JPH01244729A - Opening and closing device for seat and cover of bowl - Google Patents

Abstract

PURPOSE:To reduce the number of components and an occupying space by switching the power of the output shaft of the driving shaft through a clutch member to either of a seat operating shaft or a bowl cover operating shaft. CONSTITUTION:When a driving motor 18 is rotatedly-driven in a positive direction and a motor shaft 18a is rotated in a condition in which a bowl cover 3 and a seat 2 are closed, an output shaft 15 is rotated, and a transmitting shaft 37 is rotated. The rotation is transmitted to a bowl cover shaft 21, the bowl cover 3 is turned upward, and the bowl cover 3 is opened. After use, the driving motor 18 and output shaft 15 are rotate-drive in a reverse direction, the transmitting shaft 37 is rotated in the reverse direction, the bowl cover shaft 21 is rotated in the reverse direction, the bowl cover 3 is turned downward, and the bowl cover 3 is closed. Since the seat 2 can be opened and closed by rotating the bowl shaft 21 with the switching work of a clutch member 32 in such a way, it is sufficient to install the driving motor 18 by one as a driving source to open and close the seat 2 and bowl cover 3, and advantages on the number of components, cost and space can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an opening/closing device that automatically opens and closes a toilet seat and a toilet lid used in a toilet bowl using a drive unit.

(Prior Art) In conventional toilets, the user opens and closes the toilet seat and toilet lid with their fingers. However, it is not sanitary to directly touch the toilet seat or toilet lid with your fingers. In particular, toilets installed in places used by an unspecified number of people, such as hospitals, schools, buildings, etc., are not sanitary and cause discomfort and a sense of uncleanness to the users. Therefore, in recent years, opening and closing devices have been developed that automatically open and close the toilet seat and toilet lid used in a toilet bowl using a drive motor. This opening/closing device has greatly contributed to hygiene, making toilets more sophisticated, and making them easier for people with physical disabilities to use.

By the way, in the above-mentioned switchgear,
Disclosed in Publication No. 600, Utility Model Application Publication No. 55-14
One disclosed in Japanese Patent No. 8500 is known.

In the former opening/closing device, as shown in FIG. It is connected to the speed reduction mechanism 103. Then, when the drive motor 100 is driven,
A rotating shaft 104 rotates via a clutch 102, and its rotational speed is reduced by a deceleration mechanism 103, and the toilet seat shaft 106 further rotates, whereby the toilet seat 105 swings around the toilet seat shaft 106 and opens. In the above-described opening/closing device according to Utility Model Publication No. 61-149600, when the toilet seat is violently rocked with fingers due to mischief or erroneous operation,
Clutch 102 slips to prevent overload from being applied to motor 100.

Further, in the opening/closing device according to the above-mentioned Japanese Utility Model Publication No. 55-148500, a toilet seat exclusive opening/closing device including a clutch is provided at one end in the length direction of the toilet seat shaft that rotatably supports the toilet seat. Further, a toilet lid opening/closing device including a clutch is provided at the other longitudinal end of the toilet seat shaft that rotatably supports the toilet lid. Then, the toilet seat opening/closing device rotates the toilet seat shaft to open the toilet seat, and the toilet lid opening/closing device rotates the toilet lid shaft to open the toilet lid.

(Problem to be Solved by the Invention) Although the opening/closing device according to the above-mentioned Japanese Utility Model Publication No. 61-149600 is provided with a clutch 102, the clutch 102 can be used to forcibly open/close the toilet seat with fingers due to mischief or erroneous operation. When activated, the clutch 102 is only used to prevent overloading of the motor 100, and therefore the clutch 102 is not designed to switch between the toilet lid and the toilet seat. Therefore, this opening/closing device has a structure that opens and closes only the toilet seat, and there is a problem that the toilet lid must be opened and closed with the user's fingers, causing discomfort and discomfort.
It was not enough to eliminate the feeling of drifting.

Moreover, although the opening/closing device according to the above-mentioned Japanese Utility Model Publication No. 55-148500 can open and close both the toilet seat and the toilet bowl, the opening/closing device for the toilet seat and the toilet lid only open and close. Since both of the 11 devices are installed, a drive motor and a power transmission mechanism are required for each of the toilet seat-specific device and the toilet lid opening/closing device, which is disadvantageous in terms of the number of parts, cost, and space occupied. .

