JP6604915B2 - Handrail for bathtub - Google Patents

Description

  The present invention relates to a handrail for a bathtub provided with a fixed frame disposed so as to contact the side surface and the upper surface of the bathtub side wall, and a movable frame attached to the fixed frame so as to be retractable to the fixed frame side. By making the movable frame into a U-shaped downward, the moving device for pulling the movable frame is attached to the fixed frame and the vertical part of the movable frame that are arranged opposite to the side surface of the bathtub side wall. It is related with the handrail for bathtubs.

  For this reason, although the handrail for bathtubs of this invention is a type which draws in a movable frame to the fixed frame side, the thickness of the fixed frame and movable frame of the part arrange | positioned at the upper surface of a bathtub side wall is made very thin. In addition, even when the movable frame is retracted, there is a feature that there is no positional displacement or frictional force due to the positional displacement between the fixed frame and the upper surface of the bathtub side wall.

  Conventionally, a handrail for a bathtub that can be detachably attached by clamping the side wall of the bathtub from the washing area side and the bathtub side so that the elderly can easily support the body when entering and leaving the bathtub is provided. Has been. Since the handrail for the bathtub is used by a handicapped user to deposit his / her own weight, it must be attached to the desired position on the side wall of the bathtub as accurately and firmly as possible.

  For example, handrails for bathtubs described in JP 2010-246691 A (Patent Document 1) and WO 2013-157078 International Publication (Patent Document 2) include a pressing plate that is pushed into the bathtub side wall, and the bathtub The main frame is directly placed on the side wall, and the movable frame is mounted on the main frame. And the handrail for bathtubs described in Patent Documents 1 and 2 is such that the main body frame is directly placed on the bathtub side wall so that the bathtub side wall is sandwiched between the main body frame and the movable frame, and then the pressing plate attached to the main body frame is used. By pushing into the bathtub side wall, it is firmly attached to the bathtub side wall.

  In the handrail for bathtubs described in Patent Documents 1 and 2, when the pressing plate brought into contact with the bathtub side wall is pushed in, the main body frame placed directly on the bathtub side wall is relative to the bathtub side wall via the pressing plate. Therefore, a frictional force is generated between the main body frame and the upper surface of the bathtub side wall. For this reason, in the handrail for bathtubs described in Patent Documents 1 and 2, the main body frame cannot move smoothly even if the pressing plate is pushed in, and due to insufficient movement, the main body frame and the upper surface of the bathtub side wall Since frictional force (residual stress) is accumulated between them, the handrail for the bathtub and the side wall of the bathtub are deformed, or the frictional force (residual stress) is released unintentionally, so that the body frame and the top surface of the bathtub side wall There has been an essential problem of making the state of attachment to the bathtub side wall unstable by causing further positional deviation.

  Moreover, in the handrail for bathtubs described in Patent Documents 1 and 2, when the pressing plate is pushed in, the handrail (particularly the upper grip) attached to the main body frame is also relatively separated from the side wall of the bathtub. There is also a problem that the main body frame cannot be directly attached to a desired position temporarily placed on the side wall of the bathtub.

  On the other hand, as a handrail for a bathtub that solves the above problems, a pressing plate that pushes in the side wall of the bathtub is provided on the side of the movable frame attached to the main body frame, so that the main body frame placed directly on the bathtub side wall is provided. There are known handrails for bathtubs described in Japanese Patent Application Laid-Open No. 2000-189339 (Patent Document 3) and Japanese Patent Application Laid-Open No. 2004-261327 (Patent Document 4) that prevent positional deviation. In addition, the movable frame arranged on the main body frame is pulled toward the main body frame until it contacts the bathtub side wall, so that the main body frame placed directly on the bathtub side wall is not misaligned. The handrails for bathtubs described in Japanese Utility Model Laid-Open No. 3-60590 (Patent Document 5) and Japanese Patent Application Laid-Open No. 2002-143017 (Patent Document 6) are also known.

  However, in the case of the handrail for bathtubs described in Patent Documents 3 and 4, since the moving device for reciprocating the pressing plate attached to the movable frame such as the bolt shaft and the handle knob protrudes toward the inside of the bathtub, There is a problem that it is dangerous and disturbing to the user of the bathtub handrail.

  Moreover, in the case of the handrail for bathtubs described in Patent Documents 5 and 6, a moving device for pulling the movable frame to the main body frame side such as a bolt shaft is bulkyly arranged on the upper surface of the bathtub side wall. In the state where the handrail for the bathtub is attached, there is a problem that the bathtub cannot be covered, or a large gap is generated even if the lid is covered, and the bath temperature is lowered.

JP 2010-246691 A WO2013-157078 International Publication JP 2000-189339 A JP 2004-261327 A Japanese Utility Model Publication No. 3-60590 JP 2002-143017 A

  Therefore, the present invention provides a handrail for a bathtub that is detachably attached to a bathtub side wall, and is placed directly on the upper surface of the bathtub side wall, which is generated by clamping the bathtub side wall, in order to stabilize the mounting state. Displacement between the frame and the frictional force (residual stress) is prevented, and even when mounted on the bathtub side wall, it is placed on the top surface of the bathtub side wall so as not to obstruct the bathtub. An object of the present invention is to provide a handrail for a bathtub provided with a compact clamp structure in which a frame and the like are thinned. In addition, another object of the present invention is to provide a bathtub handrail in which the position of the handrail (particularly the upper grip) attached to the body frame relative to the bathtub side wall and the position of the handle knob are not changed before and after the attachment.

  In order to achieve the above object, the present inventors have a fixed frame directly placed on the upper surface of the bathtub side wall, a shape of a movable frame attached on the fixed frame, a connection structure between the fixed frame and the movable frame, We have intensively studied the structure of the moving device for changing the relative position of the movable frame with respect to the fixed frame and the mounting position thereof. As a result, the present inventors have provided a fixed frame in which the handrail for the bathtub is disposed so as to contact the side surface and the upper surface of the bathtub side wall, and a movable frame attached to the fixed frame so as to be retractable on the fixed frame side. The movable frame is formed in a U-shaped downward shape so that the moving device for drawing the movable frame can be attached to the fixed frame arranged on the side surface of the bathtub side wall and the vertical portion of the movable frame. It has been found that this is most effective, and the present invention has been completed.

  That is, according to the present invention, the retracting portion disposed so as to face one side surface of the bathtub side wall, the retracting operation portion disposed so as to face the retracting portion, the retracting portion, and the retracting operation portion. And a horizontal portion disposed so as to face the upper surface of the bathtub side wall, and the other side opposite to one side surface of the bathtub side wall. And a moving frame connected to the pulling operation unit and moving the pulling operation unit close to or away from the vertical unit. The handrail for bathtubs characterized by this is provided.

  The handrail for bathtubs according to the present invention includes a fixed frame that is directly placed so as to mainly contact one side surface and the upper surface of the bathtub side wall, and a retracting portion that is disposed so as to face the other side surface of the bathtub side wall. And a movable frame movably attached to the fixed frame, and a vertical part of the fixed frame and the movable frame (located on the side surface of the bathtub side wall) for connecting the movable frame to the fixed frame so as to move forward and backward And a moving device attached to the portion).

  Further, the fixed frame includes a horizontal portion that contacts the upper surface of the bathtub side wall, and a vertical portion that connects to the horizontal portion and contacts the side surface of the bathtub side wall, and has a substantially downward L-shape when viewed from the side. Have. On the other hand, a movable frame is provided with the drawing-in part arrange | positioned at the side surface of a bathtub side wall, the drawing-in operation part arrange | positioned so as to oppose a drawing-in part, and the connection part which connects a drawing-in part and a drawing-in operation part. And has a substantially U-shaped shape in a side view.

  For this reason, in the handrail for bathtubs of the present invention, the fixed frame is directly placed on the upper surface of the bathtub side wall, and the movable frame only advances and retreats with respect to the fixed frame directly placed on the upper surface of the bathtub side wall. The fixed frame can be firmly attached in a stable state without causing a positional shift or a frictional force (residual stress) between the upper surface of the bathtub side wall by the pulling operation of the movable frame. Moreover, in the handrail for bathtubs of this invention, even if it draws in the drawing-in part of a movable frame to a bathtub side wall after putting a fixed frame near a bathtub side wall, it is a handrail attached to the fixed frame and this fixed frame ( In particular, there is no problem that the upper grip) moves away from the bathtub side wall, and as a result, the upper grip has a structure that is not easily tilted toward the washing area.

