to FIGS. The shaft portion 70a of the first non-circular gear 70 is
a is supported by a bearing portion 6aa formed in a. A first non-circular gear 80 is integrally connected to the other end 8 c of the input shaft 8.

The speed control means 9 includes a cylindrical braking cup 9a engaged with the case body 6a and a pedestal 9d on the worm 9b.
And a friction member 9c mounted via the. The worm 9b has one end 9ba at the center of the cup 9a,
And respectively is it rotatably supported by a bearing member 9e engaged the other end 9 bb case.

The speed increasing means 10 is a speed increasing gear train in which the above-mentioned first non-circular gears 70 and 80 are the first stage and the worm 9b is the last stage. Since the input shafts 7 and 8 in the present embodiment have a double shaft structure, the speed increasing means 10 is also composed of two series of gear trains halfway.

A common gear train is rotatably supported by a large-diameter third gear 101 rotatably supported by a clutch shaft 100 supported by the case 6b and by a support shaft 102 formed by the case 6a. A fourth gear 103 and a fifth gear 1 rotatably supported by a support shaft 104 formed in the same case.
05 and the worm 9b.

The small-diameter tooth portion 105a of the fifth gear 105 meshes with the large-diameter tooth portion 103a of the fourth gear 103, and the large-diameter tooth portion 105b corresponding to a worm wheel meshes with the worm 9b. The third gear 101 meshes with the small-diameter tooth portion 103b of the fourth gear 103. The fifth gear 105 is provided with a torque limiter (not shown). If an excessive load is applied to the train wheel when the toilet lid 3 and the toilet seat 2 are rotated, the fifth gear 105 slips and rotates to the worm 9b . It does not communicate.

The second non-circular gears 71, 8 which are the second gears in the axial direction with the third gear 101 interposed therebetween are provided on the clutch shaft 100.
1 are rotatably supported. The second non-circular gear 71 meshes with the first non-circular gear 70, and the second non-circular gear 81 meshes with the first non-circular gear 80.

As shown in FIG. 3, between the second non-circular gear 71 and the third gear 101 and between the second non-circular gear 81 and the third gear 101
As shown in FIG.
7 are interposed. These coil springs 106,
Reference numeral 107 has an expanding property in a direction of pressing against the inner peripheral surfaces of the cylindrical portions of the second non-circular gears 71 and 81, and one end of each is locked to the boss 101 a of the third gear 101. Metal cups 108 and 109 are press-fitted into the inner peripheral surfaces of the cylindrical portions of the second non-circular gears 71 and 81, respectively.

The coil springs 106 and 107 constitute a one-way transmission clutch, and are used to rotate the second non-circular gears 71 and 81 when the toilet seat 2 and the toilet lid 3 rotate from the open position to the closed position. It acts in the direction of transmitting the rotation to the third gear 101 and acts so as not to transmit the rotation of the gears 71 and 81 when the toilet seat 2 and the toilet lid 3 are opened.

In FIG. 2, a click-stop projection 72 for positioning the toilet seat 2 at the open position is formed on the non-tooth portion of the second non-circular gear 71. At the bottom of the case body 6a, a locking piece 74 urged in a direction protruding by a coil spring 73 shown in FIG. 3 is provided.

A gear train as a speed increasing means for transmitting the rotation of the toilet seat 2 to the speed adjusting means 9 at an increased speed is a first gear train integrated with the input shaft 7.
Non-circular gear 70, second non-circular gear 71, third gear 101
The gear train, which is constituted by the fifth to fifth gears 105 and the worm 9b and serves as a speed increasing means for increasing the speed of rotation of the toilet lid 3 and transmitting the rotation to the speed adjusting means 9, is a first non-circular shape integrated with the input shaft 8. Gear 80
And the second non-circular gear 81, the third gear 101 to the fifth gear 1
05 and the worm 9b.

First non-circular gear 70 and first non-circular gear 80
And the second non-circular gear 71
And the second non-circular gear 81 have the same tooth profile. Therefore, the shape of each non-circular gear is the first non-circular gear 80 and the second non-circular gear.
The description will be made using the non-circular gear 81, and the description of the first non-circular gear 70 and the second non-circular gear 71 will be omitted.

