JPH0938147A - Accelerator lever for motor-driven wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accelerator lever for motor-driven wheelchair for which it is not necessary to install any accelerator lever. SOLUTION: Concerning an accelerator lever 26 for driving motor control for motor-driven wheelchair, this accelerator lever is positioned at a switch box 11 at the center of a steering arm 2, which is operated by the user of a motor-driven wheelchair 1 while using his more skillfulhand, and operated by the more skillful hand. This accelerator lever 26 has a base shaft part 28 for which both terminals parts 281 and 28r are held from side faces onto the switch box 11 while being protruded, guide shaft 30 fixed at any one of both these terminal parts so as to vary the angle and extended in any desired direction, and operating lever 32 which is displaced along this guide shaft so as to be freely slid and is fixed at the desired position of the guide shaft 30, and corresponding to the sliding displacement of this operating lever 32, the position of the operating lever 32 is freely displaced to any prescribed position of the steering arm 2 where the more skillful hand of user is put on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accelerator lever for an electric wheelchair. Specifically, it relates to an accelerator lever that controls a drive motor of an electric wheelchair.

[0002]

2. Description of the Related Art An example of a conventional electric wheelchair is shown in FIGS. Here, as an electric wheelchair, an electric tricycle 1
Is shown.

As shown in FIG. 8, an electric three-wheeled vehicle 1 includes a front wheel 3 located at a front portion of the electric three-wheeled vehicle 1 steered via a steering arm 2a of a steering wheel 2 and left and right rear driving wheels located at a rear portion thereof. Wheels 5l and 5r and rear wheels 5l and 5r
And a drive box 7 under the seat 6 in which devices such as a drive motor (not shown) for driving the vehicle and a charger are arranged. The drive motor of the drive box 7 includes a steering arm 2a and a switch box 11 described later.
The rotation speed of the motor is adjusted by the accelerator lever 9 provided on the steering wheel 2 together with the above.

As shown in FIG. 9, the accelerator lever 9 provided in the steering wheel 2 is a vehicle side from a side surface of a switch box 11 as a steering body including a speedometer 10, a turn signal switch (not shown), a horn switch and the like. Towards the right side (the right side of the vehicle in Fig. 9),
In addition, a person who uses the electric tricycle 1 (hereinafter, simply “user”)
Say. ) Is a front end portion of the steering arm 2a, which is a predetermined portion of the steering arm 2, and a handle grip 13 (on the right side), which allows the user to operate the accelerator lever 9 even if his / her hand is placed on the accelerator lever 9. A portion 9a of the handlebar 9 that protrudes from the switch box 11 (hereinafter referred to as "lever protrusion 9a") is bent forward to be bent in a crank shape, and the handle grip 1
A fixed distance H is provided between the two.

A portion of the accelerator lever 9 inside the switch box 11 (hereinafter referred to as "lever concealing portion 9b").
(See FIG. 9). ) Is rotatably supported in the switch box 11, whereby the protrusion 9 of the lever is
In a vertical plane as shown in FIG. 10, an angle θ between the stop position (shown by a solid line) and the first position (shown by a chain double-dashed line) (hereinafter, “inclination angle θ of the lever protrusion 9a”). It is said that it is possible to rotate within that range.

The protruding portion 9a of the lever is always urged from the first position side to the stop position side by the spring 17 in the switch box 11, and the user moves the accelerator lever 9 from the stop position side. When turned to the first position side, the accelerator lever 9 automatically returns to the original stop position. In this way, by turning the accelerator lever 9 from the stop position side to the first position side, the accelerator lever 9 causes the volume means 15, which is a control member of the drive motor, provided in the switch box 11 to rotate the gear means 1.
It works via 7.

The side of the accelerator lever 9 opposite to the protruding portion 9a of the lever is also projected to the outside of the switch box 11 (hereinafter, this protruding portion will be referred to as "left protruding portion 18").
Say. ), A protective cover 20 is attached to the left protrusion 18. When the protective cover 20 is removed, a through hole 18a as shown in FIG. 11 is exposed in the leftward protruding portion 18, and the screw 22 is passed through the through hole 18a,
When the screw 22 is screwed into the screw hole 24a formed in the left-hand accelerator lever 24, the left-hand accelerator lever 24 is integrated with the leftward protruding portion 18, which allows not only the right-hand operation but also the left-hand operation. You can also operate.
Therefore, it is convenient for the user to operate with the left hand.

