JPH09271425A - Stay for head rest and head rest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily house a tray from a stay inserting hole formed on the bottom of cover of a pillow part and ro easily form a head rest. SOLUTION: Concerning the stay for head rest with which leg parts 14 are extended downward from both the ends of a laterally extended upper end part 13 and a reinforcing member 16 is bridged between the upper parts of the leg parts, engage parts 15 and 17 are formed on the mutually confronted side faces of the leg parts and at both the ends of the reinforcing member, and the reinforcing member is fixed to the leg parts by engaging the leg parts with the reinforcing member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a headrest stay and a headrest using the stay.

[0002]

2. Description of the Related Art A headrest is attached to a seat back of an automobile to protect an occupant's head in a collision. The headrest is composed of a pillow portion in which foam is covered with a skin, and a substantially U-shaped stay formed with legs extending downward from both ends of an upper end portion extending in the lateral direction, and an upper portion of the stay is a pillow. Many of them have a structure in which the legs are embedded in the part and the legs protrude from the stay insertion hole on the bottom surface of the skin. As the stay, a metal hollow pipe or a solid rod bent is used.

The headrest is molded as follows. First, from one of the two stay insertion holes formed on the bottom surface of the bag-shaped outer skin made of plastic or the like, insert one of the legs of the stay into the outer skin and project it from the other stay insertion hole to the outside of the outer skin. The top of the stay is housed in the epidermis.
Then, a foaming raw material such as a polyurethane raw material is injected into the epidermis from the foaming raw material injection port formed on the bottom surface of the epidermis,
A headrest is obtained by foaming a foam.

By the way, some of the headrests require reinforcement near the bottom of the pillow portion. For example,
In a so-called perforated headrest with a hole in the center of the pillow, the upper end of the stay and the upper part of the leg are located above and to the left and right of the hole in the pillow, and there is a stay at the bottom of the hole. Since it does not occur, elastic deformation becomes large in the lower part of the hole, that is, near the bottom of the pillow part. As a result, it has been necessary to reinforce the vicinity of the bottom of the pillow to obtain a predetermined cushioning property. Further, even if the headrest is not perforated, depending on the shape of the pillow portion, elastic deformation near the bottom portion of the pillow portion becomes large, and reinforcement is necessary in some cases.

Therefore, in the prior art, as shown in FIG. 11, a stay 44 is used in which a rod-shaped reinforcing member 42 extending in the lateral direction is bridged over the upper portion of the leg portion 41 and fixed by welding. However, in the stay 44 having the reinforcing member 42, the stay 44 is removed from the stay insertion hole 46 on the bottom surface of the outer skin 45 when forming the perforated headrest.
Even if an attempt was made to accommodate the inside of the No. 5, it could not be accommodated because the reinforcing member 42 interfered. Therefore, the bag-shaped skin that accommodates the upper portion of the stay 44 must be molded in advance by blow molding or the like, and the molding of the skin becomes complicated or the material of the skin is limited, so that the pillow portion with the desired feel is formed. There were problems such as not being able to obtain it. Reference numeral 47 is a foam, 48 is a foaming material injection port, and 49 is a welded portion at both ends of the reinforcing member 42.

Further, even in a normal headrest which is not perforated, when the stay having the reinforcing member is used, the reinforcing member interferes and the stay cannot be accommodated in the outer skin from the stay insertion hole on the bottom surface of the outer skin. . Therefore, it was necessary to form a large slit in the bottom surface of the bag-shaped epidermis and to accommodate the upper part of the stay in the epidermis from the slit. However, in that case, when the foaming raw material is injected into the bag-shaped skin and the foam is foam-molded thereafter, the foaming raw material leaks from the slits to stain the outer surface of the skin, or the foam has a lack of wall. There is a problem that such inconvenience is likely to occur.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and can easily accommodate a stay through a stay insertion hole formed in the bottom surface of the bag-like skin of the pillow portion, thereby forming the headrest. The present invention provides a headrest stay and a headrest using the stay, which facilitates the operation.

[0008]

An invention relating to a stay of a headrest is a stay of a headrest in which a leg portion extends downward from both ends of an upper end portion extending in a lateral direction, and a reinforcing member is bridged between the upper portions of the leg portions. Engaging portions are formed on side surfaces of the leg portion that face each other and both ends of the reinforcing member, and the reinforcing member is fixed to the leg portion by the engagement of the leg portion and the reinforcing member.

In the invention relating to the headrest, the legs of the headrest extend downward from both ends of the laterally extending upper end, and the reinforcing member is bridged between the upper portions of the legs, and the stay of the headrest has a stay insertion hole. And a pillow portion in which a foam is formed in a bag-shaped skin having a foaming material injection port formed therein. In the headrest in which the leg portion of the stay is protruding from the hole, engaging portions are formed on the mutually opposing side surfaces of the leg portion of the stay and both ends of the reinforcing member, and the reinforcing member is formed by the engagement of the leg portion and the reinforcing member. It is characterized by being fixed to the legs.

