JPH09238985A - Body structure of motor-driven wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body structure of a motor-driven wheelchair with a smart appearance wherein a battery charger is carried and a harness, etc., are built in the same case. SOLUTION: A battery 16, a battery charger 19, a main control box 20 and a storing part 13 for a harness are all stored in a battery case 3 arranged below a chassis frame main body 2 and provided with a cover on its top part and it is made removable from the chassis frame main body 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure for an electric wheelchair, and more particularly to a vehicle body structure for an electric wheelchair capable of accommodating all electrical components such as a battery and a men's control box.

[0002]

2. Description of the Prior Art As shown in an exploded view of FIG. 7, a conventional vehicle body structure of an electric wheelchair has a basket-shaped battery receiver b made of iron wire suspended under a chassis frame body a. Is fixed integrally with the frame main body a, and two batteries c and a main controller d and a harness e between them are housed in the bottom surface of the battery receiver b. Of these, the main controller d is provided via a bracket or the like. Is fixed to the frame body a with screws or the like, and is arranged as shown in the plan view of FIG.

Harnesses e for electrically connecting the above components are bundled in a frame main body a by a belt clamp or the like, but are exposed to the outside as shown in FIG.

Conventionally, the charger f (shown in FIG. 9) for charging the battery c has not been mounted on the vehicle.

[0005]

Therefore, the conventional structure as described above has the following drawbacks.

1) When traveling a long distance, it becomes impossible to move when the amount of stored electricity in the battery is exhausted. Therefore, it is necessary to provide another basket and carry the charger in it.

2) Since the harnesses, the main controller, and the battery charger in the separate basket are exposed to the outside, a structure that protects them from the outside in addition to waterproofing and dustproofing is necessary. Becomes

3) Especially, the harnesses placed in an exposed state spoil the appearance.

4) Although the chassis frame body of a wheelchair is often remodeled according to the user, at this time, a battery receiver or the like for mounting the electric components integrated with the chassis frame body must be made.

5) Even in the case of the current chassis frame main body, the number of parts is large, and particularly the welding man-hour is large.

6) Since the upper and lower surfaces of the battery are exposed, the battery, floor, etc. are not protected against urine of passengers, spills when eating or drinking, or dripping of battery fluid.

[0012]

SUMMARY OF THE INVENTION The present invention provides a vehicle body structure for an electric wheelchair in which a battery charger is mounted on a vehicle and a harness and the like are also incorporated in the same case to solve the above problems. As a means for solving the problem, as a means for solving the problem, all the electrical components including the battery charger can be built in a case with one lid, and can be configured to be detachable from the chassis frame body. That is, it has nothing to do with the modification of the chassis frame body.

That is, according to the first aspect of the present invention, in the battery case arranged below the chassis frame main body,
The battery, the battery charger, the main control box, and harnesses are housed, and a battery cover is provided on the upper portion to form a battery case assembly. The invention according to claim 2 is the invention according to claim 1. In the battery case, a battery is arranged in the center, a main control box is arranged on one of the left and right sides, a battery charger is arranged on the other side, and harnesses are arranged on the rear part, and the invention according to claim 3 is the battery according to claim 1. The case is detachably attached to the chassis frame body.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION A vehicle body structure of an electric wheelchair according to the present invention will be described below with reference to an embodiment shown in FIGS.

FIG. 1 is an external side view of an electric wheelchair 1 according to the present invention, in which a battery case 3 is provided below a chassis frame body 2. This battery case 3
Is located between the front wheel 4 and the rear wheel 5 in the front-rear direction. In the figure, 6 is a seat, 7 is an armrest, 8 is a back seat, 9 is a footrest, and 10 is a control lever.

FIG. 2 is a perspective view of the vehicle body structure including the chassis frame body 2 and the battery case 3 shown in FIG. 1 and the electrical components housed in the battery case 3, which are developed.
FIG. 3 is a side view showing a mounted state of the chassis frame body 2 and the battery case 3.

In FIG. 2, the chassis frame body 2 is
The left and right chassis frames 2a, 2b having an appropriate interval are formed into a frame shape in which front and rear members 2c, 2d are coupled to each other, and the inside thereof is a space portion 11 surrounded by the members.

The battery case 3 has a bottomed structure having a size that can be accommodated in the space 11, and is formed in a rectangular box shape that is long in the left-right direction. Ribs 12 for waterproofing harnesses are provided, which include a pair of extending side surfaces and a surface connecting the side surfaces.

Further, there are side plates 13a, 13a having a substantially triangular shape on the outer side in contact with both side faces of the rib 12, and by connecting these side plates along the rib 12, there is a storage part having a space for accommodating harnesses. 13 is formed,
The storage portion 13 is fixedly provided so as to project from the outer side of the rear surface of the battery case 3 to the upper portion.

Further, the members 2c, 2 of the chassis frame body 2 are provided on the front and rear upper portions of the battery case 3, respectively.
When the battery case 3 is attached to the chassis frame main body 2, the receiving bases 3a and 3b that engage with the d are provided. Is overlapped with the bracket 14 having an arcuate cross section from above the member 2c, and the other is directly from above from above with fastening members 15, 1 such as bolts and nuts.
5 can be fixed.

A pair of batteries 16, 16 are arranged in the center of the battery case 3 thus formed,
Partition plates 17 and 1 are provided on both outer sides of the batteries 16 and 16, respectively.
It is divided by 8.

On the outside of the partition plate 17, which is the left side when viewed from the front, as shown in the left half of FIG. 4 (A), the battery charger 1
9 is arranged, and a main control box 20 is arranged outside the partition plate 18 on the right half side which is not shown in FIG. 4A.

