JP3066418B2 - Headless mounting device for vehicle seat - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a headrest mounting device for a vehicle seat.

(Prior Art) With respect to the mounting structure of a headrest in a vehicle seat, a conventional general one has a double-legged structure, but a single-legged headrest has various advantages. A metal skeleton frame to form a
A bracket consisting of a front plate member and a rear plate member welded and fixed to the upper position of the skeletal frame so as to protrude upward, a hollow metal support rod having a substantially front shape, and a horizontal support part of the metal support rod. Headrest skeleton frame, front and rear through-holes formed in the vertical support portion of the metal support rod, and the through-hole faces when the vertical support portion is inserted between the front plate member and the rear plate member from above. A headrest mounting device for a vehicle seat comprising a bolt insertion hole formed at a position, a bolt inserted into the bolt insertion hole, and a nut screwed into the bolt.
It has a single leg configuration.

(Problems to be Solved by the Invention) However, the structure includes a hollow metal support rod having a substantially frontal shape, a headrest skeleton frame welded to a horizontal support portion of the metal support rod, and a vertical structure of the metal support rod. Front and rear through holes formed in a support portion, a bolt insertion hole formed at a position where the through hole faces when the vertical support portion is inserted from above between the front plate member and the rear plate member, and the bolt insertion hole Since it is composed of a bolt inserted into the nut and a nut screwed to the bolt, in order to maintain the strength, if the nut is strongly tightened, the hollow vertical support portion will be crushed,
Another challenge arises in that it cannot be tightened too strongly.

(Object of the Invention) An object of the present invention is to secure the strength of a mounting portion in adopting a cantilever structure of a headrest.

(Means for Solving the Problems) Accordingly, the present invention provides a metal skeleton frame 1 forming a backrest sheet of a vehicle and a front plate member 16 welded and fixed to an upper position of the skeleton frame 1 so as to protrude upward. And a bracket 13 composed of a rear plate member 17, a hollow metal support rod 8 having a substantially frontal shape, and a horizontal support portion 9 of the metal support rod 8.
A frontrest through-hole 32 formed in the vertical support portion 10 of the metal support rod 8;
One end is flush with the front and rear through-hole 32 and the other end is projected.
The cylindrical metal collar 12 welded and fixed to become 12a, and the vertical support portion 10 is attached to the front plate member 16 and the rear plate member 17.
A vehicle seat comprising: a bolt insertion hole 18 formed at a position where the cylindrical metal collar 12 faces when the cylinder metal collar 12 is inserted from above; a bolt 14 inserted into the bolt insertion hole 18; -A headrest mounting device for the vehicle.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a backrest metal skeleton frame of a backrest seat of a vehicle seat, and an upper side frame 2, a lower side frame 3, and the upper side frame 2 And lower horizontal frame 3
Are formed in a square frame shape by the side vertical frames 4 and 4.

Reference numeral 5 denotes a headrest skeleton frame of the headrest, which is provided so as to be located at the upper left and right center of the backrest metal skeleton frame 1. The headrest frame 5 is formed by bending a thin metal plate into an inverted U shape. Reference numeral 6 denotes a front plate of the headrest skeleton frame 5, and reference numeral 7 denotes a rear plate of the headrest skeleton frame 5.

Reference numeral 8 denotes an aerial metal support rod fixed to the headrest skeleton frame 5, and a vertical support part 10 which bends one end of a horizontal support part 9 fixed to the headrest skeleton frame 5 downward and fixes the backrest metal skeleton frame 1. Is formed, and when viewed from the front, it is formed in a substantially shape.

The horizontal metal support rod 8 is fixed by welding by inserting the horizontal support portion 9 between the lower portions of the front plate 6 and the rear plate 7 of the headrest frame 5. 11 is a welding hole.

The vertical support portion 10 is pressed from the front and rear sides to form an elliptical cross section. A plurality of front-rear through-holes 32 are formed in the vertical support 10 at predetermined intervals above and below.

The cylindrical metal collar 12 having a cylindrical shape in the front-rear direction is inserted and fixed in the front-rear through-hole 32. The tubular metal collar 12 is welded and fixed so that the rear end is flush with the rear surface of the vertical support portion 10 and the front end projects forward from the front surface of the vertical support portion 10 to form a protrusion 12a.

