JP6551975B2 - Toilet seat device - Google Patents

Description

  The present invention relates to a toilet seat device.

  2. Description of the Related Art Conventionally, there is known a toilet seat device including a toilet seat that can rotate between a standing posture and a lying posture on the upper surface side of a toilet body. The toilet seat is fixed to the apparatus main body fixed to the upper surface side of the toilet main body in a rotatable manner. The toilet seat device is provided with a hinge portion that rotatably supports the toilet seat.

  Among the toilet seat devices of this type, there is known a hinge mechanism provided with a lock mechanism for holding the toilet seat in the upright posture. For example, the locking mechanism of the toilet seat device described in Patent Document 1 below includes a rotating roller that rotates integrally with the rotating shaft of the hinge portion, and a fixed roller fixed to the casing. The rotating roller is provided on the outer peripheral surface of the rotating shaft, and the fixed roller is fixed inside the casing surrounding the rotating shaft. The fixed roller is allowed to be displaced in the radial direction while being restricted from being displaced in the circumferential direction. Then, in the laid-down posture of the toilet seat, the fixed roller and the rotating roller are separated by about 90 degrees along the rotation direction of the rotation shaft, and when the toilet seat approaches the standing posture, the rotating roller slides on the fixed roller, and the toilet seat is erected When in the posture, the rotary roller passes over the fixed roller and is engaged with the fixed roller so that the standing posture is maintained.

JP, 2009-5813, A

  However, since the lock mechanism having the above-described configuration is locked at the hinge portion that is the rotation center of the toilet seat, a large locking force is required to hold the toilet seat in a standing posture. For this reason, for example, it is difficult to hold the toilet seat in a standing posture inclined at 90 degrees or less, and improvement has been desired.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a toilet seat device including a lock mechanism capable of holding a toilet seat in an upright posture with a small locking force. .

The toilet seat device according to the present invention comprises a device main body fixed to the upper surface side of the toilet main body, and a toilet seat fixed to the device main body in a form rotatable on the upper surface side of the toilet main body. It includes a hinge portion for supporting the toilet seat rotatably, and a lock mechanism for holding the seat to the upright position has a lockable locking portion and the lock receiving portion to each other, wherein the apparatus main body, the toilet A tank for storing cleaning water; and a tank cover for covering the periphery of the tank , so that the lock portion rotates together with the toilet seat and is engaged with the lock receiving portion at a position away from the hinge portion. It has become.

  According to the present invention, since the lock mechanism for holding the toilet seat in the standing posture is locked at a position away from the hinge portion (that is, the rotation center), the toilet seat is held in the standing posture with a small locking force. be able to.

It is a toilet seat apparatus in a present Example, Comprising: The perspective view which shows the state fixed to the toilet bowl main body The perspective view which shows the toilet seat in the state where the connection part and the toilet seat fixed frame were attached An exploded perspective view showing a hinge part on the first connection part side The perspective view which shows a mode that a cap is attached to the accommodation recessed part in which the hinge part by the side of the 1st connection part was accommodated. An exploded perspective view showing the hinge part on the second connection part side The perspective view which shows a mode that a cap is attached to the accommodation recessed part in which the hinge part by the side of the 2nd connection part was accommodated. The perspective view which shows the back side of the toilet seat apparatus of the state fixed to the toilet bowl main body Partially enlarged sectional view showing a horizontal section of the hinge portion of the toilet seat device Side view showing the toilet seat apparatus in a state where the toilet seat is in the laid posture Partially enlarged cross-sectional view of the toilet seat device showing the lock mechanism in the state where the toilet seat is in the laid-back posture Partially enlarged rear view of the toilet seat device showing the lock mechanism in the state in which the toilet seat is in the lying posture Side view showing the toilet seat apparatus in a state where the toilet seat is in the standing posture Partially enlarged rear view of the toilet seat device showing the lock mechanism in the state where the toilet seat is in the standing posture Partially enlarged rear view of the toilet seat device showing the lock mechanism in the state where the toilet seat is in the standing posture

Preferred embodiments of the present invention are shown below.
In the toilet seat device according to the present invention, the lock mechanism may include an arm portion protruding outward from the toilet seat, and the lock portion may be provided in the arm portion. According to such a configuration, since the locking mechanism is locked at a position further away from the hinge portion than when the locking mechanism is locked inside the toilet seat, for example, the toilet seat can be held with a smaller locking force. It can be held in a standing posture.

