CN112140961A - Headrest support and method for manufacturing same - Google Patents
Headrest support and method for manufacturing same Download PDFInfo
- Publication number
- CN112140961A CN112140961A CN202010590322.1A CN202010590322A CN112140961A CN 112140961 A CN112140961 A CN 112140961A CN 202010590322 A CN202010590322 A CN 202010590322A CN 112140961 A CN112140961 A CN 112140961A
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- China
- Prior art keywords
- pipe
- headrest
- insertion portion
- metal
- headrest bracket
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/80—Head-rests
- B60N2/894—Head-rests with rods solidly attached to the back-rest
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Abstract
The present invention relates to a headrest bracket and a manufacturing method thereof. The headrest bracket (1) is formed of a metal pipe and has: an embedded part (2) embedded in the headrest body (10); and an insertion portion (3) inserted into an insertion hole of a headrest support provided at the top of the seat back. The insertion parts (3) at both sides are externally embedded with a coating pipe (4).
Description
Technical Field
The present invention relates to a headrest bracket serving as a support member for a headrest attached to the top of a seatback of an automobile seat, and a method for manufacturing the headrest bracket.
Background
A headrest is generally mounted on the top of a seat back of an automobile seat, and generally, the headrest is composed of a headrest body including a cushion molded from a foamed material or the like, and a headrest stay of a substantially japanese kana "コ" shape embedded in the headrest body and having both end portions protruding (for example, see patent document 1 below and the like).
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2004-114959
Disclosure of Invention
Problems to be solved by the invention
A headrest stay used for such a headrest is generally manufactured by bending a metal pipe into a shape of approximately japanese kana "コ", chamfering an end face of the metal pipe, grooving a predetermined position, and further plating an outer circumferential surface of the metal pipe with a plating treatment such as nickel-chromium alloy plating for the purpose of rust prevention and decoration. A headrest body including a cushion is formed and mounted on an upper portion of the headrest bracket.
Further, since only the legs on both sides of the headrest stay are exposed and the upper portion thereof enters the inside of the headrest body, the entire stay is not required to be plated, but at least the exposed legs need to be plated. In the plating step, the entire plurality of headrest brackets are immersed in the plating tank at a time to perform the plating treatment, in view of the structure of the device for suspending the headrest brackets used therefor.
Therefore, particularly in a manufacturing plant in which a headrest frame is newly constructed, a plating jig, a suspension device, and a plating apparatus including a plurality of plating tanks, which are used in a plating process, are required. In addition, the number of plating steps in the process of manufacturing the headrest stay is large, and it is necessary to reduce the number of manufacturing steps of the headrest stay.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a headrest bracket and a method for manufacturing the same, which can manufacture a headrest bracket having excellent performance with a reduced number of steps.
Means for solving the problems
In order to achieve the above object, a headrest stay of the present invention is a headrest stay made of a metal tube, including: an embedded part embedded in the headrest body; and an insertion portion inserted into an insertion hole of a headrest support provided at a top portion of a seat back,
a coating pipe is embedded outside the inserting part,
the cover pipe has an inner diameter closely fitted to the outside of the insertion portion of the headrest bracket, has an outer diameter capable of being inserted into the insertion hole of the headrest supporter, is formed of a metal having corrosion resistance and wear resistance, and has a groove formed at a predetermined position of the outer peripheral portion of the cover pipe in a state where the cover pipe is fitted in the insertion portion.
In addition, a method for manufacturing a headrest stay according to the present invention is a headrest stay formed of a metal pipe, including: an embedded part embedded in the headrest body; and an insertion portion inserted into an insertion hole of a headrest support provided at a top portion of a seat back,
the manufacturing method of the headrest bracket comprises the following steps:
a bending step of bending the metal pipe into a substantially japanese kana "コ" shape to form the embedded portion in the middle portion and to form the linear insertion portions at both end portions; and
a step of fitting the coating tube to the linear insertion portion,
the cover pipe has an inner diameter closely fitted into an outer side of the insertion portion of the headrest bracket, has an outer diameter capable of being inserted into the insertion hole of the headrest supporter, is formed of a metal having corrosion resistance and wear resistance,
after the cladding pipe is fitted to the insertion portion, a step of forming a groove at a predetermined position on the outer peripheral portion of the cladding pipe is performed.