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to switch the power of the output shaft of one drive unit to either the toilet seat actuating shaft or the toilet lid actuating shaft via a clutch member. It is an object of the present invention to provide a toilet seat and toilet lid opening device for a toilet bowl that is advantageous in terms of the number of parts, cost, and occupied space.

[Structure of the Invention] (Means for Solving the Problems) An opening/closing device for a toilet seat and a toilet lid in a toilet bowl according to the present invention includes a base part disposed in the toilet bowl and having a shaft hole, and a base part disposed in the base part and having an output shaft. a driving portion; a hollow first shaft disposed on one of the toilet seat and the toilet lid and rotatably fitted into the shaft hole of the base; and a hollow first shaft disposed on the other of the toilet seat and the toilet lid. A second shaft coaxially and rotatably disposed within the drive unit is interposed between the first shaft, the second shaft, and the output shaft of the drive unit, and the rotational force of the output shaft is transmitted to either of the first shaft and the second shaft. It is characterized by comprising a clutch member that can be switched to one side.

In the opening/closing device according to the present invention, the base is disposed on the toilet bowl. The base can be, for example, a whistle that is held on the toilet bowl. A shaft hole is formed in the base.

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

The first shaft has a hollow shape and is rotatably fitted into the shaft hole of the base. The first shaft is disposed on either the toilet seat or the toilet lid.

The first shaft may have a structure that is integrally formed with either the toilet seat or the toilet lid, or may have a structure in which a separate object is fixed with a stopper.

The second shaft is disposed coaxially with the first shaft within the hollow portion of the first shaft. The second shaft is disposed on the other of the toilet seat and the toilet lid.

The second shaft may have a structure in which it is integrally formed with the other of the toilet seat and the toilet lid, or it may have a structure in which it is secured as a separate piece with a stopper.

The clutch member is interposed between the output shaft of the drive unit and the first shaft and the second shaft, and connects the output shaft of the drive unit and the first shaft, or connects the output shaft of the drive unit and the first shaft. This is a power transmission switching clutch that has the function of connecting the output shaft and the second shaft. The clutch member can be an electromagnetic clutch of a type in which a current flows through an electromagnetic coil to form an electromagnet, and power transmission is switched by the attractive force of the electromagnet.

(Operation) When the clutch member connects the output shaft and the first shaft, when the drive section is driven, the rotational force of the output shaft of the drive section 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 around the first shaft to open and close.

On the other hand, when the clutch member connects the output shaft and the second shaft, the rotational force of the output shaft of the drive section is transmitted to the second shaft. Therefore, the other of the toilet seat and the toilet lid connected to the second shaft is opened and closed by rotating around the second shaft.

(Example) Figures 1 to 4 below show examples of actual droplets of the switchgear of the present invention.
This will be explained with reference to the figures.

(Configuration of Example) As shown in FIG. 4, a toilet bowl 1 has a toilet seat 2 on which a user sits.
A stool M3 is placed so as to cover the top of the toilet seat 2. A whistle part 4 serving as a base is arranged at the rear end of the toilet bowl 1. The whistle part 4 is formed of a resin base plate 5 fixed to a box part attachment part of the toilet bowl 1, and a box-shaped resin base cover 6 held by the base plate 5.

As shown in FIG. 1, a mounting portion 8 is fixed to the base cover 6 with a fastener 7. As shown in FIG. A thick boss portion 19 is formed on the base cover 6, and a shaft hole 20 is formed in the boss portion 19 so as to pass through the shaft hole 20 in the horizontal direction.

A hollow toilet lid shaft 21 serving as a first shaft is integrally connected to the proximal end 3a of the toilet lid 3 via a rotation preventing structure. Here, the toilet lid shaft 21 is formed of a hollow small-diameter cylindrical portion 22 and a hollow large-diameter cylindrical portion 23.

The inside of the large diameter cylindrical portion 23 is a clutch chamber 23b.

An insertion hole 23c is formed at the axial end of the large diameter cylindrical portion 23.

The small diameter cylindrical portion 22 of the toilet lid shaft 21 is rotatably fitted into the shaft hole 20. Here, the toilet lid shaft 21 is restricted from sliding in the axial direction by a stop ring 24.

