JP5113551B2 - Self-supporting holding device - Google Patents

Description

  The present invention relates to a self-supporting holding device that holds a swinging body such as a toilet seat, a toilet lid, or an opening / closing lid of a Western-style toilet in a self-supporting state so as not to fall down.

  The following prior art exists as a self-supporting holding device that stands upright so that a rotating body such as a toilet seat, a toilet lid, or an open / close lid of a western-style toilet is not tilted.

  First, the inner roller is arranged in the groove provided in the damper shaft of the oil damper mechanism, while the outer roller is arranged in the slit provided in the outer frame, and the inner roller and the outer roller are provided with a partially opened portion. A configuration has been proposed in which the urging force of an arcuate plate spring is used to prevent the flank (see Patent Document 1).

In addition, in a configuration similar to the above prior art, a configuration is proposed in which a resin protrusion is used instead of the inner roller, and a resin protrusion having a spring property is used instead of the outer roller (see Patent Document 2).
JP-A-8-182635 JP-A-8-24161

  However, as in the configuration described in Patent Document 1, in the configuration in which the tilting of the rocking body is prevented by the interference between the rollers, when the rollers interfere with each other and get over is prevented, a large force is applied to the roller abruptly. When the vehicle gets over, the outer roller suddenly displaces, causing a click feeling or a clicking sound, resulting in a bad feeling. In addition, since the toilet seat cannot be held at the position where the inner roller and the outer roller overlap, the rollers interfere with each other on the closed side from the fully open position, which causes the rattle to rattle near the fully open position. There is. In addition, when a resin protrusion having a spring property is formed on a resin component as in the configuration described in Patent Document 1, the setting range of the urging force in terms of constraints such as the strength of the resin material used and the bending strength There is a problem that becomes narrow.

  In view of the above problems, an object of the present invention is to prevent a click feeling when applying a load for self-supporting to an oscillating body and to appropriately set an urging force for self-supporting. An object of the present invention is to provide a self-supporting holding device capable of supporting the

  Moreover, the subject of this invention is providing the self-supporting holding | maintenance apparatus which can prevent that the rocking | fluctuation body which is self-supporting generate | occur | produces.

In order to solve the above problems, in the present invention, unless a rotational torque exceeding a predetermined level is applied to a rotating member rotatably supported by a fixed body, the rotating member is prevented from rotating and integrated with the rotating member. A self-supporting holding device that holds a self-supporting rotating oscillating body, wherein a shaft portion formed on one side member of the fixed body and the rotating member has a virtual inscribed circle with respect to an outer peripheral contour line of the shaft portion. A protrusion projecting outward in the radial direction is formed, and the other side member includes a pressing portion that is radially displaceable at a predetermined position in the circumferential direction on the outer peripheral side of the shaft portion, and biases the pressing portion radially inward And an inner peripheral surface of the pressing portion extends in a substantially arc shape centering on the shaft portion over a predetermined angular range in the circumferential direction, and rotational torque applied to the rotating member is The friction between the protrusion and the pressing part When the force is less than or equal to the force, slipping between the protrusion and the pressing portion is prevented, and when the rotational torque applied to the rotating member exceeds the frictional force between the protrusion and the pressing portion, the protrusion and the It is characterized in that it slips through the pressing part.

In the present invention, since only a small frictional force is generated or no frictional force is generated in a section where the pressing portion urged by the urging member and the region where the protruding portion is not formed in the shaft portion, the oscillating body can be easily formed. Can be swung. On the other hand, a large frictional force is generated in a section where the pressing portion biased by the biasing member is in contact with the protruding portion of the shaft portion. For this reason, when the rotational torque applied to the rotating member is equal to or less than the frictional force between the protruding portion and the pressing portion, slipping between the protruding portion and the pressing portion is prevented. For this reason, it is possible to hold a swinging body such as a toilet seat, toilet lid, or opening / closing lid of a Western-style toilet in a self-supporting state so as not to fall. Here, since the inner peripheral surface of the pressing portion extends over a predetermined angular range in the circumferential direction, the protruding portion protrudes inside the pressing portion in a predetermined section after slipping between the protruding portion and the pressing portion starts. Will continue to be held with elasticity. For this reason, since a load for self-supporting can be applied to the oscillator over a predetermined angle range, the protrusion is held inside the pressing portion by the frictional force between the protrusion and the pressing portion. The rising side limit position of the rotation range of the rocking body can be set within the angle range. Further, since the frictional force between the protrusion and the pressing part is used, no force is suddenly applied to the protrusion and the pressing part when the slipping is prevented, and the pressing part is suddenly applied when the slipping occurs. Therefore, there is no click feeling or click sound. Furthermore, in order to prevent slipping between the projecting part and the pressing part, the urging force of the urging member, which is a separate part from the fixed body and the rotating member, is used, so the urging force should be set to any optimum level. There is no restriction that a material suitable for imparting spring property to the other side member must be used.

Further, among the inner circumferential surface of the pressing portion, the portion extending to the circumferential direction is substantially the arcuate shape about the said shaft portion, the portion extending to the circumferential direction While the protrusion and the pressing part are in contact with each other, substantially the same level of urging force can be generated, and a state where the protrusion is held elastically inside the pressing part can be realized over a predetermined angular range. it can.

In the present invention, the outer peripheral surface of the shaft portion is a continuous cam surface having a major axis direction and a minor axis direction, and the protrusion is formed at an end in the major axis direction. Can be adopted.

  In the present invention, in a state where the protrusion is held inside the pressing portion by the frictional force between the protrusion and the pressing portion, bidirectional rotation of the oscillator is prevented. preferable. If comprised in this way, it can prevent that the rocking | fluctuation body generate | occur | produces in the state which performed the rocking | fluctuation body self-supporting.

  In the present invention, the rising-side limit position of the rotation range of the rocking body is set within an angle range in which the protrusion is held inside the pressing portion by the frictional force between the protruding portion and the pressing portion. It is preferable. With this configuration, a load (frictional force) for self-supporting can be applied when the oscillating body reaches the standing-side limit position, so that the oscillating body in the self-supporting state is rattled. Can be prevented.

In this invention, it is preferable that the said press part processes a part of said other side member . About a press part, since either the structure which exhibits urging | biasing force and the structure which does not exhibit urging | biasing force may be sufficient, it is not necessary to form a press part with another components. Therefore, the number of parts can be reduced and the efficiency of the assembly process can be increased.

  In the present invention, the one side member is the rotating member, the other side member is the fixed body, the one side member is the fixed body, and the other side member is the rotating member. Can be adopted. Here, when the one side member is the rotating member and the other side member is the fixed body, a portion of the fixed body located on the outer peripheral side of the shaft portion can be used as a cover or the like. Can be prevented from entering.