A bolt 14 for fixing the vertical support 10 to the bracket 13 of the backrest metal skeleton frame 1 is inserted through the cylindrical metal collar 12, and when the bolt 14 is strongly tightened, the vertical support 10 To prevent crushing.

The bracket 13 is provided on a bent portion 15 formed between one of the left and right sides of the upper horizontal frame 2 and the upper portion of the side vertical frame 4 so as to protrude upward.

The bracket 13 is divided into a front plate member 16 and a rear plate member 17, and each is separately manufactured by pressing,
Thereafter, the two are fixed by welding to each other.

The front-side plate member 16 and the rear-side plate member 17 are bent so that a substantially middle portion in the vertical direction is inclined forward toward the lower side.

Further, a bolt insertion hole 18 is formed at the left and right intermediate position above the front plate member 16 and the rear plate member 17 at a position where the cylindrical metal collar 12 faces when the vertical support portion 10 is inserted from above.

On the left and right sides of the bolt insertion hole 18, through holes 19 for reducing weight and attaching a cover surrounding the outer periphery of the bracket 13 are formed.

Reference numeral 20 denotes a reinforcing rib formed at a desired position of the front plate member 16 and the rear plate member 17, and reference numeral 21 inserts the vertical support portion 10 of the hollow metal support rod 8 formed on the inner surface of the rear plate member 17 from above. The positioning projection 22 when the rear side plate member 17
A nut fixed to the outer surface of the bolt insertion hole 18; 23, a bent portion formed on a side edge of the front plate member 16; 24, a bent portion formed on a side edge of the rear plate member 17; The front plate member 16 and the rear plate member 17 are fixed to each other by superimposing and bending the bent portions 24 to form an integral bracket 13.

25 is a bent portion formed on the inner side edge of the front plate member 16,
Reference numeral 26 denotes a bent portion formed on the inner side edge of the rear plate member 17, which prevents the cushion material from being damaged.

Reference numeral 30 denotes a reinforcing member provided between the side vertical frames 4, 4 of the backrest metal skeleton frame 1, and reference numeral 31 denotes a left-right spring provided between the side vertical frames 4, 4.

(Operation) Next, the operation will be described.

In the present invention, the backrest metal skeleton frame 1 is formed by bending a single steel material, and a spring 31 is attached between the side vertical frames 4 and 4 of the backrest metal skeleton frame 1.

Separately, a front plate member 16 and a rear plate member 17 having a bolt insertion hole 18 and a through hole 19 are formed by press working, and the rear plate member 17 of the front plate member 16 is joined to form a bracket 13. Then, the bracket 13 is fixed to the bent portion 15 of the backrest metal skeleton frame 1.

A cushion material is attached to the backrest metal skeleton frame 1 in this state, the surface of the cushion material is covered with a skin, and assembly of the backrest sheet is completed.

Thus, the hollow pipe is bent into a substantially frontal shape to form a hollow metal support rod 8 composed of a horizontal support portion 9 and a vertical support portion 10. The through-hole 32 is formed, and the front and rear through-hole 32 is formed.
Then, the tubular metal collar 12 is inserted and fixed so that the rear end thereof is flush with the rear surface of the vertical support portion 10 and the front end projects forward from the front surface of the vertical support portion 10 to form a projection 12a.

Next, the thin metal plate is bent into an inverted U shape to form a headrest skeleton frame 5, and the horizontal support of the hollow metal support rod 8 is provided between the front plate 6 and the lower portion of the rear plate 7 of the headrest skeleton frame 5. The headrest frame 5 and the hollow metal supporting rod 8 are welded and fixed by holding the portion 9, a cushion material is attached to the headrest frame 5, and the surface of the cushion material is covered with a skin to complete the assembly of the headrest. deep.

Then, the vertical support 10 of the hollow metal support rod 8 is inserted from above into the bracket 13 fixed to the metal skeleton frame 1 exposed at the upper part of the backrest sheet, and the cylindrical metal collar 12 of the vertical support 10 is inserted. And the bolt insertion hole 18 of the bracket 13 are aligned with each other, a bolt 14 is inserted into each cylindrical metal collar 12 from the front side, and screwed and fastened to a nut 22 on the back side of the front plate member 16, and the outer periphery of the vertical support portion 10 When the cover is attached to the headrest, the attachment of the headrest is completed.

