JP2007268211A - Toilet seat lifting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet seat lifting device using a damper without using oil. <P>SOLUTION: An air damper mechanism 7 is formed of a cylindrical cylinder 71 extended toward a fixed face 21 of a fixed plate 2 from the lower face of a ceiling member 53 of a slider 5 and a piston 72 disposed in the cylinder 71 and supported on the fixed plate 2 side to form a closed space 73 together with the cylinder 71. Furthermore, an air escape part 711 to escape air in the closed space 73 to the outside is formed across an outer wall side 750 of an O-ring 75 of the slide part of the piston 72 sliding on the slide face 710 of the cylinder 71 in a rear half part where air pressure in the closed space 73 is increased, in the total range in the slide direction of the piston 72 on a slide face 710 sliding on the piston 72 in the cylinder 71. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a toilet seat lifting / lowering device for lifting a toilet seat when cleaning a Western-style toilet.

In a Western-style toilet, the toilet seat and toilet lid rotate around the back, resulting in a prone posture and a standing posture. For this reason, even if it is going to clean the back of the upper surface of a toilet bowl main body, since only a very narrow gap is vacant between a toilet bowl main body and a toilet seat, it cannot reach. Therefore, from the toilet side, the guide member on which the rack is formed is raised, and a pinion is provided on the slider that supports the toilet seat so that the slider can be moved up and down along the guide member. A toilet seat lifting device has been devised. In addition, the toilet seat lifting device disclosed herein is configured such that when the slider is lowered by providing a rotary damper device for the pinion, the slider is not rapidly lowered (see, for example, Patent Document 1).
JP-A-9-28619

  Recently, the toilet seat is integrated as a toilet seat unit with a damper device that reduces the speed when the toilet seat and toilet lid are tilted by its own weight, and is further integrated as a toilet seat unit with an electric mechanism that electrically opens and closes the toilet lid. Since the lifting device is in circulation and these mechanisms are also lowered together with the slider, it is necessary to prevent the slider from descending rapidly against all these loads. However, since the damper device is used under such severe conditions, there is an increased risk of breakage. In particular, the rotary damper device as described in Patent Document 1 contains a viscous liquid such as oil, and there is a problem that the oil leaks out due to breakage and contaminates the toilet seat.

  In view of the above problems, an object of the present invention is to provide a toilet seat lifting device using a damper device that does not use oil.

  In order to solve the above problems, in the present invention, a seat plate serving as a fixing portion to a Western-style toilet bowl body, a guide member rising from the seat plate, and configured to be movable up and down along the guide member, In the toilet seat lifting apparatus having an attached slider, an air damper mechanism that exerts a drag force on the slider when the toilet seat is lowered is provided between the seat plate and the slider, and the air damper mechanism includes: A cylinder provided on one side of the seat plate and the slider, and a piston provided on the other side of the seat plate and the slider to form a sealed space in the cylinder, Along with relative movement by sliding with the piston, a communication hole through which air in the sealed space flows is formed in the slider or the piston, and the piston of the cylinder is formed. The sliding surface on which the ton slides spans the sliding portion of the piston sliding on the sliding surface in the latter half of the entire range of the sliding direction where the air pressure in the sealed space increases. An air escaping portion for escaping air in the sealed space is formed.

  In the present invention, the communication hole is a mortar extending in the direction of gravity and having an opening area widened in a direction in which an end portion on the opposite side of the sealed space formed below the gravity direction is separated from the sealed space. It is preferable to have the mortar part formed in the shape. If comprised in this way, since the air discharge | released from the communicating hole diffuses smoothly, it becomes difficult to generate a vortex in the vicinity of the communicating hole, and it can suppress generation | occurrence | production of noise. In addition, the mortar portion may cause the communication hole to be easily closed by dust or the like, but air from the sealed space can be released through the air escape portion, so the communication hole is closed by dust or the like. However, an increase in the air pressure in the sealed space can be suppressed and the toilet seat can be lowered reliably.

