Opening and closing device for a western toilet

Abstract

The present application provides a western toilet opening and closing device. The western toilet opening and closing device needs a special installation member for a toilet seat and a special installation member for a toilet cover. The present application uses a common installation member for the toilet seat and the toilet cover, and provides a western toilet opening and closing device without the special installation member for the toilet seat and the special installation member for the toilet cover. The opening and closing device can open and close the western toilet without touching the shaft of the toilet seat and the toilet cover, and includes a base, a pedal member, a connecting member, and an installation member. The installation member is detachably installed on the upper end of the connecting member, and can be reversely installed in the shaft direction. When the installation member is installed on the toilet cover, the shaft direction is opposite to that when the installation member is installed on the toilet seat.

Description

Technical Field

[0001] This invention relates to an opening and closing device for a Western-style toilet, which, from the perspective of preventing infectious disease infection, allows the user to open and close the toilet lid or toilet seat by stepping on a pedal structure, without touching it with their hands. Background Technology

[0002] A Western-style sit-down toilet has a toilet seat mounted on top of the toilet body, allowing it to open and close. A toilet lid, also mounted on top of the toilet body, covers the toilet seat to close it. It is desirable that the opening and closing mechanism of this type of Western-style sit-down toilet allows the toilet seat and lid to be opened and closed separately without direct hand contact. Several proposals for pedal-operated opening and closing mechanisms for toilet seats and lids have been made (US Patent No. 5,488,743 and Japanese Patent Application Publication No. 2001-87165).

[0003] The opening and closing mechanism of a Western-style toilet, as described in U.S. Patent No. 5,488,743 and Japanese Patent Application Publication No. 2001-87165, involves operating a first pedal structure to open and close the toilet seat, and operating a second pedal structure to open and close the toilet lid. Furthermore, Japanese Patent Application Publication No. 2001-87165... Figure 6 In the middle, the opening and closing device causes the first connecting member (push rod) connected to the toilet seat via the first mounting member to rise and fall to open and close the toilet seat, and causes the second connecting member (push rod) connected to the toilet lid via the second mounting member to rise and fall to open and close the toilet lid.

[0004] Replacing an entire Western-style toilet requires significant construction costs. Therefore, there is a market demand for toilet opening and closing mechanisms that can be installed on existing Western-style toilets. Some of these mechanisms use dedicated mounting components for the toilet seat or lid, connecting them to the existing seat or lid. The toilet seat or lid is opened or closed by raising or lowering the connecting component using a foot pedal. Summary of the Invention

[0005] The aforementioned opening and closing mechanisms for Western-style toilets require mounting components specifically for toilet seats and toilet lids. In contrast, this invention uses mounting components that are universal for both toilet seats and toilet lids, providing an opening and closing mechanism for Western-style toilets that does not require separate mounting components for toilet seats and toilet lids.

[0006] To address the aforementioned issues, the present invention provides an opening and closing device for a Western-style toilet that allows the toilet to be opened and closed without the hand touching the toilet seat and toilet lid, which are supported on the toilet body. The device includes a base, a pedal component, a connecting component, and a mounting component. The base is mounted on the floor; the pedal component is supported on the base and can swing vertically, with an operating lifting step on the front side and an operating lowering step on the rear side; the lower end of the connecting component is supported on the rear side of the operating lowering step and can move by engaging a bearing portion supported on a lower side shaft; the mounting component can be installed on either the toilet seat or the toilet lid and is supported on the upper end of the connecting component by an upper side shaft. The mounting component is installed on the upper end of the connecting component and can be disassembled and installed with the axial direction of the upper side shaft reversed to a position away from the opening and closing shaft. The opening and closing shaft supports the toilet seat or toilet lid. When the mounting component is installed on the toilet lid, the axial direction of the upper side shaft is opposite to the axial direction of the upper side shaft when it is installed on the toilet seat. The mounting component includes a toilet seat mounting plate and a locking structure. When the toilet seat mounting plate is installed on the toilet seat, it overlaps and is installed under the toilet seat. When the toilet seat is installed, the locking structure locks the lower edge of the toilet seat. When the toilet seat is installed, the axial direction of the upper side shaft is reversed to avoid the toilet seat mounting plate interfering with the rotation range of the toilet seat. The engaging bearing portion allows the lower side shaft to move between a rotating position and a retracted position. The rotating position is located at the rotation center of the lower end of the connecting component, and the retracted position is away from the rotation center. The lower side shaft is less constrained when held in the retracted position than when held in the rotating position. If the center of the lower end of the connecting component and the center of the upper side shaft are connected in a straight line, the retracted position is located further outward than the center of the lower end of the shaft.

