JP2018019928A - Bathroom chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress generation of rust or corrosion in a mechanism for stopping rotation of an armrest. A bathroom chair (1) includes an armrest (8), a rotating mechanism (hinge pin Q) for rotating the armrest (8) with respect to a frame of the bathroom chair (1), a rod body (84) fixed to the armrest (8), and a rotation member. The restriction member 91 is fixed to a position for receiving the rod body 84 that is rotated by the moving mechanism (hinge pin Q) and is long in the axial direction of the rod body 84. For example, the restriction portion 91 has a recess that is long in the axial direction of the rod body 84 on the surface that receives the rod body 84. For example, in the recessed portion of the restriction portion 91, the shape of the cross section perpendicular to the axial direction corresponds to the shape of the cross section of the rod 84. [Selection diagram] Fig. 7

Description

  The present invention relates to a bathroom chair.

  In general, it is convenient for a sick person, an elderly person, a disabled person, etc. to sit on a chair and wash their body when taking a bath. However, since the bathroom has a relatively small space, it is preferable that the bathroom can be made compact by folding it when the chair is not used. From such a viewpoint, a foldable bathroom chair has been proposed.

  Patent document 1 is disclosing the folding chair which is pivotally supported so that a rear leg can be opened and closed with respect to a front leg, and can be folded compactly when not in use. Furthermore, this folding chair contributes to the improvement of usability and compactness by rotating an armrest with respect to the frame.

JP 2011-50641 A

  However, a metal material is generally used for the frame of the bathroom chair from the viewpoint of mechanical strength. Therefore, depending on the structure of the mechanism that stops the rotation of the armrest and keeps it in use, the metal material may be exposed to the outside, and moisture, soap, and other foreign matters may adhere. When this state continues for a long time, there is a problem that rust or corrosion occurs in the metal material. In this regard, Patent Document 1 does not disclose any specific configuration of the mechanism for stopping the rotation of the armrest.

  An object of this invention is to provide the bathroom chair which suppresses generation | occurrence | production of the rust or corrosion in the mechanism which stops rotation of an armrest.

  In order to achieve the above object, a bathroom chair according to an aspect of the present invention includes an armrest, a rotation mechanism for rotating the armrest with respect to a frame of the bathroom chair, and a bar fixed to the armrest. A body and a position that receives the rod that is rotated by the rotation mechanism are fixed, and includes a restriction portion that is long in the axial direction of the rod.

  The bathroom chair of the present invention can suppress the occurrence of rust or corrosion in the mechanism that stops the rotation of the armrest.

It is a perspective view which shows the use condition of an armrest about the chair for bathrooms which concerns on embodiment. It is a perspective view which shows the raising state of an armrest about the bathroom chair which concerns on embodiment. It is a disassembled perspective view of the bathroom chair which concerns on embodiment. It is an expansion perspective view which abbreviate | omits and shows the bathroom chair which concerns on embodiment. It is a side view which shows the use condition of the bathroom chair which concerns on embodiment, and the use condition of an armrest. It is a side view which shows the storage state of the chair for bathrooms which concerns on embodiment, and the raising state of an armrest. It is a schematic diagram which shows the armrest and the control part seen in the direction of arrow VII of FIG. It is an external view which shows the external appearance of the armrest seen in the direction of the arrow VIII of FIG. It is an expansion perspective view which shows the base part of the armrest in the use condition of the bathroom chair which concerns on embodiment. It is an expansion perspective view which shows the base part of the armrest in the flip-up state of the chair for bathrooms which concerns on embodiment. It is sectional drawing which shows the cross section of the rotation mechanism in the XI-XI sectional line of FIG.

  Hereinafter, the bathroom chair according to the present embodiment will be described with reference to the drawings. Note that each of the embodiments described below shows a preferred specific example of the present invention. Accordingly, the numerical values, shapes, materials, components, component arrangement positions, connection forms, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements. Each figure is a schematic diagram and is not necessarily illustrated strictly.

(Embodiment)
Hereinafter, embodiments of a bathroom chair of the present invention will be described with reference to the drawings. In the following explanation, explanation using the XYZ coordinate axes shown in each drawing may be performed. The positive and negative directions of the Z-axis are referred to as up (upward) and down (downward), respectively. The positive and negative directions of the Y-axis are respectively forward (forward) and backward (backward). ), And the positive and negative directions of the X-axis are sometimes referred to as right (right direction) and left (left direction), respectively.

