JPH0270528A - Motor-driven chair - Google Patents

Abstract

PURPOSE:To make a chair member easy of access to a working table or a desk on the front side, and besides to make easy of performing handwork freely on extending hands forward with a posture sitting down by opening the chair the front for providing a step on a chassis at the lower part, while providing an operation bed on an arm rest member on side of the chassis. CONSTITUTION:A sitter sits down to a chair 3 from the front on placing his feet on a step 5. Next thereto, he makes the chair 3 run and approach to a working bed or a desk on the front side on making an operating member on an operating bed 7 at side arm rest member 6 operate, a motor drive electrically and a wheel of a chassis 4 rotate through transmitting.

Description

[Detailed description of the invention] Industrial applications This invention relates to an electric chair.

BACKGROUND ART AND PROBLEMS TO BE SOLVED BY THE INVENTION An electric chair that travels by driving and rotating wheels using an electric motor has an operation console provided at the front of the chair that has levers, switches, etc. for operating the chair. Now, when you are sitting in a power chair in the N position and performing certain tasks or office work, you cannot approach the workbench or desk, etc. because the control panel is on the front side, and you cannot reach forward. It is difficult to do, and it can easily get in the way of work.

(Invention of Claim 1) Means for Solving the Problem This invention provides a wheel (
2) and a chair (3), this chair (
3) open the front and provide a step (5) at the bottom,
The electric chair has a configuration in which an operation table (7) is provided on a side armrest (6).

Functions and Effects of the Invention While sitting on the chair (3) with the feet on the step (5) and operating the operating section of the operating table (7) on the side armrest (6), the motor (1) is powered. The vehicle travels by rotating the wheels (2) through transmission.

In this type of electric chair, the front side of the chair (3) is open and the operating table (7) is on the side, so the chair (3) can be used as a front workbench or desk. It is easy to approach objects, etc., and it is easy to reach forward and do manual work while sitting. Further, since the step (5) is located at the lower front side, it does not easily get in the way, and it is easy to stand up against a workbench, desk, etc., so it is easy to take a maneuverable posture.

(Invention of Claim 2) Means for Solving the Problem This invention provides a wheel (
2) and a chair (3), a rotatable bumper ring (8) is provided around the front step (5) of the vehicle body (4), surrounding the step (5). The configuration of the chair.

Functions and Effects of the Invention While sitting on the chair (3) with the feet on the step (5), the vehicle travels while rotating the wheels (2) electrically driven by the motor (1). The front step (5) part of the foot part is located in front of the chair (3), but since a rotatable bumper ring (8) is provided on the outer periphery of this step (5) part, this bumper When the ring +81 comes into contact with a structure or obstacle while driving, this bumper ring (8) rotates left and right with respect to the step (5) to reduce frictional resistance and improve steering. Evacuation to the side can be performed smoothly. In particular, since the bumper ring (8) is rotatable so as to surround the outer periphery of the stem knob (5), it is easy to follow the turning radius by steering the vehicle body (4), and obstacles are at the corners. Even if it is local like a thing,
Since any part of the bumper ring (8) comes into contact with the obstacle, it is not only possible to easily avoid the obstacle by turning the steering wheel, but also to avoid the obstacle from the side when approaching the workbench, etc. This bumper ring (8) makes it easier to turn when retreating.

(Invention of Claim 3) Means for Solving the Problem This invention provides a forward position (F) for transmitting the vehicle body (4) forward by operating the control lever (9) from the neutral position (N) to the front side.
) to the forward guide path (1
) to the reverse position [(R) reverse guide path f
10, and these forward position (F) and reverse position (R
) The electric chair is configured to include steering guide passages (10L), (10R), (11L), and (11R) that are operated in the left and right directions to change the steering direction.

Functions and Effects of the Invention When operating the vehicle body (4) while sitting on the electric chair (3), use the operating lever (9). When placed in position (N), the electric motor (1) is in a stopped state and the wheels (2)
No drive transmission is performed when moving the vehicle body (4) forward.

By moving the operating lever (9) to the forward direction guide passage (1 [I) to the forward position! (F),
The wheels (2) are driven forward by the forward rotation of the motor fil. When performing this forward steering, move this operating lever (9) to the forward position (of the forward guide passage (1)).
By moving from F) along the left and right steering guide passages (10L) (10R), left steering, right steering, or turning is performed.

When traveling in reverse or performing reverse steering, the operating lever (9) must be moved from the neutral position (N) along the reverse guide path (Iυ) to the steering guide path (11L) (11R). This is done in the same way as the forward operation.At this time, the motor (1) is rotated in the reverse direction.

In this way, the forward guide passage +ll11 and the reverse guide passage (1υ is the neutral position (N)) guide the operation of the operating lever (9).
steering guide passages (10L), (10R), (11L) (
11R), the operating guide direction of the operating lever (9) matches the traveling and steering direction of the vehicle body (4), so the operating direction of the operating lever (9) is accurate. This can reduce the number of erroneous operations.