[0007] Furthermore, according to the opening and closing device of the present invention, the toilet seat mounting plate can be attached to the underside of the toilet seat using double-sided adhesive.

[0008] Furthermore, the toilet seat or toilet lid of the Western-style toilet of the present invention is equipped with the opening and closing device as described above.

[0009] In the opening and closing device of the present invention, the mounting member is installed on the upper end of the connecting member and can be disassembled and reassembled. Furthermore, the axial direction can be reversed when mounted on the toilet seat, and the axial direction when mounted on the toilet seat is opposite to that when mounted on the toilet cushion. Therefore, by reversing the axial direction, interference of a portion of the mounting member with the toilet cushion can be avoided when the toilet seat rotates. Thus, in the opening and closing device provided by the present invention, the mounting member mounted on the toilet cushion can also be directly mounted on the toilet seat. When the mounting member is actually mounted on the toilet seat, interference of the toilet cushion mounting plate with the range of rotation of the toilet seat can be avoided. Therefore, the mounting member used in the opening and closing device provided by the present invention can be used with toilet cushions or toilet seats having a large-area toilet cushion mounting plate. In the aforementioned case, the mounting member may have a shaft support and a locking structure mounting portion. The shaft support is adjacent to the toilet cushion mounting plate; the locking structure mounting portion overlaps the shaft support, allowing the lower edge of the toilet seat to be secured by a locking structure. Furthermore, when the user directly lifts the toilet seat or toilet lid by hand, the lower side shaft of the engaging bearing portion moves from a rotating position to a retracted position, making it less constrained when in the retracted position than when in the rotating position. Therefore, the force exerted on the mounting member by the connecting member can be suppressed, making the toilet seat or toilet lid less prone to localized damage, or preventing the mounting member from easily detaching from the toilet seat or toilet lid. In this way, the opening and closing device for a Western-style toilet provided by this invention reduces the force applied to the mounting member when the user directly lifts the toilet seat or toilet lid by hand. Moreover, when the lifting force is applied to the lower side shaft by the connecting member, the lower side shaft of the engaging bearing portion moves from a rotating position to a retracted position.

[0010] In the opening and closing device of the present invention, the mounting components can be easily installed on various toilet seats by means of double-sided adhesive.

[0011] The Western-style toilet of this invention can be modified by using a small and simple opening and closing device, allowing the toilet seat or lid to be opened and closed without touching it. By incorporating the opening and closing device, even existing Western-style toilets can reduce the chance of directly touching the toilet seat or lid, thus preventing the spread of various infectious diseases through the toilet seat and lid. Attached Figure Description

[0012] Figure 1 This is a perspective view of a Western-style toilet with an opening and closing device according to one embodiment of the present invention.

[0013] Figure 2 This is an instruction diagram of a Western-style toilet. The toilet seat of a Western-style toilet is equipped with an opening and closing device. (a) is a side view of the toilet seat in the open state, and (b) is a side view of the toilet seat in the closed state.

[0014] Figure 3 yes Figure 2 A partial 3D view of the mounting components of the opening and closing device and the mounting part of the toilet seat in a Western-style toilet.

[0015] Figure 4 yes Figure 2 An exploded 3D diagram of the opening and closing mechanism in a Western-style toilet.