According to the present invention, since the coating pipe made of a metal having corrosion resistance and abrasion resistance is fitted to the outside of the insertion portion of the holder exposed from the headrest body, the plating process which has been conventionally performed is not required. Therefore, a plating apparatus is not required, and a large number of plating steps including pretreatment and post-treatment of plating are not required during the production, so that the number of production steps of the headrest stay can be significantly reduced, and the production cost can also be reduced.
In particular, when a manufacturing process of a headrest stay is newly constructed in a factory, plating equipment including a plating tank, a plating jig, and a suspension device, which have been conventionally used as necessary in a plating process, is not required, and a plating solution containing a high-cost plating metal material such as nickel or chromium is not required. Further, since the plating process is not required, the number of manufacturing processes of the headrest bracket can be significantly reduced.
Further, since the clad pipe is plastically deformed on the metal pipe side of the bracket when the recessed groove is formed in the insertion portion, the clad pipe can be easily and reliably fixed to the insertion portion only by the step of processing the recessed groove.
Here, the coating pipe is preferably a stainless steel pipe. Thus, the insertion portion exposed when the headrest is used is formed of stainless steel having excellent decorative properties, wear resistance, and corrosion resistance, and the commercial value of the headrest can be improved.
In this case, it is preferable that after the groove is formed, rounding is performed by pressing the tip of the insertion portion against the recess of the forming die, so that rounding is formed at the tip of the insertion portion.
Here, the embedded portion can be formed by fitting the cladding pipe to the insertion portion to form the concave groove and then bending the intermediate portion of the metal pipe into a substantially U-shape. Thus, since the outer fitting of the clad pipe and the formation of the concave groove can be performed in the linear state of the metal pipe, the subsequent processing and the handling when the semi-finished product is transferred to the subsequent step can be performed more easily than in the case where the embedded portion is first bent.
Here, it is preferable that the concave groove is formed by being recessed from the clad pipe to the metal pipe and plastically deformed. As a result, the groove is formed deep enough, and when the headrest stay is used, the locking claw on the headrest stay side is locked to both the cover pipe and the metal pipe. This can increase the extraction load for extracting the headrest bracket from the headrest support, and can increase the fixing force of the headrest bracket.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, a headrest stay having excellent performance can be easily manufactured with a reduced number of steps.
Drawings
Fig. 1 is a front view of a headrest bracket according to an embodiment of the present invention.
Fig. 2 is a right side view of the headrest bracket.
Fig. 3 is a partial sectional view of an insertion portion of the headrest bracket.
Fig. 4 is a partial cross-sectional view of the grooved insert portion of the headrest bracket.
Fig. 5 is a V-V sectional view of fig. 4.
Fig. 6 is a cross-sectional view VI-VI of fig. 4.
Fig. 7 is an enlarged partial cross-sectional view of a rounded insert tip.
Fig. 8 is a front view of the manufactured headrest.
Fig. 9 is a right side view of the manufactured headrest.
Description of the reference numerals
1. A headrest bracket; 2. an embedding part; 3. an insertion portion; 4. a cladding tube; 5. a groove; 10. a headrest body; 11. a headrest support; 12. an insertion hole; 13. a seat back; 14. locking claw
Detailed Description
An embodiment of the present invention will be described below with reference to the drawings. As shown in fig. 1 and 2, the headrest bracket 1 is formed by using one metal pipe M as a base portion, and includes: an embedded portion 2 embedded in the headrest body 10; and an insertion portion 3 inserted into an insertion hole 12 of a headrest support 11 provided on the top of a seat back 13.
As shown in fig. 1, the middle portion of one linear metal tube M serving as the base portion is bent in a bending step into a substantially japanese kana "コ" shape in front view, and both side end portions of the metal tube M remain linear and this portion serves as the insertion portion 3. The metal pipe M is a general-purpose steel pipe, but when used without being subjected to a plating treatment, the surface thereof is corroded due to aging, and the appearance thereof is deteriorated.
