JP2000197668A - Motor-driven freely movable chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems that an armrest becomes an obstacle when a user horizontally moves in a toilet or the like by disposing a seat on a truck where a motor and a battery, etc., are loaded, arranging the armrests on both sides of the seat and making the armrests settable at a position equal to or below the seat surface of the seat. SOLUTION: This motor-driven freely movable chair is provided with the truck 1 composed by arranging wheels 11 composed of ball wheels and a motor for driving the respective wheels 11 at the four corners of a base 10, the seat 2 is disposed on the truck 1 and the armrests 4 are arranged on both sides of the seat 2. The seat 2 is composed by integrally forming a seat part 20 and a backrest part 21 and is disposed on a housing 12. The left and right armrests 4 are arranged at the upper ends of columns 15 respectively arranged on both sides of the truck 1 and the respective columns 15 are freely vertically slidably held by guide bodies 17 arranged on the left and right of the truck 1. That is, the armrests 4 are height adjustably formed and the lower limit of the height adjustment range of the armrests 4 is set equal to or below the seat surface height of the seat 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric movable chair in which a seat is arranged on a carriage on which a motor, a battery and the like are mounted, and armrests are arranged on both sides of the seat.

[0002]

2. Description of the Related Art Electric movable chairs include motors, storage batteries,
The seat is arranged on a trolley equipped with a control circuit etc., and armrests are arranged on both sides of the seat,
Conventional armrests have been fixed to seats.

[0003]

For this reason, when approaching a desk or the like, the armrests may disturb the user from reaching the desired position, and the user may transfer from the seat to a bed or toilet. When you do, the armrests get in the way.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric movable chair that eliminates the problem caused by the presence of an armrest.

[0005]

According to the present invention, there is provided a truck having a motor, a battery, and the like mounted thereon, a seat disposed on the truck, and armrests arranged on both sides of the seat. It is characterized in that it can be set at a position below the seat surface. The armrest can be set at a position where it does not get in the way.

In this case, it is preferable that the height of the armrest is freely adjustable, and that the lowermost position of the height adjustment range is a position below the seat surface of the seat.

The height may be adjusted steplessly or stepwise in height, but only in the upper part of the height adjustment range, positioning in the height direction is free. It is good to keep it. This is because height adjustment near the seat surface is practically unnecessary.

As the positioning means in the height direction when adjusting the height of the armrest, a lock pin or a ratchet pin which meshes with a rack and pinion and a pinion can be suitably used. In this case, the pinion is positioned in the longitudinal direction of the rack. It is good to provide a plurality.

The positioning means in the height direction for adjusting the height of the armrests may use a pair of racks which mesh with each other and which are unlocked by separating from each other.

It is also preferable to provide a stopper for retaining the armrest. At this time, it is more preferable that the stopper by the stopper is releasable or that the stopper is retained by engagement by spring elasticity. preferable.

In the case where the height of the armrest can be adjusted, the operation part for height adjustment is preferably provided on the armrest.

Further, the motor arranged on the bogie is locked in a stopped state when the armrest is at a predetermined height position, locked in a stopped state when adjusting the height of the armrest, or locked in a stopped state when removing the armrest. It is preferable from the viewpoint of safety.

Further, the present invention comprises a truck on which a motor, a battery, etc. are mounted, a seat disposed on the truck, and a height-adjustable armrest disposed on both sides of the seat. The operation unit is characterized in that it is disposed substantially at the same position as the upper surface of the armrest at the front position of the armrest. When operating the operation unit with the arm resting on the armrest, no burden is imposed on the wrist.

The operating section is preferably provided on an armrest because the height of the armrest is freely adjustable.
Further, it is preferable that the left and right armrests can be interchanged with each other, or that the operation unit can be freely attached to the left and right armrests.

Further, the present invention comprises a truck equipped with a motor, a battery and the like, a seat disposed on the truck, and a height-adjustable armrest disposed on both sides of the seat. The part is characterized in that it is attached to one side of the armrest so as to be stowable. The operation unit does not become an obstacle during transfer.