[0016] Figure 5 The diagram illustrates the construction of the fastening bearing assembly. (a) is a plan view of the lower end of the connecting member; (b) is a cross-sectional view of the connecting member along line EE.

[0017] Figure 6 This is an illustration of the operation of the bearing engagement part. (a) shows the state in which the lower end side shaft returns to the claw during the upward movement of the connecting member; (b) shows the state in which the lower end side shaft disengages from the claw due to overload.

[0018] Figure 7 These are diagrams illustrating the operation of a Western-style toilet with an opening and closing mechanism for the toilet seat. (a) is a side view of the toilet seat in the open position, and (b) is a side view of the toilet seat in the closed position.

[0019] Figure 8 yes Figure 7 A partial 3D view of the mounting components of the opening and closing device and the mounting part of the toilet seat in a Western-style toilet.

[0020] Figure 9 yes Figure 7 A three-dimensional diagram of the mounting components of the opening and closing mechanism in a Western-style toilet.

[0021] Figure 10 yes Figure 7 An exploded perspective view of the mounting components of the opening and closing mechanism in a Western-style toilet. Detailed Implementation

[0022] The following describes in detail, with reference to the illustrations, an opening and closing device for a Western-style toilet according to one embodiment of the present invention, and a Western-style toilet according to one embodiment of the Western-style toilet equipped with the opening and closing device.

[0023] like Figure 1 As shown, the Western-style toilet 1 is a flushing toilet with a water tank 5 connected to the rear of the toilet body 2, and the user sits down from the front to use the toilet. The Western-style toilet 1 has a toilet seat 3 on top of the toilet body 2, which can be opened and closed using an opening and closing shaft 3a. Additionally, the toilet seat 3 is lowered and the toilet lid 4 is opened and closed using an opening and closing shaft 4a. The opening and closing shafts 3a and 4a can have a built-in spring structure that generates torque to lift the toilet seat 3 and the toilet lid 4.

[0024] The Western-style toilet 1 is equipped with an opening and closing device 10, which allows the toilet seat 3 to be opened and closed without directly touching the toilet seat 3 with your hands. For example... Figure 2 As shown in (a), the user raises the foot pedal 15d by pressing down on the pedal member 15b in the direction of arrow R1, causing the connecting member 12 to rise in the direction of arrow R2 and opening the toilet seat 3. Additionally, as... Figure 2 As shown in (b), the user lowers the foot pedal 15e by stepping on the pedal component 15b in the direction of arrow R3, causing the connecting component 12 to descend in the direction of arrow R4 and lower the toilet seat 3.

[0025] like Figure 3 As shown, the opening and closing device 10 is assembled by mounting the mounting member 11 onto the toilet seat 3 of the Western-style toilet 1, thus assembling the Western-style toilet 1 equipped with the opening and closing device 10 for the toilet seat 3. The mounting member 11 has a toilet seat mounting plate portion 11b that is attached to the underside 3b of the toilet seat 3 using double-sided adhesive 11a.

[0026] like Figure 1 As shown, the opening and closing device 10 allows the toilet seat 3 or toilet lid 4 of the toilet body 2, which is supported by a shaft, to be opened and closed without touching it by hand. Figure 4 As shown, the base 15a is mounted on the floor. The pedal component 15b is supported on the base 15a, with an operating raising step 15d on the front side of the support and an operating lowering step 15e on the rear side. The connecting component 12 is supported at its lower end on the pedal component 15b via a lower side shaft 14 on the rear side of the operating lowering step 15e. The mounting component 11 is supported at its upper end on the connecting component 12 via an upper side shaft 13. The mounting component 11 has a toilet seat mounting plate 11b that can be overlapped and mounted on the underside 3b of the toilet seat 3. The toilet seat mounting plate 11b is adhered to the underside 3b of the toilet seat 3 using double-sided adhesive 11a.

