JPH04141112A - Fitting structure of head rest in car seat - Google Patents

Abstract

PURPOSE:To increase strength of a fitting part without clearances in a bracket support, by providing insertion holes in which cylindrical metal collars are inserted and fixed in the vertical part of a support frame in order to fasten with bolts the hollow metal support frame welded with a head rest at the upper part of reclining seat. CONSTITUTION:A plurality of rear and front pierced holes 32 are formed every certain interval at the upper and lower parts of the vertical support 10 of a hollow metal support frame 8 composed of a horizontal support 9 and the vertical support 10 and a cylindrical metal collar 12 is inserted and fixed so that it is projected at the same level with the rear face of the vertical support 10 at the rear end and projected to farther front side than the front face of the vertical support 10 at the front end to make a protrusion 12a. The vertical support 10 is inserted from the upper side onto the bracket 13 fixed at the metal frame work 1 exposed to the upper part of the reclining sheet to align the cylindrical metal collar 12 with the bolt insertion holes 18 of the bracket 13 and fasten with the bolts at the nuts 22 fixed on the outer face of the bolt insertion hole 18 of the side member after insertion of the bolts 14. Since the fastening force of the bolts 14 is held by the cylindrical metal collar 12, the vertical support 10 is prevented from deforming and the clearance between the vertical support 10 and the bracket 13 is prevented from bringing about.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a headrest attachment device for a vehicle seat.

(Prior art) Regarding the mounting structure of a headrest on a vehicle seat,
Conventionally, headrests have generally had a double-leg structure, but there are various advantages to using a single-leg headrest. a bracket consisting of a front side plate member and a rear side plate member that are welded and fixed in a projecting state; a hollow metal support rod having a substantially square shape in front; a headrest skeleton frame welded to the horizontal support portion of the metal support rod; A front and rear through hole formed in the vertical support part of the metal support rod, and a bolt insertion hole formed at a position where the through hole faces when the vertical support part is inserted from above between the front side plate member and the rear side plate member. If the headrest mounting device for a vehicle seat is made up of a bolt inserted into the bolt insertion hole and a shaft threaded onto the bolt, it will have a one-leg structure.

(Problem to be Solved by the Invention) However, the above structure includes a hollow metal support rod having an approximately square shape from the front, a headrest frame frame welded to the horizontal support portion of the metal support rod, and a headrest skeleton frame welded to the horizontal support portion of the metal support rod. A front and rear through hole formed in the vertical support part, a bolt insertion hole formed at a position where the through hole faces when the vertical support part is inserted from above between the front side plate member and the rear side plate member, and the bolt insertion hole It consists of a bolt that is inserted into a hole and a nut that is screwed onto the bolt, so if you tighten the nut too hard to maintain its strength, the hollow vertical support part will get wet, so you can't tighten it very hard. issues arose.

(Object of the Invention) An object of the present invention is to ensure the strength of the mounting portion when adopting a cantilevered structure of the headrest.

(Means for Solving the Problems) Therefore, the present invention includes a metal frame 1 forming a backrest seat of a vehicle, and a front plate member welded and fixed to a position E of the frame 1 in a state protruding in the E direction. Bracket consisting of 16 and rear side plate member 17! 3, a hollow metal support rod 8 having a substantially ■-shaped front view, a headrest skeleton frame 5 welded to the horizontal support portion 9 of the metal support rod 8, and a vertical support portion 10 of the metal support rod 8. A front and rear through hole, a cylindrical metal collar η which is welded to the front and rear through hole so that one end is flush with the front and the other end projects to form a protrusion 12a, the front plate member 16 and the rear plate member. 17, a bolt insertion hole formed at a position where the cylindrical metal collar ν faces when the vertical support part 10 is inserted from the E direction, a bolt insertion hole 4 inserted into the bolt insertion hole 18, and the bolt 1.
This is an attachment device for a headrest in a vehicle seat, which comprises a nut 22 screwed into a nut 22.

(Embodiment) To explain an embodiment of the present invention with the drawings, reference numeral 1 denotes a backrest metal frame of a backrest seat of a vehicle seat, which includes an L section horizontal frame 2, a lower horizontal frame 3, and the lower horizontal frame. 2 and a side vertical frame 4.4 connecting the lower horizontal frame 3, it is formed into a square frame shape.