  In this invention, it is preferable that the said air escape part is formed only in a part of circumferential direction. If comprised in this way, all the parts except the one part of the circumferential direction in which the air escape part was formed can be made into the sliding surface of a piston. Therefore, the piston operation is not hindered by the air escape portion.

  In the present invention, the air escape portion is formed immediately before the position where the volume of the sealed space is minimized, and the sliding portion of the piston is located at the position where the volume of the sealed space is minimized. It is preferable not to face each other. The position where the volume of the sealed space is minimized corresponds to one end of the entire range in which the piston moves, and the pinstone is often held at this position. Normally, a piston is engaged with a rubber O-ring at its sliding portion. For this reason, with this configuration, the O-ring faces the air escape portion immediately before the position where the volume of the sealed space is minimized, and the O-ring faces the air escape portion at the piston holding position. You don't have to. Therefore, the time for the O-ring to face the air escape portion becomes extremely short, and there is no problem that the O-ring changes over time and enters the deep portion of the air escape portion. Accordingly, it is possible to prevent a malfunction of the piston due to the O-ring entering the deep part of the air escape part.

  In the present invention, it is preferable that the opening end surface on the side where the opening area of the mortar portion is widened is formed on the bottom surface of a recess formed on the end surface on the discharge side from which air from the sealed space is discharged. If comprised in this way, since dust can be collected in the bottom face of a recessed part and the circumference | surroundings of a mortar part, the quantity of the dust which penetrate | invades into sealed space can be reduced.

  In the toilet seat lifting / lowering device according to the present invention, the damper device includes a cylinder provided on one side of the seat plate and the slider, and a piston provided on the other side of the seat plate and the slider that forms a sealed space in the cylinder. Since the air damper mechanism is configured, a damper action can be obtained without using oil. Moreover, a communication hole through which air in the sealed space flows is formed in the slider or piston with relative movement between the cylinder and the piston, and the sliding surface on which the piston of the cylinder slides has a sliding direction. An air escaping portion for escaping air in the sealed space is formed in the latter half of the entire range in which the air pressure in the sealed space increases, straddling the sliding portion of the piston sliding on the sliding surface. Therefore, even when the communication hole is closed by dust or the like, air from the sealed space can be released through the air escape portion. Therefore, the toilet seat can be reliably lowered by suppressing an increase in air pressure in the sealed space.

  An example of a toilet seat lifting / lowering apparatus to which the present invention is applied will be described with reference to the drawings.

(overall structure)
1 (a) and 1 (b) are explanatory diagrams showing a state in which the toilet seat is lowered and an explanatory diagram showing a state in which the toilet seat is lifted from the toilet body in the western toilet unit using the toilet seat lifting / lowering apparatus to which the present invention is applied. It is. 2A to 2D are a plan view, a front view, a right side view, and a front view of the toilet seat lifting apparatus to which the present invention is applied, with the movable plate removed. FIG. 3 (a)
(B) is a schematic sectional drawing in the AA line of Fig.2 (a), and a schematic sectional drawing in the BB line of Fig.2 (a).

As shown in FIG. 1 (a), a Western-style toilet unit of this embodiment includes a Western-style toilet body 11, a toilet seat 12 that is opened and closed on the toilet body 11, and a toilet lid 13 that is opened and closed on the toilet seat 12. The toilet seat 12 and the toilet lid 13 are rotated around the back to assume a prone posture and a standing posture. Here, the toilet seat 12 and the toilet lid 13 are integrated as a toilet seat unit, and in this toilet seat unit, a damper device that reduces the speed when the toilet seat 12 and the toilet lid 13 are flattened by their own weight as necessary. In some cases, an electric device for electrically opening and closing the toilet lid is incorporated.

In any of these cases, as shown in FIG. 1 (b), the western toilet unit of the present embodiment manually lifts the toilet seat 12 (toilet seat unit) from the toilet body 11 and the upper surface of the toilet body 11 is The toilet seat lifting / lowering device 1 that can be cleaned is configured.