In the toilet seat device of the present invention, the tank cover may cover the lock receiving portion . According to such a configuration, since the lock receiving portion can be hidden, the appearance can be improved.

  Moreover, the toilet seat apparatus of this invention is good also as what contains the damper apparatus which provides resistance to rotation of the said toilet seat inside the said toilet seat. Here, the damper device which is not provided with the lock mechanism can be made smaller than that which is provided with the lock mechanism. Therefore, the damper device can be accommodated inside the toilet seat to improve the appearance.

  In the toilet seat device of the present invention, the center of gravity of the toilet seat may be located forward of the hinge portion in the standing posture. According to such a structure, since a space can be made behind the toilet seat in the standing posture, the degree of freedom of the shape of the apparatus main body can be increased.

<Example>
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.
The toilet seat apparatus M according to the present embodiment is fixed to the apparatus main body 10 in such a manner that the apparatus main body 10 is fixed to the upper surface side of the toilet body 1 and the upper surface side of the toilet body 1 can be rotated between a standing posture and a lying posture. And a toilet seat 30. The toilet body 1 has a toilet bowl 2, and the toilet seat 30 rotates on the upper surface of the toilet bowl 2 between a lying state and an upright state.

The apparatus main body 10 includes a cleaning tank 11, and a backrest member 12 is fixed to the front surface of the cleaning tank 11.
The washing tank 11 includes a tank (not shown) that stores toilet flush water and a tank cover 14 that covers the periphery of the tank. The tank cover 14 functions as a casing that covers a lock receiving portion 62 described later.

  The tank cover 14 is made of synthetic resin, has a peripheral wall 15 that covers the left and right sides and the rear side of the tank, and includes a back member 12 on the front side and a front wall 16 that covers the lower side of the back member 12. It is done. In addition, a lid member 17 is provided on the upper surface side of the tank cover 14. In a state where the cover member 17 is attached to the tank cover 14, the upper surface of the tank cover 14 is an inclined surface that gradually decreases from the front end toward the rear end.

  The backrest member 12 is formed in a substantially square thick plate shape having a predetermined thickness by an elastic material, and has a cushioning property. The backrest member 12 has a rectangular shape that is long in the lateral direction when viewed from the front, and the lower end thereof is disposed close to the upper surface of the toilet seat 30. The backrest member 12 covers an opening formed on the front side of the tank cover 14.

  The backrest member 12 is, as shown in FIGS. 8 and 9, at the upper side (hereinafter referred to as a backrest upper portion 12A) and the lower side (hereinafter referred to as a lower backrest) at a position slightly lower than the center in the vertical direction. The gradient is assumed to be different for each case (referred to as 12B). In a state in which the backrest member 12 is attached to the tank cover 14, the backrest lower portion 12B is arranged substantially vertically, and the backrest upper portion 12A is inclined backward and upward.

  The backrest member 12 is fixed to the tank cover 14 and a frame 20 disposed in the tank cover 14 by a plurality of mounting screws. The frame 20 is fixed to the toilet body 1. As shown in FIG. 7, the frame 20 is made of metal, and as illustrated in FIG. A frame 22 and a pair of upper and lower horizontal frames 23 bridged between a pair of left and right vertical frames 22 are provided.

  The mounting surface portion 21 has a plate shape, and is formed with a through hole through which a mounting bolt (not shown) can penetrate downward. The mounting bolts penetrating the mounting surface portion 21 are respectively inserted into fixing holes (not shown) provided on the upper surface of the rear portion of the toilet body 1, and the nut 10 is tightened from below to fix the device body 10 to the toilet body 1. Be done.

  The pair of left and right vertical frames 22 are joined to the left and right ends of the mounting surface 21. The pair of vertical frames 22 are arranged at both end portions in the width direction of the toilet body 1 in a state where the toilet seat device M is fixed to the toilet body 1.

  The horizontal frame 23 is connected to the upper end portion and the middle portion of the vertical frame 22. A toilet seat 30 is fixed to a lateral frame 23 (hereinafter referred to as a toilet seat fixing frame 23A) connected to the intermediate portion via a connecting portion 50. To both ends in the left-right direction of the toilet seat fixing frame 23A, a fixed portion 24 to which the connecting portion 50 is fixed is suspended.