  In the handrail for bathtub of the present invention, the clamp of the bathtub side wall by pulling the pull-in part of the movable frame through the connecting part is a pull-in operation arranged on the opposite side of the pull-in part across the bathtub side wall by the moving device. This is done by separating the part from the vertical part of the fixed frame. In other words, the movable frame moving device moves the retracting operation portion apart from the vertical portion, thereby bringing the retracting portion closer to the vertical portion via the connecting portion, and the retracting operation portion to the vertical portion. By being close to each other, the retracting portion functions to be separated from the vertical portion via the connecting portion.

  For this reason, in this invention, it becomes possible to arrange | position the moving apparatus for retracting a movable frame to the side surface of a bathtub side wall via a retracting operation part, and it moves to the horizontal part and connection part which are arrange | positioned on the upper surface of a bathtub side wall. Since it is not necessary to dispose the device, it is disposed on the upper surface of the bathtub side wall although it is a handrail for a bathtub that pulls the movable frame as described in Patent Documents 5 and 6 to the fixed frame side. The structure of the horizontal part and the connecting part can be simplified and the thickness can be made extremely thin. Therefore, even when the handrail for bathtub of the present invention is attached to the bathtub side wall, the movable frame or the fixed frame does not cause a gap or the like such that the bath temperature decreases between the bathtub side wall and the lid, It enables attachment of the lid having a high sealing property to the bathtub.

  In the moving device of the present invention, when the retracting operation portion of the movable frame is brought close to the vertical portion of the fixed frame, even if the retracting operation portion is separated from the vertical portion by pulling it, or the vertical portion is retracted. It may be separated by being pushed from the portion, and it is preferable that the separated state can be maintained. Further, the moving device is not necessarily connected to the vertical portion of the fixed frame as long as it is connected to at least the retracting operation portion of the movable frame.

  For example, when the moving device is composed of a bolt shaft and a nut, if the nut is attached at least to the retracting operation portion of the movable frame, the bolt shaft can be moved even if the tip portion of the bolt shaft is not connected to the vertical portion. The vertical part can be moved away from the retracting operation part by pushing the tip part into the vertical part and the bolt shaft is retracted, and the tension state between the retracting operation part and the vertical part by the bolt shaft ( This is because the tension state is released and the vertical portion returns (closes) to the retracting operation portion side.

  For example, when the moving device is constituted by an eccentric cam provided with a rotation lever, the eccentric cam may not be connected to the vertical portion as long as the eccentric cam is attached at least to the retracting operation portion of the movable frame. By rotating the eccentric cam and pressing the thick part against the vertical part, the vertical part can be separated from the retracting operation part, and the eccentric cam can be rotated and returned so that the thin part contacts the vertical part. For example, the tension state (stretching state) between the retracting operation portion and the vertical portion due to the eccentric cam is released, and the vertical portion returns (closes) to the retracting operation portion side.

  In the handrail for bathtubs of the present invention, when the connecting portion is disposed on the upper side of the horizontal portion, the movable frame may be attached to the fixed frame so as to be able to swing. When the movable frame is attached to the fixed frame so as to be able to swing, without attaching the pressure plate to the movable frame so as to be able to swing, or without attaching the contact plate to the fixed frame so as to be able to swing, The handrail body for bathtub can be firmly attached to the bathtub side wall by curving the clamp portion to follow the bathtub side wall whose thickness is not constant.

  In addition, if the movable frame can be swung, the above-described drawing pressure plate and contact plate can be omitted, or even if a drawing pressure plate or contact plate is provided, the swing angle can be reduced. There is an advantage that the size of the frame or the size of the handrail body for the bathtub can be made compact.

  The structure for attaching the movable frame to the fixed frame so as to be able to swing is not particularly limited. For example, a slit is provided in the connecting portion of the movable frame or the horizontal portion of the fixed frame, and the connecting portion using the slit is provided. And the horizontal portion can be realized by screwing. For example, when the moving device is composed of a bolt shaft and a nut, the nut is attached to the retracting operation portion of the movable frame so as to be able to swing, and / or the tip of the bolt shaft is swung to the vertical portion of the fixed frame. It can be realized by mounting as possible.

  Especially when the moving device is connected not only to the retracting operation unit but also to the vertical part, such as attaching the nut to the retracting operation unit of the movable frame and attaching the tip of the bolt shaft to the vertical part of the fixed frame, Since it is connected to the fixed frame via the cable, it will not be carelessly detached from the fixed frame, making it convenient to carry.

  The moving device used in the present invention preferably includes a nut connected to the retracting operation unit, a bolt shaft screwed with the nut, and a handle knob for rotating the nut or the bolt shaft. In this case, the bolt shaft may be screwed back and forth by rotating the nut, or may be screwed back and forth by rotating the bolt shaft itself. The bolt shaft may be connected to the vertical portion so as to be able to swing.

  When the moving device is constituted by a nut and a bolt shaft, the retracting operation portion can be easily moved close to or away from the vertical portion by screwing and retreating of the bolt shaft, and the state thereof can be reliably maintained. it can. Further, when the bolt shaft is connected to the vertical portion so as to be able to swing, the movable frame can be fixed to the fixed frame so as to be swingable.

  As described above, when the moving device used in the present invention is constituted by a nut and a bolt shaft, the nut is rotatably connected to the retracting operation portion, and the bolt shaft is non-rotatably connected to the vertical portion. be able to. In the case of this aspect, the bolt shaft is screwed back and forth by rotating the nut attached to the retracting operation portion. Therefore, the position of the handle knob for rotating the nut is unchanged with respect to the retracting operation portion. Dangerous parts protruding from the handrail can be reduced.

  For this reason, it is preferable that the handle knob has a storage chamber for storing the bolt shaft retracted by rotating the nut inside the handle knob. In this case, the handle knob is connected to the user from the bolt shaft. It also functions as a protective cover that protects the camera.

  As described above, when the moving device used in the present invention is to rotate the bolt shaft by rotating the nut, the rotational force is transmitted from the handle knob to the nut when less than a predetermined force, and Above the force, it is preferable to provide torque transmission / cut-off means for cutting off the transmission of torque from the handle knob to the nut.

  If the moving device is equipped with torque transmission / interruption means, even if the user turns the handle knob and pulls the pull-in part strongly toward the vertical part, it does not damage the bathtub side wall. The bathtub handrail of the present invention can be attached to the bathtub side wall with a clamping force.

  When the moving device used in the present invention is constituted by a nut and a bolt shaft, as another aspect, the bolt shaft is rotatably connected to the vertical portion, and the nut is non-rotatably connected to the retracting operation portion. be able to. In the case of this aspect, since the bolt shaft to be screwed back and forth is directly rotated by the handle knob, the structure of the moving device can be greatly simplified, and the reliability of the moving device can be improved.

  As described above, when the moving device used in the present invention is such that the bolt shaft is screwed back and forth by rotating the bolt shaft itself, the rotational force is transmitted from the handle knob to the bolt shaft if less than a predetermined force. Further, it is preferable that a torque transmission means for interrupting transmission of turning force from the handle knob to the bolt shaft is provided at a predetermined force or more.

  If the moving device is equipped with torque transmission / interruption means, even if the user turns the handle knob and pulls the pull-in part strongly toward the vertical part, it does not damage the bathtub side wall. The bathtub handrail of the present invention can be attached to the bathtub side wall with a clamping force.

  Another embodiment of the moving device different from the nut and bolt shaft is an eccentric cam that is rotatably supported by the retracting operation portion, and the distance between the retracting operation portion and the vertical portion is determined by the rotation. An eccentric cam to be changed and a rotation lever to rotate the eccentric cam can be included. In order to enable adjustment of the maximum eccentric amount of the eccentric cam, for example, a spacer having a tapered surface whose thickness changes continuously between the contact surface of the eccentric cam and the vertical portion of the fixed frame is mounted. You can do it.

  When the moving device is constituted by an eccentric cam, the retracting operation portion can be moved closer to or away from the vertical portion by one-touch operation by rotating the eccentric cam, and the state can be reliably maintained. . In addition, if the eccentric cam is attached to the retracting operation portion, the contact surface of the eccentric cam does not need to be connected to the vertical portion, so the structure of the moving device can be greatly simplified, and the reliability of the moving device can be improved. In addition to being able to improve, it is possible to substantially eliminate the risk of protruding from the handrail for bathtubs as compared with the nut and bolt shaft system.

  In the handrail for bathtubs of this invention, it is preferable that the separation distance between the drawing-in part and drawing-in operation part in a movable frame is adjustable. The adjustment of the separation distance between the retracting portion and the retracting operation portion includes, for example, a movable frame, a first downward L-shaped frame including the retracting portion and a part of the connecting portion, and a first portion including the retracting operation portion and a portion of the connecting portion. It can be realized by adjusting the connecting position of the connecting portions of the first and second downward L-shaped frames. For example, it can also be realized by making the attachment position of the retracting part and / or the retracting operation part variable with respect to the connecting part.