(Invention of Claim 4) Means for Solving the Problem This invention provides a wheel (
The electric chair has a structure in which casters (18) which can be moved back and forth are provided on the front side of a vehicle body (4) having a chair (2) and a chair (3).

Functions and Effects of the Invention The wheels (2) are driven by the motor (11),
The vehicle body (4) is running. At this time, the front side of the vehicle body (4) is supported and driven by casters (+2). These casters (121) can be adjusted to move forward and backward relative to the vehicle body (4) on the front side of the chair (3), so when driving, move these casters (121 forward) to stabilize the vehicle body (4). If the casters (1+5) get in the way of a structure facing the front, such as a workbench or desk, move them to the rear to bring the chair (3) as close to the object as possible. be able to.

Embodiment In FIGS. 1 to 9, the vehicle body (4) is provided with a wheel case (131) at the rear and a circular step (5) at the front.
) has been established. The wheel case (1'5) is provided with a differential transmission (141) using a differential gear in the center, and from the left and right differential gears (llil) of this differential transmission 04, the wheels (IEi) of each left and right wheel (2) are installed. ).This differential transmission α4 has a configuration in which the electric motor (1) rotates through a reducer (lη), a transmission chenograph (11IS, etc.), and the left and right wheels (10 Each brake (1
It is provided to brake the gl.

The chair (3) is rotatably supported by a support 3G on the vehicle body (4). The chair (3) may be rotated by locking and releasing the chair (3) by operating a lever located on the chair (3) side, thereby fixing the position in the rotation direction.

The armrest (6) having the operating table (7) is connected to the column (2+3
It is provided so as to be rotatable around the support shaft 03 in the vertical direction with respect to the tip of the arm I21) which is attached so as to be rotatable left and right around the
It is placed along the side of the chair (3). This armrest part (6) can be rotated left and right around the pillar +213 of the arm 12+1,
This arm 21) can be transferred to either the left or right side of the chair (3) by rotating back and forth around the tip support shaft (2i5), and the transfer position is fixed.
7) is provided with operating tools such as an operating lever (9) and a switch.

It is provided in the front part of the armrest part (6).

On the upper surface of the operating table (7), a forward guide passage (11) that rotationally guides the operating lever (9) and a reverse guide passage (Iυ) are formed in series in the front and rear direction around the neutral position (N). This forward guide path (forward position (F) of the front end of 11)
Steering guide passage (10L) (10R) along the left and right direction from
Furthermore, steering guide passages (11L) and (11R) are formed along the left and right directions from the rear end of the reverse guide passage (11). This forward position! i! (F) is provided with a forward switch (2) on the lower side, and forward rotation of the motor (1) is turned on and off by approaching and separating the operating lever (9). In addition, a reverse switch C4 is provided at the reverse position (R), and the reverse rotation of the motor (1) is turned on by approaching and separating the operating lever (9).
Turn off.

The operating lever (9) is provided with a lower end that can be freely rotated back and forth around the lever shaft, and this operating lever (9) is equipped with a plate spring (29 made by Arm Boss Co., Ltd.), and is flexible in the left and right direction. Steering guide passage (10L) (10R), (11L) (1
1R), the forward position (F) on the neutral side and the reverse position (R) are always on the neutral side.
), makes a sudden return to. Rod a from the arm boss (5)
! Switch changeover board C through l! The forward switch (2) and reverse switch +21 are arranged on this switch changeover panel (to), and by rotating the control lever (9) back and forth, the forward switch (2) and reverse switch (21) are connected to each other. 2) O
In the reverse position (R), the reverse switch C4 is turned on. In the ON/OFF range of these forward switch (to) and 12 reverse switches, the operating lever (9) is in the neutral position! (N) Now turn it off and go to this neutral position! (N) to the forward position (F) of the front end, or the reverse position (R) of the rear end.
) Each switch (2) may be turned ON during the eccentric positioning process.
) 24 turns the motor (1) on and off for forward and reverse rotation via the relay contact @0υ.

On the left and right sides of the operating lever (9), there is a pair of arm plates G?1C (3 being the axis (B)) for interlocking the brakes (1
It is provided so that it can freely rotate in the left and right directions. These arm boards @03 are elastically biased toward mutually opposite sides with respect to the shaft (b) to move the operating lever (9) into the forward guide path (Il).
1 or the reverse guide path OD.

In addition, between these two guide passages (11
) and clip the neutral position (N) so as to sandwich the operating lever (9) from both left and right sides. Each arm board (to) 03 is provided with an arm oQ, which is interlocked to brake each of the left and right wheels (10) ((5) via a rod (5), and the left arm When the board (to) is rotated around the axis (b) to feed waste, the left wheel (2) is braked, and when the right arm board 03 is rotated to the right, the right wheel (2) is braked. The configuration is as follows.

