JP2009106428A - Toilet seat lift and western-style toilet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet seat lift preventing considerable inclination of a toilet seat unit in a lateral width direction even if a toilet seat unit is lifted with power, and to provide a Western-style toilet with the same. <P>SOLUTION: In the toilet seat lift 1, a first energization member 81 is disposed on the side opposite to a portion 50 for transmitting power from a power driving device 5 to the movable member 4 relative to the center of gravity G of the movable member 4 loaded with the toilet seat unit 10, and a second energization member 82 is disposed on the side opposite to the center of gravity G of the movable member 4 loaded with the toilet seat unit 10 relative to the power transmitting portion 50, in a lateral width direction of a movable member 4. Accordingly, when the toilet seat unit 10 is lifted, the power driving device 5 requires a reduced power. The center of gravity G in the width direction of the movable member 4 loaded with the toilet seat unit 10 is displaced from the position of the power transmitting portion 50 in the lateral width direction, and the movable member 4 and the toilet seat unit 10 are elevated without inclination in the lateral width direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a toilet seat lifting / lowering device for lifting / lowering a toilet seat of a Western-style toilet and a western toilet equipped with the toilet seat lifting / lowering device.

In a Western-style toilet, the toilet seat and toilet lid rotate around the back and become a prone posture and a standing posture on the toilet body. For this reason, even if it is going to clean the back of the upper surface of a toilet bowl body, there is only a very narrow gap between the toilet bowl body and the toilet seat, and even if you want to clean that part, you cannot reach it. Therefore, an electric toilet seat lifting / lowering device has been devised that can use a small stepping motor or the like as a motive power to make the toilet seat unit float from the toilet body (for example, Patent Documents 1 and 2).
JP 2004-350892 A JP 2005-211106 A

  However, in recent years, the weight of the toilet seat unit has increased as the structure of the toilet seat unit becomes more complex and dense due to the addition of a washing function, a deodorizing function, a heating function, an automatic opening / closing function of the toilet lid, etc. It is coming. For this reason, when a small stepping motor is used like the toilet seat lifting apparatus described in Patent Documents 1 and 2, there is a problem that power is insufficient and the toilet seat unit cannot be lifted or lowered.

  Further, when the structure of the toilet seat unit is complicated and the density is increased, the arrangement position of the members constituting the toilet seat lifting / lowering device is limited, so that the position of the center of gravity of the movable member with the toilet seat unit mounted (for example, the movable member) It is difficult to match the position of the power transmission portion from the electric drive device to the toilet seat unit in the width direction. For this reason, when raising and lowering the toilet seat unit, there is a problem that a moment in a direction in which the toilet seat unit is tilted in the width direction acts on the toilet seat unit, and the toilet seat unit is largely tilted in the width direction. When the toilet seat unit is lifted and lowered in such an oblique posture, a biased force is applied to the guide shaft with respect to the toilet seat unit, resulting in generation of wear on the guide shaft, an increase in power loss, a decrease in appearance, and the like.

  As a configuration that can eliminate such inclination, a configuration in which the power transmission unit from the motor to the toilet seat unit is arranged at a position directly below or above the center of gravity of the movable member with the toilet seat unit mounted, If such a configuration is adopted, the height of the toilet seat lifting device increases, so that it becomes difficult to mount the toilet seat lifting device on the Western-style toilet. In addition, a configuration in which the power transmission unit from the electric drive device to the toilet seat unit is arranged at the front position or the rear position of the center of gravity position of the movable member in a state where the toilet seat unit is mounted can be considered. Since the dimension of the toilet seat lifting device in the front-rear direction increases, it becomes difficult to mount the toilet seat lifting device on the Western style toilet.

  In view of the above-described problems, an object of the present invention is to provide a toilet seat lifting device and a Western-style toilet provided with the toilet seat unit, in which the toilet seat unit does not greatly tilt in the lateral width direction even when the toilet seat unit is lifted and lowered electrically.