  If the separation distance between the drawing-in part and the drawing-in operation part is adjustable, the movable frame is attached to the bathtub side wall by adjusting the separation distance between the drawing-in part and the drawing-in operation part in advance to the thickness of the bathtub side wall. The minimum width required for clamping can be kept. As a result, it is possible to reduce the clamping operation by the moving device and to shorten the attachment time, and it is also possible to minimize the protruding portion from the bathtub side wall of the bathtub handrail after being attached.

  In the handrail for bathtub of the present invention, the bathtub side wall may be directly clamped by the pull-in part and the vertical part, but the pulling pressure plate is provided in the pull-in part and abuts against one side surface of the bathtub side wall, and / or You may clamp a bathtub side wall through the contact plate which is provided in the vertical part and contact | abuts the other side surface of a bathtub side wall.

  The suction plate and the contact plate can be formed of a flat plate made of resin or metal, a hard / soft rubber, or a combination thereof to increase the frictional force with the bathtub side wall, and the drawing portion and / or the vertical portion. It can also be configured as an integral part, or it can be configured as a separate part separated from the retracting part and / or the vertical part. In addition, when the drawing pressure plate or the contact plate is configured as a separate part from the drawing-in portion and / or the vertical portion, the drawing pressure plate or the contact plate is provided so as to smoothly follow the curved or inclined bathtub side wall. You may attach so that it can swing with respect to a drawing-in part and / or a vertical part.

  When the drawing part is provided with a drawing pressure plate and the vertical part is provided with a contact plate, the pressure action point of the drawing pressure plate is the distance between the pressure action point of the drawing pressure plate and the bottom surface of the horizontal part. It is preferable to be offset with respect to the position of the pressure application point of the contact plate so as to be longer than the distance between the pressure application point of the contact plate and the bottom surface of the horizontal part. In other words, it is not necessary that the pressure application point of the pressure plate and the contact plate or the pressure application point of the pressure plate and the pressure application point of the contact plate are opposed to each other. What is necessary is just to arrange | position in the position relatively higher than the pressure action point of a contact plate or a contact plate. For example, the vertical length of the pressure plate may be longer than the vertical length of the contact plate, or the vertical length of the contact plate may be shorter than the vertical length of the pressure plate.

  The pressure action point of the suction plate is adjusted so that the distance between the pressure action point of the suction plate and the horizontal bottom surface is longer than the distance between the pressure action point of the contact plate and the horizontal bottom surface. When offset with respect to the position of the pressure application point, even if the bathtub side wall is divided into a strong rim part and a non-strength apron part, the clamping force generated by the reaction of the vertical part has a strong rim. Therefore, the handrail for bathtub can be securely and firmly attached to the bathtub side wall without damaging a fragile bathtub side wall such as an apron.

  In addition, as described above, when the pressure application point of the drawing plate is offset with respect to the position of the pressure application point of the contact plate, the displacement of the pressure application point of the drawing plate and the pressure application point of the contact plate is caused. The handrail for bathtubs of the present invention strongly resists the force of the user without falling even if the user gives a force to tilt the handrail portion toward the drawing pressure plate, for example. Can do.

  On the other hand, in the handrail for bathtubs, a rotation moment is generated that tries to tilt the fixed frame and the movable frame toward the contact plate side. You may attach the leg part which contact | abuts. Moreover, in order to support the force added by the user through the leg part, the handrail part may be attached to the leg part or the vertical part. In addition, if the contact plate is configured as a part of a part integrated with the vertical portion, or if the contact plate is mounted so as not to be rotatable with respect to the vertical portion, the wobbling after the handrail for bathtub is attached Therefore, the leg portion for contacting the floor surface can be omitted without sacrificing safety.

  Here, the pressure application point of the drawing pressure plate means the center position of the pressure that the drawing pressure plate acts on the bathtub side wall when the drawing pressure plate is drawn toward the bathtub side wall or the contact plate. Is the central position of the pressure at which the contact plate acts on the bathtub side wall because the contact plate presses the bathtub side wall as a reaction of the force with which the suction plate pulls (presses) the bathtub side wall. Means.

  In addition, when the drawing pressure plate or the contact plate is formed of a flat surface and pressure is uniformly applied to the entire working surface of the drawing pressure plate or the contact plate, the pressure acting point is generally the center of gravity of the working surface. Means position. However, when the drawing pressure plate or the contact plate is supported by the support shaft on the retracting portion or the vertical portion, the pressure tends to concentrate on the extension line of the support shaft. It can be handled as meaning a point located on the extension line of the bearing shaft on the working surface.

  For this reason, when the drawing pressure plate or the contact plate is supported by the retracting portion or the vertical portion by the support shaft, the pressure application point of the drawing pressure plate is offset with respect to the position of the pressure application point of the contact plate. The bearing shaft supporting the suction plate is disposed at a position relatively lower than the position of the bearing shaft supporting the contact plate, or the support shaft supporting the contact plate is the suction pressure plate. It means that it is arrange | positioned in the position relatively higher than the position of the support shaft which is supporting.

  In the handrail for bathtub of the present invention, the fixed frame is directly placed on the upper surface of the bathtub side wall, and the movable frame only advances and retreats with respect to the fixed frame directly placed on the upper surface of the bathtub side wall. In addition, the movable frame can be securely attached in a stable state without causing positional displacement or frictional force (residual stress) between the upper surface of the bathtub side wall and the pulling operation of the movable frame. In addition, according to the present invention, the handrail for the bathtub can be used without changing the relative position of the handrail portion attached to the fixed frame or the handle knob with respect to the bathtub side wall before and after clamping the bathtub side wall by the fixed frame and the movable frame. Can be attached to the bathtub side wall.

  In the handrail for bathtubs of the present invention, it becomes possible to arrange a moving device for retracting the movable frame on the side surface of the bathtub side wall via the pull-in operation unit, and a horizontal part and a connecting part arranged on the upper surface of the bathtub side wall. Therefore, the structure of the horizontal part and the connecting part arranged on the upper surface of the bathtub side wall can be simplified and the thickness thereof can be made extremely thin. Therefore, even when the handrail for bathtub of the present invention is attached to the bathtub side wall, the movable frame or the fixed frame does not cause a gap or the like such that the bath temperature decreases between the bathtub side wall and the lid, It enables attachment of the lid having a high sealing property to the bathtub.

  According to the handrail for bathtub of the present invention, the distance between the pressure acting point of the suction plate and the horizontal part bottom surface is longer than the distance between the pressure acting point of the contact plate and the horizontal part bottom surface, Since the pressure application point of the suction plate is offset with respect to the position of the pressure application point of the abutment plate, the vertical portion can be obtained even if the bathtub side wall is divided into a strong rim portion and a non-strength apron portion. It is possible to accurately guide the clamping force generated by the reaction to the strong rim part, and securely and firmly attach the handrail for the bathtub to the bathtub side wall without damaging the fragile bathtub side wall part such as the apron part. be able to.

It is a whole schematic diagram of the handrail for bathtubs of the present invention. It is a side view of the handrail for bathtubs shown by FIG. It is sectional drawing of the handrail for bathtubs which has the moving apparatus (torque transmission and interruption | blocking means) of the 1st aspect shown by FIG. It is sectional drawing of the handrail for bathtubs which has the moving apparatus (torque transmission and interruption | blocking means) of the 1st aspect shown by FIG. It is an exploded view of the handrail for bathtubs shown by FIG. FIG. 5 is an exploded view of the movable frame on the side having a retracting operation unit shown in FIG. 4. It is an exploded view of the movable frame by the side which has a drawing-in part shown by FIG. It is a schematic diagram which shows the aspect which attaches a handle knob to a movable frame. FIG. 7B is an exploded view of a portion around the handle knob shown in FIG. 7A. It is sectional drawing of the handrail for bathtubs which has the moving apparatus (torque transmission / interruption | blocking means) of a 2nd aspect. It is sectional drawing which cut off the handrail for bathtubs shown by FIG. 8 in the XX cross section. It is an exploded view of the movable frame by the side which has a drawing operation part shown by FIG.

  Hereinafter, a handrail for bathtubs according to an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the examples shown below, and various modifications can be made without departing from the technical idea of the present invention.

First Embodiment With reference to FIGS. 1 and 2, the main configuration of a handrail 1 for a bathtub according to a first embodiment of the present invention will be described. FIG. 1 shows an overall outline of a handrail 1 for a bathtub according to this embodiment, and FIG. 2 shows a side view of the handrail 1 for a bathtub shown in FIG. 3a and 3b are sectional views of the handrail 1 for a bathtub having the moving device of the first aspect shown in FIG.