By the way, there are individual differences in the size of the hand.
Therefore, the lever protrusion 9a and the handle grip 13
There is a case where the user may find it difficult to use the accelerator lever 24 depending on the distance H between the lever and the inclination angle θ of the lever protrusion 9a. Further, for a user who is more convenient to operate with the left hand, the left-hand accelerator lever 24 must be separately provided, which imposes a financial burden.

[0009]

The vehicle of the present invention has been invented in view of the above circumstances, and the problem to be solved is to operate the accelerator lever regardless of the size of the user's hand. The purpose of the present invention is to provide an accelerator lever for an electric wheelchair that can be easily adjusted and that can be attached only to the user's dominant hand side, thereby eliminating the need for providing an unnecessary accelerator lever.

[0010]

The accelerator lever of the electric wheelchair according to the present invention solves the above problems and is as follows. That is, the present invention is an accelerator lever for controlling a drive motor of the electric wheelchair, which is provided in a steering body provided with a steering arm that is operated by a user of the electric wheelchair with at least his / her dominant hand and operated by the dominant hand. The accelerator lever is fixed to the steering main body such that both ends thereof are protruded from the side surface of the main body, and the one end of the both ends of the base shaft is variably fixed. And a guide shaft extending in a desired direction, and an operation lever slidably displaced along the guide shaft and fixed at a desired position of the guide shaft. By the slide displacement, the position of the operation lever is moved with respect to a predetermined portion of the steering arm on which the dominant hand of the user is placed. Place was freely.

Here, the phrase "fixed to be variable in angle" means that a boss portion having a through hole through which one end portion of the base shaft portion passes is formed in a guide shaft fixed to one end of the base shaft portion, and this boss portion is formed. This means that the guide shaft is tightened by a fastening means such as a bolt at its boss portion after the angle is set to a desired angle by the user of the electric wheelchair through one end of the base shaft portion.

Therefore, according to the present invention, the base shaft portion is
Since both ends of the steering main body are held in a protruding state from the side surface of the main body, and the guide shaft is fixed to either one of both ends of the base shaft, the accelerator lever can be used by an electric wheelchair user. It is arranged on either side of the desired left and right. Therefore, the user of the electric wheelchair can arrange the accelerator lever on the dominant hand side of the person, so that an unnecessary accelerator lever as described in the related art can be omitted.

Further, since the guide shaft is fixed to the base shaft portion to which the guide shaft is fixed in a variable angle, the accelerator lever can be set at a desired angle preferred by the user of the electric wheelchair.

Further, the operating lever is slidably displaced along the guide shaft and is fixed at a desired position of the guide shaft, and the sliding displacement of the operating lever causes the steering arm on which the dominant hand of the user is placed. Since the position of the operation lever can be freely displaced with respect to the predetermined portion, it can be said that the accelerator lever can be easily operated regardless of the size of the hand of the user.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The accelerator lever of an electric wheelchair of the present invention will be described below in detail based on the illustrated embodiment of the invention. Since there is no change in the wheelchair itself described in the section of the prior art, the wheelchair and its components described in the following description are given the same reference numerals as those described in the section of the prior art, and description thereof is omitted. To do.

FIG. 1 is an overall perspective view of an electric tricycle 1 adopting an accelerator lever 26 of an electric wheelchair according to the present invention, FIG.
2 is a plan view of the same, FIG. 3 is an enlarged view of a region III of FIG. 2, FIG. 4 is a view seen from the direction of arrow IV of FIG. 3, FIG. 5 is a view of the direction of arrow V of FIG. 3, and FIG. FIG. 6 shows a modified example of the accelerator lever of the electric wheelchair according to FIG.
6A and 6B are views corresponding to FIGS. 3 and 5, respectively.

