JP6141723B2 - Armrest mounting bracket and armrest - Google Patents

Description

  The present invention relates to an armrest mounting bracket provided on a vehicle seat on which an occupant is seated and an armrest provided with the armrest mounting bracket.

  The armrest disclosed in the following Patent Document 1 includes an armrest mounting bracket that is attached to a side frame of a seat back while rotatably supporting an armrest body.

JP 2010-167022 A

  However, in the armrest shown in Patent Document 1, an armrest mounting bracket is formed by bending a single plate. For this reason, when reinforcing the armrest mounting bracket, it is necessary to weld a reinforcing plate to the armrest mounting portion of the armrest mounting bracket or to form a reinforcing rib. However, when arc welding the reinforcing plate, the armrest mounting bracket is increased in size because it is necessary to secure a working space. On the other hand, when the reinforcing rib is formed, the productivity of the armrest mounting bracket is lowered because the press process is increased.

  In view of the above facts, the present invention has an object to provide an armrest mounting bracket and an armrest that can be reduced in size and improved in productivity.

The armrest mounting bracket according to claim 1 is bent at a first armrest mounting portion to which an armrest main body is mounted, and an edge portion of the first armrest mounting portion, and is welded to a seat back frame side portion of a vehicle seat. A first mounting bracket having one welded portion, a second armrest mounting portion overlapping the first armrest mounting portion of the first mounting bracket from the seat width direction, and bent from an edge of the second armrest mounting portion. And a second mounting bracket having a second welded portion welded to the side portion of the seat back frame.

According to the above configuration, the armrest mounting bracket includes the first mounting bracket and the second mounting bracket. Further, the first armrest mounting portion of the first mounting bracket and the second armrest mounting portion of the second mounting bracket are overlapped from the seat width direction. For this reason, since the armrest attachment part which attaches an armrest main body becomes a double structure, since an armrest attachment part can be easily reinforced, productivity improves. Moreover, the 1st armrest attaching part and 2nd armrest attaching part which were piled up can be easily couple | bonded by laser welding from the one side of a sheet | seat width direction. Therefore, the need to secure a space for welding such no longer becomes possible to reduce the size of the armrest mounting bracket as in the case of performing the arc welding.

Armrest mounting bracket according to claim 2, in armrest mounting bracket according to claim 1, the first through-hole formed in the first armrest attachment portion, is formed in the second armrest attachment portion, said first It is welded to a coaxial position between the second through hole coaxial with the first through hole and smaller in diameter than the first through hole, and the second through hole in the second armrest mounting portion, so that the armrest body can be rotated. A fastening member to be supported.

  According to the above configuration, in the first through hole formed in the first armrest mounting portion, the second armrest mounting portion is formed in the second armrest mounting portion, is coaxial with the first through hole, and has a smaller diameter than the first through hole. A fastening member that rotatably supports the armrest body at a position coaxial with the second through hole can be welded to the outer peripheral portion of the through hole by laser welding. For this reason, the productivity of the armrest mounting bracket is further improved.

The armrest according to claim 3 is an armrest mounting bracket according to claim 1 or claim 2, an armrest body mounted on the first armrest mounting portion and the second armrest mounting portion of the armrest mounting bracket, Is provided.

  According to the said structure, since the armrest mounting bracket of Claim 1 or Claim 2 is provided, there exists an effect as mentioned above.

  As described above, according to the present invention, an armrest mounting bracket and an armrest that can be reduced in size and improved in productivity can be obtained.

It is the perspective view seen from the seat width direction slanting outer back which shows the armrest attachment bracket concerning one embodiment of the present invention. It is the perspective view seen from the seat width direction diagonally inner upper side which shows the armrest attachment bracket which concerns on one Embodiment of this invention. It is the top view seen from the sheet width direction outside which shows the armrest attachment bracket concerning one embodiment of the present invention. It is the top view seen from the seat width direction inner side which shows the armrest attachment bracket which concerns on one Embodiment of this invention. FIG. 5 is a cross-sectional view taken along a line 5-5 in FIG. 4. It is the top view seen from the seat width direction inner side which shows the armrest frame of the armrest main body which concerns on one Embodiment of this invention. It is the disassembled perspective view seen from the seat width direction diagonally outer back which shows the armrest which concerns on one Embodiment of this invention. It is the top view seen from the seat width direction inner side which shows the attachment to the seat back frame of the armrest attachment bracket which concerns on one Embodiment of this invention.

  Next, an armrest mounting bracket and an armrest provided with the armrest mounting bracket according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8, the arrow RR indicates the rear of the vehicle seat on which the armrest is attached, the arrow FR indicates the front of the vehicle seat on which the armrest is attached, and the arrow IN indicates the width direction of the vehicle seat. The arrow UP indicates the upper side of the vehicle seat.

