JP2013215598A - Portable toilet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable toilet capable of finely adjusting the height by steplessly lifting and lowering an arm rest.SOLUTION: A portable toilet includes a portable toilet body 2, armrests 3 provided in the portable toilet body 2, and a lifting and lowering mechanism for lifting and lowering the armrest 3.

Description

  The present invention relates to a portable toilet.

  As a toilet bowl mainly used for nursing care, for example, there is a portable toilet A as seen in Patent Document 1. As shown in FIG. 14, this portable toilet A is composed of a chair-type portable toilet body 2 formed by providing a toilet seat 1 on the upper surface, and armrests 3 are provided on both sides of the portable toilet body 2. .

  The armrest 3 is necessary for stabilizing the sitting posture of a person seated on the toilet seat 1, and the armrest 3 is also necessary for supporting the body when standing up from the toilet seat 1 or sitting on the toilet seat 1. .

  On the other hand, this type of portable toilet A mainly used for nursing care is often used beside a bed. Then, when a person sleeping on the bed sits down to use the portable toilet A, he sits on the side of the bed and moves the butt so as to slide sideways from the bed to the toilet seat 1 of the portable toilet A. When moving to the portable toilet seat A and returning to the bed from the portable toilet A, the transfer to the bed is performed by moving the buttocks sideways from the toilet seat 1 to the bed. If this is done, transfer can be easily performed with an easy operation of side-slip movement of the buttocks.

  In this way, when the butt is moved sideways and seated on the portable toilet A or returned to the bed, the butt is moved through the side of the portable toilet A. Of the armrests 3, the armrest 3 on the bed side obstructs the transfer operation.

  However, in the above-mentioned Patent Document 1, the armrest 3 is fixed to the portable toilet body 2 by screws, and the armrest 3 is seated on the portable toilet A every time it is moved to return to the bed. It is difficult to remove and attach the stool, and it is practically impossible to move the buttocks to the sides and to sit on the portable toilet A or to return to the bed.

  On the other hand, in the portable toilet of patent document 2, the armrest 3 is formed so that raising / lowering is possible. That is, the flat cylindrical guide member 23 shown in FIG. 15 is fixed to the side surfaces on both sides of the portable toilet body 2, and the cylindrical armrest base 24 provided with the armrest 3 at the upper end is slidable up and down in the guide member 23. It is attached. The armrest base 24 is provided with openings 25 at a plurality of positions at upper and lower portions at predetermined intervals, and a lever 26 is provided at the upper end of the armrest base 24. Further, a constrained member 28 provided with a recess 27 at a position corresponding to the opening 25 is inserted into and inserted into the armrest base 24, and the constrained member 28 is elastically biased upward and downward by a spring 29. As shown in FIG. 15, a stopper 31 that is elastically urged and repelled by the spring 30 is inserted into the opening 25 of the armrest base 24.

  In this case, in a state where the restrained member 28 is moved upward by being elastically urged and repelled by the spring 29, each concave portion 27 of the restrained member 28 is provided with each opening of the armrest base 24 as shown in FIG. The stopper 31 is inserted deeply into the opening 25 so as to fit into the recess 27, and the stopper 31 is engaged with the opening 25. Accordingly, in this state, the arm 31 is locked by the stopper 31, and the armrest base 24 cannot slide up and down in the guide member 23, and the armrest 3 can be fixed at a predetermined height.

  Next, when the lever 26 is pulled up in the state of FIG. 16A, the restrained member 28 is pushed down against the spring 29 as shown in FIG. In this state where the restrained member 28 is moved downward, as shown in FIG. 16B, the concave portions 27 of the restrained member 28 are positioned between the openings 25 of the armrest base 24, and the openings 25. Is closed by the restrained member 28, the stopper 31 is pushed out against the spring 30, and the engagement of the stopper 31 with the opening 25 is released. Therefore, in this state, the lock is released, and the armrest base 24 can be slid up and down in the guide member 23. After the armrest 3 is moved up and down to a predetermined height and then the lever 26 is lifted up, the spring 26 is released. The restrained member 28 is moved upward by the elastic urging force of 29, and the stopper 31 is engaged with the opening 25 as in FIG. 16A, and the armrest 3 is fixed at a position where it is raised and lowered to a predetermined height. It is something that can be done.

JP 2008-206694 A JP 2006-87461 A

  Since the armrest 3 can be fixed at a position where the armrest 3 is raised and lowered to a predetermined height as described above, the armrest 3 is obstructed by lowering the armrest 3 as much as possible. Thus, the user can perform the operation of sliding the hips without being moved, and can easily transfer to the portable toilet A or to return to the bed.

  And it exists in the thing of patent document 2, Comprising: The armrest 3 can be fixed to the height position which raised / lowered the armrest base 24 by engaging the stopper 31 with the opening 25 provided in the upper and lower sides at predetermined intervals. The height of the armrest 3 can also be adjusted.

  However, it is necessary that the height of the armrest 3 can be finely adjusted according to the size of the body of the person using the portable toilet A. On the other hand, in the thing of patent document 2, since the height which can fix the armrest 3 is specified by the position of the opening 25, the height adjustment of the armrest 3 can be performed only in steps, and is portable. The height of the armrest 3 could not be finely adjusted in accordance with the size of the body of the person using the toilet A, and there was a problem in usability.

  The present invention has been made in view of the above points, and can easily perform a transfer operation by sliding the hips from the side in a state where the armrest is lowered, and the armrest can be lifted and lowered steplessly. An object of the present invention is to provide a portable toilet capable of finely adjusting the height.

  The portable toilet according to the present invention includes a portable toilet body 2, an armrest 3 provided on the portable toilet body 2, and a lifting mechanism that lifts and lowers the armrest 3 steplessly. is there.

  By doing in this way, the height of the armrest 3 can be finely adjusted.

  In addition, it is preferable that the armrest 3 is automatically released when a force for raising the armrest 3 is applied in a state where the armrest 3 is fixed at an arbitrary height position.

  Moreover, it is preferable to provide the operation button 12 for releasing the fixation of the armrest 3 in a state where the armrest 3 is fixed at an arbitrary height position.

  According to the present invention, the height of the armrest 3 can be finely adjusted. Further, by lowering the armrest 3 to the lowermost end, the armrest 3 can be slid from the side without disturbing the armrest 3. The transfer operation can be easily performed.

An example of embodiment of this invention is shown, (a) (b) is sectional drawing which shows the raising / lowering mechanism of an armrest, respectively. It is a perspective view which shows the whole portable toilet same as the above. The whole portable toilet same as the above is shown, (a) is a side view with the armrest raised to the upper end position, and (b) is a side view with the armrest lowered to the lower end position. It is a perspective view which shows an armrest and a support | pillar. (A) is a perspective view of the state which removed the armrest from FIG. 4, (b) is a perspective view of the state which removed the fixed cylinder from FIG. 5 (a). (A) is a perspective view of the state which removed the armrest from FIG.5 (b), (b) is the one part expanded perspective view of the state which excluded a part of slide block of Fig.6 (a). FIG. 5 is a partially broken enlarged view of the upper end portion of FIG. 4. It is a perspective view of an example of a chain type clamp. An example of a chain type clamp tool is shown, (a) and (b) are front views, respectively, and (c) is a front view of a link plate. The armrest is shown, (a) is a perspective view from the upper surface side, (b) is a perspective view from the lower surface side. It is the schematic which shows another example of a chain type clamp tool. It is a perspective view which shows the pin of another example of a chain type clamp tool. It is a schematic sectional drawing which shows another example of a chain type clamp tool. It is a perspective view which shows the portable toilet bowl of a prior art example. It is a disassembled perspective view which shows the raising / lowering mechanism of the armrest of a prior art example. FIG. 1 shows a conventional armrest lifting mechanism, and (a) and (b) are cross-sectional views, respectively.

