JPH10286285A - Seat support structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly insert seat legs and to stably support a seat even though a load is exerted upon seating. SOLUTION: A pair of seat legs 7 are suspended from a seat 6. Meanwhile, leg supports 32 are arranged on a floor, corresponding to the seat legs 7. The leg supports 32 are formed in their bottom parts with support parts, 44, and accordingly, the seat legs 7 can be inserted therein with no gaps. Further, the top parts of the leg supports 32 are flared so as to serve as introduction parts 45A, but only the walls of one side part and a front side are upright straightforward from the support part 44 so as to serve as limiting surfaces 49 to resistant against a tendency of the seat legs 7 to be displaced by receiving a load due to seating.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat support structure.

[0002]

2. Description of the Related Art With the aging society approaching soon, various developments of electric vehicles are progressing. In many cases, such electric vehicles have a handle portion that can be laid down or a seat that can be removed for transportation or the like.

[0003] As shown in FIG.
A cylindrical leg support 60 is provided from the fixed surface side,
The seat leg 61 hanging from the seat is inserted here. At this time, the leg support 60 is dimensioned so that only a slight gap is provided between the leg support 60 and the seat leg 61 so that the seat can be supported in a stable state without play.

[0004]

However, in the conventional device, especially in the case where the seat legs 61 are provided with two legs on the left and right, instead of being inserted simultaneously, one side is inserted first, and the other is inserted later. To do this. Therefore, at the entrance of the leg support 60, it is desired to make the frontage dimension as large as possible. However, if the front end is widened in a trumpet shape along the entire circumference, the height dimension of the contact surface with the seat leg 61 becomes large. That is, when the seat leg 61 is displaced by the action of the seating load, it is difficult to restrict the movement. This is a concern when the height dimension of the entire leg support 60 is limited.

The present invention has been devised in view of the above-mentioned conventional problems, and has as its object to provide a seat capable of smoothly inserting a seat leg and stably supporting the seat. Is to provide a supporting structure.

[0006]

According to a first aspect of the present invention, there is provided a seat support structure detachably mounted on a fixed surface, wherein at least a pair of left and right seats are provided from the seat. While the leg is suspended, a leg support that allows the seat leg to be freely inserted and removed is provided upright on the fixed surface, and a support that can be inserted into the back of the leg support with the front end of the seat leg almost in close contact. A part is formed, and an extended insertion introduction part is formed from this to the upper opening side of the leg support, and further, a part of the insertion introduction part has a regulating wall that regulates displacement of the seat leg due to a seating load. It is characterized by being formed.

According to a second aspect of the present invention, in the first aspect, the insertion introduction portion is formed with a straight portion that expands with substantially the same width over a predetermined height range. It is.

[0008]

According to the first aspect of the present invention, when the seat is mounted on the fixed surface, the seat leg is inserted into the leg support. At this time, since the insertion introduction portion is formed to be expanded at the entrance side of the leg support, the seat leg can be smoothly inserted into the support portion from there even if there is a slight misalignment. Since the seat leg is supported by the supporting portion with almost no gap, the seat is supported in a stable state. In addition, when the load at the time of seating acts, the seat leg tries to displace,
The displacement is regulated by a regulating wall formed on a part of the insertion introduction portion.

According to the second aspect of the present invention, the insertion introduction portion is not expanded by the tapered surface, but is expanded by the straight portion having substantially the same width along the height direction. Therefore, since the seat leg can be guided to the support portion with the seat leg being inserted deeper, the insertion operation can be performed smoothly.

[0010]

FIG. 1 is a block diagram showing an embodiment of the present invention.
This will be described with reference to FIG. FIG. 1 shows the entire electric vehicle C of the present embodiment.
An electric three-wheeled vehicle having two rear wheels 14 will be described as an example.

Briefly explaining the outline, a steering post 1 is erected at the front of an electric vehicle C, and a handle 3, an accelerator lever 4, a power key switch 5 and the like with an operation panel 2 are provided at the upper end thereof. ing. A steering shaft (not shown) connected to the steering wheel 3 is vertically accommodated in the steering post 1 so that the front wheel 13 can be steered. On the other hand, a seat 6 is provided upright at the rear of the electric vehicle C, and is supported by two seat legs 7 which can be inserted and removed from the floor side. The seat leg 7 is formed by bending a metal pipe into a substantially U-shape, attaching this U-shaped portion along the lower surface of the seating surface, and further bending both ends thereof downward and hanging from the left and right ends. . A mounting piece 42 with an insertion hole for a wing bolt 43 protrudes at the same height position from the rear portion near the front end of both seat legs 7. This is seat leg 7
Is inserted into the leg support 32 and then the seat is fixed.

