WO2020179367A1

WO2020179367A1 - Opening and closing device

Info

Publication number: WO2020179367A1
Application number: PCT/JP2020/005039
Authority: WO
Inventors: 柏熊　一彰; 清水　秀; 岩田　直也
Original assignee: スガツネ工業株式会社
Priority date: 2019-03-07
Filing date: 2020-02-10
Publication date: 2020-09-10
Also published as: JPWO2020179367A1

Abstract

Provided is an opening and closing device that allows a movable body in a closed position to be opened with a small force and allows the movable body in an open position to be closed with a small force. An opening and closing device (1a) comprises a case (20), a slider (18) that is slidably provided on the case (20), a spring (19) that biases the slider (18), a rotating shaft (14) that rotates together with a toilet lid (4), serving as the movable body, between an open position and a closed position, and a transmission mechanism (15, 16). While the rotating shaft (14) is rotating from the open position in the closing direction to a designated position, the transmission mechanism (15, 16) does not allow the slider (18) to slide even if the rotating shaft (14) rotates so that torque in the opening direction due to the spring (19) does not act on the rotating shaft (14). While the rotating shaft (14) is rotating from the designated position in the closing direction to the closed position, the transmission mechanism (15, 16) causes the slider (18) to slide when the rotating shaft (14) rotates so that the torque in the opening direction due to the spring (19) acts on the rotating shaft (14).

Description

Switchgear

The present invention relates to an opening/closing device for opening and closing a movable body such as a toilet lid, a toilet seat, and an upper door.

A toilet lid and toilet seat are attached to the toilet so that it can be opened and closed. An upper opening door is attached to the cabinet so that it can be opened and closed. Movable bodies such as toilet lids, toilet seats, and upper doors rotate about a horizontal axis between the open and closed positions. The closed position of the movable body is held by its own weight moment.

　When the movable body is heavy, it is not easy to open the movable body in the closed position. In order to solve this problem, Patent Document 1 discloses an opening/closing device that facilitates opening/closing of a toilet lid or a toilet seat. The opening/closing device of Patent Document 1 includes a case, a rotating shaft, a slider, and a spring. A case is attached to the toilet bowl. The case is provided with a rotating shaft that rotates with the toilet lid or seat. A cam is connected to the rotating shaft. The cam is configured to slide a slider provided on the case when the axis of rotation rotates. Further, the case is provided with a spring that presses the slider against the cam.

According to the switchgear of Patent Document 1, the elastic force of the spring is converted into the torque acting on the rotating shaft by the cam as the transmission mechanism. The cam is configured so that a spring-based torque in the opening direction (that is, an assist force) acts on the toilet lid or toilet seat in the closed position. Therefore, the toilet lid or the toilet seat in the closed position can be opened with a light force.

JP-A-11-32945

However, in the opening/closing device of Patent Document 1, there is a problem that the torque in the opening direction is applied by the spring not only when the movable body such as the toilet lid or the toilet seat is in the closed position, but also when it is in the opened position. .. Therefore, the movable body in the open position cannot be closed with a light force.

Therefore, an object of the present invention is to provide an opening/closing device capable of opening a movable body in a closed position with a light force and closing the movable body in an open position with a light force.

In order to solve the above problems, one embodiment of the present invention provides a case, a slider slidably provided in the case, a spring for urging the slider, and a movable body together with an open position and a closed position. Even if the rotating shaft rotates, the rotating shaft rotates and the rotating shaft rotates so that torque in the opening direction by the spring does not act on the rotating shaft while the rotating shaft rotates from the open position to the predetermined position in the closing direction. The slider rotates when the rotating shaft rotates so that the torque in the opening direction by the spring acts on the rotating shaft while the rotating shaft rotates in the closing direction from the predetermined position to the closing position without sliding the slider. And a transmission mechanism for sliding.

According to the present invention, the movable body in the closed position can be opened with a light force, and the movable body in the open position can be closed with a light force.