  A basic configuration of the bathroom chair 1 of the present embodiment will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a state where the armrest 8 of the bathroom chair 1 according to the present embodiment is in a use posture. FIG. 2 is a perspective view showing a state in which the armrest of the bathroom chair 1 according to the present embodiment is in a flip-up posture. FIG. 3 is an exploded perspective view of the bathroom chair 1 according to the present embodiment. FIG. 4 is an enlarged perspective view showing the bathroom chair 1 according to the present embodiment with a part thereof omitted. FIG. 5 is a side view showing the usage state of the bathroom chair 1 and the usage state of the armrest 8 according to the present embodiment. FIG. 6 is a side view showing the storage state of the bathroom chair 1 according to the present embodiment and the raised state of the armrest 8.

  The bathroom chair 1 is attached to a front leg 2, a rear leg 3 pivotally supported by the front leg 2, a seat plate 4 provided over the front leg 2 and the rear leg 3, and an upper end portion of the front leg 2. A backrest 5, a link 6 that connects the seat plate 4 and the rear leg 3 (specifically, a reinforcing rod 36 described later), and an armrest 8 are provided. It is assumed that the bathroom chair 1 is placed on a floor surface parallel to the XY plane.

  The front leg 2 includes a front leg body 21 and a front telescopic leg 22.

  The front leg body 21 is a frame that is bent in a substantially inverted U shape when viewed from the front and is bent in a substantially vertical Z shape when viewed from the side (that is, in the right direction or the left direction). The front leg main body 21 has a horizontal portion substantially parallel to the floor surface. The front telescopic leg 22 is a frame that is slidably inserted into each end of the front leg main body 21. The front leg main body 21 and the front telescopic leg 22 are formed of a rigid member, and more specifically, a metal pipe, for example, an aluminum pipe having excellent rust prevention and light weight.

  Positioning pins 24 are provided near the ends of the front leg main body 21 so as to protrude from the outer peripheral surface via springs 23 (see FIGS. 5 and 6). Further, plastic hinge brackets 25 are fixed to intermediate portions of the horizontal portions facing each other of the front leg main body 21, respectively. Further, a reinforcing rod 26 is welded between the front end portions of the horizontal portions facing each other of the front leg main body 21, and a reinforcing rod 261 is welded between the vicinity of the rear end portions of the horizontal portions. The reinforcing rods 26 and 261 have a function of reinforcing the structure of the front leg main body 21.

  The front telescopic leg 22 has a plurality of positioning holes 22a at predetermined intervals corresponding to the positioning pins 24 provided in the front leg main body 21. Then, by fitting the positioning pin 24 into the positioning hole 22 a, the amount of expansion / contraction of the front telescopic leg 22 relative to the front leg main body 21 can be adjusted, and the front telescopic leg 22 can be fixed to the front leg main body 21.

  A leg rubber 27 having a shape that comes into surface contact with the floor surface in the state of use is attached to the lower end portion of the front telescopic leg 22 and has a function of preventing the washing scene on the floor surface from being damaged or slipping. Have.

  The rear leg 3 includes a rear leg main body 31 and a rear telescopic leg 32. The rear leg main body 31 is a frame bent in a substantially inverted L shape when viewed from the side. The rear leg main body 31 has a horizontal portion that is substantially parallel to the floor surface and a vertical portion that is substantially perpendicular to the floor surface. The rear telescopic legs 32 are frames that are slidably inserted into the lower ends of the rear leg bodies 31. The rear leg main body 31 and the rear telescopic leg 32 are formed of a rigid member, more specifically, an aluminum pipe, like the front leg 2. The rear leg 3 corresponds to the second leg.

  A positioning pin 34 is provided in the vicinity of the lower end of each rear leg main body 31 so as to protrude from the outer peripheral surface via a spring 33 (see FIGS. 5 and 6). The horizontal portion of the rear leg main body 31 is disposed below the horizontal portion of the front leg main body 21 described above, and a hinge bracket 35 is fixed to the front end portion thereof, that is, the front end portion. The hinge bracket 35 supports the hinge bracket 25 fixed to the front leg main body 21 and is connected to the hinge bracket 25 via a hinge pin P. By the connection via the hinge pin P, the pair of left and right rear leg bodies 31 can be rotated around the hinge pin P in conjunction with each other with respect to the front leg body 21.

  For example, the hinge pin P is located at the apex of an isosceles triangle whose base is a line segment connecting between the center of the grounding part of the front leg 2 (center of the leg rubber 27) and the center of the grounding part of the rear leg 3 (center of the leg rubber 37). Set to do.

  In addition, a reinforcing rod 36 is welded between the vicinity of the intersecting portion where the horizontal portion and the vertical portion of the rear leg main body 31 face each other, and the pair of rear legs 3 can be operated in synchronization.