In the invention of the stay of the headrest and the headrest, the reinforcing member of the stay is fixed to the leg portion by engaging the engaging portions at both ends thereof with the engaging portions of the leg portions of the stay, and fixed by welding. It has not been. Therefore, at the time of molding the headrest, the stay before attaching the reinforcing member is housed in the skin through the stay insertion hole on the bottom surface of the skin, while for the reinforcing member, the foam raw material injection port formed on the bottom surface of the skin is used. It can be accommodated in the outer skin, and the reinforcing member can be engaged with the engaging portion of the leg in the outer skin to be fixed to the leg. Therefore, the stay can be accommodated in the epidermis without being disturbed by the reinforcing member. Moreover, since the outer skin of the pillow portion is usually made of a flexible material such as fabric or plastic and easily deformed, the upper portion of the stay or the reinforcing member in the outer skin can be grasped from the outer surface of the outer skin and engaged with each other. Work is also easy.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of an example of a headrest stay of the present invention and an example of a headrest using the same, and FIGS. 2 to 6 are views showing a case where the upper part of the stay is housed in the epidermis of the pillow portion in the embodiment. 2, in which FIG. 2 is a perspective view showing the stay main body when stored, FIG. 3 is a cross-sectional view showing the reinforcement member stored, FIG. 4 is a cross-sectional view showing the reinforcement member engaged, and FIG. Sectional drawing, FIG. 6 is an enlarged sectional view of the engaging portion. 7 to 9 are views showing another embodiment of the present invention, in which FIG. 7 is a sectional view showing another embodiment, FIG. 8 is a sectional view showing another embodiment, and FIG. 9 is the same. FIG. 10 is a perspective view showing a part of a leg portion and a reinforcing member of the embodiment, and FIG. 10 is a perspective view showing another embodiment.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a sectional view showing a headrest using an example of the present invention. The headrest 10 shown in this figure is of a type called a perforated headrest, and comprises a stay 11 and a pillow portion 21. The stay 11 is composed of a stay body 12 and a reinforcing member 16, as better understood from FIG. 2.

The stay main body 12 is formed by bending a metal hollow pipe or a solid rod into a substantially U-shape and extends downward from both ends of an upper end portion 13 extending in the lateral direction (refer to a state in use, as shown in FIG. 2). In the drawing, the leg portions 14 are formed, and the engaging portions 15 are formed on the opposite side surfaces of the both leg portions 14 at the upper portions separated from the upper end portions 13 by a predetermined distance. . The engagement portion 15 is for fixing the reinforcing member 16, and in this embodiment, is formed of a concave groove formed in a straight line in the direction orthogonal to the leg portion 14. In addition,
The distance between the engaging portion 15 and the upper end portion 13 of the stay is equal to the pillow portion 2.
The upper end portion 13 of the stay and the engaging portion 1 above and below the central hole 22
5 is positioned. Reference numeral 19 is a notch formed in the side surface of the leg portion 14 for adjusting the height of the pillow portion 21, and engages with a clip provided on the seat back to fix the pillow portion 21 at a desired height. is there.

The reinforcing member 16 is composed of a metal hollow pipe or a solid rod, and has engaging portions 17 formed at both ends thereof, and the engaging portions 17 are used as the engaging portions 1 of the leg portion 14.
It is fixed to the upper part of the leg portion 14 by engaging with 5.

The reinforcing member 16 of this embodiment flatly crushes both ends of a metal hollow pipe having a length 7 mm longer than the facing surface distance a of both legs 14 of the stay main body 12 to flatly squeeze the groove-like engagement of the legs 14. The engaging portion 17 that engages with the joining portion 15 is formed. Further, the engaging portion 17 is formed with a fork-holding claw 18 that is notched at the tip and has a bifurcated shape. The sandwiching claw 18 serves as the engaging portion 15 of the leg portion 14.
When the engaging portion 17 of the reinforcing member 16 is engaged with the leg portion 1,
The outer surface of No. 4 is sandwiched so that the reinforcing member 16 does not shift even if a force in the front-back direction is applied to the reinforcing member 16. Instead of the sandwiching claw 18, a protrusion is formed at the tip of the engaging portion 17 of the reinforcing member 16, and a recess such as a hole is formed in the engaging portion 15 of the leg portion 14 so that the protrusion engages without displacement. You may.

The pillow portion 21 of the headrest is composed of a bag-like outer skin 23 having a ring shape with a central hole 22 penetrating in the front and rear direction and a foam 26 filled in the outer skin 23. The upper portion of the stay 11 is embedded in the foam 26 so as to surround the central hole 22.

