JP2008125753A - Elevating legless chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevating legless chair which prevents the occurrence of inconvenience during lowering of a seat. <P>SOLUTION: By providing a sensing means for detecting contact with an article during lowering of the seat, on the lower side of the seat, the lowering stopping and elevation of the seat can be performed when contact with the article during lowering is detected, and as a result, the elevating legless chair which prevents the occurrence of the inconvenience during lowering of the seat, is provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevating seat chair that makes it easy for an elderly person, a frail person, or a person with a disability to stand up easily.

FIG. 23 is a conceptual diagram of a lift 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. It is rotatably connected to the tip of the piston rod 13a of the cylinder 13 that is movably mounted, and the swinging 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, 8, 9 are wheels, 14 is a support plate, 15 is a shaft, and 16 is a connecting pin.
Japanese Patent No. 3741690

  However, in the above-described prior art, when a pet such as a dog or cat is hidden under the seat mounting table 2 or a personal belonging to the baggage is placed, the seat mounting table 2 is brought into contact. Cause trouble.

  Accordingly, an object of the present invention is to provide an elevating seat chair that prevents the occurrence of inconvenience during the lowering of the seat.

  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 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, on the lower side of the seat seat, Characterized in that a detection means for detecting a contact with the object during the descent of the serial seat sheet.

  According to the first aspect of the present invention, detection means for detecting contact with an object while the seat seat is being lowered is provided on the lower side of the seat seat, thereby detecting contact with the object while the seat seat is being lowered. Therefore, it is possible to stop and raise the seat seat, and as a result, it is possible to provide an elevating seat chair that prevents inconvenience during the seat seat descend.

  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 seat chair provided with a moving mechanism for elevating the seat seat by moving the beam member in the front-rear direction, and the seat seat is being lowered on the lower side of the seat seat Detecting contact with objects in It is characterized by providing a detecting means to know.

  According to the second aspect of the present invention, detection means for detecting contact with an object while the seat seat is being lowered is provided on the lower side of the seat seat, thereby detecting contact with the object while the seat seat is being lowered. Therefore, it is possible to stop and raise the seat seat, and as a result, it is possible to provide an elevating seat chair that prevents inconvenience during the seat seat descend.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the detection means includes a plate-like member fixed to the lower side of the seat seat and another plate having a shape substantially equal to the plate-like member. Provided between the plate-like member and the other plate-like member, an elastic member for suspending the other plate-like member so as to be parallel to the plate-like member, and the plate-like member. And confirming means for confirming the presence or absence of positional displacement caused by the contact of the other plate member with the object.

  According to the third aspect of the present invention, there is provided confirmation means provided between the plate-like member and the other plate-like member for confirming the presence / absence of positional displacement caused by the contact of the other plate-like member with the object. Therefore, contact with an object is detected when the object comes in contact with a part of the seat while the seat is being lowered. Can be realized.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, a protective member is provided in the vicinity of the confirmation means for preventing the other plate-like member from being destroyed due to being too close. And

  According to the fourth aspect of the present invention, since the protective member for preventing the breakage due to excessive approach of the other plate-like member is provided in the vicinity of the confirmation means, it is possible to improve the reliability.

  The invention described in claim 5 is the invention described in claim 3 or 4, characterized in that the confirmation means is a micro switch or a photo interrupter.

  According to the fifth aspect of the present invention, since the confirmation means is a micro switch or a photo interrupter, it can be configured at low cost.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the other plate-like member is provided with a fall prevention means for preventing the drop from the plate-like member. It is characterized by.

  According to the sixth aspect of the invention, the other plate-like member is provided with the fall prevention means for preventing the drop from the plate-like member, so that the reliability can be improved.

  According to the present invention, the detecting means for detecting the contact with the object while the seat seat is lowered is provided on the lower side of the seat seat, so that the seat is detected when the contact with the object is detected while the seat seat is lowered. The seat can be lowered and stopped, and as a result, it is possible to provide an elevating seat chair that prevents the occurrence of inconvenience during the lowering of the seat.