In this case, since the cylindrical metal collars 12 and 12 have a cylindrical shape in the front-rear direction and are formed to have a length in contact with the inner surfaces of the front plate member 16 and the rear plate member 17 of the bracket 13, the bolts are provided. 14, the vertical support of the hollow metal support rod 8
When tightening and fixing 10 to the bracket 13, the tightening force of the bolt 14 is supported by the cylindrical metal collar 12, so
Even if the bolt 14 is strongly tightened, the vertical support portion 10 is prevented from being crushed, no gap is generated between the vertical support portion 10 of the hollow metal support rod 8 and the bracket 13, and the mounting accuracy is improved. To prevent

Since the bolt 14 can be strongly tightened, the strength of the mounting portion between the vertical support portion 10 of the hollow metal support rod 8 and the bracket 13 is improved, and rattling after mounting is prevented.

Further, the front end of the cylindrical metal collar 12 projects forward from the front surface of the vertical support portion 10, and the rear end is welded and fixed so as to be located on the same plane as the rear edge of the vertical support portion 10.
Since the rear surface of the vertical support portion 10 is in close contact with the rear plate member 17 of the bracket 13, the load applied to the headrest can be supported by the surface of the rear plate member 17.

Thus, the bracket 13 is divided into the front side plate member 16 and the rear side plate member 17, and after manufacturing each by press working, both are fixed by welding, so that the through hole 19 and the reinforcing rib 20 are formed. Since it can be manufactured by a simple press working even with a complicated shape having the above, the whole can be formed into a small and lightweight shape by a thin metal plate.

On the inner surface of the rear plate member 17, positioning projections 21 and 21 projecting inward are formed to have the left and right widths of the vertical support portion 10 of the hollow metal support rod 8, so that the vertical support portion 10 is When it is inserted from above, the vertical support portion 10 is guided by the positioning projections 21 and 21 and descends, and easily fits with the bolt holes 18 and 18 of the cylindrical metal collar 12 and the bracket 13 of the vertical support portion 10. Can be done.

(Effects) Regarding the mounting structure of the headrest in the vehicle seat, the conventional general one has a two-legged structure, but a headrest having a single-legged structure has various advantages. A metal skeleton frame to be formed,
A bracket 13 composed of a front plate member and a rear plate member welded and fixed to the upper position of the skeletal frame so as to protrude upward, a hollow metal support rod having a substantially front shape,
A headrest skeleton frame welded to the horizontal support portion of the metal support rod, front and rear through-holes formed in the vertical support portion of the metal support rod, and the front support member and the rear plate member having the vertical support portion from above. A headrest mounting device for a vehicle seat comprising a bolt insertion hole formed at a position where the through hole faces when inserted, a bolt inserted into the bolt insertion hole, and a nut screwed into the bolt.
It has a single leg configuration.

However, the structure includes a hollow metal support rod having a substantially frontal shape, a headrest skeleton frame welded to a horizontal support part of the metal support rod, and front and rear through holes formed in a vertical support part of the metal support rod. A bolt insertion hole formed at a position where the through-hole faces when the vertical support portion is inserted from above between the front plate member and the rear plate member; a bolt inserted into the bolt insertion hole; Because it is made of a nut that is screwed into, when the nut is tightened strongly to maintain the strength, the hollow vertical support will be crushed,
Another challenge arises in that it cannot be tightened too strongly.

However, the present invention comprises a metal skeleton frame 1 forming a backrest sheet of a vehicle, and a front plate member 16 and a rear plate member 17 welded and fixed to an upper position of the metal skeleton frame 1 so as to protrude upward. A bracket 13, a hollow metal support rod 8 having a substantially frontal shape, a headrest frame 5 welded to a horizontal support 9 of the metal support rod 8,
A front-rear through-hole 32 formed in the vertical support portion 10 of the metal support rod 8, and a cylindrical metal welded and fixed to the front-rear through-hole 32 such that one end thereof is flush with the other end to form a protrusion 12 a. Color 1
2 and the cylindrical metal collar when the vertical support portion 10 is inserted from above between the front side plate member 16 and the rear side plate member 17
A headrest mounting device for a vehicle seat comprising a bolt insertion hole 18 formed at a position facing 12, a bolt 14 inserted into the bolt insertion hole 18, and a nut 22 screwed to the bolt 14. Because there is Since the headrest frame 5 is fixed to the hollow metal supporting rod 8, the structure is simple and novel in shape as compared with the conventional two-leg structure, and a cushion material is attached and a skin surrounding the outer periphery of the cushion material is provided. Mounting becomes easy.