  At the upper edge of the toilet seat fixing frame 23A, as shown in FIG. 2, a flange portion 26 having a substantially horizontal plate surface is provided. The flange portion 26 is provided over the substantially entire width on the rear surface side of the toilet seat fixing frame 23A. Both end portions in the left-right direction of the flange portion 26 constitute a spring support portion 27 that supports the lower end of the coil spring S. The coil spring S elastically lifts the toilet seat 30 so that a part of the leg 34 floats from the upper surface of the toilet body 1 in the lying posture. The spring support portion 27 is formed with a fitting hole 29 through which the end of the stem 28 inserted inside the coil spring S can be fitted.

The toilet seat 30 has a rectangular shape that is slightly longer in the front-rear direction as a whole, and a substantially oval opening 31 that is longer in the front-rear direction is formed at the center.
As shown in FIG. 8, the toilet seat 30 includes a front member 32 and a back member 33, and a cavity is formed between the front member 32 and the back member 33. A heating element made of nichrome wire (not shown) and an aluminum sheet, which generates heat when energized, is attached to the inner surface of the front member 32. In addition, the back member 33 is provided with a plurality of (four in this embodiment) leg portions 34 that can come into contact with the upper surface of the toilet bowl 2 in the lying posture of the toilet seat 30. The legs 34 are provided on the front, rear, left and right with the opening 31 as the center.

  As shown in FIG. 9, the toilet seat 30 includes a toilet seat body 30 </ b> A disposed along the upper surface of the toilet body 1 in a lying posture and a toilet seat rear end 30 </ b> B that rises substantially perpendicular to the upper surface of the toilet body 1. Have. The toilet seat rear end portion 30B is configured to stand at substantially the same height over the entire width of the toilet seat 30.

  The toilet seat main body portion 30A has a shape in which the dimension in the vertical direction is gradually reduced (thinned) from the rear end to the front end in the fallen posture of the toilet seat 30. The back surface (bottom surface) of the toilet seat main body portion 30A is disposed substantially horizontally in the laid posture of the toilet seat 30, and the front surface (upper surface) is inclined so that the front end side is slightly lowered.

  In the standing posture of the toilet seat 30, as shown in FIGS. 12 and 13, the back surface of the toilet seat body 30 </ b> A rises substantially vertically, and the toilet seat rear end 30 </ b> B is arranged substantially horizontally. The toilet seat main body 30A in the upright position of the toilet seat 30 is disposed on the front side away from the backrest member 12, and the distance between the toilet seat main body 30A and the backrest member 12 in the front-rear direction is larger at the upper side than the lower side. . The toilet seat rear end portion 30 </ b> B in the upright position of the toilet seat 30 is disposed along the lower end of the backrest member 12. The position of the center of gravity of the toilet seat 30 is located in front of the hinge portion H (the direction in which the toilet seat 30 falls) in the standing posture.

  On the back surface (back member 33) of the toilet seat rear end portion 30B, as shown in FIGS. 12 and 13, an inclined portion 35 is provided that is inclined downward in the standing posture of the toilet seat 30. The inclined portion 35 is formed substantially throughout the width direction of the toilet seat 30. In addition, the projecting edge part 36 which protrudes so that the inclination part 35 may be hidden when the toilet seat 30 is side view is provided in the both ends in the width direction of the inclination part 35. As shown in FIG.

  As shown in FIG. 8, the toilet seat rear end portion 30 </ b> B is provided with a hinge portion H that rotatably supports the toilet seat 30. The hinge portions H are provided at both ends in the left-right direction of the toilet seat rear end portion 30B. The hinge part H is accommodated in an accommodation recess 37 formed in the toilet seat rear end 30B. The hinge portion H is covered by a cap 38 attached to the housing recess 37. The housing recess 37 is provided with a plurality of screwing portions 39 for screwing the cap 38 and the like.

  In one of the left and right housing recesses 37, as shown in FIGS. 3 and 4, a damper device 41 that resists the rotation of the toilet seat 30 is housed. The damper device 41 is accommodated in the damper case 42 and is fixed to the housing recess 37. The wall 45 of the damper case 42 is formed with a shaft through hole 46 through which the shaft 41A of the damper device 41 penetrates. The damper case 42 is integrally provided with an arm portion 63 described later.

  A hinge fixing member 43 is accommodated in the other of the pair of left and right accommodation recesses 37 as shown in FIGS. 5 and 6. The hinge fixing member 43 has a bearing portion 44 into which a shaft portion 58 of the second connecting portion 50B described later can be fitted, and is fixed to the housing recess 37. The bearing portion 44 has a cylindrical shape that can be fitted to the shaft portion 58. The bearing portion 44 is divided with respect to the shaft portion 58 so as to be fitted from both radial sides. The bearing portion 44 is divided into a bearing part 43A fitted in the housing recess 37 and a body part 43B screwed to the housing recess 37.