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 (a) is a right view which shows one Embodiment after raising when the leg cover of the raising / lowering seat chair which concerns on this invention is removed, FIG.1 (b) is FIG.1 (a). It is an enlarged view of the remote control used for the elevating seat chair shown in FIG. 2 (a) is an enlarged side view of the vicinity of the detection means used in the liftable seat shown in FIG. 1 (a), and FIG. 2 (b) is a plan perspective view of FIG. 2 (a). 2 (c) is an enlarged side view of the vicinity of the fall prevention means among the detection means of FIG. 2 (a), and FIG. 2 (d) shows an object in contact with the detection means of FIG. 2 (a). 2 (e) is an enlarged side view of the vicinity of the confirmation means of the detection means of FIG. 2 (a), and FIG. It is a side surface enlarged view of the confirmation means vicinity when an object contacts the detection means of 2 (a).

  FIG. 3 is a relay sequence diagram in the initial state of the liftable seat shown in FIG. 1A (the seat is located at the bottom dead center and the power is OFF). 4 is an external perspective view of the elevating seat chair shown in FIG. FIG. 5 is a front view of the elevating seat chair shown in FIG. 6 is a right side view when the leg cover of the elevating seat chair shown in FIG. 1 is attached.

  1 and 4 to 7, the elevating seat chair 100 includes a seat sheet 101 supported on a metal (for example, aluminum) frame 122 having a substantially rectangular planar shape and an L-shaped side surface, and the seat sheet 101. Armrests 118 and 518 fixed on the arms 117 and 517 on both sides, a backrest 120 provided at the rear end (left side in FIG. 4) of the frame 122, and a headrest provided detachably at the upper end of the backrest 120 121.

  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 as to be rotatable 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 rotatable 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 the position of the top dead center shown in the drawing to the position of the bottom dead center described later by an elevator 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.

Reference numeral 250-1 denotes detection means for detecting contact with an object as a pet such as a dog or cat while the seat sheet 101 is being lowered.
2A and 2B, the detection means 250-1 includes a plate-like member (for example, resin, wood, or metal) 251 fixed to the lower frame 122 of the seat sheet 101, and a plate-like member. Another plate-like member (for example, resin, wood, or metal) 253 having a shape substantially equal to 251 (preferably slightly small so that it can be lifted upon contact with an object), and the other just below plate-like member 251 The plate-like member 253 is provided between an elastic member (for example, a spring, sponge, or rubber) 256 that suspends the plate-like member 253 so as to be parallel to the plate-like member 251, and the other plate-like member 253. It comprises a micro switch 252-1 as a confirmation means for confirming the presence / absence of positional displacement caused by contact of another plate-like member 253 with an object.

  The micro switch 252-1 is a double pole double throw type switch. In FIG. 2, a pin push button type micro switch is used, but the present invention is not limited to this, and the micro switch 252-1 may be a hinge lever type or a hinge roller type. .

  The other plate-like member 253 is provided with a ring 258-1 as a protective member so as to surround the microswitch 252-1. The thickness of the ring 258-1 is such that when the other plate-like member 253 approaches the plate-like member 251 by contact with an object, the contact of the microswitch 252-1 contacts the other plate-like member 253. In addition, the thickness is set so as to prevent destruction due to excessive contact. In addition, the outer shape of the ring 258-1 is circular in the figure, but may be any of an ellipse, a polygon, and a rectangle as long as it is a donut shape.

  The metal fitting 254 as the fall preventing means is a metal member having a substantially U-shaped cross section, and is fixed to the plate member 251 so as to sandwich the four corners of the plate member 251 and the other plate member 253. The metal fitting 254 is a member different from the plate member 251 in the drawing, but may be formed integrally with the plate member 0251. The metal fitting 254, the plate-like member 251, and the other plate-like member 253 are formed with through holes through which screws 257 for fixing to the frame 122 pass, but the other plate-like member 253 side of the through holes The inner diameter is set to a size that allows the object to contact the other plate-like member 253 and move upward.

The spring 256 has an upper end fixed to the plate member 251 and a lower end fixed to the other plate member 253. In this embodiment, the spring 256 is used. However, a cylindrical sponge or a cylindrical rubber may be used.
Reference numeral 259 denotes a spacer for adjusting the position so that the springs 609 and 610 (see FIGS. 8 and 9) and the detection unit 250-1 do not come into contact with each other.