It is an appearance perspective view of a Western-style toilet using the switchgear of a 1st embodiment of the present invention. FIG. 2A is a vertical cross-sectional view of the Western-style toilet bowl cut at the opening/closing device portion, and FIG. 2B is an enlarged view of portion b of FIG. 2A. It is a disassembled perspective view of the switchgear of this embodiment. FIG. 4A is a vertical cross-sectional view of the switchgear of the present embodiment, and FIG. 4B is an enlarged view of part b of FIG. 4A. It is a side view of a Western-style toilet (FIG. 5(a) shows the open position of the toilet lid, FIG. 5(b) shows a predetermined position of the toilet lid, and FIG. 5(c) shows the closed position of the toilet lid). It is a longitudinal cross-sectional view of the switchgear of this embodiment (FIG. 6(a) shows the open position of the rotary shaft, FIG. 6(b) shows the predetermined position of the rotary shaft, and FIG. 6(c) shows the closed position of the rotary shaft. ). It is a vertical cross-sectional view of the switchgear of the second embodiment of the present invention (FIG. 7 (a) is an opening position of a rotating shaft, FIG. 7 (b) is a predetermined position of the rotating shaft, and FIG. 7 (c) is a rotating shaft. Shows closed position). It is a longitudinal cross-sectional view of the switchgear of 3rd Embodiment of this invention (FIG.8(a) is an open position of a rotating shaft, FIG.8(b) is a predetermined position of a rotating shaft, FIG.8(c) is a rotating shaft. Shows closed position). It is a longitudinal cross-sectional view of the switchgear of 4th Embodiment of this invention (FIG. 9(a) is an open position of a rotating shaft, FIG.9(b) is a predetermined position of a rotating shaft, FIG.9(c) is a rotating shaft. Shows closed position). It is a longitudinal cross-sectional view of the switchgear of 5th Embodiment of this invention (FIG.10(a) is an open position of a rotating shaft, FIG.10(b) is a predetermined position of a rotating shaft, FIG.10(c) is a rotating shaft. Shows closed position). It is a vertical sectional view of the switchgear of the sixth embodiment of this invention.

Hereinafter, the switchgear according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the opening/closing device of the present invention can be embodied in various forms, and is not limited to the embodiments described in this specification. This embodiment is provided with the intention of making it possible for those skilled in the art to fully understand the scope of the invention by sufficiently disclosing the specification.
(First embodiment)

FIG. 1 shows a Western-style toilet 2 that uses the opening/

closing devices

1a and 1b according to the first embodiment of the present invention. In addition, below, although the example which uses the opening/

closing apparatus

1a, 1b of this embodiment for the Western style toilet bowl 2 is demonstrated, the use of the opening/

closing apparatus

1a, 1b of this embodiment is not limited to the Western style toilet bowl 2. The opening/

closing devices

1a and 1b of the present embodiment can also be used in cabinets having upper opening doors, mechanical devices, and the like.

As shown in FIG. 1, one left and one

switchgear

1a and 1b are provided on the upper surface of the rear part of the toilet bowl 3. The opening/closing device 1a and the opening/closing device 1b are bilaterally symmetrical. 4 is a toilet lid as a movable body, and 5 is a toilet seat. The opening/

closing devices

1a and 1b allow the toilet lid 4 and the toilet seat 5 to be opened and closed with respect to the toilet bowl 3.

2(a) is a vertical cross-sectional view of the Western-style toilet 2 cut at the opening/

closing devices

1a and 1b, and FIG. 2(b) is an enlarged view of part b of FIG. 2(a).

Sockets

6a and 6b are attached to the

attachment holes

3a and 3b of the toilet bowl 3 (see FIG. 3). The

switchgear

1a and 1b are detachably attached to the

sockets

6a and 6b. Each

socket

6a, 6b comprises a socket body 8 having a flange 8a and a nut 9 screwed onto the socket body 8 (see FIG. 3). By sandwiching the upper surface portion 3c of the toilet 3 with the

packings

11 and 12 between the flange 8a of the socket body 8 and the nut 9, the

sockets

6a and 6b are attached to the toilet 3. The case bodies 21 (see FIG. 3) of the opening/

closing devices

1a and 1b are inserted into the

sockets

6a and 6b. The case body 21 is snap-fixed to the hook 8b of the socket body 8. Instead of attaching the opening/

closing devices

1a and 1b to the toilet bowl 3, they may be attached to an automatic flushing device (not shown).