  As shown in FIGS. 1 and 2, the handrail 1 for a bathtub according to the present embodiment is mainly provided with an upper grip 90 and a leg 91, and has a substantially L-shaped fixed frame 2 downward in a side view. A side grip 92 and a substantially U-shaped movable frame 3 downward in a side view, and a moving device 4 for moving the movable frame 3 close to or away from the fixed frame 2. ing. In addition, the structure of the handrail 1 for bathtubs of this embodiment shown by FIG. 1 is the same as the structure of the handrail 1a for bathtubs concerning 2nd Embodiment mentioned later fundamentally except a moving apparatus.

  The fixed frame 2 includes a horizontal portion 21 disposed so as to face the upper surface of the bathtub side wall, and a vertical portion 20 connected to the horizontal portion 21 and disposed so as to face the side surface of the bathtub side wall. It is mounted directly so as to contact the side surface and the upper surface of the bathtub side wall.

  The movable frame 3 connects the retracting part 30 disposed so as to face the side surface of the bathtub side wall, the retracting operation part 31 disposed so as to oppose the retracting part 30, and the retracting part 30 and the retracting operation part 31. And is attached to the fixed frame 2 so as to be movable.

  The moving device 4 is connected to the vertical portion 20 of the fixed frame 2 and the retracting portion 30 of the movable frame 3, and moves the movable frame 3 to be movable relative to the fixed frame 2.

  As shown in FIGS. 2 and 3 a, an abutment plate 22 a for abutting against the bathtub side wall is non-rotatably attached to the inside of the fixed frame 2. A suction pressure plate 33 for contacting the bathtub side wall opposite to the contact plate 22a is attached to be swingable. The contact plate 22b may be attached to the inside of the fixed frame 2 so as to be able to swing as shown in FIG. 3b.

  Thus, in the handrail 1 for bathtubs of this embodiment, the fixed frame 2 is directly mounted on the upper surface of the bathtub side wall, and the movable frame 3 only advances and retreats on the fixed frame 2. For this reason, the handrail 1 for bathtubs of this embodiment produces a position shift and a frictional force (residual stress) between the fixed frame 2 and the upper surface of the bathtub side wall by the retracting operation of the movable frame 3 by the moving device 4. And can be firmly attached in a stable state.

  In the bathtub handrail 1 of this embodiment, the bathtub side wall is clamped by pulling the retracting portion 30 and the drawing pressure plate 33 of the movable frame 3 into the fixed frame 2 by the moving device 4. For this reason, when clamping the bathtub side wall, the moving device 4 separates the retracting operation portion 31 of the movable frame 3 from the vertical portion 20 of the fixed frame 2, thereby connecting the movable frame 3 via the connecting portion 32. The retracting portion 30 and the pulling pressure plate 33 function to be close to the vertical portion 20 and the contact plates 22a and 22b, and when the bathtub side wall clamp is released, the retracting operation portion 31 is brought close to the vertical portion 20. Thus, the retracting portion 30 and the drawing pressure plate 33 function to be separated from the vertical portion 20 and the contact plates 22a and 22b via the connecting portion 32 (see FIGS. 3a and 3b).

  For this reason, in this embodiment, the moving device 4 for retracting the movable frame 3 can be disposed on the side surface of the bathtub side wall via the retracting operation unit 31, and the horizontal portion 21 disposed on the upper surface of the bathtub side wall. Since it is no longer necessary to be provided in the connecting portion 32, it is arranged on the upper surface of the bathtub side wall although it is a handrail for a bathtub that pulls the movable frame as described in Patent Documents 5 and 6 to the fixed frame side. The structure of the horizontal part 21 and the connection part 32 to be performed can be simplified, and the thickness of the horizontal part 21 and the connection part 32 can be extremely reduced. As a result, even when the handrail 1 for bathtubs of this embodiment is attached to the bathtub side wall, the movable frame 3 or the fixed frame 2 creates a gap or the like that lowers the bath temperature between the bathtub side wall and the lid. This makes it possible to attach the lid having a high sealing property to the bathtub.

  FIG. 4 shows an exploded view of the handrail 1 for a bathtub shown in FIG. 1, and FIG. 5 shows the first of the movable frame 3 shown in FIG. FIG. 6 shows an exploded view of the second movable frame 3y on the side having the retracting portion 30. As shown in FIG.

  In the present embodiment, the movable frame 3 has a substantially L-shaped first movable frame 3x (FIG. 5) and a first lower frame so that the separation distance between the retracting unit 30 and the retracting operation unit 31 can be adjusted. The first movable frame 3x and the second movable frame 3y are composed of a second movable frame 3y (FIG. 6) that is substantially L-shaped downward and separate from the first movable frame 3x. Are connected via respective connecting portions 32x and 32y. Further, although not shown, the adjustment of the separation distance between the retracting portion 30 and the retracting operation portion 31 is made possible by, for example, configuring the retracting portion 30 and / or the retracting operation portion 31 as separate parts with respect to the connecting portion 32. However, this can also be achieved by enabling the attachment position to be changed with respect to the connecting portion 32.

  If the distance between the retracting portion 30 and the retracting operation portion 31 is adjustable, the distance between the retracting portion 30 and the retracting operation portion 31 is adjusted in advance to the thickness of the bathtub side wall, thereby moving the movable frame 3. Can be kept to the minimum width dimension required to clamp the bathtub sidewall. Therefore, it is possible to reduce the clamping operation by the moving device 4 and to shorten the attachment time, and it is also possible to minimize the protruding portion from the bathtub side wall of the movable frame 3 after being attached.

  Although not shown, when the connecting portion 32 is disposed on the upper side of the horizontal portion 21 as in the handrail 1 for bathtub of the present embodiment, the movable frame 3 changes the connecting angle in the horizontal direction with respect to the fixed frame 2. It may be attached so that it can swing. When the movable frame 3 is attached to the fixed frame 2 so as to be swingable, the clamp portions of the movable frame 3 and the fixed frame 2 are curved and smoothly follow the side wall of the bathtub where the thickness is not constant. Can be firmly attached to the side wall of the bathtub.

  Further, when the movable frame 3 itself is attached so as to be able to swing, the swinging angle that should be shared by the suction pressure plate 33 and the contact plate 22b becomes small even on the side wall of the bathtub that has the same curvature and thickness. The size of the frame 2 or the movable frame 3 or the size of the handrail body for the bathtub can be made compact.

  In the present embodiment, as shown in FIG. 5, the first movable frame 3 x is a piece-like body, and is connected to the retracting operation unit 31 arranged substantially vertically, the retracting operation unit 31, and substantially horizontal. The 1st connection part 32x arrange | positioned at is included. The retracting operation unit 31 is provided with a circular opening 310 for attaching the moving device 4, and the first connecting part 32 x can slide the second connecting part 32 y of the second movable frame 3 y. Two screw holes 320 for attachment and a slit-like long hole 321 are provided.

  As shown in FIG. 6, the second movable frame 3y is also a piece-like body, and a retracting portion 30 disposed substantially vertically, and a second connected to the retracting portion 30 and disposed substantially horizontally. The connecting portion 32y is included. A side grip 92 is screwed to the outside of the retracting portion 30, and two pulling pressure plates 23 are attached to the inside of the retracting portion 30 so as to be able to swing. In addition, the second connecting portion 32y is aligned with the screw hole 320 of the first connecting portion 32x and has two parallel slits 322 with locking grooves for screwing with screws. A notch 323 is provided to be aligned with the elongated hole 321 of the connecting portion 32x and to be screwed with a screw at an arbitrary position.

  Each of the slits 322 with the locking groove of the second connecting portion 32y is formed with three locking grooves 324 projecting laterally from the slit. Therefore, when the body portion of a screw (not shown) fixed in the screw hole 320 of the first connecting portion 32x is disposed in a slit other than the locking groove 324, the second movable frame 3y. The second connecting portion 32y can be smoothly slid relative to the first connecting portion 32x of the first movable frame 3x. On the other hand, when the screw body fixed to the screw hole 320 of the first connecting portion 32x is locked in the locking groove 324, the second connecting portion 32y of the second movable frame 3y is The first movable frame 3x cannot be slid with respect to the first connecting portion 32x, and is firmly fixed by tightening a screw.

  Further, the second movable frame 3y has the first movable portion 321 at three positions by aligning the elongated holes 321 of the first connecting portion 32x and the notches 323 of the second connecting portion 32y and screwing them with screws. Since it can be screwed to the frame 3x (see FIG. 7a), it is possible to strongly prevent the second movable frame 3y from rotating in the horizontal direction with respect to the first movable frame 3x.