B. When the vertical support portion 10 of the hollow metal support rod 8 is inserted from above into the space between the front plate member 16 and the rear plate member 17 of the bracket 13, the cylinder is inserted between the bolt insertion holes 18 of the front plate member 16 and the rear plate member 17. When the bolt 14 inserted into the bolt insertion hole 18 is screwed into the nut 22, the bracket 13 and the vertical support portion 10 are not likely to be crushed even if they are strongly tightened, because the metal collar 12 is exposed.

C. Therefore, when the headrest frame 5 is mounted in a cantilever structure by the hollow metal support rod 8, the strength of the mounting portion becomes uneasy. However, in the present invention, the strength of the mounting portion between the bracket 13 and the vertical support portion 10 can be ensured. .

D. Further, since the bracket 13 and the vertical support portion 10 are not liable to be crushed, it is not necessary to make the bracket 13 and the vertical support portion 10 large and thick, so that the size and weight can be reduced.

E. Since the mounting portion between the hollow metal support rod 8 and the bracket 13 can be made smaller, the appearance of the hollow metal support rod 8 can be reduced.

This has the effect.

[Brief description of the drawings]

1 is a front view of the entire frame of a vehicle seat and a headrest, FIG. 2 is a front view of a headrest, FIG. 3 is a side view thereof, FIG. 4 is an enlarged sectional view of a main part, and FIG. 6 is an assembled perspective view of the bracket, FIG. 7 is a sectional view taken along line AA of FIG. 6, FIG. 8 is a sectional view taken along line BB of FIG.
FIG. 10 is a cross-sectional view taken along the line CC of FIG. 6, FIG. 10 is a front view of the mounting state of the bracket, and FIG. 11 is a side view of the same. DESCRIPTION OF SYMBOLS 1 ... Backrest metal skeleton frame, 2 ... Top horizontal frame, 3 ...
Lower horizontal frame, 4 side vertical frame, 5 headrest frame, 6 front plate, 7 rear plate, 8 hollow metal support rod, 9 horizontal support, 10 vertical Supporting part, 11 ... welding hole, 12 ... cylindrical metal collar, 12a ... protruding part, 13 ...
Bracket, 14 bolt, 15 bent part, 16 front plate member, 17 rear plate member, 18 bolt insertion hole, 19
… Through holes, 20 …… reinforcing ribs, 21 …… positioning projections, 22…
… Nut, 23, 24 …… Bend, 25, 26 …… Bend, 30…
... Reinforcing member, 31... Spring, 32.

Continued on the front page (56) References Japanese Utility Model Showa 60-77454 (JP, U) Japanese Utility Model Showa 60-191252 (JP, U) Japanese Utility Model Showa 54-154810 (JP, U) Japanese Utility Model Showa 58-74849 (JP, U.S.A.) , U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60N 2/48 A47C 7/38

Claims (1)

(57) [Claims] 1. A metal frame 1 forming a backrest sheet of a vehicle, and a front plate 16 and a rear plate welded and fixed to an upper portion of the frame 1 so as to protrude upward.
17, a hollow metal support rod 8 having a substantially frontal shape, a headrest frame 5 welded to a horizontal support 9 of the metal support rod 8, and a vertical support 10 of the metal support rod 8. The front and rear through-holes 32 formed in the front and rear through-holes 32 have one end flush with the other end and a projecting portion 12a.
And the vertical support portion between the cylindrical metal collar 12 welded and fixed so that the front plate member 16 and the rear plate member 17 are formed.
A bolt insertion hole 18 formed at a position where the cylindrical metal collar 12 faces when the 10 is inserted from above, a bolt 14 inserted into the bolt insertion hole 18, and a nut 22 screwed to the bolt 14.
A headrest mounting device for a vehicle seat comprising: