JP5746597B2 - Portable toilet armrest structure - Google Patents

Description

  The present invention relates generally to an armrest structure, and more particularly to an armrest structure for a portable toilet.

  Some portable toilets are provided with armrests in order to reduce the burden of the user's sitting and standing up operations. When the armrest is fixed to the portable toilet body, the armrest does not sway even if the user puts his hand on the armrest and performs a sitting or standing operation, while the user is seated on the portable toilet from the side of the portable toilet. Cannot transfer to. Therefore, conventionally, an armrest structure has been proposed in which the armrest can be flipped up as necessary to open the side of the portable toilet.

  For example, in Japanese Patent Application Laid-Open No. 2005-137873 (Patent Document 1), a lock pin is inserted into a guide hole of an armrest arm and a stopper pin is fitted into the fitting hole to regulate the rotation of the arm. An armrest structure for a chair is described in which an arm can be turned by shifting a lock pin and a guide hole to disengage a stopper pin from a fitting hole.

  Japanese Patent Laying-Open No. 2005-58567 (Patent Document 2) discloses a lever and a hook that are pivotally supported on an arm fixed to the lower surface of an armrest body, and a connecting bar that is connected over the lever and the hook. A chair armrest structure consisting of is described. In the armrest structure of the chair of Patent Document 2, the engaging portion that can engage the hook is engaged with the armrest holder, and the hook is engaged with the engaging portion by the biasing force of the elastic member provided on the hook. It is energized. To lift the armrest and release the side, grasp the lever and pull it up against the urging force of the torsion coil spring so as to reduce the distance from the armrest body. The shaft support portion can be rotated in the clockwise direction, and the hook can be detached from the engaging portion of the holder.

JP 2005-137873 A JP 2005-58567 A

  However, in the chair armrest structure of Patent Document 1, the user needs to operate the rotation of the arm by fitting the lock pin into the guide hole or by shifting the lock pin from the fitting hole. The lock pin and the fitting hole are arranged on the pivot shaft of the arm, that is, on the heel behind the user. Therefore, when the arm is flipped up, it is necessary for the user to operate the lock pin by twisting his / her body and facing the direction of the heel or rely on a caregiver. Thus, in the armrest structure of patent document 1, in the state in which the user sat down on the toilet seat, the operation which flips up an armrest by hand cannot be performed.

  Moreover, in the armrest structure of the chair of patent document 2, although a user can perform operation which cancels | releases the rotation control of an arm at hand, the structure is complicated and there are many number of parts.

  Therefore, an object of the present invention is to provide an armrest structure for a portable toilet that allows a user to easily release the rotation restriction of the armrest with a simple structure.

  An armrest structure for a portable toilet according to one aspect of the present invention includes an armrest, an operation member, a connecting member, a connected member, a heel-side fixture, a biasing member, a regulating means, and a support portion. And a supported part.

  The armrest is pivotally attached to a heel that supports the backrest. The operation member is rotatably attached to the armrest so that the user operates the rotation of the armrest, and an operation portion on which the user applies a force and an action portion on which the force applied to the operation portion acts Have The connecting member is connected to the action part. A to-be-connected member is attached to the rear part of an armrest, and is connected with a connecting member. The heel side fixture is attached to the heel and regulates the rotation of the connected member. The urging member urges the coupled member toward the heel side fixture. The restricting means restricts the rotation range of the operation member. The support portion is fixed to the heel and is used to support the armrest horizontally. The supported portion is arranged on the armrest so as to come into contact with the support portion when the armrest extends horizontally.

  The operating member is attached to the heel side by changing the direction of the force exerted on the action portion to a direction along the anteroposterior direction of the heel when a force is applied to the operating portion by the user and pulling the connecting member. It is comprised so that the rotation control of the to-be-connected member by a tool may be cancelled | released. The support portion is disposed below the armrest on the front side of the pivot shaft of the armrest.

  When the user applies a force to the operation portion of the operation member, a force is exerted on the action portion in the direction along the front-rear direction of the heel, and the connecting member connected to the action portion is pulled. A pin-shaped connected member is connected to the connecting member. The connected member is urged by the urging member toward the heel-side fixture, but when the connecting member is pulled, the connected member is pulled in a direction opposite to the urging by the urging member, and the connected member is pulled. The connecting member is moved away from the heel side fixture. When the connected member moves away from the heel side fixture, the rotation restriction of the connected member by the heel side fixture is released.

  Thus, the user can rotate the armrest. Since the rotation restriction of the connected member is released by pulling the connecting member, for example, a wire can be used as the connecting member.

  On the other hand, when the user does not operate the operation member, the coupled member is urged toward the heel side fixture by the urging member, and the rotation of the coupled member is restricted.

  In this way, it is possible to provide an armrest structure for a portable toilet that allows the user to easily release the armrest rotation restriction by operating the armrest operating member with a simple structure.

  In addition, since the supported part fixed to the armrest is held horizontally from below in front of the pivoting axis of the armrest by the support part fixed to the armrest, the armrest is held when the user stands up from the toilet seat Even if it is difficult to wobble.

  Furthermore, since the rotation range of the operation member is restricted by the restriction means, the user can be prevented from turning the operation member more than necessary, and the operation member, the connecting member, and the connected member can be prevented from being damaged. .

  In the armrest structure of the portable toilet according to one aspect of the present invention, the connected member is attached to the armrest on the rear side of the pivot shaft of the armrest, and the heel-side fixture is behind the pivot shaft of the armrest. It has a wall part arrange | positioned under a to-be-connected member in, and it is preferable that the urging | biasing member is urging | biasing a to-be-connected member back.

