JP6255736B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device, and more particularly to an opening / closing device preferably used for driving an opening / closing movement of a toilet seat and a toilet lid.

  The toilet seat and toilet lid provided in the toilet bowl may be provided with an opening and closing mechanism that can be opened and closed without touching it directly from the viewpoint of hygiene. As such an opening / closing mechanism, an automatic opening / closing device using a gear, a motor or the like can be cited. For example, Patent Document 1 describes an automatic opening / closing device having a motor in which a worm gear is attached to a rotating shaft, and a reduction gear mechanism including a plurality of members such as a helical gear and a sub worm gear that mesh with the worm gear. Patent Document 2 describes an automatic opening / closing device having a protection device including a planetary gear box including a plurality of double planetary gears, a friction clutch, and the like in order to avoid damage to the gear device due to manual operation. .

JP 2007-319411 A JP 2009-165838 A

  As described above, when an automatic switchgear is configured using a motor or gear, the number of parts increases, and the cost required to construct the switchgear increases. In addition, having a complicated mechanism increases the possibility of failure. For example, if the manual operation in the reverse direction is performed while the opening / closing motion is being driven by the motor, the gear may be damaged. If a protective device such as that disclosed in Patent Document 2 is used, failures due to manual operation can be reduced, but the structure of the automatic switchgear becomes more complex and the manufacturing cost also increases.

  For example, by using a torsion spring, it is conceivable to construct a toilet lid / toilet seat opening / closing device that opens and closes the toilet seat and the toilet lid without touching them directly without using a motor or gear. However, since the rotational force of the torsion spring is always applied in the opening direction, simply providing the torsion spring keeps the toilet seat and toilet lid open when no load is applied. This is not suitable for applications in which the toilet seat or toilet lid is kept closed. For example, if a torsion spring is provided on the support part of the toilet seat, when the toilet lid is closed, the toilet seat is kept closed by the gravity acting on the toilet lid, and when the toilet lid is opened, the toilet seat is automatically flipped up. It is possible to do so. However, it is difficult to open and close the toilet seat independently of the toilet lid or to apply this configuration to the support portion of the toilet lid.

  An object of the present invention is to provide an opening / closing device for driving an opening / closing movement of a member to be opened / closed such as a toilet seat or a toilet lid. It is an object of the present invention to provide an opening / closing device capable of driving an opening operation of an opening / closing member and maintaining the member to be opened / closed without applying a load.

  In order to solve the above-described problem, an opening / closing device according to the present invention includes a housing member having a space inside and a member to be opened and closed, at least a part of which is housed in the housing member, with respect to the housing member. An opening / closing shaft member that opens and closes the member to be opened / closed by rotation, a rotation biasing member that is housed in the housing member and biases the opening / closing shaft member in an opening direction of the member to be opened / closed; The first engagement member formed on the opening / closing shaft member and the first engagement member are engaged in a state where the member to be opened / closed is closed, and the rotation of the opening / closing shaft member with respect to the housing member is restricted. And a second engaging member.

  Here, the first engagement member is formed on a wall surface of a portion of the opening / closing shaft member housed in the housing member, and the second engagement member is formed on an inner wall surface of the housing member. It is good to be.

  The rotation urging member is preferably a torsion spring.

  The opening / closing device includes a spring, and the first engagement member or the second engagement member is attached in a direction in which the first engagement member and the second engagement member are engaged with each other. It is preferable to further include an engaging biasing member that biases.

  Further, one of the first engagement member and the second engagement member is a partially spherical protrusion, the other is a partially spherical recess, and the engagement biasing member is the first engagement member. It is preferable that the coil spring has a shaft disposed in parallel with the direction connecting the first engagement member and the second engagement member.

  The opening / closing device is operated from the outside of the member to be opened / closed to deform the engagement biasing member in the direction opposite to the biasing direction, and the first engagement member and the second engagement member It is preferable to further have an operation member capable of releasing the engagement between the two.

