KR100699515B1 - A headrest for cars - Google Patents

Abstract

The present invention provides a very economical and beautiful product such that the structure thereof is very simple, the number of parts and manufacturing work is greatly reduced, and the occurrence of defective products is prevented, as well as the productivity is greatly improved and the production cost is greatly reduced. As for a vehicle headrest,

The support member 10 of the predetermined form which fills the cushion member 12 which consists of foams, such as urethane, in the inside of the outer_skin | epidermis 11 provided with the insertion opening 111 in the bottom surface, and the form corresponding to the said support member Skeleton member 20 having a predetermined thickness and molded into a synthetic resin so as to be embedded in the cushion member, the upper portion is buried in the rear end side of the skeletal member is fixed to each other as one body and both vertical parts of the epidermis It characterized in that it comprises a stay 30 penetrating the bottom surface exposed to the bottom.

Stays, headrests, car headrests

Description

Headrest for Cars {A headrest for cars}

Figure 1a is an exploded perspective view showing an example of a conventional headrest

Figure 1b is an assembled state cross-sectional view of the conventional headrest

Figure 2 is a perspective view of the headrest in the present invention

3 is a side cross-sectional view of the headrest according to the first embodiment of the present invention;

Figure 4a is an exploded perspective view showing the skeleton member and the stay of the headrest of Figure 3

Figure 4b is a partially enlarged cross-sectional view of the skeleton member and the stay of Figure 4a coupled

Figure 4c is a side cross-sectional view of the skeleton member in Figure 4a

Figure 5a is an exploded perspective view showing the skeleton member and the stay of the headrest of the second embodiment of the present invention

5B is a partially enlarged cross-sectional view of a state in which the skeleton member and the stay of FIG. 5A are combined;

Figure 6a is an exploded perspective view showing the skeleton member and the stay of the headrest of the third embodiment of the present invention

FIG. 6B is a partially enlarged cross-sectional view of the skeleton member and the stay of FIG. 6A combined; FIG.

* Description of the symbols for the main parts of the drawings *

  10: support member

  11: epidermal body 12: cushioning material

  111: insertion hole 112: locking piece

  20: skeletal member

  21: coupler 22: supply passage

  23: hanger 221: injection hole

  213: horizontal hole 222: discharge port

  223: second outlet

  30: Stay

  31: horizontal part 32: both vertical parts

  321: fixing groove

The present invention relates to a head restraint mounted on a seat of a vehicle, and more particularly, to a rear seat, and more particularly, to a head restraint for a vehicle in which the structure is simple, easy to manufacture, and production cost is reduced.

In general, headrests that support the occupant's head by installing on each back of the front or rear seat of the vehicle are foamed with urethane, etc. inside the outer skin in which the head support member sews breathable fabric and sponge. It is manufactured to have breathability and cushion function by embedding cushioning material that foams liquid. The headrests installed on the front seats and the headrests mounted on the rear seats have a shape of the supporting member and the stay supporting the supporting member, respectively. It is to be different.

Among the headrests, the headrests mounted on the rear seats are as shown in Figs. 1A and 1B, and the backing member 1 is a front portion which is curved from an upper surface portion in a planar state and a front end of the upper surface portion and extends downward in a substantially vertical state. It is.

Therefore, in order to enable the support member 1 to maintain the shape as described above, the upper portion of the stay 2 inserted into the skin 1a must also be processed to form the support member. For processing, the steel rods or pipes are first bent in the form of "c" to form a horizontal portion 2a and both vertical portions 2b extending parallel to each other from both ends of the horizontal portions. The upper side (a) and the middle side (b) were bent in the second and third order to bend the stay in two stages.

By the way, the primary bending process of the steel bar or pipe can make the distance or the verticality of both vertical portions 2b the same as "c". However, during the second and third bending processing, Due to the deformation, both the vertical space and the verticality are different for each stay, and the degree is too high, so the incidence of defective products that cannot be installed on the seat becomes high and the number of bending products increases, resulting in decreased productivity. There were many problems, such as rising thin.