A toilet seat shaft 26 serving as a second shaft is connected to the base end 2a of the toilet seat 2 on which the user sits, and is prevented from rotating by a key 27. The toilet seat shaft 26 is a solid shaft portion 2
8 and a joint portion 29 having a large diameter. The toilet seat shaft 26 is fitted into the hollow portion of the toilet lid shaft 21 via a sleeve 30 so as to be rotatable relative to the toilet lid shaft 21. In the fitted state, the two joint portions of the toilet seat shaft 2b are located within the clutch chamber 23b of the toilet lid shaft 21.

The clutch member 32 is an electromagnetic clutch type, and includes a solenoid housing 33 which functions as a yaw and is fixed to the above-mentioned mounting portion 8 with a stopper, an electromagnetic coil portion 34 held by the solenoid housing 33, and the solenoid housing 33. A hub 35, 36 that functions as a movable iron core and is arranged so as to be slidable in the direction of the arrow and in the opposite direction within the hollow chamber 33a, and a transmission shaft 37 that has a joint function.
A coil-shaped spring 41 is provided. Here, the transmission shaft 37 includes a large diameter portion 37a, a shaft portion 37b, and a shaft portion 37b.
It is formed by a joint part 37c that is connected to. Joint part 3
7C is provided with a first rfJ friction portion 38 made of a friction material with high frictional resistance, and the other side of the joint portion 37c is provided with a high I2! Three second friction parts made of a friction material with friction resistance are provided. Here, the hubs 35 and 36 described above are held on the shaft portion 37b of the transmission shaft 37 via stop rings 35a and 36a. The hubs 35 and 36 are connected to the large diameter portion 37 of the transmission shaft 37 via the sphere 39.
It is holding a. The spring 4 described above is disposed in the clutch chamber 23b of the large diameter cylindrical portion 23 of the toilet lid shaft 21 described above.
1 is placed. As shown in FIG. 1, the tip 41a of the spring 41 presses the ring washer 42 with its elastic force, and the first frictional portion 38 of the joint portion 37c of the transmission shaft 37 is pressed against the large diameter cylinder of the toilet lid shaft 21. It is brought into pressure contact with the joint surface 23a on the inner surface of the portion 23. As a result, the normal state is
In the state shown in the figure, the joint portion 37C of the transmission shaft 37 and the toilet lid shaft 21 are connected.

On the other hand, when the electromagnetic coil part 34 is energized in the state shown in FIG.
3a, the large diameter portion 37 of the transmission shaft 37 is attracted and slid in the direction of the arrow A, and is therefore held between the hubs 35 and 36.
a slides in the same way, and as shown in FIG.
The transmission shaft 37 and the toilet seat shaft 26 are connected to each other.

The deceleration v112 is connected to the solenoid housing 33 by the stopper 11.
The gear housing 13 held by the gear housing 1
3 and an output shaft 15 on the terminal end side of the reduction gear group 14. Here the output shaft 15
has a square rod shape, and is engaged with a square hole 37e at the tip of the transmission shaft 37 to prevent rotation. The drive motor 1 is connected by a stopper 16 located at the starting end side of the gear housing 13 of the reducer 12.
8 is held in the gear housing 13, and a motor shaft 18a of the drive motor 18 is engaged with a reduction gear on the starting end side of the reduction gear group 14. Note that the reducer 12 functions to reduce the rotational speed of the drive motor 18 and increase the torque. In this embodiment, the drive motor 18, the speed reducer 12, and the output shaft 15 constitute a drive section.

In addition, in the assembled state, as shown in Figure 1, the output shaft 1
5. Transmission shaft 37, toilet lid shaft 21, toilet seat shaft 26
are located on the same axis. Further, 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 the embodiment) Next, the operation of the opening/closing device of this embodiment will be explained. As mentioned above, in the normal state, as shown in FIG.
It is pressed against the joint surface 23a of No. 1.