  On both left and right sides of the toilet seat rear end 30B, there are provided connecting portions 50 that span between the toilet seat 30 and the apparatus main body 10 (see FIG. 2). The pair of left and right connecting portions 50 both protrude rearward from the toilet seat rear end portion 30B and are configured to rise upward.

  The connection portion 50 is made of synthetic resin, and a joint portion 51 to be joined to the toilet seat 30 is provided at the lower end portion (see FIG. 8). The joint portion 51 is accommodated in an accommodation recess 37 provided in the toilet seat 30 and constitutes a hinge portion H. The connecting portion 50 protrudes rearward from an opening 37 </ b> A formed on the rear surface of the housing recess 37.

  As shown in FIG. 2, a spring pressing portion 52 that presses the upper end of the coil spring S is provided at the upper end portion of the connecting portion 50. The spring retainer 52 is arranged to face the spring support 27 of the toilet seat fixing frame 23A in the vertical direction. A through hole 53 through which the mandrel 28 inserted through the inside of the coil spring S can penetrate is formed in the spring holding portion 52 in the vertical direction. The mandrel 28 is fixed by bringing the head portion 28 A into contact with the upper surface of the spring pressing portion 52 and fitting the E-ring below the spring support portion 27.

  The connecting portion 50 includes a fixing portion 54 that is fixed to the fixed portion 24 of the toilet seat fixing frame 23A. The fixing portion 54 is disposed along the front surface of the fixed portion 24 and is fixed by a locking pin 25 as shown in FIG.

  As shown in FIGS. 3 and 8, the shaft portion 41A of the damper device 41 is inserted into the joint portion 51 of one of the pair of left and right connecting portions 50 (hereinafter referred to as the first connecting portion 50A). A hole 57 is provided. As shown in FIGS. 5 and 8, the joint portion 51 of the other connecting portion 50 (hereinafter referred to as the second connecting portion 50 </ b> B) of the pair of left and right connecting portions 50 is connected to the bearing portion 44 of the hinge fixing member 43. A fittable shaft portion 58 is provided.

  The toilet seat device M includes a lock mechanism 60 having a lock portion 61 and a lock receiving portion 62 which can be locked to each other and holding the toilet seat 30 in the upright position. The lock mechanism 60 has an arm portion 63 projecting outward from the toilet seat 30, and the lock portion 61 is provided to the arm portion 63. Further, the lock mechanism 60 has a lock main body 64 fixed to the connecting portion 50, and the lock receiving portion 62 is provided in the lock main body 64. The lock mechanism 60 is configured such that the lock portion 61 rotates together with the toilet seat 30 and engages with the lock receiving portion 62 at a position away from the hinge portion H.

  The arm part 63 is formed of a metal plate material, and has a form extending from the wall part 45 of the damper case 42 as shown in FIG. The arm portion 63 is disposed so as to protrude to the outside of the toilet seat 30 from an opening 37A formed on the rear surface of the housing recess 37 when the damper case 42 is housed in the housing recess 37.

  The arm portion 63 has a shape bent at a plurality of points as a whole. Specifically, as shown in FIG. 10, the arm 63 has a first arm 63A extending upward from the toilet seat 30 and a second arm extending rearward from the upper end of the first arm 63A in the laid posture of the toilet seat 30. An arm 63B and a third arm 63C rising obliquely rearward from the rear end of the second arm 63B are provided. In the standing posture of the toilet seat 30, as shown in FIG. 13, the first arm portion 63A extends rearward from the toilet seat 30, the second arm portion 63B extends downward from the rear end of the first arm portion 63A, and the third arm portion. 63C has a posture of being inclined obliquely backward from the lower end of the second arm portion 63B.

  The lock portion 61 is provided at the tip of the arm portion 63, as shown in FIG. The lock portion 61 protrudes in a direction substantially perpendicular to the third arm portion 63C, and is bent so as to protrude inward (center side in the left-right direction of the toilet seat 30) as shown in FIG. . The lock portion 61 has a mountain shape and can be engaged with a ball plunger 67 of the lock receiving portion 62.

  The lock main body 64 is formed of a metal plate and screwed to the first connecting portion 50A (see FIG. 3). The lock main body 64 is shaped to cover the outer side (the end side in the left-right direction of the toilet seat 30) of the first connecting portion 50A.

