JP6911539B2 - Toilet seat device - Google Patents

Description

The present invention relates to a rotary damper and a toilet seat device.

Conventionally, as a rotary damper of this type, one provided on an opening / closing member such as a toilet seat or a toilet lid that opens / closes by rotation has been proposed (see, for example, Patent Document 1). This rotary damper includes a tubular case and a shaft-shaped rotary member arranged in the case and connected to the rotary shaft of the opening / closing member, and oil (viscous fluid) is formed in the space between the case and the rotary member. Is enclosed. Further, the rotating member is provided with a convex portion that protrudes from the outer peripheral surface and extends in the axial direction and the center of the top portion is partially cut out, and the convex portion has a substantially U-shaped cross section with play in the circumferential direction. The valve member is covered. The valve member has an arc-shaped sliding portion that can slide on the inner peripheral surface of the case, and a pair of side wall portions that project from both ends of the sliding portion toward the rotating member, and a convex portion on one side wall portion. There is a notch that can communicate with the notch of the oil to form an oil flow path. When the opening / closing member rotates in the opening direction, the rotary damper rotates by allowing the flow of oil through the flow path because one side wall portion of the valve member abuts on the convex portion to form a flow path. By lowering the torque, the smooth opening operation (opening operation) of the opening / closing member is not hindered. Further, in the rotary damper, when the opening / closing member rotates in the closing direction, the other side wall portion of the valve member abuts on the convex portion to block the flow path, so that the flow of oil through the flow path is restricted. By increasing the rotational torque, the opening / closing member is prevented from suddenly closing.

Japanese Unexamined Patent Publication No. 2007-327578

Since the weight of the toilet seat and the toilet lid (opening / closing member) provided with the above-mentioned rotary damper differs depending on the type, the rotational torque required for the rotary damper also differs. For example, if the rotary damper for the toilet lid is the same as the rotary damper for the toilet seat, the toilet lid is lighter in weight and has a smaller rotational torque than the toilet seat, so that the closing operation may be significantly slowed down. To prevent such a situation, it is conceivable to set the outer diameter of the rotating member, the notch width of the convex portion, etc. to a size that matches the type (rotational torque) of the opening / closing member provided with the rotating damper. There are multiple types of sizes, and a mold is required for each type, leading to an increase in cost.

An object of the present invention is to generate a required rotational torque while suppressing an increase in cost.

The present invention has taken the following measures to achieve the above-mentioned main object.

The present invention is a rotary damper provided between a fixing member and an opening / closing member that opens / closes by rotating with respect to the fixing member, and is attached to one of the fixing member and the opening / closing member, and a viscous fluid is contained therein. A hollow main body having a fluid chamber to be filled, a shaft attached to the other of the fixing member and the opening / closing member and inserted into the main body and rotatable relative to the main body, and the inside of the main body. A first partition wall extending radially from one surface of the peripheral surface and the outer peripheral surface of the shaft toward the other surface and forming a predetermined gap between the peripheral surface and the other surface, and the other surface. A second partition wall extending radially from one surface toward the one surface and partitioning the fluid chamber into a first fluid chamber and a second fluid chamber together with the first partition wall, and the first partition wall. The valve body is provided with a valve body that is detachably attached to the door, opens the gap by rotating the opening / closing member in the opening direction, and closes the gap by rotating the opening / closing member in the closing direction. It is a gist that a communication groove is provided which allows the viscous fluid to flow by communicating the first fluid chamber and the second fluid chamber when the gap is closed.