  In this invention, it is preferable that the said protrusion is an annular urging member attached to the said fixed body side so that it may pass the outer side of the said press part. If the urging member is an annular urging member, it only needs to be mounted from the axial direction. Therefore, a large force is applied to open the arc-shaped leaf spring, and the trouble of attaching the leaf spring to the outer member from the outside in the radial direction. There is no need to perform such assembly work. Further, since the annular urging member does not require positioning and alignment in the circumferential direction, the assembly operation is easy and the configuration can be simplified from this point of view. Furthermore, if it is an annular urging member, even if any part in the circumferential direction is in contact with the pressing portion, the same urging force is exerted, so there is also an advantage that a stable operation is performed.

  In the present invention, it is preferable that a plurality of the urging members are formed apart from each other in the circumferential direction, and the urging members are annular urging members mounted around the plurality of pressing portions. If comprised in this way, an equal urging | biasing force can be applied with respect to the said several press part.

  In the present invention, the annular biasing member is preferably a coil spring. Since the coil spring is relatively inexpensive, the cost of the self-supporting holding device can be reduced. And if it is a coil spring, an occupation space may be narrow. Further, if the coil spring is used, the deterioration is small even if the diameter is repeatedly enlarged and reduced. Furthermore, in the case of a coil spring, the diameter increases while twisting in the winding direction of the wire, so that the coil spring shifts in the circumferential direction while the diameter is repeatedly enlarged and reduced. For this reason, since the location which contacts a press part in a coil spring moves, since a specific location does not deform | transform, there exists an advantage that urging | biasing force is stable. Furthermore, with a coil spring, the urging force can be adjusted by simply changing the number of turns and the thickness of the wire. In addition, when the wire is wound in multiple layers, even if a part of the wire is cut, the urging force is exerted, so that a certain degree of self-supporting function can be exhibited.

  In the present invention, the biasing member may be a spring member having a notch in a part in the circumferential direction. Examples of the spring member include a C-shaped leaf spring and a clip-shaped spring member.

  In the present invention, a sensor for detecting the rotation of the shaft portion is disposed through a region where the pressing portion is not formed and a region where the urging member is not interposed, on the outer peripheral side of the shaft portion. preferable.

  In the present invention, it is preferable to include a first damper mechanism that applies a braking force to the rotating member when the rotating member rotates in one direction. If comprised in this way, if the direction when a rocking | fluctuation body tries to fall and the rotation direction of the rocking | fluctuation body when a braking force generate | occur | produces in a 1st damper mechanism will correspond, slipping of a protrusion and a press part will pass. Therefore, the urging force required for the urging member that prevents the above can be reduced.

  In the present invention, a rotating member different from the rotating member is rotatably supported with respect to the fixed body, and the other rotating member is positioned adjacent to the biasing member in the axial direction. A second damper mechanism that exerts a braking force when the other rotating member rotates in one direction is configured, and the biasing member is moved from the fixed body in the axial direction by the member configuring the second damper mechanism. Is preferably prevented from falling off. If comprised in this way, since it is not necessary to take the countermeasure against omission of an urging member separately, simplification of composition can be attained.

In the self-supporting holding device according to the present invention, when the rotational torque applied to the rotating member is equal to or less than the frictional force between the protruding portion and the pressing portion, slipping between the protruding portion and the pressing portion is prevented. Oscillators such as toilet seats, toilet lids, and open / close lids can be held in a self-supporting state so as not to fall down. Here, since the inner peripheral surface of the pressing portion extends over a predetermined angular range in the circumferential direction, the protruding portion protrudes inside the pressing portion in a predetermined section after slipping between the protruding portion and the pressing portion starts. Will continue to be held with elasticity. For this reason, since a load for self-supporting can be applied to the oscillator over a predetermined angle range, the protrusion is held inside the pressing portion by the frictional force between the protrusion and the pressing portion. The rising limit position of the swinging range of the rocking body can be set within the angle range, and rattling can be prevented from occurring in the rocking body in the self-standing state. Further, since the frictional force between the protrusion and the pressing part is used, no force is suddenly applied to the protrusion and the pressing part when the slipping is prevented, and the pressing part is suddenly applied when the slipping occurs. Therefore, there is no click feeling or click sound. Furthermore, in order to prevent slipping between the projecting part and the pressing part, the urging force of the urging member, which is a separate part from the fixed body and the rotating member, is used, so the urging force should be set to any optimum level. There is no restriction that a material suitable for imparting spring property to the other side member must be used.

  Embodiments of the present invention will be described with reference to the drawings.

(overall structure)
1A and 1B are an overall view of a Western-style toilet provided with a self-supporting holding device according to the present invention, and a side view showing a state where a toilet seat and a toilet lid swing. FIG. 2 is an exploded perspective view of a self-supporting holding device to which the present invention is applied. FIG. 3 is a longitudinal sectional view when the self-supporting holding device shown in FIG. 2 is cut in parallel to the axial direction.

  The Western-style toilet shown in FIGS. 1A and 1B includes a toilet body 2, a water tank 3, a toilet seat 5, a toilet lid 6, a self-supporting holding device 1, and the like. The toilet seat 5 and the toilet lid 6 are supported by the toilet body 2 via a hinge mechanism, and can be opened and closed with respect to the toilet body 2 so that the opening direction is indicated by an arrow O and the closing direction is indicated by an arrow C. ing. In this embodiment, the toilet seat 5 is opened and closed between the fully open position shown by the solid line in FIG. 1B and the fully closed position shown by the two-dot chain line, and the open / close angle θ is set to around 110 °. In addition, the toilet seat 5 has a standing side limit position set at a position indicated by a point L1 in FIG. 1B so that the toilet seat 5 does not tilt any more.

  In the Western-style toilet constructed as described above, the self-supporting holding device 1 shifts the toilet seat 5 and the toilet lid 6 from the standing state (open position) to the flat state (closed position) (indicated by an arrow C), as will be described later. When the toilet seat 5 is raised to the standing side limit position, the toilet seat 5 is rotated in the closing direction unless a rotational torque in the closing direction of a predetermined level or higher is applied to the toilet seat 5. And a torque limiter function for blocking and holding the toilet seat 5 in a self-supporting state.

