JP2008154948A - Elevating/lowering type reclining chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevating/lowering type reclining chair which prevents inconvenience from occurring during the lowering of the seat. <P>SOLUTION: Under the seat, there is provided detecting means for detecting contact with an object during the lowering of the seat, making it possible to stop lowering the seat or to start elevating it during such detection. As a result, the elevating/lowering type reclining chair can be provided which prevents inconvenience from occurring during the lowering of the seat. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is an elevating type reclining seat in which an elderly person, a frail person, a handicapped person, and a handicapped person can elevate and lower a seatrest. Related to chairs.

FIG. 22 is a conceptual diagram of a lifting chair for a chair that is a premise of the present invention.
The sitting chair lifting / lowering base 1 shown in the figure is provided with two rotation shafts 4 and 5 penetrating in the width direction in the center lower part of the seat mounting base 2 in parallel with the horizontal direction. The upper portions of the swing support legs 6 and 7 are fixed to the portions of the shafts 4 and 5 protruding on both sides of the seat mounting table 2, and the gears 11 and 12 are fixed to the upper portions of the swing support legs 6 and 7, respectively. In addition, the gears 11 and 12 on the same side are meshed with each other, and a pressing operation piece 10 is provided on the upper end portion of either one of the swinging support legs 6 and 7, and the pressing operation piece 10 is swung in the up-and-down direction on the seat mounting table 2. The piston 13 is movably connected to the tip of the piston rod 13a of the cylinder 13 which is movably mounted, and the swing support legs 6 and 7 on the same side are operated in the opening / closing direction through the pushing and retracting of the piston rod 13a. It is what I did.
In the figure, 2a is a bottom plate, 2b is a side wall, 2c is a support plate, 3 is an armrest, 8 and 9 are wheels, 14 is a support plate, 15 is a shaft, 16 is a connecting pin, and 17 is a seat chair.
Japanese Patent No. 3741690

  However, the above-described conventional technology cannot be operated by a handicapped person.

  Accordingly, an object of the present invention is to provide a liftable reclining seat chair that can be operated by a handicapped person.

  In order to solve the above-mentioned problem, the invention described in claim 1 is characterized in that two upper and lower joints are respectively arranged at the rear ends of the left and right side surfaces of the rectangular plane frame for supporting the seat, and are respectively connected to the respective joints. Each link forms a four-bar rotation mechanism, and a wheel is provided on each of the legs that extend downward from the link that connects to the joint that can be the lowest end of the links of both the four-bar rotation mechanisms. A beam member movable in the front-rear direction is provided, and the lower link connected to the joint of the frame of the links of the four-joint rotation mechanism and the beam member are connected by the joint and the link. An elevating type reclining seat chair configured to move the seat member up and down by moving the beam member in the front-rear direction by a moving mechanism, A backrest that can be raised and lowered by a raising / lowering mechanism, a headrest provided at the upper end of the backrest, and an upper and lower end of the backrest. And an operating means for performing the raising / lowering operation of the rest.

  According to the first aspect of the present invention, the user sitting on the seat seat operates the operating means with his / her mouth to raise or lower the seat seat, raise the backrest, or defeat the seat. be able to. Accordingly, it is possible to provide an elevating reclining seat chair that can be operated by a handicapped person.

  According to a second aspect of the present invention, a rectangular planar frame that supports the seat, a beam member that is provided in the frame and is slidable in the front-rear direction by a guide member, and disposed at the rear end of one side surface of the frame A first joint that is disposed at a predetermined distance above the first joint of the frame and has a first link between the first joint and the upper end of the first joint. A second link connected to the second joint, a third link having an upper end connected to the lower end of the second link and a third joint, and a lower end connected to the lower end of the third link and a fourth link. A fourth link connected by a joint and having an upper end connected by the first joint; a fifth joint disposed at an end of the beam member closer to the fourth link; 5 joints A fifth link connected, a sixth joint disposed on the upper end side of the fourth link and connected to the other end of the fifth link, and the fourth joint side from the fourth link A first leg having a wheel at the lower end, a second leg extending from the third link to the fourth joint side at a predetermined angle and having a wheel at the lower end, and the other of the frame An eighth joint disposed between the seventh joint disposed at the rear end of the side surface and the seventh joint of the frame by a predetermined distance and having an eighth link between the seventh joint and the seventh joint A seventh link having an upper end connected to the eighth joint, an eighth link having an upper end connected to the lower end of the seventh link and a ninth joint, and a lower end corresponding to the eighth link. The bottom end of the joint and the tenth joint A ninth link having an upper end connected by the seventh joint, an eleventh joint disposed at an end of the beam member closer to the ninth link, and an end having the eleventh joint A tenth link connected to the tenth link, a twelfth joint disposed on the upper end side of the ninth link and connected to the other end of the tenth link, and the tenth link to the tenth joint A third leg having a wheel at the lower end and a wheel at the lower end; a fourth leg having a wheel at the lower end extending at a predetermined angle from the eighth link to the tenth joint; An elevating reclining seat chair provided with a moving mechanism that moves the beam member back and forth by moving the beam member in the front-rear direction, and is tiltable by a tilting mechanism provided on the frame. back A rest, a headrest provided at an upper end of the backrest, and an operation means provided on the headrest for performing the lifting and lowering operation of the frame and the backrest by a user's mouth. It is characterized by.

  According to the second aspect of the present invention, the user sitting on the seat seat operates the operating means with his / her mouth, thereby raising or lowering the seat seat, raising or lowering the backrest. be able to. Accordingly, it is possible to provide an elevating reclining seat chair that can be operated by a handicapped person.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the raising and lowering mechanism includes a first bearing base provided at the center of the rear upper end of the frame, and an upper rear end of the frame. A plurality of second bearing bases connected to the lower end of the backrest by a predetermined distance on both the left and right sides; a third bearing base provided at the center of the backside upper end of the backrest; Is connected to the first bearing pedestal and the third bearing pedestal, and includes a telescopic mechanism for raising and lowering the backrest by extending and contracting, and the operating means has one end at the upper end of the backrest. At least one arm provided in the vicinity of the headrest and extending to the vicinity of the user's mouth, and provided at the other end of the arm. Characterized by comprising a joystick for performing electromotive 倒操 operation crest.

  According to a third aspect of the present invention, the raising / lowering mechanism is provided on the upper front side by a predetermined distance on both the left and right sides of the upper rear end of the frame and the first bearing base provided in the center of the rear upper end of the frame. A second bearing pedestal connected to the lower end of the backrest, a third bearing pedestal provided in the center of the backside upper end of the backrest, and both ends to the first bearing pedestal and the third bearing pedestal And a telescopic mechanism that raises and lowers the backrest by extending and contracting, and the operating means is at least one arm provided at one end near the headrest at the upper end of the backrest and extending near the user's mouth And a joystick provided at the other end of the arm for moving the frame up and down and raising and lowering the backrest with the user's mouth. By operating in countercurrent, or raise the seat sheet, or lowered, or causing the backrest, or can defeat. Accordingly, it is possible to provide an elevating reclining seat chair that can be operated by a handicapped person.

  The invention according to claim 4 is a pair of arms according to any one of claims 1 to 3, wherein one end is provided at both left and right ends of the upper end of the backrest and extends to the vicinity of the mouth of the user. A short-axis operation type joystick provided at the other end of the one arm for moving the frame up and down by the user's mouth, and provided at the other end of the other arm. And another short-axis operation type joystick for performing the raising / lowering operation of the flap rest through the mouth.

