JPH0872772A - Structure for seating detection section of small sized motor car - Google Patents

Abstract

PURPOSE: To provide structure for the seating detection section of a small sized motor car, which does not unreasonably damage wire harness. CONSTITUTION: The seat frames 9 and 10 provided in the lower section of a seat 6 are fitted to the pipe frame 13 erectedly provided in a car body frame 5 so as to be vertically movable and rotatable around the shaft center, and vertically displacing members 20 and 21, which are vertically displaceable according to the presence or absence of an occupant on the seat 6 are extended downward from the lower section of the seat 6, and a switching means 23, which is switched when the vertically displacing members 20 and 21 is displaced downward, is arranged in the lower section of the pipe frame 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seating detecting portion structure of a small scooter type electric vehicle which can be operated by an elderly person or a physically handicapped person.

[0002]

2. Description of the Related Art Conventionally, in this kind of small electric vehicle,
A shaft member extending downward from a seat frame provided below the seat to support the control seat is fitted to a pipe frame erected on the body frame so as to be rotatable about the vertical axis, and It is well known that a normal posture for facing the front for maneuvering and a sideways posture for allowing the operator to easily get on and off can be set. Further, when a person is not seated in the control seat, a load detection sensor for detecting whether or not the control seat is seated is provided in the seat so that the driver does not start unfairly even if the accelerator lever is operated. It has been known.

[0003]

However, in the above-described conventional structure, the control seat is pivotable about the vertical axis so that the operator's seat can be switched from the front facing state to the side facing side so that the passenger can easily get in and out. Since it is configured to be possible, in the electrical wiring connecting the load detection sensor and the control device of the aircraft, it has to be configured so that the connection state is maintained even if the attitude of the control seat is changed, Therefore, for example, the electric wiring is drawn out in a coil shape between the pipe frame and the seat. Since the electric wiring is drawn out to the outside in this manner, there is a risk that the electric wiring may be caught or damaged by another object when the seat posture is changed when getting on or off the vehicle. The present invention has been made in view of the above circumstances, and an object thereof is to provide a seating detector structure for a small electric vehicle that does not unduly damage the electrical wiring used for seating detection or boarding detection on the vehicle body. And

[0004]

In order to achieve the above-mentioned object, a seating detection portion structure for a small electric vehicle according to the present invention is provided with a seat frame provided below a seat with respect to a pipe frame erected on a vehicle body frame. And a vertically displacing member that is vertically movable depending on whether or not a seat is seated, extends downward from the lower portion of the seat, and vertically displaces the vertically displacing member. It is characterized by arranging a switching means for switching operation under the pipe frame below the pipe frame. Further, in the above characteristic configuration, the switching means may be configured to perform a switching operation by the displacement of the vertical displacement member only when the seat is in a frontal posture. As a second aspect of the present invention, a suspension mechanism that elastically supports the wheels relative to the vehicle body frame is provided, and the relative vertical distance between the vehicle body frame and the wheels is shortened when the operator boards the vehicle. The present invention is characterized in that detection means is provided which is capable of detecting two states, a state and a state in which the operator has extended without boarding. The operation and effect of this characteristic configuration are as follows.

[0005]

In other words, the vertically displacing member that is displaced downward by the operator's seat allows the switching means located at the lower part of the pipe frame to perform a switching operation to detect the operator's seat. Even if the seat is rotated around the vertical axis, the switching means itself for detecting seating does not change its position. Further, the switching means is configured to perform switching operation by the displacement of the vertical displacement member only when the seat is facing the front, so that the seat is seated regardless of whether the seat is facing when the seat is facing away from the front. If it is not detected, the vehicle can be disabled based on the detection result. In addition, the distance between the vehicle body frame and the wheels, which can be relatively displaced in the vertical direction by the suspension mechanism, changes depending on whether or not the operator is riding on the vehicle body. It is possible to detect whether or not the operator has boarded the vehicle body by the detection means for detecting

[0006]

As described above, according to the first and second aspects of the present invention, the presence / absence of seating on the seat or the presence / absence of an operator on the vehicle body is detected by the load detection sensor provided on the seat. Instead, it is performed by switching means provided at the lower portion of the pipe frame supporting the seat and means for detecting the relative vertical distance between the vehicle body frame and the wheels. Therefore, the detecting means is provided regardless of the rotation of the seat about the vertical axis. The electrical wiring for signal transmission will be maintained fixedly installed, and the electrical wiring for signal transmission will not be exposed to the outside and will not be caught by other objects. The wiring is no longer damaged. In addition, by making it possible to detect the presence or absence of a seat only when the seat is facing the front, it is possible to prevent unfair running even if the seat is not facing the front, and it is safe It is possible to improve the quality.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 shows a small electric vehicle. This small electric vehicle includes one front wheel steered by a steering wheel 1 and a pair of left and right rear wheels 4, 4 driven by an electric motor 3.
The vehicle body frame 5 is supported by and and the vehicle body frame 5 is equipped with a control seat 6, a battery 7, a control device 8 and the like.

