JP2560160Y2 - Vehicle body cover opening and closing device for electric vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a body cover opening and closing device for an electric vehicle used by an elderly person or a physically handicapped person.

(Prior Art) Since the power source of an electric vehicle is a battery, an old battery must be replaced with a new one, and maintenance work such as replenishment of battery fluid must also be performed.

The replacement work and the maintenance work may have to be performed by an elderly person or a physically handicapped person. Therefore, when replacing the battery, technical consideration is required as a problem peculiar to an electric vehicle. In addition, in order to reduce the frequency of battery replacement and the frequency of battery fluid replenishment work, it is desirable to reduce the weight of the vehicle body as much as possible to extend the running distance of the battery.

As a conventional electric vehicle, for example, disclosed in Japanese Utility Model Publication No. 55-67723, a vehicle body cover is covered so as to cover a battery mounted on a frame, and a chair is detachably mounted on the vehicle body cover. It is placed. One end of the vehicle body cover is provided on the vehicle body frame via a hinge or the like so as to be openable and closable.

(Problem to be Solved by the Invention) In the above-mentioned conventional electric vehicle, when replacing and maintaining the battery, first lift the chair on the body cover and remove the chair from the body cover.
After opening the body cover, replacing or servicing the battery, after closing the body cover, the chair must be lifted again and placed on the body cover.

In this way, there is an operation of lifting, removing and placing the chair, and since the chair is complicated and difficult to lift in a well-balanced manner, battery replacement and maintenance for the elderly etc. is a difficult task. Problem. Also, when lifting the chair, the chair is dropped or injured unexpectedly, and since the chair is almost at the height of the chest, it is very difficult to lift it in a middle waist posture, sometimes it becomes tight There is a problem of doing.

In addition, in consideration of the elderly and the physically handicapped, the chair has a rotating mechanism to facilitate getting on and off the electric vehicle, and a sliding mechanism for adjusting the distance between the handle and the chair according to the body shape. Is provided on the chair, the weight of the chair is increased, and the lifting operation of the chair becomes more difficult.

In addition to such ease of battery replacement and maintenance, it is desired to reduce the weight of the vehicle body so as to extend the running distance of the battery and reduce the frequency of battery replacement and maintenance work. It is also desirable to increase the space in which the battery is mounted to improve the weight balance of the battery with respect to the entire vehicle body.

The present invention enables the opening and closing of the body cover without removing the chair and with a light force, further reduces the weight of the body and extends the running distance of the battery, reducing the frequency of battery replacement and maintenance work. In addition, the present invention provides a vehicle body cover opening and closing device for an electric vehicle in which a battery mounting space is widened to facilitate battery replacement and maintenance work and to improve the vehicle body weight balance.

(Means for Solving the Problems) A means according to the present invention for solving the above problems is to divide a cover for storing a battery or the like mounted on a lower portion of a seat into an under cover made of synthetic resin and an upper cover. Fixing a seat base on a seat under plate integrally attached to the upper cover, further mounting and fixing a seat thereon, and providing a gate-shaped front frame and a rear frame on a body frame; One end of the upper cover is rotatably connected to a bracket provided on the rear frame so as to protrude toward the seat, and the other end of the upper cover is rotatably connected to the rear of the seat underplate. The air damper is disposed between the main frame and the seat under plate, and the seat under The front part of the plate is supported by the portal-type front frame.

(Operation) The present invention is configured as described above, and has the following operation. In other words, the rear of the seat underplate, which fixes the seat and the seat, is supported by the main frame via the hinges and brackets, and the front is supported by the portal-type front frame. Since the weight of the seat and the weight of the driver were not placed on the undercover, the cover for storing the battery etc. mounted at the bottom of the seat was made of synthetic resin,
The weight can be reduced, and the battery mounting space can be widened.

Then, the above cover is divided into an under cover and an upper cover, and the seat base is fixed on a sheet under plate provided integrally with the upper cover, and further, the seat is placed and fixed thereon, and the rear frame is fixed to the rear frame. The upper cover is openable and closable with respect to the undercover via a hinge having one end rotatably connected to the provided bracket and the other end rotatably connected to the rear of the seat underplate. The slide mechanism and the seat can be integrated with the upper cover and can be moved with the opening and closing of the upper cover.

Also, since the bracket provided on the rear frame is provided so as to protrude toward the seat side, the connecting point of the hinge for rotatably connecting one end to this bracket can be freely determined by the protruding shape of the bracket. It can be set at an arbitrary position, and the distance between this connection point and the center of gravity including the weight of the seat base and the weight of the seat can be set to an optimum distance.

Since the upper cover is opened and closed via an air damper provided between the main frame and the seat under plate, the upper cover can be opened and closed with a small operating force by the action of the air damper.

