JP2001231655A - Seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a seat cushion to a seat frame so as to be easily dismounted therefrom. SOLUTION: A locking hole 51 is formed at the front end of a seat part 21 of a seat frame 2. A locking part 52 is formed in a cushion frame 33 of a seat cushion 3. The forward end of the locking part 52 protruding from a cushion body 31 is engaged in the hole 51 so as to be disengaged, whereby the forward end of the cushion 3 is releasably engaged with the forward end of the seat part 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a seat suitable for use in various industrial machines such as vehicles, construction machines, agricultural machines, and the like.

[0002]

2. Description of the Related Art In general, a vehicle seat includes a seat frame and a seat cushion attached to the seat frame. The seat cushion is formed by hogling the peripheral portion or at four corners. Is attached to the seat frame by bolting.

[0003]

In the above-mentioned conventional seat, there are many places where a hog ring or bolts are provided, so that there is a problem that much labor is required to attach a seat cushion to a seat frame.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a seat having a seat frame and a seat cushion attached to the seat frame. It is characterized in that a locking mechanism for locking them detachably is provided between one ends. In this case, the locking mechanism is provided with a locking hole provided at one end of the seat frame,
It is preferable that the seat cushion has an engaging portion provided at one end of the seat cushion and removably engaged with the engaging hole. Further, inside the seat cushion, a cushion frame for shape preservation for maintaining its shape is provided, and a base end portion of the locking portion is connected to the cushion frame, and a cushion frame of the locking portion is provided. It is desirable that a front end protrudes outside from the seat cushion, and the protruding front end engages with the locking hole. In particular, it is desirable that the locking portion is provided integrally with the cushion frame. Further, it is desirable that the seat frame is formed by a blow molding method so that the inside of the seat frame is hollow.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side sectional view of a vehicle seat 1 according to the present invention.
Is provided with a seat frame 2, a seat cushion (seat cushion) 3, and a backrest cushion 4.

As shown in FIGS. 1 and 2, the seat frame 2 has a seat 21 and a backrest 22.
The whole is integrally formed. The seat frame 2 may be formed of metal or resin. In the case of forming with resin, it is desirable to form by a blow molding method. According to the blow molding method, since the cavity 23 is formed inside the seat frame 2, the entire seat frame 2 has a so-called double wall structure, and the weight reduction and the improvement of the strength can be achieved at the same time. It is. Seat 21
The backrest 22 and the backrest 22 may be formed separately and then integrated.

[0007] At the rear end of the seat 21 (the end on the side of the backrest 22), an upper wall and a lower wall are respectively provided with cavities 2.
The mounting part 24 is formed by making the inner side of the inside 3 concave and making contact with each other. The mounting portion 24 is formed with two bolt insertion holes 24a, 24a vertically penetrating the mounting portion 24 so as to be separated from each other in the left-right direction. Seat 21
A pair of locking holes 51, 51 constituting a locking mechanism 5 to be described later are formed in an upper wall portion at the front end portion.

The seat cushion 3 is shown in FIGS.
As shown in FIG. 5, a cushion body 31 formed by foaming a resin such as urethane, a skin 32 fixed over the upper surface and the peripheral surface of the cushion body 31, and a cushion frame 33 provided inside the cushion body 31 Have. The cushion frame 33 is made of a wire having a diameter of about several millimeters, and is annularly arranged along the peripheral edge of the cushion body 31 in order to maintain the shape of the cushion body 31. A horizontal mounting plate 34 is fixed to the rear end of the cushion frame 33 by welding or the like. The mounting plate 34 has a pair of through holes 34a,
34a are formed, and the respective through holes 34a, 34a
Nuts 35, 35 (only one of the nuts 35 is shown in FIG. 1) having the same axis as that of the nut 35 are fixed. Through hole 34a,
When the seat cushion 3 is placed at a predetermined mounting position of the seat portion 21, the axes of the nuts 34a and the nuts 35, 35 coincide with the axes of the insertion holes 24a, 24a. Then, as shown in FIG. 1, the bolt 61 that has penetrated the insertion hole 24 a and the through hole 34 a upward from below is screwed into the nut 35 and tightened. Installed.

