JPH10258003A - Fitting mechanism of toilet seat and/or toilet lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent sewage from sticking to a hinge chamber due to splashing of urine and casing from dropping and breaking in the case of being transported by providing a projection in the casing and a recess in a hinge block to be inserted into and fixed to the projection. SOLUTION: Projections 2a into which hinge blocks 5 are inserted, are formed at the front side of a casing 2, hinge block insertion sections 3a, 4a are provided in the base sections of a toilet seat 3 and a toilet lid 4, the projections 2a and the hinge block insertion sections 3a, 4a are connected continuously through the hinge blocks 5. The hinge blocks 5 are given a recess 5a corresponding to the projections 2a provided in the casing 2. The hinge blocks 5 are given hinge bodies 5b to pivot the hinge block insertion sections 3a, 4a provided at the base sections of the toilet seat 3 and the toilet lid 4. The hinge blocks 5 are fixed by fitting the recess 5a into the projection 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet seat device having an electric component in a casing, and more particularly to a structure in which a toilet seat and a toilet lid connected to the casing can be easily attached and detached.

[0002]

2. Description of the Related Art A stool-type flush toilet is usually provided with a toilet seat alone directly in a toilet bowl, and is provided with a local washing function, a deodorizing function and a local drying function in a casing, which is called a "multifunctional toilet seat". Some are installed on the toilet bowl. The latter is a method in which a nozzle device for local cleaning, a heating water supply system for cleaning water, a deodorizing device, a local drying device and a control unit thereof are provided in a casing, and the casing is fixed to a toilet body, and a toilet seat is provided on the casing. It has a structure with a toilet lid.

[0003] These toilet seats and toilet lids generally employ a structure in which mounting seats are protruded from the right and left ends of their respective base ends, holes are formed in the seats, and the holes are hinged to a casing through a hinge shaft to be connected to the casing. Have been.

[0004] In order to connect the toilet seat and the toilet lid to the casing by such a hinge shaft, the toilet seat and the mounting seat of the toilet lid are arranged so as to overlap each other, and the casing has a shape sandwiching the left and right mounting seats. After the hinge shaft is inserted, the hinge shaft is assembled into the toilet seat or the seat for the toilet lid by elastic engagement or caulking so that the hinge shaft does not easily come off.

Since the toilet seat and the toilet lid are members to which a person sits and are exposed to dust, respectively, the toilet seat and the toilet lid are easily soiled, and water splashes and the like often adhere to the toilet seat. For this reason, when wiping and cleaning the toilet seat and the toilet lid, it is difficult to work while being connected to the casing, and it is necessary to remove the toilet seat and the toilet lid.

However, in the structure in which the hinge shaft is passed through the mounting seat and connected to the casing, a tool such as a screwdriver is required when the hinge shaft is removed. For this reason, general housewives are not accustomed to handling tools,
Even when trying to clean the corner, the hinge shaft often ends without being able to pull out the hinge shaft.

If the hinge shaft is forcibly pulled out,
There is also a high possibility of damaging members and surface shape for elastic engagement or caulking. For this reason, even if it tries to connect the toilet seat and the toilet lid to the casing again, the hinge shaft loses its function,
As a result, backlash or the like is generated at the time of opening / closing operation of the toilet seat or the toilet lid field.

As described above, in the conventional structure for connecting the toilet seat and the toilet lid to the casing using the hinge shaft, the toilet seat and the toilet lid cannot be easily removed or connected to the casing, and cleaning of these members is difficult. There is a problem that it tends to be insufficient.

As a solution to such a problem, there is one disclosed in Japanese Patent Application Laid-Open No. 5-285068.

The outline of this proposal is that, as shown in FIG. 11, the hinge shafts 3b and 4b of the toilet seat 3 and the toilet lid 4 are
The support holes 5a and 5b of the retainer block 5 are rotatably integrated with each other, and are dropped into the hinge chamber 2a to be connected to the casing 2. The retainer block 5 is inserted into the mounting groove 2b. When the lower end of the retainer block 5 hits the bottom of the mounting groove 2b and stops, the projection 5e of the lock piece 5d is engaged with the engaging groove 2b.
It has a dimensional relationship that fits into c. In the above configuration, the toilet seat 3 and the toilet lid 4 are incorporated into the casing 2 in the following manner.