  By doing in this way, rotation of a to-be-connected member can be controlled with the heel side fixture of simple composition. In addition, when the force is applied to the operation unit, the connecting member can be pulled forward to release the rotation restriction of the connected member.

  In the armrest structure of the portable toilet according to one aspect of the present invention, a lower inclined surface is formed on the lower surface of the wall portion at the center side of the wall portion and at the end side of the wall portion in the longitudinal direction of the heel. It is preferable that

  Since the connected member is attached to the armrest on the rear side of the pivot shaft of the armrest, when the armrest rotates downward from the upper side to the substantially horizontal state, the connected member Rotates from below to above. At this time, the connected member moves along the inclined surface of the lower surface of the wall portion and returns to the upper surface of the wall portion. By doing in this way, it becomes unnecessary for a user to operate an operation member in order to control rotation of an armrest.

  In the portable toilet armrest structure according to one aspect of the present invention, the connected member preferably has a pin shape. Further, the operation member is configured such that when the user applies a force to the operation unit, the action unit rotates from above to below and from the back to the front, It is preferable to have a recess that accommodates the connected member that is urged by the urging member, the recess opening on the front side, and the inner lower surface of the recess being an inclined surface that is relatively low on the opening side.

  By accommodating the pin-shaped connected member in the recess of the heel-side fixture, the rotation of the armrest can be restricted by the heel-side fixture and the connected member having a simple configuration.

  Further, when the user applies a force to the operation part, the action part rotates downward from above, and at the same time, the connected member connected to the action part via the connection member also moves from above to below. Moved towards. The recessed portion for accommodating the connected member is opened on the front side, and the inner lower surface of the recessed portion is an inclined surface whose opening side is relatively low. Therefore, when the connected member is moved downward from above, that is, the user When a force is applied to the operation unit, the connected member moves smoothly.

  By doing in this way, it becomes possible for a user to cancel | release an armrest rotation regulation easily with a simple structure. Further, when the armrest is returned from a state in which the armrest is flipped up to a state extending substantially horizontally, the connected member can easily approach the inner bottom surface of the recess from the outside of the recess, and the backlash in the vertical direction of the armrest is reduced.

  In the portable toilet armrest structure according to one aspect of the present invention, the connected member is preferably arranged so as to protrude toward the side surface of the bag.

  By doing in this way, a to-be-connected member and a heel side attachment tool can be firmly latched, and the intensity | strength of the whole armrest structure can be raised. In addition, by locking the connected member and the heel side fixture on the side surface of the heel, the configuration of the entire armrest structure can be simplified and the number of parts can be reduced as compared with the case of locking at other positions. Can do.

  In the armrest structure of the portable toilet according to one aspect of the present invention, it is preferable that the biasing member is a torsion spring, and one end of the torsion spring is disposed so as to contact the connected member.

  In this way, for example, the biased member is a linear spring, and the pin-shaped coupled member is coupled to one end of the linear spring as compared to the coupled case. The contact portion between the member and the biasing member is increased. Therefore, even if the position of the connected member with respect to the biasing member changes, it becomes easy to bias the connected member.

  An armrest structure for a portable toilet according to another aspect of the present invention includes an armrest, an operation member, a connecting member, a hook, a pin-shaped heel-side engagement tool, a biasing member, a regulating means, and a support. And a supported part.

  The armrest is pivotally attached to a heel that supports the backrest. The operation member is attached to the armrest so that the user can rotate the armrest, and includes an operation portion to which the user applies force and an action portion to which the force applied to the operation portion acts. Have. The connecting member is connected to the action part. The hook is attached to the rear part of the armrest and connected to the connecting member. The heel side engagement tool is attached to the heel so as to be engageable with the hook, and restricts the rotation of the hook. The urging member urges the hook toward the heel side engagement tool. The restricting means restricts the rotation range of the operation member. The support portion is fixed to the heel and is used to support the armrest horizontally. The supported portion is arranged on the armrest so as to come into contact with the support portion when the armrest extends horizontally.

  When a force is applied to the operation part by the user, the operation member changes the direction of the force exerted on the action part to a direction along the front-rear direction of the scissors, and pulls the connecting member to It is comprised so that engagement with a side engaging tool may be cancelled | released. The support portion is disposed below the armrest on the front side of the pivot shaft of the armrest.

  When the user applies a force to the operation portion of the operation member, a force is exerted on the action portion in the direction along the front-rear direction of the heel, and the connecting member connected to the action portion is pulled. A hook is connected to the connecting member. The hook is urged by the urging member toward the pin-shaped heel side engagement tool, but when the connecting member is pulled, the hook is pulled in the direction opposite to the urging by the urging member, and the hook Is moved away from the heel side engagement tool. When the hook moves away from the heel side engagement tool, the hook rotation restriction by the heel side engagement tool is released.

  Thus, the user can rotate the armrest. Since the rotation restriction of the hook is released by pulling the connecting member, for example, a wire can be used as the connecting member.

  On the other hand, when the user does not operate the operation member, the hook is urged toward the heel side engagement tool by the urging member, and the rotation of the hook is restricted.

  In this way, it is possible to provide an armrest structure for a portable toilet that allows the user to easily release the armrest rotation restriction by operating the armrest operating member with a simple structure.

  In addition, since the supported part fixed to the armrest is held horizontally from below in front of the pivoting axis of the armrest by the support part fixed to the armrest, the armrest is held when the user stands up from the toilet seat Even if it is difficult to wobble.

  Further, since the rotation range of the operation member is restricted by the restriction means, the user can be prevented from turning the operation member more than necessary, and the operation member, the connecting member, and the hook can be prevented from being damaged.

