JP2525184Y2 - Opening and closing mechanism of toilet seat and / or toilet lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mechanism for opening and closing a toilet seat and a toilet lid provided on a perched flush toilet.

[Related Art] Only a toilet seat or a toilet seat and a toilet lid are attached to a stool-type flush toilet so as to be freely opened and closed. When the toilet seat and the toilet lid are closed, resistance is applied to the rotation of the hinge mechanism, and a structure that operates gently has been conventionally used. As a device provided with this mechanism, there is one described in, for example, JP-A-2-63424. The opening / closing mechanism is also provided with a mechanism for holding the toilet seat in its upright posture when it is raised.

In this conventional structure, a hinge shaft connected to a base end of a toilet seat or a toilet lid is inserted into a casing of an opening / closing mechanism, and a resistance mechanism and an upright holding mechanism in the casing are mechanically connected to the hinge shaft. Has become. Among them, the upright holding mechanism uses a cam to use the engaging force as the upright holding force, and this cam is incorporated in the end face of the casing into which the hinge shaft is inserted.

[Problems to be solved by the invention]

However, since the hinge shaft is directly inserted into the cam and connected to the internal resistance mechanism, the hinge shaft has a structure in which the hinge shaft is fitted into a hole formed in the cam and assembled. Therefore, if there is a gap between the hinge shaft and the hole, the inside of the casing is exposed to the outside, and water or the like may enter the inside. However, it is necessary that the hinge shaft be removable so that the toilet seat and lid can be inspected and replaced, etc. For this reason, the camshaft must have a certain degree of freedom in fitting into the hole. In other words, it is not possible to provide a structure in which no gap is formed. Therefore, in the structure in which the hinge shaft is inserted directly into the opening / closing mechanism through the cam, it is inevitable that water or a detergent for cleaning enters the casing.

On the other hand, since the grease or the like for giving viscous resistance is sealed in the resistance mechanism in the casing, if water or detergent enters, the viscosity of the grease is reduced. For this reason, the resistance at the time of closing a toilet seat or a toilet lid becomes weak, and it becomes impossible to operate slowly. Further, when the detergent enters and is concentrated, the synthetic resin member provided in the casing may be softened or broken.

As described above, in the conventional structure, since the hinge shaft is directly inserted into the casing of the opening / closing mechanism, there is a problem that water, detergent, or the like enters from the inserted portion.

In addition, not only the casing of the opening / closing mechanism for giving resistance when the toilet seat or the toilet lid is closed, but also a casing that is formed so as to have a strength necessary for connection of the hinge shaft and into which the hinge shaft is inserted. A similar problem occurs in the structure.

The problem to be solved in the present invention is that in a configuration in which a shaft for attaching a toilet seat or a toilet lid is inserted into a casing attached to a toilet body and connected to the casing, water and detergents are prevented from entering the casing and drainage is quickly performed. Therefore, the rotational operation of the mounting shaft is always kept good.

[Means for solving the problem]

The present invention is directed to a toilet seat and / or toilet lid opening / closing mechanism for connecting a casing fixed to a toilet body side and a mounting shaft provided at a base end of the toilet seat and / or toilet lid to the casing, wherein a joint is provided in the casing. Is installed in a watertight manner with respect to the outside and the end face faces the outside of the casing, and a mounting hole for inserting the mounting shaft in the axial direction from the end face where the joint faces the outside is provided. It is characterized in that a groove whose opening cross section is gradually increased toward the outside is provided.

[Action]

By incorporating a joint into which a mounting shaft connecting the toilet seat and the toilet lid is connected to the toilet side in a watertight manner with respect to the casing, for example, a mechanism is provided in the casing that gives resistance to the operation when the toilet seat and the toilet lid are closed. In this case, water is prevented from penetrating into the mechanism and is protected.

In addition, the joint itself has a groove in the mounting hole for inserting the mounting shaft, and this groove has an opening cross section that gradually increases from the back side of the mounting hole toward the end face side, so that the joint is tightly fitted into the mounting hole It is easier for the water that has entered into the tank to be drained than it would otherwise be.