[0027] The pedal structure 15 uses a base 15a and a pedal component 15b to form a simple seesaw shape. When the pedal structure 15 is pressed down, the rising pedal part 15d allows the toilet seat 4 or toilet seat 3 to rotate and lift; when pressed down again, the lowering pedal part 15e allows the toilet seat 4 or toilet seat 3 to rotate and close. The pedal structure 15 has a base 15a and a pedal component 15b made of resin material, with a lower side shaft 14 supported on the rotating end of the pedal component 15b. The base 15a has a fulcrum 15c for a metal shaft and is attached to the floor 6 with double-sided adhesive. The fulcrum 15c can be replaced with an object forming the center of rotation instead of an shaft.

[0028] like Figure 1As shown, the mounting component 11 is fixed at a position away from the opening / closing shaft 3a of the toilet seat 3. The upper end 12a of the connecting component 12 is supported on the mounting component 11 by an upper side shaft 13. The toilet seat 3 and mounting component 11, which are supported on the toilet body 2, the connecting component 12, which is supported on the upper side shaft 13 and the lower side shaft 14, and the pedal component 15b, which is supported on the base 15a, form a four-segment connected structure that is linked together. Figures 4-6 The symbol 12b in the middle represents the lower end of the connecting member 12.

[0029] like Figure 1 As shown, the Western-style toilet 1 has an opening and closing device 10 for the toilet seat 3 mounted on it via a mounting component 11. For example... Figures 3-4 As shown, the mounting component 11 has a positioning plate portion 11c that abuts against the side of the toilet seat 3 for positioning, and a toilet seat mounting plate portion 11b that can be attached to the bottom 3b of the toilet seat 3 using double-sided adhesive 11a.

[0030] like Figure 2 As shown in (a), the user raises the foot pedal 15d by pressing down on the pedal component 15b in the direction of arrow R1, causing the connecting component 12 to rise in the direction of arrow R2 and opening the toilet seat 3. After pressing down on the foot pedal 15d, the pedal component 15b rotates in the direction of lifting the lower side shaft 14, with the fulcrum 15c as the center. In this way, the connecting component 12 rises and lifts the toilet seat 3 from the upper side shaft 13 with the help of the mounting component 11, so that the toilet seat 3 is lifted off the toilet body 2.

[0031] like Figure 2 As shown in (b), the user lowers the foot pedal 15e by pressing down on the pedal member 15b in the direction of arrow R3, causing the connecting member 12 to descend in the direction of arrow R4 and lower the toilet seat 3. After pressing down on the foot pedal 15e, the pedal member 15b rotates in the direction of lowering the lower side shaft 14, with the fulcrum 15c as the center. In this way, the connecting member 12 descends and the toilet seat 3 is lowered from the upper side shaft 13 by means of the mounting member 11, overlapping with the toilet body 2.

[0032] The upper side shaft 13 is made of stainless steel and has a head 13a on the rear end side and an annular groove 13b on the front end side. The rear end side of the upper side shaft 13 is inserted into the bearing hole 13c of the mounting member 11 and the head 13a abuts against it. The front end side of the upper side shaft 13 is inserted into the bearing hole 13d of the connecting member 12. A stop ring 13e is embedded in the annular groove 13b.

[0033] The lower end side shaft 14 is formed into a tube shape with resin, having a head 14a at the rear end and a snap-fit ​​joint 14b at the front end. The lower end side shaft 14 is designed with a low elastic modulus, allowing for greater elastic deformation than the connecting member 12 and the pedal member 15b. The lower end side shaft 14 passes through the bearing holes 14c, 14c of the pedal member 15b and the snap-fit ​​bearing portion 17 of the connecting member 12, so that the head 14a and the snap-fit ​​joint 14b engage with the side of the pedal member 15b.