  According to the fourth aspect of the present invention, one end is provided at the left and right ends of the upper end of the backrest and is extended to the vicinity of the user's mouth, and is provided at the other end of the one arm. A short-axis operation type joystick for moving the frame up and down by the mouth, and another short-axis operation type for moving the backrest up and down by the user's mouth. With the joystick, the seat seat can be lifted and lowered with one joystick, and the backrest can be tilted with the other joystick. Accordingly, it is possible to provide an elevating reclining seat chair that can be operated by a handicapped person.

  The invention according to claim 5 is the invention according to any one of claims 1 to 3, wherein one arm is provided at an upper end of the backrest and extends to the vicinity of the mouth of the user; A biaxial operation type joystick is provided at the other end of the arm and is used to raise and lower the frame and raise and lower the backrest with the mouth of the user.

  According to the invention described in claim 5, by using a two-axis operation type joystick, a user with a handicap can move one side without changing the face direction from right to left or from left to right. The seat seat can be raised and lowered and the backrest can be raised and lowered while facing.

  According to a sixth aspect of the invention, in the invention of the fourth or fifth aspect, the arm is made of a flexible material.

  According to the invention described in claim 6, since the arm is made of a flexible material, the assistant adjusts the position of the joystick in accordance with individual differences in the position of the mouth of the handicapped user. be able to. Moreover, when trying to fold the backrest for transportation, the headrest can be matched with the seat by avoiding from between the headrest and the seat.

  A seventh aspect of the invention is characterized in that, in the fifth or sixth aspect of the invention, one end of the arm is rotatably provided on the upper end of the backrest via a bearing.

  According to the seventh aspect of the invention, the arm is provided at one end of the arm at the upper end of the backrest so as to be rotatable via the bearing, so that the assistant can move from the position of the head of the user who is handicapped. The joystick can be moved to the mouth position. Moreover, when trying to fold the backrest for transportation, the headrest can be matched with the seat by avoiding from between the headrest and the seat.

  According to the present invention, the user sitting on the seat can operate the operating means with his / her mouth, thereby raising, lowering, raising the backrest, or tilting the seat. Accordingly, it is possible to provide an elevating reclining seat chair that can be operated by a handicapped person.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
For simplicity of explanation, the battery charger, the AC adapter, and the like are omitted.
(Constitution)
FIG. 1 is a front view showing an embodiment of an elevating reclining seat chair. FIG. 2 is an external perspective view of the elevating reclining seat chair shown in FIG. FIG. 3 is a right side view of FIG. FIG. 4 is a right side view of the liftable reclining seat chair shown in FIG. 3 with all leg covers removed. FIG. 5 is a left side view of the elevating seat chair shown in FIG. 2 after the leg cover is removed. FIG. 5 is a left side view of FIG. 4. FIG. 6 is an external perspective view of the liftable reclining seat chair shown in FIG. 2 with all leg covers and seats removed. However, the armrest is raised for easy viewing.

  1 to 6, an elevating seat chair 100 is a substantially rectangular planar L-shaped metal (for example, aluminum) frame 122, a seat 101 supported on the frame 122, and a frame 122. Armrests 118 and 518 fixed on arms 117 and 517 extending from the rear end to the front end (left end to right end in FIG. 4), and a backrest 120 provided at the rear end (left side in FIG. 4) of the frame 122 And a headrest 121 detachably provided at the upper end of the backrest 120.

At the upper end of the backrest 120, operating means 130-1 and 130-2 are provided for elevating and lowering the seat seat (frame 122) and raising and lowering the backrest 120 by the user's mouth.
The operating means 130-1 has one end (left side in FIG. 1) provided on the support member 130-1a near the headrest 121 at the upper end of the backrest 120 and extending to the vicinity of the user's mouth, It is provided with the other end (right side in this case) of the arm 130-1b, and is comprised with the short axis | shaft type joystick 130-1c for performing raising / lowering operation of the seat 101 by a user's mouth. The joystick 130-1c includes a base portion 130-1ca and a shaft 130-1cb.

  One end (right side in FIG. 1) of the operation means 130-2 is provided on the support member 130-2a in the vicinity of the headrest 121 at the upper end of the backrest 120 and extends to the vicinity of the user's mouth, It is provided at the other end (in this case, the right side) of the arm 130-2b, and is composed of a short-axis joystick 130-2c for performing the raising / lowering operation of the backrest 120 by the user's mouth. The joystick 130-2c includes a base portion 130-2ca and a shaft 130-2cb.

  Here, since the shafts 130-1cb and 130-2cb are directly inserted into the mouth of the user, it is preferable to use a material subjected to antibacterial treatment or a material processed with Teflon (registered trademark). In addition, the rotation direction of the shafts 130-1cb and 130-2ca is set to a direction that can be easily operated while being added by the user. That is, the user is set to rotate in the direction of raising or lowering the chin while adding the shaft 130-1cb or the shaft 130-2ca. Further, when the user removes the mouth from the shafts 130-1cb, 130-2ca, the shafts 130-1cb, 130-2ca return to the neutral state.

  As the seat sheet 101, for example, a metal plate member and a cushion covered with a vinyl cover are used. The arms 117 and 517 are made of metal (for example, aluminum), and the armrests 118 and 518 are made of, for example, wood (or resin). The arms 117 and 517 are provided so that they can be raised and lowered with respect to the frame 122.

As the backrest 120 and the headrest 121, a metal support (not shown) and a mesh (or lattice) frame covered with a cushion and further covered with a vinyl cover are used.
A skirt 116 is provided at the front end (right side in the figure) of the frame 122 so as to be able to be tilted about the hinges 301 and 302. As the skirt portion 116, for example, a metal plate-like member and a cushion covered with a vinyl cover are used.

The elevating seat chair 100 can be lowered from an uppermost position shown in the drawing to a lowermost position described later by an elevating mechanism described later.
Reference numerals 201 and 202 denote leg covers made of a resin such as vinyl, and reference numerals 203 and 204 denote reinforcing plates made of metal (for example, aluminum) bridged between the leg portions.

Next, with reference to FIG.4 and FIG.7, the raising / lowering mechanism of a raising / lowering type reclining seat chair is demonstrated.
7 is a partially enlarged view of the frame of the elevating seat chair shown in FIG.
A first joint (shaft and bearing) 109 is provided at the rear end (left end in FIG. 4) 122B of one side surface (the surface shown in FIG. 4) 122R of the frame 122 shown in FIG. First upward from the joint 109 on one side surface 122R of the frame 122 by a predetermined position (for example, a position forward by an angle θ1 “about 10 degrees” at a distance of about one fifth of the longitudinal length L1 of the frame 122). Two joints 110 are provided. A first link 104 indicated by a broken line is formed between the joints 109 and 110.

One end (upper end in FIG. 4) of a rod 105 having a predetermined length as a second link (about 5/8 of the length L1 in the front-rear direction of the frame 122) is connected to the joint 110. One end (upper end in FIG. 4) of a plate-like member 107 having a predetermined length as a fourth link (about 5/8 of the length L1 in the front-rear direction of the frame 122) is connected to the joint 109. The other end (the lower end in this case) of the rod 105 is connected to one end (the upper end in FIG. 4) of a plate-like member as the third link 106 (for example, about one half of the length of the first link 104). The third joint 103 is connected. The plate-like member 106 and the plate-like member 107 are connected by the fourth joint 102.
The joint 109, the link 104, the joint 110, the rod 105, the joint 103, the plate-like member 106, the joint 102, and the plate-like member 107 constitute a four-bar rotation mechanism.