  2 and 3, the self-supporting holding device 1 of this embodiment includes a rotating shaft that is mechanically connected to both the toilet lid 6 and the toilet seat 5 shown in FIG. 1, and is a tube made of glass-filled polybutylene terephthalate. A first rotary shaft 12 having a shape, a second rotary shaft 16 that is coaxially inserted into the first rotary shaft 12, and both shaft ends protrude from the first rotary shaft 12, and the first rotary shaft 12 are A first casing 11 that is inserted through the interior, a rotor 17 that is coaxially connected to one shaft end 160 of the second rotating shaft 16, and a second casing 18 in which the rotor 17 is disposed coaxially. Have. In this embodiment, the toilet seat 5 is mechanically connected to the protruding portion of the first rotating shaft 12 from the first casing 11, and the toilet lid 6 is mechanically connected to the protruding portion of the second rotating shaft 16 from the first rotating shaft 12. Connected to

  As will be described in detail later, the first sealed space 20 </ b> A defined between the first casing 11 and the first rotating shaft 12, and the second sealed defined between the second casing 18 and the rotor 17. Each of the spaces 20B includes a first fluid pressure damper mechanism 10A and a second fluid pressure damper mechanism 10B using oil (viscous fluid). The first fluid pressure damper mechanism 10A and the second fluid Each of the pressure damper mechanisms 10B applies a load to the first rotating shaft 12 and the second rotating shaft 16 (rotor 17) when the toilet seat 5 and the toilet lid 6 rotate in the closing direction.

  The flanges of the first casing 11 and the second casing 18 are axially screwed (not shown) with the cover 13 formed with an opening 130 through which the shaft end 160 of the second rotating shaft 16 is passed. The members are connected to each other by welding. Therefore, the first casing 11 is covered with one end face of the common cover 13, and the second casing 18 is covered with the other end face of the common cover 13.

(Configuration of self-supporting mechanism)
In this embodiment, as described below, the first rotating shaft 12 (rotating member) rotatably supported by the fixed body 100 including the first casing 11, the second casing 18, and the cover 13 is closed above a predetermined level. As long as rotational torque in the direction is not applied, a self-supporting holding mechanism 19 that prevents the rotation of the first rotary shaft 12 is configured, and the self-supporting holding mechanism 19 holds the toilet seat 5 in a self-supporting state. The configuration of the self-supporting holding mechanism 19 will be described with reference to FIGS. 2, 3, and 4.

  4A to 4F are cross-sectional views of the shaft end surface of the first rotating shaft 12 constituting the self-supporting holding mechanism, a cross-sectional view of the cover 13, and a cover 13 in the self-supporting holding device 1 shown in FIG. FIG. 4C is a cross-sectional view of a state where the rotary shaft 12 is aligned, a cross-sectional view of a state where the urging member is attached to the cover 13, and a rotation of the first rotary shaft 12 in the direction indicated by the arrow O from the state shown in FIG. It is explanatory drawing which shows a mode, and explanatory drawing which shows a mode that the 1st rotating shaft 12 was further rotated in the direction shown by the arrow O from the state shown in FIG.4 (D). In addition, in FIG. 4, the part which concerns on the same member is attached | subjected the same oblique line other than sectional drawing so that the structure of each member may be understood easily.

  As shown in FIG. 1 (B), in this embodiment, corresponding to the posture of the toilet seat 5, the first rotation shaft 12 has its own weight rotation range L2 in which the toilet seat 5 connected to the first rotation shaft 12 falls due to its own weight. And a self-sustained load application range L3 in which a load is applied to the toilet seat 5 via the first rotating shaft 12 to maintain a self-supporting state (a fully open state shown by a solid line in FIG. 1B). In this embodiment, the self-supporting load application range L3 is realized, and the stand-up side limit position (point L1) of the toilet seat 5 is set in the self-supporting load application range L3. A holding mechanism 19 is configured.

  In this embodiment, when the self-supporting holding mechanism 19 is configured, as shown in FIGS. 2, 3, and 4, the cover 13 and the first of the fixed bodies 100 including the first casing 11, the second casing 18, and the cover 13. One rotation shaft 12 is used.

  More specifically, as shown in FIGS. 2, 3 (A), 4 (A), (B), and (C), the shaft positioned on the cover 13 side on the first rotating shaft 12 (rotating member). The end portion 124 (shaft portion) basically has a cylindrical shape, but on its outer peripheral surface, protrusions 129 projecting radially outward are formed at two point symmetrical positions. That is, the outer peripheral shape of the shaft end portion 124 is an elliptical shape, a spindle shape, or an oval shape, and is a continuous cam surface having a major axis direction and a minor axis direction. The protrusion 129 is defined as a portion protruding outward in the radial direction from the virtual inscribed circle S (see FIG. 4A) with respect to the outer peripheral contour line of the shaft end portion 124. The protrusion 129 may have a shape protruding with a step.

  On the other hand, the cover 13 is formed with two pressing portions 135 extending in a plate shape from the inner bottom portion in the axial direction using a part thereof. The two pressing portions 135 are arranged at point-symmetric positions with the shaft end portion 124 of the first rotating shaft 12 as the center. Here, the pressing portion 135 is formed over a predetermined angular range in the circumferential direction, and the inner peripheral surface of the pressing portion 135 extends in the circumferential direction while curving in a substantially arc shape centering on the shaft end portion 124. is doing. For this reason, when the shaft end portion 124 of the first rotating shaft 12 is disposed inside the cover 13, as shown in FIG. 4C, the two pressing portions 135 are connected to the shaft end portion 124 of the first rotating shaft 12. It faces the outer peripheral surface.

  In this embodiment, an annular urging member 190 is attached to the cover 13 around the two pressing portions 135 as shown in FIG. Here, since the pressing portion 135 is deformable in the radial direction and can be displaced, the pressing portion 135 is urged radially inward by the urging member 190, and the outer peripheral surface of the shaft end portion 124 of the first rotating shaft 12. It touches with elasticity. In this embodiment, as the urging member 190, in this embodiment, a coil spring in which metal wires are wound in multiple layers is used. In addition, when the shaft end portion 124 of the first rotating shaft 12 is disposed inside the cover 13, the two pressing portions 135 may be configured to contact the outer peripheral surface of the shaft end portion 124 of the first rotating shaft 12. Good.

  In addition, as shown in FIG. 2, a window 137 is formed on the cylindrical body portion 136 of the cover 13 on a line orthogonal to the imaginary line connecting the two pressing portions 135, and the window 137 is radially outward. The optical or magnetic sensor 14 that detects the rotation of the shaft end portion 124 of the first rotating shaft 12 through a region where the two pressing portions 135 are not formed and a region where the urging member 190 is not interposed. Is arranged.