The front end of the seat leg 7 is chamfered 7A along the entire circumference, and a leg support 32 to be described later is provided.
It is designed to be easily plugged in.

A battery 8 or a power unit U for driving the rear wheel 14 as a driving wheel is disposed under the seat 6 so as to be covered.

The power unit U is mounted on the rear end of the vehicle body frame F, as will be described in detail later (see FIG. 5). As shown in FIG.
Is covered with a floor cowl 9 made of resin. In the center of the front part of the floor cowl 9, a cup 10 that opens downward is bulged upward, and a control unit housing 11 is formed in the center part of the cup 10, and controls the electric motor M in the inside. The control unit 12 is stored. At this time, the control unit 12
Is housed without protruding from the inside of the housing 11, and is further covered by a step plate 15 from above. The step board 15 constitutes a floor surface, and is reinforced in such a manner that it serves as a driver's footrest surface. Although not shown in detail, a lean hosement is attached to the upper surface of the control unit so as to be able to withstand tread pressure.

A harness 16 connected to the operation panel 2 or the like and routed through the steering post 1 between the cup 10 and the control unit housing 11 is further routed to the control unit 12. Routing groove 17 is formed. Further, a battery housing 19 is formed in the back of the control unit housing 11 with a partition wall 18 interposed therebetween.
As shown in FIG. 6, the position where the battery 8 is housed is
It is arranged in front of the power unit U and below the seat 6. The battery housing 19 is covered by a battery cover 20.

The floor cowl 9 is formed with a through hole 21 for the seat leg 7 so as to avoid interference with the battery cover 20.

Next, the body frame F will be described mainly with reference to FIGS. In FIG. 3, reference numeral 22 denotes a pair of left and right side members formed by a metal pipe, and is provided along the left and right side edges of the electric vehicle C. The front ends of the two side members 22 are bent inward so as to face each other, and a center portion is formed between the front ends and a cross member 23 formed of a metal pipe provided near the front end of the both side members 22. Are connected by a steering support bracket 24. The steering support bracket 24 has a lower end portion of a steering shaft rotatably penetrating therethrough, and a front end of the steering shaft which supports the front wheel 13 so as to rotate and steer. The entire steering support bracket 24 is covered by the cup 10 with the floor cowl 9 mounted.

A first reinforcing plate 25 is provided at the back of the cross member 23 and substantially at the center of the side members 22 in the front-rear direction. This first reinforcing plate 2
Reference numeral 5 is for reinforcing and protecting the control unit housing 11, but also has a function as a cross member. The first reinforcing plate 25 is formed by bending a metal plate material into a hook shape, and can be received from the bottom surface to the front surface of the outer surface of the control unit housing 11. And in this embodiment, many lightening holes are perforated for weight reduction. Further, both rear portions of the control unit housing 11 are supported by metal receiving plates 34 attached to both side members 22.

A second reinforcing plate 26 is located behind the first reinforcing plate 25 and between the rear ends of the two side members 22.
Has been erected. The second reinforcing plate 26 is connected to the battery 8
Is a heavy object, the battery housing 1
In order to reinforce the battery housing 9, the outer front portion of the battery housing 19 is received. The second reinforcing plate 26 is formed of a metal plate material, that is, an L-shaped angle material, and both ends are connected to ends of the side members 22 via mounting members 27 for mounting the power unit U. More specifically, a U-shaped mounting bracket 28 is fixed to the rear ends of both side members 22 by welding, and the end of the second reinforcing plate 26 is closer to the front side of the mounting bracket 28. Are bolted together with the mount member 27.

The power unit U is formed by integrating an electric motor M connected to the control unit 12, a differential gear case 29, and the like. As described above, a pair of mounting mount members 27 are provided on both sides in the front-rear direction of the vehicle. They are provided along the way. By connecting their front ends to the two mounting brackets 28, the power unit U is arranged at a position further extended to the rear of the side member 22. Since the units are bridged by the power unit U, the power unit U functions as a cross member.