〔Example〕

FIG. 1 is a plan sectional view showing a main part of an opening / closing mechanism in which the base ends of a toilet seat and a toilet lid are connected.

In this embodiment, a case will be described in which a sanitary washing device B having a washing function is provided in a toilet body A as shown in FIG. 12, and an opening / closing mechanism is arranged in a casing thereof. And thirteenth
As shown in the figure, 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, a pair of right and left mounting seats 1a and 2a connected to the opening / closing mechanism M are formed at the base ends of the toilet seat 1 and the toilet lid 2, respectively. Each of the toilet lid 2 is connected to the opening / closing mechanism M.

The mounting shaft 3 is made of a synthetic resin, and has a flange 3a at one end and an insertion end 3b having a circular cross section at the other end as shown in FIGS. 2 (a) and 2 (b). Further, from the flange 3a to the insertion end 3b, as shown in FIG. 2D, an engagement shaft 3c having a substantially elliptical vertical cross section is formed. Two slits 3d running in the axial direction are cut out in the arc portion of the circumferential surface of the engagement shaft 3c, and a bulging portion 3e slightly protruding outward is formed in a portion where the arc portion and the straight portion intersect. Is formed.

The mounting seat 1 of 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, 2a is the mounting seat 1a,
It differs as shown in FIG. 3 depending on the left and right arrangement of 2a. That is, in the case of the right mounting seats 1a and 2a in FIG.
As shown in FIGS. 1A and 1B, the insertion hole 1b on the toilet seat 1 side has a circular shape with the radius of the arc surface of the mounting shaft 3, and the insertion hole 2b of the toilet lid 2 fits the mounting shaft 3. It is an oval cross section. Also,
In the case of the left mounting seats 1a and 2a in FIG. 13, as shown in FIGS. 3 (c) and (d), the insertion hole 1b of the toilet seat 1 is fitted with the mounting shaft 3, and the insertion hole of the toilet lid 2 is inserted. 2b is a circular cross section. Due to such cross-sectional shapes of the insertion holes 1b and 2b, the toilet seat 1 freely rotates around the mounting shaft 3 on the right side, and the toilet lid 2 rotates together with the mounting shaft 3. 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.

As shown in FIG. 1, the opening / closing mechanism M has an outer shell formed by a casing 4 and a cap 4a covering one end thereof, and the casing 4 is fixed at an appropriate position inside the sanitary washing device B. The casing 4 has a cylindrical shape with one end open, and a circular projection 4b in the center of the closed portion at the other end.
Project in the axial direction. The casing 4 is provided with a resistance mechanism for applying a resistance to the mounting shaft 3 when the toilet seat 1 is closed, a clutch mechanism for applying a load of this resistance only when the toilet seat 1 is closed, and the like.

The resistance mechanism includes a rotor 5 rotatable in the casing 4.
And a coil spring 6 coaxially arranged with the coil spring 6 as a resistance generating source.

As shown in FIG. 4, the rotor 5 is a cylindrical body having one end opened, and has an outer diameter that is fitted into the casing 4 exactly and is rotatable. For this installation, a recess 5a into which the projection 4b of the casing 4 is fitted is formed at the bottom of the rotor 5, so that the rotor 5 can be arranged coaxially with the casing 5. Further, a flange 5b is provided on one end side of the rotor 5, and four grooves 5c running in the axial direction are formed on the peripheral surface. As shown in FIG. 1, a packing 5d is provided on the peripheral surface on the open end side of the rotor 5, and this is mounted on a flange 5b.
The rotor 5 is restrained from moving in the axial direction in the casing 4 by the cap 4a via the ring 5e. A viscous agent V such as grease is sealed between the casing 4 and the outer peripheral surface of the rotor 5 by using a groove 5c, and when the rotor 5 rotates in the casing 4, the viscous agent V The resistance acts on the rotor 5.