A first leg 125 having a length substantially equal to the length of the plate-like member 107 is extended from the plate-like member 107 to the joint 102 side, and a wheel (front wheel) 113 is provided at the end (lower end in FIG. 4). ing.
A second leg 114 having a length approximately in the front-rear direction of the seat 101 is extended from the plate-like member 106a toward the joint 102 by a predetermined angle θ2 (for example, about 60 degrees). A wheel (rear wheel) 115 is provided at the lower end in FIG. The link 106 and the leg 114 are integrated and formed in an S shape, but the present invention is not limited to this.

  A beam member 124 is provided in the frame 122 so as to be slidable in the front-rear direction (left-right direction in FIG. 4) in the left-right direction (direction perpendicular to the paper surface in FIG. 4). One end of the beam member 124 (in this case, the end shown in the drawing) is one end of an arm 108 (for example, about one half of the length of the frame 122 in the front-rear direction) as a fifth link. (The right end in FIG. 4) is connected by the fifth joint 111. Projecting in a direction perpendicular to the plate-like member 107 from the joint 109 between the joint 109 and the joint 102 of the plate-like member 107 to a position about one third of the length between the joints 102 and 109. A portion 123 is formed. The length of the protrusion 123 is, for example, about one third of the length between the joints 102 and 109. The end of the protrusion 123 and the other end of the arm 108 (in this case, the left end) are connected by a sixth joint 112.

These are the fourth joint 102, the third joint 103, the first link 104, the second link (rod) 105, the plate-like member 106a including the third link 106, and the fourth link (plate-like member). 107, fifth link (arm) 108, first joint 109, second joint 110, fifth joint 111, sixth joint 112, second leg 114, and first leg 125. An elevating mechanism is configured.
Further, a booster mechanism is configured by the joint 111, the arm 108, the joint 112, and the virtual link between the joint 109 and the joint 112.
In the figure, reference numeral 119 denotes a shaft for raising and lowering the arm 117.

FIG. 5 is a left side view of the elevating seat chair shown in FIG. 2 after the leg cover is removed.
Each member of the liftable seat 100 shown in FIG. 5 has the same configuration as each member of the liftable chair 100 shown in FIG.
That is, 509 is an eighth joint and corresponds to the first joint 109. Reference numeral 504 denotes a sixth link corresponding to the first link 104. The rod 505 is a seventh link and corresponds to the second rod 105. Reference numeral 503 denotes a ninth joint, which corresponds to the third joint 103. 506 a includes an eighth link 506 and corresponds to the plate-like member 106 a including the third link 106. Reference numeral 502 denotes a tenth joint, which corresponds to the fourth joint 102. Reference numeral 507 denotes a ninth link corresponding to the plate-like member 107 that is the fourth link. 512 is a third leg, which corresponds to the first leg 125. Reference numeral 514 denotes a fourth leg, which corresponds to the second leg 114. Reference numeral 511 denotes an eleventh joint, which corresponds to the fifth joint 111. Reference numeral 508 denotes a tenth link corresponding to the arm 108 which is the fifth link. Reference numeral 512 denotes a twelfth joint, which corresponds to the sixth joint 112. The protrusion 523 corresponds to the protrusion 123. The wheel 513 corresponds to the wheel 113, and the wheel 515 corresponds to the wheel 115. The axis 519 corresponds to the axis 119.

  6 and 7, two guide rods 605 and 606 are provided in the frame 122 in the vicinity of both side plates 122R and 122L of the frame 122 along the front-rear direction (left-right direction in FIG. 6) from the front end 122F to the rear end 122B. Is arranged. Two through holes 701 and 702 are formed in the beam member 124 described above. The guide rods 605 and 606 pass through both the through holes 701 and 702, and the beam member 124 is slidably disposed along the guide rods 605 and 606.

  A motor 601 is fixed to the rear end 122B side in the frame 122, and a gear portion 602 including a ball screw is connected to an output shaft of the motor 601. The gear part 602 is connected to the cylinder 603. A tip end portion 607 a of the piston rod 607 of the cylinder 603 is fixed to the beam member 124. The motor 601, the gear unit 602, and the cylinder 603 constitute a moving mechanism (for example, a linear actuator LAM-1 manufactured by HIWIN). Note that the piston rod 607 may be driven by air pressure using a motor, an air compressor and an air cylinder instead of the linear actuator, or the piston rod 607 may be driven by hydraulic pressure).

  A battery (not shown) (for example, a lithium ion battery, a nickel hydride battery, a nickel cadmium battery, or a lead storage battery) is mounted on the rear end 122B side of the frame 122, and a motor is operated by operating the operation means 130-1 and 130-2. A DC voltage is applied to 601 and a motor 161 described later. Furthermore, the battery is connected to a charger via a connection cable (not shown) to be charged.

  For example, a DC motor is used as the motor 601, and the rotation direction of the motor 601 is switched by switching the rotation direction, and the piston rod 607 in the cylinder 603 is pushed out and retracted. As the piston rod 607 is pushed out and retracted, the beam member 124 moves in the frame 122 in the front-rear direction (left-right direction in FIG. 7). The air cylinder 603 is provided with a limit switch (for example, a micro switch), determines whether the position of the piston rod 607 is located at the front dead center or the rear dead center, and sends information to a sequencer (not shown), The frame 122 can be stopped at the uppermost position or the lowermost position.

  One end of the rod 614 (the left end in FIGS. 6 and 7) is fixed substantially at the center of the front end 124a of the beam member 124. The rod 614 is fixed so as to be parallel to the guide rods 605 and 606, and the other end (in this case, the right end) passes through a through hole 703 formed in the front end 122 </ b> F of the frame 122. The length of the rod 614 is such that when the frame 122 of the elevating seat 100 is positioned at the top, the front end 614a substantially coincides with the surface of the front end 122F of the frame 122.

Springs 609 and 610 are provided between the beam member 124 and the rear end 122B of the frame 122 so as to bias the beam member 124 toward the rear end 122B (left side in FIGS. 6 and 7). . In addition, springs 611, 612, and 613 having a length that is approximately two-thirds of the length of the rod 614 are slidably wound around the guide rods 605 and 606 and the rod 614. These springs 611 to 613 are configured to urge the beam member 124 toward the rear end 122B when the beam member 124 contacts and is compressed when the beam member 124 moves toward the front end 122F of the frame 122.
These springs 611 to 613 are for reducing the burden on the motor 601 by assisting the energy required to raise the frame 122 for each user.

Next, with reference to FIGS. 12-16, the raising / lowering mechanism (reclining mechanism) of a raising / lowering reclining seat chair is demonstrated.
FIG. 12 is a partial rear view when the cover is removed from the backrest of the liftable reclining seat chair shown in FIG. 1. FIG. 13 is a partial external perspective view of the liftable reclining seat chair shown in FIG. 12 when viewed obliquely from behind. 14 is a partially enlarged view of the vicinity of the first bearing base shown in FIG. FIG. 15 is a partially enlarged view of the vicinity of the second bearing base shown in FIG. FIG. 16 is a partially enlarged view of the vicinity of the third bearing base shown in FIG. However, the arms 117 and 517 are omitted in FIGS.