First, a case will be described in which the toilet lid 3 is opened and the toilet seat 2 is closed. In this case, with the toilet lid 3 and 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 14, and the transmission shaft 37 rotates. At this time, the elastic force of the spring 41 causes the first friction part 38 and the joint surface 23a of the toilet lid shaft 21 to
Since they are in pressure contact with each other, 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 bowl 1, the drive motor 18 and output shaft 15 are rotated in the opposite direction to rotate the transmission shaft 37 in the opposite direction, the toilet lid shaft 21 is rotated in the opposite direction, and the toilet lid 3 is moved downward. Rotate and close the toilet lid 3.

On the other hand, there are cases where it is necessary to open both the toilet lid 3 and the toilet seat 2. In this case, the electromagnetic coil section 34 is energized via the flashing electric circuit section. Then, the hubs 35 and 36 that function as movable iron cores are attracted and slide in the direction of the arrow, and the transmission shaft 37 also slides in the direction of the arrow.
2nd a! The rubbing portion 39 comes into pressure contact with the joint portion 29 of the toilet seat shaft 26.

When the drive motor 18 is rotated in the forward direction in this state, the rotational force of the motor shaft 18a is transmitted to the reduction gear group 14 and the output shaft 15, and then transmitted to the toilet seat shaft 26 via the transmission shaft 37, rotates, the toilet seat 2 rotates upward, and the toilet seat 2 opens. When toilet seat 2 opens like this,
The toilet lid 3 is also automatically opened when lifted by the toilet seat 2. Toilet bowl 1
After using, the drive motor 18 and output shaft 15 are rotated in the opposite direction to rotate the transmission shaft 37 in the opposite direction, thereby rotating the toilet seat shaft 26 in the opposite direction and rotating the toilet seat 2 downward. and close toilet seat 2.

Note that when the toilet lid 3 is to be used in addition to the toilet seat 2, the electromagnetic coil portion 34 is cut off after the toilet seat 2 is closed. Then, due to the elastic force of the spring 41, the 11th!
j The friction part 38 comes into pressure contact with the joint surface 23a of the toilet lid shaft 21 to connect the first friction part 38 and the joint surface 23a, thereby transmitting the rotational force of the transmission shaft 37 to the toilet lid shaft 21,
Close the toilet lid 3.

(Effects of the Embodiment) As explained above, in this embodiment, the switching action of the clutch member 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. You can Therefore, it is sufficient to install one drive motor 18 as a drive source for opening and closing the toilet seat 2 and the toilet M3, which is advantageous in terms of the number of parts, cost, and space.

In this embodiment, the joint part 37C of the transmission shaft 37 and the joint part 29 of the toilet seat shaft 26 have a large diameter to ensure a large friction area. The friction part 39 is connected to the joint part 37G of the transmission shaft 37.
This is effective in transmitting the rotational driving force of the output shaft 15 to the toilet seat shaft 26 and the toilet lid shaft 21.

By the way, the hubs 35 and 36 are the stop rings 35a and 35.
Since the large-diameter portion 37a of the transmission shaft 37 is held between the hubs 37a and 37a, the hubs 35 and 36 provide rotational resistance when the transmission shaft 37 rotates, and there is a risk that the transmission shaft 37 may not rotate smoothly. In this regard, in this embodiment, a spherical body 39 is interposed between the hub 35 and the large-diameter portion 37a, and a similar spherical body 39 is interposed between the hub 36 and the large-diameter portion 37a.

Therefore, the rotational resistance is reduced by the rolling of the three spheres, and the transmission shaft 37 can be rotated smoothly.

In addition, during the opening/closing operation of the toilet seat 2 and toilet M3, the toilet seat 2 and toilet M3 may be forcibly stopped, or the toilet seat 2 and toilet lid 3 may be forcibly opened and closed due to an erroneous operation or a child's mischief. In this regard, in this embodiment, as shown in FIG.
1st r! Joint surface 23a between J rubbing part 38 and toilet lid shaft 21
When these are connected, the first friction portion 38 and the joint surface 23a slide relative to each other while remaining in contact with each other. Moreover, as shown in FIG. 2, the second friction flft! 39 and toilet seat shaft 2
When the two joint portions No. 6 are connected, the second friction portion 39 and the joint portion 29 slide relative to each other while remaining in the connected state.

Therefore, it is possible to prevent overload from being applied to the drive unit side mechanisms such as the drive motor 18, reduction gear 12, and output shaft 15.