  A plurality of positioning holes 32a are formed in the rear telescopic legs 32 at predetermined intervals corresponding to the positioning pins 34 provided in the rear leg main body 31, and the positioning pins 34 are fitted into the positioning holes 32a. By combining them, the amount of expansion / contraction of the rear telescopic leg 32 relative to the rear leg main body 31 can be adjusted, and the rear telescopic leg 32 can be fixed to the rear leg main body 31. Further, a leg rubber 37 having a shape that comes into surface contact with the floor surface in use is attached to the lower end portion of the rear telescopic leg 32 to prevent the washing scene on the floor surface from being damaged or slipping. It has a function.

  The material of the front legs 2 and the rear legs 3 may be iron or stainless steel in addition to aluminum.

  As shown in detail in FIG. 3, the seat plate 4 includes a seat body 41 and a cushion portion 42. The seat body 41 is a substantially square hollow plastic member. The cushion portion 42 is a foamed plastic cushion member that is formed in a shape that matches the seat body 41 and covers the entire top surface of the seat body 41.

  A plurality of fitting holes 41 a are formed in the seat body 41, while a protrusion 42 a that fits into the fitting hole 41 a of the seat body 41 is formed downward on the back surface of the cushion portion 42. Yes. The cushion portion 42 can be easily attached to and detached from the seat body 41 by fitting and removing the protruding portion 42a of the cushion portion 42 from the fitting hole 41a of the seat body 41. Thereby, it becomes easy to remove the cushion part 42 from the seat main body 41, and to wash | clean or replace | exchange. Further, when the user sits on the seat plate 4, most of the user's buttocks contact the cushion portion 42, that is, the user's buttocks are prevented from contacting a rigid member such as the front leg 2. Therefore, there is an advantage that it is comfortable for the user. In the case where the rigid member such as the front leg 2 is a metal member, there is an advantage that it is suppressed that the user feels cold.

  The seat body 41 and the cushion portion 42 are formed with a plurality of drain holes 2a (see FIG. 1) penetrating both.

  In addition, the seat body 41 is pivotally connected to a reinforcing rod 261 welded between the vicinity of the rear end portions of the opposed horizontal portions of the front leg body 21 described above, at a position near the rear end of the substantially intermediate portion thereof. The rear end of the link 6 is pivotably connected to one end of the link 6, and the other end of the link 6 is welded between the vicinity of the intersection between the horizontal portion and the substantially vertical portion of the rear leg main body 31 described above. The reinforcing rod 36 is rotatably connected.

  Therefore, in FIG. 5, when the front end portion of the seat plate 4 is gripped and lifted, the seat plate 4 rotates clockwise around the shaft support portion (reinforcement rod 261) with the front leg 2 and is stored in a substantially vertical state. can do. At this time, the rear end portion of the seat plate 4 is pivotally supported by one end portion of the link 6, and the other end portion of the link 6 is pivotally supported by the rear leg body 31 (reinforcing rod 36) of the rear leg 3. Then, the seat plate 4 pushes down the rear leg 3 via the link 6 and rotates the rear leg 3 around the hinge pin P in the clockwise direction. For this reason, the rear leg 3 can be approached with respect to the front leg main body 21, and the front leg 2 and the rear leg 3 can be closed (refer FIG. 6).

  On the other hand, in FIG. 6, when the front end portion of the seat plate 4 is grasped and pushed down, the seat plate 4 rotates counterclockwise around the shaft support portion (reinforcement rod 261) with the front leg 2 to reinforce the front leg 2. The rod 26 is supported in a substantially horizontal state. At this time, the seat plate 4 pulls up the rear leg 3 through the link 6, rotates the rear leg 3 counterclockwise around the hinge pin P, separates the rear leg 3 from the front leg body 21, and moves the front leg 2. And the rear leg 3 can be opened (refer FIG. 5).

  As shown in FIG. 3, the backrest 5 includes a backrest main body 51 and a cushion portion 52. The backrest main body 51 is a substantially square hollow plastic member. The cushion portion 52 is a foamed plastic member that is formed in a shape that matches the backrest main body 51 and covers the entire front surface of the backrest main body 51.

  A plurality of fitting holes 51 a are formed in the backrest main body 51, while a protrusion 52 a that can be fitted into the fitting holes 51 a of the backrest main body 51 is formed on the back surface of the cushion portion 52 toward the rear. ing. The cushion portion 52 can be easily attached to and detached from the backrest body 51 by fitting and removing the protruding portion 52a of the cushion portion 52 from the fitting hole 51a of the backrest body 51. Thereby, the cushion part 52 can be easily removed from the backrest main body 51 and cleaned or replaced. In this case, the protruding portion 52a of the cushion portion 52 is fitted with a constant frictional force so as not to easily fall off from the fitting hole 51a of the backrest body 51. Further, when the user sits on the seat plate 4, most of the user's back is in contact with the cushion portion 52, that is, the user's back is prevented from contacting a rigid member such as the front leg 2. Therefore, there is an advantage that it is comfortable for the user. In the case where the rigid member such as the front leg 2 is a metal member, there is an advantage that it is suppressed that the user feels cold.