  As shown in FIG. 7, the armrest 10 of the present embodiment includes an armrest mounting bracket 12 that is fixed to a side portion of a seat back frame of a vehicle seat, and an armrest body 13 that is mounted to the armrest mounting bracket 12. Yes.

(Armrest mounting bracket)
The armrest mounting bracket 12 includes a first mounting bracket 14 and a second mounting bracket 16, and is composed of two parts. The first mounting bracket 14 is formed with a first armrest mounting portion 14A. The first armrest mounting portion 14A has a shape viewed from the seat width direction in which the seat vertical direction is the longitudinal direction, and the width along the upper seat longitudinal direction as compared to the width along the lower seat longitudinal direction. Has a narrow rectangular shape. In addition, a rear first welded portion 14B as a first welded portion bent toward the inner side in the seat width direction is formed at the seat rear side edge of the first armrest attaching portion 14A. A front first welded portion 14C as a first welded portion bent toward the inner side in the seat width direction is formed at a substantially half portion on the upper side of the seat front side edge of the portion 14A.

  The second mounting bracket 16 is formed with a second armrest mounting portion 16A. The second armrest mounting portion 16A has a shape as viewed from the seat width direction with the seat vertical direction as the longitudinal direction, and a width along the upper seat longitudinal direction as compared to the width along the lower seat longitudinal direction. Has a narrow rectangular shape. Further, a second welded portion 16B that is bent toward the inner side in the seat width direction is formed at the lower edge of the seat of the second armrest mounting portion 16A.

  As shown in FIGS. 1 to 4, the second armrest mounting portion 16 </ b> A of the second mounting bracket 16 is overlapped on the outer side in the seat width direction of the first armrest mounting portion 14 </ b> A of the first mounting bracket 14. Further, as shown in FIG. 3, the first armrest mounting portion 14A and the second armrest mounting portion 16A are laser welded from the outside in the seat width direction (second mounting bracket 16 side) as indicated by broken lines LBW1 to LBW1. Are bound by. In addition, laser welding LBW1 is performed to the site | part along the upper part of the sheet | seat front side edge part of 16 A of 2nd armrest attachment parts. Further, the laser welding LBW2 is performed substantially parallel to the laser welding LBW1 at a portion along the upper part of the seat rear side edge portion of the second armrest mounting portion 16A. Furthermore, laser welding LBW3 is performed along the front-rear direction of the sheet from a portion near the lower end of laser welding LBW1 to a portion near the lower end of laser welding LBW2.

  As shown in FIG. 7, a circular first through hole 20 is formed at a substantially central portion of the first armrest mounting portion 14 </ b> A of the first mounting bracket 14. On the other hand, a second through hole 22 is formed in a portion coaxial with the first through hole 20 in the second mounting bracket 16 and the second armrest mounting portion 16A.

  As shown in FIG. 5, the hole diameter R <b> 2 of the second through hole 22 is smaller than the hole diameter R <b> 1 of the first through hole 20. Further, a nut 26 as a fastening member is welded to the second through hole 22 at a coaxial position on the surface of the second armrest mounting portion 16A of the second mounting bracket 16 on the first armrest mounting portion 14A side. The nut 26 has a ring-shaped flange portion 26 </ b> A formed at one end, and the flange portion 26 </ b> A is inserted into the first through hole 20. In addition, as shown by a broken line LBW4 in FIG. 3, the flange portion 26A is entirely outside the second armrest attachment portion 16A of the second attachment bracket 16 in the seat width direction inside the first through hole 20 (second They are joined by laser welding from the mounting bracket 16 side.

(Armrest body)
As shown in FIG. 7, the armrest body 13 includes an armrest frame 30, a first reinforcing bracket 34, and a second reinforcing bracket 36. Although not shown, a resin cover, a cushion material, a skin material, or the like is attached to the outside of the armrest frame 30. Thus, an armrest body 13 is formed, and an arm of a passenger seated on the vehicle seat can be placed on the armrest body 13.

  A circular through hole 32 is formed in the base end side portion (lower side portion in FIG. 7) 30A in the longitudinal direction of the armrest frame 30, and a linear opening for laser welding is formed in the outer peripheral portion of the through hole 32. A plurality of portions 33 are formed. Further, a first reinforcing bracket 34 and a second reinforcing bracket 36 are provided on the inner side surface in the seat width direction of the base end side portion 30 </ b> A of the armrest frame 30. The first reinforcing bracket 34 is overlapped over substantially the entire region of the base end side portion 30 </ b> A of the armrest frame 30, and a through hole 38 is formed coaxially with the through hole 32 in the approximate center of the first reinforcing bracket 34. . The second reinforcing bracket 36 is overlapped with the center portion of the inner surface of the first reinforcing bracket 34 in the seat width direction, and a through hole 40 is coaxial with the through hole 32 at the approximate center of the second reinforcing bracket 36. Is formed.