As described above, the hinge shafts 3b and 4b of the toilet seat 3 and the toilet lid 4 are inserted into the support holes 5a and 5b, respectively, and the retainer blocks 5 are integrated with both ends of the hinge blocks 3a and 4a.

Next, when the retainer block 5 is dropped into the mounting groove 2b of the hinge chamber 2a, the lower end of the retainer block 5 sits on the bottom surface of the mounting groove 2b and stops. At the same time, the protrusion 5 is formed on the inner wall of the mounting groove 2b.
The lock piece 5d, which has been bent toward the center of the hinge chamber 2a when hit by e, is restored to its original shape as shown in FIG. 1 by fitting the projection 5e into the engagement groove 2c. Therefore, the projection 5e is restrained in the engagement groove 2c, and the retainer block 5 is fixed with its vertical position determined.

[0013] With such an assembly, the front end direction of the retainer block 5 is restricted by the wedge-shaped opening cross-sectional shape of the mounting groove 2b, and the retainer block 5 is also restricted vertically by the lock piece 5d and the engagement groove 2c. For this reason, the toilet seat 3 and the toilet lid 4 can be connected to the casing 2 by setting the toilet seat 3 and the toilet lid 4 at the correct positions only by dropping the integrated retainer block 5 into the hinge chamber 2a. it can.

On the other hand, when the toilet seat 3 and the toilet lid 4 are to be removed from the casing 2, they are integrally pulled up. Thus, the protrusion 5e of the lock piece 5d having a hemispherical surface shape is forcibly pulled out from the engagement groove 2c, and the protrusion 5e is mounted on the inner wall of the mounting groove 2b. For this reason, lock piece 5d
The lock piece 5 is elastically deformed by the lock piece 5 so as to bend slightly toward the center of the hinge chamber 2a.
Therefore, when the toilet seat 3 and the toilet lid 4 are further raised,
The retainer block 5 moves upward in the mounting groove 2b and can be finally removed.

As described above, the toilet seat 3 and the toilet lid 4 can be easily removed from the casing 2 only by integrating them and pulling up the connecting portion with the casing 2 by hand. Therefore, even when the toilet seat 3, the toilet lid 4, and the casing 2 are wiped and cleaned, these can be easily disassembled, can be easily cleaned to every corner, and can always be kept clean.

[0016]

Since the hinge chamber 2a is formed as a concave portion, sewage due to urinal splash or the like easily adheres to this portion.

Also, since the toilet seat 3 and the toilet lid 4 with the retainer block 5 integrated therewith are simply fitted into the hinge chamber 2a, the product can be easily attached and detached. When trying to carry, there is a possibility that the toilet seat 3 and the toilet lid 4 are separated from the casing 2 and the casing 2 falls and is damaged.

Further, at the time of cleaning, the retainer block 5 must be removed from the toilet seat 3 and the toilet lid 4, and
Conversely, when assembling, it had to be reassembled, which was troublesome.

[0019]

Means for Solving the Problems and Actions / Effects The hinge block is connected to the base end of the toilet seat and / or the toilet lid to rotatably support the toilet seat about the base end as a center of rotation. In a mounting structure of a toilet seat and / or a toilet lid in which the hinge block is detachably connected to the front side of the casing, a projection provided on the casing and a hinge for inserting and fixing to the projection are provided. Since there is no concave portion provided in the block, there is no concave portion, so that sewage such as urine splashes does not enter into the concave portion and cleaning is not difficult.

The hinge block includes a pivot block for rotatably supporting the toilet seat and a support block provided with the concave portion, and the pivot block includes a pivotable hinge body. In the case of a structure including a hinge shaft fixedly supported by the support block, assembly is easy, and a material suitable for each can be selected.

In the case where a lock mechanism for locking the engagement between the concave portion and the projection is provided, when the product is transported with the toilet seat or the toilet lid during product construction, the toilet seat 3 and the toilet seat are provided. The lid 4 and the casing 2 are separated, and the casing 2
There is no danger of falling and damaging.

A support guide concentric with the center of rotation of the hinge block is provided, and a cover having a hole having substantially the same shape as the support guide is rotatably attached to the support block through the hole. When the cover is provided with a lock mechanism for locking the engagement between the concave portion and the protrusion, even if the user forgets to lock the disassembly after disassembly, the lock is securely interlocked with the operation of closing the toilet seat or the lid. can do.