  Embodiments of the present invention will be described below.

  FIG. 2 shows an example of the portable toilet A of the present invention. The portable toilet body 2 is provided with a leg 36 on the lower surface of a box-shaped toilet bowl outer body 35 and a backrest 16 on the back of the toilet bowl outer body 35. And the toilet seat 1 is provided on the upper surface of the toilet bowl body 35 to form a chair shape. On the lower side of the toilet seat 1, an excrement receiving container (not shown) is removably accommodated in the toilet casing 35, and the excrement of a person who sits on the toilet seat 1 and adds up is used. To be able to receive. Further, on the back side of the toilet seat 1, a local cleaning device 37 is provided in the toilet bowl outer body 35 so that the local area of the person who has used it can be cleaned.

  The backrest 16 is composed of a backrest column 39 erected on the rear end portion of the toilet bowl body 35 and a backrest cushion 40 provided on the upper end portion of the backrest column 39. Further, a fixed column 41 is erected by fixing the lower end portions on both side surfaces of the toilet casing 35, and a fixed armrest 17 is attached between the upper end of the fixed column 41 and the side surface of the backrest column 39. There are fixed armrests 17 on both sides of the rear part of the portable toilet body 2.

  The armrest 3 is disposed on the front side of the fixed armrest 17 and is provided on both sides of the front portion of the portable toilet body 2. The armrest 3 is attached to the portable toilet body 2 by a column 42 having an elevating mechanism composed of a fixed cylinder 4 and a movable cylinder 5.

  The fixed cylinder 4 is formed of a vertically long cylinder that opens up and down, and a pair of upper and lower fixtures 43 are attached to the side surfaces thereof as shown in FIGS. Each fixing tool 43 is provided with a screw hole 44, and the fixing cylinder 4 is attached to both side surfaces of the toilet bowl body 35 of the portable toilet body 4 by screwing the screw into the screw hole 44. It is. Of the pair of upper and lower fixtures 43, the upper fixture 43 is provided with a stopper piece 45 that protrudes through a hole provided in the fixed barrel 4 as shown in FIG. 4 is projected to the inner periphery. The opening at the lower end of the fixed cylinder 4 is closed with a cap 46, but a shaft support block 47 is fixed in the lower end portion of the fixed cylinder 4 with a screw 48. The shaft 6 is erected vertically in the fixed cylinder 4 by the shaft support block 47. As shown in FIG. 1, the lower end of the shaft 6 is fixed to the shaft support block 47, and the upper end is disposed at the center of the fixed cylinder 4 with the free upper end as a free end.

  The movable cylinder 5 is formed by a vertically long cylinder that opens upward and downward, and is formed in a concentric shape having an outer diameter smaller than the inner diameter of the fixed cylinder 4. A pair of armrest mounting brackets 51 are fixed to the outer surface of the upper end of the movable cylinder 5 as shown in FIG. 5B, and the armrests 3 are mounted to the upper end of the movable cylinder 5 by the armrest mounting brackets 51.

  A slide block 52 is attached to the lower end of the movable cylinder 5 as shown in FIG. The slide block 52 is formed in a cylindrical shape, and is formed by combining a pair of semi-cylindrical block halves 52a as shown in FIG. The upper portion of the slide block 52 is inserted into the lower end portion of the movable cylinder 5 and fixed with a screw 53. The lower end portion of the slide block 52 protrudes downward from the movable cylinder 5, and the lower end portion of the slide block 52 that protrudes downward from the movable cylinder 5 projects outward from the outer periphery of the movable cylinder 5 to form a slide portion 54. A roller 55 is provided on the slide portion 54.