In addition, when the stay 2 is manufactured through the third bending process, the upper portion is a cushioning material when the cushioning material 3 to be mounted inside the epidermal body 1a by injecting and foaming a foaming liquid such as urethane into the mold is mounted. By buried inside, the cushioning material and the upper part were bound together as one body. At this time, in order to increase the binding force, welding and attaching the binding rod 4 made of steel rod or pipe between the two vertical portions 2b of the upper portion and inserting the molded cushioning material into the inside of the epidermis, In order to seal the insertion port 1b so as not to be exposed to the outside, the fixing plate 5 is welded and attached between the right and lower sides of the intermediate side b, which is the tertiary bending part, so as to be positioned inside the insertion hole, and the synthetic resin outside the insertion hole. The binding rod and the fixing plate and the sealing plate have to be manufactured separately because the binding rod and the fixing plate and the sealing plate have to be manufactured separately by binding the sealing plate 6 formed with the screw 7 in the state where the periphery of the insertion hole is interposed between the fixing plate and the sealing plate. There was a problem that the workability was very poor at the same time as the workmanship due to the increase of the number and the number of manufacturing work and the welding of the binding rod and the fixed plate increased.

In addition, the fixing plate 5 is made of a metal plate material, and a plurality of fastening holes 5a for fastening the sealing plate 6 with the screw 7 are formed, as well as for hooking the periphery of the insertion hole 1b. Since the hook pieces 5b are formed by cutting each part so as to be provided in several places, foaming is performed when the foam is injected and foamed with the upper part of the stay 2 including the fixed plate mounted in the mold. In order to prevent water from leaking to the outer surface side of the fixing plate through the cutting part of the fastening hole or the hook piece, the overall processing operation is very complicated and inconvenient, such as the adhesive tape (8) attached to the inner surface of the fastening hole and the cutting part to be sealed. There was also.

The present invention has been invented to solve the problems of the conventional headrest, the object is to provide a headrest for a vehicle that the workability is good, the productivity is improved, the production cost is reduced, as well as the occurrence of defective products will be.

This object of the present invention is achieved by providing a vehicle headrest that is simple in structure and greatly reduced in parts and overall manufacturing labor as well as very simple and easy to manufacture. The upper ends of the stays on the rear end of the skeletal member formed of synthetic resin so as to be fixed to each other to form a body, and then inserting the skeletal members into the inner skin of the support member, and then the two vertical parts of the stay are exposed to the outside. It is characterized in that it is manufactured by directly injecting and foaming foaming liquid such as urethane into the epidermal body. In this case, the skeletal member, the epidermal body and the stay are molded into one body by one foaming process and after molding As in the prior art, there is no need to seal the insertion opening of the epidermis with a separate sealing plate.

Hereinafter, the vehicle headrest of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing a headrest to which the present invention is applied, Figure 3 is a side cross-sectional view of the headrest of the first embodiment of the present invention, Figure 4a-c is a first embodiment of the skeleton member and the stay in the headrest An exploded perspective view and a partially enlarged cross-sectional view showing an extract.

The headrest according to the first embodiment of the present invention is a support member 10 which fills the inside of the skin 11 with a cushion member 12 made of foam such as urethane, and a form corresponding to the support member. Skeleton member 20, which is formed of synthetic resin and buried inside the cushion member, and the upper portion is fixed to one body by being coupled to the rear end side of the skeletal member, and both vertical portions are exposed to the outside through the bottom of the epidermis. It consists of the stay 30 which becomes.

The backing member 10 is formed of a front surface of the upper surface portion and the front surface of the planar state is curved from the front end of the upper surface portion is extended downward, and sewn in the form of breathable textile paper and sponge, etc. In the bottom face of the end side, the insertion hole 111 of the skeletal member 20 is provided in the transverse direction.

Skeleton member 20 is molded to a predetermined thickness with a synthetic resin in a form corresponding to the support member 10, the rear end side for fixing as a body by combining the upper portion of the stay 30 made of steel rods or pipes Coupling tool 21 is provided.

Coupling sphere 21, the horizontal groove portion 211 which is recessed in the transverse direction on the upper surface of the rear end side of the skeletal member 20 so that the horizontal portion 31 of the stay (30) in the form of "c" and the coupling; It consists of a vertical hole (212) that vertically penetrates the rear end side from both ends of the horizontal groove portion.

Accordingly, when the stay 30 is coupled to the skeletal member 20 to fix the stay 30, the vertical portions 32 are inserted through the vertical holes 212 from the upper side to the lower side so that the horizontal portion 31 is the horizontal groove portion 211. And then apply and harden the same synthetic resin solution or adhesive (p) as the skeletal member, the upper part of the stay including the horizontal part coupled to the horizontal groove part and the vertical hole and the upper part of both vertical parts is buried and fixed to each other. It becomes one body.

In addition, if necessary, the horizontal hole 213 is formed at both rear end surfaces of the skeletal member 20 or the rear end sides of both sides thereof so as to be connected to the vertical holes 212, and at the same time, the stay 30 penetrates the vertical holes. The fixing groove 321 is formed in the horizontal hole position of the outer surface of the two vertical portions 32 to couple the vertical portion to the vertical hole, and then the stay 30 is injected or hardened with the same synthetic resin solution or adhesive as the skeletal member. Is fixed tightly.