The outer skin 23 is made of a single fabric, or its back side is lined with a plastic film or the like, or a plastic sheet or the like is formed into a ring-shaped bag by sewing or the like.
2 has two stay insertion holes 24 formed in conformity with the intervals of the leg portions 14, and a foaming material injection port 25 formed in a slit shape therebetween. The stay insertion hole 24 is for accommodating the upper portion of the stay 11 in the outer skin 23 when the headrest 10 is molded, and the foam raw material inlet 25 is provided with the foam raw material for the foam 26. It is for injecting into the skin 23. The foaming material injection port 25 may be hidden by another member after the foaming material is injected or after the foam 26 is formed.

The foam 26 is for providing cushioning to the pillow portion 21, and is made of elastic foam such as polyurethane foam.

Next, the molding of the headrest 10 using the stay 11 of the headrest will be described. First, as shown in FIG. 2, using the stay main body 12 before attachment of the reinforcing member 16, one of the legs 14a of the stay main body 12 is cut from one of the two stay insertion holes 24 formed in the bottom surface of the outer skin 23 to the outer skin. Insert into 23. Then, the one leg 14a is passed over the central hole 22 in the skin 23,
As shown in FIG. 3, it is made to project outside the outer skin 23 from the other stay insertion hole 24b. As a result, the engagement portion 15 of the leg portion 14 of the stay main body 12 is positioned below the central hole portion 23 in the outer skin 23.

Next, the reinforcing member 16 is inserted from the foaming material injection port 25 on the bottom surface of the skin 23 into the skin 23 below the central hole 22. Then, as shown in FIGS. 4 and 5, the engaging portions 17 at both ends of the reinforcing member 16 are connected to the engaging portions 15 of the leg portion 14.
To be engaged. At that time, as shown in FIG. 2, since the length between both ends of the reinforcing member 16 is set to be a predetermined amount longer than the facing surface distance a of the leg portion 14 of the stay, as shown by the chain line in FIG. In addition, when the leg portion 14 of the stay is once spread outward by the reinforcing member 16 and the engaging portion 17 of the reinforcing member 16 engages with the engaging portion 15 of the leg portion 14, the both leg portions 14 return to their original positions. Return. This ensures engagement between the reinforcing member 16 and the leg portion 14. Further, as is apparent from FIG. 6 showing the engagement portion in an enlarged manner, the leg portion 14 and the reinforcing member 1
At the engaging portion 6 of FIG. 6, the holding claw 18 formed at the tip of the engaging portion 17 of the reinforcing member 16 sandwiches the outer surface of the leg portion 14, so that the reinforcing member 16 does not shift back and forth.

Thereafter, a foaming raw material is injected from a foaming raw material inlet 25 on the bottom surface of the skin 23 to foam-form the foam 26. As a result, the headrest 10 shown in FIG.
Is obtained.

Although the reinforcing member 16 in the above embodiment has a straight shape, it may have a curved shape. For example,
The reinforcing member 16a shown in FIG. 7 may be curved so as to bulge downward. According to the example of FIG. 7, the reinforcing member 16a can be arranged along both sides from the lower side of the central hole 22 of the pillow portion, and the reinforcing member 16a is reinforced not only between the legs 14a but also along the lower side of the central hole 22. You can also In particular, depending on the shape of the hole 22 and the like, it may be required to arrange the reinforcing member 16a along the lower edge 22a of the hole 22,
In that case, it is preferable to use a reinforcing member that is curved according to the shape of the hole 22. Further, by using a reinforcing member curved in an appropriate shape, the reinforcing member can be present in a predetermined portion in the bottom portion of the pillow portion, so that the cushioning property at the desired position of the bottom portion of the pillow portion is optimized. You can Reference numeral 17a is an engaging portion at both ends of the reinforcing member.

Further, the reinforcing members 16 and 1 of the above-mentioned respective embodiments
In 6a, the engaging portions 17 and 17a at both ends are in a direction orthogonal to the leg portion 14 of the stay, but in the vertical direction (longitudinal direction of the leg portion) parallel to the leg portion of the stay. It may be along. 8 and 9 show an example thereof, and the reinforcing member 16b has an engaging portion 17b which is formed by crushing both ends of the reinforcing member 16b from the lateral direction and extends in the vertical direction.
Further, on the leg portion 14 of the stay, a concave groove-shaped engaging portion 15b along the longitudinal direction of the leg portion 14 is formed with a size substantially equal to the vertical length and thickness of the engaging portion 17b of the reinforcing member 16b. There is. As a result, after the engaging portion 17b of the reinforcing member 16b is fitted into the concave groove engaging concave portion 15b of the leg portion 14, the reinforcing member 16b is prevented from coming off in the vertical direction and the front-back direction.