  In order to solve the above-described problems, in the present invention, the toilet seat is provided with a fixed portion that is fixed to a western toilet body, a movable member to which the toilet seat unit is attached, and a guide mechanism that guides the movable member in the vertical direction. In the apparatus, an electric drive device that electrically moves the movable member up and down, and a power transmission unit from the electric drive device to the movable member with respect to a central position in the width direction of the movable member in the width direction of the movable member; Comprises a first urging member for urging the movable member upward at the opposite side position.

  In another form of the present invention, a Western-style having a toilet seat lifting device including a fixed portion fixed to a Western-style toilet body, a movable member to which a toilet seat unit is attached, and a guide mechanism for guiding the movable member in the vertical direction. In the toilet, the toilet seat lifting and lowering device includes an electric drive device that lifts and lowers the movable member electrically, and a lateral center of gravity of the movable member in a lateral direction of the movable member in a state in which the toilet seat unit is attached. And a first urging member that urges the movable member upward at a position opposite to the power transmission portion from the electric drive device to the movable member.

  In the present invention, since the first urging member that urges the movable member upward is disposed, the electric drive device only needs to exhibit a small power when the toilet seat unit is raised. In addition, the center of gravity of the movable member in the width direction of the movable member with the toilet seat unit attached is, for example, the central position of the movable member in the lateral width direction, and the position of the power transmission unit from the electric drive device to the movable member. When the toilet seat unit is raised, a moment in the direction of tilting the toilet seat unit in the lateral width direction is applied when the toilet seat unit is raised, but in the present invention, in the width direction of the movable member with the toilet seat unit attached, Since the electric drive device and the first urging member push up the movable member on both sides of the center of gravity position, the movable member and the toilet seat unit can be prevented from tilting in the lateral width direction. In particular, in the power transmission unit, if the gravity of the movable member and the toilet seat unit and the biasing force of the first biasing member are adjusted to cancel the moment of each force applied to the movable member and the toilet seat unit, the movable member and It is possible to reliably prevent the toilet seat unit from being inclined in the lateral width direction.

  In the toilet seat lifting / lowering device of the present invention, in the lateral width direction of the movable member, the movable member is biased upward at a position opposite to the center position of the movable member in the lateral width direction with respect to the power transmission unit. It is preferable that an urging member is provided. In the Western-style toilet according to the present invention, the movable member is movable at a position opposite to the center of gravity of the movable member in the width direction when the toilet seat unit is attached to the power transmission unit in the width direction of the movable member. It is preferable that a second biasing member that biases the member upward is provided. If comprised in this way, when energizing a movable member upward, an electric drive device should just exhibit much smaller power. Further, when the toilet seat unit is raised, the electric drive device and the second urging member are provided on one side of the center of gravity of the movable member in the width direction (for example, the center position in the width direction of the movable member) with the toilet seat unit attached. Pushes up the movable member, and the first biasing member pushes up the movable member on the other side, so that the movable member and the toilet seat unit can be prevented from tilting in the lateral width direction. In particular, in the power transmission unit, the gravity of the movable member and the toilet seat unit, the urging force of the first urging member, and the urging force of the second urging member are adjusted to be applied to the movable member and the toilet seat unit. If the moment of force is canceled, the movable member and the toilet seat unit can be reliably prevented from tilting in the lateral width direction.

  In the present invention, the guide mechanism includes a first guide shaft and a second guide shaft that stand up and support the movable member at a position spaced apart in the lateral width direction of the movable member, and the first guide shaft is The second guide shaft is disposed at a position closer to the first urging member than the power transmission unit, and is disposed at a position closer to the power transmission unit than the first urging member. preferable. If comprised in this way, it can prevent more reliably that a movable member and a toilet seat unit incline in a horizontal width direction.

  In this invention, it is preferable that the said power transmission part and the said biasing member are each arrange | positioned in the range of the width direction of the said toilet seat unit. If comprised in this way, size reduction of a toilet seat raising / lowering apparatus can be achieved.