  The contact plates 22a and 22b (FIGS. 3a and 3b) attached to the inside of the fixed frame 2 are provided in order to accurately press the rim portion at the upper part of the bathtub side wall and to increase the grip force. Therefore, the contact plates 22a and 22b are disposed adjacent to the horizontal portion 21 of the fixed frame 2, and a non-slip rubber is mounted on the surface thereof. The contact plate 22a (FIG. 3a) is fixed to the inside of the fixed frame 2 with an emphasis on being able to strongly press the bathtub side wall (particularly the rim portion), whereas the contact plate 22b (FIG. 3b). Is attached to the inside of the fixed frame 2 so as to be swingable, with emphasis on being able to flexibly follow the shape of the bathtub side wall that is curved, inclined, or the like. In particular, when the contact plate 22a is attached to the fixed frame 2 so as not to rotate as shown in FIG. 3a, the wobble after the bathtub handrail 1 is attached can be greatly reduced. A leg portion 91 to be brought into contact with the floor, which will be described later, can be omitted without sacrificing safety.

  The drawing pressure plate 33 (FIG. 6) attached to the inner side of the movable frame 3 is provided particularly for accurately pressing the wall surface in the bathtub and increasing the gripping force. Therefore, the longitudinal length of the suction pressure plate 33 is relatively longer than the longitudinal length of the contact plates 22a and 22b, and a non-slip rubber 34 is mounted on the surface thereof. The pressure plate 33 is attached to the inside of the fixed frame 2 so that it can flexibly follow the shape of the curved or inclined bathtub side wall, but is movable like the contact plate 22a. It may be fixed inside the frame 3 so as not to swing. Further, the number of the drawing pressure plates 33 may be one, or two or more as shown in the figure. Further, when two or more drawing pressure plates 33 are attached, a part of the drawing pressure plates 33 can be swung. Some may be fixed. The configuration of these suction pressure plates can also be applied to the configuration of the contact plate described above.

  As can be understood with reference to FIG. 6, the two drawing pressure plates 33 are pivotally supported on the connecting plate 35 by fixing pins, respectively, and the connecting plate 35 is pulled by the retracting portion 30 of the second movable frame 3 y by the fixing pins. Is pivotally supported. Since play is provided for fixing the two drawing pressure plates 33 using the fixing pins and fixing the connecting plate 35, the two drawing pressure plates 33 can swing their heads relative to the connecting plate 35. Yes, the connecting plate 35 can also swing its head with respect to the retracting portion 30.

  The drawing plate 33 and the contact plates 22a and 22b can be formed of a flat plate made of resin or metal, a hard / soft rubber, or a combination thereof to increase the frictional force with the bathtub side wall, and the retracting portion 30. And / or may be configured as an integral part of the vertical portion 20, or may be configured as a separate part separated from the retracting portion 30 and / or the vertical portion 20 as in the present embodiment. Further, when the drawing pressure plate 33 and the contact plates 22a and 22b are configured as separate parts from the drawing-in portion 30 and / or the vertical portion 20, as described above, smoothly follow the curved or inclined bathtub side wall. The pulling pressure plate 33 and the contact plate 22b may be attached to the retracting portion 30 and / or the vertical portion 20 so as to be able to swing.

  As shown in FIGS. 3 a and 3 b and FIG. 8 described later, in this embodiment, the pressure application point 330 of the suction pressure plate 33 is between the pressure action point 330 of the suction pressure plate 33 and the horizontal portion bottom surface 210. The distance L3 is offset with respect to the position of the pressure application point 220 of the contact plates 22a and 22b so that the distance L3 is longer than the distance L2 between the pressure application point 220 of the contact plates 22a and 22b and the horizontal bottom surface 210. It has the feature of being.

  In other words, in the present embodiment, the pressure plate 33 and the contact plates 22a and 22b or the pressure application point 330 of the pressure plate 33 and the pressure application point 220 of the contact plates 22a and 22b are not opposed to each other. Instead, the pressure plate 33 and the pressure application point 330 of the pressure plate 33 are disposed at a position relatively higher than the pressure application point 220 of the contact plates 22a and 22b and the contact plates 22a and 22b. For this reason, in this embodiment, the vertical length of the pressure plate 33 is longer than the vertical length of the contact plates 22a and 22b. Conversely, the vertical length of the contact plates 22a and 22b is longer than the vertical length of the pressure plates 22a and 22b. Is also shorter.

  Pulling is performed so that the distance L3 between the pressure application point 330 of the drawing pressure plate 33 and the horizontal bottom surface 210 is longer than the distance L2 between the pressure application point 220 of the contact plates 22a and 22b and the horizontal bottom surface 210. When the pressure application point 330 of the pressure plate 33 is offset with respect to the position of the pressure application point 220 of the contact plates 22a and 22b, the bathtub side wall is divided into a rim portion having strength and an apron portion having no strength. However, since the clamping force transmitted from the vertical portion 20 can be accurately guided to the rim portion having strength through the contact plates 22a and 22b, the fragile bathtub side wall portion such as the apron portion is damaged. And the handrail 1 for the bathtub can be securely and firmly attached to the side wall of the bathtub.

  Further, when the pressure application point 330 of the drawing plate 33 is offset with respect to the position of the pressure application point 220 of the contact plates 22a and 22b, the pressure application point 330 of the drawing plate 33 and the pressure of the contact plates 22a and 22b. The bathtub handrail 1 according to the present embodiment is used without falling even if the user gives a force to tilt the upper grip 90 toward the pressure plate 33 due to the positional deviation from the action point 220, for example. Can withstand the power of the other.

  The pressure application point 330 of the suction pressure plate 33 means the center position of the pressure at which the suction pressure plate 33 acts on the bathtub side wall when the suction pressure plate 33 is drawn toward the bathtub side wall or the contact plates 22a and 22b. On the other hand, the pressure action point 220 of the contact plates 22a and 22b is that the contact plates 22a and 22b press the bathtub side wall as a reaction of the force with which the suction pressure plate 33 pulls (presses) the bathtub side wall. It means the center position of the pressure at which the contact plates 22a, 22b act on the bathtub side wall.

  For example, in the case of the handrail 1 for a bathtub shown in FIG. 3b, the suction pressure plate 33 and the contact plate 22b are configured so that pressure is uniformly applied to the entire working surface on a flat surface, and The drawing pressure plate 33 is supported by the drawing portion 30 by a drawing plate fixing pin, and the contact plate 22b is supported by the vertical portion 20 by the contact plate fixing pin. Therefore, it is considered that the pressure application point 330 of the suction pressure plate 33 exists on the action surface on the extension line of the suction pressure plate fixing pin, and the pressure action point 220 of the contact plate 22b is on the extension line of the contact plate fixing pin. It is considered to exist on the working surface of On the other hand, in the case of the handrail 1 for a bathtub shown in FIG. 3a, the contact plate 22a is configured so that pressure is uniformly applied to the entire working surface on a flat surface, and the contact plate 22a. The whole is fixed inside the fixed frame 2. For this reason, it is considered that the pressure application point 220 of the contact plate 22a exists in the vicinity of the center of gravity, which is the center of the application surface.

  For this reason, in the case of the handrail 1 for a bathtub shown in FIG. 3b, the pressure application point 330 of the pressure application plate 33 is offset with respect to the position of the pressure application point 220 of the contact plate 22b. A mode in which the supporting pressure plate fixing pin is arranged at a position relatively lower than the position of the abutting plate fixing pin supporting the abutting plate 22b, or a contact supporting the abutting plate 22b. This means that the contact plate fixing pin means an aspect in which the contact plate fixing pin is arranged at a position relatively higher than the position of the drawing pressure plate fixing pin that supports the drawing pressure plate 33.

  As shown in FIGS. 3 a, 3 b and 5, the moving device 4 of this embodiment includes a nut 41 attached to the retracting operation unit 31, and a bolt shaft 40 screwed with the nut 41. , And a handle knob 42 for rotating the nut 41. The nut 41 is rotatably connected to the opening 310 of the retracting operation portion 31, and the tip end portion of the bolt shaft 40 is attached to the attachment hole 200 of the vertical portion 20 so as not to rotate.

  When the moving device 4 is constituted by the nut 41 and the bolt shaft 40, the retracting operation portion 31 can be easily brought close to or separated from the vertical portion 20 by the screw advance and retreat of the bolt shaft 40, and the state is also reliably maintained. can do. Although not shown, when the bolt shaft 40 is connected to the vertical portion 20 so as to be able to swing, the movable frame 3 can be fixed to the fixed frame 2 so as to be swingable as described above.

