JPH06133830A - Sheet frame structure - Google Patents

Abstract

PURPOSE:To improve the number of parts, working assembling property and reduction in weight by providing a sheet frame with reinforcing plates and forming the hook parts of springs on these reinforcing plates and to fix harnesses without using another parts, such as harness springs. CONSTITUTION:Both side parts of a sheet frame body 2 consisting of a sheet panel body where the ends of sheet spring are hooked are provided with hole parts 11 by downward louvering in a downward direction. The reinforcing plates 4 installed to both side parts of the sheet frame body 2 are integrally provided with the hook parts 10 to which the ends of the sheet springs are hooked through the hole parts 11. The louvering parts 12 in the downward direction of the sheet frame body 2 are formed in the fixing parts of the harnesses 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat frame structure, and more specifically, an expandable seat spring such as an S-shaped spring is stretched in a predetermined tension state between both side portions of a frame-shaped seat frame. The present invention relates to a seat frame structure that is stretched over.

[0002]

2. Description of the Related Art For example, in a seat cushion or a seat back of a vehicle seat, an actual flat opening 2-127.
As can be seen in Japanese Patent No. 241, there is an S between the left and right locking portions provided on both sides of the seat frame having the frame shape.
A plurality of seat springs such as character springs are provided so as to be stretched around each other. Mechanical components such as a power slide, a power device, and a power lumbar are arranged near the seat frame and the S-shaped spring, and many harnesses are arranged below the seat frame.

By the way, as a hook portion for hooking and locking the above-mentioned seat spring end portion, conventionally, cut and raised portions are integrally provided at corresponding portions of both side portions of a substantially frame-shaped seat frame, and these cut and raised portions are integrally formed. The structure is such that the end of the seat spring is hooked and locked to the portion. Further, Japanese Utility Model Laid-Open No. 59-174935 discloses a seat cushion frame mounted on an upper rail of a seat slide rail, in which a reinforcing member is fixedly provided on a contact surface between the two.

[0004]

However, in recent years, seat frames for vehicle seats and the like have often been formed of thin plate materials for the purpose of weight reduction. However, in the cut-and-raised portion of such a thin plate panel material, as shown in, for example, Japanese Utility Model Laid-Open No. 2-127241, there is a problem in terms of strength as a hook portion of a seat spring. It was necessary to improve the structure and adopt a structure in which the end of the seat spring is double hooked and locked.

Further, the above-mentioned hooking portion of the seat spring is formed on a bracket member made of a thick plate material, and the bracket member is fixed to both inner sides of the seat frame made of the thin plate material by welding, screwing or the like. Although such a structure is also known, in such a structure, the number of components, the workability, the assembling property, etc. are increased, the cost is increased, and the weight of the entire seat is increased. there were.

Further, even in the cut-and-raised portion provided on the thick plate material as described above, abnormal noise is generated by collision with the end portion of the seat spring locked by the cut-and-raised portion. As shown in Japanese Laid-Open Patent Publication No. 109657, a structure in which a support material such as a resin material is attached to the end of the spring is also necessary, and such a point must be taken into consideration.

Various mechanical parts such as a power slide and a power device are arranged near the seat frame and the S-shaped spring, and the wiring harnesses are arranged in relation to the vehicle body floor. There are disadvantages that the cost is increased because the restrictions are large and the harnesses need to be circumvented or a separate part such as a harness band for fixing these harnesses is required.

The present invention has been made in view of the above circumstances, and a hook portion of a seat spring is attached to a seat frame made of a thin panel material, the number of constituent parts, workability, assemblability, and weight reduction of a seat. Without causing problems such as
Moreover, it is an object of the present invention to obtain a seat frame structure which is economical in that a seat spring can be assembled without any problem in terms of strength and further, a separate part such as a harness band is unnecessary.

[0009]

In order to meet such a demand, a seat frame structure according to the present invention is configured such that a seat frame having a substantially frame shape is stretched between both side portions of the seat frame in a tensioned state. In a seat frame structure including seat springs arranged, the seat frame is formed of a thin panel material, and the seat frame end portions are hooked downward on both sides of the seat frame by cutting and raising. A hole is provided, and a reinforcing plate attached to both sides of the seat frame is integrally provided with a hook portion that penetrates the hole and is hooked by the end of the seat spring. It is characterized in that the cut-and-raised parts are formed on the fixing portion of the harness.

[0010]

According to the present invention, a reinforcing plate made of a thick plate attached to a seat frame made of a thin panel material is used,
By hooking the hook part provided on a part of the seat frame through a hole formed by cutting and raising the seat frame downward, and hooking and locking the end of the seat spring in this state,
The seat spring can be attached to the seat frame while maintaining strength, and since the downward cut and raise of the seat frame is formed in the fixing part of the harness, separate parts such as a harness band are unnecessary, and it is economical. It is possible to obtain a different seat frame structure.