In FIG. 6, the first non-circular gear 80 has one end in the rotation direction when the input shaft 8 rotates in one direction (the direction in which the toilet lid 3 closes) as indicated by an arrow a. The tooth portion located in the predetermined angle range is the circular tooth portion 80a having the pitch circle diameter r1 and the other end portion is the circular tooth portion 80b having the pitch circle diameter r2 in the predetermined angle range. This is a non-circular gear having a structure in which the tooth portions between the portions become circular tooth portions 80c whose diameter continuously increases from the end portions 80a to 80b. The circular tooth portion 8 at the other end of the first non-circular gear 80
0b is effective in ensuring that the rotation cycle is closed when the toilet lid 3 is placed in the horizontal position , but it is not particularly necessary to make the pitch circles of the same diameter.

On the other hand, the second non-circular gear 81 has a pitch circle diameter r.
1 circular tooth portion 81a and a circular tooth portion 81 having a pitch circle diameter r2.
b and a non-circular tooth portion 81c whose pitch circle diameter gradually increases from the tooth portion 81a toward the tooth portion 81b. The angular speed ratio is changed by meshing of these non-circular gears. The boss 81e of the second non-circular gear 81 has
A projection A that regulates a mounting position of a shield plate described later,
B and C are integrally formed.

The toilet lid 3 is rotatable between an open position (120 °) shown by a two-dot chain line in FIG. 12 and a closed position (0 °) shown by a solid line. It follows and rotates. The first non-circular gear 80 is restricted from rotating in the opening direction by abutting an edge 80d at the other end with a stopper 6ad formed on the case body 6a shown in FIG. However, after the toilet seat 1 is attached to the toilet body 1, the toilet seat 2 is opened in such a manner that the toilet seat 2 leans against the toilet lid 3 which abuts against an external stopper (not shown).
The gear 80 does not collide with d.

The rotation of the second non-circular gear 81 in the closing direction is regulated by abutting an end 81d of the other end with a stopper 6ae formed on the case body 6a. Actually, since the toilet lid 3 abuts on the upper surface of the toilet body 1 before the second non-circular gear 81 is restricted by the stopper 6ae, the rotation of the gear train is not restricted by the stopper 6ae. The first non-circular gear 70 and the second non-circular gear 71 are respectively provided with a stopper 6bd and a stopper 6be
This restricts the position in the opening and closing direction (see FIG. 4).

As shown in FIG. 4, a reed switch 12 and a magnet 1, which constitute a switch means S for controlling the on / off state of a seating detection sensor to be described later, are provided below the case lid 6b.
3 are provided. The reed switch 12 has both ends fixed to the printed board 15 to be positioned by the positioning pins 14 formed on the case lid 6b by soldering. A plurality of lead wires 16 are connected to the substrate 15 from the back side, and these lead wires 16 are taken out of the case through holes 18 formed in the case lid 6b as shown in FIG. Connected to the detection sensor 17.

The magnet 13 is press-fitted into a holding portion 19 provided on the case cover 6b facing the reed switch 12, and has a gap between the magnet 13 and the reed switch 12 so that a shield plate described later can pass therethrough. ing. The magnet 13 is made of a rare earth material.

The shield plate 20 is formed by pressing a thin silicon steel plate or a hollow steel plate, and has a hole 20a formed in the center thereof as shown in FIGS. Is bent downward. Further, a part 20b of the peripheral portion is formed by a second non-circular gear 81.
And extends outward from the boss portion 81e of the boss 81e to form a fan shape having an angle α. The shield plate 20 is fitted between the projections A, B, and C of the second non-circular gear 81 and is mounted on the second non-circular gear 81 (see FIG. 6). Further, a part 20b of the fan-shaped peripheral portion having the angle α enters between the magnet 13 and the reed switch 12 when the second non-circular gear 81 rotates, and interrupts the magnetic force of the magnet 13 by the angle α. That is, the reed switch 12 is turned off.