The front end of the seat cushion 3 is provided with a locking mechanism 5.
Thus, it is locked to the front end of the seat 21. That is, as shown in FIG. 1, FIG. 3 and FIG. 5, a pair of locking portions 52, 52 separated from each other in the left-right direction are formed on the front end of the cushion frame 33 by appropriately bending the wire constituting the same. Are formed. Each locking part 52
Is composed of a base 52a extending obliquely downward and forward from the cushion frame 33, and a claw 52b projecting obliquely upward and forward from the base 52a so as to be orthogonal thereto. The distal end of the base 52a and the claw 52b protrude from the cushion body 31.

On the other hand, the front end of the seat 21 is shown in FIGS.
As shown in FIG. 6, a pair of locking holes 51, 51 penetrating the upper wall portion are formed separately from each other in the left-right direction. Each of the locking holes 51 includes a rectangular insertion hole 51a that is long in the horizontal direction, and a locking hole 51b that extends in the horizontal direction from a lower portion of one end of the insertion hole 51a in the longitudinal direction. The insertion hole portion 51a is provided with the claw portion 52 of the locking portion 52.
a is large enough to insert and remove a. Moreover, the distance between the insertion holes 51a, 51a is
It is the same as the interval of 2. Therefore, the insertion hole 5
Locking portions 52, 52 can be inserted into 1a, 51a. The width (width in the vertical direction) of the locking hole 51b is set to be substantially the same as the diameter of the wire forming the cushion frame 33, and the length (length in the left-right direction) is set to the locking portion 52.
Is set to be substantially the same as or slightly longer than the width in the left-right direction. The locking holes 51b, 51b are inserted into the insertion holes 51a,
51a are arranged on the same side. Accordingly, by moving the seat cushion 3 from the side of the insertion hole 51a to the side of the locking hole 51b in a state where the locking parts 52, 52 are inserted into the insertion holes 51a, 51a, the locking parts 52, 52 are moved.
52 can be moved so as to be inserted into the locking holes 51a.

Here, the locking portions 52, 52 are formed by the locking holes 51.
In the state inserted in b, 51b, the claw part 52b faces the upper wall part of the seat part 21, and this wall part is clamped by the cushion body 31. Thereby, the seat cushion 3
Is locked to the front end of the seat 21 in a detachable manner. When the base 52a is inserted into the locking hole 51b, the seat frame 3 is located at a predetermined mounting position of the seat frame 2.

As shown in FIGS. 1 and 2, a wood grain groove 25 is formed in the front surface of the backrest 22 in an annular shape. The peripheral edge of the backrest cushion 4 is press-fitted into the wood groove 25 and fixed by means such as bonding. The back cushion 4 includes a cushion body and an epidermis. In some cases, only the skin is used instead of the backrest cushion 4, and the skin is fixed to the groove 25.

When the seat cushion 3 is fixed to the seat portion 21 of the seat frame 2 in the seat 1 having the above-described structure, first, the locking portions 52, 52 are inserted into the insertion holes 51a, 51a of the locking holes 51, 51. Insert At this time, if the rear end portion of the seat frame 3 is slightly lifted up from the rear end portion of the seat portion 21, the locking portions 52, 52 are inserted into the insertion holes 51a, 51a.
Can be inserted easily. Next, the seat cushion 3 is moved in the horizontal direction, and the locking portions 52, 52 are inserted into the locking holes 51b, 51b. Then, the claw portion 52 b and the cushion body 31 sandwich the upper wall portion of the seat portion 21. Thus, the front end of the seat cushion 3 is locked to the front end of the seat 21. After that, the rear end of the seat cushion 3 is placed on the rear end of the seat 21 and fixed with the bolt 61.