(Operation, action and main effect of the self-supporting holding mechanism 19)
FIG. 5 is a graph showing the relationship between the position of the toilet seat 5 in the western toilet shown in FIG. 1, the rotational torque applied to the toilet seat 5, and the frictional force generated by the first rotary shaft 12 and the cover 13. The rotational torque applied to the toilet seat 5 indicates the rotational torque applied to the toilet seat 5 when the toilet seat 5 is rotated in the closing direction by its own weight or the like when the self-supporting holding mechanism 19 is not provided.

  In the self-supporting holding device 1 of this embodiment, as shown in FIG. 1 (B), when the toilet seat 5 is rotated in the closing direction indicated by the arrow C from the open posture in which the toilet seat 5 is inclined toward the water tank 3 (backward), The torque applied to the first rotating shaft 12 changes as shown by a solid line L11 in FIG. On the contrary, in order to rotate the toilet seat 5 in the opening direction indicated by the arrow O from the closed posture in which the toilet seat 5 is flattened on the toilet body 2, it is necessary to apply a rotational torque indicated by a solid line L11 in FIG. Then, it stops at the standing side limit position L2 shown in FIG. 1 (B) by a stopper for the toilet seat 5 itself and a stopper configured in the first fluid pressure damper mechanism 10A described later.

  On the other hand, in the self-supporting holding mechanism 19 described with reference to FIG. 4, as shown in FIGS. 4D and 4F, the pressing portion 195 urged by the urging member 190 and the shaft end portion 124 protrude. In a section in contact with the region where the portion 129 is not formed, only a small frictional force is generated between the pressing portion 195 and the shaft end portion 124, as indicated by a dotted line L12 in FIG. On the other hand, as shown in FIG. 4E, the section where the pressing portion 195 urged by the urging member 190 and the projection 129 of the shaft end portion 124 are in contact with the self-supporting load application region shown in FIG. A large frictional force is generated between the pressing portion 195 and the shaft end portion 124 as indicated by a dotted line L12 in FIG.

  Therefore, as shown by a two-dot chain line in FIG. 1 (B), when the toilet seat 5 in the closed posture lying on the toilet body 2 is rotated in the opening direction, the self-weight before reaching the self-holding load application range L3. In the rotation range L2, as shown in FIG. 4D, the pressing portion 195 urged by the urging member 190 and a region where the projection 129 is not formed at the shaft end portion 124 are in contact with each other. The toilet seat 5 can be rotated in the opening direction with a small force.

  Then, when the toilet seat 5 is further rotated in the opening direction, and the first rotating shaft 12 is rotated in the opening direction, the pressing portion 135 urged by the urging member 190 as shown in FIG. Is in contact with the protruding portion 129 of the shaft end portion 124, and is a section where the pressing portion 135 and the protruding portion 129 of the shaft end portion 124 are in contact with each other (self-supporting load application range L3). In such a section, a large frictional force is generated between the pressing portion 195 and the shaft end portion 124. In this state, unless a large force is applied to the first rotating shaft 12, the toilet seat 5 does not rotate in the opening direction, and the toilet seat 5 does not rotate in the closing direction even if the hand is released from the toilet seat 5.

  Further, when the toilet seat 5 is rotated in the opening direction and the first rotating shaft 12 is rotated in the opening direction, the pressing portion 195 urged by the urging member 190 again as shown in FIG. In this state, only a small frictional force is generated between the pressing portion 135 and the shaft end portion 124.

  However, in this embodiment, when the toilet seat 5 reaches an angular position (standing side limit position L1) that forms about 110 ° with respect to the horizontal posture, as shown in FIG. Since it is set to the final time point within the load application range L3 for self-supporting holding, even when the toilet seat 5 is most rotated in the opening direction, the state shown in FIG. Stop in the state shown in. In this state, the urging force of the urging member 190 is set between the pressing portion 135 and the shaft end portion 124 so that a large frictional force greater than the torque indicated by the solid line L11 in FIG. 5 is generated. . For this reason, unless the force exceeding the frictional force generated between the pressing portion 135 and the shaft end portion 124 is applied to the toilet seat 5, slipping between the protrusion 129 and the pressing portion 135 is prevented. Therefore, the toilet seat 5 is maintained in a standing posture at the standing side limit position L1, and does not rotate in the closing direction carelessly.

  In addition, after the toilet seat 5 is forcibly rotated in the closing direction and the toilet seat 5 reaches the dead weight rotation range L2, the toilet seat 5 automatically rotates in the closing direction due to its own weight.

  As described above, in the self-supporting holding device 1 of this embodiment, when the rotational torque applied to the first rotating shaft 12 is equal to or less than the frictional force between the protrusion 129 and the pressing portion 135, the protrusion 129 and the pressing portion. Since slipping through 135 is prevented, the toilet seat 5 can be held in an independent state so as not to fall down.

  Here, since the inner peripheral surface of the pressing portion 135 extends over a predetermined angular range in the circumferential direction, a predetermined section (a self-supporting load application) is applied after slipping between the protrusion 129 and the pressing portion 135 starts. In the range L3), the state in which the protrusion 129 is held elastically inside the pressing portion 135 continues. In addition, since the portion extending in the circumferential direction on the inner peripheral surface of the pressing portion 135 is substantially arc-shaped, substantially the same level of urging force is generated while the protrusion 129 and the pressing portion 135 are in contact with each other. Thus, the state in which the protrusion 129 is elastically held inside the pressing portion 135 can be realized over a predetermined angle range. For this reason, since a load for self-supporting can be applied to the toilet seat 5 and the first rotating shaft 12 over a predetermined angle range, the rotation range of the toilet seat 5 rises within the self-holding load application range L3. The side limit position L1 can be set. Therefore, since the two-way rotation of the toilet seat 5 is prevented while the protrusion 129 is held inside the pressing portion 135, it is possible to prevent rattling from occurring in the self-supporting toilet seat 5. it can.

  Further, in this embodiment, since the frictional force between the protrusion 129 and the pressing portion 135 is used, no force is suddenly applied to the protrusion 129 and the pressing portion 135 when the slip-through is prevented, and the slip-through is not caused. Since the pressing part 135 is not displaced suddenly when it occurs, a click feeling and a clicking sound are not generated.

  Further, in order to prevent slipping between the projecting portion 129 and the pressing portion 135, the biasing force of the biasing member 190, which is a separate component from the fixed body 100 and the first rotating shaft 12, is used. The cover 13 can be set to an optimum level, and there is no restriction that a material suitable for imparting spring property must be used. Moreover, since the urging force can be adjusted by the urging member 190, the pressing portion 135 may have either a configuration that exerts the urging force or a configuration that does not exhibit the urging force. Therefore, regardless of the material of the cover 13, the pressing portion 135 can be configured by a part of the cover 13, so that the number of parts can be reduced and the assembly process can be highly efficient.