  In addition, the backrest main body 51 and the cushion part 52 are formed with a gripping hole 5a (see FIG. 1) penetrating both. The user can carry the bathroom chair 1 by inserting a finger into the holding hole 5a.

  The backrest body 51 of the backrest 5 is screwed to the mounting bracket 7 fixed to the horizontal upper end portion of the front leg main body 21 and the horizontal upper end portion of the front leg main body 21.

  The armrest 8 is a frame that is connected to the vicinity of the backrest 5 of the front leg body 21 via a rotation mechanism (such as a hinge pin Q described later) and extends in the forward direction. The armrest 8 is rotated with respect to the front leg main body 21 by a rotation mechanism, so that the armrest 8 is in a use state substantially parallel to the floor surface (see FIG. 1) and a flip-up state substantially perpendicular to the floor surface (see FIG. 2). Can take. The armrest 8 is maintained in a use state by being supported by a restriction portion 91 described later. The armrest 8 functions as an armrest on which the elbow of the user sitting on the bathroom chair 1 is placed.

  The operation of the armrest 8 is independent of the rotation of the seat plate 4. Moreover, in the state where the bathroom chair 1 is used, most of the surface of the armrest 8 may be covered with a cover (see FIG. 1 and the like). The cover has an effect of preventing the armrest body 81 and the like from being scratched, and preventing moisture, soap and other foreign matter from adhering, and the user's skin directly touches the metal member constituting the armrest 8. There is also an advantage that the user can avoid feeling cold. The armrest 8 with the cover removed is shown in FIGS.

  Next, the operation of the bathroom chair 1 configured as described above will be described.

  When the bathroom chair 1 is in the use state shown in FIGS. 1 and 4, the seat plate 4 is pivotally connected to the reinforcing rod 261 of the front leg 2 and is substantially horizontal to the reinforcing rod 26 of the front leg 2. It is supported. Further, the rear leg 3 is opened so as to be separated from the front leg 2, and the leg rubbers 27 and 37 are grounded to the floor surface.

  In this state, the user can sit on the seat plate 4 and wash the body. At this time, since the cushion portions 42 and 52 provided so as to cover the seat main body 41 and the backrest main body 51 come into contact with the user's buttocks and back, the coldness in winter can be alleviated and the sitting comfort can be reduced. good. Also, when the user enters the bathtub, the armrest 8 is in a flipped state. As a result, since there is no obstacle such as an elbow rest on the side of the seat plate 4, the user can enter the bathtub simply by sliding the user's body in the left-right direction. In other words, when the user enters the bathtub, it is not necessary for the user to move the body in the front-rear direction or the up-down direction. Specifically, by arranging the upper surface of the seat plate 4 so as to be continuous at the same height as the upper surface of the bathtub (not shown), the user's collar can be easily transferred from the seat plate 4 to the bathtub wall. Can reduce the burden of work by the caregiver.

  Further, when the use of the bathroom chair 1 is finished, the user grips and lifts the front end portion of the seat plate 4 in FIGS. It rotates clockwise around the shaft support (reinforcing rod 261). At this time, the rear end portion of the seat plate 4 is pivotally supported with one end portion of the link 6, and the other end portion of the link 6 is pivotally supported with the rear leg body 31 (reinforcing rod 36) of the rear leg 3. The seat plate 4 pushes down the rear leg 3 via the link 6, rotates the rear leg 3 clockwise around the hinge pin P, brings the rear leg 3 closer to the front leg body 21, and the front leg 2 and the rear leg 3. Can be closed. In addition, the closed front leg 2 and rear leg 3 are grounded to the floor at the same height, and the substantially vertical seat plate 4 is also disposed between the closed front leg 2 and rear leg 3, so that it is in the retracted state. Even when the front leg 2 and the rear leg 3 are closed, the bathroom chair 1 is self-supporting. As a result, the bathroom chair 1 can be stored in a small space while standing independently (see FIG. 6). In addition, since the operation | movement of the armrest 8 is independent of rotation of the seat board 4 as mentioned above, in FIG. 6, the armrest 8 may take the use state instead of the flip-up state.