The accelerator lever 26 is provided on a switch box 11 having a steering arm 2a that is operated by a user (not shown) of the electric wheelchair 1 with at least his / her dominant hand, and the accelerator lever 26 is operated by the dominant hand. It is a lever for controlling the drive motor.

The accelerator lever 26 has an accelerator shaft 28 serving as a base shaft portion in which both end portions 28l and 28r are held in a protruding state from the left and right side surfaces of the switch box 11 so as to cross the switch box 11, and the accelerator shaft 28 of the accelerator shaft 28. A guide shaft 30 fixed to one end of the both ends 28l and 28r, the right end 28r in this embodiment, is variably angled, and extended in a desired direction. It has at least an operation lever 32 which is slidably displaced along the guide shaft 30 and fixed at a desired position of the guide shaft 30.

The accelerator shaft 28 has both ends 28
Serrations are radially cut on the peripheral surface of l · 28r, and a bolt hole 31 is cut coaxially with the central axis 29 of the accelerator shaft 28 on the end surface of the end portion 28l · 28r. The central axis 29 is also the central axis of the handle grip 13.

The guide shaft 30 has a boss portion 34 fitted on the right end 28r of the accelerator shaft 28, and a guide rod 36 extending straight from the outer periphery of the boss portion 34 in the radial direction.
Consists of The boss portion 34 is a flat circular body having a through hole 34a formed in the center thereof through which the right end 28r of the accelerator shaft 28 passes, and the through hole 34a is also serrated to engage the serration of the right end 28r. It is supposed to meet.

The bolt indicated by reference numeral 38 is adapted to be screwed into the bolt hole 31 of the accelerator shaft 28. With such a structure, the accelerator shaft 28
The guide shaft 30, which is fitted to the outside, is coupled to the accelerator shaft 28 while being bent at a right angle to the accelerator shaft 28.

The boss portion 34 of the guide shaft 30 may be a spring grip with a screw as shown in FIGS. 6 and 7. In this case, since the boss portion 34A is firmly fixed to the accelerator shaft 28 by the bolt 35a and the nut 35b, the serration formed on the accelerator shaft 28 and the boss portion 34 becomes unnecessary in this case. However, in order to prevent the boss portion 34A and the accelerator shaft 28 from slipping, a portion of the accelerator shaft 28 or the boss portion 34A where both are joined may be knurled.

As shown in FIG. 4, the operating lever 32 includes a grip portion 40 that is gripped by the user's dominant hand and a fitting portion 42 that is integrally formed at one end of the grip portion 40 and that is fitted onto the guide rod 36. Become. The operation lever 3 is attached to the fitting portion 42 so as to traverse the fitting portion 42 and with respect to the guide rod 36.
The through hole 42a having the same cross sectional shape as the guide rod 36 and slightly larger than the cross sectional shape so that the 2 can slide.
Are formed. In this embodiment, since the guide rod 36 has a quadrangular cross section, the through hole 42a also has a quadrangular shape. The shape is not limited to a square, and may be a round shape or a hexagonal shape. Further, another through hole 42b is formed on one side surface of the fitting portion 42 so as to be orthogonal to the through hole 42a, and a nut 44 is formed on the one side surface so as to face the through hole 42b.
Is stuck. A screw 46 is fitted into the nut 44, and by tightening the screw 46, the operation lever 32
Is fixed to the guide rod 36, and by loosening the screw 46, the operation lever 32 can freely slide with respect to the guide rod 36.

By this sliding displacement of the operating lever 32, the position of the operating lever 32 with respect to the handle grip 13, which is a predetermined portion of the steering arm 2a on which the user's dominant hand is placed, that is, the operating lever 32 and the handle grip 13 are arranged. The interval H (the H described in the prior art) can be displaced. When used for the left hand, the accelerator lever 26 may be attached to the left end portion 28l of the accelerator shaft.

Then, the electric wheelchair 1 having such a structure
According to the accelerator lever 26, the accelerator shaft 28
Is the switch box 11
Since both end portions 28l and 28r are held in a protruding state from both side surfaces of the guide shaft 30 and the guide shaft 30 is fixed to the right end portion 28r of the both end portions 28l and 28r, the accelerator lever 26
Are arranged on either the left or right side desired by the user. Therefore, the user can arrange the accelerator lever 26 on the dominant hand side of the person, so that the unnecessary accelerator lever 26 as described in the related art can be omitted.