However, in this embodiment, a third reinforcing plate 30 is provided between the two mount members 27. The third reinforcing plate 30 is formed of an L-shaped angle material so as to receive the rear portion of the battery housing 19,
The battery housing 1 together with the second reinforcing plate 26 described above.
It plays the role of nine reinforcements.

A shaft case 31 through which the axle of the rear wheel 14 is inserted is mounted on the outer surface of the mount member 27, and each of the shaft cases 31 is a differential gear case 29.
Are connected to the electric motor M, so that both rear wheels 14 can be driven. Furthermore,
Each of the mount members 27 is formed to have an L-shaped cross section, and a pair of leg supports 32 is provided in a vertical direction on the inner surface side and near the power unit U.

The two leg supports 32 can support the entire seat 6 by inserting and removably inserting the seat legs 7. This leg support 7 is made of a metal plate almost U-shaped.
The opening side of the mounting member 27 is
The space defined between the side wall surface and the side wall surface is welded by vertically contacting the side wall surface of the seat leg 7 and welding is performed. As a result, the upper end of the leg support 32 becomes the insertion port 33, and the bottom surface is the mount member 27.
And is adapted to receive the lower end surface of the seat leg 7. In addition, an enlarged portion 46 is formed at the opening edge of the insertion opening 33 so as to expand like a trumpet except for the side wall surface of the mount member 27.

The lower part of the leg support 32 is a support part 44, and the wall surface in this area is formed along a vertical line from the lower end over a predetermined height range. The inside thereof is set to a dimension for inserting the seat leg 7 with almost no gap (in this embodiment, 0.1 mm).
5 mm), and the height dimension is set to a height necessary for stable support of the seat 6.

An insertion introduction portion 45 for guiding the insertion of the seat leg 7 is continuous above the support portion 44. As shown in FIG. 8, the insertion introduction portion 45 has a portion (hereinafter, referred to as a side insertion introduction portion 45A) in which the inside facing portions of both leg supports are expanded in the left-right direction of the seat, and as shown in FIG. And a portion in which the rear portions of both leg supports are expanded (hereinafter referred to as a rear insertion introduction portion 45B), and these are both smoothly connected.

Further, the insertion introduction section 45 includes a support section 44.
Is straight through an inclined surface 47 projecting outward at an obliquely upward gradient, and a straight portion extending above the inclined surface 47 along a vertical line with a projection width of the inclined surface 47 and extending over a predetermined height range. A part 48 is formed so as to reach the insertion port 33. This straight part 48
In this embodiment, the setting is such that a sufficient gap (3.0 mm in this embodiment) is held in a state where the seat leg 7 is accommodated in the support portion 44.

Conversely, the side and rear insertion guides 45
A, 45B, the side wall surface of the mount member 27 becomes the side regulating wall surface 49 that continues from the support portion 44 in the vertical direction, and the rear insertion introduction portion. In the case of 45B, the front side surface of the leg support 32 is similarly a front regulating wall surface 50 that continues from the support portion in the vertical direction. The two regulating wall surfaces 49 and 50 are arranged so that there is almost no gap along the height direction with the seat leg 7 in a state where the seat leg 7 is inserted into the support portion 44, and when the load at the time of seating is applied. When the seat leg 7 shifts with it, it comes into contact with the seat leg 7 along the height direction, so that such a displacement operation can be restricted.

Further, on the upper edge of the side wall of the mount member 27 and behind the leg support 32, a nut 4
An overhanging piece 41 to which 0 is welded is provided inward. The overhanging piece is aligned with the mounting piece 42 with the seat leg 7 inserted so that the wing bolt 43 can be tightened.

Next, the operation and effect of this embodiment configured as described above will be specifically described. When it is necessary to remove the seat for transporting an electric vehicle or the like, first, the wing bolt 43
And loosen both seat legs 7 to leg support 3
2 can be extracted as it is.