This mechanism includes a lock claw provided on the cover,
When the engagement with the locking groove provided in the casing projection is performed, the locking in the vertical direction can be reliably performed. Further, by making the engagement an elastic engagement, the engagement between the cover and the casing protrusion can be made stronger.

In the case where the second locking claw is provided on the cover side wall instead of the elastic engagement and the auxiliary locking mechanism is constituted by elastic engagement with the second locking groove provided on the support block side wall, Since the elasticity of the lock claw is not required, the lock claw can be made stronger, and the degree of freedom in design is widened.

Further, a support guide is provided on a side portion of the hinge block in a vertical direction, and a U-shaped notch and an elastic piece formed so as to be surrounded by the notch are provided on a front surface of the hinge block. When a cover for covering the elastic piece is vertically movably attached to the support guide, and a projection provided on the casing is provided with a locking projection at a position corresponding to the elastic piece, a lock mechanism with a simple component configuration is used. Can be realized.

When the support block is provided with a support hole for fixing and supporting the hinge shaft, and when a mechanism for preventing the hinge shaft from falling out of the support hole is provided, it is possible to open and close the toilet seat and the toilet lid. The hinge axis is not accidentally displaced for the operation.

[0027] Insertion holes into which the turning block can be inserted are provided on both sides of the base end of the toilet seat and / or the toilet lid, and one of the turning blocks is fixed to the turning block so as not to turn and the other is turned. , The opening / closing unit can be incorporated in the rotating block so that the opening / closing unit operates slowly by providing resistance when the toilet seat and / or toilet lid is closed.

Further, when the connecting relationship between the insertion hole provided in the toilet seat and the rotating block and the connecting relationship between the insertion hole provided in the toilet lid and the rotating block are reversed, the toilet seat and the toilet The opening / closing unit of each lid can be incorporated. Further, since the hinge shafts of the toilet seat and the toilet lid are arranged in a single axis, the size can be reduced.

Further, a hinge block for rotatably supporting the toilet seat and the toilet lid with the base end as a center of rotation is connected to a base end of the toilet seat and the toilet lid, and the hinge block is connected to the casing. Toilet seat detachably connected to the front side and / or
Alternatively, in the mounting structure of the toilet lid, when the center of rotation of the toilet seat and the center of rotation of the toilet lid are coaxially arranged, the connection shaft is one axis, so that only one uneven portion is required, Is simplified, and the cleaning property is further improved.

Further, two hinge blocks are provided on the left and right sides, and the hinge block is provided between a central bulge portion of the base end of the toilet seat and a connection portion of the base end of the toilet seat with the hinge block. When the hinge block is arranged longer than the interval between the bulging portion and the connecting portion, the toilet seat and the hinge block are not separated when the toilet seat and the toilet lid are attached and detached. And never drop it.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a toilet seat device having a structure for mounting a toilet seat and a toilet lid according to the present invention. In the embodiment, a sanitary washing device 1 for local washing will be described as an example of a toilet seat device.

In the figure, the casing 2 of the sanitary washing device 1 is fixed using the upper surface of the rim on the back side of the toilet body (not shown), and the toilet seat 3 and the toilet lid 4 can be opened and closed on this casing 2 respectively. It is attached to.

The sanitary washing device 1 is a water supply heating system for heating and supplying washing water to the inside thereof. In use, the sanitary washing device 1 goes under the toilet seat 3 to reach a ball portion of a toilet body (not shown) to supply the washing water. It incorporates a nozzle device for jetting, a controller for controlling each functional unit, and the like, and can be replaced with a conventionally used one. The operation of the functional unit can be performed by a remote controller (not shown) provided on the wall, and an auxiliary operation panel is provided on the side of the casing 2.

A hinge block 5 is provided on the front side of the casing 2.
Is formed, and the toilet seat 3 and the toilet lid 4 are formed.
Have hinge block insertion portions 3a, 4a at their base ends.
And the projection 2a and the hinge block insertion portions 3a, 4a are connected via the hinge block 5.