  In the armrest structure of the portable toilet according to the present invention, the operation portion and the action portion are substantially orthogonal to the line connecting the operation portion and the rotation shaft of the operation member. It is preferable that they are arranged.

  By doing in this way, when a force is applied to the operation part by the user, the direction of the force exerted on the action part can be easily changed to a direction along the front-rear direction of the bag.

  In the armrest structure of the portable toilet according to the present invention, the operation member is preferably arranged so that the operation portion is positioned below the armrest.

  By doing in this way, it becomes easy for a user to apply force to an operation part.

  In the armrest structure of the portable toilet according to the present invention, it is preferable that the support portion has a side surface that comes into contact with the armrest when the armrest is rotated so as to extend vertically.

  By doing in this way, it can prevent that the armrest flipped up too much rotates.

  In the armrest structure of the portable toilet according to the present invention, it is preferable that the support portion has a wall portion that extends parallel to the side surface of the heel and abuts against the side surface of the armrest when the armrest extends horizontally.

  By doing so, when the armrest is in a substantially horizontal state, it is possible to prevent rattling of the armrest in the left-right direction.

  In the portable toilet armrest structure according to the present invention, it is preferable that a wave washer that is elastically deformable along the axial direction is disposed on the pivot shaft.

  By doing so, it is possible to prevent the armrest from being too vigorous in rotation and requiring a large force for rotation.

  As described above, according to the present invention, it is possible to provide a connection structure that is easy to handle and a handrail for a bathtub provided with the connection structure.

It is a left view which shows the whole portable toilet of 1st Embodiment of this invention. It is a left view which shows the whole of a base and an armrest. It is sectional drawing which shows the structure inside an armrest. It is a figure which shows a base, the member fixed to the base, and a lock pin. It is sectional drawing which shows the structure inside an armrest when a lever is gripped. It is a figure which shows the base when a lever is grasped, the member fixed to the base, and a lock pin. It is sectional drawing which shows the structure inside an armrest in the state in which the armrest was flipped up. It is a figure which shows the base of the state in which the armrest was flipped up, the member fixed to the base, and the lock pin. . It is a figure which shows the base of the armrest of 2nd Embodiment of this invention, the member fixed to the base, and a lock pin. It is sectional drawing which shows the base when the armrest lever of 2nd Embodiment of this invention is gripped, the member fixed to the base, and a lock pin. It is sectional drawing which shows the structure inside the armrest of 3rd Embodiment of this invention. It is a figure which shows the base of the armrest of 3rd Embodiment of this invention, the member fixed to the base, and a hook. It is a figure which shows a base when the lever of the armrest of 3rd Embodiment of this invention is gripped, the member fixed to the base, and a hook.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, a toilet 100 according to a first embodiment of the present invention mainly includes a toilet 1, a toilet seat 2 attached to the upper surface of the toilet 1, a lid 3 that covers the toilet seat 2 and the upper surface of the toilet 1, Legs 4 for supporting the toilet 1 on the floor, a cleaning device 5, a backrest 6 against which the user's back is brought into contact, a heel 7 disposed on the left and right of the backrest 6, and a short fixed to the heel 7 An armrest 8 and an armrest 10 attached to the collar 7 via a base 9 fixed to the collar 7 are provided. In the following description, the side on which the backrest 6 is arranged is the rear side of the toilet 100, and the side opposite to the side on which the backrest 6 is arranged is the front side of the toilet 100.

  The toilet seat 2 is attached to the upper surface of the toilet 1 by bolts or the like so as to be rotatable in a vertical plane. The lid 3 is configured to be folded and leaned under the backrest 6. The cleaning device 5 includes a tank for storing water for cleaning the inside of the toilet 1, a control unit for controlling supply of water to the toilet 1, operation buttons operated by the user, and the like.

  A pair of short armrests 8 are fixed to the left and right side surfaces of the collar 7. The upper surface of the short armrest 8 extends substantially horizontally along the front-rear direction. For example, a metal base 9 is fixed above the short armrest 8 on the left and right side surfaces of the collar 7. An armrest 10 is rotatably attached to the base 9. The armrest 10 includes an upper wooden armrest body 19 and a lower metal frame 18. The armrest body 19 is fixed to the frame 18. The upper surface of the armrest 10 extends substantially horizontally and along the front-rear direction. The front end portion of the armrest 10 projects forward from the front end portion of the short armrest 8. On the lower surface of the front end portion of the armrest 10, a lever 11 for a user to operate the rotation of the armrest 10 protrudes. The lever 11 is an example of an operation member. In addition, the armrest 10 and the short armrest 8 may be provided in both the left and right heels 7, or may be provided only in either one of the left and right.

  As shown in FIG. 2, the armrest 10 is attached to the base 9 so as to rotate about a rotation shaft 181 at the rear of the frame 18. A wave washer (not shown) that can be elastically deformed along the axial direction is disposed on the rotation shaft 181.

  In the base 9, a fixed base 17 that supports the frame 18 of the armrest 10 from below is fixed in front of the rotation shaft 181 of the armrest 10. In this embodiment, the fixing base 17 is made of metal, and the upper surface and the rear surface are covered with a resin cover, but may be formed of other materials. The fixed base 17 includes an upper surface 171, a rear wall 172, and a lateral wall 173. The upper surface 171 of the fixed base 17 extends horizontally. The rear wall 172 of the fixed base 17 extends vertically downward from the rear end portion of the upper surface 171. The horizontal wall 173 is disposed in parallel with the flange 7 so as to sandwich the frame 18 between the flange 7 and the horizontal wall 173, and extends vertically upward from the upper surface 171 of the fixed base 17. A fixed portion 182 provided on the frame 18 of the armrest 10 contacts the upper surface 171 of the fixing base 17. The fixed portion 182 may be formed integrally with the frame 18 or may be formed separately from the frame 18 and attached to the frame 18.