In addition, when the skeleton member 20 is molded, the upper portion of the stay 30 may be mounted in a mold for molding the skeleton member, and then molded to be buried. In this case, the molding process is performed when the stay is plated. Problems such as discoloration or scratches due to high heat in the product, resulting in deterioration of the merchandise, and of course, when using a non-plated stay, the skeleton member is joined together as one body after molding. It is not preferable because it is very difficult to cleanly plate the both vertical portions 32 exposed entirely.

5A and 5B show the headrest of the second embodiment of the present invention, wherein the stay 30 which consists of only the vertical portions 32, the skeleton member 20, and the stay 30 on the skeleton member 20 are shown. ) Is composed of a coupler 21 for fixing as a body by combining.

The coupler is a vertical hole (212) formed to penetrate vertically vertically on both sides of the rear end side of the skeletal member and a horizontal hole (213) formed to be connected to the vertical hole on the rear end side of both or both sides of the rear end surface. A fixing groove 321 is formed at the position of the horizontal hole on the outer surface of the upper portion of the vertical portion penetrating the woven hole.

Accordingly, when the frame member 20 and the stay 30 of the headrest according to the second embodiment are coupled and fixed, the upper portions of both vertical portions 32 are respectively coupled to the vertical holes 212. What is necessary is just to inject | pour and harden the same synthetic resin liquid or adhesive p as the skeletal member through the horizontal hole 213.

In this way, the injected synthetic resin solution or adhesive is filled in the gap between the outer circumference of the stay 30 and the inner circumference of the vertical hole 212 and the fixing groove 321, so that the stay is fixed to the skeleton member 20 and one body. It is firmly combined and fixed.

6A and 6B show the headrest according to the third embodiment of the present invention, wherein the stay 30 includes both vertical portions 32 and horizontal portions 31 which are bent and extended only a predetermined length to the upper ends of the vertical portions. ), And a coupling member 21 for fixing the skeleton member 20 and the skeleton member 20 and the stay 30 as one body, which is a length of the horizontal portion on both sides of the upper surface of the skeleton member. The corresponding horizontal groove 211 is formed to be recessed to be connected to the upper end of the vertical hole (212).

Therefore, when the stay 30 is fixed to the skeletal member 20, the upper portion of the vertical portion 32 is coupled to the vertical hole 212 so that the horizontal portion 31 is inserted into the horizontal groove portion 211. Next, in the same manner as in the first embodiment, the upper portion of the horizontal portion and the vertical portion coupled to the horizontal groove portion and the vertical hole is applied and cured with the same synthetic resin solution or adhesive as the skeletal member, or as in the second embodiment. The horizontal hole 214 is formed on both sides of the rear end surface of the skeletal member so as to be connected to the vertical hole, and the fixing hole 321 is formed at the position of the horizontal hole at the outer surface of the upper end side of the vertical part passing through the vertical hole. After joining the upper end side of the vertical part, respectively, you may inject and harden the same synthetic resin liquid or adhesive p as a skeletal member through a horizontal hole.

And, the skeletal member 20 is injected and foamed foamed material such as urethane in the state mounted on the mold as in the conventional headrest in Figs. 1a, 1b and molded into one body with the cushioning material 12 together with the cushioning material It may be inserted into the interior of the epidermis 11 through the insertion hole 111, in this case, in order to seal the insertion hole from the outside so as not to be exposed to the outside, by combining the suture plate as in the prior art, the periphery of the insertion hole skeleton Since it is necessary to fasten them by screwing them in a state interposed between and the suture plates, the fastening holes of the screws should be formed at the same position as the screw holes formed in the suture plate on the bottom of the skeletal member.

Of course, at this time, even if the fastening holes of the screw to be formed, in consideration of the thickness of the skeleton member 20 is preferably formed to penetrate to maintain a firm fastening state, in this case the skeleton member 20 is mounted on the mold cushion material In order to prevent the foaming liquid injected when molding (12) from leaking to the bottom surface side of the skeletal member through the fastening holes, an adhesive tape should be attached to the inner surface of the fastening hole and sealed. The overall processing and assembling work is increased as well as the work is very troublesome and uncomfortable.

Therefore, in view of these problems, the skeleton member 20 is inserted into the inside of the epidermis 11 and is mounted on the mold together, and the foaming solution is directly injected and foamed into the epidermis through the insertion hole 111 to the skeleton. It is preferable that the member, the skin and the cushioning material 12 all be in one body.