  12 and 13, the raising / lowering mechanism includes a first bearing pedestal 131 provided at the center of the rear upper end of the frame 122 and a position (for example, an upper position forward of a predetermined distance on both the left and right sides of the upper rear end of the frame 122. A pair of second bearing bases 132 (133) provided at about one-ninth of the longitudinal length L1 of the frame 122 and at a depression angle of 45 degrees) and connected to the lower end of the backrest 120 (see FIG. 4). ), A third bearing pedestal 134 provided at the center of the upper end of the back side of the backrest 120 (opposite to the user), and both ends are connected to the first bearing pedestal 131 and the third bearing pedestal 134. It is comprised with the expansion-contraction mechanism which raises / lowers the backrest 120 by connecting and expanding / contracting.

The backrest 120 (see FIG. 1) includes a support column 150 having a shaft 132c parallel to the width direction of the frame 122 at the lower end, and a shaft 133c arranged parallel to the support column 150 and coaxially with the shaft 132c at the lower end. The backrest frame 155 is composed of another supporting column portion 151 having a cross section and beam portions 152 and 153 bridged so as to be orthogonal to the supporting column portions 150 and 151 at both ends of the supporting column portions 150 and 151.
The shaft 132c and the shaft 132c are separate shafts, but may be a single shaft.

A backrest plate (for example, wood or resin) 154 is affixed to the front side (user side) of the frame 155, and a third bearing pedestal 134 is provided at the center of the back side of the beam portion 152. It has been.
The beam portion 152 is provided with fixing portions 140 and 141 having through holes 140a and 141a for inserting and fixing leg portions (not shown) of the headrest 121 (see FIG. 1).
The support members 130-1a and 131-1a of the operation means 130-1 and 130-2 are inserted into the openings 150a and 151a at the upper ends of the support columns 150 and 151, respectively.
A motor 161 and a control device 137 for controlling the rotation of the motor 601 (see FIG. 6) are provided on the back side of the backrest plate 154. Note that the wiring between the motors 161 and 601 and the control unit 137 is omitted.

  The first bearing base 131 shown in FIG. 14 has a U-shaped cross section, and the bottom is fixed to the plate-like member 138 with screws 131d. Through holes are formed in the pair of side walls 131a of the first bearing base 131, respectively. A lower end of the piston rod 164 is disposed between both side walls 131a of the first bearing base 131, and passes through a through hole formed in the lower end of the piston rod 164 and a through hole of the first bearing base 131. A pin 131b is inserted as described above. A split pin 131c for preventing removal is inserted into a hole at the tip (left end in FIG. 14) of the pin 131b.

  The plate member 138 is detachably attached to the frame 122 by a thumbscrew 139. The backrest 120 can be tilted toward the seat (see FIG. 1) 101 by rotating the thumbscrew 139 to remove the plate-like member 138 from the frame 122. This makes it easy to fold and transport the liftable reclining seat chair (see FIG. 21).

The second bearing base 132 shown in FIG. 15 is one second bearing base provided on both sides of the upper rear end of the frame 122. The bearing pedestal 132 is two rectangular extension parts 132a and 132b extending upward from the rear part of the frame 122, and the shaft holes 132aa and 132ba through which the shaft 132c provided at the lower end of the column part 150 passes. Have A joint 510 shown in FIG. 5 is provided on one (outside in the drawing) extending portion 132a of the second bearing base 132.
The second bearing pedestal 133 has a bilaterally symmetrical structure with respect to the second bearing pedestal 132, and a description thereof will be omitted.

  The third bearing pedestal 134 shown in FIG. 16 has a U-shaped cross section like the first bearing pedestal 131, and the bottom is fixed to the beam portion 152 with screws 134d. Through holes are formed in the pair of side walls 134a of the third bearing base 134, respectively. A protruding portion 162a provided on the opposite side of the cylinder 163 of the gear portion 162 including the ball screw is disposed between both side walls 134a of the third bearing base 134, and a through hole formed at the upper end of the protruding portion 162a. And a pin 134b is provided so as to penetrate through the through hole of the third bearing base 134. A split pin 134c for preventing removal is inserted into a hole at the tip (left end in FIG. 16) of the pin 134b.

  These motor 161, gear portion 162, cylinder 163, and piston rod 164 constitute a linear actuator (for example, a linear actuator LAM-1 manufactured by HIWIN). In place of the linear actuator, a motor, an air compressor and an air cylinder are used. May be used to drive by air pressure or may be driven by oil pressure).

  Next, FIG. 17 (a) is an example of a block diagram for controlling a motor used in the lifting mechanism used in the lifting / lowering reclining seat shown in FIG. 1, and FIG. It is an example of the block diagram for controlling the motor used for the raising-lowering mechanism used for the raising / lowering type reclining seat chair shown in FIG.

In FIG. 17A, one end (the lower end in the figure) of the fixed portion is grounded, and the variable resistor VR1 to which the power supply voltage is applied to the other end (the upper end in this case) has a slider CP1. Are connected to the inverting input terminal of the comparator CP2.
One end (the lower end in this case) of the fixed portion is grounded, and the semi-fixed resistor VR2 whose power supply voltage is applied to the other end (the upper end in this case) has its slider connected to the inverting input terminal of the comparator CP1. Has been.
One end (the lower end in this case) of the fixed portion is grounded, and the semi-fixed resistor VR3, to which the power supply voltage is applied to the other end (the upper end in this case), has a slider connected to the non-inverting input terminal of the comparator CP2. It is connected. The output ends of both comparators CP1 and CP2 are connected to pull-up resistors R1 and R2, respectively, and to a motor drive circuit D1.

  The motor drive circuit D1 controls the rotation of the motor 601 according to the input signal. For example, when a signal of “0” logic level is applied to the port P1 and a signal of “1” logic level is applied to the port P2, the motor 601 (for raising and lowering) is rotated forward to the ports P3 and P4. The voltage to be output is output. When a signal having a logic level of “1” is applied to the port P1 and a signal having a logic level of “0” is applied to the port P2, a voltage that reversely rotates the motor 601 is output to the ports P3 and P4. When a “0” logic level signal is applied to the port P1 and a “0” logic level signal is applied to the port P2, the voltages of the ports P3 and P4 are set to 0 volts. The motor 601 is driven by the motor drive circuit D1. Capacitors C1 and C2 are bypass capacitors.

  The variable resistor VR1 is connected to a shaft 130-1cb of an analog joystick (hereinafter referred to as joystick) 130-1c of the operating means 130-1. The slider of the variable resistor VR1 slides with the change from the neutral state to the tilted state of the shaft 130-1cb, and is used to raise and lower the seat sheet 101 (see FIG. 1). It is done. The semi-fixed resistor VR2 and the semi-fixed resistor VR3 are for setting a threshold value, that is, for preventing the outputs of both the comparators CP1 and CP2 from being “1” logic level.

When the shaft 130-1cb of the joystick 130-1c is in a neutral state, the semi-fixed resistors VR2 and VR3 set the voltage at the non-inverting input terminal of the comparator CP1 to V ₁₊ and the voltage at the inverting input terminal of the comparator CP1 to V _{1. −} , Where the voltage at the non-inverting input terminal of the comparator CP2 is V ₂₊ and the voltage at the inverting input terminal of the comparator CP2 is V ₂₋ , the voltages V ₁₊ , V ₁₋ , V ₂₊ , V ₂₋ Has the relationship of Equation (1).
V ₂₊ <V ₁₊ = V _2- <V _1- (1)

  That is, when the shaft 130-1cb is in a neutral state, the outputs of both the comparators CP1 and CP2 are both “0” logic levels, the outputs of the ports P3 and P4 of the motor drive circuit D1 are 0 volts, and the motor 601 is stopped. It becomes a state.