  According to the opening / closing apparatus according to the invention, the member to be opened / closed is urged in the opening direction by the rotation urging member, so that the engagement between the first engagement member and the second engagement member is released. Thus, even if the user does not directly operate the member to be opened / closed by hand, the opening movement of the member to be opened / closed is automatically driven. On the other hand, if the first engagement member and the second engagement member are engaged with each other, these engagements prevent rotational movement of the opening / closing shaft member with respect to the housing member, so that a load due to external force is applied. Without being opened, the member to be opened and closed can be maintained in the closed state. Since the opening movement of the member to be opened / closed is driven only by the rotation biasing member made of a spring, it is not necessary to provide the opening / closing device with a motor and a gear for the purpose of driving the opening movement. In general, compared to a motor or gear, a spring is less likely to fail, and irreversible damage does not occur especially when a manual operation is applied to a member to be opened and closed.

  Here, when the first engagement member is formed on the wall surface of the portion accommodated in the accommodation member of the opening and closing shaft member, and the second engagement member is formed on the inner wall surface of the accommodation member, The entire switchgear can be formed compactly.

  When the rotation biasing member is a torsion spring, the opening / closing shaft member can be biased in the opening direction of the member to be opened / closed with a simple and low-cost configuration.

  The opening / closing device includes a spring, and engages the first engagement member or the second engagement member in a direction in which the first engagement member and the second engagement member are engaged with each other. When the urging member is further provided, the member to be opened / closed is more firmly held in the closed state.

  Further, one of the first engagement member and the second engagement member is a partially spherical protrusion, the other is a partially spherical recess, and the engagement biasing member is formed of the first engagement member and the second engagement member. In the case of a coil spring whose axis is arranged in parallel with the direction in which the engagement members are connected, the coil spring presses the first engagement member against the second engagement member. Thus, the state where the member to be opened and closed is firmly maintained. Further, by compressing the coil spring, the engagement between the first engagement member and the second engagement member is easily released, and the opening operation of the member to be opened / closed is driven.

  The opening / closing device is operated from the outside of the member to be opened / closed to deform the engagement biasing member in the direction opposite to the biasing direction, and the engagement between the first engagement member and the second engagement member. In the case of further having an operation member capable of releasing the engagement, the user can easily release the engagement between the first engagement member and the second engagement member by operating the operation member. Thus, the member to be opened / closed can be opened.

It is a perspective view which shows the state which closed the toilet lid about the toilet seat apparatus provided with the opening / closing apparatus concerning one Embodiment of this invention. It is a perspective view which shows the state which opened the toilet lid about the said toilet seat apparatus. It is AA sectional drawing in FIG. 1 which shows the toilet lid opening / closing apparatus in a closed state, (a) is a general view, (b) is an enlarged view of the part enclosed in the circle in (a). It is AA sectional drawing which shows the toilet lid opening / closing apparatus in an open state. It is sectional drawing which shows one Embodiment of the toilet seat opening / closing apparatus which drives the opening movement of a toilet seat using a remote control signal or a foot switch. It is sectional drawing which shows another embodiment of the toilet seat opening / closing apparatus which drives the opening movement of a toilet seat using a remote control signal or a foot switch.

  Hereinafter, an opening / closing device according to an embodiment of the present invention will be described in detail with reference to the drawings.

  An opening / closing device according to an embodiment of the present invention is preferably used for attaching a toilet seat and a toilet lid so as to be openable and closable in a toilet seat device fixed to a toilet. As shown in FIG. 1, in the toilet seat apparatus 90, the toilet lid 91 and the toilet seat 92 are attached ahead of the main-body part 93 which accommodates components, such as a warm water washing apparatus. The toilet lid 91 is attached to the main body 93 so as to be openable and closable via the toilet lid opening and closing device 1 according to the embodiment of the present invention. Similarly, the toilet seat 92 is attached to the main body 93 so as to be openable and closable via a toilet seat opening and closing device 1 ′ according to an embodiment of the present invention. The main body 93 is fixed to the upper surface of the toilet (not shown), so that the toilet lid 91 and the toilet seat 92 are rotatably attached to the toilet. Taking the toilet lid 91 as an example, a state in which the toilet lid 91 is pivoted in the completely closing direction as shown in FIG. The rotated state is defined as the (full) open state.

  Hereinafter, the configuration of the toilet lid opening / closing device 1 will be described with reference to FIGS. 3 and 4 showing the AA cross section of FIGS. 1 and 2. Although the description is omitted, the toilet seat opening and closing device 1 ′ has the same configuration. 3 shows the state of the toilet lid opening / closing device 1 when the toilet lid 91 is fully closed as shown in FIG. 1, and FIG. 4 is a diagram of the toilet lid 91 when the toilet lid 91 is fully opened as shown in FIG. The state of the lid opening / closing device 1 is shown.