  As shown in FIG. 3, the lever 11 is attached to the front end of the frame 18. The lever 11 includes an operation unit 111, an action unit 112, and a rotation shaft 114 of the lever 11. The operation unit 111 protrudes below the frame 18. The action portion 112 and the rotation shaft 114 of the lever 11 are accommodated inside the frame 18. The action portion 112 is disposed above the rotation shaft 114 of the lever 11. The rotation shaft 114 of the lever 11 is disposed on the front side of the operation unit 111. A line A in the drawing is a line along a direction connecting the operation unit 111, that is, a position where the greatest force is applied by the user when the user operates the lever 11 and the rotation shaft 114 of the lever 11. A line B in the drawing is a line along a direction connecting the action portion 112, that is, a position where a wire 12 to be described later is attached and the rotation shaft 114 of the lever 11. The operation unit 111 and the action unit 112 are arranged so that the line A is substantially orthogonal to the line B.

  A lever stopper 16 is disposed in front of the lever 11. The lever stopper 16 is formed by the inner wall surface of the case that accommodates the lever 11. The lever stopper 16 may be formed by an inner wall surface of the frame 18, for example. The lever 11 and the lever stopper 16 may be housed in a case as a lever unit and attached to the armrest 10 via the case, or the lever 11 and the lever stopper 16 may be separately attached to the armrest 10.

  As described above, the lever 11 is disposed so that the operation unit 111 is positioned below the armrest 10. By doing in this way, it becomes easy for a user to apply force to the operation unit 111.

  A wire 12 is attached to the action portion 112. The wire 12 passes through the inside of the frame 18 and is connected to the lock pin 13 at the rear end portion of the frame 18. The lock pin 13 has a pin shape, is attached to the frame 18 via the connection member 131, and extends so as to protrude toward the side surface of the flange 7. The connection member 131 is formed of a rigid material so as not to expand and contract, and is attached to the frame 18 so as to be rotatable about a rotation shaft (not shown) of the connection member 131. By doing so, the distance from the rotation shaft of the connecting member 131 to the lock pin 13 is fixed.

  The lock pin 13 is urged from the front side toward the rear side by a torsion spring 15 attached to the rear end portion of the frame 18. The torsion spring 15 has a vertical side 151 and a horizontal side 152. The horizontal side 152 of the torsion spring 15 extends in a substantially horizontal direction and is in contact with the inner bottom surface 143 of the frame 18. A vertical side 151 of the torsion spring 15 extends in a substantially vertical direction, and an end thereof is in contact with the lock pin 13.

  As shown in FIG. 4, the heel side fixture 14 is welded to the base 9 between the base 9 and the armrest 10 (FIG. 3). The heel-side fixture 14 is formed with a recess 141 that opens to the front side. The lower portion 142 of the recess 141 supports the lock pin 13 from below. The upper surface of the lower portion 142 of the concave portion 141, that is, the inner bottom surface 143 of the concave portion 141 forms an inclined surface that is low on the front opening side and high on the rear side. A return slope 144 is formed on the outer lower surface of the recess 141. The return slope 144 is an inclined surface that is high on the front side and low on the rear side. The heel side fixture 14 may be formed separately from the base 9 and attached to the heel 7 via the base 9, or may be formed integrally with the base 9.

  As shown in FIG. 5, when the user holds the operation unit 111 of the lever 11 and the lever 11 is pushed upward from below, the lever 11 rotates about the rotation shaft 114, and the action of the lever 11 is performed. The part 112 moves to the front side and to the lower side compared to the position of FIG. When the action portion 112 of the lever 11 moves relatively forward, the wire 12 connected to the lever 11 is pulled forward, and the lock pin 13 attached to the wire 12 is attached to the torsion spring 15. It is pulled to the front side against the force. The lever 11 can be rotated until the front end surface 113 contacts the lever stopper 16.

  As described above, in the operation unit 111 and the action unit 112, the line A connecting the operation unit 111 and the rotation shaft 114 of the lever 11 is substantially orthogonal to the line B connecting the operation unit 112 and the rotation shaft 114 of the lever 11. Are arranged to be. By doing in this way, when a force is applied to the operation part 111 by the user, the direction of the force exerted on the action part 112 can be easily changed to the direction along the front-rear direction of the rod 7.

  As shown in FIG. 6, the lock pin 13 pulled forward moves out of the recess 141.

  Operation | movement of the armrest 10 structure of the portable toilet 100 comprised as mentioned above is demonstrated.

  When the armrest 10 extends in a substantially horizontal direction, when the user tries to lift the front end of the armrest 10, an upward force is applied to the front end of the armrest 10 from below, while the armrest 10 rotates. A force downward from above is applied behind the shaft 181. As shown in FIGS. 1 to 4, when the lever 11 is not pushed into the frame 18, the lock pin 13 at the rear end of the armrest 10 is urged toward the inside of the recess 141 by the torsion spring 15. It is accommodated in the inside of the recess 141 and supported by the lower part 142 of the recess 141 from below. Therefore, even if a downward force from above is applied to the rear end portion of the armrest 10, the lock pin 13 is not rotated downward, and therefore the frame 18 to which the lock pin 13 is attached is also not rotated. Thus, when the user does not operate the lever 11, the lock pin 13 is biased toward the heel side fixture 14 by the torsion spring 15, and the rotation of the lock pin 13 is restricted.