  In this embodiment, since the coil spring (annular urging member) is used as the urging member 190, the urging member 190 may be mounted from the axial direction, so that a large force is applied to open the arc-shaped leaf spring. Thus, it is not necessary to perform a troublesome assembly work of attaching the leaf spring to the outer member from the outside in the radial direction. Further, if the annular biasing member 190 is used, there is no need to perform positioning and alignment in the circumferential direction. From this point of view, the assembly work is easy and the configuration can be simplified. it can. Further, the annular urging member 190 has an advantage of performing a stable operation because the same urging force is exhibited even when any portion in the circumferential direction is in contact with the pressing portion 135.

  Further, since an inexpensive coil spring is used as the urging member 190, the cost of the self-supporting holding device 1 can be reduced. Moreover, if the biasing member 190 is a coil spring, the occupied space may be narrow. Further, if the biasing member 190 is a coil spring, the deterioration is small even if the diameter is repeatedly enlarged and reduced. Further, when the urging member 190 is a coil spring, the diameter increases while twisting in the winding direction of the wire, so that the urging member 190 is shifted in the circumferential direction while the diameter is repeatedly enlarged and reduced. For this reason, since the location which contacts the press part 135 moves in the urging member 190, since a specific location does not deform | transform, there exists an advantage that urging | biasing force is stable. If the urging member 190 is a coil spring, the urging force can be adjusted simply by changing the material of the wire, the number of turns, the thickness, and the like. Further, if the urging member 190 is a coil spring in which wires are wound in multiple layers, even if a part of the urging member 190 is cut, the urging force is exerted, so that a certain degree of self-supporting function can be exhibited.

  In addition, since the annular urging member 190 is mounted around the two pressing portions 135, an equivalent urging force can be applied to the two plurality of pressing portions 135. In addition, since the two pressing portions 135 and the two protrusions 129 are arranged at point-symmetric positions, a biased force is not applied to the second rotating shaft 12. Therefore, uneven wear at the radial bearing portion with respect to the second rotating shaft 12 can be prevented.

  Further, in this embodiment, the shaft end portion 124 of the rotating first rotating shaft 12 is disposed on the inner side, and the fixed cover 13 is disposed on the outer side so as to surround the shaft end portion 124 of the first rotating shaft 12. Intrusion of foreign matter can be prevented.

  Further, since the sensor 14 for detecting the rotation of the shaft end portion 124 of the first rotating shaft 12 is disposed through the region where the pressing portion 135 is not formed and the region where the urging member 19 is not interposed, the first rotating shaft 12 is provided. The rotation of the first rotating shaft 12 can be monitored on the outer side in the radial direction, and at this position, the sensor 14 is disposed compared to the case where the rotation is detected in the axial direction with respect to the first rotating shaft 12. Necessary space may be small. Therefore, the size of the self-supporting holding device 1 can be reduced. Moreover, since the position of the sensor 14 is close to the first rotating shaft 12 to be monitored, the detection sensitivity is high.

  Furthermore, the self-supporting holding device 1 of the present embodiment includes a first fluid pressure damper mechanism 10A (described later with reference to FIG. 6) for the first rotating shaft 12, and the braking force in the first fluid pressure damper mechanism 10A is provided. Is the direction when the toilet seat 5 is about to fall down. For this reason, in the self-supporting holding mechanism 19, the urging force required for the urging member 190 can be reduced.

  Moreover, the self-supporting holding mechanism 19 is configured using the cover 13 of the fixed body 100, and the first fluid pressure damper mechanism 10 </ b> A is configured using the first casing 11 of the fixed body 100. . For this reason, after assembling the self-supporting holding mechanism 19 and the first fluid pressure damper mechanism 10A separately halfway, the cover 13 and the first casing 11 may be connected, so that the assembling work can be performed efficiently.

  Furthermore, a second rotating shaft 16 (another rotating member) different from the first rotating shaft 12 is supported so as to be rotatable with respect to the fixed body 100. For the second rotating shaft 16, refer to FIG. A second fluid pressure damper mechanism 10B described later is configured. In addition, the self-supporting holding mechanism 19 is disposed between the first fluid pressure damper mechanism 10A and the second fluid pressure damper mechanism 10B. For this reason, in the opening 130 where the biasing member 190 is disposed in the cover 13, the biasing member 190 is disposed by a member (an end surface of the rotor 17 described later) constituting the second fluid pressure damper mechanism 10 </ b> A. Part is blocked. For this reason, since the urging member 190 does not come out of the pressing portion 135, it is not necessary to separately take measures to prevent the urging member 190 from being detached, and the configuration can be simplified.

(First fluid pressure damper mechanism)
The first fluid pressure damper mechanism for the toilet seat 5 will be described with reference to FIGS. 2, 3 and 6. 6 (A) to 6 (E) each show the state in the sealed space in the axial direction when the first damper mechanism 10A shown in FIG. Cross-sectional view when cut vertically, cross-sectional view when cut parallel to the axial direction, and cut inside the sealed space perpendicularly to the axial direction when performing an operation to raise a lying toilet seat A cross-sectional view of the check valve, a cross-sectional view of the state in the sealed space when performing the operation to raise the flat toilet seat, and a state in which the check valve is deformed. It is explanatory drawing shown.

  As shown in FIGS. 2 and 3A, in the self-supporting holding device 1 of this embodiment, an O-ring mounting groove 127 for mounting an O-ring 52 from the substantially central position in the axial direction of the first rotating shaft 12 to the tip side. Is formed. Further, an O-ring mounting groove 128 for mounting the O-ring 53 is also formed at a position near the base end from a substantially central position in the axial direction of the first rotating shaft 12. Further, an O-ring mounting groove 131 for mounting the O-ring 54 is also formed on the outer peripheral surface of the cover 13. Accordingly, the O-rings 52, 53, 54 are mounted in the O-ring mounting grooves 127, 128, 131, while a predetermined amount of oil (viscous fluid) is injected into the first casing 11, and then the first If the first rotating shaft 12 is inserted into the casing 11 and then the cover 13 is attached, the first sealed space 20A is defined by the first rotating shaft 12, the first casing 11, and the cover 13, and this The first sealed space 20A is filled with oil.

