JPH0620478Y2 - Opening and closing mechanism for toilet seat and toilet lid - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an opening / closing mechanism for a toilet seat and a toilet lid provided in a seated flush toilet bowl.

[Conventional technology]

It is common practice to attach only a toilet seat or a toilet seat and a toilet lid to a seat-type flush toilet so that it can be opened and closed. For these toilet seats and lids, the simplest structure is one in which the base ends thereof are connected to the toilet body by a hinge mechanism.

In this hinge mechanism, the base end portions of the toilet seat and the toilet lid are connected to the hinge portion of the toilet body by a shaft such as a pin. The toilet seat and the toilet lid are integrally connected to the pin or rotatable, and are freely rotatable with respect to the hinge portion of the toilet body.

However, in the free rotation by the pin, when the toilet seat and the toilet lid that have been opened are closed, for example, if the hands are released from them, they will fall naturally. Therefore, a striking sound is generated between the toilet body and the toilet body, and special attention must be paid when using at night. Further, not only the sound but also the frequent impact of the toilet seat and the toilet lid on the toilet body propagates to each member and causes rattling of the hinge portion, which inevitably leads to deterioration of durability.

To solve such a problem, instead of free rotation of the toilet seat and the toilet lid, a structure has been adopted in which a resistance is applied to the rotation of the hinge mechanism when these are closed and the hinge mechanism operates gently. For example, the applicant has already been
What was described in the specification and drawing filed as No. 88910 is mentioned as an example.

In this structure, a coil spring is provided around the axis of the hinge mechanism, and the elastic repulsive force acts in the direction opposite to the direction of closing the toilet seat and the toilet lid. By using this elastic means such as a coil spring, even if you release your hand while closing the toilet seat and the toilet lid, the elastic repulsive force of the coil spring buffers a sharp drop, and the degree of impact on the toilet body is reduced. It can be reduced.

There is also a viscous body or the like which gives resistance to rotation of the hinge shaft.

[Problems to be solved by the device]

However, when the resistance due to elasticity or viscosity is used, the resistance is substantially constant with respect to the operation from the standing state of the toilet seat and the toilet lid to the closing thereof. On the other hand, in the period immediately after the toilet seat and the toilet lid start to tilt from the upright state, the rotation moment around the hinge is small and rises as the angle of lying on the toilet body increases.

In this way, the torque acting on the hinge changes,
Optimum operation is impossible if the resistance given around the hinge is constant. For example, if the resistance value is much smaller than the maximum torque generated, the cushioning capacity is substantially zero for the toilet seat and the toilet lid immediately before closing. On the contrary, if the resistance value is equal to or larger than the maximum torque, the time from the standing state to the closing time becomes long, which is a problem in practical use.

Further, when the viscous body is used as the resistance means of the hinge, it also acts as a resistance in the opening direction instead of acting as a resistance in the closing direction. Therefore, in order to raise the toilet seat and the toilet lid, a large force is required as compared with the conventional free-rotating type, and there is a difficulty in terms of usability.

For such a problem, it is effective to provide an opening / closing mechanism having a variable torque function capable of coping with a torque change around the hinge. However, the conventional variable torque device used for the opening / closing mechanism of the toilet seat and the toilet lid has a complicated structure and a large capacity. For this reason, in particular, the type that can be housed in a casing such as a sanitary washing device attached to the toilet body cannot be installed in some cases and cannot be applied to many types of products.

Therefore, the present invention aims to solve the above-mentioned problems of the conventional structure and provides an opening / closing mechanism capable of improving the usability of the toilet seat and the toilet lid.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is capable of integrally rotating a mounting shaft to be inserted into each of the seats of the toilet seat and the toilet lid with respect to one of the toilet seat and the toilet lid and with respect to the other. A casing with a built-in resistance mechanism is arranged on the toilet side, which is connected with relative rotation freely, and the tip side of the mounting shaft is inserted to give resistance to the mounting shaft when the toilet seat and the toilet lid rotate in the closing direction from their upright postures. In the opening / closing mechanism, the resistance mechanism includes a hollow-structured joint that receives a tip side of the mounting shaft, and the resistance load source of the resistance mechanism connects the joint to the mounting shaft and the joint. A space is provided between the joint and the seat, which allows the joint to rotate in a certain angle range with respect to the rotation of the mounting shaft when the toilet seat and the toilet lid are closed from the upright position, and is integrally rotatable thereafter. Characterized in that gave the relationship Zaisa vertical section was.

