JP6191858B2 - Toilet seat lifting device - Google Patents

Description

  The present invention relates to a toilet seat lifting / lowering device that lifts and lowers a toilet seat in order to reduce a burden on a user of a sitting toilet.

  The operation of sitting on the toilet seat and the operation of standing up from the toilet seat when using a sitting toilet is a heavy burden on the body of a disabled person or an elderly person. Therefore, for the purpose of assisting such an operation and reducing the burden on the user, a toilet seat elevating device that elevates and lowers the toilet seat with an electric driving force has been developed, and its spread has already begun.

  Patent Document 1 below describes a toilet seat lifting device that includes a toilet seat cradle that supports the toilet seat from below, and that lifts the toilet seat cradle together with the toilet seat using an actuator. In this toilet seat lifting / lowering device, the toilet seat cradle is supported by a plurality of link members so that it can be lifted / lowered with respect to the toilet.

  Moreover, the toilet seat lifting / lowering apparatus described in the following Patent Document 1 changes the tilt angle of the toilet seat when the toilet seat is raised to the uppermost position by changing the position of the fulcrum (rotation center) of the link member. Is possible. It is possible to select whether the toilet seat is in a horizontal state when it is raised or inclined to the front side according to the user's preference, physical condition, etc. .

Japanese Patent No. 4517806

  In the toilet seat lifting / lowering apparatus described in Patent Document 1, when changing the position of the fulcrum of the link member, the plate-like part including the fulcrum is once removed from the toilet seat lifting / lowering apparatus, and the toilet seat is again in a state where the position is changed. Must be attached to the lifting device. For this reason, in a narrow toilet space, it may be difficult to perform an operation of removing a plate-like component or an operation of reattaching while visually checking the position. In that case, the toilet seat lifting / lowering device is once removed from the sitting toilet and the position of the fulcrum of the link member is changed outside the toilet space.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a toilet seat lifting / lowering device that can change the position of the fulcrum of the link member by a simple operation without removing the toilet seat lifting / lowering device from the toilet. It is to provide.

  In order to solve the above-described problems, a toilet seat lifting / lowering device according to the present invention is formed to extend downward from the support member on a support member that supports the toilet seat from below on the toilet and on the left and right sides of the toilet. A toilet seat cradle having a pair of elevating members, a toilet seat fixing base having a pair of side members respectively disposed on the left and right side portions of the toilet bowl, and fixed to the toilet bowl, and the toilet seat cradle A support mechanism that connects the lifting member and the side member, and a drive mechanism that applies a driving force to the toilet seat cradle to raise and lower the toilet seat together with the toilet seat cradle, The support mechanism has one end rotatably attached to the side member and the other end rotatably attached to the elevating member, and is attached to the left and right sides of the toilet. That A pair of arranged upper arm members and one end are rotatably attached to the side member, and the other end is rotatably attached to the elevating member, below the upper arm member A pair of lower arm members respectively disposed on the left and right sides of the toilet bowl, wherein each upper arm member has a toilet seat when the toilet seat is raised together with the toilet seat cradle. An operation member for changing an inclination angle is attached, and the operation member changes the position of the rotation center of the upper arm member in the elevating member without being removed from the upper arm member. It is characterized by that.

  The toilet seat lifting / lowering apparatus according to the present invention includes a toilet seat cradle, a toilet bowl fixing base, a drive mechanism, and a support mechanism. The toilet seat cradle is a member that moves up and down together with the toilet seat, a support member that supports the toilet seat from below on the toilet bowl, and a pair of lifting members that are formed to extend downward from the support member on the left and right sides of the toilet bowl, respectively have. The toilet fixing base is a member fixed to the toilet bowl, and has a pair of side members respectively disposed on the left and right side portions of the toilet bowl.

  The drive mechanism applies a driving force to the toilet seat cradle to raise and lower the toilet seat together with the toilet seat cradle.

  The support mechanism is a link mechanism having a plurality of arm members that function as links, and connects the lifting member of the toilet seat cradle and the side member of the toilet fixing base in a state where the toilet seat cradle can be lifted and lowered. It is. The support mechanism includes a pair of upper arm members disposed on the left and right sides of the toilet bowl and a pair of lower arm members respectively disposed on the left and right sides of the toilet bowl.