The rotary damper of the present invention extends radially from one surface of the inner peripheral surface of the main body and the outer peripheral surface of the shaft toward the other surface, and forms a predetermined gap with the other surface. 1 A valve body is detachably attached to the partition wall, and the valve body opens a gap by rotating the opening / closing member in the opening direction, and closes the gap by rotating the opening / closing member in the closing direction. Further, the valve body is provided with a communication groove that allows the viscous fluid to flow by communicating the first fluid chamber and the second fluid chamber, which are partitioned by the first partition wall and the second partition wall, when the gap is closed. As a result, by changing the size of the communication groove provided in the valve body, such as the groove width and groove depth, the flow rate of the viscous fluid between the first fluid chamber and the second fluid chamber at the time of closure is changed to rotate. The rotational torque of the damper can be adjusted. Further, since such adjustment of the rotational torque can be performed by replacing the valve body, the main body and shaft other than the valve body, the first partition wall, and the second partition wall can have a common configuration. As a result, the required rotational torque can be generated while suppressing the increase in cost.

In the rotary damper of the present invention, the valve body has play in the circumferential direction with respect to the first partition wall in a state where the outer peripheral portion slides on the other surface and the inner peripheral portion is separated from the one surface. It has a contact surface that is attached and can contact the side wall surface in the circumferential direction of the first partition wall, and moves relative to the circumferential direction by rotation of the opening / closing member, so that the contact surface becomes the first partition. The gap is opened by separating from the side wall surface of the wall, and the gap is closed by the contact surface contacting the side wall surface of the first partition wall, and the communication groove is the communication groove. It can be provided on the contact surface. In this way, the rotational torque can be adjusted without complicating the structure of the valve body. Further, the rotational torque can be adjusted without affecting the sliding of the sliding portion.

In the rotary damper of the present invention, the valve body has play in the circumferential direction with respect to the first partition wall in a state where the outer peripheral portion slides on the other surface and the inner peripheral portion is separated from the one surface. It has a contact surface that is attached and can contact the side wall surface in the circumferential direction of the first partition wall, and moves relative to the circumferential direction by rotation of the opening / closing member, so that the contact surface becomes the first partition. The gap is opened by separating from the side wall surface of the wall, and the gap is closed by the contact surface contacting the side wall surface of the first partition wall, and the communication groove is the communication groove. It may be provided on a sliding surface that slides on the other surface. In this way, the rotational torque can be adjusted without complicating the structure of the valve body.

In the rotary damper of the present invention, the valve body may be provided with the communication groove of 1. In this way, the rotational torque can be adjusted by changing the size of one communication groove, so that the cost can be further suppressed as compared with the case where a plurality of communication grooves are provided.

The toilet seat device of the present invention includes a toilet seat, a toilet lid, a first rotary damper provided between the toilet seat as the opening / closing member and the device main body as the fixing member as any of the above-mentioned rotary dampers, and the said. A toilet seat device including a second rotary damper provided between the toilet lid as an opening / closing member and the device main body, wherein the first and second rotary dampers are the main body, the shaft, and the like. The first partition wall and the second partition wall have a common configuration, and the communication groove in the valve body of the first rotary damper is larger than the communication groove in the valve body of the second rotary damper. The gist is that the communication groove is provided in each of the valve bodies so that the flow rate of the viscous fluid is reduced.

The toilet seat device of the present invention includes a first rotary damper provided between the toilet seat and the device body and a second rotary damper provided between the toilet lid and the device body. The first and second rotary dampers have a common configuration of the main body, shaft, first partition wall and second partition wall, and the communication groove in the valve body of the first rotary damper is the valve of the second rotary damper. It is provided so that the flow rate of the viscous fluid is smaller than that of the communication groove in the body. Therefore, the first rotary damper provided on the toilet seat can suppress the flow rate of the viscous fluid at the time of closure and increase the rotational torque as compared with the second rotary damper provided on the toilet lid. Normally, the toilet seat is heavier than the toilet lid, and a large rotational torque is required to prevent a sudden closing operation. Therefore, the rotational torque of each rotary damper can be made appropriate. In this way, the main body, shaft, first partition wall, and second partition wall have a common configuration, and the removable communication grooves of the valve body are different, so that the cost increase of parts can be suppressed and the toilet seat and toilet lid can be connected. The required rotational torque can be appropriately generated for each.