  In the present invention, since the first urging member that urges the movable member upward is disposed, the electric drive device only needs to exhibit a small power when the toilet seat unit is raised. Therefore, a small stepping motor having a small power can be used as a drive source for the electric drive device. In addition, since the electric drive device and the first biasing member push up the movable member on both sides of the center of gravity in the width direction of the movable member with the toilet seat unit attached, the movable member and the toilet seat unit are inclined in the lateral width direction. Can be prevented. When raising the toilet seat unit, the electric drive device and the second biasing member push up the movable member on one side of the center of gravity in the width direction of the movable member with the toilet seat unit attached, and the first on the other side. Even when the biasing member pushes up the movable member, the movable member and the toilet seat unit can be prevented from tilting in the lateral width direction. In particular, if the gravity of the movable member and the toilet seat unit and the biasing force of the biasing member are adjusted to cancel the moment of each force applied to the movable member and the toilet seat unit, the movable member and the toilet seat unit are inclined in the lateral width direction. Can be reliably prevented. Therefore, since it is possible to avoid the toilet seat unit from moving up and down in an oblique posture, no biased force is applied to the guide shaft or the like for the toilet seat unit 10. Therefore, it is possible to prevent occurrence of wear on the guide shaft, increase in power loss, deterioration in appearance, and the like.

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

(Composition of Western style toilet)
FIGS. 1A and 1B are respectively an explanatory diagram of a state in which the toilet seat unit is lowered and a perspective view in which the toilet seat unit is raised in a Western-style toilet unit using the toilet seat lifting apparatus to which the present invention is applied. FIG.

  As shown in FIGS. 1 (a) and 1 (b), a Western-style toilet unit according to this embodiment includes a Western-style toilet body 11, a toilet seat 12 that is opened and closed on the toilet body 11, and the toilet seat 12 that is opened and closed. The toilet seat 12 and the toilet lid 13 are rotated around the back to be in a prone posture and a standing posture. The toilet seat 12 and the toilet lid 13 are integrated as a toilet seat unit 10. The toilet seat unit 10 includes a damper device that reduces the speed when the toilet seat 12 and the toilet lid 13 are flattened by its own weight, if necessary. There is a case where an electric device for opening and closing the toilet lid electrically is built. The western toilet unit of the present embodiment is configured with a toilet seat lifting / lowering device 1 that lifts the toilet seat 12 (toilet seat unit 10) from the toilet main body 11 electrically to clean the upper surface of the toilet main body 11 to the back.

(Configuration of toilet seat lifting device)
FIGS. 2A and 2B are each an explanatory diagram of a state in which the movable member to which the toilet seat unit is coupled is lowered and a perspective view of the state in which the movable member is raised in the toilet seat lifting apparatus to which the present invention is applied. FIG. 3A and 3B are a cross-sectional view and a DD ′ cross-sectional view, respectively, in a state where the movable member is lowered in the toilet seat lifting / lowering apparatus to which the present invention is applied.

  As shown in FIGS. 2 (a), 2 (b) and FIGS. 3 (a), 3 (b), the toilet seat lifting / lowering device 1 is fixed to the upper surface portion of the toilet body 11 shown in FIG. ), A movable member 4 to which the toilet seat unit is attached, and a guide mechanism 3 for guiding the movable member 4 in the vertical direction. The guide mechanism 3 includes a first guide shaft 31 and a second guide shaft 32 erected from the fixed member 2 at positions separated from each other in the lateral width direction of the movable member 4, and the movable member 4 is first movable up and down. Are supported by the guide shaft 31 and the second guide shaft 32.

  The fixing member 2 includes a SUS seat plate 21 fixed to the upper surface of the toilet body 11 with screws, a back plate 22 rising from a part of the rear end portion of the seat plate 21, and a part of the upper end portion of the back plate 22. The upper plate 23 has a top plate 23 that is bent further forward and faces the seat plate 21, and upper ends of the first guide shaft 31 and the second guide shaft 32 that are raised from the seat plate 21 are formed on the upper plate 23. Each is supported by a shaft hole. The back plate 22 is formed behind the first guide shaft 31, but is not arranged behind the second guide shaft 32.