The sequence diagram shown in FIG. 3 shows an initial state before power-on.
BS-ON is a power switch, U-PBS is an ascending switch (for example, a normally OFF push button), D-PBS is a descending switch (for example, a normally OFF push button), and PBS-OFF is a stop switch (a normally ON push button). Button) (see FIG. 1B).

U-MC and D-MC are coils of single-pole four-throw relays U-RL and D-RL.
U-MC-Ma1, U-MC-Ma2, U-MC-a are make contacts of the relay U-RL, and U-MC-b is a break contact of the relay-U-RL.
D-MC-Ma1, D-MC-Ma2, and D-MC-a are make contacts of the relay D-RL, and D-MC-b is a break contact of the relay D-RL.

A relay U-RL is composed of the coil U-MC, the make contact U-MC-Ma1, the U-MC-Ma2, the U-MC-a, and the break contact U-MC-b.
The coil D-MC, the make contact D-MC-Ma1, the DMC-Ma2, the D-MC-a, and the break contact D-MC-b constitute a relay D-RL.
Further, an interlock is formed by the coils U-MC, D-MC, break contacts U-MC-b, D-MC-b.
LS-Db is a normal ON type single pole single throw type limit switch. LS-Ua is a make contact of the limit switch LS-Db, and LS-Ub is a break contact of a double pole double throw type limit switch.
LS-Ua is a normal OFF type single pole single throw type limit switch. LS-Ub is a normal ON type single-pole single-throw limit switch, and is linked to the limit switch LS-Ua.

252-1a is a make contact of a double-pole double-throw microswitch 252-1 as a confirmation means, and 252-1b is a break contact of the microswitch 252-1.
The power source is a power source obtained by converting a battery or an AC power source into a predetermined voltage.
The movable contact sides of the make contacts U-MC-Ma1, U-MC-Ma2, D-MC-Ma1, and D-MC-Ma2 are connected to a motor 601 that drives a compressor 602 described later. The motor 601 is a direct current motor.

  The make contacts U-MC-Ma1 and U-MC-Ma2 and the make contacts D-MC-Ma1 and D-MC-Ma2 are wired so as to be marked. This is to reverse the rotation of the motor 601.

One of the power lines (the left side in FIG. 3) is connected to one end (upper end in FIG. 3) of limit switches LS-Ua, LS-Ub, and LS-Db via a stop switch PBS-OFF. The other end (in this case, the lower end) of the limit switch LS-Ua is connected to the other power supply line. The other end of the limit switch LS-Ub is connected to one end (the right end in FIG. 3) of the ascending switch U-PBS, the make contact U-MC-a, and the make contact 252-1a of the micro switch 252-1.
The other end (lower end in this case) of the ascent switch U-PBS and the other end (lower end in this case) of the make contact U-MC-a are connected to one end (upper end in FIG. 3) of the break contact D-MC-b. Yes. The other end (the left end in this case) of the make contact 252-1a and the other end of the break contact D-MC-b are connected to one end (upper end) of the coil U-MC, and the other end (lower end) of the coil U-MC. ) Is connected to the other power line.

  The other end (lower end) of the break contact LS-Db is connected to one end (upper end) of the make contact D-MC-a and one end (upper end) of the lowering switch D-PBS, and the other end of the make contact D-MC-a. (Lower end) and the other end (lower end) of the lowering switch D-PBS are connected to one end (upper end) of the break contact U-MC-b. The other end (lower end) of the break contact U-MC-b is connected to one end (upper end) of the coil D-MC, and the other end (lower end) of the coil D-MC is connected to the other power line via the break contact 252-1b. It is connected to the.

  The relays U-RL and D-RL of the sequence circuit, the switches BS-ON, U-PBS, D-PBS, and PBS-OFF are provided in the remote controller 130 (FIG. 1), for example.

Next, with reference to FIG. 1 (a), (b) and FIG. 7, the raising / lowering mechanism of a raising / lowering seat chair is demonstrated.
A first joint (shaft and bearing) 109 is provided at the rear end (the left end in FIG. 1A) 122B of one side surface (the surface shown in FIG. 1A) 122R of the frame 122 shown in FIG. It has been. A second position upward from the joint 109 on one side surface 122R of the frame 122 by a predetermined position (for example, a position forward of the angle θ1 “about 10 degrees” at a distance of about one-fifth of the longitudinal length of the frame 122). Joint 110 is provided. A first link 104 indicated by a broken line is formed between the joints 109 and 110.