In this case, it is preferable that the operation section is freely retractable below the armrest, and it is also preferable that the operation section is automatically retracted according to the height position of the armrest.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to an example of an embodiment.
As shown in FIG. 3, the trolley 1 comprises a trolley 1, a seat 2 disposed on the trolley 1, and armrests 4 disposed on both sides of the seat 2. And a motor for driving each wheel 11, and a storage battery, a control circuit, and the like are housed in a housing 12 arranged on the base 10. Also,
A footrest 6 is arranged in front of the cart 1.

The seat 2 in which the seat 20 and the backrest 21 are integrally formed is disposed on the housing 12.

The left and right armrests 4, 4 are disposed at the upper ends of the posts 15, 15 disposed on both sides of the trolley 1, and the posts 15 are vertically moved by guides 17 disposed on the left and right sides of the trolley 1. It is slidably held and can be fixed at any position.
The height of the can be adjusted. A joystick-type operation unit 5 for traveling control is provided at the front end of the armrest 4 on one side.

In this motorized movable chair, as shown in FIG. 4, when the armrest 4 hits the desk 80 or the like when the user wants to approach the desk, the height of the armrest 4 is reduced so that the armrest is located below the desk 80. 4 can enter. In addition, since the lower limit of the height adjustment range of the armrest 4 is set to be equal to or less than the seat height of the seat 2 as shown in FIG.
As shown in FIG. 5, the armrest 4 does not interfere with the transfer to the bed 81 or the like.

Here, the height of the armrest 4 is adjusted by performing an unlocking operation of the up and down slide of the column 15 and
Is moved up and down, but if the lock release operation unit 40 is located on the bogie 1 side as shown in FIG.
Since the height adjustment operation becomes difficult, it is preferable to provide the armrest 4 itself with the unlocking operation section 40 as shown in FIG. In the illustrated example, the unlocking operation unit 40 is arranged on the lower surface side of the armrest 4, and the armrest 4 can be moved up and down while unlocking by operating the unlocking operation unit 40 with a hand gripping the armrest 4. Like that. In the figure, 41 is a lock pin, 42 is a lock pin 41 is the guide 1
A spring biasing in a direction to fit into the height adjusting hole 16 of 7
Reference numeral 3 denotes a wire connecting the lock release operation unit 40 and the lock pin 41.

The vertical length of the guide body 17 which is used for vertically guiding the column 15 of the armrest 4 and has a plurality of height adjustment holes 16 for height adjustment is determined by the vertical movement range of the armrest 4. The height of the armrest 4 is practically adjustable only at the upper part of the vertical movement range of the armrest 4, that is, only between the position shown in FIG. 8 and the position shown in FIG. Is further lowered so as to be equal to or less than the seating surface height of the seat 2, as shown in FIG.
7 is located below. That is, the armrest 4 only stops in the state shown in FIG. 10 below the position shown in FIG. Even if the height of the armrest 4 can be finely adjusted in the vicinity of the seating surface of the seat 2, there is no practical use, and the armrest 4 stops at a position slightly higher than the seating surface of the seat 2. This is because the armrest 4 becomes an obstacle when transferring to a bed or the like.

The mechanism for adjusting the height of the armrest 4 is not limited to the above. In the example shown in FIG. 11, the roller 5 that rolls on a roller guide 51 provided on the guide body 17
0 is provided on the support 15, and a lock piece 52 is provided on the support 15 to stop the rotation of the roller 50 while being in contact with the roller 50 by the bias of the spring 53. The armrest 4 can be moved up and down by pulling up the lock piece 52 by operating the operation part 40 connected to the lock piece 52, and the lock by the lock piece 52 is made when the hand is released from the operation part 40. In this case, the height can be adjusted steplessly.