As shown in FIGS. 2 (a) to 2 (d) and FIGS. 3 (a) and 3 (b), the toilet seat lifting / lowering device 1 according to the present embodiment is fixed to the upper surface portion of the toilet body 11 (see FIG. 1). Fixing plate 2 with 21 (
Seat plate), an inverted L-shaped stopper plate 3 fixed with screws to the upper end portion of the vertical surface 22 bent upward at the rear end of the fixing plate 2, a horizontal portion 31 of the stopper plate 3, and the fixing plate 2 Two cylindrical guide shafts 41 and 42 (guide members) spanned between the fixed surface 21 and the two guide shafts 41 and 42. 4
A slider 5 that can slide up and down along 2 is supported.

The slider 5 includes bearing portions 51 and 52 having guide holes 511 and 521 into which the guide shafts 41 and 42 are inserted, and a top plate portion 53 that connects upper end portions of the bearing portions 51 and 52. The movable plate 6 is attached to the slider 5 so as to cover the front surface and the top plate portion 53, and the toilet seat 12 (toilet seat unit) is attached to the upper surface of the horizontal portion 60 of the movable plate 6.

(Stopper configuration)
In the left and right bearing portions 51, 52 of the slider 5, square holes 55 are opened in portions facing the vertical surface 22 of the fixed plate 2. Each of the square holes 55 has an engagement member 95 inside.
Is arranged so as to be able to advance and retreat in the horizontal direction, and a spring 97 for urging the engaging member 95 toward the vertical surface 22 of the fixed plate 2 is arranged in the back.

On the other hand, on the vertical surface 22 of the fixed plate 2, a lower concave portion in which the distal end portion of the engaging member 95 enters a position below the line through which the engaging member 95 passes when the slider 5 is moved up and down. 98 is formed on the left and right, and an upper concave portion 99 into which the tip of the engaging member 95 enters is formed on the left and right.

Therefore, the engagement member 95 on the slider 5 side, the spring 97, and the lower concave portion 98 on the vertical surface 22 side of the fixed plate 2 set the holding position of the slider 5 when the toilet seat 12 (toilet seat unit) is lowered. It functions as a first stopper 91 to be defined. Further, the engaging member 9 on the slider 5 side.
5 and the spring 97 and the upper concave portion 99 on the vertical surface 22 side of the fixed plate 2 function as a second stopper 92 that defines the holding position of the slider 5 when the toilet seat 12 (toilet seat unit) is raised.

(Configuration of damper and biasing means)
In the toilet seat lifting / lowering device 1 configured as described above, in this embodiment, the fixing surface 2 of the fixing plate 2 is used.
1 and the top plate portion 53 of the slider 5 are disposed with an air damper mechanism 7 that exerts a drag on the slider 5 when the toilet seat 12 (toilet seat unit) is lowered.

In configuring this air damper mechanism 7, in this embodiment, a cylindrical cylinder 71 extends from the lower surface of the top plate portion 53 of the slider 5 toward the fixed surface 21 of the fixed plate 2.

  On the other hand, although the piston 72 is disposed in the cylinder, the lower end of the piston 72 is not attached to the fixed surface 21 of the fixed plate 2. That is, a cylindrical body 78 extending from the lower end opening of the cylinder 71 to an intermediate position in the cylinder 71 is attached to the stationary surface 21 of the stationary plate 2 in an upright posture. A hole 781 is formed. From the central hole 781, the piston 72 is inserted into the cylindrical body 78 and supported so as to be movable in the sliding direction of the slider 5 while being guided by the inner wall of the central hole 781. A large-diameter head 74 is formed at the upper end of the piston 72. An O-ring 75 is attached to the head 74 in the circumferential groove, and the outer diameter of the O-ring 75 and the inner wall of the cylinder 71 are set to press-fit dimensions. A large-diameter engaging protrusion 77 having an engaging portion 771 is formed at the lower end portion of the piston 72.