It is a block diagram of the toilet seat device 10 provided with a rotary damper 20 (20A, 20B). It is an external perspective view of a rotary damper 20. It is an exploded perspective view of the rotary damper 20. It is an external perspective view of a damper shaft 30. It is an external perspective view of a valve 40. It is a side view of the damper shaft 30. 6 is a cross-sectional view obtained by adding the cross section of the body 21 to the cross section AA of FIG. It is explanatory drawing which shows the state when the damper shaft 30 rotates in an opening direction. It is explanatory drawing which shows the state when the damper shaft 30 rotates in a closing direction. It is an external perspective view of the valve 140 of another embodiment. It is a top view of the valve 140 of another embodiment.

A mode for carrying out the present invention will be described.

FIG. 1 is a configuration diagram of a toilet seat device 10 including a rotary damper 20 (20A, 20B), FIG. 2 is an external perspective view of the rotary damper 20, and FIG. 3 is an exploded perspective view of the rotary damper 20. 4 is an external perspective view of the damper shaft 30, FIG. 5 is an external perspective view of the valve 40, FIG. 6 is a side view of the damper shaft 30, and FIG. 7 is a cross section of the body 21 in the AA cross section of FIG. It is a cross-sectional view which added the cross section of.

The toilet seat device 10 is installed on the upper surface of a toilet bowl (not shown), and is configured as a washing toilet seat device capable of washing the local part of the user seated on the toilet seat 14 by injecting washing water from a nozzle (not shown). As shown in FIG. 1, the toilet seat device 10 includes a toilet seat device main body 12 installed behind the upper surface of the toilet bowl, a toilet seat 14 and a toilet lid 16 that are openable and closable with respect to the toilet seat device main body 12, and a toilet seat 14. A rotary damper 20A provided between the rotary shaft 15 and the toilet seat device main body 12 and a rotary damper 20B provided between the rotary shaft 17 of the toilet lid 16 and the toilet seat device main body 12 are provided. Since the rotary dampers 20A and 20B have the same configuration except that a part of the constituent member (valve 40) is different as described later, they are referred to as the rotary damper 20 unless otherwise distinguished.

As shown in FIG. 2, the rotary damper 20 has a body 21 fixed in the toilet seat device main body 12, a damper shaft 30 that rotates integrally with the rotary shaft 15 or the rotary shaft 17 (see FIG. 1), and a screw 58. A first cap 50 and a second cap 56 attached to 21 are provided. The direction of rotation of the damper shaft 30 when the toilet seat 14 and the toilet lid 16 are opened is the opening direction, and the direction of rotation of the damper shaft 30 when the toilet seat 14 and the toilet lid 16 are closed is the closing direction.

The damper shaft 30 is a substantially columnar shaft-shaped member, and as shown in FIGS. 2 to 6, the tip portion 31 exposed from the body 21 and connected to the rotating shaft 15 or the rotating shaft 17 (see FIG. 1). And the rear end 32 housed in the body 21 and located on the cap (first cap 50 and second cap 56) side, and located between the tip 31 and the rear end 32 housed in the body 21. It has a central portion 33. Here, as shown in FIG. 7, the space between the inner peripheral surface of the body 21 and the outer peripheral surface of the central portion 33 of the damper shaft 30 is a fluid chamber R filled with a viscous fluid such as oil. Further, the body 21 slidably extends from the inner peripheral surface to the outer peripheral surface of the central portion 33 in the radial direction, and the pair of partition walls 22 for partitioning the fluid chamber R are positioned symmetrically with respect to the axial center. It is provided. A peripheral groove 30a is formed along the circumferential direction at the boundary between the tip portion 31 and the central portion 33 and the boundary between the central portion 33 and the rear end portion 32, and oil leakage is prevented in the peripheral groove 30a. An O-ring 30b is attached to the surface (see FIG. 3).

