JP2522447Y2 - Lumbar support protector for thin sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a protector for a lumbar support attached to a vehicle seat.

[Conventional technology]

Conventionally, there is a vehicle seat in which a mechanical lumbar support S is incorporated in a seat back 30 as shown in FIG.

As shown in FIG. 6, the lumbar support S is fastened to the inner surface 35a of the bracket 35, and is provided inside the cushion pad 31 of the seat back 30, and the operating shaft 11 is provided on one side surface of the seat back 30. An operation knob 10 is attached to a tip of the projection (shown on the left side in the figure, hereinafter also referred to as an operation side).

The bracket 35 is formed by bending a strip-shaped steel plate at one end side thereof so as to be welded to a predetermined position of the seat frame 33 in a wound shape, and operating the lumbar support S on the mounting edge 35b on the front end side. Notch groove through which shaft 11 can be inserted
35c and bolt holes 35d, 35d formed at upper and lower positions of the cut groove 35c so that the lumbar support S can be tightened (see FIG. 7).

Further, in the figure, reference numeral 36 denotes a notched recess formed by partially cutting out the corner 31a on the operation side of the lumbar support S among the corners 31a on the back side of the cushion pad 31. The lumbar support S is provided for assembling work.

The cut-out recess 36 is cut in a predetermined range in the vertical direction at a depth at which the outer side surface 35e of the bracket 35 is substantially flush.

Further, p is a protector and a cushion pad
When the seat skin 32 is wrapped around 31, the corner portion 31a of the cushion pad 31 in the notch concave portion 36 is mounted in the notch concave portion 36 to form a shape.
The mounting base 37 and the lid 38 are formed in a substantially L-shape by integral molding of synthetic resin or the like, and the mounting base 37 is bolted to the bracket 35 via the lumbar support S so as to be fastened to the bracket 35 together.
a, 37a are penetrated, and an insertion hole 37b is penetrated so that the operation shaft 11 of the lumbar support S can be inserted. The portion 31a is formed into a curved surface so that it can be formed continuously.

The protector p formed as described above is
By fixing together with the lumbar support S to the notch 35 and being mounted in the notch 36, the shape of the corner of the notch 36 when the sheet skin 32 is wrapped was formed.

[Problems to be solved by the invention]

However, the conventional protector p has a problem that it cannot cope with the so-called thinning of a recent sheet.

That is, the curved surface R of the cushion pad 2 of the recent thin sheet is formed with a larger curvature over a wide range with respect to the curved surface r of the corner portion 31a of the conventional cushion pad 31 by a dashed line in FIG. ), The outside of the seat frame 4 is thin.

For this reason, the conventional notch concave portion 36 has a curved surface r of the corner portion 31a.
The cutout recess 6 in the thin-type cushion pad 2 is formed by cutting out a part of the curved surface R of the corner 2a, whereas the cutout recess 6 in the thin-type cushion pad 2 is formed by cutting out all the portions. In order to form a continuous corner 2a in the cutout recess 6, a protector P that covers almost the entire opening side 6a along the curved surface R is required.

Further, since the outside of the seat frame 4 is made thinner, the notch recess 6 becomes narrower than before, and there is a problem that a smaller protector P is required.

However, in the case of a conventional block-shaped protector p formed by integral molding of a synthetic resin or the like, there is a limit to downsizing due to the necessity of securing the mounting space.
6a could not be formed into a shape that could be shielded over almost the entire surface, and was insufficient as a protector.

The present invention is not limited to the case where the notch 6 is formed in the corner 2a in order to attach the lumbar support to the thin type seat back. To provide a protector P that can be formed continuously.

[Means for solving the problem]

The present invention incorporates a lumbar support formed by cutting out a part of a corner portion of a cushion pad constituting a seat back of a thin sheet having a corner portion formed into a curved surface over a wide area with a relatively large curvature. A protector attached to the notch recess for mounting, a mounting base attached to a bracket for attaching the lumbar support,
A lid having a curved shape that is continuous with the corner curved surface of the cushion pad when the opening side of the notch recess is closed, and a hinge that connects the lid to the mounting base and rotates the lid with respect to the mounting base; And a locking means provided at portions of the mounting base and the lid facing each other, the locking means being configured to rotate the lid toward the mounting base when the lid is rotated. Is provided so as to be detachably engaged with the mounting base to close the opening side of the notch recess.