As shown in fig. 3 and 4, in the headrest bracket 1, the coating pipe 4 having corrosion resistance, abrasion resistance and decorativeness is fitted to the outside of the insertion portion 3 on both sides thereof, and the plating process of the metal pipe M is omitted. The clad pipe 4 is a pipe having good appearance and excellent corrosion resistance and abrasion resistance, and is formed of, for example, a stainless steel pipe. In addition, the cover tube 4 has an inner diameter that is tightly fitted into the outside of the insertion portion 3 of the headrest bracket 1, and as shown in fig. 8 and 9, has an outer diameter that can be inserted into the insertion hole 12 of the headrest support 11.
For example, as shown in fig. 5, if the inner diameter R1 of the clad pipe 4 is set to be substantially the same size as the outer diameter R2 of the metal pipe M, or the inner diameter R1 of the clad pipe 4 is set to be about 0.1mm larger than the outer diameter R2 of the metal pipe M, the end faces of the clad pipe 4 and the metal pipe M are chamfered, so that the clad pipe 4 can be simply pushed into the insertion portions 3 at both ends of the metal pipe M from the axial direction of the metal pipe M without rattling.
Even if there is slight play in the fitting of the coating pipe 4 and the metal pipe M, since the metal pipe M is finally dented from the coating pipe 4 and the concave groove 5 is formed outside the insertion portion 3 by plastic deformation, the play of the coating pipe 4 is eliminated by the concave groove processing, and the coating pipe 4 is coated around the metal pipe M and is well fitted outside.
In the assembling step of the coating pipe 4, the linear metal pipe M and the coating pipe 4 are held coaxially by a predetermined jig, and the metal pipe M is pushed into the held coating pipe 4 by a driving device using a fluid pressure cylinder or the like in a state where the coating pipe 4 is opposed to the end of the insertion portion 3.
In the coating tube assembling step, it is preferable from the viewpoint of workability that the coating tube 4 is externally fitted to the insertion portions 3 on both sides of the linear metal tube M before the intermediate portion of the metal tube M of the headrest bracket 1 is bent into a substantially japanese kana "コ" shape. The intermediate portion of the metal pipe M may be bent into a shape of approximately japanese kana "コ", and then the coating pipes 4 may be fitted around both ends of the linear metal pipe M that becomes the insertion portion 3.
After the coating pipe 4 is fitted to the insertion portion 3, a concave groove 5 is formed at a predetermined position in the outer peripheral portion of the coating pipe 4. This grooving process is performed by, for example, pressing a grooving roller against the outer peripheral portion of the cladding pipe 4. As shown in fig. 4, by the machining of the groove 5, the clad pipe 4 is plastically deformed together with the metal pipe M in such a manner that the clad pipe 4 is sunk into the metal pipe M side at the groove portion. Therefore, the clad pipe 4 can be easily and reliably fixed to the metal pipe M only by machining the concave groove 5.
Further, the groove forming process can form the groove 5 only by plastically deforming the outer peripheral portion of the clad pipe 4 toward the metal pipe M, and can fix the clad pipe 4. However, as shown in fig. 4, it is preferable that the clad pipe 4 is plastically deformed together with the metal pipe M in such a manner that the clad pipe 4 is sunk into the metal pipe M at the recessed portion.
Next, a method for manufacturing the headrest stay having the above-described structure will be specifically described.
The metal pipe M serving as the base of the headrest bracket 1 is a high-tensile steel pipe having a thickness of about 1.5 to 2.0mm and an outer diameter of about 10 to 13mm, for example, and the linear metal pipe M is cut to a predetermined length and burrs at the cut portions at both ends are removed by chamfering.
