JP2646634B2 - Opening and closing device for toilet seat and toilet lid in toilet bowl - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to an opening / closing device for automatically opening and closing a toilet seat and a toilet lid used in a toilet bowl by a drive unit.

(Prior Art) In a conventional toilet, a user opens and closes a toilet seat and a toilet lid with fingers. However, touching the toilet seat or lid directly with your fingers
It is not hygienic. In particular, toilets installed in places used by an unspecified number of people, such as hospitals, schools, and buildings, are not hygienic and cause users to feel uncomfortable and unclean. So, in recent years,
2. Description of the Related Art Opening and closing devices have been developed that automatically open and close a toilet seat or a toilet lid used in a toilet bowl by a drive motor. This switchgear greatly contributes to hygiene, upsizing of toilets, and ease of use for physically handicapped persons.

By the way, in the above-mentioned switchgear, the actual opening 61-149600
Japanese Patent Application Laid-Open No. 55-148500 and Japanese Utility Model Application Laid-Open No. 55-148500 are known. In the former switchgear, as shown in FIG.
01 is connected to a rotation shaft 104 of a speed reduction mechanism 103 via a clutch 102, and a toilet seat shaft 106 of a toilet seat 105 is connected to the speed reduction mechanism 103 via a leg 107. When the drive motor 100 is driven, the rotation shaft 104 rotates via the clutch 102, the rotation speed is reduced by the reduction mechanism 103, and the toilet seat shaft 106 is further rotated.
It swings around and is opened. 61-
In the opening / closing device according to Japanese Patent No. 149600, when the toilet seat is swung with fingers by mischief or malfunction, the clutch 102 slips and the motor 100 is not overloaded.

Further, in the opening / closing device according to the aforementioned Japanese Utility Model Laid-Open No. 55-148500, a toilet seat-only opening / closing device including a clutch is provided at one end in the length direction of the toilet seat shaft that pivotally supports the toilet seat, Furthermore, a toilet lid dedicated opening / closing device including a clutch is provided at the other end in the length direction of the toilet seat shaft that pivotally supports the toilet lid. Then, the toilet seat shaft is rotated by the toilet seat opening / closing device to open the toilet seat, and the toilet lid shaft is rotated by the toilet seat opening / closing device to open the toilet lid.

(Problem to be Solved by the Invention) In the opening / closing device according to Japanese Utility Model Application Laid-Open No. 61-149600, the clutch 102 is provided.
When the toilet seat is forcibly opened and closed with fingers due to mischief or malfunction, it is merely a slipper to suppress the overload of the motor 100, so the clutch 102 switches between the toilet lid and the toilet seat. is not. Therefore, this opening and closing device has a structure in which only the toilet seat is opened and closed, and there is a problem that the opening and closing of the toilet lid must be performed by the fingers of the user, and it is not sufficient to eliminate discomfort and uncleanness.

Further, in the opening / closing device according to the above-mentioned Japanese Utility Model Publication No. 55-148500, although both the toilet seat and the toilet lid can be opened and closed,
Because both the toilet seat opening and closing device and the toilet seat opening and closing device are both installed, each of the toilet seat opening and closing device and the toilet seat opening and closing device requires a drive motor and a power transmission mechanism, and the number of parts, cost, and occupied space are required. Was disadvantageous in terms of

The present invention has been made in view of the above circumstances, and an object thereof is to switch the power of the output shaft of one driving unit to one of a toilet seat operating shaft and a toilet lid operating shaft via a clutch mechanism, It is an object of the present invention to provide a toilet seat and toilet lid opening / closing device for a toilet that is advantageous in terms of the number of parts, cost, and occupied space.

[Means for Solving the Problems] An opening / closing device for a toilet seat and a toilet lid in a toilet according to the present invention includes a base having a shaft hole provided in the toilet, and an output shaft provided in the base. A drive shaft, a first shaft disposed on one of the toilet seat and the toilet lid, rotatably fitted in the shaft hole of the base, and coaxial with the output shaft, and disposed on the other of the toilet seat and the toilet lid. A second shaft coaxially rotatably arranged in a hollow portion of the first shaft, and a coaxial intervening force between the first shaft, the second shaft, and an output shaft of the driving unit, and the rotational force of the output shaft And a clutch mechanism for switching to one of the first shaft and the second shaft.