[0034] Furthermore, if the user does not notice the pedal structure 15 or ignores its existence, they may directly lift the toilet seat 3 from the toilet body 2 by hand. In this case, the four-segment connecting structure consisting of the pedal member 15b supported on the base 15a, the toilet seat 3 supported on the toilet body 2, and the connecting member 12 will move together without affecting the opening of the toilet seat 3. However, in this situation, a large force is applied to the mounting member 11, which has a small radius of rotation, on the toilet seat 3. In addition, when the user operates the pedal structure 15 to lower the toilet seat 3, pressing down the lowering foot pedal 15e will also apply a large force to the mounting member 11. If a large force is applied to the mounting member 11, the double-sided adhesive 11a may peel off, causing the mounting member 11 to detach from the toilet seat 3. In addition, when the force is transmitted from the upper side shaft 13 to the lower side shaft 14 via the connecting member 12, the lower side shaft 14 may undergo plastic deformation.

[0035] like Figure 5 As shown in (a), the opening and closing device 10 of this embodiment has a locking bearing portion 17 at the lower end of the connecting member 12. The locking bearing portion 17 keeps the lower end side shaft 14 moving between a rotational position P1, located at the rotation center of the shaft at the lower end of the connecting member 12, and a retracted position P2, which is away from the rotation center. The locking bearing portion 17 makes the radius of the bearing portion 17a at the rotational position P1 equal to the radius of the lower end side shaft 14, and also makes the radius of the bearing portion 17b at the retracted position P2 greater than the radius of the lower end side shaft 14. Therefore, the lower end side shaft 14 is not held tightly in the retracted position P2 compared to the rotational position P1.

[0036] On the straight line connecting the lower end of the connecting member 12 (the center of the rotation position P1) and the upper side shaft 13, the retraction position P2 is located further outward from the lower end of the connecting member 12 (the center of the rotation position P1). Therefore, when the toilet seat 3 is lifted to pull the connecting member 12 upward, or when the lowering foot pedal 15e is pressed down to pull the lower side shaft 14 downward, the lower side shaft 14 moves from the rotation position P1 to the retraction position P2, releasing the load on the connecting member 12.

[0037] like Figure 5As shown in (a), the engaging bearing portion 17 is provided with elastically deformable claw portions 17c, 17c made of resin material between the rotating position P1 and the retracted position P2. Figure 5 As shown in (b), the engaging bearing portion 17 has a pair of L-shaped claw portions 17c, 17c on both its inner and outer surfaces to regulate the movement of the lower side shaft 14. Therefore, when a large force is applied to the mounting member 11, the engaging bearing portion 17 disengages due to the elastic deformation of the claw portions 17c, 17c, causing the lower side shaft 14 to move from the rotating position P1 to the retracted position P2. If the load on the engaging bearing portion 17 is within the allowable range, the lower side shaft 14 remains in the rotating position P1; if the load exceeds the allowable range, the claw portions 17c, 17c will elastically deform, causing the lower side shaft 14 to move from the rotating position P1 to the retracted position P2. The engagement of the claw portions 17c, 17c with the lower side shaft 14 keeps the lower side shaft 14 in the rotating position P1, while the lower side shaft 14 moves between the rotating position P1 and the retracted position P2 due to elastic deformation. The pair of opposing circumferential claws 17c, 17c of the engaging bearing portion 17, with elastic deformation, regulate the position of the lower end side shaft 14 between the rotational position P1 and the retracted position P2, allowing it to move in both directions. Thus, the engaging bearing portion 17 is constructed to achieve reliable operation with a simple structure.

[0038] Furthermore, the engaging bearing portion 17 automatically returns to its original position during normal user operation. For example... Figure 6 As shown in (a), when the lower end side shaft 14 is in rotational position P1, after applying a force in the direction of arrow R5, it will behave as follows. Figure 6 As shown in (b), the lower end side shaft 14 moves to the retracted position P2, thereby mitigating the force applied to the lower end side shaft 14 and the connecting member 12. Then, as... Figure 6 As shown in (b), when the lower side shaft 14 is in the retracted position P2, after applying a force in the direction of arrow R6, it will behave as follows. Figure 6 As shown in (a), the lower side shaft 14 moves to the rotation position P1 and restores the function of the lower side shaft 14 and the connecting member 12 in transmitting force.