  As shown in FIG. 6, the base end side portion 30 </ b> A of the armrest frame 30 and the first reinforcing bracket 34 are inside in the seat width direction (on the first reinforcing bracket 34 side), as indicated by broken lines LBW5 to 8 in FIG. 6. Are joined by laser welding. The laser welding LBW5 is performed at a site along the seat rear side edge of the first reinforcement bracket 34, and the laser welding LBW6 is performed at a site along the seat upper side edge of the first reinforcement bracket 34. It has been broken. Further, the laser welding LBW7 is performed at a site along the seat front side edge of the first reinforcement bracket 34, and the laser welding LBW8 is performed at a site along the seat lower side edge of the first reinforcement bracket 34. It has been broken.

  On the other hand, the first reinforcing bracket 34 and the second reinforcing bracket 36 are joined by laser welding from the outside in the seat width direction (first reinforcing bracket 34), as indicated by broken lines LBW9-12 in FIG. In addition, laser welding LBW9-12 is each performed in the site | part inside the opening part 33 formed in 30 A of base end side parts of the armrest frame 30. As shown in FIG.

  As shown in FIG. 7, a bolt 46 serving as a rotation shaft of the armrest body 13 is seated in the through hole 32 of the armrest frame 30, the through hole 38 of the first reinforcement bracket 34, and the through hole 40 of the second reinforcement bracket 36. Inserted from the outside in the direction. The bolt 46 is inserted into a washer 48 interposed on the outer side in the seat width direction of the armrest frame 30 and a washer 50 with a flange inserted into the through hole 40 and the through hole 38 from the inner side in the seat width direction, and is fastened to the nut 26. ing.

  A wall portion 30 </ b> B is formed on the outer periphery of the armrest frame 30 toward the outer side in the seat width direction. A lock mechanism (not shown) is provided on the base end side portion 30A inside the wall portion 30B of the armrest frame 30. For this reason, the distal end side portion 30C of the armrest frame 30 can be rotated in the seat front-rear direction around the proximal end side portion 30A and can be locked at a desired rotational position.

  Further, in the present embodiment, as shown in FIG. 8, the sheet width direction inner end 14D of the rear first welded portion 14B, the sheet width direction inner end 14E of the front first welded portion 14C, and the second welded portion 16B. The inner end 16C in the seat width direction is on the outer side surface in the seat width direction of the side portion 60A of the seat back frame 60, as indicated by broken lines LBW13 to 15 in FIG. Are joined by laser welding. The laser welding LBW 13 is performed at a portion along the seat rear side edge of the side portion 60A of the seat back frame 60, and the laser welding LBW 14 is performed on the seat front side edge of the side portion 60A of the seat back frame 60. It is done at the site along. Further, the laser welding LBW 15 is performed on the side portion 60A of the seat back frame 60 along the front-rear direction of the seat.

  1 to 5 and 7 indicates a pin having a flange 52A at one end. As shown in FIG. 5, the pin 52 is formed on the inner side in the seat width direction (first direction) through the circular through hole 54 formed in the first armrest mounting portion 14A and the through hole 56 formed in the second armrest mounting portion 16A. 1 from the mounting bracket 14 side). Further, the through hole 54 is smaller than the through hole 56, and the flange portion 52A of the pin 52, as indicated by a broken line LBW16 in FIG. Are joined by laser welding from the outside in the sheet width direction (second mounting bracket 16 side).

(Function, effect)
Next, the operation and effect of this embodiment will be described.
In this embodiment, the armrest mounting bracket 12 of the armrest 10 includes a first mounting bracket 14 and a second mounting bracket 16, and is composed of two parts. Further, the first armrest mounting portion 14A of the first mounting bracket 14 and the second armrest mounting portion 16A of the second mounting bracket 16 are overlapped from the seat width direction.

For this reason, armrest attaching part 14A, 16A of the armrest attaching bracket 12 which attaches the armrest main body 13 can be made into a double structure. As a result, the armrest mounting portions 14A and 16A of the armrest mounting bracket 12 can be easily reinforced, and the productivity is improved as compared with the configuration in which the reinforcing ribs are formed on the armrest mounting portions 14A and 16A of the armrest mounting bracket 12 . Further, since a deep drawing process or the like for forming the reinforcing rib is not required, a high-strength steel plate can be used. As a result, the armrest mounting bracket 12 can be further reduced in thickness and weight.