  The toilet lid opening / closing device 1 includes a housing member 2, an opening / closing shaft member 3, a torsion spring (rotation biasing member) 4, a coil spring (engagement biasing member) 5, and an operation member 6. .

  The housing member 2 is formed by joining a first housing member 2a and a second housing member 2b. A housing space 2d having an opening is formed inside the housing member 2, and a torsion spring 4, a coil spring 5, and a part of the opening / closing shaft member 3 are housed in the housing space 2d. Engagement recesses (second engagement members) 8 and 8 are formed as substantially hemispherical recesses on the inner wall surface of the storage member 2 (wall surface of the storage space 2d). In the present embodiment, two engaging recesses 8 are formed at positions facing each other across the central axis C of the opening / closing shaft member 3. The housing member 2 is fixed to the main body 93 of the toilet seat device 90.

  A toilet lid 91 (not shown in FIGS. 3 and 4) is fixed to the opening / closing shaft member 3. A part of the opening / closing shaft member 3 is accommodated in the accommodation space 2 d through the opening of the accommodation space 2 d of the accommodation member 2. The opening / closing shaft member 3 is rotatable around the central axis C with respect to the housing member 2 while being partially housed in the housing space 2d of the housing member 2. Accordingly, the toilet lid 91 is rotatable with respect to the main body 93 of the toilet seat device 90 with the central axis C of the opening / closing shaft member 3 as a rotation axis. Further, the opening / closing shaft member 3 can move back and forth in the direction along the central axis C with respect to the housing member 2.

  A portion of the opening / closing shaft member 3 accommodated in the accommodation space 2d is formed with a torsion spring holding portion 3a, a coil spring accommodating portion 3b, and engagement protrusions (first engagement members) 7 and 7. The torsion spring holding portion 3a has a cylindrical hollow portion having an inner diameter substantially equal to the outer diameter of the wire constituting the torsion spring 4, and a displacement end 4a which is one end of the torsion spring 4 is accommodated in the hollow portion. Yes. Due to the friction between the wall surface of the hollow portion of the torsion spring holding portion 3a and the displacement end 4a of the torsion spring 4, the displacement in the rotational direction of the displacement end 4a and the rotation of the opening / closing shaft member 3 relative to the housing member 2 are interlocked. When one movement occurs, it drives the other movement.

  The coil spring accommodating portion 3b is formed in a hollow shape and disposed on the central axis C, and accommodates the entire coil spring 5 in the hollow portion. A pressing surface 3c is formed in the coil spring accommodating portion 3b, and the coil spring 5 can be pressed and compressed along the central axis C by the pressing surface 3c.

  The engagement protrusions 7 and 7 are formed in a substantially hemispherical protrusion shape complementary to the engagement recesses 8 and 8 formed in the housing member 2, and when the toilet lid 91 is closed as shown in FIG. 1. In the relative arrangement of the housing member 2 and the opening / closing shaft member 3, the housing member 2 and the opening / closing shaft member 3 are arranged at positions facing the engaging recesses 8, 8. Thereby, when the toilet lid 91 is in the closed state, the engagement protrusions 7 and 7 and the engagement recesses 8 and 8 can be engaged with each other.

  Further, the opening / closing shaft member 3 has a hollow operation member housing portion 3d on the opposite side of the coil spring housing portion 3b via the pressing surface 3c. The operation member 6 is inserted into the hollow portion of the operation member housing 3d.

  The torsion spring 4 is housed inside the housing member 2 with its central axis disposed on the central axis C of the opening / closing shaft member 3. An end (not shown) opposite to the displacement end 4 a of the torsion spring 4 is fixed to the housing member 2. As described above, the displacement end 4a is held by the torsion spring holding portion 3a of the opening / closing shaft member 3, and the displacement of the displacement end 4a and the rotation of the opening / closing shaft member 3 with respect to the housing member 2 are interlocked with each other. That is, when the displacement end 4a rotates around the central axis C by the restoring force of the torsion spring 4, the rotation around the central axis C of the opening / closing shaft member 3 (and the toilet lid 91) is driven, while the opening / closing shaft member 3 ( When the toilet lid 91) is rotated around the central axis C by an external force, the displacement end 4a rotates around the central axis C and is displaced. The torsion spring 4 urges the toilet lid 91 in the opening direction via the opening / closing shaft member 3. In the center of the torsion spring 4, a coil spring accommodating portion 3b of the opening / closing shaft member 3 is inserted.