In the switchgear according to the present invention, the base is provided on the toilet. The base can be, for example, a box held on a toilet bowl. A shaft hole is formed in the base.

The drive has an output shaft. The drive unit can be formed by a drive motor, a speed reduction mechanism, and an output shaft.

The first shaft has a hollow shape, and is rotatably fitted in a shaft hole of the base. The first shaft is provided on one of the toilet seat and the toilet lid. The first shaft may have a structure integrally formed on one of the toilet seat and the toilet lid, or may have a structure in which a separate member is stopped by a stopper.

The second shaft is disposed coaxially with the first shaft in a hollow portion of the first shaft. The second shaft is provided on the other of the toilet seat and the toilet lid. Note that the second shaft may have a structure integrally formed with the other of the toilet seat and the toilet lid, or may have a structure in which a separate member is stopped with a stopper.

The clutch mechanism is interposed between the output shaft of the drive unit and the first and second shafts, and connects the output shaft of the drive unit and the first shaft, or controls the output of the drive unit. This is a power transmission switching clutch having a function of connecting a shaft and a second shaft. The clutch mechanism
An electromagnet is formed by forming an electromagnet by applying a current to the electromagnetic coil and switching power transmission by the attraction of the electromagnet.

(Operation) In the case where the clutch mechanism connects the output shaft and the first shaft, when the driving unit is driven, the rotational force of the output shaft of the driving unit is transmitted to the first shaft. Therefore, the first shaft rotates, and one of the toilet seat and the toilet lid connected to the first shaft rotates about the first shaft to be opened and closed.

On the other hand, when the clutch mechanism connects the output shaft and the second shaft, the rotational force of the output shaft of the drive unit is transmitted to the second shaft. Therefore, the other of the toilet seat and the toilet lid connected to the second shaft is rotated about the second shaft to be opened and closed.

(Embodiment) An embodiment of the opening / closing device according to the present invention will be described below with reference to FIGS.

(Configuration of Example) As shown in FIG. 4, a toilet seat 2 on which a user sits is disposed on the toilet 1, and a toilet lid 3 is disposed so as to cover an upper part of the toilet seat 2. A box 4 as a base is disposed at the rear end of the toilet 1. The box portion 4 includes a resin base plate 5 fixed to the box mounting portion of the toilet 1, and a base plate 5.
And a resin-made base cover 6 in the shape of a box held in the box.

As shown in FIG. 1, a mounting member 8 is fixed to the base cover 6 by a stopper 7. A thick boss portion 19 is formed in the base cover 6, and a shaft hole 20 is formed in the boss portion 19 so as to penetrate in the horizontal direction.

A hollow toilet lid shaft 21 as a first shaft is integrally connected to a base end 3a of the toilet lid 3 via a rotation preventing structure. Here, the toilet lid shaft 21 is a hollow small-diameter cylindrical portion 22.
And a hollow large-diameter cylindrical portion 23. Large-diameter cylindrical part 23
Is formed as a clutch chamber 23b. An insertion hole 23c is formed at an axial end of the large-diameter cylindrical portion 23. The small-diameter cylindrical portion 22 of the toilet lid shaft 21 is rotatably fitted in the shaft hole 20. Here, the slide of the toilet lid shaft 21 in the axial direction is restricted by the stop ring 24.

A toilet seat shaft 26 as a second shaft is connected to a base end 2a of the toilet seat 2 on which a user sits by being prevented from rotating by a key 27. The toilet seat shaft 26 is formed by a solid shaft portion 28 and a joint portion 29 having a large diameter. The toilet seat shaft 26 is rotatably fitted into the hollow portion of the toilet lid shaft 21 via the sleeve 30 with respect to the toilet lid shaft 21. In the fitted state, the joint portion 29 of the toilet seat shaft 2b is located in the clutch chamber 23b of the toilet lid shaft 21.