  The movable member 4 includes a slider 40 and a movable plate 6 attached to the front surface of the slider 40 with a screw 410. The slider 40 is formed with a bearing 41 into which the first guide shaft 31 is inserted. Yes. The movable plate 6 includes a horizontal plate portion 60 to which the toilet seat unit 10 is attached, and a first vertical plate portion 61 that is bent upward from the rear end portion at the center portion in the width direction of the horizontal plate portion 60. The first vertical plate portion 61 is a connecting portion with the slider 40, and the horizontal plate portion 60 is formed with a plurality of attachment holes (not shown) to the toilet seat unit 10 as necessary. Further, the horizontal plate portion 60 defines the width dimension of the movable member 4. In the movable plate 6, a second vertical plate portion 62 and a third vertical plate portion 63 that are bent upward from the rear end portion of the horizontal plate portion 60 are formed on the left and right sides of the first vertical plate portion 61. The upper ends of the second vertical plate portion 62 and the third vertical plate portion 63 are bent rearward to form a first horizontal support plate portion 64 and a second horizontal support plate portion 65.

(Configuration of electric drive device)
In the toilet seat lifting / lowering device 1 of this embodiment, an electric drive device 5 is attached to the front surface of the back plate 22 of the fixed member 2 in order to raise and lower the movable member 4 to which the toilet seat unit 10 is attached electrically. The electric drive device 5 includes a stepping motor 55 (drive source) capable of rotating in both forward and reverse directions, and a reduction gear train (not shown) that transmits the rotational driving force of the stepping motor 55, and a reduction wheel. An output pinion 51 is connected to the last stage of the column. In addition, an output pinion 51 and a rack 45 constituting a rack-pinion mechanism are formed on the side surface of the slider 40. For this reason, the electric drive device 5 raises and lowers the movable member 4 together with the toilet seat unit 10 with the meshing position of the output pinion 51 and the rack 45 as the power transmission unit 50. The electric drive device 5 includes a position detection mechanism (not shown) having a potentiometer and the like, and the power supply to the stepping motor 55 is controlled based on the detection result of the potentiometer.

(Guide mechanism and stopper mechanism)
4 (a), 4 (b), and 4 (c) are cross-sectional views taken along the line AA ′ in a state where the movable member is lowered in the toilet seat lifting / lowering apparatus to which the present invention is applied, and A in the state where the movable member is raised. -A 'sectional drawing and a BB' sectional view in the state where a movable member was lowered.

  As shown in FIG. 4A, on the side where the first guide shaft 31 is formed, the slider 40 of the movable member 4 is formed with a bearing 41 into which the first guide shaft 31 is inserted. On the back side of the slider 40, a cylindrical projecting portion 47 that projects at a portion facing the back plate 22 of the fixing member 2 is formed. An engaging member 95 is disposed in the projecting portion 47 so as to be able to advance and retract in the horizontal direction, and a spring 96 that urges the engaging member 95 toward the back plate 22 of the fixing member 2 is disposed in the back thereof. ing. The back plate 22 of the fixing member 2 is formed with a lower recess 97 into which the tip of the engagement member 95 enters at a position below the line through which the engagement member 95 passes when the slider 40 is moved up and down. On the other hand, an upper concave portion 98 into which the distal end portion of the engaging member 95 enters is formed at the upper position.

  Therefore, the engaging member 95, the spring 96, and the lower recess 97 function as a first stopper that defines the holding position of the slider 40 when the toilet seat unit 10 is lowered. Further, as shown in FIG. 4B, the engaging member 95, the spring 96, and the upper concave portion 98 function as a second stopper that defines the holding position of the slider 40 when the toilet seat unit 10 is raised. . Further, in both the first stopper and the second stopper, the engaging member 95 generates a click feeling when engaged with the lower recess 97 and the upper recess 98.

  On the other hand, as shown in FIG. 4C, on the side where the second guide shaft 32 is formed, the reinforcing plate 66 is fixed to the back surface of the first horizontal support plate portion 64 with screws. The first horizontal support plate portion 64 and the reinforcing plate 66 are formed with a U-shaped groove 67 having an open end on the side where the first guide shaft 31 is located. A U-shaped sliding cap 68 is fitted into the U-shaped groove 67, and only the second guide shaft 32 is loosely fitted inside the sliding cap 68. Accordingly, the second guide shaft 32 mainly has a function of preventing the movable member 4 from swinging in the front-rear direction around the first guide shaft 31.