The rear end portion 32 of the damper shaft 30 is formed at a position where a pair of recessed portions 32a extending in the axial direction on the outer peripheral surface are symmetrical with respect to the axis center. The recessed portion 32a is provided with a round bar-shaped first needle 32b so as to project outward in the radial direction (see FIG. 3). The formation position of the recessed portion 32a is, for example, near the fully open position of the toilet seat 14 and the toilet lid 16 (a position slightly separated from the closed side). The rear end portion 32 provided with the first needle 32b exhibits a self-supporting function of the toilet seat 14 and the toilet lid 16 together with the first cap 50 and the second cap 56.

As shown in FIG. 3, the first cap 50 is formed with an annular portion 51 projecting in an annular shape on the peripheral edge on the body 21 side (inner surface side), and is located in the center of the first cap 50 rather than the rear end portion 32 of the damper shaft 30. A slightly larger cylindrical portion 52 is formed. The end surface of the annular portion 51 seals the side of the fluid chamber R, and an O-ring 51b for preventing oil leakage is attached to the peripheral groove 51a formed on the side wall along the circumferential direction. Further, the first cap 50 is formed at a position where a pair of slits 52a are symmetrical with respect to the axial center on the peripheral wall of the cylindrical portion 52. In the slit 52a, a round bar-shaped second needle 52b projects radially inward from the inner peripheral surface of the cylindrical portion 52 and engages with the first needle 32b of the rear end portion 32 (recessed portion 32a) of the damper shaft 30. It is provided to fit. Each of the second needles 52b is subjected to a radial inward urging force by an annular ring spring 54 arranged on the outer peripheral surface of the cylindrical portion 52, and the first needle 32b is relative to the second needle 52b. It is necessary to push the second needle 52b radially outward against the urging of the ring spring 54 in order to overcome the above. Therefore, the weight of the toilet seat 14 and the toilet lid 16 prevents the first needle 32b from relatively overcoming the second needle 52b, and the toilet seat 14 and the toilet lid 16 are made to stand on their own in the vicinity of the fully open position.

As shown in FIGS. 4 to 7, the central portion 33 of the damper shaft 30 is located at a position where a pair of partition walls 34 extending radially from the outer peripheral surface and partitioning the fluid chamber R are symmetrical with respect to the center of the shaft. A valve 40 is detachably attached to each of the pair of partition walls 34. Note that FIG. 5A shows the valve 40A of the rotary damper 20A provided on the toilet seat 14 (rotary shaft 15), and FIG. 5B shows the rotary damper 20B provided on the toilet lid 16 (rotary shaft 17). The valve 40B is shown.

Each partition wall 34 includes a first protrusion 35 and a second protrusion 36 extending (protruding) to the same height substantially parallel to each other in the radial direction. The partition wall 22 of the body 21 extends to the outer peripheral surface of the central portion 33 and slides on the outer peripheral surface, whereas the partition wall 34 (first protrusion 35 and second protrusion 36) is the body 21. A gap S (see FIG. 7) is formed without reaching the inner peripheral surface. The first protrusion 35 extends from one end to the other end in the axial direction of the central portion 33, and has a stepped portion 35a at the center in the axial direction having a protrusion height lower than that of both ends. The second protrusion 36 projects only at both ends of the central portion 33 in the axial direction, and the central portion is interrupted. Therefore, the partition wall 34 is formed in a substantially U-shaped (concave) cross section in the circumferential direction at both ends in the axial direction of the central portion 33, and is formed in a substantially L-shaped cross section in the center. Further, the central portion 33 has a flat surface 33a having a flat outer peripheral surface at the interrupted portion of the second protrusion 36. The fluid chamber R described above is divided into two chambers by the partition wall 22, and further divided into two chambers by the partition wall 34. As shown in FIG. 7, when the damper shaft 30 rotates in the closing direction (see the arrow in the figure), the rear side in the traveling direction is the first fluid chamber R1 and the front side in the traveling direction is the second fluid with respect to the partition wall 34. Let's call it room R2.