  In the retracted state shown in FIG. 6, in a side view, the shaft support portion between one end portion of the link 6 and the seat plate 4 is the shaft support portion (reinforcement rod 36) between the other end portion of the link 6 and the rear leg 3 and the front leg 2. It is on the shaft support part (hinge pin P) side of the front leg 2 and the rear leg 3 beyond the line connecting the shaft support part (reinforcing rod 261) between the seat plate 4 and the seat plate 4. As described above, the shaft support portion (reinforcement rod 261) between the front leg 2 and the seat plate 4, the shaft support portion between the one end portion of the link 6 and the seat plate 4, and the shaft support portion between the other end portion of the link 6 and the rear leg 3. (Reinforcing rod 36) serves as a connection point of a toggle mechanism formed by connecting two links in an L shape. Therefore, depending on the weight of the seat plate 4, the shaft support portion between the one end portion of the link 6 positioned on the shaft support portion (hinge pin P) side of the front leg 2 and the rear leg 3 and the seat plate 4 may be in addition to the link 6. The shaft support portion (reinforcement rod 36) between the end portion and the rear leg 3 and the line segment connecting the shaft support portion (reinforcement rod 261) between the front leg 2 and the seat plate 4 are not exceeded, and the seat plate 4 is in a substantially vertical state. Retained.

  On the other hand, when the bathroom chair 1 is used, when the front end portion of the seat plate 4 is grasped and pushed down in the retracted state, the seat plate 4 rotates counterclockwise around the shaft support portion (reinforcement rod 261) with the front leg 2. Rotate in the direction. That is, by the play of each shaft support portion, the shaft support portion between one end portion of the link 6 located on the shaft support portion (hinge pin P) side of the front leg 2 and the rear leg 3 and the rear end portion of the seat plate 4 is changed to the link 6. It can be located beyond the line connecting the shaft support portion (reinforcement rod 36) between the other end portion of the rear leg 3 and the shaft support portion (reinforcement rod 261) between the front leg 2 and the seat plate 4. Accordingly, the seat plate 4 pulls up the rear leg 3 via the link 6, rotates the rear leg 3 counterclockwise around the hinge pin P, separates the rear leg 3 from the front leg body 21, and moves the front leg 2 and The rear leg 3 can be opened (see FIG. 5).

  With the above configuration, the bathroom chair 1 can stand by itself without slipping by the front legs 2 and the rear legs 3 in the use state, and can stand alone while maintaining the retracted state.

  Hereinafter, the rotation of the armrest 8 and the configuration for maintaining the armrest 8 in the use state, that is, the technology for suppressing the occurrence of rust or corrosion in the mechanism for stopping the rotation of the armrest 8 will be described in detail.

  FIG. 7 is a schematic diagram showing the armrest 8 and the restriction portion 91 viewed in the direction of the arrow VII in FIG. FIG. 8 is an external view showing the external appearance of the armrest 8 viewed in the direction of arrow VIII in FIG. FIG. 9 is an enlarged perspective view showing the base portion of the armrest 8 in the usage state of the bathroom chair 1 according to the present embodiment. FIG. 10 is an enlarged perspective view showing a base portion of the armrest 8 in a state where the bathroom chair 1 according to the present embodiment is flipped up. 7 is a schematic view, and the armrest 8 shown in FIGS. 8 to 10 is in a state in which the cover covering the surface is removed. Therefore, the armrest 8 shown in these drawings is the same as that shown in FIG. Although the shape is different from the armrest 8, the operation and function are the same.

  As shown in FIG. 7, the fixture 9 is fixedly provided in the vicinity of the backrest 5 in the front leg body 21 by, for example, welding. The fixture 9 includes a restricting portion 91 and a through hole 92. The restricting portion 91 is provided at a position for receiving the armrest 8 that rotates (more specifically, a rod 84 described later), and has a function of restricting the rotation range of the armrest 8. The through hole 92 is a hole through which a hinge pin Q described later is inserted. The material of the fixture 9 is a rigid member such as iron or stainless steel. In addition, since the restriction | limiting part 91 is a part which the rod 84 of the armrest 8 contacts, when it is comprised with stainless steel with high intensity | strength, there exists an advantage by which a damage | wound or damage is prevented.

  As shown in FIGS. 7 and 8, the armrest 8 includes an armrest main body 81, side plates 82 and 83, a rod body 84, and through holes 85 and 86. The material of the armrest 8 is a rigid member such as iron or stainless steel.

  The armrest main body 81 is a long plate body on which the user's elbow is placed. The armrest main body 81 may be curved so as to follow the shape of the hand portion from the human elbow (see FIG. 8).

  The side plates 82 and 83 are a pair of plates that are fixedly connected to the two long sides of the armrest body 81. The side plates 82 and 83 are arranged to face each other with a predetermined separation distance. The side plates 82 and 83 may be fixed to the armrest body 81 by welding, for example, or may be formed together with the armrest body 81 by bending one plate body.