(Configuration of biasing member)
FIGS. 5A and 5B are explanatory views of a first urging member and a second urging member mounted on a toilet seat lifting / lowering apparatus to which the present invention is applied, respectively.

  2 (a), 2 (b) and FIGS. 3 (a), 3 (b) again, in the toilet seat lifting / lowering device 1 of this embodiment, the center of gravity G of the toilet seat unit 10 is attached to the movable member 4, For example, the movable member 4 (movable plate 68 horizontal plate portion 60) is at the center in the width direction (direction indicated by arrow W). Further, in the lateral width direction of the movable member 4, the power transmission unit 50 (meshing position between the output pinion 51 and the rack 45) from the electric drive device 5 to the movable member 4 is the movable member 4 with the toilet seat unit 10 attached. Is shifted to the left side in FIG. 2 and FIG. In this embodiment, the case where the gravity center position G of the movable member 4 with the toilet seat unit 10 attached is illustrated at the center position of the movable member 4 in the lateral width direction.

  In such a configuration, when the toilet seat unit 10 is raised, a moment that tilts the movable member 4 and the toilet seat unit 10 in the lateral width direction is applied, and as shown by an arrow R in FIG. There is a possibility that the toilet seat unit 10 may tilt in the width direction.

  Therefore, in the present embodiment, in the lateral width direction of the movable member 4, the center of gravity G in the state in which the toilet seat unit 10 is attached to the movable member 4 is opposite to the power transmission unit 50 (toward the FIGS. 2 and 3). On the right side, a first urging member 81 made of a compression coil spring that urges the movable member 4 upward is disposed.

  In mounting this first urging member 81, in this embodiment, a cylindrical lower guide 811 is attached to the upper surface of the seat plate 21 of the fixing member 2 with a screw as shown in FIG. An annular gap formed between the lower guide 811 and the upper guide 812 is fixed to the lower surface of the first horizontal support plate portion 64 with a cylindrical upper guide 812 fitted inside the lower guide 811 with screws. A first biasing member 81 made of a coil spring is disposed inside. Here, the first biasing member 81 is disposed in a compressed state between the bottom portion 811a of the lower guide 811 and the flange portion 813 of the upper guide 812, and biases the movable member 4 upward. The first horizontal support plate portion 64 and the upper guide 812 are positioned by positioning holes 64a formed in the first horizontal support plate portion 64 and positioning protrusions 812a formed in the upper guide 812.

  Furthermore, in this embodiment, as shown in FIGS. 2A and 2B and FIGS. 3A and 3B, the movable member 4 is moved relative to the power transmission unit 50 in the lateral width direction of the movable member 4. On the side opposite to the center of gravity position G with the toilet seat unit 10 attached (on the left side in FIGS. 2 and 3), a second urging member 82 composed of a compression coil spring that urges the movable member 4 upward. Is arranged.

  When mounting such a second urging member 82, as in the case of the first urging member 81, as shown in FIG. While the guide 821 is attached with a screw, a cylindrical upper guide 822 that fits inside the lower guide 821 is fixed to the lower surface of the second horizontal support plate portion 65 with a screw, and between the lower guide 821 and the upper guide 822. A second urging member 82 made of a coil spring is disposed in the annular gap configured as described above. Here, the second urging member 82 is disposed in a compressed state between the bottom portion 821a of the lower guide 821 and the flange portion 823 of the upper guide 822, and urges the movable member 4 upward. Note that the second horizontal support plate portion 65 and the upper guide 822 are positioned by positioning holes 65 a formed in the second horizontal support plate portion 65 and positioning protrusions 822 a formed in the upper guide 822.

  When the first urging member 81 and the second urging member 82 are arranged in this manner, the first urging member 81 and the second urging member 82 are within the range in the lateral width direction of the toilet seat unit 10. And the electric drive device 5 is also disposed within the range of the toilet seat unit 10 in the lateral width direction.