[0039] In this way, since the user directly lifts the toilet seat 3 by hand and moves it to the lower side shaft 14 in the retracted position P2, the user can return to the rotating position P1 by pressing the pedal structure 15 to raise the foot pedal 15d. Furthermore, even when the lower side shaft 14 is in the retracted position P2, although there may be a wobbling sensation during operation, the user can still maintain the function of raising and lowering the toilet seat 3 by operating the pedal structure 15.

[0040] In addition, such as Figure 8As shown, the mounting member 11 can also be installed on the toilet seat 4. However, the mounting member 11 has a large and long toilet seat mounting plate portion 11b that supports the toilet seat 3 to bear the user's weight and prevent it from falling off the toilet seat 3. Therefore, when the mounting member 11 is installed on the toilet seat 4, the toilet seat mounting plate portion 11b must not interfere with the toilet seat 3 so that the toilet seat 3 can be opened and closed independently. Therefore, on the opening and closing device 10, the mounting member 11 is detachable from the upper end of the connecting member 12 and can be installed in the opposite direction of the axis, such as... Figure 8 As shown, the axial direction of the upper side shaft 13 when installing the toilet seat 4 is as follows: Figure 3 The axial direction is reversed when the toilet seat 3 is installed. That is, when the mounting member 11 is installed on the toilet seat 4, by reversing the axial direction, the toilet seat mounting plate 11b is prevented from interfering with the rotation range of the toilet seat 3.

[0041] Figures 2-4 The mounting component 11 of the opening and closing device 10 shown is as follows: Figures 7-10 As shown, by installing with the axis in the opposite direction, it can be used on toilet seat 3 and toilet lid 4. Figures 7-10 Is Figures 2-4 On a Western-style toilet 1, a toilet seat 4 replaces the toilet seat 3 and is equipped with an opening and closing device 10.

[0042] Mounting member 11 includes a shaft support 11n and a locking structure mounting portion 11e. The shaft support 11n is disposed adjacent to the toilet seat mounting plate portion 11b; the locking structure mounting portion 11e overlaps the shaft support 11n and is disposed thereon, and a locking structure 11d can be installed thereon, which locks the lower edge 4b ​​of the toilet seat 4 to fix the toilet seat 4. Figure 7 As shown, the Western-style toilet 1 has an opening and closing device 10 for the toilet seat 4 mounted on it via a mounting component 11. Figure 8 As shown, the mounting component 11 is fixed to the toilet seat 4 by locking the lower edge 4b ​​of the toilet seat 4 with the locking structure 11d. Figures 9-10 As shown, the locking structure 11d is assembled onto the locking structure mounting portion 11e, which is provided on the same side as the toilet seat mounting plate portion 11b of the mounting member 11. The locking structure mounting portion 11e keeps the nut 11i, which is inserted from above, from rotating. The locking structure mounting portion 11e is a nut retainer for securing the nut 11i to the lower edge 4b ​​of the toilet seat 4.

[0043] One end of the mounting member 11 is bent into an L-shape to form a fixed plate 11f. A movable plate 11g is positioned opposite the fixed plate 11f. Rubber plates 11h and 11h are adhered to the opposite sides of the fixed plate 11f and the movable plate 11g. The threaded engagement of the mounting screw 11j in the nut 11i is freely rotatably inserted into the screw retaining part 11k of the movable plate 11g through the opening 11m of the locking structure mounting part 11e. Therefore, by rotating the mounting screw 11j, the locking structure 11d locks the fixed plate 11f and the movable plate 11g to the lower edge 4b ​​of the toilet seat 4 via the rubber plates 11h and 11h. In this way, the mounting member 11 is firmly fixed to the lower edge 4b ​​of the toilet seat 4.