The resistance caused by the rotor 5 and the coil spring 6 finally exerts an acting force on the joint 7 connecting the mounting shaft 3 to the opening / closing mechanism, and the joint 7 assumes this standing posture when the toilet seat 1 is raised. The cam 8 for keeping is connected. The member that gives the resistance of the coil spring 6 to the joint 7 is a rotatable transmission element 9 coaxially arranged inside the rotator 5, the details of which are shown in FIG.

Almost half of the transmission element 9 in the axial direction is the concave portion 5a of the rotor 5.
Has a circular opening cross section that is rotatably fitted into the cylindrical portion 5f formed with. The other half has an opening cross section in which a fan-shaped projection 9a is formed at a position facing the radial direction. A flange 9b having a large diameter is formed at a substantially intermediate position in the axial direction of the transmission element 9, and an engagement seat 9c to which one end of the coil spring 6 is connected is provided on the flange 9b. An engagement hole 9d is provided radially opposite to and connected to the clutch mechanism. As shown in FIG. 5 (c), the engagement seat 9c has a concave shape obtained by cutting out one surface of the flange 9b, and is formed to have a small distance in the circumferential direction as shown in the enlarged view. The engagement holes 9d are formed by penetrating the flange 9b in the axial direction, and are provided at two locations in the illustrated example.

A clutch spring 10 and a shoe 11 for interlocking and non-interlocking with the rotor 5 are incorporated in the transmission 9. As shown in FIG. 6, the clutch spring 10 is formed by winding a steel wire having a square cross section, and has a protrusion 10a protruding only at one end in the axial direction. Then, as shown in FIG. 1, the projection 10a is engaged with the engagement hole 9d of the transmission element 9.
And the connection between the clutch spring 10 and the transmission 9 is connected. The shoe 11 is formed in a bowl shape as shown in FIG. 7, and has an opening 11a at the bottom thereof which fits into the cylindrical portion 5f of the rotor 5, and is provided around the cylindrical portion 5f of the rotor 5. The protrusions 11b that fit into the four recesses 5g are formed on the bottom surface.

The shoe 11 has a rotor 5 formed by the opening 11a and the convex portion 11b.
Is positioned and fixed on the bottom side of the rotor, and rotates integrally with the rotor 5. And the clutch spring 10 is
As shown in FIG.
The inner circumference faces the outer circumference of the transmission element 9 so as to face the inner circumference wall of the transmission element 9. The direction in which the clutch spring 10 is wound is such that when the transmitter 9 rotates to the side where the toilet seat 1 closes, the diameter increases along with the rotation, and when the transmitter 9 stands up, the diameter contracts. As a result, when the toilet seat 1 is raised, the clutch spring 10 is wound around the outer peripheral surface of the transmission element 5 and separates from the inner periphery of the shoe 11, so that the shoe 11 and the transmission element 9 become unrelated. Further, when the toilet seat 1 rotates in the falling direction, the diameter of the clutch spring 10 increases, and the outer peripheral surface of the clutch spring 10 comes into contact with the inner periphery of the shoe 11 as shown in FIG. Therefore, the clutch spring 10 is interlocked with the rotor 5 side, the transmitter 9 rotates integrally with the rotor 5, and the viscous resistance by the viscous agent V causes the transmitter 9 to rotate.
To work.