(Explanation of toilet seat lifting and lowering)
The toilet seat lifting / lowering device 1 of this embodiment is used in a state where the seat plate 21 is fixed to the upper surface portion of the toilet body 11 (see FIG. 1), while the toilet seat unit 10 is attached to the horizontal plate portion 60 of the movable plate 6. .

  During normal use, the toilet seat unit 10 is used in a lowered state as shown in FIGS. 1 (a), 2 (a), 3 (a), 3 (b), and 4 (a). In this state, the engaging member 95 fits into the lower concave portion 97 of the back plate 22 of the fixing member 2 so that the first stopper holds the toilet seat unit 10 at the lowest position. Therefore, in this position, the toilet seat unit 10 is not inadvertently raised by the engaging force of the first stopper, the detent torque of the stepping motor 55, and the weight of the toilet seat unit 10, and the first biasing member 81 and The second urging member 82 is maintained in a compressed state. In this state, the potentiometer outputs that the toilet seat unit 10 is in the lowest position.

  From this state, when the toilet seat unit 10 is to be lifted to start cleaning, when a predetermined switch operation is performed, the stepping motor 55 rotates in the positive direction for a predetermined number of steps or for a predetermined time. As a result, the rotational kinetic force of the stepping motor 55 is transmitted to the output pinion 51 via the reduction gear train, and the output pinion 51 is as shown in FIGS. 1B, 2B, and 4B. Then, the movable member 4 is raised through the rack 45. Therefore, the engagement with the first stopper is released, and the movable member 4 and the toilet seat unit 10 are raised together. At that time, the first horizontal support plate portion 64 and the second horizontal support plate portion 65 of the movable plate 6 are urged upward by the first urging member 81 and the second urging member 82, respectively. Therefore, the movable member 4 and the toilet seat unit 10 rise easily.

  Then, in the second stopper, after the toilet seat unit 10 is raised until the engaging member 95 is engaged with the upper concave portion 98, the stepping motor 55 is stopped. Until then, since the output of the potentiometer changes, it can be detected from the output that the toilet seat unit 10 has been raised to a predetermined position. Further, the fact that the toilet seat unit 10 has been raised to a predetermined position can be notified by a click sound generated by the second stopper. Further, when the toilet seat unit 10 is stopped at the uppermost position, the engaging force of the second stopper, the detent torque of the stepping motor 55, the urging force of the first urging member 81, and the urging force of the second urging member 82 are applied. The position of the toilet seat unit 10 is maintained by the force, and the toilet seat unit 10 does not fall by its own weight.

  When cleaning is completed and the toilet seat unit 10 is to be lowered, when a predetermined switch operation is performed, the stepping motor 55 rotates in the reverse direction for a predetermined number of steps or for a predetermined time. As a result, the rotational driving force of the stepping motor 55 is transmitted to the output pinion 51, and the output pinion 51 lowers the movable member 4 via the rack 45. Therefore, the engagement with the second stopper is released, and the movable member 4 and the toilet seat unit 10 are lowered integrally.

  Then, in the first stopper, after the toilet seat unit 10 is lowered until the engaging member 95 is engaged with the lower concave portion 97, the stepping motor 55 is stopped. Until then, since the output of the potentiometer changes, it can be detected from the output that the toilet seat unit 10 has been lowered to a predetermined position. Further, the fact that the toilet seat unit 10 has been lowered to a predetermined position can be notified by a click sound generated by the first stopper.

(Main effects of this form)
As described above, since the first urging member 81 that urges the movable member 4 upward is disposed in the toilet seat lifting / lowering device 1 and the western toilet of this embodiment, when the toilet seat unit 10 is raised, The drive device 5 should just exhibit small power.