  The rod body 84 is fixedly connected to the side plates 82 and 83, respectively, and maintains the structure of the armrest 8 by maintaining the distance between the side plates 82 and 83. Further, the rod body 84 is provided at a position where the armrest 8 hits the restricting portion 91 of the fixture 9 when the armrest 8 rotates, and restricts the turning range of the armrest 8 by hitting the restricting portion 91. The rod body 84 is formed, for example, by welding at both ends thereof to the side plates 82 and 83.

  The through holes 85 and 86 are through holes provided in the side plates 82 and 83, respectively, through which the hinge pins Q are inserted.

  A hinge pin Q is inserted into the through holes 85 and 86 of the armrest 8 and the through hole 92 of the fixture 9, and the armrest 8 is rotated with respect to the fixture 9 via the hinge pin Q. Thereby, the armrest 8 can take the positions and postures of the use state and the flip-up state, and the positions and postures between them. The use state is a state where the armrest 8 is in the position and posture shown by the solid line in FIG. 7, and a perspective view of the base portion of the armrest 8 in the use state is shown in FIG. Moreover, the flip-up state is a state in the position and posture (armrest 8A) indicated by a two-dot chain line in FIG. 7, and a perspective view of the base portion of the armrest 8 in the flip-up state is shown in FIG. .

  When the armrest 8 is in use, the rod body 84 is in contact with the restricting portion 91, and the rod body 84 is regulated by a force (downward force on the paper surface) directed toward the floor surface such as gravity exerted on the armrest 8. The part 91 is pressed. In other words, the restricting portion 91 maintains the armrest 8 at the position and posture in the use state against the force exerted on the armrest 8 toward the floor surface.

  The restricting portion 91 has a shape that is long in the axial direction of the rod body 84, in other words, has a long shape in the axial direction of the rod body 84. Thereby, the regulation part 91 contacts the outer peripheral surface of the rod 84 with a relatively large area, and receives the force exerted through the rod 84 with a relatively large area. Thereby, there exists an advantage by which it is suppressed that an excessive pressure is applied to the surface of the rod 84 and the surface of the control part 91.

  If the fixture 9 and the armrest 8 are in contact with a so-called point or line so that the fixture 9 regulates the rotation range of the armrest 8, the contact area is relatively small. In addition, the paint may peel off or be damaged at the contact portion of the armrest 8. On the other hand, the fixture 9 and the armrest 8 according to the present embodiment regulate the rotation range of the armrest 8 by contact with the surface of the restricting portion 91 and the rod body 84. As a result, there is an effect that it is possible to prevent the paint from peeling off or being damaged due to excessive pressure applied to the contact portion between the restricting portion 91 and the rod 84.

  The restricting portion 91 may have a concave portion that is long in the axial direction of the rod body 84 on the surface that receives the rod body 84. Further, the concave portion of the restricting portion 91 may have a cross-sectional shape perpendicular to the axial direction corresponding to the cross-sectional shape of the rod body 84. Thereby, the contact area of the control part 91 and the rod 84 can be enlarged, and it can suppress further that an excessive pressure is applied to the surface of the control part 91. FIG. Further, the arm 84 can be received at an appropriate position in the restricting portion 91 by fitting the rod body 84 into the recess of the restricting portion 91.

  Further, the rod body 84 has a circular cross-sectional shape perpendicular to the axial direction, and the concave portion of the restricting portion 91 has a cross-sectional shape perpendicular to the axial direction corresponding to the circular shape of the rod body 84. May be. Thus, a mechanism for stopping the rotation of the armrest 8 more simply and concretely is realized by using the rod body 84 which is a cylindrical body (so-called round bar) and the concave portion having a shape matching the cylindrical body. Can do. In addition, the shape of the cross section perpendicular | vertical to the axial direction of the rod 84 is not limited to said circular shape, Arbitrary shapes, such as a polygon shape or the combination of polygon diameter shape and circular shape, are employable. it can. Here, when the cross-sectional shapes of the rod body 84 and the concave portion are a circular shape and a shape that matches the circular shape, respectively, compared to the case where these are a polygonal shape and a shape that matches the polygonal shape, Since the soap and other foreign matters are less likely to adhere to the polygonal recesses, etc., there is an advantage that the fitting between the rod 84 and the recess is less likely to be hindered.

  Hereinafter, a technique for adjusting the weight of rotation when the armrest 8 rotates will be described. Here, the weight of rotation means the magnitude of the resistance force acting on the armrest 8 to be rotated, and more specifically, the magnitude of the frictional resistance acting on the contact surface between the armrest 8 and the fixture 9. Means.

  FIG. 11 is a cross-sectional view showing a cross section of the rotation mechanism taken along the line XI-XI in FIG.