  The lock receiving portion 62 is provided at the lower end portion of the lock main body portion 64 (a portion projecting downward from the first connecting portion 50A). The lock receiving portion 62 includes an opposing piece 65 disposed to face the lower end portion of the lock main body portion 64. The opposite piece 65 is bent substantially at a right angle outward from the lower end of the lock main body portion 64, and then bent upward at a substantially right angle. The opposing piece 65 is substantially parallel to the lock main body 64, and the extending end (upper end) of the opposing piece 65 is inclined to guide the lock 61 between the opposing piece 65 and the lock main body 64. A lock guide 66 is provided.

  The lock receiving portion 62 is provided with a ball plunger 67. The ball plunger 67 has a ball 67A biased by a spring (not shown), and is fixed in a posture in which the ball 67A protrudes from the through hole formed in the lower end portion of the lock receiving portion 62 toward the opposing piece 65. There is.

  As shown in FIG. 12, the lower portion of the lock main body 64 is entirely covered by the lower portion of the tank cover 14. The lower part of the tank cover 14 is formed with a window (not shown) which allows the arm 63 to enter inside. The window has a shape that is long in the vertical direction so as to allow displacement of the arm 63 as the toilet seat 30 rotates. Further, the upper portion of the lock main body 64 is covered with the backrest member 12 of the tank cover 14.

Next, the operation of the lock mechanism 60 in the toilet seat device M of the present embodiment will be described.
In the lying posture of the toilet seat 30, as shown in FIG. 10, the lock portion 61 is positioned almost directly above the lock receiving portion 62. When a force is applied to the toilet seat 30 in the fallen posture in the rising direction, the toilet seat 30 is pivoted about the hinge portion H, and the lock portion 61 is displaced downward accordingly and reaches the lock receiving portion 62. The lock portion 61 is guided to the inside of the facing piece 65 by the lock guide portion 66. Eventually, the lock portion 61 contacts the ball 67A of the ball plunger 67 and displaces the ball 67A outward. At almost the same time as the toilet seat 30 reaches the standing posture, the lock portion 61 gets over the ball 67A, the ball 67A is elastically returned to the original position, and the lock portion 61 is locked to the lock receiving portion 62. Thereby, the standing posture of the toilet seat 30 is maintained.

Further, when a force is applied to the toilet seat 30 in the standing posture in the tilting direction, the lock portion 61 displaces the ball 67A outward and gets over, and the locking between the lock portion 61 and the lock receiving portion 62 is released. The toilet seat 30 gradually falls with the hinge portion H as the rotation center, and as the toilet seat 30 rotates, the lock portion 61 gradually separates upward from the lock receiving portion 62, and the toilet seat 30 slowly falls into the laid posture by the damper device 41.
The above is a series of operations of the lock mechanism 60.

According to the present embodiment configured as described above, the following effects can be obtained.
The toilet seat apparatus M according to the present embodiment is fixed to the apparatus main body 10 in such a manner that the apparatus main body 10 is fixed to the upper surface side of the toilet body main body 1 and can be rotated between a standing posture and a lying posture on the upper surface side of the toilet body 1. A lock mechanism 60 having a toilet seat 30, a hinge portion H that rotatably supports the toilet seat 30, and a lock portion 61 and a lock receiving portion 62 that can be locked to each other to hold the toilet seat 30 in an upright posture; The lock portion 61 rotates together with the toilet seat 30 and is engaged with the lock receiving portion 62 at a position away from the hinge portion H. According to this configuration, since the lock mechanism 60 that holds the toilet seat 30 in the standing posture is locked at a position away from the hinge portion H (that is, the rotation center), the toilet seat 30 is raised with a small locking force. It can be held in a posture.

  Further, the lock mechanism 60 has an arm portion 63 projecting outward from the toilet seat 30, and the lock portion 61 is provided in the arm portion 63. According to this configuration, since the lock mechanism 60 is locked at a position further away from the hinge portion H than when the lock mechanism 60 is locked inside the toilet seat 30, for example, the toilet seat has a smaller locking force. 30 can be held in the standing position.

  Further, the device body 10 is provided with a tank cover 14 that covers the lock receiving portion 62. According to this configuration, since the lock receiving portion 62 can be hidden, the appearance can be improved.

  In addition, inside the toilet seat 30, a damper device 41 that resists rotation of the toilet seat 30 is accommodated. Here, the damper device 41 not provided with the lock mechanism can be made smaller than that provided with the lock mechanism. Therefore, the tamper device 41 can be housed inside the toilet seat 30 to improve the appearance.