  2, 3 </ b> A, 6 </ b> A, and 6 </ b> B, a pair of partition walls 112 radially outward from the cylindrical inner wall 111 of the first casing 11 is an outer periphery of the first rotating shaft 12. While projecting to the vicinity of the surface, a pair of wing portions 120 project from the outer peripheral surface of the first rotating shaft 12, and the first sealed space 20 </ b> A is partitioned into a plurality of oil chambers by the partition walls 112 and the wing portions 120. . That is, the two spaces defined by the partition wall 112 are respectively separated by the wing portion 120 from the first oil chamber 21 located on the side of the wing portion 120 in the direction indicated by the arrow CW and the wing portion 120. A compartment is formed in the second oil chamber 22 located on the side in the direction indicated by CCW. Further, the partition wall 112 and the wing portion 120 function as a stopper that defines the rotation region of the first rotation shaft 12. Here, the rotation area of the first rotating shaft 12 is an angle range corresponding to the opening / closing operation of the toilet seat 5 connected thereto.

  In this embodiment, the wing portion 120 is formed with a first engagement protrusion 121 and a second engagement protrusion 122 on both sides of an orifice 125 formed of a recess. Therefore, in the wing portion 120, the first engagement protrusion 121, the orifice 125, and the second engagement protrusion 122 are arranged in this order in the axial direction, and the outer side of the first engagement protrusion 121 in the axial direction and the second engagement protrusion. A cutout having a rectangular cross section is formed on each outer side of the joint protrusion 122 in the axial direction. Further, a check valve 30 that opens and closes the orifice 125 is mounted on the wing portion 120.

  The check valve 30 includes a flat valve portion 35 that covers the orifice 125 on the side of the end surface (one side end surface) indicated by the arrow CCW among the two end surfaces positioned in the circumferential direction of the wing portion 120, The outer edge of the first engagement protrusion 121 from one end of the portion 35 is bent to the end surface (the other end surface) on the direction indicated by the arrow CW of the wing portion 120 and engaged with the first engagement protrusion 121. The first engagement portion 31 having a letter shape and the second engagement projection bent from the other end of the valve portion 35 to the end surface on the direction side indicated by the arrow CW of the wing portion 120 around the outside of the second engagement projection 122 This is a resin molded product provided with a U-shaped second engaging portion 32 engaged with 122.

  Here, the check valve 30 is supported from both sides in the axial direction by the inner bottom of the first casing 11 and the end surface of the cover 13 that closes the opening of the first casing 11.

  In the first fluid pressure damper mechanism 10A configured as described above, an operation when the toilet seat is mechanically coupled to the first rotating shaft 12 will be described.

  In the first fluid pressure damper mechanism 10A, when the toilet seat 5 that has stood up is to be tilted, as shown in FIGS. 6A and 6B, the first casing 11 remains fixed and the first rotation is performed. The shaft 12 rotates in the direction indicated by the arrow CCW. At that time, the outer peripheral surface of the first rotating shaft 12 rotates in the direction indicated by the arrow CCW while sliding on the front end surface of the partition wall 112, and the wing portion 120 rotates in the direction indicated by the arrow CCW while rotating in the second oil chamber. 22 is narrowed. As a result, the oil in the second oil chamber 22 is pressurized and tries to move to the first oil chamber 21, but the check valve 30 is displaced in the direction indicated by the arrow CW by the pressure, and the wing 120 The valve portion 35 is pressed against the end surface located on the side indicated by the arrow CCW. As a result, the orifice 125 is blocked by the valve portion 35, so that the oil in the first oil chamber 21 moves to the second oil chamber 22 from the gap between the cylindrical inner wall 111 of the first casing 11 and the check valve 30. Just do it. Therefore, the toilet seat 5 becomes a high load state due to the flow resistance of the oil at this time, and a braking force is generated, so that the toilet seat 5 can be closed gently.

  On the other hand, when trying to raise the toilet seat 5 that has been flattened, as shown in FIGS. 6 (C) and 6 (D), the first rotating shaft 12 is moved to an arrow while the first casing 11 remains fixed. Rotate in the direction indicated by CW. At this time, the outer peripheral surface of the first rotating shaft 12 rotates in the direction indicated by the arrow CW while sliding on the front end surface of the partition wall 112, and the wing portion 120 rotates in the direction indicated by the arrow CW while rotating in the first oil chamber. 21 is narrowed. As a result, the oil in the first oil chamber 21 tries to move to the second oil chamber 22, and the check valve 30 is displaced in the direction indicated by the arrow CCW by the pressure, and the direction indicated by the arrow CCW of the wing 120. The valve portion 35 is separated from the end face on the side. As a result, the orifice 125 is opened, and the oil in the first oil chamber 21 freely moves from the orifice 125 to the second oil chamber 22. Therefore, since the toilet seat 5 is in a low load state, it can be raised with a small force.

  Further, in the first fluid pressure damper mechanism 10A, when the load is high, the valve portion 35 of the check valve 30 is pressed against the wing portion 120 and is not easily deformed. However, when the load is low, the valve portion 35 is wing portion. Since it is separated from 120, the pressure of the oil is received by the whole valve portion 35, and the check valve 30 is bent as shown in FIG. 6 (E). Nevertheless, in this embodiment, the first and second engaging portions 31 and 32 of the check valve 30 are bent around the outside of the first and second engaging protrusions 122 and 122 of the wing portion 120. The first and second engaging protrusions 122 and 122 are engaged. Therefore, even when the check valve 30 bends in a low load state, such deformation is caused by the first and second engaging portions 31 and 32 being deeper in the first and second engaging protrusions 122 and 122. Since the deformation is in the direction to be engaged, the check valve 30 does not come off the wing 120. Therefore, since it is not necessary to increase the rigidity of the first and second engaging portions 31 and 32, when assembling the self-supporting holding device 1, the check valve 30 is deformed with a small force and attached to the wing portion 120. be able to. Therefore, it is excellent in assemblability. Moreover, since the check valve 30 of this embodiment does not come off even if it bends, it can cope with a high-viscosity viscous fluid used when dealing with a heavy toilet seat.

  In the check valve 30, the first and second engaging portions 31 and 32 are separated from each other on the end face side of the wing portion 120 in the direction indicated by the arrow C, and each has a U-shape. For this reason, the check valve 30 can be bent and the first and second engagement protrusions 122 and 122 can be easily fitted inside the first engagement portion 31 and the second engagement portion 32.

  Furthermore, in this embodiment, the check valve 30 is supported from both sides in the axial direction with the first rotating shaft 12 inserted into the first casing 11, and the first and second engagements of the check valve 30 are performed. Since the portions 31 and 32 are turned outside the first and second engaging protrusions 122 and 122, the check valve 30 is not detached from the wing portion 120 no matter how it bends.

(Second fluid pressure damper mechanism)
A second fluid pressure damper mechanism for the toilet lid 6 will be described with reference to FIGS. 2, 3 and 7. FIG. 7 is a cross-sectional view of the second fluid pressure damper mechanism shown in FIG.