The stay and headrest of the headrest of the present invention are not limited to the perforated headrest type, but are also applicable to ordinary headrests, and are not limited to those for front seats, but those for rear seats. Also applies to

FIG. 10 shows a stay 31 used for a headrest for a rear seat, which comprises a stay main body 34 having an upper end 32 and legs 33, and a reinforcing member 35. Engaging portions 36 similar to those in the above-described embodiment are formed on the upper portions of the leg portions 33, while engaging portions 37 similar to those in the above-described embodiment are formed at both ends of the reinforcing member 35, and both engaging portions are formed. The reinforcing member 35 is fixed to the upper portion of the leg portion 33 by the engagement of the portions 36 and 37. The upper portion of the stay 31 is embedded in the pillow portion 38 of the headrest shown by the chain line. The pillow 38
Is composed of a foam and a bag-like skin as in the above-mentioned embodiment, and a stay insertion hole and a foaming material injection port are formed on the bottom surface of the skin. Reference numeral 39 is a notch formed in the leg portion 33 for adjusting the height of the pillow portion.

In the headrest for a rear seat using the stay 31, the bottom of the pillow portion 38 is reinforced by the reinforcing member 35 when the height of the pillow portion 38 is adjusted by holding the bottom portion of the pillow portion 38. Since the deformation of the bottom of the pillow portion 38 is small and the deformation prevents the hand from slipping, the height can be adjusted reliably.

[0027]

As shown and described above, in the stay of the headrest of the present invention and the headrest using the stay, the stay before attachment of the reinforcing member is formed into a pillow when the perforated headrest or a normal headrest is molded. It can be accommodated in the skin through the stay insertion hole on the bottom of the bag-shaped skin of the portion, and then the reinforcing member can be engaged and fixed to the leg portion of the stay in the skin. Therefore, the stay is not hindered from being housed in the skin through the stay insertion hole on the bottom surface of the skin, and the headrest can be easily molded. Moreover, since the sticky can be accommodated in the epidermis after forming the bag-shaped epidermis, there is no limitation on the method and material of forming the epidermis, and the epidermis can be easily formed and a desired surface feel can be used.

Further, in the stay of the headrest of the present invention and the headrest, since it is not necessary to form a large opening in the bottom surface of the skin for accommodating the stay, the leakage amount of the foaming raw material increases when the foam of the pillow portion is formed. Without doing
Further, since the opening for accommodating the stay does not impair the outer appearance of the bottom portion of the pillow portion, the headrest can be molded economically and with good appearance.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a headrest stay of the present invention and a headrest using the same.

FIG. 2 is a perspective view showing a case where the stay of the embodiment is accommodated in the epidermis of the pillow portion.

FIG. 3 is a cross-sectional view showing a case where the reinforcing member is housed in the outer skin in the example.

FIG. 4 is a cross-sectional view showing a state where the reinforcing member is engaged in the embodiment.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is an enlarged cross-sectional view of an engaging portion of FIG.

FIG. 7 is a sectional view of a headrest using a stay according to another embodiment of the present invention.

FIG. 8 is a sectional view of a headrest using a stay according to another embodiment of the present invention.

FIG. 9 is a perspective view showing a part of a leg portion and a reinforcing member of the embodiment.

FIG. 10 is a perspective view of a headrest using a stay according to another embodiment of the present invention.

FIG. 11 is a sectional view showing a conventional perforated headrest.

[Explanation of symbols]

 10 Headrest 11 Stay 12 Stay Main Body 13 Upper End 14 Leg 15 Engagement of Leg 16 Reinforcement Member 17 Reinforcement Engagement 18 Clamping Claw 21 Pillow 23 Skin Stay Insertion Hole 25 Foam Raw Material Injection Port 26 Foam

Claims (2)

[Claims] 1. A stay of a headrest in which leg portions extend downward from both ends of a laterally extending upper end portion and a reinforcing member is bridged between upper portions of the leg portions, and reinforcement is provided on side surfaces of the leg portions facing each other. A headrest stay, characterized in that engaging portions are formed at both ends of the member, and the reinforcing member is fixed to the leg portion by the engagement of the leg portion and the reinforcing member. 2. A stay of a headrest in which legs extend downward from both ends of a laterally extending upper end and a reinforcing member is bridged between the upper portions of the legs, and a stay insertion hole and a foaming material injection port on the bottom surface. And a pillow portion in which a foam body is formed in the bag-shaped outer skin in which the vicinity of the reinforcing member is embedded from the upper end portion of the stay in the pillow portion, and the stay's leg is inserted from the stay insertion hole on the bottom surface of the skin. In the headrest with the protruding portion, engaging portions are formed on the side surfaces of the leg portion of the stay that face each other and both ends of the reinforcing member, and the reinforcing member is fixed to the leg portion by the engagement between the leg portion and the reinforcing member. A headrest characterized by