  Therefore, when the toilet seat 12 is lifted, the engaging portion is moved during the operation of moving the slider 5 from the solid line that is one holding position of the piston in FIG. 3 to the two-dot chain line that is the other holding position of the piston. The piston 72 moves together with the slider 5 due to the friction between the O-ring 75 and the inner wall of the cylinder 71 due to the press-fitting relationship between the O-ring 75 and the inner wall of the cylinder 71 until 771 comes into contact with the peripheral edge 784 of the central hole 781. However, when the engaging portion 771 comes into contact with the peripheral edge 784 of the center hole 781, the movement of the piston 72 is blocked, so that the outer wall side 750 of the O-ring 75 and the sliding surface 710 which is the inner wall of the cylinder 71 slide. Thus, only the slider 5 moves. Therefore, the head 74 located behind the cylinder 71 relatively moves to the vicinity of the opening of the cylinder 71.

  On the contrary, when the toilet seat 12 is lowered, the slider 5 is moved from the two-dot chain line that is the other holding position of the piston to the solid line that is the one holding position of the piston. Until the lower end surface of the projection 77 is in contact with the fixed surface 21 of the fixed plate 2, the piston 72 moves together with the slider 5 due to friction between the O ring 75 and the inner wall of the cylinder 71 due to the press-fitting relationship. However, when the lower end surface of the engagement protrusion 77 of the piston 72 comes into contact with the fixing surface 21 of the fixing plate 2, the movement of the piston 72 is blocked, so that the sliding that is the outer wall side 750 of the O-ring and the inner wall of the cylinder 71 is performed. The surface 710 slides and only the slider 5 moves. Therefore, the head 74 in the vicinity of the opening of the cylinder 71 relatively moves to the back of the cylinder 71.

  In the case of this embodiment, the effect as an air damper is obtained by moving only the slider 5 after the lower end surface of the engagement protrusion 77 of the piston 72 abuts against the fixed surface 21 of the fixed plate 2. When moving together with the cylinder 71, the effect of the air damper cannot be obtained. However, in order to prevent the toilet seat from being damaged, it is sufficient that the collision speed when the toilet seat collides with the toilet body is sufficiently reduced, and the effect of the air damper can be obtained only in the second half when the toilet seat 2 is lowered. There is no problem. According to this embodiment, since the distance corresponding to the distance to which the piston 72 moves can be shortened, the toilet seat lifting / lowering device 1 can be downsized in the moving direction of the slider 5.

  In addition, a communication hole 76 communicating with the sealed space 73 is formed in the top plate portion 53 corresponding to the back end surface of the cylinder 71.

  4 (a) and 4 (b) are a perspective view of the mortar portion viewed obliquely from above and a cross-sectional view for explaining the mortar portion shown in FIG. As shown in FIGS. 3 and 4, the top plate portion 53 has a communication hole 76 communicating with the sealed space 73 at the center thereof extending in the direction of the axis L <b> 1 (see FIG. 4B) that is the direction of gravity. The communication hole 76 is, in order from the side of the sealed space 73 formed below in the direction of gravity, a small hole portion 76d having a diameter of about 0.2 mm, a mortar portion 76a, and a concave portion recessed on the side of the sealed space 73. 76b. The mortar portion 76a is formed in a mortar shape having an opening area extending in a direction away from the sealed space 73 with the axis L1 as the center. Specifically, as shown in FIG. In the included cross section, the angle formed by the two inclined surfaces L2 and L3 with the axis L1 as the center is set to 59 degrees. However, the angle formed by the two inclined surfaces L2 and L3 is not necessarily limited to 59 degrees, and is released through the communication hole 76 if it is 120 degrees or less, preferably in the range of 30 to 90 degrees. Air noise can be reduced. In addition, the side where the opening area which is one opening end surface of the mortar part 76a spreads is opened to the bottom face 76c of the recessed part 76b.

In addition, the bottom surface 76c of the recess 76b is formed wider than one opening end surface of the mortar portion 76a, and the recess 76b has two inclined surfaces centered on the axis in cross sections including the axis L1 of the mortar portion 76a. Extension lines L2 and L3 (see FIG. 4B). Therefore, the air released from the sealed space 73 forming the recess 76a can be smoothly diffused without being disturbed by the recess 76a.

