JPS582667Y2 - vehicle seat - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a seat for a vehicle such as a bus.

In vehicles such as buses, the central aisle must be wide enough to allow passengers to get on and off the vehicle, so the width of the seats placed next to the left and right windows is necessarily limited. I have no choice but to be beaten.

Therefore, in a case where two seats are connected facing forward near one window, the width of the seats is quite narrow, and when passengers sit on each of the connected seats, their elbows touch each other, making it very uncomfortable.

In order to solve this problem, the center seat of the two connected seats is configured so that it can be slid to the side of the center aisle within a certain range, and when the passenger finishes riding, the center seat can be slid toward the center. A system has been developed in which the distance between the seats is widened, but the mechanism for sliding the seats is complicated and expensive, and the sliding operation is difficult to operate smoothly.

Therefore, a method of moving the seat using a link mechanism instead of a sliding type may be considered, but in the case of a link type, it is necessary to reduce the weight so that it can be operated easily.
The rotating part of the link tends to wear out and cause looseness.

There are many problems that need to be solved, such as the tendency for backlash to occur due to dimensional errors in each sheet.

The present invention provides a link-type moving mechanism for a seat that can solve the above-mentioned problems, and will be described below with reference to the accompanying drawings.

In Figures 1 and 2, 1 is a seat on the window side, 2 is a seat on the center aisle side, and the window seat 1 is fixed to the vehicle body with support legs 3, etc., and the center aisle seat 2 is attached to the support leg 4 and the frame 1a of the window seat 1. Front and rear fixed horizontal frames 5 fixed to the vehicle body side by etc.
a, 5b via front and rear links 9, 9, which will be described later.

That is, at least two shafts 6, 6 are installed in the front and back direction between the front and rear fixed horizontal frames 5a, 5b, and the fixed horizontal frames 5a,
At least two shafts 8, 8 are installed between the front and rear horizontal frames 7a, 7b of the seat 2 corresponding to the fixed horizontal frame 5b, and the shaft 6.6 on the fixed horizontal frame side and the shaft on the seat side. Between 8 and 8, front and rear links 9 and 9 are rotatably attached at the front and rear ends, respectively, and the shaft 6 on the fixed horizontal frame side and the shaft 8 on the seat side are attached to the links at the front and rear respectively. They are connected at 9,9.

The seat 2 is then moved laterally from its normal position adjacent to the window seat 1, as shown by the solid line in FIG. I'm starting to get it.

Although not shown in the drawings, it is a matter of course that a support member is provided to support the seat 2 in the normal position and the use position, and the circumferential position of the seat 2 is locked to the support member. A locking mechanism or the like is also provided as necessary.

The front and rear links 9, 9 are both divided into two parts as shown in Fig. 4, and the shafts 6 and 8 are held between the two link pieces 9a and 9b, and then tightened with bolts 10. When installed, there is a specified gap C between both link pieces 9a + 9b.
The shaft holding grooves 9a'9b' are formed in a circular arc with a cross section slightly shallower than a semicircle so that the shafts 6 and 8 can be held by the bolts 10 with appropriate friction.

Also, a distance adjusting member 11 such as a distance bolt is interposed between the front and rear links 9, 9, so that the front and rear links 9, 9 accurately abut the front and rear horizontal frames 5a, 7a and 5b, 7b, respectively, and the seat 2 prevents it from shifting in the front-back direction.

As described above, according to the present invention, the number of links connecting the shaft 6 fixed on the vehicle body side and the shaft 8 on the seat 2 side is two, front and rear, and each of the front and rear links is divided into two, so that the shafts 6 and 8 are separated. It is configured to be held from both sides, and is lightweight, extremely easy to install and remove, and can easily absorb one dimensional error.

Furthermore, when the shaft is held by two links, there is a gap between the split surfaces, so it is possible to create an appropriate amount of friction between the shaft and the link, making it easier to move the sheet 2. This can prevent backlash from occurring.

Furthermore, since the front and rear links are pushed apart by the distance adjustment member 11 such as a distance bolt, the gap error between the front and rear horizontal frames can be sufficiently absorbed, and in this respect, no backlash occurs at all.

When a link-type seat movement mechanism is to be adopted, the link is generally a cylindrical bearing on both ends of a thick plate a that extends between the front and rear horizontal frames as shown in Figure 6, and is welded to b. However, with such a link, play is likely to occur between the bearing b and the shafts 6 and 8, and the length of the link in the longitudinal direction and the distance between the front and rear horizontal frames are large. They do not match easily, and backlash in the seat inevitably occurs.

Furthermore, when assembling the shaft, one of the shafts must have an insertion structure as shown in FIG. 6, which causes various problems such as the extremely troublesome installation work.

In the present invention, since the installation can be carried out with both shafts 6 and 8 completely fixed, both shafts can be fixed to the horizontal frame by welding or the like in advance, which increases the strength. All of the problems shown in Figure 6 can be resolved and are extremely effective.

[Brief explanation of the drawing]

1 to 5 are views showing an embodiment of the present invention, in which FIG. 1 is a rear view, FIG. 2 is a side view, FIG. 3 is an enlarged detailed view of the link mechanism shown in FIG. 2, and FIG. The figure is a sectional view taken along the line XX in FIG. 3, and FIG. 5 is a perspective view of the link piece. FIG. 6B shows a side view and a YY sectional view of a link mechanism to be compared with the link mechanism of the present invention. 1...Window seat, 2...Central aisle seat, 3.4...Support leg, 5a, sb.
... Fixed horizontal frame, 6゜8 ... Axis, 7a, 7
b...Horizontal frame of the sheet, 9...Link,
9a, 9b...Link piece, 9 a', 9 b
'...Shaft holding groove, 10...Bolt, 11
...... Spacing adjustment member.

Claims (1)

[Scope of utility model registration request] In a vehicle seat where a window seat and a center aisle seat are connected, a shaft fixed in the longitudinal direction between the front and rear fixed horizontal frames fixed to the vehicle body and between the front and rear horizontal frames of the center aisle seat By connecting the shafts fixed in the front and back directions with links at the front and rear ends of the seat, the seat on the center aisle side can be moved from its normal position connected to the window seat to a use position protruding toward the center aisle. , a vehicle characterized in that the link is divided into two and held by sandwiching the shaft, and the front and rear links are pushed apart in the front and back direction using a distance adjusting member such as a distance bolt. Sheet for use.