  In the slide block 52, the chain type clamp 10 is attached as shown in FIG. The chain type clamp device 10 is formed using a chain 9 used in a chain transmission device. That is, one end of another set of link plates 7 is rotatably connected to one end of a pair of link plates 7 arranged in parallel by pins 8 and each pair of link plates 7 is connected by pins 8. Then, one end of the other set of link plates 7 is rotatably connected to the other end of the set of link plates 7 by pins 8 and each pair of link plates 7 is connected to each other by the pins 8. Similarly, a chain 9 can be formed by rotatably connecting a plurality of link plates 7 with pins 8. Then, when this chain 9 is bent in a zigzag shape so that the adjacent link plates 7 have a “<” shape, as shown in FIG. 8, a pair of parallel link plates 7 and pins 8 at both ends of the link plate 7 The space surrounded by is continuous in a straight line. That is, as for the pins 8 connecting the link plates 7, every other one and every other pin are arranged in a straight line and in parallel, and the space between the every other pin 8 communicates in a straight line. Is formed.

  The chain type clamp device 10 formed by bending the chain 9 in a zigzag shape in this manner is arranged vertically inside the slide block 52 and connects the link plate 7 at the lower end of the chain type clamp device 10. The plate 56 is attached to the slide block 52. Therefore, the upper end of the chain type clamp tool 10 is in a free state. By inserting the slide block 52 with the chain clamp device 10 mounted in this way into the lower end portion of the movable cylinder 5 as described above, the chain clamp tool 10 is attached to the lower end of the movable cylinder 5 as shown in FIG. It can be installed inside the unit.

  In addition, a clamp release tool 11 is attached to the movable cylinder 5. The clamp release tool 11 is formed with an operation button 12 and a pressing rod 13, and the pressing rod 13 is formed by a cylindrical body having a smaller diameter than that of the movable cylinder 5. As shown in FIG. 7, the operation button 12 is formed by projecting a shaft portion 59 on the lower surface of a disc-shaped holding plate 58, and a locking projection 60 is formed on the outer surface of the middle portion of the shaft portion 59. Projected. The operation button 12 is fixed to the upper end of the pressing rod 13 by inserting and fitting the shaft portion 59 below the locking projection 60 into the upper end opening of the pressing rod 13. A cylindrical pressure slider 61 is attached to the lower end of the pressure bar 13 as shown in FIGS. 1 and 6B. The outer diameter of the pressing slider 61 is substantially equal to the inner diameter of the upper portion of the slide block 52, and the inner diameter is formed to be substantially equal to the outer diameter of the shaft 6.

  A guide cylinder 62 is attached to the inner periphery of the upper end of the movable cylinder 5, and the pressing rod 13 is inserted into the movable cylinder 5 through the inner periphery of the guide cylinder 62. When the pressing rod 13 is thus inserted into the movable cylinder 5 and attached, the pressing slider 61 provided at the lower end of the pressing rod 13 is placed in the upper portion of the slide block 52 as shown in FIGS. 1 and 6B. The lower end of the pressing slider 61 is arranged close to the upper end of the chain-type clamp 10 in the slide block 52. Further, as shown in FIG. 7, a lower locking projection 63 protrudes from the lower end portion of the inner periphery of the guide cylinder 62, and between the lower locking projection 63 and the locking projection 60 of the operation button 12. Is provided with a coil spring 64. Accordingly, when the operation button 12 is pushed down and moved against the spring 64, the pressing rod 13 moves down in the movable cylinder 5 together with the operation button 12, and when the force pushing the operation button 12 is released, the elastic force of the spring 64 is released. The operation button 12 is moved upward by the repelling force, and the pressing rod 13 is also moved upward in the movable cylinder 5.