  Further, the center of gravity of the toilet seat 30 is located in front of the hinge H in the standing posture. According to this configuration, since a space can be provided on the rear side of the toilet seat 30 in the standing posture, the degree of freedom of the shape of the apparatus main body 10 can be increased.

<Other embodiments>
The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the said Example, although the lock part 61 is provided in the front-end | tip part of the arm part 63, not only this but a lock part may be provided in the intermediate part of an arm part, for example.
(2) In the above embodiment, the backrest member 12 is provided using the space behind the toilet seat 30 in the standing posture. However, the present invention is not limited to this, and the space behind the toilet seat in the standing posture is used. The shape of the apparatus main body may be arbitrarily changed. For example, the tank (and the tank cover) may be enlarged toward the front side, and the height dimension may be reduced accordingly.
(3) In the above embodiment, the apparatus main body 10 has the washing tank 11. However, the apparatus main body is not limited to this, and any apparatus may be used as long as it is fixed to the upper surface side of the toilet body. Or various toilet equipment such as a local cleaning device may not be provided.
(4) In the said Example, although the specific structure of the hinge part H was illustrated, as long as the structure of a hinge part can support a toilet seat so that rotation is possible, what kind of structure may be sufficient as it.
(5) In the above embodiment, the tank cover 14 covers the lock receiving portion 62, but the present invention is not limited to this, and the lock receiving portion may be covered with another member.
(6) In the above embodiment, the arm part 63 is provided integrally with the damper case 42. However, the present invention is not limited to this, and the arm part may be provided in any form as long as it is fixed to the toilet seat. good.
(7) In the above-described embodiment, the lock portion 61 is provided in the arm portion 63. However, the present invention is not limited to this, and the lock portion may be provided at a position away from the hinge portion in the toilet seat, for example.
(8) In the above embodiment, the lock receiving portion 62 is provided in the lock main body portion 64 fixed to the connecting portion 50. However, the present invention is not limited to this, and the lock receiving portion is arranged at a position away from the hinge portion. If it is done, it may be provided in any form.
(9) In the above embodiment, the center of gravity of the toilet seat 30 in the standing posture is located in the falling direction of the toilet seat 30, but the present invention is not necessarily limited to a toilet seat taking such a standing posture it can.

H: hinge part M: toilet seat device 1: toilet bowl main body 10: device main body 14: tank cover (casing)
30 ... toilet seat 41 ... damper device 60 ... lock mechanism 61 ... lock portion 62 ... lock receiving portion 63 ... arm portion

Claims (6)

A device body fixed to the upper surface side of the toilet body,
A toilet seat fixed to the apparatus main body in a form capable of rotating in a standing posture and a lying posture on the upper surface side of the toilet body,
A hinge portion rotatably supporting the toilet seat;
A lock mechanism having a lock portion and a lock receiving portion that can be locked with each other to hold the toilet seat in the upright position;
Equipped with
The device body has a tank for storing toilet bowl cleaning water, and a tank cover that covers the periphery of the tank.
The lock part rotates together with the toilet seat, and is locked with the lock receiving part at a position away from the hinge part ,
The hinge portion is located forward of the tank cover;
The toilet seat device in which the lock receiving portion is located inside the tank cover . A device body fixed to the upper surface side of the toilet body,
A toilet seat fixed to the apparatus main body in a form capable of rotating in a standing posture and a lying posture on the upper surface side of the toilet body,
A hinge portion rotatably supporting the toilet seat;
A lock mechanism having a lock portion and a lock receiving portion that can be locked with each other to hold the toilet seat in the upright position;
With
The device body has a tank for storing toilet bowl cleaning water, and a tank cover that covers the periphery of the tank.
The lock part rotates together with the toilet seat, and is locked with the lock receiving part at a position away from the hinge part,
The toilet seat device in which the tank cover covers the lock receiver . The hinge portion is located forward of the tank cover;
The toilet seat device according to claim 2, wherein the lock receiving portion is located inside the tank cover . The lock mechanism has an arm portion projecting outward from the toilet seat,
The toilet seat device according to any one of claims 1 to 3, wherein the lock portion is provided in the arm portion .   The toilet seat device according to any one of claims 1 to 4, wherein a damper device that resists rotation of the toilet seat is accommodated inside the toilet seat.   The toilet seat device according to any one of claims 1 to 5, wherein the center of gravity of the toilet seat is located forward of the hinge portion in the standing posture.

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