JPH0984653A - Head rest frame and production of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the shape of a core, to simplify a production assembly process and to reduce costs. SOLUTION: The horizontal shaft part 5 of a pillar 3 is held between front and rear metallic position adjusting members 14. The front and rear position adjusting members 14 are fitted while embedding one part or the entire part in a core 2. Concerning a head rest frame, a window hole part 7 for protruding a leg part 4 of the pillar 3 on a lower surface 6 of the core 2 and the turn of the core 2 is regulated by abutting the leg part 4 to the front and rear inner peripheral edges of the window hole 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest frame and a method of manufacturing the headrest frame.

[0002]

2. Description of the Related Art In the publicly known Japanese Patent Application Laid-Open No. 7-177950, a pair of left and right leg portions are connected at their upper portions by a horizontal shaft portion, and the left and right legs are placed at a predetermined distance from the horizontal shaft portion. A pillar configured by fixing a rotation center member is set in a mold and resin-molded, a part of the horizontal shaft portion is exposed from the core body, and a metal for stopping rotation of the core body at the exposed portion. It describes a method of manufacturing a headrest frame to which a front-back position adjusting member made of steel is attached.

[0003]

In the above-mentioned known example, since the horizontal shaft portion is brought into contact with the inner peripheral surface of the recess formed in the core body to regulate the rotation, there is a problem that the shape of the core body becomes complicated. is there. Further, since the front-rear position adjusting member must be brought into sliding contact with the horizontal shaft portion, a part of the horizontal shaft portion is exposed from the core body, and the front-rear position adjusting member is mounted there, which is troublesome to mount. That is, since a part of the horizontal axis portion is exposed from the core, there is a problem that the shape of the core becomes complicated. In the present invention, the structure for restricting the rotation of the core body is devised to simplify the shape of the core body, and the mounting of the front-back position adjusting member is devised to omit the mounting step.

[0004]

It is an object of the present invention to simplify the shape of the core body, simplify the manufacturing and assembling process, and reduce the cost.

[0005]

According to the present invention, a horizontal shaft portion 5 connecting the upper portions of a pair of left and right leg portions 4 of a pillar 3 is rotatably supported from the front and rear sides by a holding portion 13 of a synthetic resin core body 2. In a structure in which the frame 1 is sandwiched, a window hole portion 7 through which a leg portion 4 of a pillar 3 projects is formed on a lower surface 6 of the core body 2, and the leg portion 4 is formed in the front and rear of the window hole portion 7. This is a headrest frame which comes into contact with the peripheral edge to regulate the rotation of the core body 2. The present invention is a headrest frame in which a front and rear position adjusting member 14 made of metal for slidingly contacting the outer peripheral surface of the horizontal shaft portion 5 to stop the rotation of the core 2 at an arbitrary position is attached to the core 2. Is. In the present invention, the horizontal shaft portion 5 that connects the upper portions of the pair of left and right leg portions 4 of the pillar 3 is
In the frame 1 constructed by rotatably holding the synthetic resin core body 2 from the front and rear sides by the sandwiching portion 13, the core body 2 is slidably contacted with the horizontal shaft portion 5 to freely rotate the core body 2. The front-rear position adjusting member 14 made of metal to be stopped at a position is a headrest frame in which a part or all of the front-rear position adjusting member 14 is embedded in the core body 2 and attached. According to the present invention, the front-rear position adjusting member 14 is formed by the rear member 15 and the front member 16 that hold the horizontal shaft portion 5 from the front and rear, and the rear member 15 and the front member 16 are partially or entirely formed. The headrest frame is embedded so as to be sandwiched between the front and rear sides by the sandwiching portion 13 of the core body 2. According to the present invention, an embedded engaging portion 23 that is embedded in the core body 2 and engages with either or both of the rear member 15 and the front member 16 of the front-back position adjusting member 14.
The headrest frame is formed with. According to the present invention, a pair of left and right leg portions 4 are connected to each other by a horizontal shaft portion 5 to form a metal pillar 3, and the horizontal shaft portion 5 has a metal rear member 15 of a front-back position adjusting member 14. And the front side member 16 is attached so as to be held in sliding contact from the front and back, and the pillar 3 with the front and rear position adjusting member 14 attached is set in a mold, and part or all of the rear side member 15 and the front side member 16 are This is a method of manufacturing a headrest frame that is resin-molded so as to be embedded in the core body 2.