  Furthermore, in the case of the present embodiment, the bolt shaft 40 is screwed back and forth by rotating the nut 41 attached to the retracting operation unit 31, so that the position of the handle knob 42 for rotating the nut 41 is the retracting operation unit. It is invariable with respect to 31, and the dangerous part which protrudes from the handrail 1 for bathtubs can be reduced. For this reason, the handle knob 42 is provided with a storage chamber 420 for receiving the rear end portion of the bolt shaft 40 that has been retracted by rotating the nut 41. It also functions as a protective cover for protecting the user from 40.

  Further, in this embodiment, the tip end portion of the bolt shaft 40 is non-rotatably connected to the fixed frame 2, and the nut 4 screwed with the bolt shaft 40 is rotatably attached to the movable frame 3. . Therefore, when the nut 4 attached to the movable frame 3 is rotated by the handle knob 42, the bolt shaft 40 screwed with the nut 4 changes the relative position between the movable frame 3 and the fixed frame 2, and the movable frame. 3 is pulled toward the bathtub side wall.

  Therefore, in the handrail 1 for bathtubs of this embodiment, after the stationary frame 2 is placed in contact with the side wall of the bathtub, it is attached to the stationary frame 2 and the main body frame 2 even if the drawing pressure plate 33 is pulled into the side wall of the bathtub. There is no problem that the upper grip 90 (see FIG. 1) thus moved moves away from the bathtub side wall, and as a result, the upper grip 90 is not easily tilted toward the washing area. Moreover, in order to fix the handrail 1 for bathtubs, it is not necessary to attach a pressing plate or the like that comes close to or away from the fixed frame from the washing area side.

  In the moving device 4 of the present embodiment, the rotational force is transmitted from the handle knob 42 to the nut 41 between the handle knob 42 and the nut 41 when the force is less than a predetermined force, and the handle knob 42 is transmitted above the predetermined force. Torque transmission / cut-off means 43 for cutting off the transmission of torque from the nut to the nut 41 is incorporated.

  If the torque transfer / shut-off means 43 is incorporated in the moving device 4, even if the user turns the handle knob 42 and strongly pulls the retracting portion 30 toward the vertical portion 20, it does not damage the bathtub side wall. The bathtub handrail 1 can be attached to the bathtub side wall with sufficient pulling pressure (clamping force).

  In the handrail 1 for bathtubs of this embodiment, the front-end | tip part of the bolt shaft 40 is processed into the rectangular shape which has the flange 400, and it fits with the front-end | tip part of the bolt shaft 40 in the perpendicular | vertical part 20 of the fixed frame 2. A mounting hole 200 is provided. For this reason, the bolt shaft 40 is inserted into the mounting hole 200 of the vertical portion 20, and the stopper cover 401 having an outer diameter larger than that of the mounting hole 200 is screwed from the side where the tip portion is exposed. The front end portion of 40 is non-rotatably connected to the fixed frame 2.

  On the other hand, an opening 310 is provided in the vertical portion 20 of the first movable frame 3x, and the nut 41 is fixed to the body 410 and the body 410 inserted into the opening 310 of the retracting operation unit 31. A first flange portion 411 having an outer diameter larger than that of the opening 310 for contact with the retraction operation unit 31 from one side, and from the opening 310 for contact with the retraction operation unit 31 from the other side. And a second flange portion 412 having a large outer diameter and detachably attached to the body portion 410.

  For this reason, the nut 41 is rotatably attached to the movable frame 3 by inserting the second flange portion 412 from the side opposite to the first flange portion 411 by inserting the body portion 410 into the opening 310. . In addition, a resin washer 413 is inserted between the first flange portion 411 and the retracting operation portion 31 and between the second flange portion 412 and the retracting operation portion 31, and the nut 41 is loose. The nut 41 is smoothly rotated with respect to the retracting operation portion 31 of the movable frame 3.

  As shown in FIG. 5, the torque transmission / cut-off means 43 used in this embodiment is synchronized with the rotation of the handle knob 42 and is orthogonal to the rotation axis of the handle knob 42. And a transmission portion 432 having a torque transmission surface 433 that is synchronized with the rotation of the nut 41 and abuts against the torque transmission surface 431, and the torque transmission surface 431. And the torque transmission surface 433 respectively lock the torque transmission surface 431 and the torque transmission surface 433 when the transmitted torque is less than a predetermined value, and the transmitted torque is a predetermined value. In the above, it has the characteristic that the recessed part or convex part provided with the inclined surface which produces a slip between the torque transmission surface 431 and the torque transmission surface 433 is included.

  Further, the torque transmission / interruption means 43 has a transmission portion 430 attached so as to be movable in the direction of the rotation axis of the handle knob 42, and the transmission portion 430 attached so as to be movable is connected to the transmission portion 430. A transmission portion urging means 434 that urges the portion 432 toward the portion 432 is provided. Further, the end of the transmission portion urging means 434 is fixed by a stopper 436 attached to the end of the nut 41 with a screw 435.

  The center of the torque transmission surface 431 and the center of the torque transmission surface 433 of the torque transmission / shut-off means 43 are arranged coaxially with the rotation shafts of the handle knob 42 and the nut 41. Further, on the torque transmission surface 431 and the torque transmission surface 433, a concave / convex portion including a slope inclined from the torque transmission surface 431 or the torque transmission surface 433 is formed. The inclined surface of the torque transmitting surface 431 and the inclined surface of the torque transmitting surface 433 are formed so that the opposing inclined surfaces that face each other when the handle knob 42 is rotated so as to draw the suction pressure plate 33 of the movable frame 3 toward the bathtub side wall. It is sloped to rise.

  The annular transmission portion 430 having the torque transmission surface 431 is slidably mounted along the rotation axis of the handle knob 42 and the nut 41, and the torque transmission surface is received by an elastic body (transmission portion urging means) 434. It is biased toward 433. The elastic body 434 is not particularly limited as long as it can be elastically deformed, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.

  For this reason, a constant frictional force is always generated between the inclined surface of the torque transmission surface 431 and the inclined surface of the torque transmission surface 433. When the torque transmitted from the handle knob 42 to the nut 41 is less than a predetermined value, the inclined surface of the torque transmitting surface 431 cannot get over the inclined surface of the torque transmitting surface 433, and is engaged in a state where it is engaged with each other. Match. By this engagement, the torque of the handle knob 42 is transmitted to the nut 41, the bolt shaft 40 screwed with the nut 41 changes the relative position of the movable frame 3 and the fixed frame 2, and is attached to the movable frame 3. The drawn pressure plate 33 is drawn toward the bathtub side wall.

  On the other hand, when the torque transmitted from the handle knob 42 to the nut 41 exceeds a predetermined value, the inclined surface of the torque transmitting surface 431 slips between the inclined surface of the torque transmitting surface 433. As a result, the annular transmission part 430 provided with the torque transmission surface 431 moves backward against the elastic body 434, and the inclined surface of the torque transmission surface 431 gets over the inclined surface of the torque transmission surface 433, thereby engaging the both. Is released. For this reason, even if the handle knob 42 is rotated in this state, the handle knob 42 only rotates idly with respect to the nut 41, and torque is not transmitted from the handle knob 42 to the nut 41.

  Further, a vertical surface substantially orthogonal to the torque transmission surface 431 is formed at the rear end of the inclined surface of the torque transmission surface 431, and the torque transmission surface 433 is approximately at the rear end of the inclined surface of the torque transmission surface 433. An orthogonal vertical plane is formed. The vertical surface of the torque transmission surface 431 and the vertical surface of the torque transmission surface 433 come into contact with each other when the handle knob 43 is rotated so as to separate the suction pressure plate 33 of the movable frame 3 from the side wall of the bathtub. Therefore, when the handle knob 42 is rotated so as to separate the suction pressure plate 33 from the side wall of the bathtub, the handle knob 42 and the nut 41 always rotate in synchronism regardless of the magnitude of the transmitted torque.

  Thus, in the torque transmission / interruption means 43, the torque transmission / reception surface 433 that rotates in synchronization with the rotation of the nut 41 is attached to the outer peripheral surface of the nut 41. For this reason, the torque transmission / interruption means 43 can be partially overlapped with the main body of the nut 41. Therefore, the torque transmission / interruption means 43 and the movable frame of the handle knob 42 provided with the torque transmission / interruption means 43 are provided. The protrusion length from 3 can be suppressed.