As shown in FIG. 5, the valve 40 slides with a sliding portion 41 which is located on the outer peripheral portion in a state of being attached to the partition wall 34 and has a sliding surface 41a which is slidable on the inner peripheral surface of the body 21. A contact portion 43 that extends radially from the back surface of the portion 41 and is fitted into the partition wall 34 so as to come into contact with the first protrusion 35 and the second protrusion 36, and the second protrusion 35 at the contact portion 43. It is provided with a rib-shaped portion 45 extending in a rib-like shape in the circumferential direction from two locations on the side surface. The valve 40 is formed by the sliding portion 41 and the contact portion 43 in a substantially T-shaped cross section, and both ends of the partition wall 34 having a substantially U-shaped cross section (between the first protrusion 35 and the second protrusion 36). ), The contact portion 43 is fitted with play in the circumferential direction and can move (displace) in the circumferential direction. Further, the valve 40 is positioned in the axial direction by fitting the rib-shaped portion 45 into the interrupted portion (between the protrusions at both ends) of the second protrusion 36.

The back surface of the sliding portion 41 opposite to the sliding surface 41a is supported at both ends of the partition wall 34 (both ends of the first protrusion 35 and the second protrusion 36). Further, the sliding portion 41 is a stepped portion 41b in which the central portion of the first protruding portion 35 facing the stepped portion 35a on the back surface is recessed so as to be thinner than both ends. Therefore, the oil can flow between the stepped portion 35a and the stepped portion 41b.

As shown in FIG. 7, the contact portion 43 extends radially so that the extending end is separated from the flat surface 33a of the central portion 33. Therefore, oil can flow between the inner peripheral portion of the valve 40 (the extending end of the contact portion 43) and the flat surface 33a. The contact portion 43 has a contact surface 43a capable of contacting the side wall surface 35b (see FIG. 4) on the side of the second protrusion 36 in the circumferential direction of the first protrusion 35. As shown in FIG. 5, a communication groove 44 of 1 is formed in the center of the contact surface 43a. The size of the communication groove 44 (44A, 44B) is different between the valve 40A and the valve 40B, and the communication groove 44B of the valve 40B has a larger groove width and groove depth than the communication groove 44A of the valve 40A. There is. Therefore, the flow rate of oil in the communication groove 44B is larger than that in the communication groove 44A. The communication grooves 44A and 44B are not limited to those having different groove widths and groove depths, and may have different groove widths and groove depths, and may have the same size but one (communication). A member that obstructs the flow of oil may be attached in the groove of the groove 44A).

Next, the operation of the rotary damper 20 of the toilet seat device 10 configured in this way will be described. FIG. 8 is an explanatory view showing a state when the damper shaft 30 rotates in the opening direction, and FIG. 9 is an explanatory view showing a state when the damper shaft 30 rotates in the closing direction. In FIGS. 8 and 9, the sliding portion 41 is not shown for the convenience of explaining the position of the contact portion 43 of the valve 40. In addition, the flow of oil is indicated by an arrow. As shown in FIG. 8, the pressure of the oil flowing with the rotation of the damper shaft 30 in the opening direction (pressure from above in FIG. 8) acts on the contact surface 43a of the contact portion 43, and the valve 40 Moves to a position where the contact portion 43 comes into contact with the second protrusion 36, so that the contact surface 43a is separated from the side wall surface 35b of the first protrusion 35. Therefore, the contact between the stepped portion 41b of the valve 40 and the stepped portion 35a of the first protrusion 35, the contact surface 43a of the valve 40 and the side wall surface 35b of the first protrusion 35, and the contact of the valve 40. An oil flow path is formed so as to communicate between the extending end of the contact portion 43 and the flat surface 33a of the central portion 33, and the oil flows smoothly from the first fluid chamber R1 to the second fluid chamber R2. become. As a result, the toilet seat 14 and the toilet lid 16 can be smoothly opened.