One end (the upper end in FIG. 1A) of a rod 105 having a predetermined length as a second link (about 5/8 of the length in the front-rear direction of the frame 122) is connected to the joint 110. One end (upper end in FIG. 1A) of a plate-like member 107 having a predetermined length as a fourth link (about 5/8 of the length in the front-rear direction of the frame 122) is connected to the joint 109. Yes. The other end (the lower end in this case) of the rod 105 is one end of a plate-like member (for example, about one half of the length of the first link 104) 106a (in FIG. 1A). It is connected to the upper end by a third joint 103. 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 (the lower end in FIG. 1A). Is provided.
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 (the left-right direction in FIG. 1A) in the left-right direction (the direction perpendicular to the paper surface in FIG. 1A). 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. 1A) is connected by a 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 drawing, 119 is a shaft for rotating the arm 117.

7 is a left side view of the elevating seat chair shown in FIG. 4 after the leg cover is removed.
Each member of the liftable seat 100 shown in FIG. 7 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.

FIG. 8 is a diagram showing a state when the seat of the liftable seat shown in FIG. 4 is removed. FIG. 8 shows a state where the right armrest is raised. FIG. 9 is a partially enlarged view of the frame of the elevating seat chair shown in FIG. 8, 9, and 12, the detection means 250-1 is indicated by a wavy line.
8 and 9, two guide rods 605 and 606 are provided in the frame 122 in the vicinity of the side plates 122R and 122L of the frame 122 along the front-rear direction (left-right direction in FIG. 8) 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 drive shaft of the air compressor 602 is connected to an output shaft of the motor 601. The intake / exhaust port of the air compressor 602 is connected to the air cylinder 603. The tip end portion 607 a of the piston rod 607 of the air cylinder 603 is fixed to the beam member 124. The motor 601, the air compressor 602, and the air cylinder 603 constitute a moving mechanism (a feed screw and a nut may be used instead of the air compressor 602 and the air cylinder 603).

  A battery (not shown) (for example, a lithium ion battery, a nickel metal 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 DC voltage is applied to the motor 601 by operation of the remote controller 130. It has become so. 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 compressor 602 is switched by switching the rotation direction, and the piston rod 607 in the air cylinder 603 is taken in and out. The beam member 124 moves in the frame 122 in the front-rear direction (left-right direction in FIG. 9) by inserting and removing the piston rod 607. The air cylinder 603 is provided with limit switches LS-U and LS-D, which determine whether the position of the piston rod 607 is located at the front dead center or the rear dead center, and send information to the sequencer in the remote controller. The frame 122 can be stopped at the top dead center or the bottom dead center.

  One end of the rod 614 (the left end in FIGS. 8 and 9) is fixed to the approximate 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 located at the top dead center, the tip 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 to urge the beam member 124 toward the rear end 122B (left side in FIGS. 8 and 9). . 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 intended to reduce the burden on the motor 601 by assisting the energy required to raise the frame 122 for each user.

(Operation)
Next, the operation of the liftable seat 100 shown in FIG. 1A will be described with reference to the drawings.
FIG. 10 is a diagram showing a state after the elevating seat chair shown in FIG. 4 is lowered. FIG. 11 is a right side view when the leg cover of the liftable seat shown in FIG. 10 is removed. FIG. 12 is a partially enlarged view of the frame after the elevating seat chair shown in FIG. 8 is lowered.

  14 is an explanatory diagram of the ascending operation by the ascending switch U-PBS, FIG. 15 is an explanatory diagram of the stopping operation by the limit switch LS-U, and FIG. 16 is an explanation of the descending operation by the descending switch D-PBS. FIG. 17 is an explanatory diagram of a stop operation by the limit switch LS-D, and FIG. 18 is an explanatory diagram of an ascending operation by the detection means.