The clutch mechanism 32 is of an electromagnetic clutch type, and includes a solenoid housing 33 functioning as a yoke fixed to the mounting portion 8 with a stopper 9, and a solenoid housing.
An electromagnetic coil portion 34 held by the solenoid 33 and a hub 3 functioning as a movable core slidably disposed in the hollow chamber 33a of the solenoid housing 33 in the direction of arrow A and in the direction opposite thereto.
5, a conductive shaft 37 having a joint function, and a coil-shaped spring 41 are provided. Here, the conduction shaft 37 is
a, a shaft 37b, and a joint 37c connected to the shaft 37b. A first friction portion 38 made of a friction material having high friction resistance is provided on one surface of the joint portion 37c, and a second friction material made of a friction material having high friction resistance is provided on the other surface of the joint portion 37c. A unit 39 is provided. Here, the hubs 35 and 36 described above are connected to the transmission shaft via stop rings 35a and 36a.
It is held by a shaft portion 37b of 37. The hubs 35 and 36 sandwich the large-diameter portion 37a of the transmission shaft 37 via the sphere 39k. The spring 41 is disposed in the clutch chamber 23b of the large-diameter cylindrical portion 23 of the toilet lid shaft 21. As shown in FIG. 1, the tip 41a of the spring 41 presses the ring washer 42 by the resilience thereof, and the joint 37c of the transmission shaft 37 is pressed.
The first friction portion 38 is pressed against the joint surface 23a on the inner surface of the large-diameter cylindrical portion 23 of the toilet lid shaft 21. As a result, the normal state is the state shown in FIG. 1, and the joint 37c of the transmission shaft 37 and the toilet lid shaft 21 are connected.

On the other hand, when the electromagnetic coil portion 34 is energized in the state shown in FIG. 1, an electromagnet is formed, and the hubs 35 and 36 functioning as movable iron cores are attracted and slid in the direction of arrow A in the hollow chamber 33a of the solenoid housing 33. Therefore, the large-diameter portion 37a of the conduction shaft 37 sandwiched between the hubs 35 and 36 slides in the same manner, and the second friction portion 39 of the conduction shaft 37 is connected to the joint portion 29 of the toilet seat shaft 26 as shown in FIG. And the conduction shaft 37 and the toilet seat shaft 26 are connected.

The reduction gear 12 includes a gear housing 13 held by a stopper 11 in a solenoid housing 33, a reduction gear group 14 housed in the gear housing 13, and an output shaft on the end side of the reduction gear group 14.
15 and. Here, the output shaft 15 is in the shape of a square rod, and is engaged with the square hole 37e at the tip of the conduction shaft 37 and is prevented from rotating. The drive motor 18 is held on the gear housing 13 by the stopper 16 at the start end of the gear housing 13 of the reduction gear 12, and the motor shaft 18a of the drive motor 18 is engaged with the reduction gear on the start end of the reduction gear group 14. doing. Note that the speed reducer 12 has a function of decreasing the rotation speed of the drive motor 18 and increasing the torque. Here, in the present embodiment, a drive unit is configured by the drive motor 18, the speed reducer 12, and the output shaft 15.

In the assembled state, as shown in FIG.
15, the conduction shaft 37, the toilet lid shaft 21, and the toilet seat shaft 26 are respectively located on the same axis. On the side opposite to the drive motor 18, the toilet seat 2 and the toilet lid 3 are rotatably supported by a shaft (not shown).

(Operation of Embodiment) Next, the operation of the opening / closing device of this embodiment will be described. As described above, in the normal state, the first friction portion 38 is pressed against the joint surface 23a of the toilet seat shaft 21 by the elastic force of the spring 41 as shown in FIG.

First, a case where the toilet lid 3 is opened and the toilet seat 2 is closed will be described. In this case, with the toilet lid 3 and the toilet seat 2 closed, the drive motor 18 is rotated in the forward direction to rotate the motor shaft 18a. Then, the output shaft 15 rotates via the reduction gear group 14, and the transmission shaft 37 rotates. At this time, since the first friction portion 38 and the joint surface 23a of the toilet lid shaft 21 are pressed against each other by the elastic force of the spring 41, the rotation of the transmission shaft 37 is transmitted to the toilet lid shaft 21. Therefore, the toilet lid shaft 21 rotates, the toilet lid 3 rotates upward, and the toilet lid 3 opens. After using the toilet 1, the drive motor 18 and the output shaft 15 are rotated in the reverse direction to rotate the transmission shaft 37 in the reverse direction, rotate the toilet lid shaft 21 in the reverse direction, and move the toilet lid 3 downward. Rotate toilet lid 3
Close.