  Next, when the user applies a force to the operation portion 111 of the lever 11, the force is exerted on the action portion 112 in the direction along the front-rear direction of the flange 7, and the wire 12 connected to the action portion 112 is provided. Be pulled. A pin-shaped lock pin 13 is connected to the wire 12. The lock pin 13 is urged by the torsion spring 15 toward the heel side fixture 14, but when the wire 12 is pulled, the lock pin 13 is pulled in a direction opposite to the urging by the torsion spring 15, The lock pin 13 is moved away from the heel side fixture 14. When the lock pin 13 moves away from the heel side fixture 14, the rotation restriction of the lock pin 13 by the heel side fixture 14 is released.

  Thus, the user can rotate the armrest 10. Since the rotation restriction of the lock pin 13 is released when the wire 12 is pulled, the wire 12 can be used as the connecting member.

  Further, since the fixed portion 182 fixed to the armrest 10 is held horizontally from below in front of the pivot shaft 181 of the armrest 10 by the fixing portion 17 fixed to the collar 7, the user can move the toilet seat 2. Even when the armrest 10 is held, it is difficult to wobble.

  Further, since the rotation range of the lever 11 is regulated by the regulating means, the user can be prevented from turning the lever 11 more than necessary, and the lever 11, the wire 12, and the lock pin 13 can be prevented from being damaged. .

  As shown in FIGS. 7 and 8, the armrest 10 is flipped up to a state extending in a substantially vertical direction. In a state where the armrest 10 is flipped up, the fixed portion 182 of the armrest 10 contacts the rear wall 172 of the fixing base 17. The rear wall 172 is disposed on the front side of the fixed portion 182. Even if the user tries to further rotate the armrest 10, the fixed portion 182 is not pressed against the rear wall 172 and the armrest 10 does not rotate too much.

  As described above, the support portion has the rear wall 172 that contacts the armrest 10 when the armrest 10 is rotated so as to extend vertically. By doing in this way, it can prevent that the armrest 10 bounced up rotates too much.

  Next, an operation for returning the armrest 10 that is flipped up so as to extend in the substantially vertical direction to a state extending in the substantially horizontal direction will be described.

  When the armrest 10 that has been flipped up is returned to a state that extends in a substantially horizontal direction, the user holds the front end of the armrest 10 without grasping the lever 11 and slowly moves the front end of the armrest 10 downward. Rotate. When the front end portion of the armrest 10 is turned downward, the rear end portion of the armrest 10 is turned upward. At this time, the lock pin 13 moves in the direction indicated by the arrow P in FIG. The lock pin 13 contacts the return slope 144 on the lower surface of the heel-side fixture 14 and moves along the return slope 144 in the direction indicated by the arrow Q in the drawing. When the armrest 10 is extended substantially horizontally, the lock pin 13 is urged rearward by the torsion spring 15, moves in the direction indicated by the arrow R in the figure, and is accommodated in the recess 141.

  As described above, the lower surface of the lower portion 142 is formed with an inclined surface that is lower on the center side of the lower portion 142 and higher on the front end portion side of the lower portion 142 in the front-rear direction of the flange 7.

  Since the lock pin 13 is attached to the armrest 10 on the rear side of the rotation shaft 181 of the armrest 10, when the armrest 10 is rotated from the upper side to the lower side from the substantially vertical state to the substantially horizontal state. The lock pin 13 rotates from below to above. At this time, the lock pin 13 moves along the return slope 144 on the lower surface of the lower portion 142 and returns to the upper surface of the lower portion 142. By doing so, it is not necessary for the user to operate the lever 11 in order to restrict the rotation of the armrest 10.

  The lock pin 13 is attached to the frame 18 via a connection member 131, and the distance from the rotation shaft of the connection member 131 to the lock pin 13 is fixed. By doing in this way, when returning the armrest 10 from the state where it was flipped up to the state that extends in the substantially horizontal direction, it is possible to prevent the lock pin 13 that rotates upward from the downward direction from jumping upward. . By doing in this way, the play of the armrest 10 can be reduced. Instead of attaching the lock pin 13 to the frame 18 via the connecting member 131, the upward movement of the lock pin 13 is regulated by adjusting the height of the upper surface inside the recess 141. Similar effects can be obtained.

  As described above, the structure of the armrest 10 of the portable toilet 100 according to the first embodiment includes the armrest 10, the lever 11, the wire 12, the lock pin 13, the heel side attachment tool 14, the torsion spring 15, and the lever. A stopper 16, a fixing base 17, and a fixed part 182 are provided.

  The armrest 10 is rotatably attached to a heel 7 that supports the backrest 6. The lever 11 is pivotally attached to the armrest 10 in order for the user to operate the rotation of the armrest 10, and an operation unit 111 to which the user applies force and a force applied to the operation unit 111. And an action part 112 that acts. The wire 12 is connected to the action part 112. The lock pin 13 is attached to the rear portion of the armrest 10 and is connected to the wire 12. The heel side fixture 14 is attached to the heel 7 and regulates the rotation of the lock pin 13. The torsion spring 15 biases the lock pin 13 toward the heel side fixture 14. The lever stopper 16 regulates the rotation range of the lever 11. The fixed base 17 is fixed to the collar 7 and is used to support the armrest 10 horizontally. The to-be-fixed part 182 is arrange | positioned at the armrest 10 so that it may contact | abut to the fixing stand 17 when the armrest 10 is extended horizontally.

  The lever 11 changes the direction of the force exerted on the action part 112 to a direction along the front-rear direction of the flange 7 when a force is applied to the operation part 111 by the user, and pulls the wire 12. It is comprised so that rotation restrictions of the lock pin 13 by the heel side fixture 14 may be cancelled | released. The fixed base 17 is disposed below the armrest 10 on the front side of the pivot shaft 181 of the armrest 10.

  In this way, an armrest structure for a portable toilet is provided that allows the user to easily release the rotation restriction of the armrest 10 by operating the lever 11 of the armrest 10 with a simple structure. be able to.

  Further, in the structure of the armrest 10 of the portable toilet 100, the lock pin 13 is attached to the armrest 10 on the rear side of the rotation shaft 181 of the armrest 10, and the heel side attachment 14 is attached to the rotation shaft 181 of the armrest 10. On the rear side, a lower portion 142 is disposed below the lock pin 13, and the torsion spring 15 urges the lock pin 13 toward the rear.

  By doing in this way, rotation of the lock pin 13 can be controlled with the heel side fixture 14 of a simple structure. In addition, the wire 12 can be pulled forward when a force is applied to the operation unit 111 so that the rotation restriction of the lock pin 13 can be released.

  Further, in the structure of the armrest 10 of the portable toilet 100, the lock pin 13 has a pin shape. Further, the lever 11 is configured such that when the user applies a force to the operation unit 111, the action unit 112 rotates from the upper side to the lower side and from the rear side to the front side, 14 has a recess 141 that accommodates the lock pin 13 that is biased by the torsion spring 15. The recess 141 opens on the front side, and the inner bottom surface 143 of the recess 141 is an inclined surface that has a relatively low opening side. is there.

  Since the pin-shaped lock pin 13 is accommodated in the recess 141 of the heel-side fixture 14, the rotation of the armrest 10 can be restricted by the heel-side fixture 14 and the lock pin 13 having a simple configuration. Further, when the armrest 10 is returned from a state in which the armrest 10 is flipped up to a state that extends substantially horizontally, the lock pin 13 is likely to approach the inner bottom surface 143 of the recess 141 from the outside of the recess 141, and the backlash of the armrest 10 in the vertical direction is reduced. To reduce.

  Further, when the user applies a force to the operation unit 111, the action part 112 rotates downward from above, so that the lock pin 13 connected to the action part 112 via the wire 12 is also upward. Is moved downward from. The concave portion 141 that accommodates the lock pin 13 opens on the front side, and the inner bottom surface 143 of the concave portion 141 is a relatively low inclined surface on the opening side, so that when the lock pin 13 is moved downward from above, that is, When the user applies a force to the operation unit 111, the lock pin 13 moves smoothly.

  By doing in this way, it becomes possible for a user to cancel | release the rotation restrictions of the armrest 10 easily with a simple structure.

  Further, in the armrest 10 structure of the portable toilet 100, the lock pin 13 is disposed so as to protrude toward the side surface of the bag 7.

  By doing in this way, the lock pin 13 and the heel side attachment tool 14 can be firmly latched, and the intensity | strength of the whole structure of the armrest 10 can be raised. In addition, by locking the lock pin 13 and the heel-side fixture 14 on the side surface of the heel 7, the overall structure of the armrest 10 can be simplified and the number of parts can be reduced compared to the case where the lock pin 13 and the heel-side fixture 14 are locked at other positions. Can be reduced.

  Further, in the structure of the armrest 10 of the portable toilet 100, the biasing member is a torsion spring 15, and one end portion of the torsion spring 15 is disposed so as to contact the lock pin 13.

  By doing so, for example, the urging member is a linear spring, and the lock pin 13 is compared with the case where the pin-shaped lock pin 13 is urged by one end of the linear spring. The contact portion between 13 and the torsion spring 15 becomes large. Therefore, even if the position of the lock pin 13 with respect to the torsion spring 15 changes, the lock pin 13 can be easily biased.

  Further, in the structure of the armrest 10 of the portable toilet 100, the fixing base 17 has a lateral wall 173 that extends parallel to the side surface of the heel 7 and abuts against the side surface of the armrest 10 when the armrest 10 extends horizontally. .

  By doing in this way, when the armrest 10 is made into the substantially horizontal state, the rattling of the left-right direction of the armrest 10 can be prevented.

  Further, in the structure of the armrest 10 of the portable toilet 100, a wave washer that is elastically deformable along the axial direction is arranged on the rotation shaft 181.

  By doing so, it is possible to prevent the armrest 10 from being too vigorous for rotation and requiring a large force for rotation.

(Second Embodiment)
The portable toilet according to the second embodiment has substantially the same configuration as the portable toilet 100 according to the first embodiment (FIGS. 1 to 8). The portable toilet of the second embodiment is different from the first embodiment in the shape of the heel side fixture. Hereinafter, description of members indicated by the same reference numerals as those shown in FIGS. 1 to 8 will be omitted.

  As shown in FIG. 9, the board 24 is being fixed to the base 9 of the portable toilet of 2nd Embodiment as a heel side fixture. The plate 24 extends substantially horizontally, and supports the lock pin 13 biased by the torsion spring 15 from below when the armrest body 19 extends in the substantially horizontal direction.

  When the user does not grasp the lever 11, the lock pin 13 is urged to be disposed on the plate 24 by the torsion spring 15 as in the first embodiment. Since the lock pin 13 is supported by the plate 24 from below, even if the user tries to turn the front end of the armrest body 19 upward, the rear end of the armrest 10 on which the lock pin 13 is arranged is It does not rotate downward. In this way, the rotation of the armrest 10 can be restricted with a simple configuration.