Further, the guide shaft 30 is variably fixed to the accelerator shaft 11 to which the guide shaft 30 is fixed by an angle θ (corresponding to the inclination angle θ of the protrusion 9a of the lever of the prior art. See FIGS. 5 and 7). Therefore, the accelerator lever 26 can be set at a desired angle preferred by the user. In addition,
The boss portion 34 of the guide shaft 30 that is serrated and joined is
Although the angle can be changed intermittently with respect to the accelerator shaft 28, the boss portion 34A of the modified example can continuously change the angle.

The operating lever 32 is connected to the guide shaft 30.
Is slidably displaced along the guide shaft 30 and fixed at a desired position of the guide shaft 30, and the slide displacement of the operating lever 32 determines the position of the operating lever 32 with respect to the handle grip 13 on which the user's dominant hand is placed. Since H can be freely displaced, it can be said that the accelerator lever 26 can be easily operated regardless of the size of the user's hand.

[0028]

According to the present invention, it is easy to operate the accelerator lever regardless of the size of the user's hand, and the accelerator lever is attached only to the user's dominant hand side to provide an unnecessary accelerator lever. You can avoid it.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an electric tricycle adopting an accelerator lever of an electric wheelchair according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged view of a region III in FIG.

FIG. 4 is a view as seen from the direction of arrow IV in FIG.

5 is a view as seen from the direction of arrow V in FIG.

FIG. 6 is a diagram showing a modified example corresponding to FIG.

7 is a view as seen from the direction of arrow VII in FIG.

FIG. 8 is a diagram for explaining a conventional technique.

9 is an enlarged view of a main part of FIG.

10 is a diagram viewed from the direction of arrow X in FIG.

FIG. 11 is a view showing a mounting state of a left-hand accelerator lever according to a conventional technique.

[Explanation of symbols]

 1 Electric Wheelchair 2 Steering Arm 11 Steering Main Body 13 Predetermined Part (Steering Arm) 26 Accelerator Lever 28 Base Shaft 28l End 28r End 30 Guide Shaft 32 Operation Lever

[Procedure amendment]

[Submission date] February 15, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction contents]

[0003] electric tricycle 1, as shown in FIG. 8, a front wheel 3 positioned on the front of the electric tricycle 1 steered through the scan te <br/> A ring arm 2, a drive that is located in the rear of the left and right rear wheels 5l · 5r, distribution to equipment under seat sheet 6 wearing such unshown driving motor and charger for driving the rear wheel 5l · 5r
It is placed . Also, for driving dynamic motor, the accelerator lever 9 disposed in the switch box 11 section later, the rotational speed of the motor is adjusted.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004] A Kuserureba 9, as shown in FIG. 9,
FIG turn signal switch not shown are projected to the vehicle side (in FIG. 9 vehicle right side) from the side of the switch box 11 having a horn switch and the like, also, a person using an electric tricycle 1 (hereinafter simply " user "called.) is of the distal end portion of the steering arm 2 for gripping c down to $ grip 1
A portion 9a of the accelerator lever 9 that protrudes from the switch box 11 (hereinafter referred to as a "lever protrusion 9a") so that the user can operate the accelerator lever 9 with his / her hand on 3 (on the right side). ) Is bent forward and bent like a crank, and a fixed gap H is provided between the handle and the handle grip 13.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

The accelerator lever of the electric wheelchair according to the present invention solves the above problems and is as follows. That is, the present invention provides an accelerator lever for controlling a drive motor of the electric wheelchair, which is provided in a central switch box equipped with a steering arm that is operated by a user of the electric wheelchair with at least his / her dominant hand and operated by the dominant hand. The accelerator lever includes a base shaft part that is held by the switch box in a state where both end parts project from the side surface, and one end part of the both end parts of the base shaft part. A guide shaft fixed to a variable angle and extended in a desired direction,
And a steering lever that is slidably displaced along the guide shaft and fixed at a desired position of the guide shaft, and the steering lever on which the dominant hand of the user is placed by the sliding displacement of the manipulation lever. The position of the operation lever is freely displaceable with respect to a predetermined portion of the arm.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