〔Example〕

Hereinafter, the features of the present invention will be specifically described with reference to the embodiments shown in the drawings.

FIG. 1 is a partially cutaway plan view showing an essential part of an opening / closing mechanism in which the base ends of a toilet seat and a toilet lid are connected, and FIG. 2 is a view taken along the line II of FIG.

In this embodiment, as shown in FIG. 9, a sanitary washing device B having a washing function is provided in the toilet body A, and an opening / closing mechanism is arranged in the casing thereof. Then, as shown in FIG. 10, the left and right sides of the toilet seat 1 and the toilet lid 2 are connected to the sanitary washing device B. That is, toilet seat 1
A pair of mounting seats 1a, 2a connected to the opening / closing mechanism M are formed on the left and right at the respective base ends of the toilet seat 2 and the toilet lid 2. The seats 1a, 2a and the mounting shaft 3 form the toilet seat 1 and the toilet lid 2 respectively. Is connected to the opening / closing mechanism M.

As shown in FIG. 3 (a), the mounting shaft 3 is a rod made of synthetic resin with a reduced diameter, and its cross section orthogonal to the axis is
As shown in FIG. 3 (b) (a cross section taken along the line II-II in FIG. 3 (a)), it has a substantially oval shape with straight lines and curved lines. Then, a concave portion 3a which is point-symmetric with respect to the center of the cross section is formed on the peripheral surface of the portion which is deviated from the center in the axial direction toward the tip side.

Mounting seats 1a, 2 for the toilet seat 1 and the toilet lid 2 through which the mounting shaft 3 is inserted
The cross-sectional shape of each insertion hole 1b, 2b of a is
It differs as shown in FIG. 4 depending on the arrangement on the left and right. That is, the mounting seats 1a, 2a on the right side in FIG. 10 are shown in FIGS.
In this case, the insertion hole 1b on the toilet seat 1 side is circular with the arc surface of the mounting shaft 3 as a radius, and the insertion hole 2b of the toilet lid 2 has an oval cross section into which the mounting shaft 3 is fitted. Further, FIGS. 4 (c) and (d) show the case of the left mounting seats 1a and 2a, and conversely, the toilet seat 1
The insertion shaft 1 is fitted with the mounting shaft 3, and the insertion hole 2b of the toilet lid 2 has a circular cross section.

Due to the cross-sectional shape of such insertion holes 1b, 2b, on the right side,
The toilet seat 1 rotates freely around the mounting shaft 3, and the toilet lid 2 mounts on the mounting shaft 3.
Rotate with. On the other hand, on the left side, the toilet seat 1 rotates integrally with the mounting shaft 3, and the toilet lid 2 rotates independently of the mounting shaft 3.

The opening / closing mechanism M mainly includes the casing 4 fixed to the base B-1 of the sanitary washing device B. As shown in FIG. 5 (a), a supporting boss B-2 for receiving the fixing piece 4a provided on the casing 4 is formed at a predetermined position on the base B-1 and its upper end is provided with a hole 4b of the fixing piece 4a. Is fitted to. Further, the support boss B-2 is provided with an elastic sleeve 5 which receives the lower surface of the fixed piece 4a and has a cushioning function. Then, the casing 4 has its fixed piece 4a fixed to the support boss B-2 by the screw 4c and the washer 4d.

Thus, by disposing the sleeve 5 having a cushioning function between the lower surface of the fixed piece 4a and the base B-1, the entire opening / closing mechanism M can be elastically supported with respect to the sanitary washing device B. Further, since the upper end of the support boss B-2 is fitted into the hole 4b of the fixed piece 4a, the positioning at the time of assembly can be simplified.

As is clear from FIG. 5 (b), the casing 4 has a double pipe structure in which an annular inner layer wall 6 is formed. A slit 6a running in the axial direction of the casing 4 is cut at two upper and lower portions of the inner layer wall 6, and a protrusion 6b having a circular vertical cross section is axially projected at the center of the inner end wall of the casing 4.

Furthermore, inside the casing 4, as shown in FIG.
A rotor 7 that gives resistance to the rotation of the toilet seat 1 and the toilet lid 2 transmitted from the mounting shaft 3 and a joint 8 that connects the mounting shaft 3 to the opening / closing mechanism M are arranged.