[0044] The opening and closing device 10 can be installed on both the toilet seat 3 and the toilet lid 4 of the Western-style toilet 1 using the same mounting component 11. Therefore, manufacturers or distributors of Western-style toilets can provide a series of Western-style toilets 1 with a unified design, including those with only the opening and closing device 10 for the toilet seat 3 and those with only the opening and closing device 10 for the toilet lid 4. Furthermore, the opening and closing devices 10 for the toilet seat 3 and the toilet lid 4 can be sold in the same packaging without discarding any parts (mounting component 11).

[0045] like Figure 1 As shown, the operating rising pedal portion 15d of the pedal structure 15 has a mark 17d indicating the toilet seat 3 is in the open state. The operating falling pedal portion 15e of the pedal structure 15 has a mark 17e indicating the toilet seat 3 is in the closed state. Therefore, the user can compare the states of the toilet body 2 and the toilet seat 3 with the marks 17d and 17e to select the correct pedal without stepping on the wrong pedal. The user can correctly and quickly select to operate the toilet lid 4 or the toilet seat 3 according to the purpose of operation.

[0046] As described above, the present invention can be sold as a bundled product with a uniformly designed Western-style toilet, compatible with Western-style toilet models that only have a toilet seat opening and closing mechanism, and Western-style toilet models that only have a toilet seat opening and closing mechanism. Furthermore, the opening and closing mechanism provided by the present invention can be used with both the toilet seat and the toilet lid. The opening and closing mechanism of the present invention can be installed not only on existing Western-style toilets but also on new Western-style toilets that already have an opening and closing mechanism. The opening and closing mechanism of the above-described embodiment is symmetrical when viewed from the front side, therefore it can be installed on either the left or right side of the toilet body. The mounting components are positioned far from the opening and closing shaft, therefore it is not necessary to replace the original opening and closing shaft and components. The opening and closing mechanism for the toilet seat and the opening and closing mechanism for the toilet lid can also be installed separately. In this way, more parts can be shared between the opening and closing mechanisms for the toilet lid and the toilet seat.

Claims

1. An opening and closing device for opening and closing a Western-style toilet seat or toilet lid without touching the toilet seat or toilet lid pivotally supported on the toilet body, comprising: A base, which is set on the floor; The pedal component is pivoted on the base and can swing up and down. When pivoted, the front side is provided with an operation lifting pedal and the rear side is provided with an operation lowering pedal. A connecting member, the lower end of which is pivotally supported on the rear side of the operating lowering pedal, and is movable by means of a fastening bearing portion pivotally supported on the lower end side shaft; and The mounting component is mounted on either the toilet seat or the toilet lid and is supported at the upper end of the connecting component by an upper side shaft. in, The mounting component is installed on the upper end of the connecting component and can be disassembled and assembled. The axial direction of the upper side shaft can be reversed and installed away from the opening and closing shaft. The opening and closing shaft supports the toilet seat or the toilet lid. When the mounting component is installed on the toilet lid, the axial direction of the upper side shaft is opposite to the axial direction of the upper side shaft when it is installed on the toilet seat. The mounting component has a toilet seat mounting plate and a locking structure. When the toilet seat mounting plate is installed on the toilet seat, it overlaps and is installed under the toilet seat. When the toilet seat is installed, the locking structure locks the lower edge of the toilet seat. When the toilet seat is installed, the axial direction of the upper side shaft is reversed to avoid the toilet seat mounting plate interfering with the rotation range of the toilet seat. The engaging bearing portion allows the lower side shaft to move between a rotating position and a retracted position. The rotating position is located at the rotation center of the lower end of the connecting component, and the retracted position is away from the rotation center. The lower side shaft is less constrained when held in the retracted position than when held in the rotating position. If the axis center of the lower end of the connecting component and the axis center of the upper side shaft are connected as a straight line, the retracted position is located further outward than the axis center of the lower end of the connecting component.

2. The opening and closing device as described in claim 1, wherein the toilet seat mounting plate can be attached to the underside of the toilet seat using double-sided adhesive.

3. A Western-style toilet, wherein the toilet seat or toilet lid is equipped with the opening and closing device as described in claim 1 or 2.

Images