  Further, in this embodiment, the center of gravity position G in the width direction of the movable member 4 with the toilet seat unit 10 attached is, for example, the center position in the width direction of the movable member 4, and this center of gravity position G (center position) Although the position of the power transmission unit 50 from the electric drive device 5 to the movable member 4 is shifted in the lateral width direction, the electric drive device is located on both sides of the center of gravity position G in the width direction of the movable member 4 with the toilet seat unit 10 attached. 5 and the first urging member 81 push up the movable member 4, respectively, so that the movable member 4 and the toilet seat unit 10 can be prevented from being inclined in the lateral width direction. In particular, in the power transmission unit 50, the moment of each force applied to the movable member 4 and the toilet seat unit 10 by adjusting the gravity position G of the movable member 4 and the toilet seat unit 10 and the biasing force of the first biasing member 81. Can be reliably prevented from tilting the movable member 4 and the toilet seat unit 10 in the lateral width direction.

  Furthermore, in the toilet seat lifting / lowering device 1 and the western toilet of this embodiment, the center of gravity G (movable) of the movable member 4 in the width direction when the toilet seat unit 10 is attached to the power transmission unit 50 in the lateral width direction of the movable member 4. A second urging member 82 that urges the movable member 4 upward at a position opposite to the center position of the member 4 in the lateral width direction is used. For this reason, when the movable member 4 is urged upward, the electric drive device 5 only has to exhibit even smaller power.

  Furthermore, when the toilet seat unit 10 is raised, the electric drive device 5 and the second urging member 82 move the movable member 4 on one side of the center of gravity position G in the width direction of the movable member 4 with the toilet seat unit 10 attached. Since the first biasing member 81 pushes up the movable member 4 on the other side, the movable member 4 and the toilet seat unit 10 can be prevented from tilting in the lateral width direction. In particular, in the power transmission unit 50, the gravity of the movable member 4 and the toilet seat unit 10, the urging force of the first urging member 81, and the urging force of the second urging member 82 are adjusted, and the movable member 4 is adjusted. If the moments of the forces applied to the toilet seat unit 10 are offset, the movable member 4 and the toilet seat unit 10 can be reliably prevented from tilting in the lateral width direction.

  Therefore, according to this embodiment, it is possible to avoid the toilet seat unit 10 from moving up and down in an oblique posture, so that a biased force is applied to the first guide shaft 31 and the second guide shaft 32 with respect to the toilet seat unit 10. There is no. Therefore, it is possible to prevent the first guide shaft 31 and the second guide shaft 32 from generating wear, increasing power loss, and reducing appearance.

  The first guide shaft 31 is disposed at a position closer to the power transmission unit 50 than the first biasing member 81, and the second guide shaft 32 is moved from the power transmission unit 50 to the first biasing member 81. Since it is arrange | positioned in the near position, it can prevent more reliably that the movable member 4 and the toilet seat unit 10 incline in a horizontal width direction.

  Furthermore, since the power transmission part 50, the 1st biasing member 81, and the 2nd biasing member 82 are each arrange | positioned in the range of the width direction of the toilet seat unit 10, size reduction of the toilet seat raising / lowering apparatus 10 is achieved. be able to.

(Other embodiments)
In the above-described embodiment, the first biasing member 81 on the opposite side of the power transmission unit 50 with respect to the center of gravity position G with the toilet seat unit 10 attached to the movable member 4 in the lateral width direction of the movable member 4. The second urging member 82 is disposed on the opposite side of the center of gravity G when the toilet seat unit 10 is attached to the movable member 4 with respect to the power transmission unit 50, as shown in FIG. Further, only the first urging member 81 is disposed on the opposite side of the power transmission unit 50 with respect to the center of gravity position G with the toilet seat unit 10 attached to the movable member 4, and the second urging member 82. You may employ | adopt the structure which abbreviate | omitted. In addition to the first urging member 81 and the second urging member 82, three or more urging members such as a third urging member may be used.

  In the above embodiment, compression coil springs are used as the first urging member 81 and the second urging member 82. However, a tension coil spring, a spiral spring, a leaf spring, or a bamboo spring can be used in addition to the compression coil spring. Good. Further, when a compression coil spring or the like is used as the first urging member 81 and the second urging member 82, the urging force changes in the compressed state, but the movable member 4 and the toilet seat unit 10 are, for example, in the height direction. If the urging force of the first urging member 81 and the second urging member 82 is set in the intermediate position, the first guide shaft 31 and the second guide shaft 32 generate wear and power loss. Can be effectively prevented from increasing, deterioration in appearance, and the like.