The rotor 7 provides a resistance when the toilet seat 1 and the toilet lid 2 are closed, and functions as a resistance mechanism capable of setting a gentle operation. That is, the rotor 7 has a double-pipe structure having a two-layer wall that is embedded between the inner peripheral wall of the casing 4 and the inner layer wall 6 and the inner peripheral side of the inner layer wall 6, and has a tubular shape at the center of the inside. The rib 7a is formed so as to be coaxial with the casing 4. Then, an O-ring 7b is provided between the casing 4 and the joint 8, and the inner peripheral wall and the inner layer wall 6 of the casing 4 are provided.
The interior and exterior walls of the are isolated from the outside, and grease or the like is enclosed inside. This grease is filled in a large area between the entire inner layer wall 6 and the inner peripheral wall of the casing 4 and the rotor 7,
The rotor 7 with respect to the casing 4 depends on the viscosity of the grease.
Acts as a resistance to rotation.

The tip of the joint 8 is inserted inside the rib 7a of the rotor 7, and the joint 8 and the rotor 7 can freely rotate with respect to each other. The outer diameter of the rib 7a is equal to the outer diameter of the joint 8 on the tip end side, and metal rings 9a and 9b are integrated at the portions joined to the ends of the rib 7a. These rings 9a, 9b are also set to have the same outer diameter as the rib 7a, and a coil spring 10 is fitted in the middle portion of the joint 8 from the base end of the rib 7a. The joining by the coil spring 10 is used as a clutch mechanism. There is.

As shown in Fig. 6 (a), the coil spring 10 is left-handed (helix-shaped spirally wound counterclockwise about the axis of the spring). It is incorporated in the mechanism M. The heat-treated wire made of steel or the like that constitutes the coil spring 10 has a flat cross section. Further, in FIG. 10, the opening / closing mechanism M located on the right side is right-handed (wound spirally in the clockwise direction around the axis of the spring) as shown in FIG. 6 (b).
The coil spring 10 is incorporated.

By providing these coil springs 10 in the opening / closing mechanism M, when the toilet seat 1 or the toilet lid 2 and both of them are raised, the rotation of the mounting shaft 3 is not transmitted to the rotor 7.
That is, in the case of the opening / closing mechanism M on the left side of FIG. 1, the mounting shaft 3 rotates clockwise when viewed from the center side of the toilet seat 1 and the toilet lid 2,
The coil spring 10 is loaded with an acting force opposite to the winding direction. As a result, the inner diameter of the coil spring 10 expands, the torque transmission between the joint 8 and the rotor 7 slips, and the rotation from the mounting shaft 3 to the rotor 7 is not transmitted. On the other hand, in the case of the opening / closing mechanism M located on the right side in FIG. 10, when the toilet seat 1 and the toilet lid 2 are opened, the mounting shaft 3 rotates counterclockwise when viewed from the center side thereof. Then, since the coil spring 10 is applied with the acting force in the direction opposite to the winding direction, slippage is similarly caused due to the enlargement of the inner diameter, and rotation cannot be transmitted.

FIG. 7 (a) is a joint 8 taken along the line III-III in FIG.
FIG.

The joint 8 is formed with an insertion hole 8a in the axial direction into which the tip of the mounting shaft 3 is inserted. The insertion hole 8a has an opening cross-sectional shape that allows the mounting shaft 3 having a substantially oval cross section to freely rotate around its axis by a constant angle. That is, a curved portion having the same shape as the circular arc portion of the mounting shaft 3
8b and a pair of fan-shaped straight line portions 8c whose central portions are constricted, and the mounting shaft 3 is provided with a certain angle of play around its axis as shown in FIGS. 7 (b) and (c). You can Therefore, even if the mounting shaft 3 rotates within the angular range included in this play, the rotation of the mounting shaft 3 is not transmitted to the joint 8. Then, when the linear portion of the mounting shaft 3 comes into contact with the linear portion 8c of the insertion hole 8a (FIGS. 7B and 7C), the joint 8 rotates together with the rotation of the mounting shaft 3. .

Further, a restraining cap 11 of the mounting shaft 3 is detachably provided outside the casing 4 so as to be coaxial with the joint 8. As shown in FIGS. 1 and 2, the restraint cap 11 is an annular body having a hook 11a that engages with a claw 4e protruding from the peripheral surface of the casing 4.