(Example) One example of the present invention will be described below. First, an electric vehicle will be described with reference to FIG. 4. The vehicle cover 1 is divided into an under cover 2 and an upper cover 3, and a seat rotating slide mechanism 4 is fixed to the upper cover 3,
Further, a seat 5 is fixed on the seat rotation slide mechanism 4.

By providing the seat rotating slide mechanism 4 in this manner, getting on and off the electric vehicle can be facilitated, and the distance between the handle 6 and the seat 5 can be adjusted. It is designed to reduce it.

Next, the frame will be described with reference to FIG. 2. A rear frame 8 is attached to the main frame 7 so as to be inclined inward. It is provided inclining inside. Reference numeral 10 denotes a hinge mounting hole, and reference numeral 11 denotes a hinge stopper. Reference numeral 12 denotes a horizontal frame provided at the rear end of the main frame 7, and a damper bracket 13 is provided.
Are provided to extend upward in the inside of the main frame 7. 14 is a hole for mounting a damper. Reference numeral 15 denotes a front frame provided on the main frame 7 in a gate shape. Reference numeral 16 denotes a panel for mounting a battery 25 (see FIG. 1).

In FIG. 1, reference numeral 17 denotes a hinge, one end of which is connected to a hole 10 of a bracket 9 by a pin, and the other end of which is connected to a bracket 19 provided on a seat under plate 18 attached to the seat rotating slide mechanism 4. , Upper cover 3
Can be opened and closed with respect to the under cover 2. Reference numeral 20 denotes an air damper, one end of which is connected to the hole 14 of the bracket 13 and the other end of which is a seat under plate 18.
Is connected to a bracket 21 provided at Reference numeral 22 denotes a cushion bracket, and 23 denotes a cushion. As shown in FIG. 3, the cushion bracket 22 is formed in a U-shape, and the cushion 23 provided with the thread groove 24 is screwed into the cushion bracket 22 and abuts on the front frame 15. The height of the cushion 23 can be adjusted. This cushion 23 is the upper cover 3
And a function of adjusting a gap between the upper cover 3 and the under cover 2 to reduce a shock when the front cover 15 is closed to the front frame 15 side and to put a hand when the upper cover 3 is opened.

The connection hole 10 (P1) of the hinge 17 shown in FIG.
The connecting hole 14 (P2) is determined as follows. Sixth
In the figure, the center of gravity G of the upper cover 3 (including the seat rotating slide 4 and the seat 5), the force F for opening the upper cover 3
0, the closing force Fs and the relationship between the gas spring reaction force P of the air damper 20 and the friction force Fr are given by the following equations.

The balance of the force when the upper cover 3 is opened is F0 L3 + (P−Fr) L1 = WL2 (1) The balance of the force when the upper cover 3 is closed is Fs L3 + WL2 = (P + Fr) L1 (2) Here, W is the total weight applied to the center of gravity G, and L3 is the distance from P1 to the tip of the upper cover 3 (operating point P3). According to the above equations (1) and (2), the opening / closing force F0 of the upper cover 3
It can be seen that in order to reduce F3, L3 should be increased or L2 should be reduced. Since L1 and L2 change depending on the opening degree of the upper cover 3, the position of the branch P1 is determined by arbitrarily determining the shape of the bracket 9 and determining the balance between the force F0 for opening the upper cover 3 and the force Fs for closing the upper cover 3. .

An example of this is shown in FIG. 5, in which the opening force F0 for opening the upper cover 3 is opened with a light force of 3 kgf in the initial stage. Is opened by itself to an angle of 70 degrees (angle α in FIG. 1).

Next, when closing the upper cover 3, Fs
To 5 kgf, and the upper cover 3 can be closed by hand until the angle of the upper cover 3 becomes about 10 degrees. After that, the upper cover 3 can be closed by itself even if the hand is released.

Next, the operation of the present embodiment configured as described above will be described. First, in FIG. 1, when the battery 24 is to be replaced and maintained, for example, the user lifts the seat 5 in the direction in which he raises his hand on the front end (P3 in FIG. 6). Thus, the divided upper cover 3 is raised in the opening direction via the hinge 17. The opening force F0 at this time is set such that the distance L3 between the point P1 and the operation point P3 is sufficiently large, or the position of the connection hole 10 is determined by the shape of the bracket 9 so that the distance of the point P1 is shortened. A small force is obtained by determining the position.