As shown in FIGS. 1 and 2, a support shaft 10 extends downward at the center of a seat frame 9 mounted and fixed to the lower surface of a seat 6A of a control seat 6, and the support shaft 10 is provided.
The seat supporting column 11 from above, and the seat frame 9 is placed on the flange-shaped seat support 12 provided at the upper end of the seat supporting column 11 to mount the control seat 6 on the support shaft 10. It is rotatably supported around a vertical axis P that forms a central axis. The seat supporting column 11 is inserted into and supported by a pipe frame 13 standing on the vehicle body frame 5 from above, and the seat supporting column 11 is fixed to the pipe frame 13 using a set bolt 14. . Then, the lock piece 16 of the lock lever 15 pivotally supported on the seat frame 9 is engaged and disengaged with respect to the engaging recesses 17 formed by cutting out at the front end and the left and right side ends of the seat support 12, whereby the control seat 6 is moved. , Front posture,
Alternatively, in order to take a posture facing either left or right, it is possible to rotate around the vertical axis P to fix or release the fixation.

Further, as shown in FIG. 1, the base plate portion 18 of the seat 6A has a leaf spring member for elastically biasing the seat 6A upward with respect to the seat frame 9 to provide a cushion function. 19 is provided, a bar-shaped member 20 as a vertically displacing member is extended downward from the base plate portion 18 of the seating seat 6A, and is inserted into the support shaft 10 made of a pipe member and the seat support column 11,
The lower end of the pipe frame 13 reaches the lower part of the pipe frame 13. Then, a plate member 21 as a vertically displacing member is connected to a lower end portion of the rod-shaped member 20, and
A compression spring 22 installed in the pipe frame 13 elastically biases the plate member 21 upward. At the lower end portion of the pipe frame 13, a switching operation portion 23a, which is biased toward the lower side of a limit switch 23 disposed on the front side of the pipe frame 13 toward the lower side, faces the inside of the pipe frame 13. .

The switching operation portion 23a is pushed upward by the plate member 21 which is elastically biased upward so that the switching operation portion 23a is turned off when the operator is not seated on the control seat 6. Further, when the operator sits on the control seat 6, the board portion 18 is lowered against the leaf spring member 19 and the compression spring 22, and the rod-shaped member 20 and the plate material 21 are lowered in conjunction with this, so that switching is performed. It is set so that the operation portion 23a is returned and displaced downward and the limit switch 23 is turned on.

The limit switch 23 is connected to the control device 8, and the control device 8 controls the accelerator lever 2 provided on the steering handle 1 when the limit switch 23 is in an off state, that is, when the seat is not seated.
4 is configured so that the electric motor 3 is not driven even when the accelerator is operated, and when the limit switch 23 is seated and the limit switch 23 is in the ON state, the electric motor 3 is driven according to the operation of the accelerator lever 24. It is configured to be done.

Therefore, with the above structure, the limit switch 23 detects whether or not the operator is seated on the control seat 6 as the vertical displacement of the plate member 21 and thus the rod member 20,
Based on the detection, the vehicle is prevented from traveling when the vehicle is not seated, and conversely, when the vehicle is seated, the vehicle can travel at a vehicle speed corresponding to the operation of the accelerator lever 24. It should be noted that braking may be performed when the user is not seated.