  2, 3, and 7, in the self-supporting holding device 1 of the present embodiment, the second casing 18 is connected to the flange portion of the first casing 11 via the cover 13. A rotor 17 is disposed inside. A long hole-like connecting hole 179 is formed on the end surface of the rotor 17, while the shaft end portion 160 of the second rotating shaft 16 has an oval cross section. For this reason, the rotor 17 is a separate component from the second rotary shaft 16 only by fitting the shaft end portion 160 of the second rotary shaft 16 into the connection hole 179 of the rotor 17. Rotate around the axis.

  Here, an O-ring mounting groove 178 in which the O-ring 55 is mounted is formed in the large-diameter portion 177 of the rotor 17. Therefore, if a predetermined amount of oil (viscous fluid) is injected into the second casing 18 and then the rotor 17 is inserted into the second casing 18, the gap between the rotor 17 and the second casing 18 is increased. The second sealed space 20B is partitioned and the second sealed space 20B is filled with oil.

  Also between the second casing 18 and the rotor 17, as in the case between the first casing 11 and the first rotating shaft 12, a pair of partition walls 182 are formed radially inward from the cylindrical inner wall 181 of the second casing 18. The pair of blade portions 170 protrude from the outer peripheral surface of the rotor 17, and the second sealed space 20 </ b> B is partitioned into a plurality of oil chambers by the partition walls 182 and the blade portions 170. Therefore, as for the rotor 17, the partition area | region 182 and the wing | blade part 170 are used as a stopper, and as a result, the rotation area is prescribed | regulated also for the 2nd rotating shaft 16. Here, the rotation area of the second rotation shaft 16 is an angle range corresponding to the opening / closing operation of the toilet lid 6 connected thereto.

  In addition, an orifice 175 is formed in the wing portion 170, and the check valve 30 similar to the first fluid pressure damper mechanism 10A is attached to the wing portion 170. That is, in the wing portion 170, as in the wing portion 120 of the first fluid pressure damper mechanism 10A, the first engagement protrusion 171, the orifice 175, and the second engagement protrusion 172 are arranged in this order in the axial direction. The valve portion 35 of the stop valve 30 covers the orifice 175 on the end surface (one side end surface) on the direction side indicated by the arrow CCW among the two end surfaces positioned in the circumferential direction of the wing portion 170. Further, the U-shaped first engagement portion 31 of the check valve 30 is bent to the end surface (the other end surface) on the direction side indicated by the arrow CW of the wing portion 170 around the outside of the first engagement protrusion 171. Then, the U-shaped second engaging portion 32 engages with the first engaging protrusion 171 and goes around the outer side of the second engaging protrusion 172 to the end surface of the wing portion 170 on the direction side indicated by the arrow C. It is bent and engaged with the second engaging protrusion 172. In this state, the check valve 30 is supported from both sides in the axial direction by the inner bottom of the second casing 18 and the large-diameter portion 177 of the rotor 17.

  Since the operation of the second fluid pressure damper mechanism 10B configured as described above is the same as that of the first fluid pressure damper mechanism 10A, the description thereof will be omitted. The flow resistance causes a high load state and a braking force is generated, so that it can be closed gently. In addition, when trying to raise the stool lid 6 that has been flattened, the toilet lid 6 is in a low load state, so it can be raised with a small force.

[Other embodiments]
In the said form, although the press part 135 was extended in the circumferential direction among the press parts 135 and the protrusions 129, you may extend both the press part 135 and the protrusions 129 in the circumferential direction.

  In the above embodiment, as shown in FIG. 4E, the standing side limit position L1 of the toilet seat 5 is set in the self-holding load application range L3 where the pressing portion 135 and the protrusion 129 are in contact with each other. ), The standing side limit position L1 of the toilet seat 5 may be set at a position immediately after the slipping between the protrusion 129 and the pressing portion 135 is completed.

  In the above embodiment, the coil spring is used as the urging member 190, but it may be a ring-shaped or cylindrical rubber body. In this case, the urging force can be arbitrarily set by changing the material and thickness. it can. Further, the pressing portion 135 may be urged by a leaf spring attached to the cover 13, and in this case, the urging force can be arbitrarily set by changing the plate thickness, material, and size.

  Here, as the urging member 190, if a spring member having a notch in a circumferential direction, such as a C-shaped leaf spring or a clip-like spring member, is attached to the outside of the pressing portion 35, Since the notch can be used as a region where the biasing member 190 is not interposed, it is convenient to arrange a sensor for detecting the rotation of the shaft end portion 124.

  4C, the pressing portion 135 is not urged by the urging member 190, and no protrusion 129 is formed on the outer peripheral surface of the shaft end portion 124. As shown in FIG. It is configured to contact the portion of the outer peripheral surface of the shaft end portion 124 where the protrusion 129 is not formed by urging by the urging member 190 without contacting the portion. Even in a state where it is not biased, the pressing portion 135 may be in contact with a portion of the outer peripheral surface of the shaft end portion 124 where the protrusion 129 is not formed. On the contrary, even if it is in the state of being urged by the urging member 190, the pressing portion 135 adopts a configuration that does not contact the portion of the outer peripheral surface of the shaft end portion 124 where the protrusion 129 is not formed. Also good.

  In the above embodiment, the inner rotating member (first rotating shaft 12) is arranged and the fixed body (cover 13) is arranged on the outer side, but the rotating member is arranged on the outer side and the fixed body is arranged on the inner side. The present invention may be applied when In this case, a shaft portion having a protrusion on the fixed body side is configured, and a pressing portion biased by the biasing member is configured on the rotating member side.

  In the above embodiment, the fluid pressure damper mechanism is adopted as the damper mechanism. However, when the first rotating shaft 12 and the second rotating shaft 16 are driven by the stepping motor, the damper mechanism is configured using the detent torque of the stepping motor. Also good. In addition, when the first rotating shaft 12 and the second rotating shaft 16 are driven by a stepping motor, the present invention uses a frictional force, so that the stepping motor is compared with the case where the contact between members is used. The required torque can be set small, and the motor can be downsized.

  In the above embodiment, the self-supporting holding mechanism 19 and the first fluid pressure damper mechanism 10A are configured with respect to the first rotating shaft 12, and the self-supporting holding mechanism 19 and the first rotating mechanism (first rotating shaft 12) are arranged on the common rotating member (first rotating shaft 12). Although the fluid pressure damper mechanism 10A is configured, if the self-supporting holding mechanism 19 and the first fluid pressure damper mechanism 10A are provided on different rotating members, and the different rotating members are connected to form the first rotating shaft 12, each is adopted. Can be assembled separately, so that the efficiency of the assembly work can be increased.