[0006]

Embodiments of the present invention will be described with reference to the drawings.
Is a frame of the headrest, and a synthetic resin core body 2
The pillar 3 is attached to the structure. The pillar 3 includes a pair of left and right leg portions 4 which are inserted and fixed to a supporting member (not shown) provided on the seat so that the height position can be adjusted, and a lateral horizontal shaft portion 5 connecting the upper portions of the leg portions 4. Configure. The core body 2
Forms a window hole portion 7 on the lower surface 6 from which the leg portion 4 of the pillar 3 projects. The front wall 8 and the rear wall 9 of the core body 2 form a hollow portion 10 between the front wall 8 and the rear wall 9. The central portions of the front wall 8 and the rear wall 9 are formed in the front wall recess 11 and the rear wall recess 12 so as to hold the horizontal shaft portion 5 back and forth, and the bottoms of the front wall recess 11 and the rear wall recess 12 are formed. The holding portion 13 formed on the horizontal shaft portion 5
Make a close contact with the outer periphery of. Therefore, the core body 2 is rotatable in the front-rear direction about the horizontal shaft portion 5 and serves as a so-called swing headrest.

A front and rear position adjusting member 14 is provided in each of the front wall recess 11 and the rear wall recess 12. The front-rear position adjusting member 14 sandwiches the horizontal shaft portion 5 from the front and back by the rear member 15 and the front member 16 made of metal, and the front member 1 in this state.
6 and the rear member 15 are fixed by a stopper 17. The rear member 15 is formed in a flat plate shape. If the rear member 15 is made of spring steel, the horizontal shaft portion 5 can be clamped with a stable torque. The front side member 16 is formed with an arcuate slidable contact portion 18 which is in contact with the outer periphery of the horizontal shaft portion 5 at the upper and lower middle thereof, and an insertion hole through which the stopper 17 is inserted into an upper plate portion 19 above the slidable contact portion 18. Form 20. A bulging portion 22 is provided at the lower part of the sliding contact portion 18 and is pressed rearward to form an insertion groove 21 in the vertical direction.

When the lower portion of the rear member 15 is inserted into the insertion groove 21 with the horizontal shaft portion 5 sandwiched between the upper plate portion 19 and the bulging portion 22, the upper portion of the rear member 15 and the upper plate portion 19 are slightly The front member 16 and the upper plate portion 19 are configured to be separated from each other.
When is fixed by the stopper 17, the assembly is completed. Both left and right side portions of the front member 16 are made to project to the front side and then to the lateral side to form an embedded engaging portion 23 located in a direction intersecting with the rotation direction of the core body 2, and the embedded engaging portion 23 is the core. Embedded in the body 2 and engaged. In this respect, the rear side member 15 and the front side member 16 are sandwiched between the front wall recesses 13 and the rear wall recesses 12 corresponding to the front wall 8 and the rear wall 9, respectively.
It is sandwiched and embedded from the front and back sides.

However, the rear member 15 and the front member 16 are attached to the horizontal shaft portion 5, the pillar 3 in this state is set in a mold, and the pillar 3 is formed by blow molding with a synthetic resin.
The core body 2 can be attached to the. That is, the pillar 3 and the front-back position adjusting member 14 are attached to the core body 2 by blow molding a resin.
Rotates with respect to the horizontal shaft portion 5 of the pillar 3 together with the core body 2, and the core body 2 is rotated by the frictional resistance between the horizontal shaft portion 5 and the front-back position adjusting member 14.
Stop the rotation of. Further, in this embodiment, the hollow portion 10
Although the hollow portion 10 is formed, the position and shape of the hollow portion 10 are arbitrary, and the hollow portion 10 may be omitted.

[0010]

Next, the operation will be described. Since the present invention has the above-mentioned configuration, the pillar 3 including the leg portion 4 and the horizontal shaft portion 5 is manufactured in advance, the front side member 16 is applied to the horizontal shaft portion 5, and the lower portion of the rear side member 15 is inserted into the insertion groove 21. After being inserted and the upper portion of the rear member 15 is fixed to the front member 16 by the stopper 17, the pillar 3
Then, the attachment of the front-back position adjusting member 14 is completed.

In this case, the upper plate portion 19 and the bulging portion 22 are
When the lower portion of the rear member 15 is inserted into the insertion groove 21 with the horizontal shaft portion 5 interposed, the upper portion of the rear member 15 and the upper plate portion 19 are configured to be slightly apart from each other. The assembly of 14 can be done with only one stop 17, which makes it easy to get through. Next, the pillar 3 in this state is set in a mold and blow-molded with a synthetic resin, the hollow core body 2 is attached to the pillar 3, and the manufacturing and assembly of the frame 1 are completed.

In this case, the horizontal axis portion 5 of the pillar 3 is the core 2
Front wall recesses 11 formed on the left and right sides of the front wall 8 and the rear wall 9
Since the pillar 3 is held from the front and back by the holding portion 13 of the rear wall recess 12, the pillar 3 is fixed in position except that the pillar 3 rotates with respect to the core 2. Further, the front-back position adjusting member 14
The front side member 16 and the rear side member 15 of the
And the front wall recess 11 and the rear wall recess 1 formed in the rear wall 9.
Since it is embedded by being held by the two holding portions 13 from the front and rear, the front and rear position adjusting member 14 is fixed to the core body 2 in the front and rear direction.