When the seat cushion 3 is to be removed from the seat 21, the bolt 61 is loosened and removed, and then the rear end of the seat cushion 3 is slightly lifted from the rear end of the seat 21.
Next, the seat cushion 3 is moved in the horizontal direction opposite to the above, and the locking portion 52 is moved from the locking hole 51b to the insertion hole 51a. Thereafter, the seat cushion 3 is moved obliquely rearward and upward, and the locking portion 52 is pulled out from the insertion hole 51a.
Thus, the seat cushion 3 can be removed from the seat 21.

In the seat 1 of the present invention, the front end of the seat frame 3 is locked to the front end of the seat 21 of the seat frame 2 via the locking mechanism 5, and the front end of the seat cushion 3 is There is no need to hog or bolt. In addition, when both are locked, the locking portions 52, 52 are inserted into the insertion holes 51a, 51a of the locking holes 51, 51, and then the seat 3 is moved in the horizontal direction to thereby lock the locking holes 51, 51. It is only necessary to insert them into 51b, 51b, and they can be easily locked. Therefore,
The labor required for attaching the seat cushion 3 to the seat frame 2 can be greatly reduced. Of course, the seat cushion 3 can be easily removed.

The present invention is not limited to the above embodiment, but can be changed as appropriate. For example, in the above embodiment, the front end of the seat cushion 3 is locked to the front end of the seat 21, but the rear end of the seat cushion 3 can be disengaged from the rear end of the seat 21. And the front ends may be bolted together or hogled. Although the locking mechanism 5 is provided between the seat cushion 3 and the seat 21, a locking mechanism may be provided between one end of the backrest 22 and one end of the backrest cushion 4. A locking mechanism may be provided between the backrest cushion 4 and the backrest portion 22 and between the backrest cushion 4 and the backrest portion 22. When a locking mechanism is provided between the back cushion 4 and the back portion 22, the back cushion 6
May be constituted by a cushion body, a skin, and a cushion frame provided inside the cushion body, similarly to the seat cushion 3 described above. Further, the seat frame 2 is constituted by the seat portion 21 and the backrest portion 22,
Either the seat 21 or the backrest 22 may be a seat frame. In that case, seat cushion 3
Alternatively, the back cushion 4 serves as a seat cushion.

[0017]

As described above, according to the seat of the present invention, the effect that the seat cushion can be easily attached to and detached from the seat frame can be obtained.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a seat frame used in the embodiment.

FIG. 3 is a perspective view showing a cushion frame in a see-through state of a cushion body of a seat cushion used in the embodiment.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is an enlarged view of an A circle portion in FIG. 1;

FIG. 6 is a partially-omitted view of the arrow C in FIG. 5 showing a front end portion of the seat frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seat 2 Seat frame 3 Seat cushion (seat cushion) 5 Locking mechanism 21 Seat 22 Backrest 23 Cavity 33 Cushion frame 51 Locking hole 52 Locking part

Claims (5)

[Claims] 1. A seat provided with a seat frame and a seat cushion attached to the seat frame, wherein a locking mechanism is provided between one end portions of the seat frame and the seat cushion so as to engage and disengage them. A sheet characterized by being provided. 2. The locking mechanism according to claim 1, wherein said locking mechanism is provided at one end of said seat frame, and said locking mechanism is provided at one end of said seat cushion and is engaged with said locking hole in a detachable manner. The sheet according to claim 1, comprising: 3. A cushion frame for shape retention for maintaining the shape of the seat cushion is provided inside the seat cushion, and a base end of the locking portion is connected to the cushion frame, and 3. The seat according to claim 2, wherein a front end of the stop protrudes from the seat cushion to the outside, and the protruded front end engages with the locking hole. 4. The seat according to claim 3, wherein the locking portion is provided integrally with the cushion frame. 5. The seat according to claim 1, wherein the seat frame is formed by a blow molding method so that the inside of the seat frame is hollow.