  The movable cylinder 5 is inserted into and inserted into the fixed cylinder 4 from the opening at the upper end. Thus, with the movable cylinder 5 inserted into the fixed cylinder 4, a cylindrical guide is provided at the upper end of the fixed cylinder 4. A bush 67 is attached. The inner diameter of the guide bush 67 is substantially equal to the outer diameter of the movable cylinder 5, and the outer diameter of the slide portion 54 of the slide block 52 attached to the lower end of the movable cylinder 5 is substantially equal to the inner diameter of the fixed cylinder 4. Accordingly, the outer peripheral surface of the movable cylinder 5 slides in close contact with the inner peripheral surface of the guide bush 67, and the outer peripheral surface of the slide portion 54 of the slide block 52 slides in close contact with the inner peripheral surface of the outer cylinder 4. In this state, the movable cylinder 5 can be slid up and down smoothly without rattling.

  When the movable cylinder 5 is thus inserted into the fixed cylinder 4, at the same time, the shaft 6 is inserted into the slide block 52 at the lower end of the movable cylinder 5 from the lower end, and further into the pressing rod 13 of the clamp release tool 11. The shaft 6 is inserted through the pressing slider 61 at the lower end. At this time, as shown in FIG. 6 (b), the shaft 6 is inserted into the space in the chain clamp device 10 in the slide block 52 so as to penetrate from the lower end to the upper end.

  Here, in the state where the chain-type clamp 10 is folded and the zigzag angle is small, the angle θ formed by the adjacent link plates 7 is small as shown in FIG. Thus, the inclination angle of the link plate 7 becomes small. Further, when the chain clamp 10 is stretched and the zigzag angle is large, the angle θ formed by the adjacent link plates 7 is large as shown in FIG. 9B, as shown in the lower diagram of FIG. 9C. In addition, the inclination angle of the link plate 7 increases. And the internal dimension W2 in the horizontal direction (direction perpendicular to the longitudinal direction of the shaft 6) of the adjacent pins 8 when the inclination angle of the link plate 7 is large as shown in the lower diagram of FIG. When the inclination angle of the link plate 7 is small as shown in the upper diagram of FIG. 9C, the adjacent pin 8 is smaller than the internal dimension W1 in the horizontal direction (direction perpendicular to the longitudinal direction of the shaft 6). Become. Here, the width dimension W of the shaft 6 is formed to be the same dimension as W2.

  As described above, the support column 42 having the lifting mechanism can be formed as shown in FIG. 1, and both sides of the toilet outer body 35 of the portable toilet body 2 by the fixing tool 43 provided on the fixed cylinder 4. The armrests 3 can be provided on both sides of the portable toilet body 2 as shown in FIG.

  The armrest 3 is attached to the upper end portion of the movable cylinder 5 by the pair of armrest mounting brackets 51 provided at the upper end portion of the movable cylinder 5 as described above. That is, as shown in FIG. 5, the armrest mounting bracket 51 is formed in a L-shaped cross section from a vertical piece 70 and a horizontal piece 71 provided to project outward from the lower end of the vertical piece 70. A guide cutout 72 is provided on the outer edge of 71. A long concave portion 73 is formed in the lower portion of the armrest 3 so as to open downward along the longitudinal direction of the armrest 3 on the lower surface of the armrest 3. A button hole 14 is formed. Then, as shown in FIG. 10B, the armrest is placed on the horizontal piece 71 of the armrest mounting bracket 51 with the upper end of the movable cylinder 5 and the vertical piece 70 of the armrest mounting bracket 51 inserted from the lower side into the long recess 73. In this state, the armrest 3 can be fixedly attached to the upper end portion of the movable cylinder 5 by screwing the screw 77 into the armrest 3 through the screw hole 75 of the horizontal piece 71 in this state. When the armrest 3 is attached to the movable cylinder 5 as described above, the operation button 12 of the clamp release tool 11 is received in the button hole 14 as shown in FIGS. 7 and 10A. Yes.