Further, in this embodiment, the first friction part 38 and the second friction part 39 of the joint part 37c of the transmission shaft 37 are housed in the clutch chamber 23b of the large diameter cylindrical part 23 of the toilet lid shaft 21. Therefore, even if water or the like is splashed toward the toilet lid shaft 21 side when cleaning the toilet bowl 1, the wall of the large diameter cylindrical portion 23 will act as a water sprayer, and the water will flow to the first friction portion 38 and the first friction portion 38. 2. Touching the friction portion 39 can be suppressed as much as possible. Therefore, the first friction part 38,
The friction resistance of the second friction portion 39 can be maintained favorably.

In addition, in this embodiment, in which the clutch member 32 and the drive motor 18 are provided on the sides of the toilet seat 2 and the toilet lid 3, urine splashes and the like are less likely to come into contact with the clutch member 32 and the drive motor 18, and their durability is improved. It is advantageous for securing.

Furthermore, in this embodiment, a coiled metal spring 41, which is a component of the clutch member 32, is configured to press the joint portion 37c of the transmission shaft 37 via a ring washer 42 made of gold a. Therefore, when the joint part 37c of the transmission shaft 37 rotates, the ring washer 42 of gold aS and the ring washer 42 of gold [
Slippage occurs between the first spring 41 and the tip 418 of the second spring 41 . Therefore, even if the rotation angle of the transmission shaft 37 increases, the coiled spring 41 hardly turns, which is advantageous for protecting the coiled spring 41.

In addition, in this embodiment, as shown in FIG. 1, the coiled spring 41 is configured to press the entire outer circumference of the joint portion 37C of the conduction shaft 37. Therefore, there is an advantage that the first friction part 38 of the joint part 37c of the transmission shaft 37 can be evenly pressed against the joint surface 23a of the toilet lid shaft 21.

In addition, in this 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 toilet seat and toilet lid opening/closing device according to the present invention, the rotational force of the output shaft of one drive unit can be switched to the first shaft or the second shaft by the switching action of the clutch member. Therefore, one drive unit is sufficient as the drive source to open and close the toilet seat and toilet lid, and one drive unit can automatically rotate the toilet seat and open it, or open and close the toilet seat. It can be rotated to automatically open the toilet lid.

Therefore, unlike the conventional device disclosed in Japanese Utility Model Application Publication No. 55-148500, it is not necessary to separately provide a toilet seat opening/closing device and a toilet lid opening/closing device, which reduces the number of parts, cost, and space occupied. It's advantageous.

[Brief explanation of the drawing]

Figures 1 to 3 show this embodiment, and Figure 1 shows the opening/closing device according to this embodiment viewed from above, and a cross section showing the state in which the toilet lid shaft and the conduction shaft are connected. is a diagram,
FIG. 2 is a sectional view showing a state in which the toilet seat shaft and the transmission shaft are connected, and FIG. 3 is an enlarged sectional view of the vicinity of the transmission shaft connected to the toilet seat shaft. FIG. 4 is a schematic perspective view of a toilet bowl with an opening/closing device. FIG. 5 shows a conventional device and is a schematic perspective view of the main parts. In the figure, 1 is the toilet bowl, 2 is the toilet seat, 3 is the toilet lid, 4 is the whistle part (base), 15 is the output shaft, 18 is the drive motor (drive part), 20
is the shaft hole, 21 is the toilet lid shaft (first shaft),
26 is a toilet seat shaft (second shaft), 32 is a clutch member, 33 is a solenoid housing, 37 is a transmission shaft, 3
Reference numeral 8 indicates a first friction portion, 39 a second friction portion, and 41 a spring. Patent applicant Aisin Seiki Co., Ltd.

Claims (1)

[Claims] (1) A base disposed on the toilet bowl and having a shaft hole, a drive section disposed on the base and having an output shaft, and a drive section disposed on one of the toilet seat and the toilet lid that is rotatably fitted into the shaft hole of the base. a hollow first shaft that is fitted together; a second shaft that is disposed on the other of the toilet seat and the toilet lid and is coaxially rotatable within the hollow portion of the first shaft; the first shaft and The clutch member is interposed between the second shaft and the output shaft of the drive unit and switches the rotational force of the output shaft to either the first shaft or the second shaft. Features: A toilet seat and toilet lid opening/closing device in a toilet bowl.