  The central axis of the coil spring 5 is disposed on the central axis C of the opening / closing shaft member 3 and is accommodated in the coil spring accommodating portion 3 b of the opening / closing shaft member 3. The coil spring 5 is positioned by a positioning portion 2e formed to project from the bottom surface 2c of the housing member 2 in addition to the coil spring housing portion 3b. When the opening / closing shaft member 3 is translated in a direction (direction D1) to be inserted deeply into the housing member 2, the coil spring 5 is pressed by the pressing surface 3c of the opening / closing shaft member 3, and the pressing surface 3c and the housing member 2 are moved. The coil spring 5 is compressed between the bottom surface 2c. When the toilet lid 91 is in the fully closed state, the coil spring 5 is compressed more than the natural length, and the opening / closing shaft member 3 is escaped from the housing member 2 via the pressing surface 3c (direction D2). Is energized. Thereby, the engagement protrusions 7 and 7 provided on the opening / closing shaft member 3 are pressed toward the engagement recesses 8 and 8 provided on the housing member 2.

  The operation member 6 includes a columnar shaft portion 6a and a substantially disk-shaped button portion 6b coupled to an end portion of the shaft portion 6a. The shaft portion 6a is inserted into the operation member accommodating portion 3d of the opening / closing shaft member 3 from the side opposite to the button portion 6b. By pushing the button portion 6b in the direction D1, the end surface of the shaft portion 6a opposite to the button portion 6b pushes the pressing surface 3c of the opening / closing shaft member 3, thereby compressing the coil spring 5. At least the button portion 6b of the operation member 6 (and a part of the operation member housing portion 3d of the opening / closing shaft member 3) is provided so as to protrude to the outside of the toilet lid 91, and the user can press the button portion from the outside of the toilet lid 91. 6b can be pressed.

  As shown in FIGS. 1 and 3, when the toilet lid 91 is in the fully closed state, the rotation position of the opening / closing shaft member 3 with respect to the housing member 2 is aligned with the positions of the engagement protrusions 7 and 7 and the engagement recesses 8 and 8. It has become a thing. Then, the coil spring 5 is compressed more than the natural length, and the open / close shaft member 3 is biased in the direction D2, so that the engagement protrusions 7 and 7 are pressed against the engagement recesses 8 and 8, respectively. The mating protrusions 7 and 7 are engaged with the engaging recess 8. The torsion spring 4 is deformed in the winding direction. Due to the restoring force of the deformed torsion spring 4, the opening / closing shaft member 3 and the toilet lid 91 coupled thereto are urged in the opening direction. However, since the engagement protrusions 7 and 7 are engaged with the engagement recesses 8 and 8 and the engagement is firmly held by the coil spring 5, the relative rotation between the opening / closing shaft member 3 and the housing member 2 is performed. The toilet lid 91 is not actually opened and the closed state is maintained.

  From this state, when the button portion 6b of the operating member 6 is pushed in the direction D1, the shaft portion 6a pushes the pressing surface 3c of the opening / closing shaft member 3, further compressing the coil spring 5, and the entire opening / closing shaft member 3 as a housing member. 2 in translation in the direction D1. With the translational movement of the opening / closing shaft member 3, the engaging projections 7, 7 are disengaged from the engaging recesses 8, 8, and the engagement between them is released. Thereby, the restriction | limiting of rotation with respect to the accommodating member 2 of the opening-and-closing shaft member 3 is cancelled | released, and the displacement end 4a of the torsion spring 4 is displaced to the opposite side to the winding direction, ie, the opening direction of the toilet lid 91, with a restoring force. Due to the displacement of the displacement end 4a of the torsion spring 4, the opening / closing shaft member 3 is rotated relative to the housing member 2, and the toilet lid 91 coupled to the opening / closing shaft member 3 is rotated in the opening direction.