FIG. 2 is a schematic sectional view showing a connecting structure of the toilet seat 3 and the toilet lid 4 to the casing 2. At the bottom of the hinge block 5, a recess 5a is provided corresponding to the projection 2a provided on the casing 2. A hinge body 5b having a circular cross section for rotatably supporting hinge block insertion portions 3a and 4a provided at the base ends of the toilet seat 3 and the toilet lid 4, respectively, is provided on the side of the hinge block 5 outward. To protrude. The hinge body 5b and its surroundings are hidden by the upper surfaces of the toilet seat 3 and the toilet lid 4.

A hinge block 5 for connecting the toilet seat 3 and the toilet lid 4 to the casing 2 is fixed by fitting a concave portion 5a into a projection 2a provided on the casing.

FIG. 3 shows a modification of the connecting structure shown in FIG. In the figure, a hinge block 5 is composed of a support block 5A and a rotation block 5B.
B is composed of a hinge body 5b having a built-in opening / closing unit (not shown) so as to provide a resistance when the toilet seat 3 and the toilet lid 4 are closed and to operate gently, and a hinge shaft 5d.
The hinge body 5b is rotatable with respect to the hinge shaft 5d. The block 5A is provided with a support hole 5c for inserting the hinge shaft 5d and fixing and supporting them.

FIG. 4 shows a modification of the connecting structure shown in FIG. In the figure, an engagement groove 5e is provided on the hinge shaft, and a projection 5f fitted into the engagement groove 5e is provided to protrude from the inner wall of the block 5A. By this engagement, the hinge shaft 5
d is prevented from easily coming out of the support hole 5c.

In the connecting structure shown in FIGS. 3 and 4, one of the hinge block insertion portions 3a provided at the base end of the toilet seat 3 is fixed so as to rotate integrally with the hinge shaft 5d, and the other hinge block is provided. The insertion portion 3a is rotatably supported on the hinge shaft 5d. Note that the hinge block insertion portion 4a provided at the base end of the toilet lid 4 is
The hinge insertion portion 4a on the opposite side to the portion a is fixed so as to rotate integrally with the hinge shaft 5d, and the other hinge insertion portion 4a is rotatably supported on the hinge shaft 5d.

FIG. 5 is a plan view showing the procedure for assembling the toilet seat device using the connecting structure shown in FIG. (A) shows a state where the toilet seat 3, the support block 5A, and the turning block 5B are disassembled. From this state, in (b), the state is shifted to a state in which the turning block 5B penetrates the hinge block insertion portion 3a from the outside of the toilet seat 3 and the hinge shaft 5d projects inward. From this state, in (c), the hinge shaft 5d is inserted into the support hole 5c of the support block 5A from the direction opposite to the penetration direction.
And the support block 5A and the rotation block 5B are integrated. From this state, in (d), the integrated hinge block 5 is pulled inward until the hinge trunk 5b is completely inserted into the hinge block insertion portion 3a, and in this state, the hinge block insertion of the toilet lid 4 is performed. The portion 4a is arranged so as to be coaxial with the hinge block insertion portion 3a of the toilet seat. At the time of the operation (d), the stopper 3b (bulging portion) is provided at the center of the base end of the toilet seat 3 so that the hinge block 5 is pulled inward too much so as not to be disengaged from the toilet seat 3. . In order to prevent engagement with the toilet seat, the hinge block 5 needs to be formed longer than the interval between the hinge block insertion portion 3a and the stopper 3b. In this state, in (e), the hinge block that has been pulled inward is pushed out again, and the hinge body 5
d is inserted into the hinge block insertion portion 4a. By this series of operations, the toilet seat 3, the toilet lid 4, the support block 5
A, The turning block 5B can be integrated. Thereafter, the concave portion 5a provided in the support block 5A is inserted and fixed to the protrusion 2a of the casing 2, so that it can be used as a toilet seat device. The disassembly is performed in the reverse order.

FIG. 6 is a perspective view showing a connection structure between the support block 5A and the casing 2. As shown in FIG. In the drawing, a cover 5g made of resin or the like is provided on the support block 5A, and a support guide 5i provided slightly concentrically with the support hole 5c is provided with a support guide 5i having substantially the same shape as the support guide 51 provided on the guide 5g. The support block 5A and the cover 5g are integrated by rotatably supporting the rotation hole 5h. A lock claw 5j is provided inside the skirt of the cover 5g, and grips 5k are integrally provided on both sides. The front wall of the support block 5A is provided with a locking groove 2b with which the lock claw 5j is engaged. Note that a second lock claw 5m is provided inside the base end of the side wall of the cover 5g, and a second locking groove 5n in which the second lock claw 5m elastically engages is provided on the side wall of the support block 5A.