  Reference numeral 15 denotes a shutter, which is formed in a U-shaped cross-section with an open bottom surface, and is fitted into the armrest 3 from above. Locking guide pieces 76 are provided at the lower ends of both sides of the shutter 15 so as to protrude inward. The lock guide pieces 76 are locked to the lower surface of the armrest 3. 10B, the locking guide piece 76 is positioned in the guide cutout 72 of the lateral piece 71 of the armrest mounting bracket 51, and the lock guide piece 76 slides in the guide cutout 72. In such a range, the shutter 15 is slidable in the front-rear direction along the longitudinal direction of the armrest 3. By sliding the shutter 15 in this way, the upper surface opening of the button hole 14 accommodating the operation button 12 is closed as shown in FIG. 2, or the button hole 14 is closed as shown in FIG. 7 and FIG. The upper surface opening can be opened.

  In the portable toilet A of the present invention formed by providing armrests 3 on both sides of the portable toilet body 2 as described above, when the movable cylinder 5 is pulled up to the upper limit and the armrest 3 is raised to the uppermost position, 2 and 3 (a), the armrest 3 is aligned with the fixed armrest 17, and the armrest 3 is positioned on the front side of the fixed armrest 17, so that the armrest 3 and the fixed armrest 17 are moved back and forth. It is made to be continuous. At this time, as shown in FIG. 1 (b), the slide portion 54 of the slide block 52 provided at the lower end portion of the movable cylinder 5 is locked to the stopper piece 45 of the fixture 43 attached to the fixed cylinder 4. Therefore, the upper limit position of the movable cylinder 5 is regulated.

  As described above, since the armrest 3 and the fixed armrest 17 are integrated continuously in the front-rear direction, a person who sits on the toilet seat 1 of the portable toilet body 2 and uses the armrest 3 straddles the fixed armrest 17 from the armrest 3. The arm can be hung and the weight can be hung on both the armrest 3 and the fixed armrest 17. For this reason, even if the armrest 3 is supported by the single column 42 composed of the fixed cylinder 4 and the movable cylinder 5, an excessive load is not applied to the armrest 3, and the elbow can be stably applied. Is. In addition, the armrest 3 is formed with a short length in the front-rear direction so that the armrest 3 is stably supported by a single support 42 without wobbling back and forth, but between the armrest 3 and the backrest 16. By providing the fixed armrest 17 on the base plate, it is possible to prevent a large gap from being formed between the armrest 3 and the backrest 16.

  When weight is applied to the armrest 3 with the armrest 3 raised as described above and a force that moves the movable cylinder 5 downwards is applied, the lower end of the chain-type clamp 10 is moved by the downward movement of the movable cylinder 5. A force to be pulled down via the connecting plate 56 acts on the link plate 7 as indicated by the arrow B in FIG. Then, due to the sliding resistance of the pin 8 of the chain clamp 10 with respect to the shaft 6 inserted through the chain clamp 10, the chain clamp 10 is stretched and the zigzag angle θ of the link plate 7 is increased. The internal dimension W2 of the adjacent pins 8 in the horizontal direction (direction perpendicular to the longitudinal direction of the shaft 6) is the same as the width dimension W of the shaft 6. When the internal dimension W2 of the adjacent pins 8 in the horizontal direction becomes the same as the width dimension W of the shaft 6, the shaft 6 is clamped between the adjacent pins 8 of the chain type clamp device 10, and the shaft The chain-type clamp device 10 is clamped to 6. Therefore, the chain-type clamp 10 cannot be moved down along the shaft 6, the movable cylinder 5 cannot be moved down, and the armrest 3 is not lowered. For this reason, the armrest 3 can be used in a state where the armrest 3 is lifted and the armrest 3 is hung.