The front member 1 of the front-back position adjusting member 14
The upper and lower middle portions of 6 are formed in an arcuate sliding contact portion 18 that protrudes to the front side, so that the horizontal shaft portions 5 of the front and rear position adjusting members 14 and 3 are prevented from being displaced vertically with respect to the core body 2. To do. Further, the embedded engaging portions 2 intersecting with the rotating direction of the core body 2 are formed on the left and right side portions of the front member 16, and the embedded engaging portions 23 are formed.
Since the periphery of the core body 2 is surrounded by the sandwiching portion 13, the core body 2 and the rear side member 15 and the front side member 16 of the front-back position adjusting member 14 are more firmly integrated.

That is, the rear member 1 of the front-back position adjusting member 14
5 and the front member 16 are embedded in a synthetic resin. Therefore, it is not necessary to assemble only the front-back position adjusting member 14 to the core body 2 again, which facilitates the assembly. Then, the horizontal axis portion 5 of the pillar 3 is only held from the front and back by the holding portions 13 of the front wall concave portion 11 and the rear wall concave portion 12 formed in the front wall 8 and the rear wall 9 of the core body 2. When the upper part of the core body 2 is pushed back and forth, the core body 2 rotates back and forth around the horizontal shaft portion 5, and when released at an arbitrary position, the rotation stops.

In this case, the horizontal axis portion 5 is not limited to the core body 2,
Since the front and rear position adjusting members 14 that rotate together with the core body 2 are sandwiched and are in sliding contact with each other, the core body 2 is set to an arbitrary rotation stop position by the frictional resistance between the horizontal member 5 and the rear side member 15 and the front side member 16. Hold. And the front-back position adjusting member 14
Since the rear side member 15 and the front side member 16 are formed in the above-described shapes, the front, rear, left, right, and upper portions are embedded in the core body 2, so that the load for the rotation of the core body 2 is adjusted in the front and rear position. The member 14 supports.

Next, when the core body 2 is rotated back and forth to a predetermined range, the leg portion 4 of the pillar 3 is brought into contact with the front edge or the rear edge of the window hole portion 7 of the core body 2, so that the core body 2 is rotated. Is regulated. Therefore, no special stopper mechanism is required.

[0017]

[Effects] According to the present invention, the lateral shaft portion 5 connecting the upper portions of the pair of left and right leg portions 4 of the pillar 3 to the holding portion 13 of the synthetic resin core body 2 is provided.
In the structure in which the frame 1 is configured to be rotatably held from the front and rear sides by the above, a window hole portion 7 through which the leg portion 4 of the pillar 3 projects is formed in the lower surface 6 of the core body 2, and the leg portion 4 is Since the headrest frame is configured so as to regulate the rotation of the core body 2 by contacting with the front and rear inner peripheral edges of the window hole portion 7, the rotatable core body 2 is assembled to the pillar 3 by blow molding. When the core body 2 is rotated back and forth to a predetermined range even if a stopper for restricting the rotation of the core body is not separately provided, the leg portions are formed on the front and rear inner peripheral edges of the window hole portion 7 of the core body 2. Four
Contact with each other to regulate the rotation of the core body 2, so that the rotation of the core body 2 is regulated, and the leg portions 4 abut on the front and rear inner peripheral edges of the window hole portion 7 so that the core body 2 is prevented. Since the rotation of the core 2 is restricted, the shape of the core body 2 can be simplified, the manufacturing cost of the mold can be reduced, and the cost can be reduced. Further, according to the present invention, a headrest frame having a metal front-rear position adjusting member 14 attached to the core body 2 so as to slidably contact the outer peripheral surface of the horizontal shaft portion 5 to stop the rotation of the core body 2 at an arbitrary position. Therefore, the rotation of the core body 2 is surely stopped. Further, according to the present invention, the horizontal shaft portion 5 connecting the upper portions of the pair of left and right leg portions 4 of the pillar 3 is rotatably held from the front and rear sides by the holding portion 13 of the synthetic resin core body 2 to form the frame 1. In this case, the front and rear position adjusting member 14 made of metal, which is slidably contacted with the horizontal shaft portion 5 on the core body 2 to stop the rotation of the core body 2 at an arbitrary position.
Is a headrest frame in which a part or all of the front-back position adjusting member 14 is embedded in the core body 2 and attached,
The front-rear position adjusting member 14 is integrally attached to the core body 2 by blow molding together with the pillar 3, so that the attaching step can be omitted. Further, in the present invention, the front-rear position adjusting member 14 is formed by a rear member 15 and a front member 16 that hold the horizontal shaft portion 5 from the front and rear, and the rear member 15 and the front member 16 are partially or partially formed. All of the core body 2
Since the headrest frame is embedded so as to be sandwiched by the holding portion 13 from the front and rear sides, the rear member 15 and the front member 1 of the front and rear position adjusting member 14 are attached to the horizontal shaft portion 5.
6 can be set in a mold in a state of being held in sliding contact from the front and rear, and can be integrally attached to the core body 2 by blow molding the front and rear position adjusting member 14 together with the pillar 3. The effect that the mounting process can be omitted is achieved. The present invention also provides the front-back position adjusting member 1
4 is a headrest frame in which one or both of the rear side member 15 and the front side member 16 have embedded engagement portions 23 that are embedded in and engaged with the core body 2. Is firmly attached to the core body 2 and has an effect of reliably supporting the rotation of the core body 2 and the load applied to the core body 2. Further, according to the present invention, upper portions of a pair of left and right leg portions 4 are connected by a horizontal shaft portion 5 to form a metal pillar 3, and the horizontal shaft portion 5 has a metal rear side of the front-back position adjusting member 14. The member 15 and the front member 16 are attached so as to be held in sliding contact with each other from the front and rear, and the pillar 3 with the front and rear position adjusting member 14 attached is set in a mold, and a part or all of the rear member 15 and the front member 16 are set. Since the headrest frame is manufactured by resin molding so as to be embedded in the core body 2, it can be integrally mounted on the core body 2 by blow molding the front and rear position adjusting member 14 together with the pillar 3. Has the effect of omitting.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view.