The position of the shield plate 20 is determined by positioning projections A, B, and C. The position of the shield plate 20 is set in the closed state of the toilet lid 3, that is, in the open position shown in FIG. When a predetermined angle is advanced from 0 °, a position inserted between the magnet 13 and the reed switch 12 is taken between (opening degree 60 °) and the fully open position (120 °).

As shown in FIG. 13, the seating detection switch 17 is a beam sensor disposed in the cleaning mechanism operation box 4, and emits light from the light emitting unit. Detects seating. The seating detection switch 17 is connected to a cleaning mechanism or the like (not shown), and when the seating is detected, the cleaning mechanism or the like can be operated. Also,
The switch 17 is connected to a lead 16 and is deactivated when the reed switch 12 is on, and activated when the reed switch 12 is off.

The operation of the embodiment configured as described above will be described. As shown by the solid line in FIG. 12, when the closed toilet lid 3 is rotated toward the opening position shown by the broken line, the input shaft 8 shown in FIG. 8
0 is rotated in the same direction, and the second non-circular gear 81 meshing with this is rotated clockwise.

The rotation of the second non-circular gear 81 in this direction is a direction in which the coil spring 107 is wound, and this rotation is not transmitted to the third gear 101 which is a common gear. Therefore, the rotation of the input shaft 8 is cut off by the one-way transmission clutch, and the speed adjusting means 9 does not operate, so that the toilet lid 3 can be opened without resistance. At this time, the end portion 80d of the rotated first non-circular gear 80 comes into contact with the stopper 6ad, and the open position thereof is regulated. In this embodiment, the fully open position of the toilet lid 3 is set to 120 °.

When the second non-circular gear 81 rotates clockwise from the initial position shown in FIG. 9, the sector 20b of the shield plate 20 is positioned between the reed switch 12 and the magnet 13 when the sector 20b rotates a predetermined angle. (FIG. 10). Then, the magnetic force of the magnet 13 is cut off,
The reed switch 12 is turned off. This state is maintained intermittently while the shield plate 20 is located between the reed switch 12 and the magnet 13. In other words, sector 2
The reed switch 12 is turned off by the angle of 0b. When the reed switch 12 is turned off, the seat sensor 17 is turned on, and the cleaning mechanism and the like can be operated. In this embodiment, when the toilet lid 3 is opened by 60 °, the reed switch 12 is turned off until 120 °, which is the fully opened position.

When the toilet seat 2 is rotated, the first non-circular gear 70 connected to the input shaft 7 rotates counterclockwise, and
The non-circular gear 81 rotates clockwise, and, like the toilet lid 3, smoothly opens.

Next, the toilet lid 3 is rotated in the closing direction from the fully open position shown in FIG. Then, when the inclination angle of the toilet lid 3 with respect to the closing direction exceeds 90 °, that is, when the toilet lid 3 is inclined in the closing direction, the toilet lid 3 starts rotating by its own weight. As the toilet lid 3 rotates, the input shaft 8 and the first non-circular gear 80 rotate clockwise, and the second non-circular gear 81 rotates counterclockwise. Second
The rotation of the non-circular gear 81 is the third gear 101, the fourth gear 1
The speed adjusting means 9 is operated at the speed increase ratio increased by the third and fifth gears 105 and the worm 9b.

At this time, the coil spring 107 provided in the third gear 101 acts in a direction for transmitting the rotation of this gear, and the worm 9b is driven via a fourth gear and a fifth gear 105 which is a worm wheel. Is driven to rotate at high speed. When the rotation speed of the worm 9b exceeds a predetermined value,
The friction member 9c expands by centrifugal force and rubs against the inner peripheral surface of the brake cup 9a to brake the rotation of the worm 9b. The braking applied to the worm 9b acts as a braking action on the input shaft 8 via the speed increasing means 10, and the toilet lid 3 connected to this shaft is
It becomes a braking force against the rotation of. That is, the toilet lid 3 slowly rotates in the closing direction while receiving the damper action.

The shield plate 20 also rotates with the rotation of the second non-circular gear 81, and retracts from between the reed switch 12 and the magnet 13. Then, the reed switch 12 is turned on by the magnetic force of the magnet 13. In this embodiment, the sector 20b of the shield plate 20
Is located between the reed switch 12 and the magnet 13 up to a rotation angle of 60 ° which is an intermediate position of the toilet lid 3 shown in FIG. That is, the reed switch 12 is in the off state from the opening angle of 120 ° which is the fully open position of the toilet lid 3 shown in FIG. 12 to the opening angle of 60 ° which is the intermediate position, and the opening angle of 0 ° which is the fully closed position from the intermediate position. It is in the ON state during the period. When the toilet lid 3 is rotated by a certain angle and the reed switch 12 is turned on, the seating sensor 17 is deactivated , and a cleaning mechanism (not shown) becomes inoperable .

As described above, when the toilet lid 3 is in the closed state, the seating sensor 17 is inactive, and when the lid 3 is opened by a predetermined angle (60 °), the seating sensor 17 is in operating state. In addition, malfunction of the cleaning mechanism when the toilet lid 3 is closed is prevented.

The reed switch 12 and the magnet 1
3 is fixed to the case cover 6b, and the shield plate 20 that blocks the magnetic force of the magnet 13 is moved between the case cover 6b and the reed switch 12 is turned on and off, so that the operation of the reed switch 12 is stabilized.

Further, a second rotation which rotates with the rotation of the toilet lid 3
Since the non-circular gear 81 is provided with the shield plate 20 for turning the reed switch 12 on and off, the rotation angle of the shield plate 20 can be smaller than the rotation angle of the toilet lid 3, and the shield plate 20 can be made compact.

Although the reed switch 12 is used as the switch means S in this embodiment, the present invention is not limited to this. For example, a Hall element or a micro switch may be used. However, when a Hall element is used, the control circuit becomes complicated, leading to an increase in cost.
When a microswitch is used, it is certain that the space occupied by the lubricating grease scattered in the governing device will be larger than that of the reed switch while taking into consideration the effect on the contact portion of the switch.

[0043]

According to the present invention, when the toilet lid, which is one of the rotating bodies, is closed, the seating sensor is not activated, thereby preventing a malfunction of a washing mechanism or the like attached to the toilet. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a toilet having a toilet lid, which is an example of a rotating body to which a speed control device of the present invention is adopted.

FIG. 2 is a schematic configuration diagram showing the inside of the speed governing device of the present invention.

FIG. 3 is a sectional view of the governing device shown in FIG. 2;

4 is a front view showing a case of the switch means are mounted that governor.

FIG. 5 is a sectional view taken along line II in FIG. 4;

FIG. 6 is a front view showing the shapes of a first non-circular gear and a second non-circular gear.

7 is a front view shielded-plate for turning on and off the reed switch.

FIG. 8 is a sectional view taken along the line II-II in FIG.

FIG. 9 is a configuration diagram showing the relationship between the second non-circular gear and the switch means when the toilet lid is in a closed state.

FIG. 10 is a configuration diagram showing the relationship between the operation of the switch means and the opening angle of the toilet lid.

FIG. 11 is an operation diagram showing a state of switch means when the toilet lid is at a fully open position.

FIG. 12 is a side view showing a rotation range of the toilet lid.

FIG. 13 is a plan view showing a connection state of a seating sensor in a cleaning mechanism operation unit.

[Explanation of symbols]

 Reference Signs List 3 Rotating body 5 Speed control device 17 Detecting means (seating sensor) 12 Reed switch 13 Magnet 15 Substrate 20 Shield plate S Switching means

Claims (1)

(57) [Claims] An apparatus for controlling the speed of a rotating body that is openably and closably supported and that brakes in one direction, wherein a detecting means for detecting the presence of an object in conjunction with the opening and closing of the rotating body is provided. A speed control device for a rotating body having a switch means for operating in an open state and stopping the detection means in a closed state of the rotating body.