When the pair of left and right wheels (2) are transmitted and rotated via the differential transmission device 041 by transmission (11), the steering guide path ( 10L) (11L) or (10R)
(11R), the arm panel (to) or C (3
is rotated, and the left and right brakes (11) are braked to perform a steering turn. For example, when the left wheel is braked, the rotation of the right unbraked side is accelerated. The steering angle, turning radius, etc. can be freely controlled by adjusting the strength of the braking force of this brake (13).

The outer periphery of the bumper ring (8) in step (5) is made of rubber, pneumatic tires, or the like. Step (
5) Grooved guide roll rotatably provided on the back side (to)
can be guided and rotated.

In addition, it is preferable to provide an adjustment dial on the operation console (7) to adjust the rotation of the motor (1).
1) Electrify.

The difference from the upper side in Figures 10 to 13 is that the vehicle body (
4), the caster 0 is moved in the front and back direction, and the caster 12+ is operated in conjunction with the steering lever (G) of the operation console (7), and when steering, the differential transmission device 04 The transmission rotation is braked to allow slow turning and steering.

A caster frame 0211 is provided at the foot of the vehicle body (4) so as to be movable back and forth so as to be held and guided by a pair of upper and lower guide rolls, and a caster frame 0211 that can be freely steered by an operating wire +43 is provided at the front end of this caster frame. The casters are the steering axis of the ID.

The caster frame is configured to move back and forth or adjust its movement directly or by remote control using levers, wires, etc.

The steering lever bend protrudes toward the inside of the operation console (7) and is provided so as to be rotatable back and forth around the axis 09, thereby wrapping the operation wire IA3 around the reel (A) and rotating the caster 0. In addition to interlocking the steering, by grasping the brake lever (equipment) provided on this steering lever (to), you can connect the differential transmission via a wire (to)! ! By applying the brake provided on the sprocket (G) of 04, the transmission rotation of the left and right wheels (2) is slowed down, and the steering and
Smooth turning is achieved by differential.

Also, (5υ is a forward/reverse switch that switches between forward and backward movement.
The forward/reverse changeover switch (50) is installed on the operation console (7) and switches the motor (1) between forward and reverse rotation. It may also be provided to brake the output shaft of the field.

When you push the steering lever forward, the casters (1'a
is steered to the right. At this time, if the vehicle is traveling at a high speed, grip the brake lever at the same time to apply an appropriate amount of braking force. As the traveling speed decreases, the wheels (2) are driven by the differential of the differential transmission device 0@, and are steered and turned. Also, when the steering lever curve is pulled rearward, the caster 0 is steered to the left in the same manner as described above.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and Figure 1 is a plan view;
Fig. 2 is a side view, Fig. 3 is a front view, Fig. 4 is a partially enlarged side sectional view, Figs. 5 and 6 are a partial plan view, and Fig. 7 is a partially rear sectional view. Figure 8 is a diagram of the transmission mechanism partially cut away.
Fig. 9 is a partial circuit diagram, Fig. 10 is a plan view showing another embodiment, Fig. 11 is a side view thereof, Fig. 12 is a front view thereof, and Fig. 13 is a diagram of a part of the operating mechanism. . In the figure, (1) is a motor, (2) is a wheel, and (3) is a chair. (4) is the vehicle body, (5) is the step, (6) is the armrest, (
7) is the operation console, (8) is the bumper ring, (9) is the operation lever, (+(I is the forward guide path, (10L) (10R)
) is the steering guide passage, f+11 is the reverse guide passage, (11L
) (11R) indicates the steering guide path, f121 indicates the caster, (F) indicates the forward position, (N) indicates the neutral position, and (R) indicates the reverse position.

Claims (1)

[Claims] 1. A vehicle body (4) having wheels (2) and a chair (3) that are rotated by a motor (1), with the front of the chair (3) open and a step ( 5), and an operating table (7) is provided on a side armrest (6). 2. On the outer periphery of the front step (5) of the vehicle body (4), which has wheels (2) and a chair (3) that are transmitted and rotated by a motor (1), the step (5) is surrounded and freely rotatable. An electric chair equipped with a bumper ring (8). 3 A forward guide path (10) leading to the forward position (F) where the operating lever (9) is operated from the neutral position (N) to the front to transmit the vehicle body (4) forward, and a forward guide path (10) leading to the forward position (F) where the vehicle body (4) is transmitted forward by operating the operating lever (9) from the neutral position (N) to the rear. ) to the reverse position (R) for reverse transmission (11)
and a steering guide passage (which is operated from the forward position (F) and the reverse position (R) in the left and right directions to change the steering direction, respectively).
An electric chair equipped with 10L) (10R) (11L) (11R). 4. An electric chair that is provided with casters (12) that can be moved back and forth on the front side of a vehicle body (4) that has wheels (2) and a chair (3) that are rotated by a motor (1).