On the other hand, as shown in FIG. 9, the pressure of the oil flowing with the rotation of the damper shaft 30 in the closing direction (pressure from the lower part in FIG. 9) is on the side opposite to the contact surface 43a of the contact portion 43. Since the valve 40 acts on the surface and moves to a position where the contact portion 43 abuts on the first protrusion 35, the contact surface 43a abuts on the side wall surface 35b of the first protrusion 35 and the gap S (FIG. 7). See) is blocked. However, since the communication groove 44 is provided on the contact surface 43a, the flow of oil from the second fluid chamber R2 to the first fluid chamber R1 is allowed. Therefore, by changing the size (groove width and groove depth) of the communication groove 44 of the valve 40, the flow rate of oil from the second fluid chamber R2 to the first fluid chamber R1 is changed to rotate the rotary damper 20. The torque can be adjusted. Further, since the valve 40 is detachably attached to the damper shaft 30, the rotation torque can be easily adjusted by replacing the communication groove 44 with one having a different size, and the toilet seat 14 and the toilet lid 16 can be appropriately slowed down. Can be rotated while. Further, in the present embodiment, the communication groove 44A of the rotary damper 20A provided on the toilet seat 14 is smaller in size than the communication groove 44B of the rotary damper 20B provided on the toilet lid 16, so that the rotary damper 20A is smaller than the rotary damper 20B. The amount of oil flowed when the gap S is closed is smaller than that, and the rotational torque generated is larger. Since the toilet seat 14 is heavier than the toilet lid 16 and requires a large rotational torque to suppress a sudden closing operation, it is possible to appropriately generate the rotational torque required for each of the rotary dampers 20A and 20B. can.

In the rotary damper 20 (20A, 20B) of the embodiment described above, a valve 40 is detachably attached to the partition wall 34 of the damper shaft 30, and the valve 40 has the partition wall 34 and the partition wall 22 of the body 21. A communication groove 44 that communicates the first fluid chamber R1 and the second fluid chamber R2, which is partitioned by the above, is provided. As a result, by changing the size of the communication groove 44, the flow rate of oil between the first fluid chamber R1 and the second fluid chamber R2 when the gap S is closed is changed to adjust the rotational torque of the rotary damper 20. be able to. Further, since the valve 40 is removable, such rotation torque can be easily adjusted, and the body 21 and the damper shaft 30 other than the valve 40 can have a common configuration. As a result, the required rotational torque can be generated while suppressing the increase in cost.

Further, the rotary damper 20 abuts the sliding portion 41 on which the valve 40 slides on the inner peripheral surface of the body 21 and the side wall surface (side wall surface 35a of the first protrusion 35) in the circumferential direction of the partition wall 34. A contact portion 43 having a contact surface 43a for closing the gap S is provided, and a communication groove 44 is provided on the contact surface 43a. Therefore, the rotational torque can be adjusted by the valve 40 having a simple structure without affecting the sliding due to the communication groove being caught on the inner peripheral surface of the body 21. Further, since the valve 40 is provided with one communication groove 44, the flow rate can be easily adjusted and the cost can be suppressed as compared with the valve 40 provided with a plurality of communication grooves.

Further, the rotary damper 20A provided on the toilet seat 14 and the rotary damper 20B provided on the toilet lid 16 have a common configuration of the body 21, the partition wall 22, the damper shaft 30, and the partition wall 34, and the valve of the rotary damper 20A. The communication groove 44A of 40A is provided so that the groove width and the groove depth are smaller than the communication groove 44B of the valve 40B of the rotary damper 20B. Therefore, while appropriately generating the rotational torque required for each of the toilet seat 14 and the toilet lid 16, the cost can be suppressed by standardizing the parts other than the valve 40.