  5 (a) and 5 (b) are enlarged views showing the vicinity of the piston head in the solid line state shown in FIG. 3 (a), and a cylinder in which the piston of FIG. It is a perspective view.

  As shown in FIG. 5, in the sliding surface 710 on which the piston 72 of the cylinder 71 slides, the second half in which the air pressure in the sealed space 73 increases in the entire sliding direction in which the piston 72 slides. In the portion, an air escape portion 711 is formed to cross the outer wall side 750 of the O-ring 75 that is a sliding portion of the piston 72 that slides on the sliding surface 710 of the cylinder 71 to release the air in the sealed space 73 to the outside. . Since the air escape portion 711 is formed immediately before the position where the volume of the sealed space 73 is minimized, as shown in FIG. 5A, at the position where the volume of the sealed space 73 is minimized, O The outer wall side 750 of the ring 75 does not face the air escape portion 711. However, the air escape portion 711 does not necessarily have to be formed immediately before the position where the volume of the sealed space 73 is minimized. Of the entire range in the sliding direction in which the piston 72 slides, half to the latter half If so, it may be formed anywhere.

  In this embodiment, the length L of the air escape portion 711 is formed larger than the diameter R of the O-ring 75. In FIG. 5, a tapered surface is formed below the length of the air escape portion 711. This tapered surface is formed smoothly after the cylinder 71 having the air escape portion 711 is formed from resin. The length L is a length which does not include the length of the taper. Further, the depth of the air escape portion 711 is such that when the outer wall side 750 of the O-ring 75 moves on the air escape portion 711, the outer wall side 750 of the O-ring 75 that faces the air escape portion 711 enters the air escape portion 711. Even when it enters, it is formed so as not to reach the bottom part 712 of the air escape part 711. Therefore, the air in the sealed space 73 can be released to the outside across the outer wall side 750 of the O-ring 75. Further, since the air escape portion 711 is formed only in a part in the circumferential direction, when the outer wall side 750 of the O-ring 75 is opposed to the air escape portion 711, all other than the air escape portion 711 are included. The portion comes into contact with the sliding surface 710 of the cylinder 71.

Furthermore, in this embodiment, an assist spring 8 (biasing means) made of a compression coil spring is disposed between the fixed surface 21 of the fixed plate 2 and the top plate portion 53 of the slider 5. Here, the assist spring 8 is coaxially disposed around the cylinder 71, and the cylinder 71 also serves as a guide portion of the assist spring 8.

  FIG. 6 is a graph showing the force acting on the toilet seat when the toilet seat mounted on the slider is moved up and down in the toilet seat lifting apparatus to which the present invention is applied. In the graph shown here, the load on the toilet seat 12 in the absence of the assist spring 8 is 50 N, and the force (holding force) required to disengage the first stopper 91 and the second stopper 92 is 30 N. It is expressed as

First, in FIG. 6, when an assist spring 8 having an urging force of 70 N when the slider 5 is in the downward direction and the urging force decreasing to 55 N while the slider 5 moves upward is used as the assist spring 8, The acting load is represented by a thick line L1. Therefore, in order to lift the toilet seat 12 from the state shown in FIG. 1A, a force of 10 N or more may be applied to the toilet seat 12 when releasing the engagement with the first stopper 91, and the first seat After the engagement with the stopper 91 is released, the toilet seat 12 is automatically raised by the urging force of the assist spring 8 without applying a force to the toilet seat 12, and then by the engagement with the second stopper 92. In the state shown in FIG.
The toilet seat 12 automatically stops.

When the toilet seat 12 is lowered from this state, a force for compressing the assist spring 8 is applied in addition to a force of 30 N for releasing the engagement with the second stopper 92, and the toilet seat Although a large force is applied as the seat 12 is lowered, since the air damper mechanism 7 is configured for the slider 5, the lowering speed of the seat 12 can be increased even when the weight is applied to the seat 12. Safe because it is slow. Further, since the lowering speed is slow, the toilet seat 12 does not collide violently with the toilet body 11, and the toilet seat 11 or the like is not damaged.