  As shown in FIG. 11, the rotation mechanism is realized by a hinge pin Q inserted through the through hole 92 of the fixture 9 and the through holes 85 and 86 of the side plates 82 and 83 of the armrest 8. The hinge pin Q connects the fixture 9 and the side plates 82 and 83 so as to be rotatable. The hinge pin Q is fixed by a nut R. The hinge pin Q and the nut R function as a fastener that fastens the fixture 9 and the side plates 82 and 83. By adjusting the strength of fastening by the nut R, the force with which the fixture 9 and the side plates 82 and 83 press each other is adjusted, so that the frictional force acting between the fixture 9 and the side plates 82 and 83 is reduced. Adjusted. The hinge pin Q and the nut R may fasten the cover 95 and the washer 96 together when fastening the fixture 9 and armrest 8 described above.

  Here, it is difficult to adjust the fastening strength by the nut R to an appropriate strength and to maintain the adjusted strength. The strength is determined by, for example, the fastening strength when the bathroom chair 1 is assembled, but can be easily changed by the user of the bathroom chair 1 tightening or loosening the nut R thereafter.

  Therefore, the bathroom chair 1 has a spacer S that regulates the fastening strength of the nut R. The spacer S defines the separation distance between the side plates 82 and 83 when the side plates 82 and 83 and the fixture 9 are fastened by the hinge pin Q and the nut R. In other words, the spacer S regulates the fastening strength between the side plates 82 and 83 and the fixture 9 to be a predetermined level or less. The position where the spacer S is arranged and the function of the spacer S defining the separation distance will be described in detail with reference to FIG.

  As shown in FIG. 11, the fixture 9 includes a cover 93 and a fixture body 94. The cover 93 is a cover that covers the surface of the fixture main body 94. The material of the cover 93 is a flexible material such as a synthetic resin. The fixture main body 94 is fixedly provided on the front leg main body 21. The material of the fixture main body 94 is a rigid member, for example, a metal such as iron, aluminum, or stainless steel.

  When the side plates 82 and 83 and the fixture 9 are fastened by the hinge pin Q and the nut R, the side plates 82 and 83 and the cover 93 come into surface contact and are pressed against each other. When the armrest 8 rotates with respect to the fixture 9 in this state, a frictional resistance force corresponding to the pressing force between the side plates 82 and 83 and the cover 93 is generated in a direction that prevents the rotation.

  The spacer S is a cylindrical body provided at a position surrounding the hinge pin Q. The length of the spacer S in the axial direction is substantially the same as the distance between the side plates 82 and 83 when the side plates 82 and 83 and the fixture 9 are fastened by the hinge pin Q and the nut R. The spacer S regulates the pressing force between the side plates 82 and 83 and the cover 93 by regulating the distance between the side plates 82 and 83 so that the side plates 82 and 83 and the cover 93 can be separated from each other. Restrict the working frictional resistance so that it does not exceed a predetermined level. This restriction is adjusted by the length of the spacer S in the axial direction.

  Therefore, when the side plates 82 and 83 and the fixture 9 are fastened by the hinge pin Q and the nut R in the state where the spacer S is present, the fastening strength of the hinge pin Q and the nut R is restricted so as not to exceed a predetermined value. Thus, the frictional resistance is prevented from exceeding a predetermined value. Thus, the spacer S can adjust the weight of rotation of the armrest 8 based on the axial length.

  As described above, the bathroom chair 1 and the like in the present embodiment are fixed to the armrest 8, the rotation mechanism (such as the hinge pin Q) that rotates the armrest 8 with respect to the frame of the bathroom chair 1 and the like, and the armrest 8. The bar 84 is fixed to a position for receiving the bar 84 that is rotated by a rotation mechanism (such as the hinge pin Q), and a restriction portion 91 that is long in the axial direction of the bar 84 is provided.

  According to this, the contact area between the rod 84 and the restricting portion 91 can be made relatively wide. More specifically, point contact between the outer peripheral surface of the rod 84 and the surface of the restricting portion 91 is avoided, and the contact portion can be widened by being line contact or surface contact. Thereby, it is suppressed that an excessive pressure is applied to the outer peripheral surface of the rod 84 and the surface of the restricting portion 91, and it is possible to prevent the paint from peeling off or being damaged. As a result, the bathroom chair 1 can suppress the occurrence of rust or corrosion in the mechanism that stops the rotation of the armrest 8.

  For example, the restricting portion 91 has a recess that is long in the axial direction of the rod 84 on the surface that receives the rod 84.

  According to this, when the restricting portion 91 receives the rod body 84 by the recessed portion, the contact area between the rod body 84 and the restricting portion 91 can be made wider than in the case where there is no recessed portion. As a result, the bathroom chair 1 can further suppress the occurrence of rust or corrosion in the mechanism that stops the rotation of the armrest 8.

  For example, the concave portion of the restricting portion 91 has a cross-sectional shape perpendicular to the axial direction corresponding to the cross-sectional shape of the rod body 84.