First, the case where the frame 122 of the liftable seat 100 is raised will be described.
When the power switch BS-ON of the remote controller 130 (FIG. 1B) is pressed and the ascent switch U-PBS is pressed, a current flows through the coil U-MC shown in FIG. 14, and the relay U-RL operates.
When the relay U-RL is operated, the main contacts U-MC-Ma1 and U-MC-Ma2 are closed (linked operation). When the main contacts U-MC-Ma1 and U-MC-Ma2 are closed, the motor 601 shown in FIG. 14 (FIG. 12) is operated (for example, forward rotation), and the self-holding a contact U-MC-a is closed. The U-MC-b which is the b contact opens and interlocks. Even if the finger is released from the switch U-PBS, it is held.

  When the motor 601 shown in FIG. 12 rotates forward, the compressor 602 operates to discharge the air in the air cylinder 603. When the air in the air cylinder 603 is discharged, the piston cylinder 607 moves so as to enter the air cylinder 603. As the piston cylinder 607 moves, 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. 12 by the springs 609 and 610, and is urged to the left side in FIG. 12 by the springs 611 to 613. For this reason, the motor 602 can push up the frame 122 for every user not shown in the figure sitting on the seat 101 with about half the output when there is no spring 609, 610, 611 to 613.

  When the beam member 124 moves to the left side in the elevating seat chair 100 shown in FIG. 11, 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 portion 125 rotates clockwise about 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 rotate in the clockwise direction, the rod 105 rotates the plate-like member 106a in the counterclockwise direction, so that the leg portion 114 also rotates in the counterclockwise direction.

  Further, the tip 614 a of the rod 614 that protrudes from the front end 122 </ b> F of the frame 122 is in contact with the skirt 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 burden on the motor 601 is reduced. Further, when a user (caregiver) not shown in the figure is sitting on the liftable chair 100, the user's calf rides on the skirt portion 116 so that the beam member 124 is attached to the frame 122. Since the force to push in increases, the burden on the motor 601 is further reduced.

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

  When the beam member 124 shown in FIG. 9 moves to the left and the frame 122 shown in FIG. 1A rises and the air cylinder 603 reaches the rear dead center, the limit switch LS-U detects. When the limit switch LS-U detects, the LS-Ua that is the contact a in FIG. 15 is closed and the LS-Ub that is the contact b is opened (interlocked operation).

When the contact LS-Ub is opened, no current flows through the coil U-MC, and the coil U-MC returns.
When the coil U-MC returns, the main contacts U-MC-Ma1 and U-MC-Ma2 open (interlocking operation).
When the main contacts U-MC-Ma1 and U-MC-Ma2 are opened, no current flows through the motor 601, the motor 601 stops, and the frame 122 (FIG. 1A) stops at the top dead center.
When the coil U-MC returns, the self-holding a contact U-MC-a is opened, the b contact U-MC-b is closed, and the interlock is released.
Since the operation of the liftable seat 100 shown in FIG. 7 is the same, the description thereof is omitted.

Next, the case where the frame 122 of the liftable seat 100 is lowered will be described.
When the lowering switch D-PBS shown in FIG. 1B is pressed with a finger, a current flows through the coil D-MC shown in FIG. 16, and the coil D-MC operates (is magnetized). When the coil D-MC operates, the main contacts D-MC-Ma1 and D-MC-Ma2 are closed. When the main contacts D-MC-Ma1 and D-MC-Ma2 are closed, a current flows through the motor 601 (FIG. 9) and the motor 601 operates (in this case, reverse rotation). When the coil D-MC operates, the self-holding a contact D-MC-a closes and self-holds, and the b-contact D-MC-b opens and interlocks.

When the motor 601 shown in FIG. 9 operates, the compressor 602 operates to supply air into the air cylinder 603. When air is supplied into the air cylinder 603, the piston cylinder 607 starts to move out of the air cylinder 603. When the movement (extension) to the right side of the piston cylinder 607 is started, the beam member 124 starts to move to the right side of FIG.
When the piston cylinder 607 starts to extend so that the beam member 124 starts to move to the right, the limit switch LS-U is restored, the a contact LS-Ua is opened, and the b contact LS-Ub is closed.

When the beam member 124 moves to the right side in the liftable seat 100 shown in FIG. 1A, 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. Accordingly, the leg portion 125 rotates 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, the plate-like member 107 tries to rotate counterclockwise. Since the rod 105 rotates the plate member 106 in the clockwise direction, the leg portion 114 also rotates in the clockwise direction.