  One end of each upper arm member is rotatably attached to the side member of the toilet bowl fixing base, and the other end is rotatably attached to the lifting member of the toilet seat receiving base. Each lower arm member has one end rotatably attached to the side member of the toilet fixing base and the other end rotatably attached to the lifting member of the toilet seat cradle. The lower arm member is attached to the lower side than the upper arm member.

  Thus, each side member and the elevating member are connected to each other via the two arm members (links). It can be said that the support mechanism is a four-bar linkage mechanism arranged on each of the left and right sides of the toilet.

  The present invention further includes an operation member for changing the tilt angle of the toilet seat when the toilet seat is raised together with the toilet seat cradle. The operation member is attached to each upper arm member, and is disposed on the left and right sides of the toilet. A user of the toilet seat lifting / lowering device or an operator who installs the toilet seat lifting / lowering device can change the position of the rotation center of the upper arm member in the lifting / lowering member by operating these operation members. By changing the position of the rotation center of the upper arm member in the elevating member, the inclination angle of the toilet seat when the toilet seat is raised together with the toilet seat cradle is changed.

  The operation member changes the position of the rotation center of the upper arm member in the elevating member without being removed from the upper arm member. For this reason, the inclination angle of the toilet seat can be easily changed even in a narrow toilet space.

  Moreover, in the toilet seat lifting / lowering apparatus according to the present invention, the operation member may be configured to change a position of a rotation center of the upper arm member in the lifting member by rotating with respect to the upper arm member. preferable.

  In this preferable aspect, the operating member rotates relative to the upper arm member to change the position of the rotation center of the upper arm member in the elevating member. For this reason, the operation for changing the position of the rotation center can be performed more easily.

  Moreover, in the toilet seat lifting / lowering device according to the present invention, a convex portion protruding toward the operation member is formed on either the upper arm member or the lifting member, and the upper portion of the lifting member When the position of the rotation center of the arm member is changed, it is also preferable that the operation member is configured to move over the convex portion.

  In this preferable aspect, a convex portion that protrudes toward the operation member is formed on either the upper arm member or the elevating member. When the position of the rotation center of the upper arm member in the elevating member is changed, the operation member moves over the convex portion.

  With such a configuration, it is possible to make a person who operates the operation member feel a click when the operation member gets over the convex portion. Based on the click feeling, it is possible to recognize whether or not the operation for changing the position of the rotation center has been completed.

  In the toilet seat lifting / lowering device according to the present invention, it is preferable that the toilet seat lifting / lowering device further includes a position restricting mechanism that stops the operation member at a predetermined position.

  In this preferable aspect, it has the position control mechanism which stops an operation member in a predetermined position. Such a position regulating mechanism prevents the position of the operation member after being operated from being other than a predetermined position. For this reason, the tilt angle of the toilet seat when the toilet seat is raised together with the toilet seat cradle is prevented from becoming an unexpected angle.

  In the toilet seat lifting / lowering apparatus according to the present invention, it is also preferable that the operation member is fixed to the upper arm member or the lifting member with a screw at a predetermined position.

  In this preferable aspect, the operation member is fixed to the upper arm member or the lifting member with a screw at a predetermined position. For this reason, it is prevented that the position of the operation member shifts from a predetermined position.

  ADVANTAGE OF THE INVENTION According to this invention, the toilet seat raising / lowering apparatus which can change the position of the fulcrum of a link member by simple operation can be provided, without removing a toilet seat raising / lowering apparatus from a toilet bowl.

It is the perspective view which showed the toilet seat raising / lowering apparatus which concerns on one Embodiment of this invention, and the flush toilet apparatus which mounts this. It is the side view which looked at the flush toilet apparatus of the state which the toilet seat lowered | hung by the toilet seat raising / lowering apparatus shown in FIG. 1 from the right side. It is the side view which looked at the flush toilet apparatus of the state shown in FIG. 1 from the right side. It is the side view which looked at the flush toilet apparatus of the state shown in FIG. 2 from the left side. It is the front view which looked at the flush toilet apparatus of the state shown in FIG. 2 from the front side. It is an exploded view for demonstrating the structure of a motor unit among the toilet seat raising / lowering apparatuses shown in FIG. In the flush toilet apparatus shown in FIG. 2, it is a side view which shows the state by which the position of the rotation center of the upper arm member in a raising / lowering member was changed. FIG. 8 is a side view showing a state where the toilet seat is raised in the flush toilet apparatus shown in FIG. 7.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  FIG. 1 is a perspective view showing a toilet seat lifting apparatus 10 according to an embodiment of the present invention and a flush toilet apparatus Cd equipped with the same. The flush toilet apparatus Cd is a style stool, and includes a toilet body (bowl portion) Bw and a toilet seat St installed on the upper surface side of the toilet body Bw.