  When the displacement end 4a is rotated to a state where the deformation of the torsion spring 4 is eliminated, the movement of the toilet lid 91 in the opening direction is stopped, and the fully opened state shown in FIGS. When the hand or the like that has pushed the button portion 6b is released, the opening / closing shaft member 3 is pushed back in the direction D2 by the restoring force of the coil spring 5, but the toilet lid 91 is closed by the rotation of the opening / closing shaft member 3 with respect to the housing member 2 The positional relationship between the engagement protrusions 7 and 7 and the engagement recesses 8 and 8 has changed since that time, and they are no longer in the engageable rotational position. Therefore, the toilet lid 91 is maintained in a fully opened state. In this state, a gap G equal to the protruding height of the engaging protrusions 7 and 7 is formed between the housing member 2 and the opening / closing shaft member 3, and the coil spring 5 has the gap G as a whole. It is compressed more than the closed state.

  In addition, even if it does not depend on operation of the button part 6b, even if the toilet lid 91 is directly grasped by hand etc. and external force is applied to the toilet lid 91, the external force will displace the displacement end 4a of the torsion spring 4. If it is sufficiently large, the toilet lid 91 in the fully closed state can be opened. Also in this case, when the toilet lid 91 is rotated until the deformation of the torsion spring 4 is eliminated, the toilet lid opening / closing device 1 is in the state shown in FIG.

  In order to close the toilet lid 91 from the fully opened state of FIGS. 2 and 4, it is only necessary to apply a force in a direction to rotate the toilet lid 91 forward by a user's hand or the like. Then, the opening / closing shaft member 3 coupled to the toilet lid 91 rotates, and in conjunction therewith, the displacement end 4a of the torsion spring 4 is displaced in the winding direction. Since the opening / closing shaft member 3 is urged in the direction D2 by the restoring force of the coil spring 5, when the engaging projections 7, 7 and the engaging recesses 8, 8 are rotated by the rotation of the opening / closing shaft member 3, The engagement protrusions 7 and 7 are fitted into the engagement recesses 8 and 8, an engagement state is formed therebetween, and the toilet lid 91 is locked in the fully closed state.

  As described above, in the toilet lid opening / closing apparatus 1, the opening / closing shaft member 3 and the toilet lid 91 coupled thereto are biased in the opening direction by the restoring force of the torsion spring 4. The rotation of the opening / closing shaft member 3 relative to the housing member 2 is restricted by the engagement between the engagement protrusions 7, 7 and the engagement recesses 8, 8. By providing these mechanisms, the toilet lid 91 can be maintained in the fully closed state without applying a load due to external force to the toilet lid 91, such as holding the toilet lid 91 down. Further, the engagement between the engagement recesses 8 and 8 and the engagement protrusions 7 and 7 is released by only one-touch operation of pressing the button portion 6b without directly touching the toilet lid 91, and the toilet lid 91 is Can be opened. The fact that the toilet lid 91 can be opened without touching the toilet lid 91 enhances hygiene in the operation of the toilet lid 91. Although the closing operation is performed manually, the degree of contact with the toilet lid 91 during the manual operation is small compared to the opening operation.

  Further, in the toilet lid opening / closing device 1, the engagement state between the engagement projections 7, 7 and the engagement recesses 8, 8 is firmly held by the action of the coil spring 5, and the toilet lid 91 is fully closed. Can be locked. Maintaining the toilet lid 91 in the fully closed state is important from the viewpoints of improving cleanliness, keeping the heated toilet seat warm, preventing the infant from falling, and the like.

  The opening motion driving mechanism by the one-touch operation as described above and the locking mechanism in the fully closed state are the housing member 2 and the opening / closing shaft member 3 having the engagement structure by the engagement protrusions 7 and 7 and the engagement recesses 8 and 8. And the action of two types of springs, the torsion spring 4 and the coil spring 5. These are members having a simple shape and operating principle, and can be manufactured at a lower cost than the complicated switching device using a motor, a gear or the like, and are less likely to cause a failure. For example, when a motor or gear is used, a malfunction such as breakage of the gear may occur if the reverse operation is performed by an external force during the automatic opening / closing operation. As described above, as long as an external force sufficient to change the displacement end 4a of the torsion spring 4 is applied, the toilet lid 91 can be opened by manual operation without applying an excessive load on the constituent members. Therefore, even if the automatic operation and the manual operation are used in combination, there is a low possibility that the member will be damaged.