On the other hand, when the detached seat is to be mounted again, both seat legs 7 are fitted to the leg supports 32 and pushed in. In this case, both seat legs 7 are simultaneously inserted into the leg supports 32. Is difficult, first, the seat leg 7 on one side is inserted into the corresponding leg support 32, and in this state, the other seat leg 7 is inserted into the leg support 32. At that time, as shown in FIG. 10, the vehicle enters the leg support 32 from an oblique side or obliquely rearward. In this direction, the entrance of the leg support is expanded by the insertion introduction portion 45. The initial insertion operation is performed smoothly. When the seat leg 7 is inserted further deeply, the seat leg 7 is corrected to an upright posture while passing through the straight portion 48 (see FIG. 11). At this time, even if there is misalignment with respect to the leg support 32, the tip of the seat leg 7 is guided to the support portion 44 along the inclination of the inclined surface 47. Thus, seat leg 7
Is inserted into the bottom surface of the support portion 44, the seat leg 7 is housed in the interior thereof in a substantially close contact state.
The entire seat 6 is stably supported without rattling (FIG. 12).
Status).

In the present embodiment, since the straight portion 48 is formed in the insertion introduction portion 45 so that the same dimension as the frontage of the insertion port 33 continues over a predetermined height range, the frontage dimension of the insertion port 33 is increased. Can be guided even in a deeper state compared to a case where the opening is formed by a tapered surface that makes the same. If the taper surface is such that the same degree of invitation can be provided, even if the insertion hole 33 is enlarged and covered with the floor cowl 9, a large relief is opened, so that the appearance is also impaired. In this regard, in the case of the present embodiment, the opening is not so large, and the appearance is not impaired.

Further, since the seat leg 7 is arranged at a position deviated to the rear side of the seat, when a downward load acts on the seat, the seat leg 7 tends to fall forward. Therefore,
Although a force in the direction of the arrow P as shown in FIG. 9 also acts on the seat leg 7, the seat leg 7 hits the front regulating wall surface 50 and hits over almost the entire height range of the leg support 32. The displacement of the leg 7 in the forward falling direction is reliably restricted. Further, the load at the time of seating is to be displaced in a direction to open the legs of both seat legs 7, but also in this case, the side regulating wall surface 49 hits the seat leg 7 over almost the entire height range,
The displacement in the opening direction is also regulated at the same time. Thus, since the entire seat maintains a stable posture even when seated, the reliability of seating is enhanced.

The present invention can be variously modified,
The following modifications are also included in the technical scope of the present invention.

In the present embodiment, the seat legs 7 are provided as a pair on the left and right sides, but may be provided with three or more legs.

Further, in the present embodiment, the seat of the electric vehicle is exemplified, but the present invention is not limited to this, and can be widely applied to places that can be detached from the fixed surface.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric vehicle.

FIG. 2 is a side view of the same.

FIG. 3 is a perspective view of a vehicle body frame.

FIG. 4 is a perspective view showing a power unit.

FIG. 5 is an exploded perspective view showing a floor structure.

FIG. 6 is a sectional view showing a floor structure.

FIG. 7 is an enlarged perspective view showing a leg support portion.

FIG. 8 is a sectional view of the seat leg as viewed from the front side.

FIG. 9 is a cross-sectional view of the insertion state of the seat leg as viewed from the side.

FIG. 10 is a cross-sectional view for explaining a state before the seat leg is inserted.

FIG. 11 is a cross-sectional view for explaining a state during insertion.

FIG. 12 is a cross-sectional view illustrating a state where the insertion is completed.

FIG. 13 is a sectional view showing a conventional insertion state.

[Explanation of symbols]

 6 ... Seat 7 ... Seat leg 32 ... Leg support 44 ... Support part 45 ... Insertion introduction part 45A ... Side insertion introduction part 45B ... Back insertion introduction part 48 ... Straight part 49 ... Side regulation wall 50 ... Front regulation wall

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Katsuhiko Kamiya, Inventor 25, Ueikeike, Yoshiwara-cho, Toyota City, Aichi Prefecture (72) Inventor Junichi Okuse 25, Ueikeike, Yoshihara-cho, Toyota City, Aichi Prefecture Araco Corporation

Claims (2)

[Claims] 1. A seat support structure detachably mounted on a fixed surface, wherein at least a pair of left and right seat legs are suspended from the seat, and a seat leg is detachably inserted into and removable from the fixed surface. At the same time as the support is erected, a support portion that can be inserted with the tip of the seat leg almost in close contact is formed at the back of this leg support, and it is expanded from here to the upper opening side of the leg support A seat support structure, wherein an insertion introduction portion is formed, and a regulating wall for regulating displacement of a seat leg due to a seating load is formed in a part of the insertion introduction portion. 2. A seat support structure according to claim 1, wherein said insertion introduction portion is formed with a straight portion which expands with substantially the same width over a predetermined height range.