  In the following description, unless otherwise specified, the right side when viewed from the user seated on the toilet seat St is referred to as the “right side”, and the left side when viewed from the user seated on the toilet seat St. Will be referred to as the “left side”. Further, the front side viewed from the user seated on the toilet seat St is referred to as “front side” or “front side”, and the rear side viewed from the user seated on the toilet seat St is referred to as “rear side”. "Or" rear side ".

  The flush toilet apparatus Cd can lift and lower the toilet seat St by mounting the toilet seat lifting apparatus 10. FIG. 1 shows a state in which the toilet seat St is raised by the toilet seat lifting device 10. As shown in FIG. 1, when the toilet seat St is raised to the uppermost position in the movable range, the toilet seat St is inclined so as to be lowered toward the front side.

  The user first raises the toilet seat St in this manner and then sits on the toilet seat St. Thereafter, the toilet seat St is lowered to the lowest position within the movable range by operating an operation unit (not shown). In addition, after the use of the flush toilet apparatus Cd is finished (after the toilet), the user operates the operation unit (not shown) to raise the toilet seat St again, and then stands up after the state shown in FIG. . In this way, the user of the flush toilet apparatus Cd can sit on the toilet seat St or stand up from the toilet seat St without supporting the overall weight with his / her own power. The burden on the user is reduced by the toilet seat lifting / lowering device 10.

  The toilet seat lifting / lowering device 10 includes a toilet seat cradle 100, a toilet bowl fixing base 200, a support mechanism 400, and a motor unit 300 (only part of which is shown in FIG. 1).

  The toilet seat cradle 100 is a member that moves up and down together with the toilet seat St, and is formed to extend downward from the right end of the support member 110 and a plate-like support member 110 that supports the toilet seat St from below on the toilet body Bw. The plate-shaped right elevating member 120 and the plate-shaped left elevating member 130 formed so as to extend downward from the left end of the support member 110 are included. The upper surface of the support member 110 is in contact with the lower surface of the toilet seat St, and both are fixed to each other by bolts. The right elevating member 120 and the left elevating member 130 are parallel to each other, and both are perpendicular to the support member 110. Further, the right elevating member 120 is disposed to face the right side surface of the toilet body Bw, and the left elevating member 130 is disposed to face the left side surface of the toilet body Bw. As will be described later, the force for raising the toilet seat St and the toilet seat cradle 100 is applied to both the right lifting member 120 and the left lifting member 130.

  The toilet bowl fixing base 200 is a member that is fixed to the toilet bowl body Bw. The toilet fixing base 200 includes a top plate 210 disposed so as to cover the upper surface of the toilet body Bw, a right side plate 220 formed to extend downward from a right end portion of the top plate 210, and a left side of the top plate 210. And a left side plate 230 formed so as to extend downward from the end portion. The lower surface of the top plate 210 is in contact with the upper surface of the toilet body Bw, and both are fixed to each other by bolts. The right side plate 220 and the left side plate 230 are parallel to each other, and both are perpendicular to the top plate 210. The right side plate 220 is disposed so that a part thereof faces the right elevating member 120, and the left side plate 230 is disposed so that a part thereof opposes the left elevating member 130.

  The support mechanism 400 is a link mechanism that connects the toilet seat cradle 100 and the toilet bowl fixing base 200 so as to support the toilet seat cradle 100 in a state where it can be lifted and lowered. The support mechanism 400 includes a right support mechanism 401 that connects the right elevating member 120 and the right side plate 220, and a left support mechanism 402 that connects the left elevating member 130 and the left side plate 230.