Next, a predetermined length of the clad pipe 4 is fitted to the insertion portion 3 on both sides of the metal pipe M. As shown in fig. 5, the inner diameter R1 of the coating pipe 4 is set to be substantially the same size as the outer diameter R2 of the insertion portion 3 of the metal pipe M, or the inner diameter R1 is set to be about 0.1mm larger than the outer diameter R2 of the insertion portion 3, by using a stainless steel pipe such as SUS304 as the coating pipe 4. As shown in fig. 8 and 9, the length of the cladding pipe 4 is a length required for the support legs on both sides of the headrest main body 10, and is a length in which the upper portion thereof slightly enters the interior of the headrest main body 10.
As the stainless steel pipe to be the clad pipe 4, a general-purpose stainless steel pipe having a wall thickness of about 0.3mm to 1.5mm can be used. In this case, for example, if the outer diameter of the metal pipe M is set to about 12mm, the outer diameter of the clad pipe 4 may be set to about 12.3mm to about 13.6mm correspondingly. The surface of the stainless steel pipe can be inexpensively finished by a hairline treatment or a finish treatment, and the clad pipe 4 of stainless steel having a finished surface has excellent decorativeness as it is.
The strength required for the headrest bracket 1 is required for the insertion portion 3 to serve as a support leg of the headrest, but if the cover pipe 4 of a stainless steel pipe having rigidity is fitted to the insertion portion 3, the strength of the insertion portion 3 is increased, and therefore the performance of the headrest bracket 1 is improved. On the other hand, when the strength of the insertion portion 3 is set to be the same as that of the conventional one, the thickness of the metal pipe M can be made thinner than that of a steel pipe used in the conventional one, and the weight of the bracket can be reduced, so that the cost of the metal pipe M can also be reduced.
In the step of fitting the coating pipe 4 to the metal pipe M of the insertion portion 3, the insertion portion 3 of the metal pipe M and the coating pipe 4 are held on the same axis by using a predetermined jig. Then, the metal pipe M is pushed into the held coating pipe 4 by a horizontal movement driving device using a fluid pressure cylinder or the like in a state where the coating pipe 4 is opposed to the end of the insertion portion 3.
The tolerance of the inner diameter of the stainless steel pipe and the tolerance of the outer diameter of the high-tension pipe are usually about ± 0.15mm, and the inner diameter R1 of the clad pipe 4 is set to the same size as the outer diameter R2 of the insertion portion 3 of the metal pipe M, or the inner diameter R1 is set to be about 0.1mm larger than the outer diameter R2 of the insertion portion 3. Thus, the cladding pipe 4 is smoothly fitted to the insertion portion 3 without rattling only by inserting the metal pipe M into the cladding pipe 4 by pushing it in. Further, since the linear coating pipe 4 is inserted into and externally fitted to the linear metal pipe M, workability is good, and the coating pipe 4 can be easily externally fitted.
Next, a groove-like recess 5 is formed at a predetermined position of the coating pipe 4 fitted to the insertion portion 3. The recess 5 is formed at a predetermined position of the outer periphery of the cover tube 4 by press working or the like so that when the insertion portion 3 of the headrest bracket 1 is inserted into the insertion hole 12 of the headrest supporter 11 provided on the seatback 13 when the headrest is attached to the seatback 13, the locking claw 14 (fig. 8) provided in the insertion hole 12 is locked in the recess 5.
In the press working, a predetermined punch, press punch, or grooving roller is pressed against a predetermined position of the outer peripheral portion of the clad pipe 4, and the clad pipe 4 and a part of the insertion portion 3 of the metal pipe M are plastically deformed, thereby forming the groove 5 as shown in fig. 1 and 4.
Such a groove-like recessed groove 5 is formed in the outer peripheral portion of the coating pipe 4 by plastic deformation, and the coating pipe 4 is plastically deformed so as to be recessed toward the metal pipe M. Therefore, even when there is a slight gap between the metal pipe M of the insertion portion 3 and the coating pipe 4, the coating pipe 4 can be easily fixed to the insertion portion 3 without rattling.
Further, the fixing of the cladding pipe 4 and the metal pipe M can be fixed by an adhesive or welding, in addition to the fixing by the groove 5.