FIG. 7 is a sectional view taken along line XX 'of FIG. In order to guide the second lock claw 5m to the second locking groove 5n, a groove 5p is formed in a support hole 5 provided in a side wall of the support block 5A.
It is formed shallower than the second locking groove 5n on a circular arc concentric with c. Further, a raised portion 5q is provided between the second locking groove 5n and the groove 5p so that the lock between the second locking claw 5m and the second locking groove 5n is ensured. As described above, since the auxiliary lock mechanism is formed by elastically engaging the second lock claw 5m and the second locking groove 5n, the lock claw 5j and the locking groove 2b are not elastically engaged but are merely engaged. Therefore, it is easy to adjust the locking force and ensure the durability of the locking claw 5j. This also increases the degree of freedom in design.

FIG. 8 shows the support block 5 in FIG.
It is sectional drawing which shows the connection state of A and the casing 2. As is clear from the figure, in the connected state, the lock claw 5j is engaged with the locking groove 2b, and thus, in this state, the support block 5A and the casing 2 are not disengaged. At this time, the protruding portion 5m of the cover 5g and the support block 5
The rotation direction is also regulated by the second locking groove 5n of A.
When it is desired to release the engagement, put the finger on the handle 5k to release the elastic engagement between the second lock claw 5m and the second locking groove 5n,
By rotating the cover 5g, the engagement between the lock claw 5j and the locking groove 2b is released, and the support block 5A and the casing 2 can be disengaged by lifting the toilet seat 3 and the like upward.

FIG. 9 is a perspective view showing another embodiment of the connecting structure between the support block 5A and the casing 2. As shown in FIG. In the figure, a cover 5g made of resin or the like is provided on the support block 5A, and the support block 5A
Are slidably supported up and down by support guides 5i provided on both sides. A U-shaped notch 5m is provided on the front surface of the support block 5A, and a lock hole 5j 'is provided below the elastic piece 51 surrounded by the notch 5m. A lock hole 5j 'is formed in the protrusion 2a of the casing 2.
Are provided with engaging projections 2b '. FIG. 10 is a cross-sectional view showing a connection state between the support block 5A and the casing 2 in FIG. As is clear from the figure, in the connected state, the locking projection 2b 'is locked in the lock hole 5j', and the elasticity of the elastic piece 51 is suppressed by the cover 5g. Therefore, in this state, the engagement between the support block 5A and the casing 2 is not released. When it is desired to release the engagement, the cover 5g is shifted upward along the support guide 51, and the toilet seat 3 and the like are lifted upward, whereby the elastic piece 51 bends outward, the locking projection 2b 'and the lock hole 5j'.
With the support block 5A and the casing 2
Can be disengaged. The lock hole 5j 'is provided to ensure the engagement, but the present invention is applicable even if it is not provided.

[Brief description of the drawings]

FIG. 1 is a perspective view of a toilet seat device having a mounting structure for a toilet seat and a toilet lid according to the present invention.

FIG. 2 is a schematic sectional view showing a connection structure of a toilet seat 3 and a toilet lid 4 to a casing 2.

FIG. 3 is a modified example of the connecting structure shown in FIG. 2;

FIG. 4 is a modified example of the connection structure shown in FIG. 3;

FIG. 5 is a plan view showing an assembling procedure of the toilet seat device using the connecting structure shown in FIG. 3;

FIG. 6 is a perspective view showing a connection structure between a support block 5A and a casing 2.

FIG. 7 is a sectional view taken along line X-X 'in FIG.

FIG. 8 is a cross-sectional view showing a connection state between a support block 5A and a casing 2 in FIG.

FIG. 9 is a perspective view showing another embodiment of the connection structure between the support block 5A and the casing 2.

10 is a cross-sectional view showing a connection state between a support block 5A and a casing 2 in FIG.