  FIG. 2 is a side view of the flush toilet device Cd in a state where the toilet seat St is lowered by the toilet seat lifting / lowering device 10 as viewed from the right side. Note that the right support mechanism 401 in this state is on the inner side (toilet body Bw side) than the right elevating member 120, and is actually hidden by the right elevating member 120 and cannot be seen from the outside. However, in FIG. 2, for convenience of explanation, the right support mechanism 401 is drawn so as to see through the inside of the right elevating member 120. In other drawings referred to in the following description, the right support mechanism 401 and the left support mechanism 402 are drawn in the same manner.

  As shown in FIG. 2, the right support mechanism 401 includes a lower arm member 410 that is a link disposed on the lower side and an upper arm member 420 that is a link disposed on the upper side.

  The lower arm member 410 is a plate-like link, and is attached to the outer surface of the right side plate 220 via a node 412 that is one of the joints of the link mechanism. The lower arm member 410 can rotate along the outer surface of the right side plate 220 around the node 412.

  In addition, the end of the lower arm member 410 on the front side of the node 412 is connected to the connection plate 121 fixed to the inner surface of the right elevating member 120 via a node 413 that is one of the joints of the link mechanism. Attached. The lower arm member 410 can rotate relative to the right elevating member 120 around the node 413.

  The upper arm member 420 is a plate-like link, and is attached to the outer surface of the right side plate 220 via a node 422 that is one of the joints of the link mechanism. The upper arm member 420 can be rotated along the outer surface of the right side plate 220 around the node 422.

  Further, the end of the upper arm member 420 on the front side of the node 422 is connected to the operation plate 122 fixed to the inner surface of the right elevating member 120 via a node 423 which is one of the joints of the link mechanism. Attached. The upper arm member 420 can rotate relative to the right elevating member 120 around the node 423.

  As described above, the right support mechanism 401 is configured as a four-bar linkage mechanism that connects the right elevating member 120 and the right side plate 220 with the four nodes (node 412, node 413, node 422, and node 423).

  A protrusion 411 that protrudes toward the outside (right side) is formed at the end of the lower arm member 410 on the rear side of the node 412. When a force that pulls the protrusion 411 rearward and downward is applied, the lower arm member 410 rotates about the node 412 and the node 413 rises as shown in FIG. At the same time, the upper arm member 420 rotates about the node 422 and the node 423 rises. Thus, the force that pulls the protrusion 411 backward and downward is converted into a force that raises the right elevating member 120 together with the nodes 413 and 423. As will be described later, the motor unit 300 raises the right elevating member 120 and the toilet seat St by pulling the wire W1 having one end connected to the protrusion 411 backward and downward.

  By the way, the distance from the node 413 to the node 423 is shorter than the distance from the node 412 to the node 422. For this reason, when the lower arm member 410 and the upper arm member 420 are rotated as described above and the right elevating member 120 and the toilet seat St are raised, as shown in FIGS. 1 and 3, the toilet seat St is moved forward. It will be in the state inclined so that it may go down toward the side.

  FIG. 4 is a side view of the flush toilet device Cd with the toilet seat St lowered by the toilet seat lifting / lowering device 10 as viewed from the left side. Note that the left support mechanism 402 in this state is on the inner side (toilet body Bw side) than the left elevating member 130, and is actually hidden by the left elevating member 130 and cannot be seen from the outside. However, in FIG. 4, for convenience of explanation, the left support mechanism 402 is drawn so as to see through the inside of the left elevating member 130.

  As shown in FIG. 4, the left support mechanism 402 includes a lower arm member 430 that is a link disposed on the lower side and an upper arm member 440 that is a link disposed on the upper side.

  The lower arm member 430 is a plate-like link, and is attached to the outer surface of the left side plate 230 via a node 432 that is one of the joints of the link mechanism. The lower arm member 430 can rotate along the outer surface of the lower arm member 430 around the node 432.

  Further, the end of the lower arm member 430 on the front side of the node 432 is connected to the connection plate 131 fixed to the inner surface of the left elevating member 130 via a node 433 that is one of the joints of the link mechanism. Attached. The lower arm member 430 can rotate relative to the left elevating member 130 around the node 433.

  The upper arm member 440 is a plate-like link, and is attached to the outer surface of the left side plate 230 via a node 442 which is one of the joints of the link mechanism. The upper arm member 440 can be rotated along the outer surface of the left side plate 230 around the node 442.