Inside the restraint cap 11, FIG. 8 (a) (IV-IV in FIG. 1)
As shown in the sectional view taken along the line), the recess 3a of the mounting shaft 3
A pair of restraint pieces 12 for restraining the peripheral surface of the roller and a roller piece 12 that is rotatably incorporated into the restraint piece 12 to minimize wear of the contact surface.
It contains a. These restraining pieces 12 are rotatably pivotally attached at their proximal ends to the restraining cap 11 and are rotatable in the direction of the arrow in the figure. Then, springs 13 for urging the restraint pieces 12 in the peripheral surface direction of the mounting shaft 3 are connected to each other, and a resistance is applied to the rotation of the mounting shaft 3 by this urging force.

Here, when the mounting shaft 3 is inserted into the joint 8 from the restraint cap 11, the recess 3a of the mounting shaft 3 is set at a position corresponding to the roller piece 12a of the restraint piece 12 of the restraint cap 11 as shown in FIG. It As described in FIG. 3 (b), the concave portion 3a of the mounting shaft 3 has the linear portion 3b and the curved portion 3c having an oval cross section, and the linear portion 3b has the restraining piece 12 as shown in FIG. It is clamped by 12a. Therefore, when the linear portion of the mounting shaft 3 faces the roller piece 12a, the rotation of the mounting shaft 3 is restricted. Therefore, by utilizing this, the restraint cap 11 can serve as a restraint mechanism for holding the toilet seat 1 in the upright position.

The opening / closing mechanism M including the above elements is also arranged on the right side in the tenth. In this case, the seats 1a, 2 for the toilet seat 1 and the toilet lid 2
The relationship between the insertion holes 1b and 2b of a and the mounting shaft 3 is as described in FIGS. 4 (a) and 4 (b). However, since the toilet lid 2 does not fall in the closing direction due to its own weight even when leaning against the tank of the toilet bowl A, no restraint mechanism is required, and therefore the restraint piece 12 and the roller piece 12a are not provided inside the restraint cap 11. Not incorporated.

In the above configuration, when only the toilet lid 2 is raised, the fourth
As shown in FIG. 3B, the insertion hole 2b of the right mounting seat 2a and the mounting shaft 3 are in a fitted state, while the left side is loosely fitted, so that the mounting shaft 3 of the right opening / closing mechanism M is It rotates together with the toilet lid 2. That is, when only the toilet lid 2 is opened and closed, only the right opening / closing mechanism M is involved in the operation, and the toilet lid 2 is freely rotated with respect to the mounting shaft 3 connected to the left opening / closing mechanism M.

On the other hand, the mounting shaft 3 from the closed state of the toilet seat 1 to the standing state thereof rotates as shown in FIGS. 7 and 8. In these drawings, each of (a) shows the case where the toilet seat 1 is closed, and the straight portion 3b of the mounting shaft 3 is in a vertical posture.

When the toilet seat 1 is erected from this closed state, the mounting shaft 3
Rotates clockwise in FIGS. 7 (a) and 8 (a). At this time, the concave portion 3a of the mounting shaft 3 pushes the restraining piece 12 and the roller piece 12a to continue the rotation, and the tip portion inserted into the joint 8 changes its posture as shown in FIG. 7 (b). That is, since the insertion hole 8a of the joint 8 gives a play to the mounting shaft 3 having an oval cross section, FIG.
As shown in (b), the linear portion 3b of the mounting shaft 3 is the linear portion 8c of the insertion hole 8a.
The rotation is not transmitted to the joint 8 until it comes into contact with. Therefore, the load at the time of starting to open the toilet lid 2 is only required to rotate the concave portion 3a against the spring 13, so that light handling is possible.

Next, when the toilet seat 1 is further raised, the rotational force is transmitted to the joint 8 and the joint 8 tries to rotate. On the other hand, the coil spring 10 of the opening / closing mechanism M on the left side is
It is wound counterclockwise when viewed from the center side. Therefore, since the joint 8 rotates in the clockwise direction, when the joint 8 rotates, an acting force opposite to the winding direction is applied to the coil spring 10 in the circumferential direction. As a result, the inner diameter of the coil spring 10 is increased, the degree of fitting with the joint 8 and the rotor 7 is reduced, and the transmission of the rotational force between them is interrupted.

As described above, by utilizing the deformation of the coil spring 10, the casing 8 of the joint 8 is put into an idle state, and the mounting shaft 3 is not loaded with resistance by the casing 4 and the rotor 7. Therefore, there is no resistance when opening the toilet seat 1, and the toilet seat 1 can be set to the standing position with a light operation. In the opening / closing mechanism M on the right side, as shown in FIG.
Since the mounting shaft 3 can rotate within the insertion hole 1b of the mounting seat 1a, it freely rotates when the toilet seat 1 rotates.

