JPH042635Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a seat comprising a plurality of zigzag springs installed on a frame, a cushion material placed thereon, and covered with a trim cover forming the surface layer.

``Prior Art'' Various techniques are used to lock the terminals of trim covers that wrap the cushion material inside the seat and form the surface of the seat in seats used in vehicles. -There is one disclosed in Publication No. 115998.

In the technique proposed in the above-mentioned publication, the end of the trim cover that forms the exterior of the seat is fixed to the frame of the seat with a clip.

``Problems that the invention aims to solve'' However, the work of clipping the many locking points one by one is time-consuming, complicated, and costly, and in order to lock the trim cover without sagging, it is necessary to There was a problem in that the clip had to be kept under tension during the clipping process, resulting in poor workability.

In addition, in use, since the end of the trim cover is fixed to the seat frame, which is an immovable body, when the seat seat sinks deeply after sitting on the seat, the cushion material wrapped inside the seat is sufficiently deformed. There was a problem in that the trim cover could not be followed and the trim cover became sagging.

The present invention has been devised in view of these conventional problems, and aims to provide a seat that is easy to assemble and whose trim cover is less likely to sag.

``Means for Solving Problems'' The gist of the present invention to achieve this purpose is to install a plurality of zigzag springs on a frame, place cushioning material on top of the zigzag springs, and create a trim cover that forms the surface layer. The covered seat is characterized in that a plurality of cut grooves are provided along the edge line of the end of the trim cover, and the cut grooves are hooked onto the bent portion of the zigzag spring to lock the end. It is located in the seat where you will be seated.

``Function'' When assembling the seat, cover the trim cover with the following steps:
Wrap the cushion material inside and strongly pull the end of the trim cover to be locked along the flat surface of the zigzag spring to be locked.

When the bent portion of the spring looks through the cut groove provided along the edge line of the end of the trim cover, when the end portion is pushed down or pulled up as a whole, the bent portion of the spring crosses the cut groove. Because I look outside,
If the tension is gently released while maintaining this state, the bent portion of the spring will appear across the entire kerf, and the locking will be completed.

To release the above-mentioned lock when replacing the trim cover, etc., the lock can be easily released by pulling up or pushing down the end of the trim cover.

When the user sits on the seat, the locking end of the trim cover is pulled toward the tension side along with the deflection of the locked zigzag spring, and the slack is absorbed.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 to 8 show an embodiment of the present invention.

The seat 10 consists of a seat 11 and a backrest 12, as shown in FIG. A zigzag spring such as formed wire 13F is stretched across the frame 16 for cushioning to form a basic model.

A cushion material 15 such as one or more layers of seat felt or urethane foam is placed on these zigzag springs, and covered by a trim cover 14 that covers the cushion material 15 and the frame 16.

The trim cover 14 is a protective film that covers the cushion material 15, and at the same time provides a feel and aesthetic appearance to the user.

As shown in FIG. 1, the seat portion 11 of the seat is seen from below, and in this example, an S spring 13S shown in FIG. 4 is used as a zigzag spring for the cushion. Of course, the zigzag spring for the cushion may be a bent spring 13F, which is a formed wire, as shown in FIG.

Trim cover 1 enclosing cushion material 15
Three sides of 4 are locked to the frame, and the remaining end 14a is locked to the S spring 13S.

As can be seen in FIGS. 1, 2, 6, and 7, the end 14a of the trim cover 14 to be locked is provided with a plurality of grooves 14b.
4b passes through the bent portion 13a of the S spring 13S and is locked to the base portion 13b.

Next, the effect will be explained.

The trim cover 14 is assembled in the following manner.

8a to 8d sequentially show the procedure for locking the terminal 14a of the trim cover 14 to the S spring 13S. First, as shown in FIG.
4a on the flat part of the S spring 13S. In this case, the terminal 14a may be placed above the S spring 13S in FIG. 1 or placed on the opposite side depending on the convenience of the work. In Fig. 8a, S spring 1
3S is regarded as the lower side.

Next, as shown in FIG. 8b, the end 14a is pulled to the right as shown by the arrow A until the cut groove 14b formed parallel to the edge line 14c faces the bent portion 13a of the S spring 13S. . This direction is also shown as arrow A in FIG. 1, and it makes the trim cover 14 tense as a whole, and the trim cover 14 stores a restoring force to return to its original state.

Next, the S spring 13S seen through the cut groove 14b
The bent portion 13a is passed through the cut groove 14b.

Then, if you gently loosen your hand from the state shown in Figure 8c, the trim cover 1 will appear as described above.
Due to the restoring force stored in the trim cover 4, the trim cover 14 retracts in the direction of the arrow B, and the kerf 14b engages with the base 13b of the S spring 13S and stops. In this way, the locking of the trim cover 14 is completed.

When removing the trim cover 14 for reasons such as replacing the trim cover 14, cushion material 15, etc., first pull the terminal 14a strongly in the direction opposite to the arrow B in the state shown in FIG.
When the state shown in Fig. 8c is reached, from the kerf 14b to the S
If the bent portion 13a of the spring 13S is removed and the hand is released, the lock will be released.

Next, the operation during use will be explained based on FIGS. 6 and 7.

Figure 6 shows the seat part 11 of the seat when not seated.
The cushion material 15 is fully inflated, and the trim cover 14 is fully taut.

When a person sits on the seat in the state shown in FIG. 6, the cushion material 15 is naturally compressed and deformed, causing a decrease in volume. The compression amount becomes the deflection of the S spring 13S and the seat 1
0 cushioning action is performed.

As shown in FIG. 7, the end 14a of the trim cover 14 is pulled by the deflection of the S spring 13S, so that the trim cover 14 does not become sagging. Therefore, there is no risk that the front part of the trim cover 14 will sag and interfere with the seat slide or the like.

"Effects of the invention" According to the seat according to the invention, the trim cover assembly work can be accomplished almost in one movement.
The number of man-hours can be significantly reduced compared to the conventional method in which each seat is clipped one by one, and the cost of parts such as clips can be saved, resulting in an inexpensive seat.

Furthermore, since the trim cover does not sag, there is no risk of it interfering with nearby parts, improving seating comfort.

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention. Figure 1 is a perspective view of the seat of the seat seen from the back, Figure 2 is an enlarged plan view of the end of the trim cover, and Figure 3 is a perspective view of the seat. Figure 4 is a perspective view of the main parts of the S spring, Figure 5 is a perspective view of the main parts of the formed wire, Figure 6 is a cross-sectional view taken along the - line in Figure 2, and Figure 7 is when seated in Figure 6. An explanatory diagram showing the state of FIG.
d is an explanatory diagram of the function of trim cover locking. 10...Seat, 13S...S spring (zigzag spring), 13a...Bending portion, 14...Trim cover,
14a... terminal, 14b... kerf, 14c... edge line, 15... cushion material, 16... frame.

Claims (1)

[Scope of Claim for Utility Model Registration] In a seat consisting of a frame with a plurality of zigzag springs on which a cushion material is placed and covered with a trim cover that forms the surface layer, along the edge line of the end of the trim cover. 1. A seat characterized in that a plurality of kerfs are provided, and the kerfs are hooked onto a bent portion of a zigzag spring to lock the end.