JPH056826Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to seat cushion springs for automobiles and the like.

<Prior art> As shown in FIG. 4, a seat cushion spring for an automobile, etc. has a front closing mouth 1a at the front end of the seat and a rear closing mouth 1 at the rear end.
a zigzag spring 2 formed with b;
The zigzag spring 2 is composed of a coil spring 3 interposed approximately at the center thereof. (For example, see Japanese Utility Model Application Publication No. 61-51055.) <Problem to be solved by the invention> In the case of the above-mentioned conventional seat cushion spring, the front end of the zigzag spring 2 is supported by the front fish mouth 1a. The front end A of the seat tends to become hard, giving a feeling of a foreign body, and the thigh support part B of the seat, on the other hand, is soft, and as shown in Fig. 5, the area indicated by arrow C tends to fall down. I'm making up for it. Therefore,
The number of component parts of the coil spring 3 and the number of man-hours for assembling the coil spring 3 are required.

Furthermore, if the front end A of the seat is hard, especially in the case of the driver's seat, when the accelerator, brake, or clutch pedal is depressed, the driver will feel a local contact with the thigh, causing discomfort.

<Means for solving the problem> The present invention provides a seat cushion spring that has improved the above-mentioned problems.
The characteristic structure is that the seat cushion spring is made up of a plurality of zigzag springs, which are formed by a front spring and a rear spring on the front side and the rear side of the seat of the fish mouse. The front ends of the zigzag springs are connected at a rear position at a required distance from the front ends of the springs, and the front ends of the zigzag springs are overhanging the front side of the frame. It is connected to a line.

<Function> With the above structure, the front end of the seat maintains its flexibility with the overhang of the zigzag spring in front of the front spring, and the thigh support part maintains its flexibility with the front spring (front fitting mouth). It is moderately hard and prevents falling without the need for supplementing with coil springs.

<Examples> Examples of the present invention will be described below based on the drawings. In FIG. 1, 10a is a front spring forming a front fish mouth, 10b is a rear spring forming a rear fish mouth, and 11 is a plurality of S-shaped zigzag springs.

As shown in FIG. 2, the present invention connects the upper end of the front spring 10a to a rear position a required distance D from the front end of the zigzag spring 11 with a caulking clip 12, and connects the front end of the zigzag spring 11 to the front end of the zigzag spring 11. A zigzag spring 11a is formed overhanging the connection point of the spring 10a.

Furthermore, the overhanging zigzag spring 11a is connected to the rectangular frame line 13 with a caulking clip 14 with the connection point of the front spring 10a located inside the frame.

Since the present invention has the above-described structure, the overhanging zigzag spring 11a in front of the connection point of the upper end of the front spring 10a is in a free state and easily deflected using the front fishing mouth of the front spring 10a as a fulcrum. The front end A of the seat is therefore soft.

Further, since the front foot support portion B of the seat portion is positioned with the front foot due to the front spring 10a, appropriate hardness can be obtained. As a result, as shown by the virtual line in Figure 3,
After the person is seated, the zigzag springs 11 and 11a are bent in a lower chord curve to provide a good fit to the thighs.

<Effects of the invention> As described above, according to the invention, the connection point of the upper end of the front spring forming the front fitting mouth to the zigzag spring is located at a position a required distance behind the front end of the zigzag spring, and the front end of the zigzag spring Since it has an overhanging structure, the front end of the seat can be made soft and the thigh support part can be made hard without using a coil spring.

In addition, since the connection point of the front spring is placed inside the frame and the overhanging zigzag spring is connected to the rectangular frame line, the overhang part at the front end of the zigzag spring joins the thigh support part, improving cushioning performance. , the feeling is improved and the thigh support is prevented from falling down, and by omitting the coil spring, cost can be reduced and the structure can be simplified.

[Brief explanation of drawings]

Figure 1 is a side view showing the overall configuration of the present invention;
The figure is a perspective view of the main part of the present invention, Figure 3 is a side view of the present invention showing the deflection state before and after seating, Figure 4 is a side view of the conventional example, and Figure 5 is a side view of the conventional example showing the deflection state. It is. 10a...Front spring, 10b...Rear spring, 11, 11a...Zigzag spring, 12...Crimping clip, 13...Frame line, 14...Crimping clip.

Claims (1)

[Scope of utility model registration request] In a seat cushion spring consisting of a plurality of zigzag springs, in which a front spring and a rear spring form a front spring and a rear spring on the front and rear sides of the seat of the fish mouth, the upper end of the front spring is set at a required distance from the front end of the zigzag spring. The front end of the zigzag spring overhangs the front fish mouse, and the overhanging zigzag spring is connected to the rectangular frame line with the connection point of the front spring located inside the frame. seat cushion spring.