FIG. 11 is a perspective view of a conventional toilet seat device having a mounting structure of a toilet seat and a toilet lid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Casing 2a ... Protrusion 2b ... Locking groove 2b '... Locking protrusion 3 ... Toilet seat 3a ... Hinge block insertion part 3b ... Stopper 4 ... Toilet lid 4a ... Hinge block insertion part 5 ... Hinge block 5A ... Support block 5B ... Rotating block 5a recess 5b hinge body 5c support hole 5d hinge shaft 5e engaging groove 5f projection 5g cover 5h rotating hole 5i support guide 5j locking claw 5j 'locking hole 5k Handle 5l Elastic piece 5m Second lock claw 5n Second engagement groove 5p Groove 5q

Claims (13)

[Claims] 1. A hinge block for rotatably supporting the toilet seat with the base end as a center of rotation is connected to a base end of a toilet seat and / or a toilet lid, and the hinge block is connected to a surface of the casing. In a mounting structure for a toilet seat and / or a toilet lid detachably connected to a side of the toilet seat, the toilet seat includes a projection provided to project from the casing, and a concave portion provided to a hinge block for inserting and fixing to the projection. And / or mounting structure of the toilet lid 2. The hinge block according to claim 1, wherein the hinge block comprises a pivot block for rotatably supporting a toilet seat and / or a toilet lid, and a support block provided with the recess, and the pivot block is pivotable. 2. A mounting structure for a toilet seat and / or a toilet lid according to claim 1, comprising a hinge body and a hinge shaft fixedly supported by said support block. 3. A mounting structure for a toilet seat and / or a toilet lid according to claim 1, further comprising a lock mechanism for locking engagement between the concave portion and the projection. 4. A support guide concentric with the center of rotation of the hinge block is provided, and a cover having a hole having substantially the same shape as the support guide is rotatably attached to the support block by the hole. The mounting structure for a toilet seat and / or a toilet lid according to claim 3, wherein a lock mechanism for locking engagement between the concave portion and the protrusion is provided on the cover. 5. The toilet seat and / or toilet lid according to claim 4, wherein the locking mechanism is performed by engaging a locking claw provided on a cover with a locking groove provided on a casing projection. Mounting structure 6. A mounting structure for a toilet seat and / or a toilet lid according to claim 5, wherein said lock pawl has elasticity, and engagement with said locking groove is elastic engagement. 7. The toilet seat according to claim 5, wherein the second lock pawl is provided on the side wall of the cover, and the auxiliary lock mechanism is constituted by elastic engagement with the second locking groove provided on the side wall of the support block. // Toilet lid mounting structure 8. A hinge guide is provided on a side portion of the hinge block in a vertical direction, and a U-shaped notch and an elastic piece formed so as to be surrounded by the notch are provided on a front surface of the hinge block. The cover covering the elastic piece is attached to the support guide movably up and down, and a projection provided on the casing is provided with a locking projection at a position corresponding to the elastic piece. Mounting structure of toilet seat and / or toilet lid described in 2 9. The support block according to claim 2, wherein a support hole for fixing and supporting the hinge shaft is provided, and a prevention mechanism for preventing the hinge shaft from falling out of the support hole is provided. Mounting structure of the described toilet seat and / or toilet lid 10. An insertion hole into which the rotary block can be inserted is provided on both sides of the base end of the toilet seat and / or the toilet lid, and one of the rotary blocks is non-rotatably fixed to the rotary block and the other is a rotary block. 3. A mounting structure for a toilet seat and / or a toilet lid according to claim 2, wherein the toilet seat and / or the toilet lid are rotatably supported with respect to the vehicle. 11. The connecting relationship between the insertion hole provided on the toilet seat and the rotating block and the connecting relationship between the insertion hole provided on the toilet lid and the rotating block are reversed. 1
Mounting structure of toilet seat and toilet lid described in 0 12. A hinge block for rotatably supporting the toilet seat and the toilet lid around the proximal end of the toilet seat and the toilet lid, and connecting the hinge block to the base of the casing. In the mounting structure of a toilet seat and / or a toilet lid detachably connected to a front surface side, a center of rotation of the toilet seat and a center of rotation of the toilet lid are coaxially arranged. Mounting structure 13. The hinge block according to claim 1, wherein two hinge blocks are provided on the left and right sides, and the hinge block is provided between a central bulging portion at a base end of the toilet seat and a connecting portion of the hinge block at a base end of the toilet seat. 13. The mounting structure for a toilet seat and a toilet lid according to claim 12, wherein the hinge block is arranged longer than the interval between the bulging portion and the connecting portion.