  Further, the tip 614a of the rod 614 is gradually exposed 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 push the rod 614 into the frame 122. Further, when the frame 122 is lowered, a force for urging the beam member 124 toward the rear end 122B of the frame 122 is applied by the springs 609 and 610. When the frame 122 approaches the bottom dead center, the beam member 124 is applied by the springs 611 to 613. Is applied to the rear end 122B side of the frame 122.

  These forces are in the same direction as the force that moves the beam member 124 to the rear end 122B of the frame 122. However, when the frame 122 descends, it follows the direction of gravity, and the springs 609, 610, 611 to 613 and the rod 614 Since the force is overcome, the motor 601 is hardly affected.

  As shown in FIG. 11, the frame 122 is stably lowered without wobbling by the counterclockwise rotation of the four-bar rotation mechanism and the accompanying leg movement of the legs 114 and 125.

  As shown in FIG. 12, when the piston rod 607 expands and contracts so that the beam 124 moves to the right end and reaches the front dead center, the limit switch LS-D detects and the b contact LS-Db in FIG. 17 opens. When the b contact LS-Db is opened, no current flows through the coil D-MC, and the coil D-MC returns. When the coil D-MC returns, the main contacts D-MC-Ma1 and D-MC-Ma2 open. When the main contacts D-MC-Ma1 and D-MC-Ma2 are opened, no current flows through the motor 601, the motor 601 stops, and the frame 122 (FIG. 12) stops at the bottom dead center. When the coil D-MC returns, the self-holding a contact D-MC-a is opened, the self-holding is released, the b-contact D-MC-b is closed, and the interlock is released.

Now, for example, a case where the user inadvertently presses the lowering switch D-PBS when the pet cat 300 has entered under the frame 122 as shown in FIG. 19 will be described with reference to FIGS.
FIG. 19 is a view showing a state in which the pet is lowered when it is under the elevating seat chair shown in FIG.
When the lowering switch D-PBS shown in FIG. 1B is pressed with a finger, a current flows through the coil D-MC shown in FIG. 18, and the coil D-MC operates (is magnetized). When the coil D-MC operates, the main contacts D-MC-Ma1 and D-MC-Ma2 are closed. When the main contacts D-MC-Ma1 and D-MC-Ma2 are closed, a current flows through the motor 601 and the motor 601 operates (reverse rotation in this case). When the coil D-MC operates, the self-holding a contact D-MC-a closes and self-holds, and the b-contact D-MC-b opens and interlocks.
When the motor 601 operates, the compressor 602 operates to supply air into the air cylinder 603. When air is supplied into the air cylinder 603, the piston cylinder 607 moves so as to exit the air cylinder 603. As the piston cylinder 607 moves (extends), the beam member 124 moves to the right in FIG.

When the piston cylinder 607 is extended, the limit switch LS-U is restored, the a contact LS-Ua is opened, and the b contact LS-Ub is closed.
As the beam member 124 shown in FIG. 9 moves to the right side, the frame 122 descends, and the lower surface of the other plate-like member 253 (FIG. 2A) of the detection means 250-1 contacts the cat 300. When the lower surface of the other plate-shaped member 253 contacts the cat 300, the other plate-shaped member 253 is displaced upward (FIGS. 2B and 2F), and the upper surface of the other plate-shaped member 253 is the micro switch 252. Press the -1 contact. When the contact of the micro switch 252-1 is pushed, the a contact 252-1a is closed and the b contact 252-1b is opened. When the a contact 252-1a is closed and the b contact 252-1b is opened, the current stops flowing through the coil D-MC, and the current returns to the coil U-MC.
When the current returns to the coil D-MC, the main contacts D-MC-Ma1 and D-MC-Ma2 open, the a contact D-MC-a opens, and the b contact D-MC-b closes.

When a current flows through the coil U-MC, the main contacts D-MC-Ma1 and D-MC-Ma2 are closed and a current flows through the motor 601 to reverse the reverse rotation to the normal rotation, and the a contact U-MC-a Close and b contact U-MC-b opens.
As a result, the frame 122 starts to rise. While the cat 300 is in contact with the other plate-like member 253 while the frame 122 is rising, the frame 122 continues to rise, but when the cat 300 escapes from directly below the frame 122, the other plate-like member 253 The upper surface is separated from the microswitch 252-1.

When the upper surface of the other plate-like member 253 is separated from the microswitch 252-1, the a contact 252-1a is opened and the b contact 252-1b is closed. When the a-contact 252-1a is opened and the b-contact 252-1b is closed, the coil U-MC returns with no current flowing, and the coil D-MC operates with current flowing. Once again, the frame 122 continues to descend again.
Since the operation of the liftable seat 100 shown in FIG. 7 is the same, the description thereof is omitted.

  By the way, when the frame 122 of the elevating seat 100 is lowered to the bottom dead center, the front and rear wheels 113 and 115 are positioned approximately at the front and rear of the frame 122, and the backrest 120 is folded as shown in FIG. It becomes compact. FIG. 13 is a view showing a state in which the backrest of the elevating seat chair shown in FIG. 10 is folded.

  Since the wheels 113, 115, 513, and 515 do not jump forward and backward when the frame 122, that is, the seat sheet 101 is located at the bottom dead center, the lifting and lowering seat 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. For example, in the above-described embodiment, the case where a micro switch is used as the confirmation unit has been described. However, the present invention is not limited to this, and a photo interrupter may be used as shown in FIGS. good.

  In the case of using a photo interrupter, for the sequence, a gate such as an AND gate, an OR gate, a NOT gate, a NAND gate, a NOR gate, an EXOR gate, a transistor, a resistor, a diode instead of the relay and the switch in the relay sequence shown in FIG. A non-contact sequence may be performed using.

Moreover, although the number of confirmation means was demonstrated in the embodiment mentioned above, this invention is not limited to this, FIG. 20 (a)-(f), FIG. 21 (a)-(d), FIG. There may be a plurality as shown in 22 (a) to (d).
When there are a plurality of confirmation means, each confirmation means needs to be connected in parallel. For example, when the confirmation means is a micro switch, each a contact and each b contact are connected in parallel. When the confirmation means is a photo interrupter, outputs of four photo interrupters need to be connected to inputs of a four input OR gate.

20 (a) is an enlarged side view of the vicinity of the detection means used in the liftable seat shown in FIG. 1 (a), and FIG. 20 (b) is a plan perspective view of FIG. 20 (a). FIG. 20 (c) is an enlarged side view of the vicinity of the fall prevention means in the detection means of FIG. 20 (a).
20A to 20F, 258-2 is a protective member similar to the ring 258-1 (FIG. 2).

  FIG. 21A is an enlarged side view in the vicinity of the detection means used in the elevating seat shown in FIG. 1A, and FIG. 21B is a plan perspective view of FIG. FIG. 21 (c) is an enlarged side view in the vicinity of the fall prevention means among the detection means in FIG. 21 (a), and FIG. 21 (d) shows an object in contact with the detection means in FIG. 21 (a). It is a side surface enlarged view of the fall prevention means vicinity when doing.

  21A to 21D, reference numeral 258-3 denotes a protective member, and when the other plate-like member 253 approaches the plate-like member 251 due to contact with an object, the photo interrupter 252-3 is the other member. The thickness is set so as to contact the plate-like member 253 and prevent destruction due to excessive contact. The planar shape of the protective member 258-3 is circular in the drawing, but is not limited, and may be any of an ellipse, a polygon, a rectangle, and a ring.

22 (a) is an enlarged side view of the vicinity of the detection means used in the liftable seat shown in FIG. 1 (a), and FIG. 22 (b) is a plan perspective view of FIG. 22 (a). FIG. 22 (c) is an enlarged side view of the vicinity of the fall prevention means in the detection means of FIG. 22 (a).
22A to 22D, reference numeral 252-4 denotes a microswitch similar to the microswitch 252-1 shown in FIG.

  For example, in the above description, the case where there is one rod 601 has been described. However, the present invention is not limited to this, and the number of rods 601 may be two or more.

  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.

(A) is a right view which shows one Embodiment after raising when the leg cover of the raising / lowering seat chair which concerns on this invention is removed, (b) is the raising / lowering type shown to (a). It is an enlarged view of the remote control used for a seat chair. (A) is an enlarged side view of the detection means vicinity used for the raising / lowering seat shown in FIG. 1 (a), (b) is a plane perspective view of (a), (c) is , (A) is an enlarged side view in the vicinity of the fall prevention means, (d) is an enlarged side view in the vicinity of the fall prevention means when an object contacts the detection means in (a), (E) is an enlarged side view of the vicinity of the confirmation means in the detection means of (a), and (f) is an enlarged side view of the vicinity of the confirmation means when an object contacts the detection means of (a). is there. It is a relay sequence figure in the initial state of the raising / lowering seat chair shown to Fig.1 (a). It is an external appearance perspective view of the raising / lowering seat chair shown in FIG. It is a front view of the elevating seat chair shown in FIG. It is a right view when the leg cover of the elevating seat chair shown in FIG. 1 is removed. It is a left view after the leg cover removal of the elevating seat chair shown in FIG. It is a figure which shows a state when the seat sheet of the raising / lowering seat shown in FIG. 4 is removed. 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 seat shown in FIG. It is a right view when the leg cover of the elevating seat chair shown in FIG. 10 is removed. It is the elements on larger scale of the flame | frame after the fall of the raising / lowering seat chair shown in FIG. It is a figure which shows the state which folded the backrest of the raising / lowering type seat chair shown in FIG. It is explanatory drawing of the raise operation | movement by the raise switch U-PBS. It is explanatory drawing of the stop operation | movement by the limit switch LS-U. It is explanatory drawing of the downward movement by downward switch D-PBS. It is explanatory drawing of the stop operation | movement by the limit switch LS-D. It is explanatory drawing of the raise operation | movement by a detection means. It is a figure which shows the state made to descend | fall when the pet was under the elevating seat chair shown to Fig.1 (a). (A) is an enlarged side view of the detection means vicinity used for the raising / lowering seat shown in FIG. 1 (a), (b) is a plane perspective view of (a), (c) is , (A) is an enlarged side view in the vicinity of the fall prevention means, (d) is an enlarged side view in the vicinity of the fall prevention means when an object contacts the detection means in (a), (E) is an enlarged side view of the vicinity of the confirmation means in the detection means of (a), and (f) is an enlarged side view of the vicinity of the confirmation means when an object contacts the detection means of (a). is there. (A) is an enlarged side view of the detection means vicinity used for the raising / lowering seat shown in FIG. 1 (a), (b) is a plane perspective view of (a), (c) is (A) is an enlarged side view of the vicinity of the fall prevention means, and (d) is an enlarged side view of the vicinity of the fall prevention means when an object comes into contact with the detection means of (a). (A) is an enlarged side view of the detection means vicinity used for the raising / lowering seat shown in FIG. 1 (a), (b) is a plane perspective view of (a), (c) is (A) is an enlarged side view of the vicinity of the fall prevention means, and (d) is an enlarged side view of the vicinity of the fall prevention means when an object comes into contact with the detection means of (a). 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 Remote control 203, 204 Reinforcement plate 250-1 Detection means 301 Butterfly

Claims (6)

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 seat chair adapted to raise and lower the seat seat,
An elevating seat chair comprising a detecting means for detecting contact with an object while the seat seat is being lowered on the lower side of the seat seat. 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 seat chair provided with a moving mechanism provided in the frame and moving the seat member up and down by moving the beam member in the front-rear direction;
An elevating seat chair comprising a detecting means for detecting contact with an object while the seat seat is being lowered on the lower side of the seat seat. The detection means includes a plate-like member fixed to the lower side of the seat sheet;
Another plate-like member having a shape substantially equal to the plate-like member,
An elastic member suspended below the plate member so that the other plate member is parallel to the plate member;
And a confirmation unit which is provided between the plate-like member and the other plate-like member and confirms whether or not the other plate-like member is displaced due to contact with the object. Item 3. The elevating seat chair according to item 1 or 2.   The elevating seat chair according to claim 3, wherein a protective member is provided in the vicinity of the confirmation means for preventing the other plate-like member from being destroyed by being too close.   The elevating seat chair according to claim 3 or 4, wherein the confirmation means is a micro switch or a photo interrupter.   The elevating seat chair according to any one of claims 1 to 5, wherein the other plate-like member is provided with a fall prevention means for preventing the fall from the plate-like member.

Images