  In the toilet seat device 90, the engaging members for restricting the rotation between the opening / closing shaft member 3 and the housing member 2 are engaging protrusions 7 and 7 having a simple substantially hemispherical shape (partial spherical shape) and an engaging recess 8. , 8 and has a simple engagement structure that is engaged by being pressed against each other in a direction parallel to the central axis C. The configuration of the engagement member that restricts the rotation between the opening / closing shaft member 3 and the housing member 2 is not necessarily limited to this, but such an engagement structure by only pressing in one direction is employed. Thus, by simply pressing the opening / closing shaft member 3 in the direction D1 via the operation member 6, the engagement can be released and the opening / closing shaft member 3 can be rotated. In addition, such a simple engagement member and a coil spring 5 as an engagement biasing member that biases the opening / closing shaft member 3 in a direction parallel to the engagement direction cooperate to provide a simple configuration. By the mechanism, a function of deepening the engagement between the engagement members and firmly locking the toilet lid 91 in the fully closed state is realized. The fact that the engagement structure between the opening / closing shaft member 3 and the housing member 2 and the engagement biasing member that deepens the engagement has such a simple configuration further reduces the probability of failure of the toilet lid opening / closing device 1. It also contributes. The more complicated these are, the higher the possibility that a failure occurs in the engaging portion or the like due to the disengagement when the manual opening operation is performed.

  Further, in the toilet lid opening / closing apparatus 1, the housing member 2 and the opening / closing shaft member 3 have a nested structure, and the torsion spring 4, the coil spring 5, and the operation member 6 are disposed on the central axis C thereof. Moreover, the coil spring 5 is disposed so as to penetrate into the torsion spring 4. With these configurations, the toilet lid opening / closing device 1 can be formed compactly and disposed on the rotation axis of the toilet lid 91. In order to assemble such a toilet lid opening / closing device 1, for example, the torsion spring 4, the coil spring 5, and the opening / closing shaft member 3 are arranged in this order on the second housing member 2b, and further the first housing member 2a is covered. Then, after the torsion spring 4 and the coil spring 5 are appropriately deformed, the second housing member 2b may be joined to the first joining member 2a. The joining between the first housing member 2a and the second housing member 2b can be performed by screwing, welding or the like. Although the housing member 2 does not necessarily have to be composed of the first housing member 2a and the second housing member 2b, the toilet lid opening and closing device can be made compact in this way by being composed of a plurality of divided members. 1 can be formed.

  Various modifications can be considered for the toilet lid opening and closing device 1 according to the above embodiment. First, in the toilet lid opening / closing device 1, the coil spring 5 is not necessarily provided. Even if the coil spring 5 is not present, the engagement between the engagement protrusions 7 and 7 and the engagement recesses 8 and 8 is released by pressing the pressing surface 3c with the operation member 6 in the fully closed state of FIG. In terms of the automatic opening operation, the same function as when the coil spring 5 is present can be obtained. On the other hand, in the fully closed state, if the operating member accommodating portion 3d of the opening / closing shaft member 3 is pulled in the direction D2, the engaging protrusions 7 can be fitted into the engaging recesses 8 and 8 and the fully closed state is maintained. it can. However, the absence of the coil spring 5 makes it impossible to obtain a force that constantly presses the engaging protrusions 7 and 7 against the engaging member, and the force to maintain the toilet lid 91 in the fully closed state becomes weak.

  Further, in the toilet lid opening / closing device 1 according to the above embodiment, the rotation restriction between the opening / closing shaft member 3 and the housing member 2 is substantially hemispherical engagement protrusions 7, 7 formed on the opening / closing shaft member 3. Although realized by the substantially hemispherical engagement recesses 8 and 8 formed in the housing member 2 and maintaining the engagement state is assisted by the coil spring 5, the configuration of the engagement member is the same as that of the opening / closing shaft member 3. As long as the rotation between the members 2 can be sufficiently restricted, the invention is not limited to this. As the simplest modification, it is conceivable to provide an engagement recess on the opening / closing shaft member 3 and an engagement protrusion on the housing member 2. Further, as in the case of the toilet lid opening / closing device 1 according to the above embodiment, it becomes difficult to release the engagement only by pressing the push button, but the hook-like engagement structure or the ratchet mechanism It is conceivable to use a magnet or the like.