5 is a headrest skeleton frame of the headrest;
The backrest is provided so as to be located above the center of the left and right sides of the metal skeleton frame 1 . The headrest skeleton frame 5 is formed by bending a thin metal plate into an inverted U shape. 6 is a front plate of the headrest frame 5, and 7 is a rear plate of the headrest frame 5.

Reference numeral 8 denotes a hollow metal support rod fixed to the headrest skeleton frame 5; one end of the horizontal support part 9 fixed to the headrest skeleton frame 5 is bent downward, and a vertical support part 10 is fixed to the backrest metal skeleton frame 1; When viewed from the front, it is formed into an approximately ]-shaped shape.

The hollow metal support rod 8 is arranged between the horizontal support part 9 between the lower parts of the front plate 6 and the rear plate 7 of the headrest skeleton frame 5.
is inserted and fixed by welding.

11 is a welding hole.

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

The front and rear through holes! A cylindrical cylindrical metal collar is inserted and fixed in the front and rear direction. The cylindrical metal collar is welded and fixed so that its rear end is flush with the rear surface of the vertical support section 10 and its front end projects forward from the front surface of the vertical support section 10 to form a protrusion L2a.

A hole 4 for fixing the vertical support part 10 to the bracket 13 of the backrest metal skeleton frame 1 is inserted into the cylindrical metal collar member, and when the bolt 14 is strongly tightened, the vertical support part 10 from being crushed.

Therefore, the bracket 13 is a bent portion formed between either the left or right side of the upper horizontal frame 2 and the end of the side vertical frame 4! 5 so as to protrude upward.

The bracket 13 includes a front plate member 16 and a rear plate member 1.
7, each of which is manufactured separately by press working, and then both are welded and fixed to each other.

The front side plate member 16 and the rear side plate member 17 are bent at substantially intermediate portions in the vertical direction so as to be inclined toward the front as they go downward.

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

On the left and right sides of the bolt insertion hole 18, there are through holes 1 for weight reduction and for attaching a cover surrounding the outer periphery of the bracket 13.
form 9.

This is the front plate member! 6 and reinforcing ribs formed at desired positions on the rear plate member 17; 21, a vertical support portion 10 of the hollow metal support rod 8 formed on the inner surface of the rear plate member 17;
a positioning protrusion when inserting from above, η is a nut fixed to the outer surface of the bolt insertion hole 18 of the rear plate member 17, n is a bent portion formed on the side edge of the front plate member 16, 2
Reference numeral 4 denotes a bent portion formed on the side edge of the rear plate member 17, and the bent portion n and the bent portion 24 are overlapped and welded to each other to fix the front plate member 16 and the rear plate member 17 to form an integral body. It is formed on the bracket 13 of.

6 is a bent portion formed on the inner side edge of the front plate member 16;
3 is a bent portion formed on the inner side edge of the rear plate member 17 to prevent damage to the cushion material.

30 is a reinforcing member provided between the side vertical frames 4.4 of the childcare metal skeleton frame 1, and 31 is a horizontal spring provided between the side vertical frames 4.4.

(effect) Next, we will discuss the effect.

The present invention has the above-mentioned structure, in which the childcare metal frame 1 is formed by bending two steel members, and the spring 31 is attached between the side vertical frames 4 and 4 of the childcare metal frame 1.

Additionally, a front plate member 16 and a rear plate member 17 having bolt insertion holes and through holes 19 are separately formed by press processing, and the front plate member 16 and rear plate member 17 are combined to form the bracket 13. , the bracket eyes 3 are fixed to the bent portions 15 of the childcare metal skeleton frame 1.

A cushioning material is attached to the childcare metal skeleton frame 1 in this state, and the surface of the cushion member is covered with a skin to complete the assembly of the childcare seat.

Then, the hollow metal support rod 8 is formed by bending the hollow pipe into the shape of the front surface of the city, and is made up of a horizontal support part 9 and a vertical support part 10. A front and rear through hole is formed in the front and rear through hole so that the rear end thereof is flush with the rear surface of the vertical support part 10 and the front end thereof protrudes forward from the front surface of the vertical support part 10 to form a protruding part L2a. Insert and fix the cylindrical metal collar.

Next, a headrest skeleton frame 5 is formed by bending the thin metal plate into an inverted U-shape, and the hollow metal support rod 8 is placed between the front plate 6 and the lower part of the rear plate 7 of the headrest skeleton frame 5.
The headrest skeleton frame 5 and the hollow metal support rod 8 are welded and fixed by sandwiching the horizontal support part 9 of the headrest frame 5. A cushioning material is attached to the headrest skeleton frame 5, and the surface of the cushioning material is covered with a skin. Complete the assembly.

Then, the vertical support part 10 of the hollow metal support rod 8 is inserted from above into the bracket 13 fixed to the metal skeleton frame l exposed at the top of the childcare seat.
Align the cylindrical metal collars with the bolt insertion holes of the bracket 13, and insert each cylindrical metal collar from the front side.
4 is inserted into the nut 22 on the back side of the front side plate member 16 and tightened, and a cover is attached to the outer periphery of the vertical support part 10, thereby completing the installation of the headrest.

In this case, the cylindrical metal collar member has a cylindrical shape in the front-rear direction, and the front plate member 16 of the bracket 13
When the vertical support part 10 of the hollow metal support rod 8 is tightened to the bracket 13 by the pole 14,
Since the tightening force of the bolt 14 is supported by the cylindrical metal collar, even if the bolt 14 is strongly tightened, the vertical support part 10 is prevented from being swamped, and the vertical support part 1 of the hollow metal support rod 8 is
0 and the bracket 13, improving mounting accuracy and preventing rattling. - Since the bolts 14 can be tightened strongly, the vertical support part 10 of the hollow metal support rod 8 and the bracket The strength of the attachment part with 13 has been improved,
It also prevents rattling after installation.

Further, the front end of the cylindrical metal collar protrudes forward from the front surface of the vertical support part 10, and the rear end is welded and fixed to be located on the same plane as the rear edge of the vertical support part 10, so that the vertical support part The rear surface of 10 is the rear plate member 1 of bracket N3.
7, the load applied to the headrest can be supported by the surface of the rear plate member 17.

Therefore, the bracket) 13 is connected to the front plate member 16.
and the rear side plate member 17, each of which is manufactured by press working and then fixed by welding, so that even if the shape is complex with through holes 19 and reinforcing ribs 20, simple press working is possible. Since it can be manufactured using a thin metal plate, it can be made into a small and lightweight shape.

On the inner surface of the rear side plate member 17, a positioning protrusion 2L21 protruding inward is provided on the vertical support portion 1 of the hollow metal support rod 8.
Since it is formed with a horizontal width of 0, the vertical support portion 10
When inserted into the bracket 13 from above, the vertical support part! 0 can be guided down by the positioning projections 21.21 and easily matched with the bolt insertion holes 18.18 of the bracket 13 of the cylindrical metal collar 12.12 of the vertical support 10.

(Effect) Regarding the mounting structure of the headrest on the vehicle seat,
Conventionally, headrests in general have had a double-leg structure, but there are various advantages to using a single-leg structure. a bracket consisting of a front side plate member and a rear side plate member fixedly welded to each other; a hollow metal support rod having an approximately square shape in front; a headrest skeleton frame welded to the horizontal support portion of the metal support rod; a front and rear through hole formed in the vertical support part of the support rod; a bolt insertion hole formed at a position where the through hole faces when the vertical support part is inserted from above between the front plate member and the rear plate member; A headrest mounting device for a vehicle seat consisting of a bolt inserted into the bolt insertion hole and a nut screwed onto the bolt has a single-leg configuration.

However, the above structure includes a hollow metal support rod having a substantially square shape from the front, a frame frame welded to the horizontal support portion of the metal support rod, and a vertical support portion of the metal support rod. A front and rear through hole, a bolt insertion hole formed at a position where the through hole faces when the vertical support part is inserted from above between the front side plate member and the rear side plate member, and a bolt inserted into the bolt insertion hole. The nut consists of two nuts that are screwed together with the bolt, so if the nut is tightened strongly to maintain its strength, the hollow vertical support part will be soaked, creating another problem that it cannot be tightened very tightly. Ta.