  According to this, when the restricting portion 91 receives the rod body 84 by the concave portion having a shape corresponding to the cross-sectional shape of the rod body 84, the contact area between the rod body 84 and the restricting portion 91 can be further increased. As a result, the bathroom chair 1 can further suppress the occurrence of rust or corrosion in the mechanism that stops the rotation of the armrest 8.

  For example, the rod body 84 has a circular cross-sectional shape perpendicular to the axial direction, and the concave portion has a cross-sectional shape perpendicular to the axial direction corresponding to the circular shape of the rod body 84.

  According to this, the rust in the mechanism that easily stops the rotation of the armrest 8 by the rod 84 having a circular cross-section, that is, the round bar and the concave portion having a shape corresponding to the outer peripheral surface of the round bar. Or generation | occurrence | production of corrosion can be suppressed.

  For example, the rotation mechanism has a fixing tool 9 fixed to the frame having a through-hole through which a fastener (hinge pin Q) is inserted, and the armrest 8 is disposed at a position where the fixing tool 9 is sandwiched. A pair of side plates 82 and 83, each having side plates 82 and 83 each having a through hole through which a fastener (hinge pin Q) is inserted, and the rotation mechanism further includes a fastener (hinge pin Q). ) Has a spacer S that defines the distance between the side plates 82 and 83 when the side plates 82 and 83 and the fixture 9 are fastened.

  According to this, since the strength of fastening between the armrest 8 and the fixture 9 is defined by the spacer S, the magnitude of the frictional resistance acting on the contact surface between the armrest 8 and the fixture 9 to be rotated is reduced. It is regulated so as not to exceed a predetermined value (in other words, less than a predetermined value). As a result, the bathroom chair 1 can suppress the occurrence of rust or corrosion in the mechanism that stops the rotation of the armrest 8 and can adjust the weight of the rotation when the armrest 8 rotates.

  For example, the spacer S is a cylinder provided at a position surrounding the fastener (hinge pin Q), and the axial length of the spacer S is determined by the side plates 82 and 83 and the fixture 9 by the fastener (hinge pin Q). Is substantially the same as the distance between the side plates 82 and 83 when.

  According to this, since the length of the spacer S in the axial direction is a separation distance between the pair of plate bodies in a state where the armrest 8 and the fixture 9 are appropriately fastened, fastening by the fastener is constant. It is suppressed that it becomes more than the intensity of. In addition, since the spacer S surrounds the fastener, the fastening strength between the armrest 8 and the fixture 9 is defined uniformly over the entire circumference of the spacer S. Thereby, the weight of rotation when the armrest 8 rotates can be adjusted more appropriately.

(Other)
As mentioned above, although the bathroom chair which concerns on this invention was demonstrated based on the said embodiment, this invention is not limited to said embodiment.

  In addition, it is realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, and forms obtained by making various modifications conceived by those skilled in the art to each embodiment. Forms are also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Bathroom chair 2 Front leg 3 Rear leg 4 Seat plate 8, 8A Armrest 9 Fixture 82, 83 Side plate 84 Rod body 91 Restriction part 92, 85, 86 Through-hole P, Q Hinge pin S Spacer

Claims (6)

A bathroom chair with armrests,
A rotation mechanism for rotating the armrest with respect to the frame of the bathroom chair;
A rod fixed to the armrest;
A bathroom chair provided with a restricting portion that is fixed in a position to receive the rod body rotated by the rotation mechanism and is long in the axial direction of the rod body. The bathroom chair according to claim 1, wherein the restricting portion has a concave portion that is long in an axial direction of the rod body on a surface that receives the rod body. The bathroom chair according to claim 2, wherein the concave portion of the restricting portion has a shape in which a cross section perpendicular to the axial direction corresponds to a cross sectional shape of the rod body. The rod body has a circular cross-sectional shape perpendicular to the axial direction,
The bathroom chair according to claim 3, wherein the recess has a shape in which a cross-sectional shape perpendicular to the axial direction corresponds to a circular shape of the rod. The rotation mechanism is
Having a through-hole through which a fastener is inserted, having a fixture fixed to the frame;
The armrest is
A pair of plates disposed at positions to sandwich the fixture, each of the pair of plates having a through-hole through which the fastener is inserted;
The turning mechanism further includes:
The bathroom chair according to any one of claims 1 to 4, further comprising a spacer that defines a distance between the pair of plate bodies when the pair of plate bodies and the fixture are fastened by the fastener. . The spacer is a cylinder provided at a position surrounding the fastener,
The bathroom according to claim 5, wherein a length of the spacer in the axial direction is substantially the same as a distance between the pair of plate bodies when the pair of plate bodies and the fixture are fastened by the fastener. Chair.

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