  Next, when the armrest 3 is lowered to the lowermost end so that it can be easily moved from the side of the portable toilet body 2 by sliding the buttocks, first as shown in FIG. The shutter 15 is slid rearward to open the upper surface of the button hole 14 as shown in FIGS. 7 and 10A, and the operation button 12 of the clamp release tool 11 is pushed down against the spring 64. Then, the pressing rod 13 moves downward in the movable cylinder 5 by the downward movement of the operation button 12, and the link plate 7 at the upper end of the chain type clamp tool 10 is moved downward at the lower end of the pressing slider 61 provided at the lower end portion of the pressing rod 13. Pressed down. When the upper end of the chain type clamp device 10 is pressed downward in this way, the chain type clamp device 10 is extended from a state where the zigzag angle θ is large as shown in FIG. 9B, as shown in FIG. 9A. The zigzag angle θ is in a folded state. When the zigzag inclination angle of the link plate 7 is thus reduced, the internal dimension W1 of the adjacent pins 8 in the horizontal direction (direction perpendicular to the longitudinal direction of the shaft 6) is larger than the width dimension W of the shaft 6. Thus, the state in which the shaft 6 is clamped between the adjacent pins 8 is released, and the clamp of the chain-type clamp 10 on the shaft 6 is released. Accordingly, when the movable cylinder 5 is pushed down in such a state that the operation button 12 is pushed down to release the clamp of the chain type clamp tool 10, the chain type clamp tool 10 is attached to the shaft 6 as shown by the arrow A in FIG. The movable cylinder 5 can be moved downward along the fixed cylinder 4, and the armrest 3 can be lowered.

  In this way, one side of the portable toilet body 2 can be opened by lowering the armrest 3 to the lowest end of the same level as the toilet seat 1 as shown in FIG. Thus, it is possible to easily carry out the transfer operation by sliding the buttocks from the side of the portable toilet body 2.

  Next, when the movable cylinder 5 is pulled up and moved upward, a pulling force acts on the link plate 7 at the lower end of the chain clamp 10 as shown by the arrows in FIGS. 9 (a) and 9 (b). When the chain-type clamp 10 is originally folded as shown in FIG. 9A with a small zigzag angle θ, the chain-type clamp 10 remains in the folded state as shown in FIG. 9A. It moves up along the shaft 6 as shown by the arrow. Further, when the chain-type clamp 10 is stretched with a large zigzag angle θ as shown in FIG. 9B and the chain-type clamp 10 is clamped with respect to the shaft 6, FIG. When a pulling-up force is applied as shown by the arrow B in FIG. 9B, the chain-type clamp 10 is stretched by the sliding contact resistance of the pin 8 of the chain-type clamp 10 with respect to the shaft 6 as shown in FIG. 9A. Then, the zigzag angle θ becomes a small folded state, and moves upward along the shaft 6 as indicated by the arrow B in FIG.

  As described above, when the movable cylinder 5 is lifted and moved upward, the clamp of the chain-type clamp tool 10 is automatically released, and there is no need to operate the operation button 12 of the clamp release tool 11. It is possible to easily perform an operation of raising the armrest 3 by pulling up the armrest 3 along the inside of the fixed cylinder 4.

  Further, the armature 3 can be lowered to an arbitrary height position by pushing down the movable cylinder 5 in a state where the operation button 12 is pressed and the clamp of the chain clamp 10 is released as described above. When the force of pressing the operation button 12 is released in this state, the operation button 12 is moved upward by the resilience of the spring 64, and the pressing rod 13 is also moved upward in the movable cylinder 5. Therefore, the pressing slider 61 of the pressing rod 13 The pressing of the upper end of the chain type clamp tool 10 is released. When the pressing of the upper end of the chain type clamping device 10 is released in this way, when the pressing force is applied to the movable cylinder 5, the chain type clamping device 10 has a zigzag angle as shown in FIG. 9B. It is stretched so as to increase θ, and is in a clamped state. Therefore, the armrest 3 can be fixed in a state adjusted to an arbitrary height position.

  Further, as described above, the movable cylinder 5 can be lifted and moved upward to raise the armrest 3 to an arbitrary height position. Then, when a pressing force is applied to the movable cylinder 5 at this arbitrary height position, the chain-type clamp 10 is stretched so that the zigzag angle θ is increased as shown in FIG. It becomes a state. Therefore, the armrest 3 can be fixed in a state adjusted to an arbitrary height position.