  In the above embodiment, the urging member 190 attached to the cover 13 is prevented from coming off by the member (rotor 17) constituting the second fluid pressure damper mechanism 10B, but on the both sides in the axial direction with respect to the urging member 190. A configuration may be employed in which the members constituting the first fluid pressure damper mechanism 10A and the members constituting the second fluid pressure damper mechanism 10B are arranged to prevent the biasing member 190 from coming off in both directions.

  The present invention can be applied not only to the self-supporting holding device 1 for the toilet seat 5 but also to a self-supporting holding device for the toilet lid 6, and for one self-supporting holding device, a self-supporting holding mechanism for the toilet seat 5 and a self-supporting holding mechanism for the toilet lid 6. Both may be provided.

  In addition to the self-holding device for the toilet seat 5 and the toilet lid 6, the present invention may be applied to a self-supporting holding device for preventing the opening / closing lid (swinging body) from falling or tilting.

It is explanatory drawing of the western style toilet provided with the damper mechanism to which this invention was applied. It is an exploded perspective view of a damper mechanism to which the present invention is applied. It is a longitudinal cross-sectional view when the damper mechanism shown in FIG. 2 is cut in parallel to the axial direction, and a longitudinal cross-sectional view of a connecting portion of each member. (A)-(F) are the self-supporting holding devices to which the present invention is applied, respectively, a cross-sectional view of the shaft end surface of the first rotating shaft constituting the self-supporting holding mechanism, a cross-sectional view of the cover, and a position of the first rotating shaft on the cover Cross-sectional view of the combined state, cross-sectional view of the cover with the urging member attached, explanatory view showing the state of rotating the first rotation shaft from the state shown in (C), and the state shown in (D) It is explanatory drawing which shows a mode that the 1 rotating shaft was further rotated. 2 is a graph showing the relationship between the angular position of the toilet seat, the rotational torque applied to the toilet seat, and the frictional force generated between the first rotating shaft and the cover in the western toilet shown in FIG. 1. (A)-(E) are perpendicular | vertical to the axial direction of the state in the sealed space when performing the operation | movement which tries to fall down the toilet seat which stood up in the 1st damper mechanism with respect to the toilet seat shown in FIG. Sectional view when cutting in parallel, sectional view when cutting parallel to the axial direction, and cutting inside the sealed space perpendicularly to the axial direction when performing an action to raise a flat toilet seat Sectional view of the time, cross-sectional view when the state in the sealed space when performing the operation to raise the flat toilet seat is cut in parallel to the axial direction, and the state that the check valve is deformed It is explanatory drawing. It is sectional drawing which shows the structure of the 2nd fluid-pressure damper mechanism with respect to the toilet lid shown in FIG.

Explanation of symbols

1 Self-supporting holding device 2 Toilet bowl body 5 Toilet seat (rocking body)
6 Toilet lid 10A First fluid pressure damper mechanism 10B Second fluid pressure damper mechanism 11 First casing 12 First rotating shaft (rotating member)
13 Cover 14 Sensor 16 Second rotating shaft 17 Rotor 18 Second casing 19 Self-supporting holding mechanism 20A First sealed space 20B Second sealed space 30 Check valve 100 Fixed body 124 Shaft end (shaft portion) of the first rotating shaft
129 Protruding portion 135 of first rotating shaft Pressing portion 190 of cover Energizing member

Claims (13)

A self-supporting holding device that holds the swinging body that rotates integrally with the rotating member by preventing the rotating member from rotating unless a rotational torque exceeding a predetermined level is applied to the rotating member that is rotatably supported by the fixed body. There,
Of the fixed body and the rotating member, a protruding portion that protrudes radially outward from a virtual inscribed circle with respect to the outer peripheral contour of the shaft portion is formed on the shaft portion formed on the one side member, and the other side member is A pressing portion that is radially displaceable at a predetermined position in the circumferential direction on the outer peripheral side of the shaft portion, and a biasing member that biases the pressing portion radially inward,
The inner peripheral surface of the pressing portion extends in a substantially arc shape centering on the shaft portion over a predetermined angular range in the circumferential direction,
When the rotational torque applied to the rotating member is equal to or less than the frictional force between the projecting portion and the pressing portion, slipping between the projecting portion and the pressing portion is prevented, and the rotational torque applied to the rotating member. The self-supporting holding device is characterized in that when the frictional force between the protrusion and the pressing part exceeds a frictional force, the protrusion and the pressing part are slipped through. The outer peripheral surface of the shaft portion is a continuous cam surface having a major axis direction and a minor axis direction,
The self-supporting holding device according to claim 1 , wherein the protrusion is formed at an end in the long axis direction . The bi-directional rotation of the oscillating body is prevented in a state where the protrusion is held inside the pressing portion by a frictional force between the protruding portion and the pressing portion. Item 3. The self-supporting holding device according to Item 1 or 2. The rising-side limit position of the rotation range of the rocking body is set within an angle range in which the protrusion is held inside the pressing portion by a frictional force between the protruding portion and the pressing portion. The self-supporting holding device according to claim 3 , wherein the device is a self-supporting holding device. The self-supporting holding device according to any one of claims 1 to 4, wherein the pressing portion is formed by processing a part of the other side member . The one side member is the rotating member,
The other side member is self holding device according to any one of claims 1 to 5, characterized in that the a fixed member. The self-supporting holding device according to claim 6, wherein the urging member is an annular urging member that is attached to the fixed body side through the outside of the pressing portion . A plurality of the pressing portions are formed apart in the circumferential direction,
The self-supporting holding device according to claim 7, wherein the annular urging member is mounted around the plurality of pressing portions . The self-supporting holding device according to claim 7 or 8 , wherein the annular urging member is a coil spring . The self-supporting holding device according to claim 6 , wherein the biasing member is a spring member having a notch in a part in a circumferential direction . The sensor which detects the rotation of the said shaft part is arrange | positioned through the area | region where the said press part is not formed in the outer peripheral side of the said shaft part, and the area | region where the said biasing member does not interpose. Item 11. The self-supporting holding device according to any one of Items 6 to 10. The self-supporting holding device according to any one of claims 6 to 11, further comprising a first damper mechanism that applies a braking force to the rotating member when the rotating member rotates in one direction . A rotating member different from the rotating member is supported rotatably with respect to the fixed body,
For the another rotating member, a second damper mechanism is configured that exhibits a braking force when the other rotating member rotates in one direction at a position adjacent to the biasing member in the axial direction.
The self-supporting holding device according to claim 12, wherein the urging member is prevented from falling off from the fixed body in the axial direction by a member constituting the second damper mechanism .

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