In this case, the battery case 3 is shown in FIG.
As shown in the enlarged cross section, rib rails 3c having grooves for waterproofing are provided on the bottom surface between the battery 16, the battery charger 19 and the main control box 20, respectively. By inserting the partition plates 17 and 18 into the groove portions of the rib rail 3c, the battery 16, the battery charger 19 and the main control box 20 are inserted.
Since the space is completely partitioned off, a battery chamber 3d dedicated to the battery 16 is formed in the central portion, and it is possible to perform waterproofing and dustproofing from the outside.

Although the fixing means for the battery charger 19 and the control box 20 are not shown here,
The battery case 3 and the partition plates 17 and 18 are fixed to each other with screws or the like.

Although the upper surfaces of the battery charger 19 and the main control box 20 are not covered as shown in FIG. 4 (A), the chassis frame main body 2 passes through the upper portions thereof, so that both of them are not covered. It will be protected against external contact.

Further, a battery cover 22 for accommodating the harnesses 21 connected to the battery 16 in the storage 13 and covering them is provided above the battery chamber 3d, and is fixed to the battery case 3 by the fixing pin 23. Installed. Therefore, the battery 16 is prevented from being contaminated by the drops from the upper surface.

In FIG. 3, 22a is a rib for waterproofing the harnesses 21 provided on the cover 22 side. As a result, the harnesses 21 are also separated from the outside in the storage portion 13, and waterproof, dustproof, and contact with the outside are also prevented.

In this embodiment, the harnesses 21 are divided into five at the front end and two at the rear end, and when viewed from the front, the right terminal is the main control box 20 and the left terminal is In the battery charger 19, the three terminals at the center are respectively connected to the battery 16, and the two terminals of the rear terminals are connected.
One is connected to a motor (not shown).

FIG. 5 is a plan view showing the arrangement of electrical components in the battery case 3 attached to the chassis frame body 2, and FIG. 6 is a perspective view of the battery case 3 shown in FIG. 5 with the battery cover 22 attached. As shown in FIG. 6, the front bracket 14 serves both to attach the battery case 3 to the chassis frame body 2 and to attach the battery cover 22.

That is, the battery case 3 attached to the chassis frame body 2 is further attached to the battery cover 22.
When mounting, the front edge of the battery cover 22 may be inserted between the bracket 14 and the member 2a of the chassis frame body 2, and the rear portion of the battery cover 22 may be fixed to the battery case 3 by the fixing pin 23. This allows the battery case 3 to be easily attached and detached without using a tool. In this way, all the electrical components are housed in the battery case 3 to form a battery case assembly, so that attachment / detachment to / from the chassis frame main body 2 can be easily performed by attaching / detaching the fastening member 15, depending on the user's request. Even if the chassis frame body 2 is modified, it can be performed regardless of the inside of the battery case 3.

[0031]

Since the present invention is constructed as described above, the following effects can be obtained. 1) Since all electrical components including harnesses are stored in the battery case, the appearance is neat and the appearance is good.

2) According to the above paragraph, it is not necessary to individually take measures for waterproofing, dustproofing, and preventing external contact of the electrical components as in the conventional case.

3) Even if the structure of the chassis frame is slightly changed according to the user's request, it can be attached to the chassis frame as a battery case assembly, so that no modification to the battery case structure is required. Therefore, it is possible to supply the battery case assembly alone.

4) Since the battery is isolated from the upper surface by the cover and the others as a battery chamber, dirt from above such as urine of passengers and spillage due to food and drink is protected, and in the case of battery dripping, it is on the floor. It is possible to prevent external leakage to the surface.

5) The chassis frame has a very simple structure because all the electrical components including the harnesses are housed in the battery case. Therefore, the number of components and the welding process can be reduced.

6) Since the battery charger is incorporated, it is not necessary to carry the battery charger separately as in the conventional case, and the space for storing the battery charger in the house is also unnecessary.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a vehicle body structure of an electric wheelchair according to the present invention.

FIG. 2 is an exploded perspective view showing a chassis frame, a battery case, and electrical components and the like housed in the battery case shown in FIG.

FIG. 3 is a side view showing the attachment of the chassis frame main body and the battery case of FIG.

4A is a cross-sectional view of the left half of the battery case of FIG. 3 viewed from the rear side, and FIG. 4B is an enlarged detailed view of a P portion of FIG.

5 is a plan view showing the arrangement of electrical components housed in the battery case with the battery cover of FIG. 3 removed.

FIG. 6 is a perspective view showing a state in which a battery cover is attached to FIG.

FIG. 7 is an exploded perspective view of a chassis frame of a conventional electric wheelchair and electrical components attached to the chassis frame.

8 is a plan view showing the assembled state of FIG. 7. FIG.

FIG. 9 is a perspective view of a non-vehicle-mounted charger used when charging a battery of a conventional electric wheelchair.

[Explanation of symbols]

 1 Electric Wheelchair 2 Chassis Frame Body 3 Battery Case 16 Battery 19 Battery Charger 20 Main Control Box 21 Harnesses 22 Battery Cover

Claims (3)

[Claims] 1. A battery case assembly in which a battery, a battery charger, a main control box, and harnesses are housed in a battery case arranged below a chassis frame body, and a battery cover is provided on an upper portion. Body structure of an electric wheelchair characterized by. 2. The battery case according to claim 1, wherein a battery is arranged at a central position of the battery case, a main control box is arranged at one of left and right positions, a battery charger is arranged at the other, and harnesses are arranged at a rear portion. Electric wheelchair body structure. 3. The vehicle body structure for an electric wheelchair according to claim 1, wherein the battery case is detachably attached to the chassis frame body.