  As described above, the movable cylinder 5 can be fixed at an arbitrarily raised and lowered height position, and the armrest 3 can be adjusted to a continuous stepless height position. Therefore, the armrest 3 can be raised and lowered steplessly to finely adjust the height, and the usability is improved.

  As described above, when the armrest 3 is lowered, it is necessary to operate the operation button 12 of the clamp release tool 11, and the armrest 3 does not descend unless the operation button 12 is operated. For this reason, it can prevent that the armrest 3 falls carelessly, for example in the state which has put the armrest 3 on the armrest. Moreover, since the operation button 12 is disposed in the button hole 14 of the armrest 3 so as to be located below the upper surface opening of the button hole 14, it is possible to prevent the operation button 12 from being inadvertently pressed. Furthermore, if the shutter 15 is further slid and the upper surface opening of the button hole 14 is closed by the shutter 15 as shown in FIG. 2, it is possible to reliably prevent the operation button 12 from being inadvertently pressed. .

  FIG. 11 shows another embodiment of the chain-type clamp device 10 in which a pin 8 for rotatably connecting the link plate 7 is formed in a non-circular cross section. In the embodiment of FIG. 11, the cross section of the pin 8 is formed into an elliptical shape or an oval shape so as to be noncircular.

  Here, when the chain clamp 10 is extended as shown in FIG. 9B, the horizontal dimension W2 of the adjacent pins 8 in the horizontal direction is reduced, and the shaft 6 is interposed between the adjacent pins 8. Is clamped, and the chain-type clamping device 10 can be clamped and fixed to the shaft 6. However, if the pin 8 can freely rotate, the chain-type clamp 10 may be movable along the shaft 6 by the rolling of the pin 8 even in the clamped state. In the chain 9, the pin 8 is rotatably connected to one link plate 7 of a pair of adjacent link plates 7, but is fixed to the other link plate 7 by caulking, and normally rotates freely. I can't do it. However, in some cases, the caulking may be loosened and the pin 8 may be rotated. At this time, the chain clamp 10 may move due to the pin 8 rolling on the surface of the shaft 6. On the other hand, if the cross section of the pin 8 is formed in a non-circular shape as in the embodiment of FIG. 11, the pin 8 can be prevented from rolling on the surface of the shaft 6. Thus, it is possible to reliably hold the clamp fixing state of the chain type clamp device 10 against the above.

  In the embodiment of FIG. 12, the pin 8 is formed of a shaft portion 8a and an eccentric portion 8b. Since the eccentric portion 8b in contact with the surface of the shaft 6 is eccentric from the shaft portion 8a, the pin 8 can be prevented from rolling on the surface of the shaft 6 in this case as well. The clamp fixed state of the tool 10 can be reliably held.

  In the embodiment of FIG. 13, the pin 8 is formed of a spring material that bends and deforms, and when the shaft 6 is clamped between adjacent pins 8, the pin 8 is bent and deformed. The bending deformed pin 8 cannot roll on the surface of the shaft 6, and in this case, the clamp fixing state of the chain-type clamp device 10 with respect to the shaft 6 can be reliably maintained. .

DESCRIPTION OF SYMBOLS 1 Toilet seat 2 Portable toilet body 3 Armrest 4 Fixed cylinder 5 Movable cylinder 6 Shaft 7 Link plate 8 Pin 9 Chain 10 Chain type clamp tool 11 Clamp release tool 12 Operation button 13 Press rod 14 Button hole 15 Shutter 16 Backrest 17 Fixed armrest

Claims (3)

  A portable toilet comprising a portable toilet body, an armrest provided on the portable toilet body, and an elevating mechanism for raising and lowering the armrest steplessly.   2. The portable device according to claim 1, wherein the armrest is automatically released when a force for raising the armrest is applied with the armrest fixed at an arbitrary height position. Toilet bowl.   The portable toilet according to claim 1 or 2, further comprising an operation button for releasing the fixation of the armrest in a state where the armrest is fixed at an arbitrary height position.

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