Moreover, since the slider 5 is held by the first stopper 91 even when the urging force of the assist spring 8 is larger than the weight of the toilet seat 12 and the mechanism that moves up and down integrally with the toilet seat 12, the toilet seat 12 is inadvertently removed from the toilet body 11. It will not float up. Even when the biasing force of the assist spring 8 is smaller than the weight of the toilet seat 12 and the mechanism that moves up and down integrally with the toilet seat 12, the slider 5 can be
Since it is held at 2, there is no further descent.

(Effect of this embodiment)
In this embodiment, the air damper mechanism 7 includes a cylindrical cylinder 71 extending from the lower surface of the top plate member 53 of the slider 5 toward the fixed surface 21 of the fixed plate 2, and the cylinder 71 disposed in the cylinder 71. And a piston 72 supported on the fixed plate 2 side, which forms a sealed space. Therefore, a damper action can be obtained without using oil. Moreover, on the sliding surface 710 on which the piston 72 of the cylinder 71 slides, in the latter half of the entire range in the sliding direction in which the piston 72 slides, the air pressure in the sealed space 73 increases. An air escaping portion 711 for escaping the air in the sealed space 73 to the outside is formed across the outer wall side 750 of the O-ring 75, which is a sliding portion of the piston 72 that slides on the sliding surface 710. Therefore, even when the communication hole 76 is closed by dust or the like, the air from the sealed space 73 can be released through the air escape portion 711. Therefore, the toilet seat 12 can be reliably lowered by suppressing an increase in the air pressure in the sealed space 73.

  In this embodiment, the top plate member 53 is formed with a communication hole 76 that communicates with the sealed space 73, and the opening area extends in the direction away from the sealed space 73 around the axis L <b> 1 in the gravity direction. Has a mortar-shaped mortar portion 76a. Therefore, noise when air from the sealed space 73 is discharged through the communication hole 76 can be suppressed, and silence can be achieved. Moreover, the mortar portion 76a allows the air from the sealed space 73 to be released through the air escape portion 711, although the communication hole 76 is likely to be closed by dust or the like. Therefore, the toilet seat 12 can be reliably lowered by suppressing an increase in the air pressure in the sealed space 73.

  In this embodiment, since the air escape portion 711 is formed only in a part in the circumferential direction, when the outer wall side 750 of the O-ring 75 faces the air escape portion 711, all other than the air escape portion 711 are used. This part comes into contact with the sliding surface 710 of the cylinder 71. That is, since all the parts except the part in the circumferential direction where the air escape part 711 is formed become the sliding surface 710 of the piston, the air escape part 711 does not hinder the operation of the piston 72.

  In this embodiment, since the air escape portion 711 is formed immediately before the position where the volume of the sealed space 73 is minimized, as shown in FIG. 5A, the piston whose volume of the sealed space 73 is minimized. At the holding position 72, the outer wall side 750 of the O-ring 75 does not face the air escape portion 711. Therefore, the O-ring 75 faces the air escape portion 711 immediately before the position where the volume of the sealed space 73 is minimized, and the time for the O-ring 75 to face the air escape portion 711 is extremely short. In addition, it is possible to prevent the piston 72 from malfunctioning by entering the deep part of the air escape part 711 due to the change of the O-ring 75 with time.

  In this embodiment, since the bottom surface 76c of the recess 76b is formed wider than one opening end surface of the mortar portion 76a, the dust that has fallen into the recess 76b accumulates around the mortar portion 76a, and thus enters the sealed space 73. The amount of garbage can be reduced.

(Other embodiments)
In the said embodiment, although the air escape part 711 is formed in one part in the circumferential direction, it is not limited to this. That is, you may form in multiple places.