  Further, in the toilet lid opening / closing device 1 according to the above embodiment, the torsion spring 4 is used as a rotation biasing member for biasing the opening / closing shaft member 3 in the opening direction of the toilet lid 91, and the engagement projections 7, 7 are engaged. The coil spring 5 was used as an engagement urging member for deepening the engagement between the joint recesses 8 and 8. However, any urging member may be used as long as it can urge the opening / closing shaft member 3 in the same direction.

  Finally, in the toilet lid opening / closing device 1 according to the above-described embodiment, the opening operation of the toilet lid 91 is driven by pressing the button portion 6b protruding on the rotation axis (center axis C) of the toilet lid 91. However, any operation member that can release the engagement structure of the opening / closing shaft member 3 and the housing member 2 by operating from the outside of the toilet lid 91 may be provided. As the simplest modification, an appropriate link is used in the form using the substantially hemispherical engagement protrusions 7 and 7 and the engagement recesses 8 and 8 and the coil spring 5 similar to the toilet lid opening and closing device 1 described above. Thus, it is possible to provide the push-type button portion not on the rotation axis of the toilet lid 91 but in another part such as a direction crossing the rotation axis. Further, as described above, when a hook-like engagement structure, a ratchet mechanism, a magnet, or the like is used, an operation member corresponding to each engagement structure such as a rotary operation lever may be used. Furthermore, although it may be necessary to use a motor for a part, if the engagement can be released electrically, the remote control signal and the signal from the foot switch are used to release the engagement, The opening operation of the toilet lid 91 can be automatically driven without even contacting the button portion provided in the vicinity of the toilet lid 91.

  5 and 6 show the configuration of a toilet lid opening / closing device that opens the toilet lid 91 using a remote control signal or a foot switch. The toilet lid opening / closing device 10 shown in FIG. 5 has an arm member 11, and the engaging portion that regulates the rotation of the opening / closing shaft member 13 relative to the housing member 12 is not between the housing member 12 and the opening / closing shaft member 13. It is provided between the arm member 11 and the opening / closing shaft member 13. The arm member 11 is fixed to the main body 93 at a fulcrum 11a provided near the center. The arm member 11 is provided with an engagement protrusion 17, and the opening / closing shaft member 13 is provided with an engagement recess 18 at a portion that engages with the engagement protrusion 17 when the toilet lid 91 is closed. It has been. The arm member 11 is provided with a pressing portion 11b that can be pressed by an electromagnetic valve or a motor 21 on the opposite side of the engaging projection 17 with the fulcrum 11a interposed therebetween. Further, the arm member 11 is formed with a protruding coil spring holding portion 11 c at a portion opposite to the engaging projection 17 on the extension of the shaft connecting the engaging recess 18 and the engaging projection 17. And the coil spring 15 is arranged on the extension of the shaft connecting the engagement recess 18 and the engagement protrusion 17, and the coil spring holding portion 11c is inserted at one end. The other end of the coil spring 15 is fixed to the main body 93.

  The electromagnetic valve or motor 21 is connected to a control unit (microcomputer) 22 and can receive the signal input from the microcomputer 22 and press the pressing unit 11b. The microcomputer 22 is housed in the main body 93 and can be the same as the microcomputer that controls the hot water cleaning device and the like. The microcomputer 22 has a receiving unit that receives a remote control signal from the remote controller 23 or an input unit that receives a signal from the foot switch 24. When the microcomputer 22 receives a signal input from the remote controller 23 or the foot switch 24, the microcomputer 22 outputs a signal to the electromagnetic valve or motor 21, and causes the electromagnetic valve or motor 21 to operate the pressing portion 11b of the arm member 11.

  When the toilet lid 91 is in the closed state, the engagement protrusion 17 of the arm member 11 and the engagement recess 18 of the opening / closing shaft member 13 are engaged, and the coil spring 15 presses the engagement protrusion 17 against the engagement recess 18. This engagement state is maintained by energizing. This restricts the opening / closing shaft member 13 from rotating in the housing member 12 and the toilet lid 91 from opening. When a signal is issued from the remote controller 23 or the foot switch 24, the electromagnetic valve or the motor 21 pushes the pressing portion 11b of the arm member 11, and thereby the engaging protrusion 17 is lifted in a direction to escape from the engaging recess 18. Then, the engagement between the engagement protrusion 17 and the engagement recess 18 is released, the opening / closing shaft member 13 is rotated, and the toilet lid 91 is opened.