[Action]

According to the present invention, by adopting the above-described configuration, prior to enclosing the sheet skin, the engaging claws formed on the cover of the protector are elastically engaged with the engaging portions formed on the mounting base. Since the curved portion formed in the lid portion covers almost the entire opening side of the notch concave portion, the corner portion of the cushion pad also functions to be formed with a continuous curved surface in the notch concave portion. .

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows a recent cross section of a so-called thin sheet seat back 1, in which corner portions 2a on the back side of a cushion pad 2 in which a seat skin 3 is wrapped are conventional corner portions 31.
It is formed with a curved surface R having a larger curvature and a wider range than a and 31a (indicated by a chain line in the figure).

S is a mechanical lumbar support provided inside the cushion pad 2, and its operation shaft 11 slightly protrudes from the operation side of the seat back 1 (shown on the left side of the seat back 1 in this example) 2b. An operation knob 10 is attached to the tip. The operation knob 10 is attached after the seat skin 3 is covered with the cushion pad 2.

Reference numeral 6 denotes a notch recess formed by cutting out a corner 2a on the operation side of the cushion pad 2 so as to have a substantially fan-shaped cross section, which facilitates the work of assembling the lumbar support S into the cushion pad 2. It is provided in order to make.

The cutout recess 6 is formed by cutting in a predetermined range in the vertical direction with respect to the corner 2a, and at a depth at which the mounting edge 5e of the bracket 5 to which the lumbar support S is mounted projects into the cutout recess 6. Thus, the side wall 6b is positioned closer to the lumbar support S than the conventional notched concave portion 36, and the curved surface R of the corner 2a can be formed more easily and continuously by the protector 5 described later. .

Here, the bracket 5 is formed by bending a strip-shaped steel plate slightly at one end thereof and welding it to a predetermined position of the seat frame 4 in a wrapping manner. Notch groove through which operation shaft 11 can be inserted
5a and bolt holes 5b, 5b formed at upper and lower positions of the cut groove 5a so that the lumbar support S can be fastened.

P is a protector. When the seat skin 3 is wrapped around the cushion pad 2, the curved surface R of the corner 2a in the notch recess 6 is formed to be substantially continuous. As shown in FIG. 2, a plate-like member made of, for example, synthetic resin and having a vertical width slightly smaller than the notch height of the notch recess 6 is
An integral hinge 7 is provided vertically at substantially the center in the lateral direction, and can be folded in two through the integral hinge 7,
The integral hinge 7 has a mounting base 8 on one side and a lid 9 on the other side.

The mounting base 8 is bent outward at substantially the center in the lateral direction at right angles, and is formed in an angle shape. A mounting edge 8a is formed at the tip side, and a locking edge 8b is formed at the integral hinge 7 side. It becomes.

The mounting edge 8a has an insertion hole 8c at substantially the center thereof through which the operation shaft 11 of the lumbar support S can be inserted, and bolt holes 8d and 8d formed above and below the insertion hole 8c. The locking edge 8b is located from the outer surface 5d of the bracket 5 to slightly before the side wall 6b of the cutout recess 6, and has a square shape at the center. Is formed.

On the other hand, the lid 9 has a supporting edge 9d connected to the locking edge 8b via the integral hinge 7, a curved portion 9e extending in a slightly acute angle to the supporting edge 9d, and a curved portion 9e. And a locking claw 9a protruding inside the portion 9e.

The supporting edge 9d is formed to have a length such that the curved portion 9e can follow the curved surface R and shield the opening 6a of the cutout recess 6.

The curved portion 9e extends from the base 9g on the support edge 9d side to the front edge 9c, and in the notch recess 6, the cushion pad 2 is formed.
Is formed so that the curved surface R at the corner 2a can be formed continuously, and a cut groove 9b is formed substantially at the center of the front end edge 9c. This cut groove 9b is
Is a relief to the operation shaft 11 of the lumbar support S when the lumbar support S is closed with respect to the mounting base 8, and is formed so as to be cut to a depth at which the opening side 6a of the cutout recess 6 can be shielded from the leading edge 9c.

As shown in FIG. 3, the engaging claw 9a has a hook 9f formed with a fitting groove 9k at the tip thereof, and a claw piece 9f, which is formed on the mounting base 8 in a bifurcated manner. It is formed so as to be elastically engageable with the stop hole 8e.