  As shown in FIG. 10, when the user grasps the lever 11, the wire 12 connected to the action portion 112 of the lever 11 is pulled forward, and the lock pin 13 connected to the rear end portion of the wire 12 is pulled. Pulled forward. When the lock pin 13 is pulled forward until it is out of the region on the plate 24, the restriction of the rotation by the plate 24 is released.

  In this manner, the user can grasp the lever 11 at hand, release the restriction on the rotation of the armrest 10, and flip up the armrest 10.

  Note that the lower surface of the plate 24 is not formed with an inclined surface that is higher on the front side and lower on the rear side, such as the return slope 144 of the heel-side fixture 14 of the first embodiment. Therefore, the user needs to grasp the lever 11 when returning the armrest 10 that has been flipped up.

  Other configurations and effects of the portable toilet armrest structure of the second embodiment are the same as those of the first embodiment.

(Third embodiment)
The portable toilet according to the third embodiment has substantially the same configuration as the portable toilet 100 according to the first embodiment (FIGS. 1 to 8). The portable toilet of the third embodiment is different from the first embodiment in that a protrusion is formed instead of the heel side fixture 14 and a hook is provided instead of the lock pin 13. Hereinafter, description of members indicated by the same reference numerals as those shown in FIGS. 1 to 8 will be omitted.

  As shown in FIGS. 11 and 12, in the portable toilet armrest 30 of the third embodiment, a hook 33 is connected to the rear end portion of the wire 12 connected to the action portion 112 of the lever 11. The hook 33 is formed in, for example, a V shape, and is formed of a bar-shaped upper side 331 and a lower side 332. The upper side 331 and the lower side 332 are connected at one end, the other end is spaced apart and formed in a V shape, and has an opening and a bent portion. The hook 33 is connected to the wire 12 at the bent portion with the opening portion directed rearward. The hook 33 contacts the vertical side 151 of the torsion spring 15 and is urged rearward by the torsion spring 15.

  The base 9 is formed with a protrusion 34 as a heel side engagement tool. The hook 33 urged rearward by the torsion spring 15 engages with the protrusion 34. When the hook 33 is engaged with the protrusion 34, the upper side 331 of the hook 33 is supported by the protrusion 34 from below.

  When the user does not grasp the lever 11, the hook 33 is supported from below by the protrusion 34, so that even if the user tries to turn the front end of the armrest body 19 upward, the hook 33 is arranged. The rear end of the armrest 10 is not turned downward. In this way, the rotation of the armrest 10 can be restricted.

  As shown in FIG. 13, when the user grasps the lever 11, the wire 12 connected to the action portion 112 of the lever 11 is pulled forward, and the hook 33 connected to the rear end portion of the wire 12 moves forward. Pulled on. When the upper side 331 of the hook 33 is pulled forward until it is detached from the protrusion 34, the restriction of the rotation by the protrusion 34 is released.

  In this manner, the user can grasp the lever 11 at hand, release the restriction on the rotation of the armrest 10, and flip up the armrest 10.

  When the armrest 10 that has been flipped up is returned, the user needs to hold the lever 11 so that the upper side 331 of the hook 33 does not come into contact with the protrusion 34 to prevent the armrest 10 from rotating.

  As described above, the structure of the armrest 30 of the portable toilet according to the third embodiment includes the armrest 30, the lever 11, the wire 12, the hook 33, the pin-shaped protrusion 34, the torsion spring 15, and the lever stopper 16. And a fixed base 17 and a fixed portion 182.

  The armrest 30 is rotatably attached to the heel 7 that supports the backrest 6. The lever 11 is rotatably attached to the armrest 30 in order for the user to operate the rotation of the armrest 30, and the operation unit 111 to which the user applies force and the force applied to the operation unit 111 act. And an action part 112 to be operated. The wire 12 is connected to the action part 112. The hook 33 is attached to the rear portion of the armrest 30 and is connected to the wire 12. The protrusion 34 is attached to the flange 7 so as to be engageable with the hook 33 and restricts the rotation of the hook 33. The torsion spring 15 biases the hook 33 toward the protrusion 34. The lever stopper 16 regulates the rotation range of the lever 11. The fixed base 17 is fixed to the collar 7 and is used to support the armrest 30 horizontally. The to-be-fixed part 182 is arrange | positioned at the armrest 30 so that it may contact | abut to the fixing stand 17 when the armrest 30 is extended horizontally.

  The lever 11 changes the direction of the force exerted on the action part 112 to a direction along the front-rear direction of the flange 7 when a force is applied to the operation part 111 by the user, and pulls the wire 12. The hook 33 and the projection 34 are configured to be disengaged. The fixed base 17 is disposed below the armrest 30 on the front side of the pivot shaft 181 of the armrest 30.

  When the user applies a force to the operation portion 111 of the lever 11, a force is applied to the action portion 112 in the direction along the front-rear direction of the flange 7, and the wire 12 connected to the action portion 112 is pulled. A hook 33 is connected to the wire 12. The hook 33 is biased by the torsion spring 15 toward the pin-shaped protrusion 34, but when the wire 12 is pulled, the hook 33 is pulled in a direction opposite to the bias by the torsion spring 15, and the hook 33 Is moved away from the protrusion 34. When the hook 33 moves away from the protrusion 34, the restriction of the rotation of the hook 33 by the protrusion 34 is released.

  Thus, the user can rotate the armrest 30. Since the restriction of the rotation of the hook 33 is released when the wire 12 is pulled, for example, the wire 12 can be used as the connecting member.

  On the other hand, when the user does not operate the lever 11, the hook 33 is biased toward the projection 34 by the torsion spring 15, and the rotation of the hook 33 is restricted.