On the other hand, it may be necessary to open both the toilet lid 3 and the toilet seat 2. In this case, power is supplied to the electromagnetic coil unit 34 via an electric circuit unit (not shown). Then, the hubs 35 and 36 functioning as movable iron cores are sucked and slid in the direction of arrow A, so that the transmission shaft 37 also slides in the direction of arrow A, and the second friction portion 39 of the transmission shaft 37 is connected to the joint 29 of the toilet seat shaft 26. Press against When the drive motor 18 is rotated in the forward direction in this state, the motor shaft 18
The rotational force of a is transmitted to the reduction gear group 14 and the output shaft 15 and transmitted to the toilet seat shaft 26 via the transmission shaft 37, so that the toilet seat shaft 26 rotates, the toilet seat 2 rotates upward, and the toilet seat 2 open. When the toilet seat 2 is thus opened, the toilet seat 2 is lifted up and the toilet lid 3 is automatically opened. After using the toilet 1, the drive motor 18 and the output shaft 15 are rotated in the opposite directions to
Is rotated in the reverse direction, whereby the toilet seat shaft 26 is rotated in the reverse direction, and the toilet seat 2 is rotated downward to close the toilet seat 2.

When closing the toilet lid 3 in addition to the toilet seat 2, the electromagnetic coil unit 34 is turned off after the toilet seat 2 is closed. Then, the first friction portion 38 of the joint portion 37c of the conduction shaft 37 is pressed against the joint surface 23a of the toilet lid shaft 21 by the elastic force of the spring 41, and the first friction portion 38
And the joint surface 23a, whereby the rotational force of the transmission shaft 37 is transmitted to the toilet lid shaft 21, and the toilet lid 3 is closed.

(Effects of Embodiment) As described above, in this embodiment, the switching operation of the clutch mechanism 32 rotates the toilet lid shaft 21 to open and close the toilet seat 2 and rotates the toilet seat shaft 26 to open and close the toilet seat 2. Can be. Therefore, only one drive motor 18 is required as a drive source for opening and closing the toilet seat 2 and the toilet lid 3, which is advantageous in terms of the number of parts, cost, and space.

In this embodiment, the joint 37c of the transmission shaft 37 and the toilet seat shaft 2
The joint 29 of FIG. 6 has a large diameter and a large friction area, and a first friction portion made of a friction material having a high friction resistance.
Since the second friction portion 39 and the second friction portion 39 are provided in the joint portion 37c of the transmission shaft 37, it is effective to transmit the rotational driving force of the output shaft 15 to the toilet seat shaft 26 and the toilet lid shaft 21.

By the way, since the hubs 35 and 36 sandwich the large-diameter portion 37a of the transmission shaft 37 via the stop rings 35a and 36a, the transmission shaft 37
When the hub rotates, the hubs 35 and 36 become rotational resistance, and the transmission shaft 37
May not rotate smoothly. In this respect, in this embodiment, the sphere 39k is interposed between the hub 35 and the large-diameter portion 37a, and a similar sphere 39k is interposed between the hub 36 and the large-diameter portion 37a. Therefore, the rotational resistance is reduced by the rolling of the spherical body 39k, and the transmission shaft 37 can be smoothly rotated.

Further, during the opening / closing operation of the toilet seat 2 and the toilet lid 3, the toilet seat 2 and the toilet lid 3 may be forcibly stopped by hand or the toilet seat 2 and the toilet lid 3 may be forcibly opened and closed due to erroneous operation or mischief of a child. . In this respect, in this embodiment, as shown in FIG. 1, when the first friction portion 38 and the joint surface 23a of the toilet lid shaft 21 are connected, the first friction portion 38 and the joint surface 23a are in a contact state. Slip relatively as it is. Further, as shown in FIG. 2, when the second friction portion 39 and the joint portion 29 of the toilet seat shaft 26 are connected, the second friction portion 39 and the joint portion 29 slide relatively in a connected state. Therefore, the drive motor 18, the reduction gear
12, it is possible to prevent an overload from being applied to a mechanism on the drive unit side such as the output shaft 15.