  Moreover, in the said embodiment, although it has the recessed part 76b, it does not necessarily need to have the recessed part 76b. When the concave portion 76 b is not provided, the side of the mortar portion 76 a on which the opening area that is one opening end surface is widened is configured to open in the same plane as the top surface of the top plate member 53.

Moreover, in the said embodiment, although the compression coil spring (assist spring 8) was used as an urging means to always urge the toilet seat 12 upward, various springs such as a tension coil spring may be used.

  Further, in the above embodiment, the cylinder 71 is formed on the slider 5 side and the piston 72 is formed on the fixed plate 2 side. However, the piston 72 is formed on the slider 5 side and the cylinder is formed on the fixed plate 2 side. 71 may be configured.

(A), (b) is explanatory drawing which shows the state which raised the toilet seat, and the state which raised the toilet seat from the toilet body main body in the western style toilet unit using the toilet seat raising / lowering apparatus to which this invention is applied, respectively. . (A) thru | or (d) are the top views, the front view, the right view, and the front view of the state which removed the movable plate of the toilet seat raising / lowering apparatus to which this invention is applied. (A), (b) is a schematic sectional drawing in the AA line of Fig.2 (a), and a schematic sectional drawing in the BB line of Fig.2 (a). (A), (b) is the perspective view which looked at the mortar part from diagonally upward shown in FIG. 3, and sectional drawing for demonstrating a mortar part. (A), (b) is the enlarged view which expands and shows the head periphery of the piston in the state of the continuous line shown to Fig.3 (a), and the perspective view which looked at the cylinder which deleted the piston of (a) from diagonally downward It is. In the toilet seat lifting / lowering apparatus to which the present invention is applied, when the toilet seat attached to the slider via the movable plate is lifted / lowered, it is a graph showing the force acting on the toilet seat.

Explanation of symbols

1 Toilet seat lifting device 2 Fixed plate (seat plate)
5 Slider 7 Air damper mechanism 11 Toilet body 12 Toilet seat 41, 42 Guide shaft (guide member)
71 Cylinder 72 Piston 73 Sealed space 76 Communication hole 76a Conical portion 76b Recess 76c Bottom surface 710 Sliding surface 711 Air escape portion 750 O-ring outer wall side (sliding portion)

Claims (5)

In a toilet seat lifting apparatus having a seat plate that is a fixed portion to a western toilet body, a guide member that rises from the seat plate, and a slider that is configured to be movable up and down along the guide member and to which the toilet seat is attached.
Between the seat plate and the slider, there is an air damper mechanism that exerts a drag force on the slider when the toilet seat is lowered, and the air damper mechanism is on one side of the seat plate and the slider. And a piston provided on either side of the seat plate and the slider, which forms a sealed space in the cylinder, and with relative movement by sliding between the cylinder and the piston, A communication hole through which the air in the sealed space flows is formed in the slider or the piston, and a sliding surface on which the piston of the cylinder slides has an air flow in the sealed space out of the entire range in the sliding direction. An air escaping portion for escaping air in the sealed space is formed in the latter half of the pressure increase across the sliding portion of the piston sliding on the sliding surface. Toilet seat lifting device to.   2. The communication hole according to claim 1, wherein the communication hole extends in a direction of gravity, and an end of the opposite side of the sealed space formed below the direction of gravity is widened in a direction away from the sealed space. A toilet seat lifting apparatus having a mortar portion formed in a mortar shape.   The toilet seat lifting / lowering device according to claim 1 or 2, wherein the air escape portion is formed only in a part in a circumferential direction.   4. The air escape portion according to claim 3, wherein the air escape portion is formed immediately before a position where the volume of the sealed space is minimized, and the sliding portion of the piston is located at the position where the volume of the sealed space is minimized. A toilet seat lifting and lowering device characterized by not being opposed to the toilet seat. In Claim 1 or 2, the opening end surface on the side where the opening area of the mortar portion has widened is formed on the bottom surface of a recess formed on the end surface on the discharge side from which air from the sealed space is discharged. A toilet seat lifting device.

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