By the way, when the foam liquid is directly injected into the epidermis 11, the initially injected foam is directly in contact with the inner surface of the epidermis and is hardened in the state of being impregnated into the tissue of the epidermis, so that a locally rigid portion is generated. Since a hard spot phenomenon occurs and a part of the product penetrates the tissue before it solidifies and leaks to the surface, a defective product is generated. The foam should not be in liquid contact with the inner surface of the epidermis at the beginning of injection by dispersing it into the interior of the epidermis rather than in direct contact with it.

Accordingly, in the present invention, as shown in Figure 4c the injection port 221 is opened from the rear end side of the bottom to the lower side and the discharge port 222 is discharged from the injection port the supply passage 22 is opened to the front side from the front end of the curved portion of the upper surface It is formed in the rear side of the skeleton member 20 to form a "b" form consisting of a vertical portion and a horizontal portion extending from the upper end of the vertical portion to the front, and the second discharge port 223 is formed to be opened downward in the lower portion of the discharge port side It was.

Of course, the supply passage 22, the injection port 221 and the discharge port 222, 223 formed in this way is formed long in the transverse direction in consideration of the left and right width of the skeleton member 20 and at the same time the injection port is the rear side of the skeleton member It is formed so as to position between both vertical portions 32 of the stay 30 is fixed to.

As described above, the skeleton member 20 having the supply passage 22 is mounted in the mold M while being inserted into the epidermal body 11 through the insertion hole 111 as shown in FIG. Both vertical portions 32 of the stay 30 mounted on the side are exposed to the outside of the mold, and then the supply tube 40 connected to the injection device of the foam liquid is coupled to the injection hole 221 through the injection hole of the mold. When the foaming liquid is injected, the injected foaming liquid passes through the supply passage 22 and then is discharged into the skin 11 through the discharge ports 222 and 223. At this time, when the foam liquid enters the horizontal portion from the vertical portion of the supply passage, it hits the inner surface of the horizontal portion and is subjected to resistance in the process of changing its direction, thereby delaying the time passing through the supply passage.

At this time, even if the delay time is extremely short, since the foaming of the foaming liquid is already in progress, the foaming liquid eventually passed through the supply passage 22 and discharged to the discharge ports 222 and 223 is a creamy state rather than a liquid state, and thus the superficial body It is impregnated or impermeable to the tissue of (11) and is filled inside.

When the foaming of the injected foam is completed, the skeletal member 20 is buried in the foamed cushioning material 12 to form a body. The foamed liquid injected in this process is discharged to the front and the bottom of the outlets 222 and 223. Since it is formed to be open, the inside of the epidermis 11 is quickly filled, as well as the cushion member is firmly bound to the skeletal member as it is connected up and down through the discharge ports.

In addition, when the through hole 213 is formed in the downwardly extending front surface of the skeletal member 20, the binding force with the cushion material 12 is further enhanced, so that the binding state is maintained even after long-term use, and the weight of the headrest itself is also reduced. do.

On the other hand, the hook projections 23 are formed at portions of both sides of the lower surface of the inner surface of the injection hole 221 facing each other, and correspondingly, the engaging pieces 112 made of vinyl or the like are respectively formed on the inner surface of the front and rear ends of the insertion hole 111. Is attached in the direction.

Therefore, when the skeletal member 20 is inserted into the inside of the epidermis 11 and then the front and rear ends of the insertion hole 111 are bent from the outside to the inside to be inserted into the injection hole 221, the locking pieces 112 are hooked. (23) will walk.

In this way, the bottom surface of the injection hole 221 is wrapped by the front and rear ends of the insertion hole 111 is not exposed to the outside and the insertion opening is sealed by the front and rear ends joined to each other, wherein both vertical portions 32 of the stay 30 ) Is exposed to the outside through both end sides of the insertion port.

After mounting in the mold in such a state, and then overlap the feed tube 40 made of a thin synthetic resin and the tip is inserted into the insertion hole 111 through the injection hole of the mold and connected to the supply passage 22 and then Connect the foam liquid injector to the rear end and inject and foam the foam liquid.

When the foaming is completed, the feed tube 40 is pulled out and demolded from the mold or demolded, and then the feed tube in which the tip is inserted into the insertion hole 111 is pulled out to complete the processing.

In this process, since the injection hole 221 is inserted into the inner portion and sealed by the front and rear ends of the insertion hole 111 which are brought into close contact with each other, the injection hole is not visible from the outside and the other surface appears when the epidermal body 11 is made by sewing. It looks like a sewing line of the part, and as a result, there is no need for post-operation such as attaching a separate suture plate with a screw as in the prior art, and the appearance is very beautiful, thereby greatly improving the productability.