The protector P formed as described above is fastened together with the lumbar support S when the lumbar support S is attached to the bracket 5 and attached to the notch recess 6 (see FIG. 4).

That is, the lumbar support S is provided on the inner side surface 5f of the bracket 5 and the operating shaft 11 is connected to the notch groove of the bracket 5.
The protector P is positioned so as to extend through the notch 6 through the notch 5a, and is in contact with the outer surface 5d of the bracket 5 in a posture in which the operating shaft 11 is inserted into the insertion hole 8c. Bolts 12 and 12 in the bolt hole of protector P
The lumbar support S and the protector P are inserted into the bolt holes 5b, 5b of the bracket 5 and screwed into the screw holes 13, 13 formed in the lumbar support S (shown in FIG. 7). 5 and attached together.

After that, the cover 9 of the protector P is closed, and the locking claw 9a is closed.
Into the engaging hole 8e, and into the engaging groove 9k of the engaging claw 9a.
By fitting the upper and lower edges 8f, 8f of 8e into engagement, the curved portion 9e of the lid 9 covers almost the entire opening side 6a of the notch recess 6 and the corner 2a. Is held at a position where the curved surface R is formed substantially continuously.

At this time, the operating shaft 11 protruding into the notch recess 6 is
Is inserted into the cut groove 9b formed in the groove.

This embodiment is configured as described above, and the protector P is mounted in the cutout recess 6, and the lid 9 is locked and held in the closing position and the opening direction in the closed position. As a result, the curved portion 9e of the lid 9 is held at a position where the curved portion 9e of the cover portion 9 almost completely covers the opening side 6a of the cut concave portion 6, and the curved surface shape of the curved portion 9e is the same as that of the corner portion 2a of the cushion pad 2. The notch recess 6 is also formed so as to have a substantially continuous curved surface R, so that even when the sheet skin 3 is wrapped, the thin corner portions 2a are formed continuously, and the notch recess 6 is formed. In 6, no wrinkles, dents, or the like are formed on the sheet skin 3, and a thin-walled sheet with good appearance can be obtained.

[Effect of the invention]

With the above configuration, the protector capable of forming the corner portion into a continuous curved surface is attached to the notch concave portion formed at the corner portion of the cushion pad. Even when wrapping is performed, wrinkles, sagging, etc. do not occur on the sheet skin in the notch concave portion, it is possible to form a continuous smooth curved corner portion, and provide a good-looking seat back. be able to.

[Brief description of the drawings]

1 to 5 relate to an embodiment of the present invention, FIG. 1 is a cross-sectional view of a thin type seat back, FIG. 2 is a perspective view of a protector, FIG. FIG. 4 shows a detailed view of the portion C in FIG. 1, FIGS. 5 to 7 relate to a conventional example, FIG. 5 is an overall perspective view of the seat, and FIG.
FIG. 7 is a sectional view taken along line AA of FIG. 7, and FIG. 7 is an exploded perspective view of FIG. 1, 30 ... seat back 2, 31 ... cushion pad 2a, 31a ... corner R, r ... curved surface 3, 32 ... seat skin 4, 33 ... seat frame 5, 35 ... bracket P, p: Protector 6, 36 ... Notch recess, 6a ... Open side 7 ... Syntegral hinge 8, 37 ... Mounting base 8a ... Mounting edge, 8b ... Locking edge 9, 38 ... Lid 9a: Locking claw, 9e: Curved section S: Lumbar support 10: Operation knob, 11: Operation shaft

Claims (1)

(57) [Scope of request for utility model registration] A lumbar support formed by cutting out a part of a corner portion of a cushion pad constituting a seat back of a thin sheet whose corner portion has a relatively large curvature and is formed into a curved surface over a wide range. A protector attached to a notch recess for incorporation, wherein the mounting base is attached to a bracket for attaching the lumbar support,
A lid having a curved shape that is continuous with the corner curved surface of the cushion pad when the opening side of the notch recess is closed, and a hinge that connects the lid to the mounting base and rotates the lid with respect to the mounting base; And a locking means provided at portions of the mounting base and the lid facing each other, the locking means being configured to rotate the lid toward the mounting base when the lid is rotated. A lumbar support protector for a thin sheet, characterized in that the lambar support protector is detachably engaged with the mounting base to close the opening side of the notch recess.