However, the present invention includes a metal skeleton frame 1 forming a childcare seat of a vehicle, and a bracket 13 consisting of a front side plate member 16 and a rear side plate member 17 welded and fixed to an upper position of the metal skeleton frame 1 in an upwardly protruding state. , a hollow metal support rod 8 having a substantially ■-shaped front view, and a headrest skeleton frame 5 welded to the horizontal support portion 9 of the metal support rod 8.
, a front and rear through hole formed in the vertical support part IO of the metal support rod 8, and a cylinder welded and fixed to the front and rear through hole so that one end is flush with the other end and the other end protrudes to form a protrusion 12a. shaped metal collar, the front side plate member 16 and the rear side plate member 17
In between, there is a bolt insertion hole formed at a position where the cylindrical metal collar faces when the vertical support part 10 is inserted from above, a bolt insertion hole 4 inserted into the bolt insertion hole 18, and a screw threaded into the bolt 14. This is a mounting device for a headrest on a vehicle seat consisting of a mating nut 22, and since the headrest skeleton frame 5 is fixed to the hollow metal support rod 8, the structure is simpler than the conventional two-leg structure. It has a novel shape, and it is easy to attach the cushioning material and the skin surrounding the outer periphery of the cushioning material.

When the vertical support portion 10 of the hollow metal support rod 8 is inserted from above between the front plate member 16 and the rear plate member 17 of the bracket 13, the front plate member 16 and the rear plate member!
Since the cylindrical metal collar faces between the bolt insertion holes 18 of 7, when the bolt 14 inserted into the bolt insertion hole 18 is screwed into the nut 22, even if the bolt 14 is tightened strongly, the bracket 1
3 and the vertical support part 10 are not likely to be submerged.

C. Therefore, if the dress frame frame 5 is mounted in a cantilever structure using the hollow metal support rod 8, the strength of the mounting portion becomes unstable. strength can be ensured.

Second, since there is no risk that the bracket 13 and the vertical support part 10 may be submerged, the bracket 13 and the vertical support part 1
Since there is no need to make 0 large and thick, it can be made smaller and lighter.

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

This effect is achieved.

[Brief explanation of the drawing]

Figure 1 is a front view of the entire vehicle seat and headrest frame, Figure 2 is a front view of the headrest frame,
3 is a side view of the same, FIG. 4 is an enlarged sectional view of the main part, FIG. 5 is a bottom view of the same, FIG. 6 is an assembled perspective view of the bracket, and FIG. 7 is a sectional view taken along line A-A in FIG. 6. @ Figure 8 is a sectional view taken along line BB in Figure 6, Figure 9 is a sectional view taken along line CC in Figure 6, Figure 10 is a front view of the bracket in its attached state, and Figure 11 is a side view of the same. Explanation of symbols 1...Childcare metal skeleton frame, 2...Top horizontal frame, 3
...Lower tank frame, 4. Side vertical frame, 5. Headrest frame, 6. Front plate, 7. Rear plate, 8.
...Hollow metal support rod, 9...Horizontal support part, 10...
Vertical support part, 11... Welding hole, retainer... Cylindrical metal collar, 12a... Projection part, 13... Bracket, 1
4...Bolt, 15...Bent part, 16...Front side plate member, 17...Rear side plate member, 18...Bolt insertion hole, L9...Through hole, redundancy...For reinforcement Rib 21...positioning protrusion, η...nut, n, 24...bending portion, δ
, 26...Bending portion, (9)...Reinforcing member, 31...
・Spring, seat... Front and rear through holes.

Claims (1)

[Claims] A metal skeleton frame 1 forming a backrest seat of a vehicle, a bracket 13 consisting of a front side plate member 16 and a rear side plate member 17 welded to the upper part of the skeleton frame 1 so as to protrude upward, and a front face shape approximately A hollow metal support rod 8 having a shape, a headrest skeleton frame 5 welded to the horizontal support portion 9 of the metal support rod 8, and a front and rear 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-holes 32 and the other end protrudes into the protruding portion 12.
Formed at a position where the cylindrical metal collar 12 faces when the vertical support portion 10 is inserted from above between the cylindrical metal collar 12 welded and fixed as shown in FIG. the bolt insertion hole 18, the bolt 14 inserted into the bolt insertion hole 18, and the bolt 1
4. A mounting device for a headrest on a vehicle seat, which comprises a nut 22 screwed into a nut 22.