FIG. 8 is a detailed view of the joint 7, in which a shaft portion 7a having a circular cross section rotatably inserted into an insertion portion 5h provided on a cylindrical portion 5f of the rotor 5 is provided at the distal end side. Protrusions 7b protruding in the radial direction are provided at two places on the outer peripheral surface of the shaft portion 7a, and the protrusions 7b of the portion between the protrusions 9a of the transducer 9 shown in FIGS. 7b is free to move.
That is, the width of the protrusion 7b in the circumferential direction is equal to the protrusion 9a of the transducer 9.
The width of the opening is smaller than the width of the opening, and the shaft portion 7a can be inserted into the transmitter 9 with play. Further, a cam portion 7c is formed on the outer periphery of the proximal end side of the joint 7, and the cam portion 7c has two stepped portions projecting toward the distal end side in the circumferential direction.
7d is provided. Further, the base end of the joint 7 is attached to the mounting shaft 3.
The mounting end 3b of the mounting shaft 3 is opened as the mounting hole 7e of
Insertion hole 7e-1 with a circular cross-section for inserting
A fitting hole 7e-2 having an oval cross section into which 3c is fitted is formed. Then, from the insertion hole 7e-1 to the open end of the fitting hole 7e-2,
A fan-shaped groove 7f is engraved at two locations facing each other in the radial direction.

The joint 7 is housed in the casing 4 as shown in FIG. 1, and its end is restrained by the cap 4a and assembled. And packing 7g is incorporated between the cap 4a and the inside of the casing 4 is formed as a closed space. Therefore, since the mounting shaft 3 is fitted and connected to the mounting hole 7e of the joint 7, there is no gap or the like between the mounting shaft 3 and the portion to be inserted into the casing 4. Water intrusion is also prevented.

FIG. 9 is a detailed view of the cam 8 which meshes with the cam portion 7c of the joint 7. The opening 8a for passing the joint 7 is opened, and a projection 8b for positioning and fixing to the cap 4a is provided at the lower end. On the surface of the cam 8 facing the cam portion 7c of the joint 7, two concave portions 8c into which two step portions 7d of the cam portion 7c are simultaneously fitted are formed. A receiving seat 8d for the coil spring 6 is provided on the other surface, and a holding groove 8e for restraining one end of the coil spring 6 is formed on the back surface of the projection 8b.

As shown in FIG. 10, the coil spring 6 protrudes, at one end, an engaging portion 6a that fits into the engaging seat 9c of the transmission element 9 in parallel with the axis, and at the other end, a projection that enters the holding groove 8e of the cam 8. 6b
Are projected in the radial direction. The winding direction of the coil spring 6 is a direction in which resistance can be given to the joint 7 when the toilet seat 1 moves in the falling direction. When the joint 7 rotates in the upright direction, the winding of the coil spring 6 becomes loose. On the other hand, if the rotation is in the falling direction, the winding direction is set to the tightening direction.

The coil spring 6 not only adds resistance to the joint 7, but also has one end abutting against the receiving seat 8 d of the cam 8. It also has the function of pressing on 7c. For this reason, the cam 8 can be moved in the axial direction with respect to the cam portion 7c of the joint 7 by using the coil spring 6 for adding resistance, without having a dedicated elastic member.

The opening / closing mechanism M including the above elements is also arranged on the right side in FIG. In this case, the mounting seat for the toilet seat 1 and the toilet lid 2
The relationship between the insertion holes 1b, 2b of 1a, 2a and the mounting shaft 3 is shown in FIG.
This is as described in (b). However, 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, does not require a restraining mechanism, and therefore does not require the cam 8, and the joint 7 does not have the cam portion 7c. Except for the above, all other mechanisms are the same as the left mechanism.

In the above configuration, when the toilet seat 1 is raised from the closed state, the fitting shaft 3c of the mounting shaft 3 and the fitting hole 7c-2 of the joint 7 are formed.
As a result, the joint 7 also rotates integrally (the direction of rotation is counterclockwise when viewed from the left end in FIG. 1). At this time, the clutch spring 10 is contracted, and the inner peripheral surface thereof is in contact with the outer periphery of the transmission 9, and is separated from the inner peripheral surface of the shoe 11. Therefore, when the mounting shaft 3 rotates in the upright direction, the rotor 5 and the joint 7 are insulated from each other, so that the resistance of the viscous agent V does not act on the joint 7.
Further, since the engaging portion 6a of the coil spring 6 is restrained by the engaging seat 9c of the transmitter 9, the rotation of the transmitter 9
As shown in FIG. 11 (a), the coil spring 6 receives a force opposite to the winding direction and is elastically deformed to be loose. The elastic deformation of the coil spring 6 becomes a resistance when the toilet seat 1 is erected, but is small in the rewinding direction. Therefore, when the toilet seat 1 is to be erected, the toilet seat 1 can be opened lightly only by the force of rewinding the coil spring 6 without receiving the resistance from the rotor by the clutch spring 10.