As shown in FIG. 12, a rack 54 is provided on the guide body 17, a pinion 55 meshing with the rack 54 is provided on the support column 15, and a lock pin 56 meshing with the pinion 55 to stop the rotation of the pinion 55 is provided on the operating section. 40. Lock pin 5 by operating the operation unit 40
By raising the armrest 6, the armrest 4 can be moved up and down, and when the lock pin 56 is engaged with the pinion 55, the armrest 4 is fixed at that position. Fine multi-step height adjustment determined by the tooth pitch of the pinion 55 can be performed.

When the number of the pinions 55 is one, the height adjustment range is determined by the length of the rack 54.
When a plurality of pinions 55 meshing with the rack 54 are arranged in the longitudinal direction of the rack 54 as shown in FIG. 7, a height adjustment range longer than the length of the rack 54 can be obtained. 5 in the figure
Reference numeral 7 denotes an idle pinion for synchronizing the two pinions 55, 55, and is provided so that the two pinions 55, 55 can be locked by one lock pin 56.

In the apparatus using the rack 54 and the pinion 55, a ratchet pin 58 rotatable about a shaft 59 is used instead of the lock pin 56 as shown in FIG.
May be provided on the support 15, and the ratchet pin 58 may be engaged with the pinion 55. Pinion 55
In the figure, the counterclockwise rotation, that is, the movement in the direction of lowering the armrest 4 is prevented by the ratchet pin 58, but the rotation of the pinion 55 in the clockwise direction in the figure caused by the movement in the direction of raising the armrest 4 is performed by the pinion 55. Since the ratchet pin 58 is free to rotate, the operation unit 40 needs to be operated only when the armrest 4 is lowered.

As shown in FIG. 15, a rack 54 fixed to the guide body 17 and a support 15
The height of the armrest 4 may be locked by engaging with the rack 60 attached to the armrest 4. The vertical movement of the armrest 4 for adjusting the height is performed by operating the operation unit 40 connected to the rack 60 to move the rack 60 to the rack 5.
4 in a state where it is separated. In this case, the rack 54,
Since the engagement length and area of the armrest 60 are increased, even if the load on the armrest 4 is large, it can be reliably supported, and the safety is enhanced.

In the case where the support 15 of the armrest 4 is supported by the guide body 17 so as to be freely slidable up and down, it is preferable that the armrest 4 is not accidentally dropped. FIG. 16 shows a state in which a stopper 63 is provided on the guide body 17 for this purpose, and the stopper 63 comes in contact with the projection 64 of the support column 15 to prevent the stopper from coming off.

However, since it is preferable that the armrest 4 can be detached as described later, a screw screwed into the guide body 17 may be used as the stopper 63 as shown in FIG. As shown in FIG. 7, a stopper 63 projecting inward by a spring 65 may be used.

As shown in FIG. 19, the stopper 63 is formed by an elastic piece 66 cut and raised in a part of the guide body 17,
When a predetermined force is applied, the armrest 4 may be detachable so that the protrusion 64 gets over the stopper 63. When lifting for transportation, it is possible to keep the armrest 4 from slipping out by lifting it with the armrest 4, and there is a danger of carrying heavy objects with the armrest 4 held. Can be notified.

When the armrest 4 is lowered and transferred to a bed or the like as described above, it is dangerous if the operation unit 5 disposed at the front end of the armrest 4 is inadvertently moved and the carriage 1 runs. . For this purpose, as shown in FIG. 20, it is desirable to configure a drive control circuit so that the running motor is locked in a stopped state when the armrest 4 becomes lower than a predetermined height. Even if clothes are caught on the operation unit 5 during transfer,
It is safe without running.

It is dangerous even if something touches the operation unit 5 during the adjustment of the height of the armrest 4 and the vehicle is in a running state. Therefore, as shown in FIG. During the height adjustment operation, a member for detecting that the motor is being stopped is provided, or the motor is locked in a stopped state, or as shown in FIG. 22, the lock release operation unit 40 for height adjustment is operated. It is desirable that the motor be locked in the stopped state during the operation.