  FIG. 7a shows a schematic view showing how the handle knob 42 is assembled to the movable frame 3, and FIG. 7b shows an exploded view of the handle knob peripheral portion shown in FIG. 7a. The handle knob 42 includes a knob 420, a storage body 421, and a rotating flange 422. The handle knob 42 is attached to the retracting operation unit 31 with a fixed opening that has a rotating flange that is smaller in inner diameter than the outer diameter of the rotating flange and is half the inner diameter of the storage barrel 421. The upper handle cover 423 and the lower handle cover 424 are sandwiched from above and below, and the upper handle cover 423 and the lower handle cover 424 are attached to the retracting operation unit 31. In the present embodiment, the decorative cover 425 is attached from above the upper handle cover 423 and the lower handle cover 424 so as to improve the appearance and not pinch the user's fingertip or the like.

  According to the above-described attachment of the handle knob 42 to the pull-in operation unit 31, the handle knob 42 does not depend on the manner of attachment to the nut 42 or the torque transmission / cut-off means 43 and does not move in the axial direction. It can be rotated at a fixed position on 31.

  With reference to FIGS. 1 and 4, a substantially L-shaped fixed frame 2 will be described which has an upper grip 90 and a leg 91 attached thereto in the bathtub handrail 1 of the present embodiment and is downwardly viewed in a side view.

  In the present embodiment, the upper grip 90 has two support legs 900 provided with a plurality of pin holes 901 aligned with an insertion hole 202 and a lock pin 204 of a sleeve 201, which will be described later. The part 22 includes two sleeves 201 for slidably receiving the support legs 900. Each sleeve 201 is provided with an insertion hole 202, and a lock pin 204 urged toward the inside of the sleeve 201 by a spring 203 is attached to the insertion hole 202.

  For this reason, in the handrail 1 for bathtubs of this embodiment, the knob 205 of the lock pin 204 is moved in a direction against the urging of the spring 203, and the locking of the support leg 900 by the lock pin 204 is released, thereby The height of the grip 90 can be easily adjusted in the vertical direction. On the other hand, when the pin 205 901 of the support leg 900 is aligned with the insertion hole 202 of the sleeve 201, when the knob 205 is released freely, the lock pin 204 is inserted into the pin hole 901 through the insertion hole 202 by the spring 203. Therefore, the support leg 900 is easily locked in the sleeve 201, and the upper grip 90 is fixed to the fixed frame 2.

  Moreover, in the handrail 1 for bathtubs of this embodiment, the leg part 91 whose length is adjustable is attached to the vertical part 20 of the fixed frame 2. By adjusting the length of the leg portion 91, the tip can be brought into contact with the floor surface of the washing place. Therefore, by using the handrail 1 for the bathtub, the fixed frame 2 and the movable frame 3 can be moved to the fixed frame 2 and the movable frame 3. Even if a rotational moment that tries to tilt the frame 3 toward the contact plates 22a and 22b is applied, it can be sufficiently opposed and safe.

  In this embodiment, since there is only one leg portion 91, a rotational moment is applied to the fixed frame 2 and the movable frame 3 so as to tilt the fixed frame 2 and the movable frame 3 along the wall surface of the bathtub side wall. However, unlike a case where a plurality of leg portions are arranged, a gap is not generated between some of the leg portions and the floor surface, and there is no backlash. Although not shown, the support leg 900 of the upper grip 90 may be directly connected to the leg part so that the force applied by the user is supported by the leg part.

  Below, the attachment method to the bathtub side wall of the handrail 1 for bathtubs of this embodiment is demonstrated easily. In the bathtub handrail 1 of this embodiment, first, the first movable frame 3x and the second movable frame 3y are set so that the distance between the retracting portion 30 and the retracting operation portion 31 of the movable frame 3 matches the thickness of the bathtub. Adjust and fix the connection state.

  Next, the fixed frame 2 is temporarily placed at a position where the horizontal part is directly placed on the upper surface of the bathtub side wall and the contact plates 22a and 22b of the vertical part 20 are brought into contact with the side surface of the bathtub side wall. The length of the leg 91 is adjusted so that the tip of the leg 91 abuts against the floor surface of the washing area. In particular, when the bathtub side wall has a rim portion and an apron portion, the contact plates 22a and 22b may be brought into contact with the rim portion.

  When the handle knob 42 is turned, the suction pressure plate 33 attached to the retracting portion 30 of the movable frame 3 is brought into contact with the side wall of the bathtub side wall, and the handle knob 42 is idled by the torque transmission / cutoff means 43 (from the handle knob 42). Rotate the handle knob 42 until transmission of turning force to the nut 41 is interrupted).

  As a result, the handrail 1 for a bathtub according to the present embodiment does not damage the bathtub side wall, and does not cause a positional shift or frictional force (residual stress) between the fixed frame 2 and the upper surface of the bathtub side wall. Even a bathtub side wall having a curved or inclined shape can be firmly attached to the bathtub side wall while flexibly following it.

  After attaching the bathtub handrail 1 of the present embodiment to the bathtub side wall as described above, the upper grip 90 is moved by moving the knob 205 of the lock pin 204 and releasing the locking of the support leg 900 by the lock pin 204. The height of the upper grip 90 is adjusted by releasing the knob 205 at a position where the pin hole 901 of the support leg 900 is aligned with the insertion hole 202 of the sleeve 201.

Second Embodiment Next, a bathtub rail 1a according to a second embodiment of the present invention will be described with reference to FIGS. The handrail 1a for bathtubs of this embodiment is a torque transmission of the 1st aspect with which the torque transmission surface 431 and the torque transmission surface 433 are arrange | positioned so that it may orthogonally cross with respect to the rotating shaft of the handle knob 42 and the bolt shaft 40. Unlike the moving device 4 having the blocking means 43, as the moving device 4a of the second aspect, a torque transmission surface is provided on the inner peripheral surface of the handle knob 42a (hereinafter referred to as “torque transmission circumferential surface 431a”). Basically, it is the same as the handrail 1b for the bathtub of the third embodiment except that the torque transmission / cutoff means 43a of the type in which the torque transmission surface 433a is provided on the outer peripheral surface of the bolt shaft 40a is used. It has a configuration. For this reason, since the handrail 1a for bathtubs of this embodiment can have the same effect as the handrail 1 for bathtubs of 1st Embodiment fundamentally, the handrail 1 for bathtubs of 1st Embodiment and Explanation of overlapping configurations, effects, and installation methods is omitted.

  FIG. 8 shows a cross-sectional view of the bathtub handrail 1a provided with the torque transmission / interruption means 43a of the second aspect along the axis of the bolt shaft 40a. FIG. Sectional drawing which cut off the handrail 1a for bathtubs shown by XX in the XX cross section is shown. FIG. 10 is an exploded view of the first movable frame 3x having the retracting operation unit 31 shown in FIG.

  More specifically, the torque transmission / interruption means 43a is provided with a substantially cylindrical torque transmission circumferential surface 431a that is synchronized with the rotation of the handle knob 42a and is parallel to the rotation axis of the handle knob 42a. The transmission portion 430a has a sliding portion 432a that is synchronized with the rotation of the nut 41a and includes a sliding surface 437a that is in sliding contact with the torque transmission circumferential surface 431a, and the sliding portion 432a is A key groove 438a that is parallel to the rotation axis of the nut 41a and is disposed on the sliding surface 437a, and a torque transmission surface 433a that comes into contact with the torque transmission circumferential surface 431a are provided. 438a, a key 44a disposed so as to be movable in a radial direction with respect to the rotation axis of the nut 41a, and a torque transmission surface 433a of the key 44a, a torque transmission circumferential surface of the handle knob 42a. And a torque transmission circumferential surface 431a and a torque transmission surface 433a, respectively, when the rotational force transmitted is less than a predetermined value. The surface 431a and the torque transmission surface 433a are mutually locked, and when the transmitted rotational force is a predetermined value or more, the slope that causes the slip between the torque transmission circumferential surface 431a and the torque transmission surface 433a It has the characteristic of including the recessed part or convex part provided with the surface.

  The circumferential transmission portion 430a of the second aspect is detachable separately from the handle knob 42a main body in consideration of the fact that the torque transmission circumferential surface 431a may be worn when used for a long period of time. Since it is formed as a part, it can be easily replaced and is convenient. In addition, since the handle knob 42a main body, which does not require wear resistance, can be made of a plastic material or the like, there is an advantage that processing around the handle knob 42a and weight reduction are facilitated.