When the slider of the variable resistor VR1 is located on the power source side, that is, when the user's mouth with the shaft 130-1cb is raised (the chin is raised), each voltage V ₁₊ , V ₁₋ , V ₂₊ , V ₂₋ have the relationship of formula (2).
V ₂₊ <V ₁₋ <V ₁₊ = V ₂₋ (2)

  As a result, a signal of “0” logic level is applied to the port P1 of the motor drive circuit D1, and a signal of “1” logic level is applied to the port P2, and a predetermined voltage is applied from the motor drive circuit D1 to the motor 601. When applied, it rotates forward.

When the slider of the variable resistor VR1 is located on the ground side, that is, when the user's mouth with the joystick 130-1c is lowered (the chin is lowered), each voltage V ₁₊ , V ₁₋ , and V ₂₊ have the relationship of Formula (3).
V ₁₊ = V _2- <V ₂₊ <V _1- (3)

  As a result, a signal of “1” logic level is applied to the port P1 of the motor drive circuit D1, and a signal of “0” logic level is applied to the port P2, and a predetermined voltage is applied from the motor drive circuit D1 to the motor 601. Applied and reverse rotation.

In FIG. 17B, the variable resistor VR4, whose one end (the lower end in the figure) is grounded and the power supply voltage is applied to the other end (the upper end in this case), has a slider whose non-inverting input terminal of the comparator CP3 and the comparator It is connected to the inverting input terminal of CP4.
The semi-fixed resistor VR5 having one end (the lower end in the figure) grounded and the other end (the upper end in this case) applied with the power supply voltage has a slider connected to the inverting input terminal of the comparator CP3.
The semi-fixed resistor VR6 having one end (the lower end in the figure) grounded and the other end (the upper end in this case) applied with a power supply voltage has a slider connected to the non-inverting input terminal of the comparator CP4. The output ends of the comparators CP3 and CP4 are connected to the pull-up resistors R3 and R4 and to the motor drive circuit D2, respectively.

  The motor drive circuit D2 controls the rotation of the motor 161 according to the input signal. For example, when a “0” logic level signal is applied to the port P5 and a “1” logic level signal is applied to the port P6, the motor 161 (for raising / lowering) is normally rotated to the ports P7 and P8. When the “1” logic level signal is applied to the port P5 and the “0” logic level signal is applied to the port P6, the voltage that reversely rotates the motor 161 to the ports P7 and P8. When a signal having a logic level “0” is applied to the port P5 and a signal having a logic level “0” is applied to the port P6, the voltages at the ports P7 and P8 are set to 0 volts. The motor 161 is driven by the motor drive circuit D2. Capacitors C3 and C4 are bypass capacitors.

The variable resistor VR4 is connected to the shaft 130-2cb of the joystick 130-2c of the operation means 130-2.
That is, the slider of the variable resistor VR1 slides along the shaft 130-2ca of the joystick 130-2c from the neutral state to the tilted state, and the backrest 120 (see FIG. 1). Used to upset. The semi-fixed resistors VR5 and VR6 are used for setting a threshold value, that is, the outputs of both the comparators CP3 and CP4 are not set to the “1” logic level.

When the shaft 130-2cb of the joystick 130-2c is in a neutral state, the semi-fixed resistors VR5 and VR6 set the voltage at the non-inverting input terminal of the comparator CP3 to V ₃₊ and the voltage at the inverting input terminal of the comparator CP3 to V _{3. -} , Where the voltage at the non-inverting input terminal of the comparator CP4 is V _4+, and the voltage at the inverting input terminal of the comparator CP4 is V _4- , the voltages V ₃₊ , V _3- , V ₄₊ , V _4- Has the relationship of Equation (4).
V ₄₊ <V ₃₊ = V _4- <V _3- (4)

  That is, when the shaft 130-2cb of the joystick 130-2c is in a neutral state, the outputs of both comparators CP3 and CP4 are both “0” logic levels, and the outputs of the ports P7 and P8 of the motor drive circuit D2 are 0 volts. Thus, the motor 161 is stopped.

For this reason, when the slider of the variable resistor VR4 is located on the power source side, that is, when the user's mouth with the shaft 130-2cb of the joystick 130-2c is raised (the chin is raised) In this case, the voltages V ₃₊ , V ₃₋ , V ₄₊ , and V ₄₋ have the relationship of the formula (5).
V ₄₊ <V ₃₋ <V ₃₊ = V ₄₋ (5)

  As a result, a signal of “0” logic level is applied to the port P5 of the motor drive circuit D2, and a signal of “1” logic level is applied to the port P6, and a predetermined voltage is applied from the motor drive circuit D2 to the motor 161. When applied, it rotates forward.

Further, when the slider of the variable resistor VR4 is positioned on the ground side, that is, when the user's mouth with the shaft 130-2cb of the joystick 130-2c is lowered (the chin is lowered) The voltages V ₃₊ , V ₃₋ , V ₄₊ , and V ₄₋ have the relationship of Expression (6).
V ₃₊ = V ₄₋ <V ₄₊ <V ₃₋ (6)

  As a result, a “1” logic level signal is applied to the port P5 of the motor drive circuit D2, and a “0” logic level signal is applied to the port P6, so that the motor 161 rotates in the reverse direction.

(Operation)
Next, the raising / lowering operation | movement of the raising / lowering type reclining seat chair 100 shown in FIG. 1 is demonstrated with reference to drawings.
FIG. 8 is a diagram showing a state after the elevating reclining seat chair shown in FIG. 1 is lowered. FIG. 9 is a right side view of the liftable reclining seat chair shown in FIG. 8 when the leg cover is removed. 11 is a partially enlarged view of the frame after the elevating seat chair shown in FIG. 6 is lowered.

First, the case where the seat sheet 101 (frame 122) of the liftable reclining seat chair 100 is raised will be described.
When a user (not shown in the figure on the elevating reclining seat chair) raises his chin while adding the shaft 130-1cb of the joystick 130-1c at the mouth, the slider of the variable resistor VR1 is moved to the power source side. Move to. The comparator CP1 compares the voltage V _{1+ at} the non-inverting input terminal with the voltage V _{1− at the} inverting input terminal, and the comparator CP2 compares the voltage V _{2+ at the} non-inverting input terminal and the voltage V _{2- at the} inverting input terminal. When the voltages V ₁₊ , V ₁₋ , V ₂₊ , and V ₂₋ satisfy the condition of the formula (2), the input signal of the port P1 of the motor drive circuit D1 becomes “1” logic level, Since the input signal of the port P2 becomes “0” logic level, the motor 601 is rotated forward.

  When the motor 601 shown in FIG. 11 rotates forward, the gear portion 602 operates and the piston rod 607 of the cylinder 603 retreats into the cylinder 603. As the piston rod 607 is retracted, the beam member 124 moves to the left in FIG. At this time, the beam member 124 is urged to the left side in FIG. 11 by the springs 609 and 610, and is urged to the left side in FIG. 11 by the springs 611 to 613. For this reason, the motor 602 can push up the frame 122 for each user who is sitting on the seat 101 and is not shown in the figure with about half the output when there are no springs 609, 610, 611 to 613.

  When the beam member 124 moves to the left side in the liftable seat 100 shown in FIG. 9, the force when the beam member 124 moves is transmitted to the joint 112 of the protrusion 123 via the joint 111 and the arm 108. Since a leftward force is applied to the protrusion 123, a clockwise force is applied to the plate member 107. Accordingly, the leg 125 is tilted clockwise around the joint 109.

  On the other hand, the joint 109, the link 104, the joint 110, the rod 105, the joint 103, the plate-like member 106a, the joint 102, and the plate-like member 107 constitute a four-node rotation mechanism. When the member 107 tries to rise in the clockwise direction, the rod 105 raises the plate-like member 106a in the counterclockwise direction, so that the leg portion 114 also rises in the counterclockwise direction.

  Further, the tip end portion 614 a of the rod 614 exposed from the front end 122 F of the frame 122 is in contact with the skirt portion 116. When the frame 122 is raised, the weight of the skirt portion 116 always comes into contact with the tip portion 614a of the rod 614, and a force for pushing the rod 614 into the frame 122 is generated. Since this force is in the same direction as the force that moves the beam member 124 to the rear end 122B of the frame 122, the load on the motor 601 is reduced. Further, when a user (not shown) is sitting on the liftable chair 100, the user's calf rides on the skirt portion 116 so that the user's foot enters the frame 122. Is prevented.

  That is, the elevating seat chair 100 rises stably without the frame 122 wobbling due to the clockwise tilting of the four-bar rotation mechanism and the accompanying leg movement of the legs 114 and 125.

The beam member 124 shown in FIG. 7 moves to the left and the frame 122 shown in FIG. 4 rises, and when the user reaches a desired height, the user returns the jaw to the normal state and the joystick 130-1c. When the shaft 130-1cb is moved away from the mouth, the shaft 130-1cb is in a neutral state, the motor 601 is stopped, and the frame 122 is stopped at that height.
In addition, since the operation | movement of each part of the raising / lowering reclining seat chair 100 shown in FIG. 5 is also the same, description is abbreviate | omitted.

Next, the case where the frame 122 of the liftable reclining seat chair 100 is lowered will be described.
When the user on the elevating reclining seat chair shown in FIG. 1 lowers the chin while applying the shaft 130-1cb of the joystick 130-1c with the mouth, the slider of the variable resistor VR1 moves to the ground side. The comparator CP1 compares the voltage at the non-inverting input terminal with the voltage at the inverting input terminal. When the voltage at the non-inverting input terminal becomes larger than the threshold voltage, the output becomes “1” logic level, and the comparator CP2 outputs “0”. Use logical level. The motor drive circuit D1 rotates the motor 601 in the reverse direction because the input signal of the port P1 is “1” logic level and the input signal of the port P2 is “0” logic level.

  When the motor 601 shown in FIG. 7 rotates in the reverse direction, the gear portion 602 is activated and the piston rod 607 starts to be pushed out from the cylinder 603. When extrusion of the piston rod 607 to the right side is started, the beam member 124 starts to move to the right side in FIG.

When the beam member 124 moves to the right side in the elevating seat chair 100 shown in FIG. 1, the force at the time of movement is transmitted to the joint 112 of the protrusion 123 via the joint 111 and the arm 108. Since a rightward force is applied to the protrusion 123, a counterclockwise force is applied to the plate member 107. Therefore, the leg portion 125 is tilted counterclockwise about the joint 109.
In the four-bar rotation mechanism by the joint 109, the link 104, the joint 110, the rod 105, the joint 103, the plate-like member 106a, the joint 102, and the plate-like member 107, when the plate-like member 107 tries to be tilted counterclockwise, Since the rod 105 raises and lowers the plate member 106 in the clockwise direction, the leg portion 114 also rises and falls in the clockwise direction.

  Further, the front end portion 122F of the rod 614 from the front end 122F of the frame 122 shown in FIG. When the frame 122 descends, the skirt portion 116 always comes into contact with the tip portion 614a of the rod 614, and a force is generated to rotate the skirt portion 116 upward from the vertical state.

  Since the skirt portion 116 rotates upward, the skirt portion 116 comes into contact with the calf of the user, so that the user can keep his / her foot forward and prevent it from entering the lower side of the frame 122.

  As shown in FIG. 9, the frame 122 is stably lowered without wobbling due to the counterclockwise tilting of the four-bar rotation mechanism and the accompanying leg movement of the legs 114 and 125.

When the user returns to the normal state at the time when the user's desired low is reached and the shaft 130-1cb of the joystick 130-1c is moved away from the mouth, the shaft 130-1cb becomes neutral, The motor 601 is stopped and the frame 122 stops at that height.
In addition, since it is the same also about operation | movement of the raising / lowering seat 100 shown in FIG. 5, description is abbreviate | omitted.

  Here, when the frame 122 shown in FIG. 4 reaches the uppermost position or the lowermost position, this is detected by a sensor (or microswitch) (not shown) and the motor 601 is automatically stopped. .

Next, the case where the backrest 120 of the liftable reclining seat chair 100 is raised will be described.
When the user on the elevating reclining seat chair raises his chin while applying the shaft 130-1cb of the joystick 130-2c with the mouth, the slider of the variable resistor VR4 moves to the power source side. The comparator CP3 compares the voltage V ₃₊ of the non-inverting input terminal with the voltage V _3- of the inverting input terminal, and the comparator CP4 compares the voltage V ₄₊ of the non-inverting input terminal and the voltage V _{4- of the} inverting input terminal. When the voltages V ₃₊ , V ₃₋ , V ₄₊ , and V ₄₋ satisfy the condition of Expression (5), the input signal of the port P5 of the motor drive circuit D2 becomes “1” logic level, Since the input signal of the port P6 becomes “0” logic level, the motor 161 is rotated forward.

When the motor 161 shown in FIG. 10 rotates forward, the gear portion 162 is operated and the piston rod 164 of the cylinder 163 is pushed out from the cylinder 163. As the piston rod 607 is pushed out, a force is generated to extend the distance between the beam portion 152 of the backrest frame 155 (see FIG. 12) and the upper surface of the rear end of the frame 122. At this time, since the shafts 132c and 133c and the 131b pin 131b at the lower end of the piston rod 164 are parallel to each other and separated by a predetermined distance, a force is generated in the beam portion 152 in the direction of rising about the shafts 132c and 133c. Then, the backrest 120 gets up.
FIG. 10 is a diagram illustrating a state in which the backrest of the elevating reclining seat chair illustrated in FIG. 9 is tilted.

  When the backrest 120 of the lifting / lowering reclining seat 100 shown in FIG. 10 rises and reaches the user's desired angle on the lifting / lowering reclining seat chair, which is not shown in the figure, the user usually lifts the chin. When the shaft 130-2ca of the joystick 130-2c is released from the mouth, the shaft 130-2ca becomes neutral, the motor 161 is stopped, and the backrest 120 stops at that angle.