In the case where the armrest 4 can be removed as described above, it is preferable to lock the motor in a stopped state by removing the armrest 4 as shown in FIG.

Further, as shown in FIG. 24, the operation section 5 may be stored in the storage position. The operation unit 5 is not inadvertently moved. It should be noted that the storage of the operation unit 5 is rotated downward so that the operation unit 5 is accommodated in a position below the armrest 4, and as shown in FIG.
As shown in FIG.
As shown in FIG. 6, it may be arranged so that it is rotated and stored in the horizontal direction. The operation unit 5 is not accidentally moved. It is also preferable that the armrest 4 is automatically stored when the armrest 4 becomes lower than a predetermined height by adjusting the height of the armrest 4. In addition to the automatic storage, the lock is released when the armrest 4 becomes lower than a predetermined height in a case where the automatic storage is performed below the armrest 4 by rotation as shown in FIG. It can be rotated to the storage position by its own weight.

The operation unit 5 is attached to the armrest 4 so as to be substantially at the same height as the upper surface of the armrest 4, as is apparent from FIG. Operation part 5 is armrest 4
Above the upper surface of the armrest, as shown in FIG.
When the operation unit 5 is operated with the arm placed on the wrist, the wrist is bent greatly, or only the elbow is placed on the armrest 4, so that the burden on the wrist increases and the arm becomes easily tired. Conversely, if the operation section 5 is located at a position lower than the upper surface of the armrest 4, as shown in FIG. 29, the elbow or arm must be separated from the armrest or the wrist must be greatly bent. But,
If the upper surface of the armrest 4 and the operation unit 5 are substantially flush with each other, the operation unit 5 is operated without placing a burden on the wrist with the entire arm resting on the armrest 4 as shown in FIG. be able to.

The operation unit 5 is not provided on the armrest 4 but in FIG.
As shown in FIG. 0, when mounted on the trolley 1 or the seat 2, when adjusting the height of the armrest 4, a step is generated between the upper surface of the armrest 4 and the operation unit 5, so that the step is eliminated. Must be attached so that the height of the operation unit 5 can be adjusted separately. However, if the operation unit 5 is attached to the armrest 4, the operation unit 5 moves up and down at the same time when the height of the armrest 4 is adjusted. In addition, the operation unit 5 is always located at a position where it is easy to operate.

Further, the operating section 5 is provided on one of the pair of armrests 4, 4 provided on the left and right, but the left and right armrests 4, 4 can be interchanged as shown in FIG. If the operation unit 5 is attached to either of the left and right armrests 4 as shown in FIG. 32, the operation unit 5 is arranged on the dominant arm side or the arm side without obstacle. be able to.

[0038]

As described above, according to the present invention, the armrests arranged on both sides of the seat can be set at positions below the seating surface of the seat. It never happens.

In this case, it is preferable that the height of the armrest is freely adjustable, and that the lowermost position of the height adjustment range is a position below the seat surface of the seat. It is possible to prevent the armrest from hitting the desk etc., so that the armrest does not get in the way to the desired position because it is in the way, and the height of the armrest can be set to the height according to personal preference it can.

The height may be adjusted steplessly or stepwise, but only in the upper part of the height adjustment range, the position in the height direction can be freely adjusted. It is good to keep it. This is because height adjustment near the seat surface is practically unnecessary.

As the positioning means in the height direction when adjusting the height of the armrest, a rack-and-pinion and a lock pin meshing with the pinion can be used. If a ratchet pin is used instead of the lock pin, the time required for unlocking can be reduced by half. In this case, if a plurality of pinions are provided in the longitudinal direction of the rack, an adjustment range longer than the length of the rack can be obtained.

As the positioning means in the height direction when adjusting the height of the armrests, a pair of racks which mesh with each other and which are unlocked by separating from each other may be used. Safety can be improved because a large load can be supported.

It is also preferable to provide a stopper for preventing the armrest from falling off, since it is possible to prevent the armrest from falling off. At this time, the stopper by the stopper can be released freely, or the stopper is formed by spring elasticity. It is preferable to prevent the armrest from being detached by engaging the armrest as necessary, or to notify the danger of applying a large force to the armrest.

Further, the motor disposed on the bogie is locked in a stopped state when the armrest is at a predetermined height position, locked in a stopped state when adjusting the height of the armrest, or locked in a stopped state when removing the armrest. In this case, even if the clothes are caught on the operation unit at the time of the above-mentioned lateral transfer or the like, it is safe because the running state does not occur.

If the operating section for driving / running control is arranged substantially in the same plane as the upper surface of the armrest at the position in front of the armrest, the operating section can be operated without placing a burden on the arm or wrist.

When the operating section is provided on the armrest so that the height of the armrest can be adjusted, the same operational feeling can always be obtained regardless of the height of the armrest.

When the left and right armrests are interchangeable with each other, or the operation section is freely attachable to the left and right armrests, it is easy to deal with differences in the dominant arm and obstacles to hemiplegia. .

Further, if the operation section for driving and traveling control is mounted so as to be stowable on one armrest on one side, the operation section does not get in the way during transfer and the operation section does not get caught on clothes or the like. .

In this case, if the operation section is freely retractable below the armrest, the risk of getting caught on clothes can be minimized, and the operation section can be automatically retracted according to the height position of the armrest. For example, it is not necessary to manually perform the storing operation, and it is possible to prevent the clothes from being stuck on the operation unit due to forgetting to store the clothes.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view showing the same operation.

FIG. 5 is a side view showing another operation of the above.

FIG. 6 is a side view showing an example of an unlocking operation unit in the armrest of the above.

7A and 7B show another example of the unlocking operation unit in the armrest of the above, wherein FIG. 7A is a cross-sectional view at the time of locking, and FIG. 7B is a cross-sectional view at the time of unlocking.

FIG. 8 is a cutaway side view showing a height adjustment range of the armrest according to the first embodiment.

FIG. 9 is a cutaway side view showing a height adjustment range of the armrest according to the first embodiment.

FIG. 10 is a cutaway side view showing a height adjustment range of the armrest of the above.

FIG. 11 is a sectional view showing another example of the armrest lock mechanism.

FIG. 12 is a cross-sectional view showing still another example of the armrest lock mechanism.

FIG. 13 is a cross-sectional view showing another example of the armrest lock mechanism.

FIG. 14 is a sectional view showing another example of the armrest lock mechanism.

FIG. 15 is a sectional view showing still another example of the armrest lock mechanism.

FIG. 16 is a cutaway side view showing the armrest retaining mechanism.

FIG. 17 is a cutaway side view showing another example of the armrest retaining mechanism.

FIG. 18 is a cutaway side view showing still another example of the armrest retaining mechanism.

FIG. 19 shows another example of a retaining mechanism for an armrest.
(a) is a side view, (b) is a schematic front view, and (c) is a horizontal sectional view.

FIG. 20 is a flowchart illustrating an example of an operation related to motor stop.

FIG. 21 is a flowchart of another example of the operation relating to the motor stop.

FIG. 22 is a flowchart of still another example of the operation relating to the motor stop.

FIG. 23 is a flowchart of another example of the operation related to the motor stop.

FIG. 24 is a side view showing a stored state of the operation unit.

FIG. 25 shows still another example, in which (a) is a plan view,
(b) is a partial plan view.

FIG. 26 is a plan view of a different example.

FIG. 27 is a diagram illustrating an example of a height relationship between an armrest and an operation unit.

FIGS. 28A and 28B are explanatory views of another example of the height relationship between the armrest and the operation unit.

FIGS. 29A and 29B are explanatory views of still another example of the height relationship between the armrest and the operation unit.

FIG. 30 is a side view showing another example of the arrangement of the operation unit.

FIG. 31 is a front view of another example.

FIG. 32 is a front view of another example.

[Explanation of symbols]

 1 cart 2 seat 4 armrest 5 operation part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichi Mitani 1048 Kazumasa Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. 72) Inventor Noboru Nishiguchi 1048 Kazuma Kadoma, Osaka Pref.Matsushita Electric Works, Ltd. 1048, Kadoma, Kazuma, Kazuma, Matsushita Electric Works, Ltd. (72) Inventor Yoshinori Yuki, 1048, Kazuma, Kazuma, Kadoma, Osaka Prefecture, Ltd. Inside the company (72) Inventor Yoshiyuki Miyake 1048 Odomo Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Works, Ltd. (72) Inventor Reiko Okumura Kadoma, Osaka Oaza Kadoma 1048 address Matsushita Electric Works Co., Ltd. in the F-term (reference) 3D050 AA04 BB03 DD03 EE08 EE15 GG06 KK00 KK14 KK15

Claims (23)

[Claims] 1. A trolley on which a motor, a battery, and the like are mounted, a seat disposed on the trolley, and armrests arranged on both sides of the seat, wherein the armrests can be set at positions below the seat surface of the seats. An electric movable chair, comprising: 2. The electric movement according to claim 1, wherein the armrest is adjustable in height, and a lowermost position of the height adjustment range is a position below a seat surface of the seat. Swivel chair. 3. The height of the armrest can be adjusted steplessly within its height adjustment range.
An electric swivel chair as described. 4. The electric movable chair according to claim 2, wherein the height of the armrest is adjustable stepwise within the height adjustment range. 5. The electric movable chair according to claim 2, wherein the armrest can be positioned in the height direction only at an upper part of the height adjustment range. 6. The electric movement according to claim 2, wherein the positioning means in the height direction for adjusting the height of the armrest is a rack-and-pinion and a lock pin that meshes with the pinion. Swivel chair. 7. A rack-and-pinion and a ratchet pin that meshes with the pinion when the height of the armrest is adjusted.
The electric movable chair according to any one of the above items. 8. The electric movable chair according to claim 6, wherein a plurality of pinions meshing with the rack are provided in a longitudinal direction of the rack. 9. The rack according to claim 2, wherein the positioning means in the height direction at the time of adjusting the height of the armrest is a pair of racks which mesh with each other and are unlocked by separating from each other.
The electric movable chair according to any one of the above items. 10. The electric movable chair according to claim 2, further comprising a stopper for retaining the armrest. 11. The electric movable chair according to claim 10, wherein the stopper by the stopper is releasable. 12. The electric movable chair according to claim 10, wherein the stopper prevents the stopper from being disengaged by engagement by spring elasticity. 13. The electric movable chair according to claim 2, wherein an operation portion for adjusting the height of the armrest is provided on the armrest. 14. The electric motor according to claim 1, wherein the motor arranged on the bogie is locked in a stopped state when the armrest is at a predetermined height position. A movable chair. 15. The electric movable chair according to claim 2, wherein the motor arranged on the carriage is locked in a stopped state when the height of the armrest is adjusted. . 16. The electric movable chair according to claim 1, wherein the motor arranged on the carriage is locked in a stopped state when the armrest is removed. 17. A trolley on which a motor, a battery, etc. are mounted, a seat disposed on the trolley, and a height-adjustable armrest disposed on both sides of the seat. An electric movable chair, wherein the electric movable chair is disposed substantially flush with an upper surface of an armrest at a front position. 18. The electric movable chair according to claim 17, wherein the operation unit is provided on an armrest. 19. The electric movable chair according to claim 18, wherein the left and right armrests are interchangeable. 20. The electric movable chair according to claim 18, wherein the operation unit is attachable to left and right armrests. 21. A trolley on which a motor, a battery, etc. are mounted, a seat disposed on the trolley, and a height-adjustable armrest disposed on both sides of the seat. An electric movable chair, which is attached to an armrest of the vehicle so as to be freely stored. 22. The electric movable chair according to claim 21, wherein the operation unit is freely housed below the armrest. 23. The electric movable chair according to claim 21, wherein the operation unit is automatically stored according to the height position of the armrest.