  In the torque transmission / interruption means 43a of the second mode, the rotational axis of the torque transmission circumferential surface 431a, the rotational axis of the sliding surface 437a, and the rotational axis of the torque transmission surface 433a are the rotational axes of the handle knob 42a and the nut 41a. And are arranged on the same axis. Further, on the torque transmission circumferential surface 431a of the handle knob 42a (circumferential transmission portion 430a), a concave / convex portion including a slope inclined further inward from the cylindrical torque transmission circumferential surface 431a is formed. . On the other hand, on the sliding surface 437a of the nut 41a (sliding portion 432a), a key groove 438a disposed in parallel to the rotation axis of the nut 41a is formed, and in the key groove 438a, A key 44a that is movable in the radial direction with respect to the rotation axis of the nut 41a is disposed. A concave / convex portion including an inclined surface is formed on the torque transmission surface 433a of the key 44a, and the key 44a is urged toward the torque transmission circumferential surface 431a by an elastic body (biasing means) 434a. Yes. The elastic body 434a is not particularly limited as long as it is elastically deformable, such as a coil spring, a disc spring, or an elastic resin material, and a known one can be used.

  For this reason, a constant frictional force is always generated between the inclined surface of the torque transmission circumferential surface 431a and the inclined surface of the torque transmission surface 433a of the key 44a. When the torque transmitted from the handle knob 42a to the nut 41a is less than a predetermined value, the inclined surface of the torque transmitting surface 433a of the key 44a gets over the inclined surface of the torque transmitting circumferential surface 431a of the handle knob 42a. Cannot be engaged, and they are engaged with each other. By this engagement, the torque of the handle knob 42a is transmitted to the nut 41a, and the bolt shaft 40a screwed with the nut 41a changes the relative position between the movable frame 3 and the fixed frame 2, and is attached to the movable frame 3. The drawn pressure plate 33 is drawn toward the bathtub side wall.

  On the other hand, when the torque transmitted from the handle knob 42a to the nut 41a exceeds a predetermined value, the inclined surface of the torque transmission surface 433a of the nut 41a is between the inclined surface of the torque transmission circumferential surface 431a of the handle knob 42a. Slip occurs. As a result, the key 44a having the inclined surface retreats against the elastic body 434a, and the inclined surface of the torque transmission surface 433a of the key 44a gets over the inclined surface of the torque transmission circumferential surface 431a of the handle knob 42a. Is disengaged. Therefore, even if the handle knob 42a is rotated in this state, the handle knob 42a only rotates idle around the nut 41a, and torque is not transmitted from the handle knob 42a to the nut 41a.

  Further, a vertical surface substantially orthogonal to the torque transmission circumferential surface 431a is formed at the rear end of the inclined surface of the torque transmission circumferential surface 431a of the handle knob 42a. In addition, since the cross section in the width direction of the key 44a has a substantially trapezoidal shape, a vertical surface substantially orthogonal to the inclined surface of the key 44a is formed at the rear end of the inclined surface of the torque transmission surface 433a of the key 44a. ing. When the handle knob 42a is rotated so that the vertical surface of the torque transmission circumferential surface 431a of the handle knob 42a and the vertical surface of the torque transmission surface 433a of the key 44a are separated from the side wall of the bathtub. , Abut and engage each other. Therefore, when the handle knob 42a is rotated so as to separate the suction pressure plate 33 from the side wall of the bathtub, the handle knob 42a and the nut 41a always rotate in synchronism regardless of the magnitude of the transmitted torque.

  Thus, the torque transmission / interruption means 43a of the second aspect uses a substantially cylindrical outer peripheral surface disposed in parallel to the rotation axis of the nut 41a, not the end surface of the nut 41a. However, a key groove 438a is provided on the outer peripheral surface (sliding surface 437a) of the nut 41a (sliding portion 432a), and the key groove 438a is engaged in the key groove 438a by moving in the radial direction with respect to the rotation shaft of the nut 41a. / Since the key 44a having a releasable inclined surface is arranged, even when the clearance between the inner peripheral surface of the handle knob 42a and the outer peripheral surface of the nut 41a is small, torque is reliably transmitted or cut off from the handle knob 42a to the nut 41a. can do.

DESCRIPTION OF SYMBOLS 1, 1a ... Handrail for bathtubs 2 ... Fixed frame 20 ... Vertical part 200 ... Mounting hole 201 ... Sleeve 202 ... Insertion hole 203 ... Spring 204 ... · Lock pin 205 ··· Knob 21 ··· Horizontal portion 210 ··· Horizontal portion bottom surface 220 · · · Pressure application point (contact plate)
22a, 22b ... contact plate 3 ... movable frame 3x ... first movable frame 3y ... second movable frame 30 ... retracting part 31 ... retracting Operation part 310 ... opening 32 ... connection part 32x ... first connection part 32y ... second connection part 320 ... screw hole 321 ... long hole 322 ... locking Slit with groove 323... Cut 324... Locking groove 33... Suction plate 330.
34 ··· Non-slip rubber 35 ··· Connection plate 4, 4a · Moving device 40, 40a · Bolt shaft 400, 400a · Flange 401, 401a · Stop cover 41, 41a · ... Nut 410,410a ... Body part 411,411a ... First flange part 412,412a ... Second flange part 413,413a ... Washer 42,42a ... Handle knob 420, 420a ... storage chamber 421, 421a ... storage body 422, 422a ... rotating flange 423 ... upper handle cover 424 ... lower handle cover 425 ... makeup cover 43, 43a ...・ Torque transmission / shut-off means 430... Transmission portion 430 a... Transmission circumferential portion 431... Torque transmission surface 431 a. Achieving circumferential surface 432 ... Transmission portion 432a ... Sliding portion 433,433a ... Torque transmission surface 434,434a ... Biasing means 435 ... Screw 436 ... Stopper 437a ... · Sliding surface 438a · · · key groove 44a · · · key 90 · · · upper grip 900 · · · support leg 901 · · · pin hole 91 · · · · leg portion 92 · · · side grip L2 , L3 ... distance

Claims (13)

A lead-in portion arranged to face one side surface of the bathtub side wall;
A retraction operation unit arranged to face the retraction unit;
A movable frame comprising a connecting portion that connects the retracting portion and the retracting operation portion;
A horizontal portion disposed to face the upper surface of the bathtub side wall and directly placed on the upper surface of the bathtub side wall ;
A fixed frame comprising a vertical portion connected to the horizontal portion and arranged to face the other side surface opposite to one side surface of the bathtub side wall; and connected to the retracting operation portion. And the handrail for bathtubs which consists of a moving apparatus which makes the said pull-in operation part approach or separate | separate with respect to the said perpendicular | vertical part.   The moving device moves the retracting operation portion apart from the vertical portion, thereby bringing the retracting portion closer to the vertical portion via the connecting portion, and bringing the retracting operation portion into the vertical portion. 2. The bathtub handrail according to claim 1, wherein the pull-in portion is separated from the vertical portion via the connecting portion by being brought close to each other.   The handrail for a bathtub according to claim 1 or 2, wherein the movable frame is not detached from the fixed frame by connecting the moving device to the vertical portion.   The moving device includes a nut coupled to the retracting operation unit, a bolt shaft screwed with the nut, and a handle knob for rotating the nut or the bolt shaft. The handrail for bathtubs according to any one of claims 1 to 3.   5. The bathtub handrail according to claim 4, wherein the nut is rotatably connected to the retracting operation portion, and the bolt shaft is non-rotatably connected to the vertical portion.   6. The handrail for bathtubs according to claim 5, wherein the handle knob has a storage chamber for accommodating the bolt shaft retracted by rotating the nut inside the handle knob.   Torque transmission / cut-off means is further provided for transmitting the rotational force from the handle knob to the nut when the force is less than a predetermined force, and for interrupting the transmission of the rotational force from the handle knob to the nut at a predetermined force or more. The handrail for bathtubs according to claim 5 or 6, characterized by being.   The handrail for bathtubs according to any one of claims 1 to 7, wherein a separation distance between the retracting portion and the retracting operation portion is adjustable.   The bathtub according to any one of claims 1 to 8, wherein the vertical part includes a contact plate that is swingably attached to the vertical part and that contacts the side wall of the bathtub. Handrail.   9. The bathtub use according to claim 1, wherein the pull-in portion includes a pulling pressure plate that is swingably attached to the pull-in portion and abuts against the bathtub side wall. handrail.   The pressure action point of the suction pressure plate is such that the distance between the pressure action point of the suction pressure plate and the bottom surface of the horizontal part is longer than the distance between the pressure action point of the contact plate and the bottom surface of the horizontal part. The handrail for a bathtub according to claim 10, wherein the handrail is offset with respect to the position of the pressure acting point of the contact plate.   The handrail for a bathtub according to any one of claims 1 to 11, wherein a handrail portion and a leg portion whose end portion is in contact with the floor surface are attached to the vertical portion. .   The said connection part is arrange | positioned above the said horizontal part, and the said movable frame is attached with respect to the said fixed frame so that a swing is possible, The Claim 1 characterized by the above-mentioned. Handrail for bathtub.

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