Further, in the present embodiment, the first friction portion 38 and the second friction portion 39 of the joint portion 37c of the transmission shaft 37 are housed in the clutch chamber 23b of the large-diameter cylindrical portion 23 of the toilet lid shaft 21. Therefore, when cleaning the toilet 1, even if water or the like scatters toward the toilet lid shaft 21, the wall of the large-diameter cylindrical portion 23 performs a water-blocking action, and the water is removed by the first friction portion 38, Touching the second friction portion 39 can be suppressed as much as possible. Therefore, the friction resistance of the first friction portion 38 and the second friction portion 39 can be maintained satisfactorily. In addition, in the present embodiment in which the clutch mechanism 32 and the driving motor 18 are provided on the lateral sides of the toilet seat 2 and the toilet lid 3, urine and the like are less likely to be applied to the clutch mechanism 32 and the driving motor 18, and their durability is reduced. This is advantageous for securing.

Further, in the present embodiment, a coil-shaped metal spring 41, which is a component of the clutch mechanism 32, presses the joint 37c of the transmission shaft 37 via a metal ring washer 42. Therefore, when the joint 37c of the transmission shaft 37 rotates, the metal ring washer 42 and the metal spring
Slip occurs between 41 and the tip 41a. Therefore, even if the rotation angle of the transmission shaft 37 is large, the coil-shaped spring 41 hardly rotates, which is advantageous for protection of the coil-shaped spring 41.

In addition, in the present embodiment, as shown in FIG. 1, the coil-shaped spring 41 is configured to press the entire circumference of the outer peripheral edge of the joint 37c of the transmission shaft 37. Therefore, the joint 37 of the transmission shaft 37
There is an advantage that the first friction portion 38 of c can be uniformly pressed against the joint surface 23a of the toilet lid shaft 21.

In addition, in the present embodiment, as described above, the output shaft 15, the transmission shaft 37, the toilet seat shaft 26, and the toilet lid shaft 21 are located on the same axis, which is advantageous in simplifying the power transmission path.

[Effects of the Invention] According to the opening and closing positions of the toilet seat and the toilet lid according to the present invention, the switching force of the clutch mechanism switches the rotational force of the output shaft of one drive unit to the first shaft or switches to the second shaft. As a driving source for opening and closing the toilet seat and the toilet lid, one drive unit is sufficient, and one drive unit automatically rotates the toilet seat to open the toilet seat or opens the toilet lid. The toilet lid can be turned to open automatically.

Therefore, unlike the conventional device disclosed in Japanese Utility Model Laid-Open No. 55-148500, the toilet seat opening / closing device and the toilet lid opening / closing device do not have to be provided independently, and therefore are advantageous in terms of the number of parts, cost, and occupied space. It is.

[Brief description of the drawings]

1 to 3 show the present embodiment, and FIG. 1 shows a state in which the opening / closing device according to the present embodiment is viewed from above, and shows a state in which the toilet lid shaft and the transmission shaft are connected. FIG.
FIG. 2 is a cross-sectional view showing a state where the toilet seat shaft and the transmission shaft are connected, and FIG. 3 is an enlarged cross-sectional view near the transmission shaft connected to the toilet seat shaft. FIG. 4 is a schematic perspective view of a toilet having an opening / closing device. FIG. 5 is a schematic perspective view of a main part showing a conventional apparatus. In the figure, 1 is a toilet bowl, 2 is a toilet seat, 3 is a toilet lid, 4 is a box part (base), 15 is an output shaft, 18 is a drive motor (drive part), 20 is a shaft hole, and 21 is a toilet lid shaft (No. 1), 26 is a toilet seat shaft (second shaft), 32 is a clutch mechanism, 33 is a solenoid housing, 37 is a conduction shaft, 38 is a first friction portion,
39 denotes a second friction portion, and 41 denotes a spring.

Continuation of the front page (56) References JP-A-64-107722 (JP, A) JP-A-55-91331 (JP, A) JP-A-52-33343 (JP, A) Jpn. , U)

Claims (1)

(57) [Claims] 1. A base having a shaft hole provided in a toilet bowl, a driving unit having an output shaft provided in the base, and being rotated in the shaft hole in the base provided in one of a toilet seat and a toilet lid. A hollow first shaft that is freely fitted and coaxial with the output shaft; a second shaft that is disposed on the other of the toilet seat and the toilet lid and that is rotatably disposed coaxially in the hollow portion of the first shaft. 2 shaft, and the first shaft and the second shaft are coaxially interposed between the output shaft of the drive unit and the output shaft of the drive unit, and the rotational force of the output shaft is one of the first shaft and the second shaft. And an opening / closing device for a toilet seat and a toilet lid in a toilet bowl.