(A), (b) is the explanatory drawing of the state which lowered the toilet seat unit, and the perspective view which shows the state which raised the toilet seat unit, respectively in the western style toilet unit using the toilet seat raising / lowering apparatus to which this invention is applied. is there. (A), (b) is the explanatory drawing of the state which lowered | hung the movable member to which a toilet seat unit is connected, and the perspective view which shows the state which raised the movable member in the toilet seat raising / lowering apparatus to which this invention is applied, respectively. is there. (A), (b) is the cross-sectional view and DD 'sectional drawing in the state which respectively moved the movable member in the toilet seat raising / lowering apparatus to which this invention is applied. (A), (b), (c) is a sectional view taken along the line AA ′ in a state where the movable member is lowered in the toilet seat lifting apparatus to which the present invention is applied, and AA in a state where the movable member is raised. 'Cross sectional view and BB' sectional view in a state where the movable member is lowered. (A), (b) is explanatory drawing of the 1st biasing member and the 2nd biasing member which are each mounted in the toilet seat raising / lowering apparatus to which this invention is applied. It is explanatory drawing of another toilet seat lifting / lowering apparatus to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Toilet seat elevating device 2 Fixed part 3 Guide mechanism 4 Movable member 5 Electric drive device 6 Movable plate 10 of movable member Toilet seat unit 31 1st guide shaft (guide mechanism)
32 Second guide shaft (guide mechanism)
40 Slider 45 of movable member Rack 50 Power transmission unit 51 Output pinion 55 Stepping motor 81 First biasing member 82 Second biasing member

Claims (7)

In a toilet seat lifting and lowering device including a fixed portion fixed to a western toilet body, a movable member to which a toilet seat unit is attached, and a guide mechanism for guiding the movable member in the vertical direction,
An electric drive device that raises and lowers the movable member by electricity, and a side opposite to the power transmission portion from the electric drive device to the movable member with respect to a center position in the horizontal width direction of the movable member in the lateral width direction of the movable member And a first urging member for urging the movable member upward at a position.   A second urging member that urges the movable member upward in a lateral direction of the movable member at a position opposite to a center position in the lateral direction of the movable member with respect to the power transmission unit; The toilet seat lifting / lowering device according to claim 1. The guide mechanism includes a first guide shaft and a second guide shaft that stand up and support the movable member at positions separated in the lateral width direction of the movable member,
The first guide shaft is disposed at a position closer to the power transmission unit than the first biasing member, and the second guide shaft is closer to the first biasing member than the power transmission unit. The toilet seat lifting / lowering device according to claim 1, wherein the toilet seat lifting / lowering device is disposed on the toilet seat. In a Western-style toilet having a toilet seat lifting device including a fixed portion fixed to a Western-style toilet body, a movable member to which a toilet seat unit is attached, and a guide mechanism for guiding the movable member in the vertical direction,
The toilet seat lifting and lowering device includes an electric drive device that electrically lifts and lowers the movable member, and the electric drive with respect to the center of gravity of the movable member in the width direction in the width direction of the movable member when the toilet seat unit is attached. A Western-style toilet comprising a first urging member for urging the movable member upward at a position opposite to the power transmission portion from the apparatus to the movable member.   The toilet seat lifting device moves the movable member upward at a position opposite to the center of gravity of the movable member in the width direction when the toilet seat unit is attached to the power transmission unit in the width direction of the movable member. The western toilet according to claim 4, further comprising a second urging member for urging the urine.   6. The Western-style toilet according to claim 4, wherein the power transmission unit and the urging member are each disposed within a range in a width direction of the toilet seat unit. The guide mechanism includes a first guide shaft and a second guide shaft that stand up and support the movable member at positions separated in the lateral width direction of the movable member,
The first guide shaft is disposed at a position closer to the power transmission unit than the first biasing member, and the second guide shaft is closer to the first biasing member than the power transmission unit. The Western-style toilet according to any one of claims 4 to 6, wherein the western-style toilet is disposed.

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