  FIG. 6 shows another example of a toilet lid opening / closing device using such a remote control signal or a foot switch. The toilet lid opening / closing device 10 ′ has an engagement biasing torsion spring 15 ′ as an engagement biasing member instead of the coil spring 15. The engagement biasing torsion spring 15 'is fixed coaxially with the fulcrum 11a of the arm member 11, and the pressing portion 11b of the arm member 11 is in a direction opposite to the pressing direction by the electromagnetic valve or the motor 21 (counterclockwise in FIG. 6). Rotating direction). As a result, the engagement protrusion 17 is urged in a direction to be pressed into the engagement recess 18, and the engagement state between the engagement protrusion 17 and the engagement recess 18 is maintained. That is, the opening / closing shaft member 13 is prevented from rotating and the toilet lid 91 is opened. As in the case of the toilet lid opening / closing device 10 of FIG. 5, when a signal is issued from the remote controller 23 or the foot switch 24, the electromagnetic valve or motor 21 presses the pressing portion 11 b of the arm member 11, and the engaging protrusion 17 engages. The toilet lid 91 is opened by being lifted in a direction to escape from the recess 18.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention. The same opening and closing device can be applied to various members that can be pivotally attached to other articles such as a container and a lid of a device, in addition to a toilet seat and a toilet lid.

1, 10, 10 ′ Toilet lid opening / closing device 1 ′ Toilet seat opening / closing device 2, 12 Storage member 3, 13 Opening / closing shaft member 3a Torsion spring holding portion 3b Coil spring accommodating portion 3c Pressing surface 3d Operation member accommodating portion 4, 14 Torsion spring 4a Displacement ends 5 and 15 Coil spring 6 Operation member 6a Shaft portion 6b Button portions 7 and 17 Engagement protrusions 8 and 18 Engagement recess 11 Arm portion 11a Support point 11b Pressing portion 15 'Engagement torsion spring 90 Toilet seat device 91 Stool Lid 92 Toilet seat 93 Body

Claims (6)

A housing member having a space inside;
An opening / closing shaft member for fixing the opening / closing member, at least a part of the opening / closing member being accommodated in the accommodation member, and opening / closing the opening / closing member by rotating with respect to the accommodation member;
A rotation urging member comprising a spring, accommodated in the accommodating member, and urging the open / close shaft member in an opening direction of the open / close member;
An arm member;
A first engagement member formed on the arm member ;
Wherein in a state where the closing member is closed engaged with the first engagement member, have a, a second engagement member that regulates the rotation of the opening and closing shaft member relative to the housing member,
The arm member includes a fulcrum and a pressing portion that is provided on the opposite side of the first engagement member across the fulcrum and can be pressed by an electromagnetic valve or a motor.
An opening / closing device in which the engagement between the first engagement member and the second engagement member is released when the pressing portion is pushed by the electromagnetic valve or the motor . An engaging portion constituted by the first engaging member and the second engaging member is provided between the arm member and the opening / closing shaft member,
The opening / closing apparatus according to claim 1, wherein the second engagement member is formed on the opening / closing shaft member .   The opening / closing apparatus according to claim 1, wherein the rotation urging member is a torsion spring.   An engagement biasing member comprising a spring and biasing the first engagement member or the second engagement member in a direction in which the first engagement member and the second engagement member are engaged with each other. The switchgear according to any one of claims 1 to 3, further comprising: One of the first engagement member and the second engagement member is a partially spherical protrusion, and the other is a partially spherical recess.
The arm member has a projecting coil spring holding portion at a site opposite to the first engagement member on an extension of a shaft connecting the second engagement member and the first engagement member. And
The engagement biasing member is a coil spring, the shaft is disposed on an extension of the shaft connecting the second engagement member and the first engagement member, and the coil spring holding portion is inserted at one end. The opening / closing apparatus according to claim 4, wherein the other end is fixed to a main body portion to which the opening / closing member is rotatably attached . One of the first engagement member and the second engagement member is a partially spherical protrusion, and the other is a partially spherical recess.
The engagement biasing member is a torsion spring, is fixed coaxially with the fulcrum of the arm member, and biases the pressing portion of the arm member in a direction opposite to the pressing direction by the electromagnetic valve or the motor. switchgear according to claim 4, characterized in that is.

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