[Other Embodiments] As shown in FIGS. 4A and 4B, the function can be further enhanced by deforming the plate member 21 which rotates integrally with the control seat 6. That is, when the operator's seat 6 is not seated and the operator's seat 6 is facing the front, the switching operation part 23a of the limit switch 23 is configured to be switchable by the plate member 21 so that the operator's seat 6 faces left and right laterally. When the posture is changed as described above, the sheet material 21 integrated through the seating seat 6A and the board portion 18 and the rod-shaped member 20 cannot be switched to the off state with respect to the switching operation portion 23a of the limit switch 23. The switching operation unit 23a
The cam portion 21 is positioned higher than the position where the
a is raised. With this configuration, the limit switch 23 can detect whether or not the operator is seated when the control seat 6 is facing the front, but when the control seat 6 is facing sideways, the plate member 21 is in the seated state. Even when is displaced downward, the switching operation portion 23a of the limit switch 23 is pressed by the cam portion 21a of the plate member 21 and the accelerator cannot be operated. Therefore, the accelerator operation can be performed only when the operator's seat 6 is facing forward and seated, and when the operator's seat 6 is switched to the sideways lateral direction, Even if you sit down, you cannot operate the accelerator.

[Other Embodiments] A transmission case 25, in which a rear wheel 4, 4, an electric motor 3, and a transmission mechanism for interlocking the two are installed, is shaken with respect to the body frame 5 as shown in FIG. A rear end portion 5A of the vehicle body frame 5 which is pivotally mounted about the horizontal axis X through the moving frame 26 so as to be vertically swingable and is located above the rear wheels 4 and 4, and the swing frame 26. Left and right suspension mechanism 2
It is elastically supported via 7 so that the vertical position can be changed.
That is, the suspension mechanism 27 includes the body frame 5
Brackets 28 and 29 are provided on the rear end portion 5A and the swing frame 26, respectively, and the bracket 29
The shaft member 30 held by the crocodile is vertically movably inserted into the through hole of the bracket 28, and the compression coil spring 31 in a state of surrounding the shaft member 30 is attached to both brackets 2
It is arranged between 8 and 29. Further, a limit switch 32 as a detection means is arranged at the rear end portion 5A of the vehicle body frame 5 so that the position of the upper end portion of the shaft member 30 on the left and right sides can be detected. That is, when the operator gets on the small electric vehicle, the rear wheels 4 and 4 relatively serve as wheels.
4 and the rear end portion 5A of the vehicle body frame 5 become smaller than when not riding, and the amount of protrusion of the shaft member 30 from the bracket 28 to the upper side is large, and the upper end of the shaft member 30 is increased. The limit switch 32 is switched from the off state to the on state by the section. The limit switch 32 is connected to the control device 8 as in the above-described embodiment, and the control device 8 controls the limit switch 32 when the limit switch 32 is in the OFF state, that is, when the passenger is not on board.
The accelerator lever 24 provided on the steering handle 1 is configured so that the electric motor 3 is not driven even when the accelerator is operated, and the accelerator lever 24 is operated when the limit switch 32 is in an on state after boarding. The electric motor 3 is driven according to the above.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a seat and its supporting structure, and an explanatory view showing a seating detection means and the like.

FIG. 2 is a plan view showing a seat.

FIG. 3 is an overall side view showing a small electric vehicle

FIG. 4 (a) is a partially cutaway side view of a seat and its support structure of another embodiment and an explanatory view showing a seating detecting means, etc. (b) A cross-sectional plan view of the seating detecting means.

FIG. 5 is an explanatory view showing a means for detecting the boarding of an operator using the suspension of the second invention.

[Explanation of symbols]

 4 Wheels 5 Body Frame 6 Seats 9 and 10 Seat Frame 13 Pipe Frames 20 and 21 Vertical Displacement Member 23 Switching Means 27 Suspension Mechanism 32 Detecting Means

Claims (3)

[Claims] 1. A seat frame (9), (10) provided at a lower portion of a seat (6) with respect to a pipe frame (13) erected on a vehicle body frame (5) is rotated about a vertical axis. Vertically displacing members (20) and (21) which are freely fitted and whose vertical positions can be freely changed depending on whether or not they are seated are extended downward from the lower part of the seat (6), and the vertical displacing members (20), (21), 21) A seating detection portion structure for a small electric vehicle in which a switching means (23) which is operated by a downward displacement of (21) is arranged below the pipe frame (13). 2. The switching means (23) is configured to perform switching operation by displacement of the vertical displacement members (20), (21) only when the seat (6) is in a frontal posture. The seating detector structure of the small electric vehicle according to claim 1. 3. Wheels (4) with respect to the body frame (5)
A suspension mechanism (27) that elastically relatively displaceably supports the vehicle is provided, and the relative vertical distance between the vehicle body frame (5) and the wheels (4) is shortened by the ride of the operator. , A seating detection structure of a small electric vehicle provided with a detection means (32) capable of detecting two states, that is, a state in which the operator is extended without boarding.