Next, the case where the backrest 120 of the elevating reclining seat chair 100 falls will be described.
When a user, not shown in the figure on the elevating reclining seat chair, lowers his chin while applying the shaft 130-1cb of the joystick 130-2c with his mouth, the slider of the variable resistor VR4 is moved to the ground side. Moving. The comparator CP3 compares the voltage V ₃₊ of the non-inverting input terminal with the voltage V _3- of the inverting input terminal, and the comparator CP4 compares the voltage V ₄₊ of the non-inverting input terminal and the voltage V _{4- of the} inverting input terminal. When the voltages V ₃₊ , V ₃₋ , V ₄₊ , and V ₄₋ satisfy the condition of Expression (6), the input signal of the port P5 of the motor drive circuit D2 becomes “0” logic level, Since the input signal of the port P6 becomes “1” logic level, the motor 161 is rotated in the reverse direction.

When the motor 161 shown in FIG. 12 rotates in the reverse direction, the gear portion 162 operates and the piston rod 164 of the cylinder 163 retreats into the cylinder 163. As the piston rod 607 is retracted, a force for reducing the distance is generated between the beam portion 152 of the backrest frame 155 and the upper surface of the rear end of the frame 122. At this time, since the shafts 132c and 133c and the 131b pin 131b at the lower end of the piston rod 164 are parallel to each other and are separated by a predetermined distance, a force is generated in the beam portion 152 in a direction in which the beam 132 is tilted about the shafts 132c and 133c. Then, the backrest 120 falls.
When the backrest 120 of the up-and-down reclining seat chair 100 shown in FIG. 10 falls, when the user reaches an angle not shown in the figure, the user returns the chin to the normal state and the joystick 130- When the 2c shaft 130-2ca is moved away from the mouth, the shaft 130-2ca becomes neutral, the motor 161 is stopped, and the backrest 120 stops at that angle.

  Here, when the extrusion length of the piston rod 164 shown in FIGS. 10 and 12 reaches the minimum value or the maximum value, this is detected by a sensor (or microswitch) not shown, and the motor 161 is automatically stopped. It has become.

  By the way, when the frame 122 of the lifting and lowering reclining seat 100 is lowered to the lowest position, the front and rear wheels 113 and 115 are positioned substantially at the front and rear of the frame 122, and the thumbscrew 139 shown in FIG. When the first bearing base 131 is removed, the backrest 120 is folded as shown in FIG. FIG. 21 is a view showing a state where the backrest of the elevating reclining seat chair shown in FIG. 1 is folded.

  Since the wheel 113, 115, 513, 515 does not jump forward and backward when the frame 122, that is, the seat sheet 101 is located at the lowest position, the lifting / lowering reclining seat chair 100 has wheels 113, 115, 513, There is no need to pack in consideration of damage 515, and the package after packing can be small.

  The above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the invention. is there.

  For example, in this embodiment, the case where a variable resistor and a comparator are used for controlling the motor has been described. However, the present invention is not limited to this, and may be configured by a switch, an inverter gate, and a resistor. Good.

FIG. 18A is another example of a block diagram for controlling a motor used in an elevating mechanism used in the elevating type reclining seat chair shown in FIG. 1, and FIG. It is another example of the block diagram for controlling the motor used for the raising-lowering mechanism used for the raising / lowering type reclining seat chair shown in FIG.
In the figure, it is assumed that the four inverter gates INV1 to INV4 are mounted in one IC package and connected to a bypass capacitor (not shown).

In FIG. 18A, the switch SW1 is connected to the shaft 130-1cb of the joystick 130-1c of the operation means 130-1. The switch SW1 is a three-contact type switch, which is normally in a neutral state and returns to a neutral state like Siemenssky (registered trademark) when left after contacting the movable contact with the upper or lower side of the figure. (Digital joystick).
When the switch SW1 is tilted to the upper side in the figure, the output of the inverter gate INV1 becomes “0” logic level, and the output of the inverter gate INV2 becomes “1” logic level.
As a result, a signal of “1” logic level is applied to the port P1 of the motor drive circuit D1, and a signal of “0” logic level is applied to the port P2, and a predetermined voltage is applied from the motor drive circuit D1 to the motor 601. Applied and reverse rotation.

When the switch SW1 is tilted downward, the output of the inverter gate INV1 becomes “1” logic level, and the output of the inverter gate INV2 becomes “0” logic level.
As a result, a signal of “0” logic level is applied to the port P1 of the motor drive circuit D1, and a signal of “1” logic level is applied to the port P2, and a predetermined voltage is applied from the motor drive circuit D1 to the motor 601. When applied, it rotates forward.

If the switch SW1 is left unattended, the output of the inverter gate INV1 becomes “0” logic level, and the output of the inverter gate INV2 becomes “0” logic level.
As a result, the application of voltage from the motor drive circuit D1 to the motor 601 is stopped, and the motor 601 is stopped.

In FIG. 18A, the switch SW2 indicates the joystick 130-2c of the operation means 130-2. Similarly to the switch SW1, the switch SW2 is a three-contact type switch, which is normally in a neutral state and returns to the neutral state after the movable contact is brought into contact with the upper side or the lower side in the figure.
Since the operation for FIG. 18B is the same as that of FIG.

In this embodiment, the number of operation means is two. However, the present invention is not limited to this, and the number of operation means may be one.
FIG. 19 is an explanatory diagram in a case where the seat seat is raised and lowered and the backrest is raised and lowered with one operating means.
The operating means includes one arm 130-3a provided at one end at the upper end of the backrest 120 and extending to the vicinity of the user's mouth, and the other end of the arm 130-3a. And a two-axis operation type joystick 130-3b for performing the lifting / lowering operation and the raising / lowering operation of the backrest 120.
That is, a user (not shown) of the liftable reclining seat chair moves the chin up and down with the mouth 130-3c of the joystick 130-3c added, and pushes and pulls the chin to raise the height of the seat. The angle of the backrest 120 is adjusted.

Furthermore, in the present embodiment, the case where the operating means protrudes to the front surface of the user has been described. However, the present invention is not limited to this, and a bearing is provided at the base of the arm as shown in FIG. The arm may be turned upward or the arm may be formed of a flexible member and bent.
FIG. 20 is an explanatory view showing a modification of the operating means used in the elevating reclining seat chair shown in FIG.

  Further, in this embodiment, the case where each leg portion is simply provided with a wheel has been described, but the present invention is not limited to this, and a caregiver is provided with a folding handle behind the back seat. It may be configured to push, stoppers may be provided on the legs, and geared motors are provided on both the left and right legs so that the wheels can be driven to rotate, so that the wheels can be moved forward, backward, turn, and super You may comprise. However, in this case, it is preferable that the caregiver operates instead of the user (caregiver). In addition, you may use as a lifting platform, without providing a wheel in each leg part.

  Further, in the present embodiment, the protrusion 123 is provided on the plate member 104 as the fourth link, the protrusion 523 is provided on the plate member 507 as the ninth link, and the sixth joint 112 is provided at both ends. However, the present invention is not limited to this, and both the joints 112 and 512 may be provided between the base portion and the end portion of the projections 123 and 523. .

  Furthermore, in the present embodiment, the angle θ1 “about 10 degrees at a distance of about one fifth of the length in the front-rear direction of the frame 122 from the joint 109 on one side surface 122R of the frame 122 by a predetermined position. Although the case where the second joint 110 is provided in the “front position” has been described, the present invention is not limited to this, and θ1 may be in the range of 0 to 15 degrees.