  Further, the end of the upper arm member 440 on the front side of the node 442 is connected to the operation plate 132 fixed to the inner surface of the left elevating member 130 via a node 443 that is one of the joints of the link mechanism. Attached. The upper arm member 440 can rotate relative to the left elevating member 130 around the node 443.

  As described above, the left support mechanism 402 is configured as a four-bar linkage mechanism that connects the left elevating member 130 and the left side plate 230 with the four nodes (node 432, node 433, node 442, and node 443).

  A protrusion 431 that protrudes outward (right side) is formed at the end of the lower arm member 430 on the rear side of the node 432. When a force is applied to pull the protrusion 431 backward and downward, the lower arm member 430 rotates about the node 432 and the node 433 rises. At the same time, the upper arm member 440 rotates about the node 442 and the node 443 moves up. In this way, the force that pulls the protrusion 431 backward and downward is converted into a force that raises the left elevating member 130 together with the nodes 433 and 443. As will be described later, the motor unit 300 raises the left elevating member 130 and the toilet seat St by pulling the wire W2 having one end connected to the protrusion 431 backward and downward.

  By the way, the distance from the node 433 to the node 443 is shorter than the distance from the node 432 to the node 442. Therefore, when the lower arm member 430 and the upper arm member 440 rotate as described above and the left elevating member 130 and the toilet seat St rise, as shown in FIG. 1, the toilet seat St faces the front side. It will be in a state inclined so that it may go down.

  Further, the right support mechanism 401 and the left support mechanism 402 are symmetrical with respect to each other in position and shape. Therefore, if the amount by which the protrusion 411 is pulled by the wire W1 (displacement amount of the protrusion 411) and the amount by which the protrusion 431 is pulled by the wire W2 (displacement amount of the protrusion 431) are the same, the right elevating member 120 is lifted The amount and the rising amount of the left lifting member 130 are the same. In other words, the raising amount (height) of the toilet seat St during ascending is the same on the left and right.

  The motor unit 300 applies a driving force to the toilet seat cradle 100 by pulling the wires W1 and W2 in order to raise and lower the toilet seat St together with the toilet seat cradle 100. FIG. 5 is a front view of the flush toilet apparatus Cd with the toilet seat St lowered, as viewed from the front side. As shown in FIG. 5, the motor unit 300 is disposed only on the right side surface of the flush toilet apparatus Cd, and is not disposed on the left side surface. The motor unit 300 is fixed to the outer surface of the right side plate 220.

  FIG. 6 is an exploded view for explaining the configuration of the motor unit 300. As shown in FIG. 6, the motor unit 300 includes a rotary motor 301, a gear unit 302, a first drum 310, and a second drum 320.

  The rotation motor 301 is an electric rotation motor and is a source of driving force applied to the toilet seat cradle 100. The operation (start and stop of rotation) of the rotary motor 301 is controlled by a control device (not shown). The gear unit 302 is a reduction gear arranged to adjust and output the rotation speed and torque of the rotary motor 301. The gear unit 302 has a shaft 303 and is configured such that when the rotary motor 301 rotates, the shaft 303 rotates at a predetermined rotational speed.

  A second drum 320 is fixed to the tip of the shaft 303 via a connecting flange 306. For this reason, when the rotary motor 301 rotates, the second drum 320 rotates at the same rotation speed together with the shaft 303. Further, when the second drum 320 is rotated, the first drum 310 is also rotated in the same direction following the rotation.

  The first drum 310 is formed with a groove along its outer periphery, and one end of the wire W1 is fixed inside the groove. Further, the other end of the wire W1 is connected to the protrusion 411 of the lower arm member 410 as already described. As shown in FIG. 2, the wire W1 is partially supported by the pulley PL1. The pulley PL1 is rotatably attached to the outer side surface of the right side plate 220.

  When the flush toilet apparatus Cd is viewed from the right side as shown in FIG. 2, when the first drum 310 rotates leftward, the wire W <b> 1 is wound around the first drum 310. As a result, a force that pulls rearward and downward is applied to the protrusion 411, and the right elevating member 120 is raised. A limit switch LS1 is attached to the right side plate 220, and a control device (not shown) stops the rotary motor 301 when the lower arm member 410 touches the detection unit of the limit switch LS1.