Therefore, according to the present invention, the base shaft portion is
Both end portions from the side face to the switch box is held in a projected state, the guide shaft at one end one of two ends of the base shaft portion is fixed, an accelerator lever, electric wheelchair user desires It will be placed on either side. Therefore, the user of the electric wheelchair can arrange the accelerator lever on the dominant hand side of the person, so that an unnecessary accelerator lever as described in the related art can be omitted.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

The accelerator lever 26 has a switch box 1 provided with a steering arm 2 which is operated by a user (not shown) of the electric wheelchair 1 with at least his / her dominant hand.
1 is a lever for controlling the drive motor of the electric wheelchair 1 which is provided on the control unit 1 and is operated by the dominant hand.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The boss portion 34 of the guide shaft 30 may be a clamp as shown in FIGS. 6 and 7. In this case, since the boss portion 34A is firmly fixed to the accelerator shaft 28 by the bolt 35a and the nut 35b, the serration formed on the accelerator shaft 28 and the boss portion 34 becomes unnecessary in this case. However, in order to prevent the boss portion 34A and the accelerator shaft 28 from slipping, the accelerator shaft 28 or the boss portion 34
Knurling may be applied to the portion of A that joins together.

[Procedure amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0024

[Correction method] Change

[Correction contents]

By this sliding displacement of the operating lever 32, the position of the operating lever 32 with respect to the handle grip 13, which is a predetermined portion of the steering arm 2 on which the user's dominant hand is placed, that is, the operating lever 32 and the handle grip 13. Interval H (H described in the prior art
That. ) Can be freely displaced. When used for the left hand, the accelerator lever 26 may be attached to the left end portion 28l of the accelerator shaft.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of drawings]

FIG. 1 is an overall perspective view of an electric tricycle adopting an accelerator lever of an electric wheelchair according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged view of a region III in FIG.

FIG. 4 is a view as seen from the direction of arrow IV in FIG.

5 is a view as seen from the direction of arrow V in FIG.

FIG. 6 is a diagram showing a modified example corresponding to FIG.

7 is a view as seen from the direction of arrow VII in FIG.

FIG. 8 is a diagram for explaining a conventional technique.

9 is an enlarged view of a main part of FIG.

10 is a diagram viewed from the direction of arrow X in FIG.

FIG. 11 is a view showing a mounting state of a left-hand accelerator lever according to a conventional technique.

[Explanation of reference numerals] 1 electric wheelchair 2 steering arm 11 switch box 13 predetermined part (of steering arm) 26 accelerator lever 28 base shaft portion 28l end portion 28r end portion 30 guide shaft 32 operation lever

[Procedure amendment 10]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 11]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

[Fig. 2]

[Procedure amendment 12]

[Document name to be amended] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction contents]

[Figure 3]

[Procedure amendment 13]

[Document name to be amended] Drawing

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

[Figure 5]

[Procedure Amendment 14]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

[Procedure Amendment 15]

[Document name to be amended] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction contents]

FIG. 7

[Procedure Amendment 16]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

[Figure 8]

[Procedure amendment 17]

[Document name to be amended] Drawing

[Correction target item name] Figure 9

[Correction method] Change

[Correction contents]

[Figure 9]

[Procedure amendment 18]

[Document name to be amended] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction contents]

FIG. 10

Claims (1)

[Claims] 1. An accelerator lever for controlling a drive motor of the electric wheelchair, which is provided in a steering body provided with a steering arm for a user of an electric wheelchair to place and operates with at least his or her dominant hand, and which is operated by the dominant hand. The accelerator lever is fixed to the steering main body such that both ends thereof are held in a protruding state from the side surface of the main body, and an angle variable is fixed to either one of the both ends of the base shaft. And a guide shaft extending in a desired direction and an operation lever slidably displaced along the guide shaft and fixed at a desired position of the guide shaft. The position of the operation lever can be freely displaced with respect to a predetermined portion of the steering arm on which the dominant hand of the user is placed by the displacement. The accelerator lever of the electric wheelchair.