[0011]

1 to 3 show an embodiment of a seat frame structure according to the present invention, and in this embodiment, it is applied to a seat cushion frame. In these figures, the reference numeral 1 indicates the seat frame,
The seat frame main body 2 is press-molded by a thin plate panel material having a shallow dish shape having a frame shape in which a rectangular opening 3 is formed in a central portion.

Reinforcing plates 4 and 4 are fixed by welding, riveting or the like from the outside of both sides of the seat frame body 2 to the bottom surface. The reinforcing plates 4 and 4 are formed of thick plate material so that their cross sections have a substantially L shape. In the present embodiment, the outer vertical portion of the reinforcing plate 4 is formed as a mounting member for a reclining device that tiltably supports a seat back (not shown), and the horizontal portion serves as a mounting member such as a seat slide upper. However, it is not limited thereto.

According to the present invention, in the seat frame 1 described above, a plurality of substantially S-shaped portions are formed between the both sides of the frame-shaped seat frame main body 2 so as to cover the opening 3 portion. The seat spring 5 to be presented is arranged in a stretched state, and a hook portion 10 for hooking and locking the end portion of the seat spring 5 is formed from the thin plate panel material as shown in FIGS. 1 to 3. It is not formed by the seat frame main body 2 but is formed by projecting upward by cutting and raising the bottom surface of the reinforcing plates 4 and 4 fixed to the main body 2.

That is, if a hook portion for hooking and locking the end portion 5a of the seat spring 5 is provided by cutting and raising the seat frame body 2 made of a thin plate panel material that receives a load by a seated person, the hook portion can withstand the load. In this invention, a reinforcing plate 4 made of a thick plate that is attached to the frame body 2 for another purpose is used, and the hook portion 10 for hooking is cut and raised. Are integrally provided with each other and are assembled through the hole portion 11 formed on the frame main body 2 side, thereby reducing the number of parts, simplifying the configuration, and solving the problem in strength.

The hook portion 10 is the seat frame body 2
A hole portion 11 penetrating so as to face the inside of the seat frame body 2 is formed at a corresponding position. This hole 11
Is formed by cutting and raising in a downward direction at the portions on both sides of the seat frame body 2 where the end portions 5a of the seat springs 5 are hooked. The cut-and-raised portion 12 cut and raised downward is formed on the fixing portion 14 of the harness 21.

The embossed hook portion 10 can be formed by bulging one step from the bottom surface portion of the reinforcing plate 4,
In this way, if the hook portion 10 is formed by bulging one step,
It is possible to prevent the interference sound due to the bending of the spring 5 and to improve the durability due to the repeated load, and various other modifications can be made. Furthermore, 10a in the drawing is a hooking piece on which the spring end 5a is hooked in the hook portion 10.

As shown in FIG. 3, the cut-and-raised portion 12 cut and raised downward is formed on the fixing portion 14 of the harness 21 by caulking or the like. Although a detailed description of the harness 21 is omitted, a harness arranged from the seat cushion to the seat back, for example, a device, wiring for connecting a member for driving a headrest and a motor, a mechanism for driving a lumbar support or a slide mechanism. And the wiring that connects the motor and the motor.

It is needless to say that the present invention is not limited to the structure of the above-described embodiment, and that the shape, structure, etc. of each part can be appropriately modified or changed. For example, in the above-described embodiments, the case where the present invention is applied to the seat cushion frame in the vehicle seat has been illustrated, but it goes without saying that the present invention is not limited to these.

[0019]

As described above, according to the seat frame structure according to the present invention, the seat frame is formed by the thin plate panel material, and the seat spring ends are hooked on both sides of the seat frame. A hole portion is provided by cutting and raising downwards, and a hook portion through which the hole portion is hooked is provided integrally with a reinforcing plate attached to both side portions of the seat frame. Therefore, despite the simple structure, the number of component parts can be minimized compared to the case where a dedicated bracket is attached as in the past, and the whole sheet including the seat frame made of thin plate panel material can be used. The weight can be reduced and the cost can be reduced.

Further, according to the present invention, since the downward cut and raised portion of the seat frame is formed in the fixing portion of the harness, a separate part such as a harness band is unnecessary, and the seat is excellent in economy. A frame structure can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment in which a seat frame structure according to the present invention is applied to a seat cushion.

FIG. 2 is an enlarged schematic perspective view of a hook portion that is a main portion in FIG.

3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 1 Seat Frame 2 Seat Frame Main Body 3 Opening 4 Reinforcement Plate 5 Seat Spring 10 Hook Part 11 Hole Part 12 Cut and Raised Part 21 Harness

Claims (1)

[Claims] 1. A seat frame structure comprising: a substantially frame-shaped seat frame; and a seat spring that is stretched between both side portions of the seat frame. And a hole is formed by cutting and raising the seat spring end on both sides of the seat frame by cutting and raising the seat spring, and the reinforcing plate attached to both sides of the seat frame, A seat frame structure, wherein a hook portion through which a seat spring end portion is hooked is provided integrally through a hole portion, and a downward cut and raise of the seat frame is formed in a fixing portion of a harness.