Next, the coating tube 4 is fitted externally, and the tip of the insertion portion 3 is rounded. In this case, the rounded shape can be easily formed by pressing the distal ends of the insertion portions 3 on both sides against the concave portions of the forming die, thereby forming the rounded shape at the distal ends of the insertion portions 3.
Next, finally, the middle portion of the linear metal pipe M is bent into a shape of substantially japanese kana "コ" using a bending machine, thereby forming the embedded portion 2. The bending machine can use, for example, a bending machine configured by: a chuck section provided with a mandrel shaft having a mandrel attached to a tip end thereof; a rotatable bending roller disposed on one side of the bending mandrel shaft; a clamping die which is provided with an arc-shaped concave part for accommodating the metal pipe M on the bending roller, can advance and retreat relative to the other side part of the mandrel shaft and can rotate by taking a bending center as an axis; and a pressing die which moves in the same direction as the holding die.
The headrest bracket 1 is bent into such a shape by such a bending machine: the front view is made in the shape as shown in fig. 1, and the side view is made in the shape as shown in fig. 2, that is, the insertion portion 3 is bent so that the middle portion is formed in a substantially japanese kana "コ" shape and the both side end portions are formed in a straight line shape.
Then, as shown in fig. 8 and 9, a headrest body 10 including a cushion molded from a foam material or the like is attached to the embedded portion 2 of the headrest bracket 1, and the two insertion portions 3 serving as support legs are exposed below the headrest body 10. The cover tube 4 fitted to the insertion portion 3 covers the entire insertion portion 3, and the two insertion portions 3 are inserted into the insertion holes 12 of the headrest supporter 11 provided in the seatback 13 of the vehicle or the like, thereby attaching the headrest to the seatback 13.
As shown in fig. 8, the locking claw 14 locked in the concave groove 5 has elasticity and is provided in the insertion hole 12 of the headrest support 11 so as to be able to release the locking. The height position of the headrest body 10 is maintained to be changeable by the locking of the locking claws 14 in the insertion holes 12 and the recessed grooves 5 of the insertion portion 3.
In this way, the metallic coating tube 4 having corrosion resistance and wear resistance is fitted to the insertion portion 3 of the bracket exposed from the headrest body 10, and therefore, the plating process conventionally performed is not required. Therefore, plating equipment is not required, and many plating steps including pretreatment and post-treatment of plating are not required in the production. The number of manufacturing steps of the headrest bracket 1 can be significantly reduced, and the manufacturing cost can also be reduced.
In particular, when a manufacturing process of a headrest stay is newly installed in a factory, a plating apparatus including a plurality of plating tanks, a plating jig, and a suspension device, which are conventionally required in a plating process, is not required, and a plating solution containing a high-cost plating metal material such as nickel or chromium is not required. Thus, the plating process is not required, and the manufacturing process of the headrest bracket is shortened, thereby reducing the manufacturing cost.
Further, when the recessed groove 5 is formed in the insertion portion 3, the coating pipe 4 in the portion of the recessed groove 5 is plastically deformed to the metal pipe M side of the bracket, and therefore, the coating pipe 4 can be easily fixed to the insertion portion 3 only by this step.
Thus, when the headrest having the headrest bracket 1 is used, as shown in fig. 8, when the locking claw 14 on the headrest support 11 side is locked in the recessed groove 5, the depth of the recessed groove 5 reaches the metal pipe M deeply, and therefore the locking claw 14 is locked in the recessed groove 5 having a sufficient depth. Therefore, the extraction load of the headrest bracket 1 can be increased, and the headrest bracket 1 can be firmly held in the insertion hole 12.
Claims (8)
1. A headrest bracket which is a metal-made headrest bracket, comprising: an embedded part embedded in the headrest body; and an insertion portion inserted into an insertion hole of a headrest support provided at a top portion of a seat back,
a coating pipe is embedded outside the inserting part,
the cover pipe has an inner diameter closely fitted to the outside of the insertion portion of the headrest bracket, has an outer diameter capable of being inserted into the insertion hole of the headrest supporter, is formed of a metal having corrosion resistance and wear resistance, and has a groove formed at a predetermined position of the outer peripheral portion of the cover pipe in a state where the cover pipe is fitted in the insertion portion.