When the toilet seat 1 is closed, the toilet seat 1 is pushed down by a force enough to release the constraint between the cam 8 and the cam portion 7c. Note that, from the standing point to a certain angle, the shape of the projection 7b of the shaft portion 7a of the joint 7 and the opening cross section avoiding the projection 9a of the transmitter 9 is used.
Rotate quickly without resistance. That is,
There is play until the projection 7b of the shaft portion 7a hits the projection 9a of the transmission element 9. During this time, the rotation is not transmitted to the transmission element 9 even if the joint 7 continues to rotate. Then, the projection 7b becomes the projection 9a.
, The rotation is transmitted to the transmission element 9 for the first time, and thereafter, the resistance by the rotor 5 and the coil spring 6 is received.

When the transmission 9 rotates, the clutch spring 10 restrained by the engagement hole 9d also rotates integrally. Since the clutch spring 10 is in contact with the inner peripheral surface of the shoe 11, the rotation of the transmission 9 is transmitted to the rotor 5. Therefore, since the rotor 5 rotates together with the transmitter 9, the viscous resistance of the viscous agent V sealed between the transmitter 4 and the transmitter 4 acts on the transmitter 9, and the closing speed of the mounting shaft 3 via the joint 7 is reduced. On the other hand, the coil spring 6
As shown in FIG. 11 (b), the transmission element 9 is twisted in the direction in which it is wound with the rotation of the transmission element 9. At this time, the torsional reaction force to the coil spring 6 becomes a resistance to the transmitter 9 and acts as a resistance to the mounting shaft 3.

As described above, when the toilet seat 1 is closed, the resistance of the opening / closing mechanism M is applied, so that the toilet seat 1 does not gently cover the toilet body A and generate an impact sound. Further, such an operation is performed by the toilet lid 2.
The same applies in this case, and in this case, a resistance is exerted when the right opening / closing mechanism M in FIG. 13 is closed.

Further, since the mounting shaft 3 is connected to the opening / closing mechanism M using the joint 7 incorporated in the casing 4 in a sealed state, the inside of the casing 4 is completely shut off from the outside. For this reason, when the mounting shaft 3 is directly inserted into the casing 4 as in the related art, invasion of water or the like into the inside cannot be avoided, but this can be prevented. Therefore, the built-in resin parts are not softened or broken, and the viscosity agent V is not diluted. As a result, a gentle operation of the toilet seat 1 and the toilet lid 2 is always ensured, and labor for replenishing the viscous agent V is eliminated.

Further, since the groove 7f provided in the joint 7 has an opening cross section that spreads in a fan shape, even if water, detergent or the like enters the mounting hole 7e, it is quickly discharged from the groove 7f. For this reason, compared to the case where the mounting shaft 3 is firmly fitted into the mounting hole 7e, accumulation of water, detergent, and the like is prevented, and damage to the joint 7 and the mounting shaft 3 due to concentration of the detergent is also prevented. Further, since there is no need to provide a waterproof structure between the mounting shaft 3 and the joint 7, the fitting of the mounting shaft 3 to the joint 7 does not need to be strict, and the mounting shaft 3 can be easily attached and detached. In addition, although the example provided with the toilet seat 1 and the toilet lid 2 was shown in the embodiment, for example, even if the toilet seat 1 is provided only, What is necessary is just to be connected.

[Effect of the invention]

In the present invention, the casing for connecting the toilet seat and the toilet lid to the toilet via the mounting shaft has a joint that is watertight with respect to the outside.Therefore, there is no intrusion of water, detergent, or the like into the casing, and the casing is closed. Corrosion of metal parts provided therein and deterioration of strength of synthetic resin parts can be prevented, and durability can be improved.