It is a front view which shows one Embodiment of a raising / lowering type reclining seat chair. It is an external appearance perspective view of the raising / lowering type reclining seat chair shown in FIG. It is a right view of FIG. FIG. 4 is a right side view of the liftable reclining seat chair shown in FIG. 3 with all leg covers removed. It is a left view after the leg cover removal of the elevating seat chair shown in FIG. It is the external appearance perspective view which removed the all leg cover and the seat from the raising / lowering type reclining seat chair shown in FIG. It is the elements on larger scale of the flame | frame of the raising / lowering seat chair shown in FIG. It is a figure which shows the state after the fall of the raising / lowering type reclining seat chair shown in FIG. It is a right view when the leg cover of the lifting type reclining seat chair shown in FIG. 8 is removed. It is a figure which shows the state which fell the backrest of the raising / lowering type reclining seat chair shown in FIG. It is the elements on larger scale of the flame | frame after the fall of the raising / lowering type seat shown in FIG. It is a partial rear view when a cover is removed from the backrest of the liftable reclining seat chair shown in FIG. It is a partial external appearance perspective view when the raising / lowering reclining seat chair shown in FIG. 12 is seen from diagonally behind. It is the elements on larger scale near the base for 1st bearings shown in FIG. It is the elements on larger scale of the 2nd bearing base vicinity shown in FIG. FIG. 13 is a partially enlarged view of the vicinity of a third bearing base shown in FIG. 12. (A) is an example of the block diagram for controlling the motor used for the raising / lowering mechanism used for the raising / lowering reclining seat chair shown in FIG. 1, (b) is the raising / lowering reclining shown in FIG. It is an example of the block diagram for controlling the motor used for the raising / lowering mechanism used for a seat chair. (A) is another example of the block diagram for controlling the motor used for the raising / lowering mechanism used for the raising / lowering type reclining seat chair shown in FIG. 1, (b) is the raising / lowering shown in FIG. It is another example of the block diagram for controlling the motor used for the raising / lowering mechanism used for a type | formula reclining seat chair. It is explanatory drawing in the case of raising / lowering a seat and raising / lowering a backrest by one operation means. It is explanatory drawing which shows the modification of the operation means used for the raising / lowering reclining seat chair shown in FIG. It is a figure which shows the state which folded the backrest of the raising / lowering type reclining seat chair shown in FIG. It is a conceptual diagram of the raising / lowering base for seat chairs used as the premise of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Lifting seat chair 101 Seat seat 102 4th joint 103 3rd joint 104 1st link 105 2nd link (rod)
106 Third link 106a Plate member 107 Fourth link (plate member)
108 Fifth link (arm)
109 First joint 110 Second joint 111 Fifth joint 112 Sixth joint 113 Wheel (front wheel)
114 Second leg 115 Wheel (rear wheel)
116 Skirt part 117 Arm 118 Armrest 119 Shaft 120 Backrest 121 Headrest 122 Frame 123 Projection part 124 Beam member 125 First leg part 130-1, 130-2 Operating means 155 Backrest frame

Claims (7)

Two joints are arranged at the rear ends of the left and right sides of the rectangular plane frame that supports the seat, and each of the four joints is formed by three links that are connected to each joint. Wheels are provided on the legs respectively extending downward from the link connecting to the joint that can be the lowest end of the links of the rotation mechanism, and beam members that are movable in the front-rear direction are provided in the frame. By connecting the lower link connected to the joint of the frame among the links of the node rotation mechanism and the beam member by a joint and a link, and moving the beam member in the front-rear direction by a moving mechanism An elevating reclining seat chair adapted to raise and lower the seat seat,
A backrest that can be raised and lowered by a raising and lowering mechanism provided on the frame;
A headrest provided at the upper end of the backrest;
An elevating type reclining seating chair provided on the upper end of the backrest, comprising operating means for elevating the frame and raising / lowering the backrest by a user's mouth. A rectangular planar frame that supports the seat;
A beam member provided in the frame and slidable in the front-rear direction by a guide member;
A first joint disposed at one side rear end of the frame;
A second joint disposed at a predetermined distance above the first joint of the frame and having a first link with the first joint;
A second link having an upper end coupled to the second joint;
A third link having an upper end connected to the lower end of the second link by a third joint;
A fourth link having a lower end connected to the lower end of the third link by a fourth joint and an upper end connected to the first joint;
A fifth joint disposed at the end of the beam member closer to the fourth link;
A fifth link having one end connected to the fifth joint;
A sixth joint disposed on the upper end side of the fourth link and connected to the other end of the fifth link;
A first leg extending from the fourth link to the fourth joint side and having a wheel at the lower end;
A second leg extending from the third link to the fourth joint side at a predetermined angle and having a wheel at a lower end;
A seventh joint disposed at the rear end of the other side surface of the frame;
An eighth joint disposed above the seventh joint of the frame by a predetermined distance and having an eighth link with the seventh joint;
A seventh link having an upper end connected to the eighth joint;
An eighth link whose upper end is connected to the lower end of the seventh link by a ninth joint;
A ninth link having a lower end connected to the lower end of the eighth link by a tenth joint and an upper end connected to the seventh joint;
An eleventh joint disposed at an end of the beam member closer to the ninth link;
A tenth link having one end connected to the eleventh joint;
A twelfth joint disposed on the upper end side of the ninth link and connected to the other end of the tenth link;
A third leg extending from the ninth link to the tenth joint and having a wheel at the lower end;
A fourth leg extending from the eighth link to the tenth joint by a predetermined angle and having a wheel at the lower end;
An elevating type reclining seat chair provided with a moving mechanism that is provided in the frame and moves up and down the seat by moving the beam member in the front-rear direction,
A backrest that can be raised and lowered by a raising and lowering mechanism provided on the frame;
A headrest provided at the upper end of the backrest;
An elevating type reclining seating chair provided on the upper end of the backrest, comprising operating means for elevating the frame and raising / lowering the backrest by a user's mouth. The raising and lowering mechanism is
A first bearing base provided at the center of the rear upper end of the frame, and a plurality of second bases connected to the lower end of the backrest provided at a predetermined distance on the left and right sides of the upper rear end of the frame. A bearing pedestal, a third bearing pedestal provided at the center of the upper end of the back side of the backrest, and both ends connected to the first bearing pedestal and the third bearing pedestal, thereby expanding and contracting. A telescopic mechanism for raising and lowering the backrest,
The operation means includes
At least one arm having one end provided in the vicinity of the headrest at the upper end of the backrest and extending to the vicinity of the user's mouth;
The lifting / lowering according to claim 1 or 2, further comprising: a joystick provided at the other end of the arm for performing the lifting / lowering operation of the frame and the raising / lowering operation of the backrest by the user's mouth. Reclining seat chair. A pair of arms having one end provided at the upper end of the backrest and extending to the vicinity of the mouth of the user;
A short-axis operation type joystick that is provided at the other end of the one arm and is used to raise and lower the frame by the user's mouth;
4. A joystick of another short axis operation type, which is provided at the other end of the other arm and is used to perform the raising / lowering operation of the backrest by the mouth of the user. The elevating reclining seat chair according to any one of the above. One arm with one end provided at the upper end of the backrest and extending to the vicinity of the user's mouth;
2. A two-axis operation type joystick provided at the other end of the arm and used for raising and lowering the frame and raising and lowering the backrest with the mouth of the user. The elevating reclining seat chair according to any one of items 1 to 3.   6. The liftable reclining seat chair according to claim 4, wherein the arm is made of a flexible material.   The lift-type reclining seat chair according to claim 5 or 6, wherein one end of the arm is provided at an upper end of the backrest so as to be freely rotatable via a bearing.

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