When the toilet seat 1 stands up, as shown in FIG. 8 (c),
The roller piece 12a of the restraint piece 12 of the restraint cap 11 is the mounting shaft 3
Abutting on the straight line portion 3b. The roller piece 12a is a spring 1
The urging force of 3 squeezes the linear portion 3b to restrain the rotation of the mounting shaft 3 due to the rotation moment of the toilet seat 1. For this reason,
The toilet seat 1 is held in its upright position and can be self-supporting. Therefore, it is possible to stand still so as to take a posture of an appropriate standing angle.

Next, when the toilet seat 1 is closed, the toilet seat 1 is pushed downward with a force to release the restraint of the mounting shaft 3 by the roller piece 12a. At this time, the mounting shaft 3 rotates counterclockwise in FIGS. 7 (d) and 8 (c).

Here, from the standing point up to a certain angle, the play between the joint 8 and the mounting shaft 3 causes a quick operation without receiving resistance from the casing 4 and the rotor 7. That is, during the transition from the state of FIG. 7 (d) to (c), the mounting shaft 3 which rotates integrally with the toilet seat 1 due to the shape of the insertion hole 8a in the joint 8 idles in the joint 8. Then, as shown in FIG. 7 (c), the linear portion 3 of the mounting shaft 3 is
The rotation from the mounting shaft 3 is transmitted to the joint 8 only when b comes into contact with the straight portion 8c of the insertion hole 8a. Therefore, in the area of the angle α shown in FIG. 7 (c), the toilet seat 1 makes a movement similar to a natural fall, and rotates in the closing direction at a high rotation speed without receiving resistance.

Further, after the state shown in FIG. 7 (c), the joint 8 is rotated counterclockwise by the mounting shaft 3.
At this time, the coil spring arranged between the rotor 7 and
10 receives the acting force in the winding direction from the peripheral surface of the joint 8. Therefore, the coil spring 10 is deformed so that the inner diameter thereof becomes small, the fitting portions of the joint 8 and the rotor 7 are strongly pressed, and the rotational force can be transmitted from the joint 8 to the rotor 7. Then, when the rotor 7 rotates in the casing 4, the resistance of the enclosed grease acts. As a result, the toilet seat 1 rotates quickly in the region of the angle α, but thereafter, the speed is attenuated by this resistance, then becomes a substantially constant low speed, and the toilet seat 1 is gently placed on the upper surface of the toilet bowl A.

As described above, when the toilet seat 1 is closed, the toilet seat 1 quickly rotates in a certain angle range from the standing state, and then slowly descends. Therefore, the time until the toilet seat 1 is closed is
It is shorter than in the case where the resistance always acts from the beginning. Also, when it reaches the surface A of the toilet, the casing 4
Since the resistance by the rotor 7 is acting, it operates gently. Therefore, it is possible to use the seat 1 quietly without giving a shock to the toilet seat 1 or generating a hitting sound.

Further, when both the toilet seat 1 and the toilet lid 2 are erected, the same operation as described above can be performed by the functions of the left and right opening / closing mechanisms M. It goes without saying that the toilet seat 1 behaves in the same manner as described above. Then, with respect to the toilet lid 2, a cushioning operation is performed when the toilet lid 2 is closed by the opening / closing mechanism M on the right side.

As shown in FIG. 4 (b), the toilet lid 2 has a mounting shaft 3 fitted in an insertion hole 2 b of its mounting seat 2 a, and the toilet seat 1 is attached to the mounting shaft 3 as shown in FIG. 4 (a). Free rotation is possible. Therefore, the opening / closing mechanism M on the right side is involved only in opening / closing the toilet lid 2, and its operation is exactly the same as that described in the case of the toilet seat 1. That is, when the toilet lid 2 is raised, the resistance is eliminated by utilizing the expansion of the inner diameter of the coil spring 10, and when the toilet lid 2 is closed, the resistance from the casing 4 and the rotor 7 is first received before moving toward the toilet seat 1 quickly. Performs a gradual closing operation.

When the toilet lid 2 is kept upright and only the toilet seat 1 is closed, only the opening / closing mechanism M on the left side operates. this is,
This is because the mounting shaft 3 is rotatable with respect to the insertion hole 1b on the left side of the toilet seat 1 as shown in FIG. 4 (a), so that the opening / closing mechanism M on the right side does not interlock with the operation of the toilet seat 1. It goes without saying that the opening / closing mechanism M on the right side of the toilet seat 1 and the left side of the toilet lid 2 can be interlocked with each other depending on the relationship between the mounting shaft 3 and the insertion holes 1b and 2b of the toilet seat 1 and the toilet lid 2, respectively. Yes.