In the embodiment, one communication groove is illustrated as the communication groove 44 (44A, 44B), but the present invention is not limited to this, and a plurality of communication grooves may be used, and the sizes of the communication grooves may be different from each other.

In the embodiment, the communication groove 44 is provided on the contact surface 43a of the valve 40, but the communication groove 44 may be provided in addition to the contact surface 43a. FIG. 10 is an external perspective view of the valve 140 of the other embodiment, and FIG. 11 is a plan view of the valve 140 of the other embodiment. As shown in the figure, the valve 140 is provided with two communication grooves 144 along the circumferential direction on the sliding surface 141a of the sliding portion 141. Also in this embodiment, the rotational torque of the rotary damper 20 can be adjusted in the same manner as in the above-described embodiment by changing the size of the communication groove 144 provided on the sliding surface 141a. Although two communication grooves 144 are shown, one may be used, or three or more may be used.

In the embodiment, the valve 40 is detachable from the partition wall 34 of the damper shaft 30, but the present invention is not limited to this, and the valve may be detachable from the partition wall 22 of the body 21. In this case, the sliding surface of the valve may slide on the outer peripheral surface of the damper shaft 30, and the partition wall (top surface) of the damper shaft 30 may slide on the inner peripheral surface of the body 21. ..

In the embodiment, the body 21 of the rotary damper 20 is fixed in the toilet seat device main body 12, and the damper shaft 30 is fixed to the toilet seat 14 (rotary shaft 15) and the toilet lid 16 (rotary shaft 17). Not limited to this, the body 21 may be fixed to the toilet seat 14 (rotary shaft 15) or the toilet lid 16 (rotary shaft 17), and the damper shaft 30 may be fixed to the toilet seat device main body 12.

In the embodiment, a valve 40 having a substantially T-shaped cross section has play on a partition wall 34 having portions (both ends) having a substantially U-shaped cross section due to two protrusions (first protrusion 35 and second protrusion 36). It is assumed that it is fitted, but the present invention is not limited to this, and a partition wall having an I-shaped cross section having one protrusion, such as a partition wall 22, is fitted so that a valve having a substantially U-shaped cross section can be covered with play. May be. In this case, for example, a part of the top of the partition wall is partially cut out, and the contact surface of the inner wall surface of the valve having a substantially U-shaped cross section that comes into contact with the partition wall during closed rotation. , A communication groove may be provided at a position where communication can be made in the notch of the partition wall.

In the embodiment, the toilet seat device 10 is provided between the rotary damper 20A provided between the toilet seat 14 (rotary shaft 15) and the toilet seat device main body 12, and between the toilet lid 16 (rotary shaft 17) and the toilet seat device main body 12. The rotary damper 20B is provided with the rotary damper 20B, and the communication groove 44A of the valve 40A of the rotary damper 20A is smaller in size than the communication groove 44B of the valve 40B of the rotary damper 20B, but the present invention is not limited to this. For example, the valve 40A of the rotary damper 20A is provided with a first predetermined number (for example, one) of communication grooves, and the valve 40B of the rotary damper 20B has a second predetermined number of communication grooves of the same size exceeding the first predetermined number. By providing (for example, two or three), the flow rate of the oil may be different. Alternatively, the valve 40A of the rotary damper 20A may not be provided with a communication groove. Further, the toilet seat device 10 may include only one of the rotary damper 20A and the rotary damper 20B. Further, although the rotary damper 20 is provided with the self-supporting function, it may not be provided with the self-supporting function. Further, it may be applied to a rotary damper provided on an opening / closing member other than the toilet seat 14 and the toilet lid 16.