The headrest according to the embodiment of the present invention has advantages such as simple structure, reduced parts and manufacturing labor, and prevention of defective products, as well as improved productivity and reduced production cost. You will also get

In particular, even when the foaming liquid is directly injected and foamed while the skeletal member is inserted into the epidermis, the foaming liquid does not come into direct contact with the epidermis in a liquid state, so that the foaming liquid is locally impregnated into the tissue of the epidermis and cured. In addition to preventing the occurrence of the so-called hard spot phenomenon, it is also possible to prevent the phenomenon of leaking to the surface through the tissue and at the same time, there is an effect of obtaining a beautiful product that does not require post-work.

Claims (9)

A support member 10 composed of a hollow body skin 11 and a cushioning material 12 filled therein, and accommodated in the skin 11 of the support member 10 and used for filling the cushioning material 12. In the headrest for a vehicle having a skeleton member 20, and a top 30 is supported by the skeleton member 20, both vertical portions 32 are projected to the lower end of the support member 10, The skeletal member 20 has an upper portion that is substantially horizontal and a curved portion extending downwardly therefrom, and is formed of synthetic resin to have a supply passage 22 of foam therein, and a foam supply passage 22 at a rear end of the upper bottom surface. The foam injection port 221 and the front of the curved portion is provided with a foam liquid discharge port 222 of the foam liquid supply passage 22, the stay 30 in the portion where the foam liquid supply passage 22 of the upper rear end is not formed Vehicle headrests characterized in that the vertical coupler 32 is inserted, fixed to the pair of coupling holes 21 are penetrated downward. The method of claim 1, The supply passage (22) is a vehicle headrest, characterized in that consisting of a vertical portion from the inlet 221 to the discharge port (222) and a horizontal portion extending from the upper end to the front of the vertical portion. The method according to claim 1 or 2, The supply passage (22) is a vehicle headrest, characterized in that it comprises a second discharge port 223 which is opened from the bottom of the skeletal member (20) to the bottom. The method according to claim 1 or 2, The inlet 221 of the supply passage 22, the vehicle headrest, characterized in that formed long to be located between the pair of coupling holes 21 of the skeletal member (20). The method of claim 4, wherein The injection port 221 of the supply passage 22 is formed long to be located between the pair of coupling holes 21 of the skeletal member 20; Vehicle headrest, characterized in that a pair of hook projections (23) formed to face each other at the lower end of the inner surface of the injection hole (221). The method according to claim 1 or 2, The stay 30 includes a horizontal portion 31 connecting the upper ends of both vertical portions 32, Vehicle headrest, characterized in that the horizontal groove portion 211 is recessed in the transverse direction between the pair of coupling spheres (21) of the skeletal member (20) to couple the horizontal portion (31). The method of claim 6, Forming horizontal holes 213 in communication with the coupler 21 on both rear end surfaces of the skeletal member 20 or rear end sides of both side surfaces thereof; A fixing groove 321 is formed at an outer circumference of a portion corresponding to the horizontal hole 213 of both vertical portions 32 of the stay 30 fixed to the coupler 21; Vehicle headrest, characterized in that the stay 30 is fixed to the skeletal member 20 by injecting a synthetic resin solution or adhesive through the horizontal hole (212). The method according to claim 1 or 2, Forming horizontal holes 213 in communication with the coupler 121 at both rear end surfaces of the skeletal member 20 or rear end sides of both side surfaces thereof; A fixing groove 321 is formed at an outer circumference of a portion corresponding to the horizontal hole 213 of both vertical portions 32 of the stay 30 fixed to the coupler 21; Vehicle headrest, characterized in that the stay 30 is fixed to the skeletal member 20 by injecting a synthetic resin or adhesive through the horizontal hole (213). The method according to claim 1 or 2, The stay (30) comprises a horizontal portion (31) bent over the top of each vertical portion (32); Horizontal grooves 211 are formed on both sides of the upper surface of the skeletal member 20 to couple the upper ends of the pair of coupling holes 21 to couple the horizontal portions 31 to each other; The horizontal portions of both vertical portions 32 of the stay 30 fixed to the coupling sphere 21 A fixing groove 321 is formed in the outer periphery of the portion corresponding to the ball 213; Vehicle headrest, characterized in that the stay 30 is fixed to the skeletal member 20 by injecting a synthetic resin or adhesive through the horizontal hole (213).

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