Then, for example, when the opening degree of the upper cover 3 becomes 30 degrees, the air damper 20 allows the upper cover 3 to be fully opened to an angle α (for example, 70 degrees) by itself even after the hand is released. Next, the work of closing the upper cover 3 after the replacement or maintenance work of the battery 25 is performed by, for example, pressing the front end of the seat 5. Also at this time, by the function of the air damper 20,
The push is continued until the opening of the upper cover 3 becomes, for example, 10 degrees. Therefore, the pushing hand does not separate from the seat 5, so that the hand does not get caught between the upper cover 3 and the under cover 2. Then, even if you release your hand after pushing it down to 10 degrees, it will close on its own.
Also, the cushion 23 hits the front frame 15 and is closed quietly. The weight of the upper cover 3 during opening and closing and during operation is supported by the main frame 7 via the hinge 17. Particularly during driving, the hinge 17 is supported by the stopper 11 and the tip of the upper cover 3 is supported by the front frame 15 via the cushion 23, so that the weight of the driver and the seat 5, the upper cover 3, and the seat The entire weight of the rotary slide mechanism 4 is received by the main frame 7, and no load is applied to the under cover 2.
Therefore, the under cover 2 can be made of a light synthetic resin, and the upper cover 3 is reinforced by the seat under plate 18, so that the use of the synthetic resin is sufficient in strength and the body weight is reduced. It becomes possible to reduce.

The seat rotation slide mechanism 4 makes it easy to get on and off the vehicle, adjusts the distance between the steering wheel and the seat 5, and improves maneuverability.

(Effects of the Invention) As described in detail above, according to the present invention, the rear part of the seat underplate, which fixes the seat base and the seat, is supported by the main frame via hinges and brackets, and the front part is a gate-shaped part. The front frame supports the weight of the seat base, the weight of the seat and the driver's weight on the under cover, and the cover for storing the battery etc. mounted on the lower part of the seat is made of synthetic resin, Since the weight of the vehicle is reduced, the continuation distance of the battery can be extended, so that the frequency of battery replacement and maintenance work can be reduced, and the space for mounting the battery can be increased. Therefore, battery replacement and maintenance work can be easily performed, and the arrangement of the heavier battery can be arbitrarily selected. Therefore, the weight balance of the entire vehicle can be improved.

Then, the above cover is divided into an under cover and an upper cover, and the seat base is fixed on a sheet under plate provided integrally with the upper cover, and further, the seat is placed and fixed thereon, and the rear frame is fixed to the rear frame. A seat rotation slide mechanism, wherein the upper cover is openable and closable with respect to the undercover via a hinge having one end rotatably connected to the provided bracket and the other end rotatably connected to a rear portion of the seat underplate. Also, since the seat can be integrated with the upper cover and can be moved together with opening and closing of the upper cover, battery replacement and maintenance work can be performed without removing the seat.

Further, the bracket provided on the rear frame is provided so as to protrude to the seat side, and the connecting point of the hinge for rotatably connecting one end to the bracket is freely determined by freely determining the projecting shape of the bracket. Position, and the distance between this connection point and the center of gravity of the seat including the weight of the seat and the weight of the seat can be set to the optimum distance. Thus, battery replacement and maintenance work can be easily performed.

The upper cover is opened and closed via an air damper disposed between the main frame and the seat under plate in relation to the distance between the overall center of gravity and the connection point of the hinge. Since the upper cover can be opened and closed with a light operating force by the action of the damper, the replacement and maintenance of the battery can be further facilitated.

[Brief description of the drawings]

1 is a longitudinal sectional view of one embodiment of the present invention, FIG. 2 is a perspective view of a main frame, FIG. 3 is a perspective view of a seat under plate, FIG. 4 is a perspective view of an electric vehicle according to the present invention, Fifth
FIG. 6 is a diagram showing an example of the relationship between the opening / closing force of the upper cover and the angle, and FIG. 6 is a schematic diagram for deriving the relationship shown in FIG. DESCRIPTION OF SYMBOLS 1 ... Cover 2 ... Under cover 3 ... Upper cover 4 ... Seat rotation slide mechanism 5 ... Seat 7 ... Main frame 8 ... Rear frame 9 ... Bracket 17 ... Hinge 20 ... Air damper 21 Battery

Claims (1)

(57) [Scope of request for utility model registration] A cover for storing a battery and the like mounted on a lower portion of a seat is divided into an under cover made of synthetic resin and an upper cover, and the seat is placed on a seat under plate integrally attached to the upper cover. The base is fixed, and further, the seat is placed and fixed thereon. A gate-shaped front frame and a rear frame are provided on the body frame, and one end is turned on a bracket provided on the rear frame so as to protrude toward the seat. The upper cover can be opened and closed with respect to the under cover via a hinge movably connected and the other end pivotally connected to the rear portion of the seat under plate, and the air damper is connected to the main frame and the seat under plate. And a front portion of the seat underplate is supported by the gate-shaped front frame. Body cover opening and closing device for an electric vehicle.