JPH0576353U - Seat back frame used for vehicle seats - Google Patents

Abstract

(57) [Summary] [Purpose] The workability and weldability are improved by allowing the cross pipe frame member to be fitted easily into the hole on the seat back frame side in a fitted state. A burring hole 19 is projected into the inner surface 17 of the lower ends of the seat back frame sides 11, 12 with a reverse hole edge bending opening 20, and an end of the cross pipe frame bottom 13 is formed. The reverse hole edge bending opening 2
It is about to be set to 0.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat back frame used for a vehicle seat.

[0002]

[Background technology]

 Normally, the seat back frame of passenger car seats has a structure in which the cross pipe frame bottom is inserted into the burring hole on the side of the seat back frame and welded. If there were few burrs in the holes, it became difficult to insert the cross pipe frame bottom, and the workability deteriorated.

[0003]

[Challenges for devising]

 The object of this invention is to easily fit the cross pipe frame member into the hole of the seat back frame side in a fitted state to improve workability and weldability of the vehicle seat. To provide the seat back frame used for.

[0004]

[Means corresponding to the problem and action thereof]

 This invention discloses that a burring hole is projected to the inner surface of the lower end of the seat back frame side with a reverse hole edge bending opening, and the end of the cross pipe frame bottom is made into the reverse hole. It is about to be fitted into the curb opening.

[0005]

[Explanation of specific examples]

 Hereinafter, a seat back frame used for a vehicle seat according to the present invention will be described with reference to the specified and illustrated embodiments. FIGS. 1 and 2 are applied to a driver seat of a passenger car. The specific example 10 of the seat back frame used for the vehicle seat of this invention is shown, and in this seat back frame 10, the burring hole 19 has the reverse hole edge bending opening 20, and right and left seats. 2 are projected to the inner side surfaces 17 at the lower ends of the back frame sides 11 and 12, respectively, and both ends of the cross pipe frame bottom 13 are fitted into the reverse hole edge bending openings 20 thereof, and FIG. The cross pipe frame bottom 13 was welded as shown in FIG.

In particular, the burring hole 19 has its reverse hole edge bending openings 20 slightly retracted from the outer surfaces 18 of the left and right seat back frame sides 11, 12, and the left and right seats. A burring process was performed when the inner surface 17 of the back frame sides 11 and 12 was entirely projected.

Further, in the seat back frame 10, 14 is a cross pipe frame top, 15 is an S-shaped spring, and 16 is a head holder stay holder.

Therefore, since the burring hole 19 is provided with the reverse hole edge bending opening 20, the cross pipe frame bottom 13 is smoothly inserted into the burring hole 19 in a closely fitted state, Of the seat back frame sides 11, 12 of the left and right seat back frame sides, as a result of being fitted into its burring holes 19 without rattling. Welding of Nos. 11 and 12 with the cross pipe frame bottom 13 was made very simple, welding efficiency was improved, and in addition, good finish was obtained.

As is apparent from the embodiments of the present invention described with reference to the drawings, the contents of the present invention are well known to those having ordinary skill in the art of the present invention. , Is derived from the technical essence of the device, which is essential to the formation of the device and is the nature of the device in order to achieve the task of the device, and is objectively recognized to be inherent in it. Embodiments are easily embodied.

[0010]

[Benefits of the Invention] As can be understood from the above, the seat back frame used in the vehicle seat of the present invention has a burring hole having a reverse hole edge bending opening, and a seat back frame. The end of the cross pipe frame bottom fits snugly as it projects into the inside of the bottom edge of the side and is where the end of the cross pipe frame bottom fits into its reverse hole edge bend opening. Can be easily fitted into the burring hole, and the cross pipe frame bottom can be easily assembled to the seat back frame side, that is, the assembly workability is improved, Then, the rattling of the cross pipe frame bottom is avoided in advance, the welding becomes very simple and the welding efficiency is improved. Performance is improved and, in addition, the finish is good, and as a result, it is very useful and practical for vehicle seats.

[Brief description of drawings]

FIG. 1 is a perspective view showing a specific example of a seat back frame used for a vehicle seat of the present invention applied to a driver seat of a passenger car.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

[Explanation of symbols]

 19 Burring hole 20 Reverse hole edge bending opening

Claims (1)

[Scope of utility model registration request] 1. A burring hole is projected into the inner surface of the lower end of the seat back frame side with a reverse hole edge bending opening, and the end of the cross pipe frame bottom is provided with its reverse hole edge. A seat back frame used for a vehicle seat that is to be fitted into a bending opening.