As shown in FIG. 2B, the

switchgear

1a, 1b is provided with a rotating shaft 14 that is oriented in the horizontal direction so as to be rotatable. The rotating shaft 14 is rotatably supported by a bearing 28 provided on the case 20 (the case body 21 and the cover 22). A protrusion 28a is formed on the inner surface of the bearing 28 (see FIG. 3). The rotating shaft 14 is formed with a circumferential groove 14a into which the protrusion 28a is fitted (see FIG. 3). This prevents the rotating shaft 14 from coming off in the axial direction.

At one end of the rotating shaft 14, a deformed shaft portion 14b having a pair of flat surfaces and having an oval cross section is formed (see FIG. 3). The attachment portion 4a of the toilet lid 4 is formed with a deformation hole 4a1 that matches the deformation shaft portion 14b. Therefore, the rotating shaft 14 rotates with the opening and closing of the toilet lid 4. The rotary shaft 14 is inserted into a circular mounting hole 5a1 provided in the mounting portion 5a of the toilet seat 5. The rotating shaft 14 serves as a support shaft for opening and closing the toilet seat 5, but does not rotate together with the toilet seat 5. In this embodiment, the rotating shaft 14 is rotated together with the toilet lid 4, but the rotating shaft 14 may be rotated together with the toilet seat 5 or may be rotated together with the toilet lid 4 and the toilet seat 5. May be.

FIG. 3 shows an exploded perspective view of the switchgear 1a. The opening/closing device 1 a includes a case 20, a rotary shaft 14, a transmission mechanism 17, a slider 18, a spring 19, and a linear damper 23. The transmission mechanism 17 includes an arm 15 and a link 16. Since the switchgear 1b is symmetrical with the switchgear 1a, the description thereof will be omitted.

The case 20 includes a case body 21 and a cover 22. The case body 21 includes a substantially tubular body portion 21a and a substantially box-shaped head portion 21b. The cover 22 covers the head 21b of the case body 21. The cover 22 is fixed to the head portion 21b of the case body 21 by a fixing means such as a pin 25. A space for accommodating the rotary shaft 14, the bearing 28, the arm 15, and the link 16 is formed between the head portion 21 b and the cover 22. A flange 22a that hides the flange 8a of the socket body 8 is integrally formed at a lower portion of the cover 22.

An arm 15 is fitted on the rotating shaft 14. The arm 15 is arranged between the pair of bearings 28. An arc groove 14c is formed between the pair of circumferential grooves 14a of the rotating shaft 14. A protrusion 15b that fits into the arc groove 14c is formed on the inner surface of the hole 15a of the arm 15. As shown in the vertical sectional view of FIG. 4B, the central angle α of the arc groove 14c is larger than the central angle β of the protrusion 15b. A gap g is formed between the wall 24a at one end of the arc groove 14c and the protrusion 15b. The central angle of the gap g is γ. The rotating shaft 14 is rotatable about the rotating shaft 14 by the gap g with respect to the arm 15.

As shown in FIG. 3, the arm 15 has a substantially cylindrical main body 15-1 having a hole 15a, and a pair of side plate portions 15 that protrudes radially from the main body 15-1 and are integrated with the main body 15-1. -2. A contact portion 15c is integrally formed with the side plate portion 15-2 of the arm 15. As shown in the vertical sectional view of FIG. 4A, the arm 15 is biased in the opening direction by the spring 19. When the contact portion 15c of the arm 15 comes into contact with the cover 22 as a stopper, the standby positions of the arm 15 and the slider 18 are held.

As shown in FIG. 3, one end of a link 16 is rotatably connected to the arm 15 via a shaft 26. One end of the link 16 is inserted between the side plate portions 15-2 of the arm 15. The other end of the link 16 is rotatably connected to the slider 18 via a shaft 27. The other end of the link 16 is inserted between the side plate portions 18-2 of the slider 18.

The slider 18 is slidably inserted into the body 21a of the case body 21. The slider 18 is guided by the annular inner surface of the body portion 21a. The slider 18 includes a bottom portion 18-1 and a pair of side plate portions 18-2 formed integrally with the bottom portion 18-1.

The spring 19 is housed in the body portion 21 a of the case body 21. As shown in FIG. 4A, the spring 19 is arranged between the slider 18 and the step portion 21 a 1 on the inner surface of the body portion 21 a of the case body 21. The spring 19 biases the slider 18 upward. When the arm 15 is in the standby position shown in FIG. 4A, the spring 19 is compressed, and the standby positions of the arm 15 and the slider 18 are held by the elastic force of the spring 19.

As shown in FIG. 3, the linear damper 23 is arranged inside the spring 19. The linear damper 23 is a known one including a cylinder 23a and a rod 23b. The cylinder 23a is filled with fluid. A piston (not shown) is provided at one end of the rod 23b. A braking force is generated as the piston moves in the cylinder 23a. A return spring (not shown) is provided inside the cylinder 23a. The return spring returns the rod 23b to the protruding position. As shown in FIG. 4A, the linear damper 23 is interposed between the slider 18 and the bottom portion 21c of the case body 21. When the slider 18 slides downward, the linear damper 23 is compressed and a braking force is generated. A gap may be provided between the slider 18 and the linear damper 23 at the standby position of the slider 18 shown in FIG.

The effects of the

switchgear

1a and 1b of the present embodiment will be described below. FIG. 5 shows a side view of the Western style toilet 2. FIG. 6 shows a vertical sectional view of the opening/closing device 1a. In these figures, (a) shows an open position, (b) shows a predetermined position, and (c) shows a closed position.

As shown in FIG. 5(a), at the open position of the toilet lid 4, the opening angle θ1 of the toilet lid 4 is larger than 90°. The opening position of the toilet lid 4 is held by its own weight. As shown in FIG. 6A, when the toilet lid 4 is in the open position, the rotary shaft 14 is also in the open position. The opening position of the rotating shaft 14 is held by the wall 24b at the other end of the arc groove 14c of the rotating shaft 14 coming into contact with the protrusion 15b of the arm 15 (see FIG. 4B).

As shown in FIG. 5(b), at a predetermined position of the toilet lid 4, the opening angle θ2 of the toilet lid 4 is smaller than 90° and larger than 0°. While the toilet lid 4 rotates from the open position shown in FIG. 5A to the predetermined position shown in FIG. 5B, the toilet lid 4 passes through the vertical plane. As shown in FIG. 6B, when the toilet lid 4 is at the predetermined position, the rotary shaft 14 is also at the predetermined position. While the rotating shaft 14 rotates in the closing direction from the open position shown in FIG. 6A to the predetermined position shown in FIG. 6B, the arm 15 and the slider 18 are held at the standby position. Since there is a gap g between the rotary shaft 14 and the arm 15 in the open position shown in FIG. 6(a), the rotary shaft 14 moves from the open position shown in FIG. 6(a) to that shown in FIG. 6(b). It freely rotates to the specified position indicated by the gap g. That is, while the rotating shaft 14 rotates from the open position shown in FIG. 6A to the predetermined position shown in FIG. 6B in the closing direction, the rotating shaft 14 has a torque (that is, an assist force) in the opening direction due to the spring 19. ) Does not work, and the transmission mechanism 17 (that is, the arm 15 and the link 16) does not slide the slider 18. Therefore, the toilet lid 4 in the open position can be closed with a light force.

As shown in FIG. 6B, when the rotary shaft 14 rotates to a predetermined position, the wall 24a (see FIG. 4B) at one end of the arc groove 14c of the rotary shaft 14 comes into contact with the protrusion 15b of the arm 15, The arm 15 rotates in the closing direction together with the rotation shaft 14. When the arm 15 rotates in the closing direction together with the rotating shaft 14, the slider 18 slides downward via the link 16. Since the slider 18 is urged by the spring 19, torque in the opening direction acts on the rotating shaft 14 due to the elastic force of the spring 19. That is, while the rotating shaft 14 rotates from the predetermined position shown in FIG. 6B to the closing position shown in FIG. 6C in the closing direction, a torque in the opening direction by the spring 19 acts on the rotating shaft 14. However, this torque is smaller than the moment of gravity of the toilet lid 4. Therefore, the toilet lid 4 rotates to the closed position due to its own weight moment. The impact when the toilet lid 4 is closed is mitigated by the linear damper 23.

The torque acting on the rotating shaft 14 in the opening direction gradually increases as the rotating shaft 14 rotates from a predetermined position to a closed position. This is because the downward movement amount of the slider 18 gradually increases as the rotary shaft 14 rotates from the predetermined position shown in FIG. 6B to the closed position shown in FIG. 6C. At the closed position shown in FIG. 6 (c), the torque acting on the rotating shaft 14 in the opening direction is maximized. Therefore, the toilet lid 4 in the closed position can be opened with a light force.
(Second embodiment)

FIG. 7 shows a vertical sectional view of a switchgear 31a according to a second embodiment of the present invention. 7A shows the open position of the rotary shaft 14, FIG. 7B shows the predetermined position of the rotary shaft 14, and FIG. 7C shows the closed position of the rotary shaft 14. The case main body 21, the cover 22, the rotary shaft 14, the arm 15, the link 16, the slider 18, the spring 19, and the linear damper 23 have the same basic configuration as that of the opening/closing device 1a of the first embodiment. And its description is omitted.

In the opening/closing device 1a according to the first embodiment, the abutting portion 15c of the arm 15 is brought into contact with the cover 22 to hold the standby position of the arm 15 and the slider 18. On the other hand, in the switchgear 31a of the second embodiment, the standby positions of the arm 15 and the slider 18 are held by bringing the flange 18a provided on the slider 18 into contact with the stopper 21a2 of the case body 21. An annular stopper 21a2 protruding inward is integrally formed on the annular inner surface of the body portion 21a of the case body 21. A flange 18a is integrally formed on the outer surface of the slider 18. The slider 18 is urged upward by a spring 19, and the flange 18a of the slider 18 comes into contact with the stopper 21a2 of the case body 21, so that the slider 18 is held in the standby position at the upper end. Since the arm 15 is connected to the slider 18 via the link 16, the arm 15 is also held at the standby position.

Also in the opening/closing device 31a of the second embodiment, while the rotating shaft 14 rotates from the open position shown in FIG. 7A to the predetermined position shown in FIG. 7B in the closing direction, the spring 19 is attached to the rotating shaft 14. Torque in the opening direction due to does not work. Therefore, the toilet lid 4 in the open position can be closed with a light force. While the rotating shaft 14 rotates in the closing direction from the predetermined position shown in FIG. 7B to the closing position shown in FIG. 7C, a torque in the opening direction by the spring 19 acts on the rotating shaft 14. Therefore, the toilet lid 4 in the closed position can be opened with a light force.
(Third Embodiment)

FIG. 8 shows a vertical cross-sectional view of a switchgear 32a according to a third embodiment of the present invention. 8A shows the open position of the rotary shaft 14, FIG. 8B shows the predetermined position of the rotary shaft 14, and FIG. 8C shows the closed position of the rotary shaft 14. The case main body 21, the cover 22, the rotary shaft 14, the arm 15, the link 16, the slider 18, the spring 19, and the linear damper 23 have the same basic configuration as that of the opening/closing device 1a of the first embodiment. And its description is omitted.

In the opening/closing device 1a of the first embodiment, a gap g is provided between the rotating shaft 14 and the arm 15, whereas in the opening/closing device 32a of the third embodiment, a gap is provided between the arm 15 and the link 16. g is provided. The rotating shaft 14 and the arm 15 are prevented from rotating, and the arm 15 rotates together with the rotating shaft 14. An elongated hole 16a is formed at the upper end of the link 16. The shaft 26 of the arm 15 is fitted into the elongated hole 16a. The standby position of the slider 18 is determined by the slider 18 contacting a stopper (not shown) of the case main body 21 or by exhausting the stroke of the spring 19 and the linear damper 23.

Also in the opening/closing device 32a of the third embodiment, the spring 19 is attached to the rotary shaft 14 while the rotary shaft 14 rotates from the open position shown in FIG. 8A to the predetermined position shown in FIG. 8B in the closing direction. Torque in the opening direction due to does not work. Therefore, the toilet lid 4 in the open position can be closed with a light force. While the rotating shaft 14 rotates in the closing direction from the predetermined position shown in FIG. 8B to the closing position shown in FIG. 8C, a torque in the opening direction by the spring 19 acts on the rotating shaft 14. Therefore, the toilet lid 4 in the closed position can be opened with a light force.
(Fourth Embodiment)

FIG. 9 shows a vertical sectional view of a switchgear 33a according to a fourth embodiment of the present invention. 9A shows an open position of the rotary shaft 14, FIG. 9B shows a predetermined position of the rotary shaft 14, and FIG. 9C shows a closed position of the rotary shaft 14. Since the basic configurations of the case body 21, the cover 22, the rotating shaft 14, the arm 15, the link 16, the slider 18, the spring 19, and the linear damper 23 are substantially the same as those of the switchgear 1a of the first embodiment, the same reference numerals are given. And its description is omitted.

In the opening/closing device 1a of the first embodiment, a gap g is provided between the rotary shaft 14 and the arm 15, whereas in the opening/closing device 33a of the fourth embodiment, a gap is provided between the link 16 and the slider 18. g is provided. The rotating shaft 14 and the arm 15 are prevented from rotating, and the arm 15 rotates together with the rotating shaft 14. An elongated hole 16b is formed at the lower end of the link 16. The shaft 27 of the slider 18 is fitted in the elongated hole 16b. The standby position of the slider 18 is determined by the slider 18 coming into contact with a stopper (not shown) of the case body 21, or by using up the strokes of the spring 19 and the linear damper 23.

Also in the opening/closing device 33a of the fourth embodiment, the spring 19 is attached to the rotary shaft 14 while the rotary shaft 14 rotates from the open position shown in FIG. 9A to the predetermined position shown in FIG. 9B in the closing direction. Torque in the opening direction due to does not work. Therefore, the toilet lid 4 in the open position can be closed with a light force. While the rotating shaft 14 rotates in the closing direction from the predetermined position shown in FIG. 9B to the closing position shown in FIG. 9C, a torque in the opening direction by the spring 19 acts on the rotating shaft 14. Therefore, the toilet lid 4 in the closed position can be opened with a light force.
(Fifth Embodiment)

FIG. 10 shows a vertical cross-sectional view of a switchgear 34a according to a fifth embodiment of the present invention. 10A shows the open position of the rotary shaft 14, FIG. 10B shows the predetermined position of the rotary shaft 14, and FIG. 10C shows the closed position of the rotary shaft 14. The basic structure of the case body 21, the cover 22, the rotary shaft 14, the arm 15, the link 16, the slider 18, the spring 19, and the linear damper 23 is substantially the same as that of the opening/closing device 33a of the fourth embodiment, and therefore the same reference numerals are given. And its description is omitted.

The opening/closing device 34a of the fifth embodiment has a gap g between the link 16 and the slider 18, as in the opening/closing device 33a of the fourth embodiment. In the opening/closing device 33a of the fourth embodiment, the elongated hole 16b is provided in the link 16, whereas in the opening/closing device 34a of the fifth embodiment, the elongated hole 18b is provided in the slider 18. The switchgear 34a of the fifth embodiment also has the same effect as the switchgear 33a of the fourth embodiment.
(Sixth Embodiment)

FIG. 11 shows a vertical cross-sectional view (closing position of the toilet lid 4) of the opening/closing device 35a according to the sixth embodiment of the present invention. Since the basic configurations of the case body 21, the cover 22, the rotating shaft 14, the spring 19, and the linear damper 23 are substantially the same as those of the switchgear 1a of the first embodiment, the same reference numerals are given and the description thereof will be omitted.

In the opening/closing device 1a of the first embodiment, the transmission mechanism 17 for converting the rotation of the rotary shaft 14 into the slide of the slider 18 is composed of the arm 15 and the link 16. In the switchgear 35a of the sixth embodiment, the transmission mechanism is composed of the cam 36.

A cam 36 is fitted on the rotary shaft 14. On the inner surface of the hole 36 a of the cam 36, a protrusion 36 b that fits in the circular arc groove 14 c of the rotating shaft 14 is formed. The relationship between the arc groove 14c and the protrusion 36b is the same as the relationship between the arc groove 14c and the protrusion 15b shown in FIG. That is, the rotary shaft 14 is rotatable about the rotary shaft 14 by the gap g with respect to the cam 36 at the standby position.

A roller 37 is rotatably provided on the slider 18. The cam 36 contacts the roller 37 of the slider 18. The spring 19 presses the roller 37 of the slider 18 against the cam 36.

Since there is a gap g between the rotary shaft 14 and the cam 36, while the rotary shaft 14 rotates from the open position to the predetermined position in the closing direction, the rotary shaft 14 has a torque (that is, an assist force) in the open direction by the spring 19. ) Does not work and the cam 36 does not slide the slider 18. Therefore, the toilet lid 4 in the open position can be closed with a light force.

While the rotating shaft 14 rotates in the closing direction from the predetermined position to the closing position, the cam 36 rotates in the closing direction together with the rotating shaft 14, and the slider slides downward by the cam 36. Since the slider 18 is urged by the spring 19, torque in the opening direction acts on the rotating shaft 14 due to the elastic force of the spring 19. Therefore, the toilet lid 4 in the closed position can be opened with a light force.

It should be noted that the present invention is not limited to being embodied in the above embodiments, and can be modified into various embodiments without departing from the scope of the present invention.

For example, in the above embodiment, the user of the Western style toilet opens and closes the toilet lid, but the drive device may open and close the toilet lid. For example, the drive device includes a motor, a driving gear provided on the motor, and a driven gear provided on the rotating shaft, and rotates the motor to open and close the toilet lid. Since the toilet lid can be opened and closed with a light force, the output of the motor can be reduced.

In the above-described embodiment, the rotating shaft is solid, and the rotating shaft is rotatably supported by the bearings.However, the rotating shaft is hollow, and the rotating shaft is rotatably supported by a pin passing through the rotating shaft. Good.

In the above-described embodiment, the arm and the rotary shaft are separate bodies, but when the arm and the rotary shaft rotate together as in the third to fifth embodiments, the arm and the rotary shaft may be integrated. Further, in the third to fifth embodiments, the movable body is connected to the rotating shaft, but the movable body may be connected to the arm.

This specification is based on Japanese Patent Application No. 2019-041821 filed on Mar. 7, 2019. All this content is included here.

1a, 1b, 31a, 32a, 33a, 34a, 35a... Opening/closing device 3... Toilet bowl 4... Toilet lid (movable body)
5... Toilet seat 14... Rotating shaft 15... Arm (transmission mechanism)
16... Link (Transmission mechanism)
17 ... Transmission mechanism 18 ... Slider 19 ... Spring 20 ... Case 21 ... Case body (case)
22... Cover (case)
23... Linear damper 36... Cam (transmission mechanism)
g... gap

Claims

A case,
A slider slidably provided on the case,
A spring for urging the slider,
A rotating shaft that rotates between the open position and the closed position together with the movable body,
While the rotating shaft rotates from the open position to the predetermined position in the closing direction, the slider does not slide even when the rotating shaft rotates so that torque in the opening direction by the spring does not act on the rotating shaft,
A transmission mechanism that slides the slider when the rotating shaft rotates so that the torque in the opening direction by the spring acts on the rotating shaft while the rotating shaft rotates in the closing direction from the predetermined position to the closing position; ,
A switchgear equipped with.
The opening/closing device according to claim 1, wherein the slider is held at a standby position by a stopper while the rotating shaft rotates from the open position to the predetermined position.
The transmission mechanism includes an arm into which the rotation shaft is fitted, and a link connected to the arm and the slider.
A gap is provided between the rotary shaft and the arm so that the rotary shaft can rotate from the open position to the predetermined position with respect to the arm at the standby position. The switchgear according to 2.
The transmission mechanism includes an arm that rotates with the rotation axis, and a link that connects the arm and the slider.
At least one between the arm and the link or between the link and the slider is arranged so that the rotary shaft can rotate from the open position to the predetermined position with respect to the slider in the standby position. The switchgear according to any one of claims 1 to 3, wherein a gap is provided.
The transmission mechanism includes a cam into which the rotating shaft is fitted,
A gap is provided between the rotary shaft and the cam so that the rotary shaft can rotate from the open position to the predetermined position with respect to the cam in the standby position. The switchgear according to 2.
The opening/closing device according to any one of claims 1 to 5, wherein a linear damper for braking the slider is provided in the case.
The switchgear according to any one of claims 1 to 6, wherein the movable body is a toilet lid and / or a toilet seat.