  As described above, it is possible to provide an armrest structure for a portable toilet that allows the user to easily release the rotation restriction of the armrest 30 by operating the lever 11 of the armrest 30 with a simple structure. .

  In addition, the fixed portion 182 fixed to the armrest 30 is held horizontally from below in front of the pivot shaft 181 of the armrest 30 by the fixing base 17 fixed to the collar 7, so that the user can use the toilet seat 2. Even when the armrest 30 is held, it is difficult to wobble.

  Further, since the rotation range of the lever 11 is regulated by the lever stopper 16, it is possible to prevent the user from rotating the lever 11 more than necessary, and to prevent damage to the lever 11, the wire 12, and the hook 33. .

  Other configurations and effects of the portable toilet armrest 30 structure of the third embodiment are the same as those of the first embodiment.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.

  100: toilet, 6: backrest, 7: heel, 10, 30: armrest, 11: lever, 111: operation section, 112: action section, 114: pivot axis of lever, 12: wire, 13: lock pin, 14 : Heel side fixture, 141: recess, 142: lower part of recess, 143: inner bottom surface of recess, 144: return slope, 15: torsion spring, 16: lever stopper, 17: fixing base, 172: rear wall, 173: Horizontal wall, 181: pivoting shaft of armrest, 182: fixed portion, 24: plate, 33: hook, 34: protrusion.

Claims (12)

An armrest that is pivotally attached to a heel that supports the backrest;
An operation for allowing the user to operate the rotation of the armrest, having an operation portion that is rotatably attached to the armrest, and an operation portion on which the user applies a force and an action portion on which the force applied to the operation portion acts Members,
A connecting member connected to the action part;
A pin-shaped connected member attached to the rear part of the armrest and connected to the connecting member;
A heel-side fixture that is attached to the heel and regulates the rotation of the connected member;
An urging member for urging the coupled member toward the heel side fixture;
A restricting means for restricting a rotation range of the operation member;
A support portion that is fixed to the heel and horizontally supports the armrest;
A supported portion disposed on the armrest so as to abut on the support portion when the armrest extends horizontally,
The operation member is configured to change a direction of a force exerted on the action portion to a direction along the front-rear direction of the heel when a force is applied to the operation portion by a user, and pull the connection member. , Configured to release the rotation restriction of the connected member by the heel side fixture,
The armrest structure for a portable toilet, wherein the support portion is disposed below the armrest on the front side of the pivot shaft of the armrest. The connected member is attached to the armrest on the rear side of the pivot shaft of the armrest ,
The biasing member biases the connected member rearward ,
The armrest structure for a portable toilet according to claim 1, wherein the heel-side fixture has a recess that accommodates the connected member that is urged by the urging member, and the recess opens on the front side. . The armrest structure of the portable toilet according to claim 2, wherein an inclined surface is formed on an outer lower surface of the recess so as to increase in height from a rear side of the heel toward a front side of the heel. . The operation member is configured such that when the user applies a force to the operation unit, the action unit rotates from above to below and from the back to the front,
Inner bottom surface of the recess, is an inclined surface such that the height decreases toward the rear side of the stile to the direction of the opening side of the front side of the stile, according to any one of claims 2 or 3 Portable toilet armrest structure. The armrest structure of the portable toilet according to any one of claims 1 to 4, wherein the connected member is disposed so as to protrude toward a side surface of the bag. The biasing member is a torsion spring;
The armrest structure of the portable toilet according to any one of claims 1 to 5 , wherein one end portion of the torsion spring is disposed so as to contact the connected member. An armrest that is pivotally attached to a heel that supports the backrest;
An operation for allowing the user to operate the rotation of the armrest, having an operation portion that is rotatably attached to the armrest, and an operation portion on which the user applies a force and an action portion on which the force applied to the operation portion acts A member,
A connecting member connected to the action part;
A hook attached to the rear of the armrest and connected to the connecting member;
A pin-shaped heel-side engagement tool that is attached to the heel so as to be engageable with the hook and restricts the rotation of the hook;
A biasing member that biases the hook toward the hook-side engaging tool;
A restricting means for restricting a rotation range of the operation member;
A support portion that is fixed to the heel and horizontally supports the armrest;
A supported portion disposed on the armrest so as to abut on the support portion when the armrest extends horizontally,
The operation member is configured to change a direction of a force exerted on the action portion to a direction along the front-rear direction of the heel when a force is applied to the operation portion by a user, and pull the connection member. , Configured to release the engagement between the hook and the heel side engagement tool,
The armrest structure for a portable toilet, wherein the support portion is disposed below the armrest on the front side of the pivot shaft of the armrest. The operation portion and the action portion are arranged so that a line connecting the operation portion and the rotation axis of the operation member is substantially orthogonal to a line connecting the action portion and the rotation axis of the operation member. The armrest structure for a portable toilet according to any one of claims 1 to 7 . The armrest structure for a portable toilet according to any one of claims 1 to 8 , wherein the operation member is disposed such that the operation portion is positioned below the armrest. The portable toilet armrest structure according to any one of claims 1 to 9 , wherein the support portion has a side surface that comes into contact with the armrest when the armrest is rotated so as to extend vertically. The support portion extends parallel to the side face of the stile, the armrest has an abutting wall portion on the side surface of the armrest when extending horizontally, any one of claims 1 to 10 The portable toilet armrest structure described in 1.   The armrest structure of the portable toilet according to any one of claims 1 to 11, wherein a wave washer that is elastically deformable along an axial direction is disposed on the pivot shaft.

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