2. The headrest bracket as claimed in claim 1,
the cladding pipe is a stainless steel pipe.
3. The headrest bracket as claimed in claim 1,
the groove is recessed from the clad pipe to the metal pipe, and is formed by plastic deformation.
4. A method of manufacturing a headrest bracket, which is a headrest bracket formed of a metal pipe, comprising: an embedded part embedded in the headrest body; and an insertion portion inserted into an insertion hole of a headrest support provided at a top portion of a seat back,
the manufacturing method of the headrest bracket comprises the following steps:
a bending step of bending the metal pipe into a substantially japanese character "コ" shape to form the embedded portion in a middle portion and to form the linear insertion portions at both end portions; and
a step of fitting the coating tube to the linear insertion portion,
the cover pipe has an inner diameter closely fitted into an outer side of the insertion portion of the headrest bracket, has an outer diameter capable of being inserted into the insertion hole of the headrest supporter, is formed of a metal having corrosion resistance and wear resistance,
after the cladding pipe is fitted to the insertion portion, a step of forming a groove at a predetermined position on the outer peripheral portion of the cladding pipe is performed.
5. The method of manufacturing a headrest bracket according to claim 4,
the cladding pipe is a stainless steel pipe.
6. The method of manufacturing a headrest bracket according to claim 4,
after the cladding pipe is fitted to the insertion portion to form the groove, rounding is performed by pressing the tip of the insertion portion against the recess of the molding die, thereby forming a rounded shape at the tip of the insertion portion.
7. The method of manufacturing a headrest bracket according to claim 4,
the embedded portion is formed by fitting the cladding pipe to the insertion portion to form the groove, and then bending an intermediate portion of the metal pipe into a shape substantially like japanese kana "コ".
8. The method of manufacturing a headrest bracket according to claim 4,
the groove is recessed from the clad pipe to the metal pipe, and is formed by plastic deformation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019120338A JP2021004020A (en) | 2019-06-27 | 2019-06-27 | Headrest stay and method for manufacturing the same |
| JP2019-120338 | 2019-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112140961A true CN112140961A (en) | 2020-12-29 |
Family
ID=73888652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010590322.1A Pending CN112140961A (en) | 2019-06-27 | 2020-06-24 | Headrest support and method for manufacturing same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2021004020A (en) |
| CN (1) | CN112140961A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555941U (en) * | 1991-12-27 | 1993-07-27 | 東京シート株式会社 | Vehicle headrest |
| JPH11115596A (en) * | 1997-10-21 | 1999-04-27 | Suzuki Motor Corp | Seat belt holder |
| JP2006304869A (en) * | 2005-04-26 | 2006-11-09 | Arai Seisakusho:Kk | Method of manufacturing headrest stay |
| JP2016165968A (en) * | 2015-03-10 | 2016-09-15 | トヨタ紡織株式会社 | Manufacturing method of headrest stay |
-
2019
- 2019-06-27 JP JP2019120338A patent/JP2021004020A/en active Pending
-
2020
- 2020-06-24 CN CN202010590322.1A patent/CN112140961A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555941U (en) * | 1991-12-27 | 1993-07-27 | 東京シート株式会社 | Vehicle headrest |
| JPH11115596A (en) * | 1997-10-21 | 1999-04-27 | Suzuki Motor Corp | Seat belt holder |
| JP2006304869A (en) * | 2005-04-26 | 2006-11-09 | Arai Seisakusho:Kk | Method of manufacturing headrest stay |
| JP2016165968A (en) * | 2015-03-10 | 2016-09-15 | トヨタ紡織株式会社 | Manufacturing method of headrest stay |
| CN105962678A (en) * | 2015-03-10 | 2016-09-28 | 丰田纺织株式会社 | Method for manufacturing headrest stay |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021004020A (en) | 2021-01-14 |
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Application publication date: 20201229 |