FIG. 2 is a front view.

FIG. 3 is a sectional view.

FIG. 4 is a sectional view.

FIG. 5 is a sectional view.

[Explanation of symbols]

1 ... Frame, 2 ... Core, 3 ... Pillar, 4 ... Leg, 5 ...
Horizontal axis portion, 6 ... lower surface, 7 ... window hole portion, 8 ... front wall, 9 ... rear wall,
10 ... Hollow part, 11 ... Front wall recess, 12 ... Rear wall recess, 13
... bottom part, 14 ... front-back position adjusting member, 15 ... rear member, 1
6 ... Front member, 17 ... Stopper, 18 ... Sliding contact part, 19 ... Upper plate part, 20 ... Insertion hole, 21 ... Insertion groove, 22 ... Swelling part, 2
3 ... Buried engagement part.

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[Procedure amendment]

[Submission date] November 8, 1995

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

[Fig. 2]

[Figure 3]

FIG. 4

[Figure 5]

Claims (6)

[Claims] 1. A frame 1 is constructed by rotatably holding a lateral shaft portion 5 connecting upper portions of a pair of left and right leg portions 4 of a pillar 3 from a front and rear side by a holding portion 13 of a synthetic resin core body 2. On the lower surface 6 of the core body 2, a window hole portion 7 through which the leg portion 4 of the pillar 3 projects is formed, and the leg portion 4 is brought into contact with the front and rear inner peripheral edges of the window hole portion 7 to form the core body. A headrest frame that regulates the rotation of 2. 2. The metal front-rear position adjusting member 14 according to claim 1, wherein the core body 2 is slidably contacted with the outer peripheral surface of the horizontal shaft portion 5 to stop the rotation of the core body 2 at an arbitrary position. Headrest frame. 3. A frame (1) is constructed by holding a horizontal shaft portion (5) connecting upper portions of a pair of left and right leg portions (4) of a pillar (3) by a holding portion (13) of a synthetic resin core body (2) rotatably from the front and rear sides. In this case, a metal front-rear position adjusting member 14 for slidingly contacting the horizontal shaft portion 5 with the core body 2 to stop the rotation of the core body 2 at an arbitrary position is provided. A headrest frame that is embedded in and attached to the core body 2. 4. The rear member 15 according to claim 3, wherein the front-rear position adjusting member 14 holds the horizontal shaft portion 5 from the front and rear.
A headrest frame formed by the front member 16 and having the rear member 15 and the front member 16 embedded in such a manner that a part or all of the rear member 15 and the front member 16 are sandwiched between the front and rear sides by the sandwiching portion 13 of the core body 2. 5. The embedded engagement portion according to claim 4, wherein one or both of the rear side member 15 and the front side member 16 of the front-back position adjusting member 14 is embedded in the core body 2 and engages with the core body 2. Headrest frame that formed 23. 6. A pillar 3 made of metal is formed by connecting upper portions of a pair of left and right legs 4 with a horizontal shaft portion 5, and a metal rear member of a front-back position adjusting member 14 is formed on the horizontal shaft portion 5. 15 and the front side member 16 are attached so as to be held in sliding contact from the front and rear, and the pillar 3 with the front and rear position adjusting member 14 attached is set in a mold, and the rear side member 15 and the front side member 16 are partially or entirely attached. A method of manufacturing a headrest frame, which is resin-molded so as to be embedded in the core body 2.