Further, as shown in FIGS. 1 and 2, the end surface of the mounting shaft 3 is constrained by the projection 2c provided on the toilet lid 2.

The opening / closing mechanism M is fixed to the base B-1 by a sleeve 5 having a cushioning function. Therefore, the shock or the like due to the opening / closing operation of the toilet seat 1 and the toilet lid 2 is absorbed, and the vibration given to the sanitary washing device B can be damped. Therefore, the degree of impact on the equipment provided in the sanitary washing device B also decreases,
Rattling of members is also eliminated.

[Effect of device]

As explained above, in the toilet seat and toilet lid opening / closing mechanism of the present invention, these are freely rotated in the initial stage of closing the toilet seat and toilet lid from the upright position, and then the toilet seat and toilet lid are connected to the opening / closing mechanism resistance mechanism. The lid's mounting shaft is linked. Therefore, while the toilet seat and the toilet lid are closed from the upright state, the resistance generated by the opening / closing mechanism acts on the torque generated around the mounting axis, and the closing operation can be performed without giving an impact to the toilet body. Then, within a certain angle range from the standing state, no resistance is given to the toilet seat and the toilet lid due to the play between the opening / closing mechanism and the mounting shaft. Therefore, the rotation speed of the toilet seat and the toilet lid is high in the initial stage of closing, and compared with the conventional mechanism that provides a constant resistance,
The time until closing can be shortened. Therefore,
The amount of offensive odor that accumulates in the toilet body after use can also be reduced,
It does not cause any discomfort when used by the next person.

[Brief description of drawings]

1 is a partially cutaway plan view of an opening / closing mechanism showing an embodiment of the present invention, FIG. 2 is a view taken along the line II of FIG. 1, and FIG.
(a) is a front view of the mounting shaft, and FIG. 3 (b) is II-II of FIG. 3 (a).
4 is a sectional view showing a mounting shaft, a toilet seat and a mounting seat of a toilet lid, FIG. 5 (a) is a partial cutaway view showing the casing installation of the opening / closing mechanism, and FIG. 5 (b) is a sectional view. It is a notch top view of a casing. Further, FIG. 6 is a perspective view of a coil spring having a clutch function, FIG. 7 is a sectional view showing the behavior of the joint due to rotation of the mounting shaft, and FIG. 8 is a sectional view showing the arrangement of the mounting shaft and the restraining cap. FIG. 9 is a perspective view showing an example in which a toilet seat and a toilet lid are connected to a sanitary washing device provided in the toilet body,
FIG. 10 is a plan view showing the arrangement of the opening / closing mechanism for the toilet seat and the toilet lid. 1: toilet seat, 1a: mounting seat 1b: insertion hole, 2: toilet lid 2a: mounting seat, 2b: insertion hole 3: mounting shaft, 3a: concave portion 4: casing, 4a: fixed piece 5: sleeve, 6: inner layer wall 6a: Slit, 7: Rotor 8: Joint, 8a: Insertion hole 10: Coil spring 11 Restraint cap, 12: Restraint piece 12a: Roller piece, 13: Spring A: Toilet body, B: Sanitary washing device B-1: Base, B-2: Support boss M: Open / close mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Masanobu Kawamoto 184-1 Maioka-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Nifco Co., Ltd. (56) References JP-A-63-38422 (JP, A) 60-50892 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A mounting shaft inserted into each mounting seat of a toilet seat and a toilet lid is integrally rotatable with respect to one of the toilet seat and the toilet lid and is connected with the other so as to be rotatable relative to the other, An opening / closing mechanism in which a casing with a built-in resistance mechanism that gives resistance to the mounting shaft when the tip end side of the mounting shaft is inserted and the toilet seat and the toilet lid rotate in a closing direction from the upright posture is arranged on the toilet side, The resistance mechanism includes a hollow-structured joint that receives the tip side of the mounting shaft, and connects the joint to a resistance load source of the resistance mechanism. The resistance mechanism includes the seat and the toilet seat between the mounting shaft and the joint. When the lid is closed from the upright position, the joint has a vertical cross-sectional shape with a gap in which the joint idles within a certain angle range with respect to the rotation of the mounting shaft and is then rotatable integrally. Toilet seat and toilet lid opening and closing mechanism, characterized in that which gave.