The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem will be described. In the embodiment, the toilet seat device main body 12 corresponds to the "fixing member", the toilet seat 14 or the toilet lid 16 corresponds to the "opening / closing member", the rotary dampers 20 (20A, 20B) correspond to the "rotary damper", and the body. 21 corresponds to the "main body", the damper shaft 30 corresponds to the "shaft", the partition wall 34 corresponds to the "first partition wall", the partition wall 22 corresponds to the "second partition wall", and the valve 40. Corresponds to the "valve body", and the communication grooves 44 (44A, 44B) correspond to the "communication groove". Further, the contact surface 43a corresponds to the "contact surface", and the sliding surface 41a corresponds to the "sliding surface". Further, the communication groove 144 corresponds to the "communication groove". The toilet seat device 10 corresponds to the "toilet seat device", the rotary damper 20A corresponds to the "first rotary damper", and the rotary damper 20B corresponds to the "second rotary damper".

Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to these embodiments, and can be implemented in various embodiments without departing from the gist of the present invention. Of course.

The present invention can be used in the manufacturing industry of rotary dampers and the like.

10 Toilet seat device, 12 Toilet seat device body, 14 Toilet seat, 15, 17 Rotating shaft, 16 Toilet lid, 20, 20A, 20B Rotating damper, 21 Body, 22 Partition wall, 30 Damper shaft, 30a Circumferential groove, 30b O-ring, 31 Tip, 32 Rear, 32a Recess, 32b 1st Needle, 33 Central, 33a Flat Surface, 34 Partition Wall, 35 1st Protrusion, 35a Step, 35b Side Side, 36 2nd Projection, 40 , 140 valve, 41, 141 sliding part, 41a, 141a sliding surface, 41b stepped part, 43 contact part, 43a contact surface, 44, 44A, 44B, 144 communication groove, 45 rib-shaped part, 50 first Cap, 51 annular part, 51a circumferential groove, 51b O-ring, 52 cylindrical part, 52a slit, 52b second needle, 54 ring spring, 56 second cap, 58 screw, R fluid chamber, R1 first fluid chamber, R2 2nd fluid chamber, S gap.

Claims (1)

The toilet seat, the toilet lid, the device main body, the rotating damper for the toilet seat provided between the toilet seat as the opening / closing member and the device main body as the fixing member, and the toilet lid as the opening / closing member and the said as the fixing member. A toilet seat device including a rotating damper for a toilet lid provided between the device body and the device body .
The rotary damper for the toilet seat and the rotary damper for the toilet lid are respectively.
A hollow body attached to one of the fixing member and the opening / closing member and having a fluid chamber filled with a viscous fluid inside.
A shaft that is attached to the other of the fixing member and the opening / closing member and that is inserted into the main body and can rotate relative to the main body.
With a first partition wall extending radially from one surface of the inner peripheral surface of the main body and the outer peripheral surface of the shaft toward the other surface and forming a predetermined gap between the inner peripheral surface and the other surface. ,
A second partition wall extending radially from the other surface toward the one surface and partitioning the fluid chamber into a first fluid chamber and a second fluid chamber together with the first partition wall.
A valve body that is detachably attached to the first partition wall, opens the gap by rotating the opening / closing member in the opening direction, and closes the gap by rotating the opening / closing member in the closing direction.
With
The valve body is attached to the first partition wall with play in the circumferential direction in a state where the outer peripheral portion slides on the other surface and the inner peripheral portion is separated from the one surface, and the first partition is formed. It has a contact surface that can abut on the side wall surface in the circumferential direction of the wall, and moves relative to the side wall surface in the circumferential direction due to the rotation of the opening / closing member, so that the contact surface separates from the side wall surface of the first partition wall. By doing so, the gap is opened, and the contact surface abuts on the side wall surface of the first partition wall to close the gap. When the gap is closed, the first fluid chamber and the first fluid chamber are closed. One communication groove that communicates with the two fluid chambers and allows the viscous fluid to flow is provided so as to extend along the radial direction to the contact surface .
The communication groove in the valve body of the toilet lid rotary damper is provided so that the groove width and the groove depth are larger than the communication groove in the valve body of the toilet seat rotary damper.
Toilet seat device .

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