  On the other hand, when the first drum 310 rotates in the right direction, the wound wire W1 is sent out from the first drum 310. The lower arm member 410 rotates so that the protrusion 411 moves forward and upward, and the right elevating member 120 descends. A limit switch LS2 is attached to the right side plate 220, and a control device (not shown) stops the rotary motor 301 when the lower arm member 410 touches the detection unit of the limit switch LS2.

  As in the case of the first drum 310, the second drum 320 has a groove formed along its outer periphery, and one end of the wire W2 is fixed inside the groove. Further, the other end of the wire W2 is connected to the protrusion 431 of the lower arm member 430 as already described.

  As shown in FIG. 2, the wire W2 extends upward from the second drum 320 and passes through the upper surface of the toilet body Bw to the left side surface of the toilet body Bw. As shown in FIG. 4, on the left side surface of the toilet body Bw, a part of the wire W2 is supported by the pulley PL2 and the pulley PL3. The pulleys PL2 and PL3 are rotatably attached to the outer surface of the left side plate 230. In addition to these, the wire W2 is also supported by a plurality of pulleys (not shown) arranged on the upper surface of the toilet body Bw. Thus, since the wire W2 is drawn from the right side surface of the toilet body Bw to the left side surface, the length of the wire W2 is longer than the length of the wire W1.

  When the flush toilet apparatus Cd is viewed from the right side as shown in FIG. 2, when the second drum 320 rotates leftward, the wire W2 is wound around the second drum 320. As a result, a force that pulls rearward and downward is applied to the protrusion 431, and the left elevating member 130 is raised. On the other hand, when the second drum 320 rotates in the right direction, the wound wire W <b> 2 is sent out from the second drum 320. As a result, the left elevating member 130 is lowered.

  With reference to FIG. 2 again, the configuration of the operation plate 122 will be described in detail. As already described, the operation plate 122 is fixed to the inner side surface of the right elevating member 120. Further, an end of the upper arm member 420 on the front side of the node 422 is attached to the operation plate 122 via a node 423. In this way, the operation plate 122 is disposed between the upper arm member 420 and the right elevating member 120, and connects both in a rotatable state.

  The operation plate 122 is attached to the inner side surface of the right elevating member 120 via a node 125. The operation plate 122 can rotate along the inner surface of the right elevating member 120 around the node 125. However, in the normal time when the flush toilet apparatus Cd is used, the operation plate 122 is fixed to the right elevating member 120 by the bolt 126, and the rotation of the operation plate 122 is restricted. That is, the operation plate 122 is completely fixed to the right elevating member 120.

  When the bolt 126 is removed, the operation plate 122 can be rotated around the node 125. FIG. 7 shows a state in which the position of the node 423 is slightly raised by rotating the operation plate 122 leftward about the node 125 from the state shown in FIG. In this state, the distance from the node 413 to the node 423 is equal to the distance from the node 412 to the node 422. The operation plate 122 is disposed at such a position, and is then fixed to the right elevating member 120 again by the bolt 126.

  The operation plate 132 fixed to the inner side surface of the left elevating member 130 has the same configuration (symmetric configuration) as the operation plate 122. In FIG. 7, the position of the node 443 is slightly raised by rotating the operation plate 132 from the state shown in FIG. 4. In this state, the distance from the node 433 to the node 443 is equal to the distance from the node 432 to the node 442. Note that the operation plate 132 is disposed at such a position, and is then fixed to the right elevating member 120 again by the bolt 136.

  FIG. 8 shows a state where the motor unit 300 is operated so as to pull the wire W1 and the wire W2 from the state shown in FIG. 7 and the toilet seat St is raised together with the toilet seat cradle 100. As shown in FIG. 8, the toilet seat St is not tilted so as to be lowered toward the front side, but is raised while maintaining a horizontal state. The reason why the tilt angle of the toilet seat St is changed from the state shown in FIG. 3 is that the operation plate 122 rotates and the position of the rotation center of the upper arm member 420 in the right elevating member 120 (the position of the node 423 relative to the right elevating member 120). This is due to the change in the relative position. Further, the operation plate 132 is rotated and the position of the rotation center of the upper arm member 440 in the left elevating member 130 (the relative position of the node 443 with respect to the left elevating member 130) is changed.