In addition, by providing a groove for guiding water or the like that has penetrated to the outside in the mounting hole of the joint, it is possible to prevent water or detergent from accumulating in the mounting hole, and the mounting shaft and the mounting hole due to concentration of detergent etc. Poor connection between them can be prevented, and good operation can always be maintained.

[Brief description of the drawings]

FIG. 1 is a plan sectional view of a main part of an opening and closing mechanism showing an embodiment of the present invention, and FIGS. 2 (a), (b) and (c) are a plan view, a side view and a front view of a mounting shaft, respectively. 2 (d) is a sectional view taken along the line II of FIG. 2 (a), and FIG. 2 (e) is FIG. 2 (b).
Fig. 3 is a cross-sectional view showing a mounting shaft and a mounting seat of a toilet seat and a toilet lid, Fig. 4 (a) is a cutaway side view of a rotor, and Fig. 4 (b). Fig. 5 (a) is a view taken along the line III-III in Fig. 5 (a), Fig. 5 (a) is a side view of the transmitter, and Figs. 5 (b) and 5 (c) are lines IV-IV in Fig. 5 (a). 5 (d) is a sectional view taken along line VI-VI of FIG. 5 (b), and FIG.
7A and 7B are side and front views of the clutch spring, FIGS. 7A and 7B are cutaway side and plan views of the shoe, respectively, and FIG. 8A is a side view of the joint. FIGS. 8 (b) and 8 (c) are views taken along lines VII-VII and VIII-VIII of FIG. 9 (a), respectively, and FIG. 8 (d) is an IX-IX line of FIG. 8 (b). FIG. 8 (e) is a sectional view taken along line XX of FIG. 8 (b), FIGS. 9 (a) and (b) are a longitudinal sectional view and a plan view of the cam, and FIG. 9 (c). ) And (d) are the WW line and YY in FIG.
FIG. 9 (e) is a view taken along the line ZZ of FIG. 9 (d),
FIGS. 10 (a) and (b) are front and side views of the coil spring, respectively, FIGS. 11 (a) and (b) are schematic diagrams showing the movement of the coil spring, and FIG. 12 is provided on the toilet body. FIG. 13 is a perspective view showing an example in which a toilet seat and a toilet lid are connected to a sanitary washing device, and FIG. 13 is a plan view showing an arrangement of an opening / closing mechanism for the toilet seat and the toilet lid. 1: Toilet seat, 2: Toilet lid 3: Mounting shaft, 4: Casing 5: Rotor, 6: Coil spring 7: Joint, 8: Cam 9: Transmitter, 10: Clutch spring 11: Shoe A: Toilet bowl body, B : Sanitary washing device M: Opening / closing mechanism, V: Viscous agent

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiro Yanagawa 5-1-1 Kuchiamihigashi, Kokuraminami-ku, Kitakyushu-shi, Fukuoka Tokoki Co., Ltd. Kokura No. 2 Plant (72) Inventor Ichikichi Oshima Tokyo 1-8-11 Higashikanda, Chiyoda-ku Sugatune Industry Co., Ltd. (72) Inventor Yojiro Nakayama 1-8-11 Higashikanda, Chiyoda-ku, Tokyo Inside Sugatune Industry Co., Ltd. (56) Reference Jiko 7-55993 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] An opening / closing mechanism for a toilet seat and a toilet lid for connecting a casing fixed to a toilet body and a mounting shaft provided at a base end of the toilet seat and / or the toilet lid to the casing, wherein the casing has The joint is installed in a watertight manner with respect to the outside and the end face faces the outside of the casing, and a mounting hole for inserting the mounting shaft in an axial direction from the end face where the joint faces the outside is provided. A toilet seat and / or toilet lid opening and closing mechanism provided with a groove whose opening cross section is gradually increased from the outside toward the outside.