  Thus, in the toilet seat lifting / lowering apparatus 10 according to the present embodiment, the operation plate 122 is not removed from the upper arm member 420, and the position of the rotation center (node 423) of the upper arm member 420 in the right lifting member 120 is set. It is to be changed. In addition, the operation plate 132 changes the position of the rotation center (node 443) of the upper arm member 440 in the left elevating member 130 without being removed from the upper arm member 440. For this reason, it is possible to easily change the inclination angle of the toilet seat St even in a narrow toilet space.

  In the present embodiment, a part of the surface of the upper arm member 420 that faces the operation plate 122 protrudes smoothly toward the operation plate 122. When the operation plate 122 rotates as described above, the operation plate 122 moves over the protruding portion (convex portion) of the upper arm member 420.

  For this reason, when the user of the toilet seat lifting / lowering device 10 grasps the operation plate 122 and starts to rotate it, the operation plate 122 is biased toward the original position. On the other hand, when the operation plate 122 gets over the protruding portion of the upper arm member 420, the operation plate 122 is biased in the reverse direction (the direction in which the user tries to rotate the operation plate 122). As described above, the change in the force applied to the operation plate 122 is felt as a click feeling by the user or the like who is holding the operation plate 122. The click feeling allows the user or the like to recognize whether or not the operation for changing the position of the node 423 is completed.

  Further, the operation plate 122 can move (rotate) only in the range from the position (angle) in the state shown in FIG. 2 to the position (angle) in the state shown in FIG. Movement beyond the range is restricted by a stopper (not shown). The stopper prevents the position of the operation plate 122 after being operated from being other than a predetermined position. For this reason, the tilt angle of the toilet seat St when the toilet seat St rises together with the toilet seat cradle 100 is prevented from becoming an unexpected angle. That is, an angle other than the angle shown in FIGS. 3 and 8 is prevented.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

10: Toilet seat elevating device 100: Toilet seat cradle 110: Support member 120: Right elevating member 121: Connection plate 122: Operation plate 125: Node 126: Bolt 130: Left elevating member 131: Connection plate 132: Operation plate 136: Bolt 200 : Toilet fixture 210: Top plate 220: Right side plate 230: Left side plate 300: Motor unit 301: Rotating motor 302: Gear unit 303: Shaft 306: Connection flange 310: First drum 320: Second drum 400: Support mechanism 401 : Right support mechanism 402: Left support mechanism 410: Lower arm member 411: Projection 412 and 413: Node 420: Upper arm member 422 and 423: Node 430: Lower arm member 431: Projection 432 and 433: Node 440: Upper arm member 442, 443: Section Bw: Toilet bowl body Cd: Washing Toilet bowl device LS1, LS2: Limit switch PL1, PL2, PL3: Pulley St: Toilet seat W1, W2: Wire

Claims (4)

A toilet seat cradle having a support member that supports the toilet seat from below on the toilet, and a pair of elevating members formed so as to extend downward from the support member at the left and right sides of the toilet,
A toilet fixing base having a pair of side members respectively disposed on the left and right side portions of the toilet, and fixed to the toilet;
A support mechanism for connecting the elevating member and the side member in a state in which the toilet seat cradle is movable up and down;
A drive mechanism for applying a driving force to the toilet seat cradle for raising and lowering the toilet seat together with the toilet seat cradle,
The support mechanism is
A pair of upper arm members, one end of which is rotatably attached to the side member and the other end of which is rotatably attached to the elevating member; ,
One end is pivotally attached to the side member, and the other end is pivotally attached to the lifting member, and is respectively disposed on the left and right sides of the toilet below the upper arm member. A pair of lower arm members,
Each upper arm member is provided with an operation member for changing the inclination angle of the toilet seat when the toilet seat is lifted together with the toilet seat cradle,
The operation member changes a position of a rotation center of the upper arm member in the elevating member by rotating with respect to the elevating member without being removed from the upper arm member. Toilet seat lifting device. A convex portion protruding toward the operation member is formed on either the upper arm member or the elevating member,
When the position of the center of rotation of the upper arm member in the lifting member is changed,
The toilet seat lifting / lowering device according to claim 1 , wherein the operation member is configured to move over the convex portion. It has a position regulating mechanism for stopping the operation member at a predetermined position,
The toilet seat lifting / lowering device according to claim 1 or 2 . The toilet seat lifting / lowering device according to any one of claims 1 to 3 , wherein the operation member is fixed to the upper arm member or the lifting / lowering member by a screw at a predetermined position.