  Further, in the present embodiment, as shown in LBW1 to LBW3 of FIG. 3, the overlapped first armrest mounting portion 14A and second armrest mounting portion 16A are seated in the seat width direction outside (second mounting bracket 16 side) by laser welding. ) Can be easily combined. For this reason, it is necessary to secure a welding space as in the case of arc welding, and the armrest mounting bracket 12 can be downsized.

  In the present embodiment, the hole diameter R2 of the second through hole 22 of the second armrest mounting portion 16A is smaller than the hole diameter R1 of the first through hole 20 of the first armrest mounting portion 14A. The part 26 </ b> A is inserted into the first through hole 20. Then, as shown in LBW4 of FIG. 3, the flange portion 26A of the nut 26 is seated on the outer periphery of the second through hole of the second armrest mounting portion 16A inside the first through hole 20 of the first armrest mounting portion 14A. It can be easily welded by laser welding from the outside in the width direction (second mounting bracket 16 side). For this reason, the productivity of the armrest mounting bracket 12 is further improved.

  Further, in the present embodiment, the rear first welded portion 14B, the front first welded portion 14C of the first mounting bracket 14 and the second welded portion 16B of the second mounting bracket 16 are the side portions of the seat back frame 60. As shown by broken lines LBW13 to 15 in FIG. 8, it is joined to the outer surface in the seat width direction of 60A by laser welding from the inner side in the seat width direction (the seat back frame 60 side). Therefore, laser welding of the first mounting bracket 14 and the second mounting bracket 14 for manufacturing the armrest mounting bracket 12, laser welding of the nut 26 to the armrest mounting bracket 12, and a seat back frame of the armrest mounting bracket 12 The laser welding of the 60 side portions 60A can be performed in one step using the same laser welding jig. As a result, the productivity of the armrest 10 is further improved.

(Supplementary explanation of the embodiment)
While the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to the above-described embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, in the above embodiment, the nut 26 as a fastening member is welded to the second armrest mounting portion 16A of the second mounting bracket 16, but the fastening member is not limited to the nut 26, and other fastening members such as bolts are welded. May be.

  Moreover, in the said embodiment, although the nut 26 as a fastening member was welded to the 2nd armrest attachment part 16A of the 2nd attachment bracket 16, the fastening member is welded to the 1st armrest attachment part 14A of the 1st attachment bracket 14. It is good.

  Moreover, in the said embodiment, the back side 1st welding part 14B is formed in the sheet | seat back side edge part of 14 A of 1st armrest attachment parts of the 1st attachment bracket 14, and the sheet | seat front side edge part of 14 A of 1st armrest attachment parts is formed. The front first welded portion 14C was formed in a substantially upper half of the upper side. Instead of this, the first welded portion may be formed in other portions such as the seat upper side edge and the seat lower side edge of the first armrest mounting portion 14A of the first mounting bracket 14.

  Moreover, in the said embodiment, the 2nd welding part 16B was formed in the sheet | seat lower side edge part of 16 A of 2nd armrest attachment parts of the 2nd attachment bracket 16. FIG. Instead of this, as a configuration in which the second welding portion is formed in other parts such as the seat rear side edge, the seat front side edge, the seat upper side edge of the second armrest mounting portion 16A of the second mounting bracket 16. Also good.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 10 Headrest 12 Armrest attachment bracket 13 Armrest main body 14 1st attachment bracket 14A 1st armrest attachment part 14B Rear side 1st welding part (1st welding part)
14C front first weld (first weld)
16 2nd attachment bracket 16A 2nd armrest attachment part 16B 2nd welding part 20 1st through-hole 22 2nd through-hole 26 Nut (fastening member)
30 Armrest frame 34 1st reinforcement bracket 36 2nd reinforcement bracket 46 Bolt 60 Seat back frame LBW1-16 Laser welding part

Claims (3)

A first attachment having a first armrest attachment portion to which an armrest body is attached, and a first welding portion bent from an edge portion of the first armrest attachment portion and laser-welded to a side portion of a seat back frame of a vehicle seat. A bracket,
A second armrest mounting portion that overlaps the first armrest mounting portion of the first mounting bracket from the seat width direction, a second armrest mounting portion that is bent from an edge of the second armrest mounting portion, and laser welded to the side portion of the seatback frame. A second mounting bracket having two welds;
Armrest mounting bracket comprising. A first through hole formed in the first armrest mounting portion;
It formed in the second armrest attachment portion, and the second through hole of smaller diameter than the first through-hole and and the first through-hole on the same axis,
A fastening member that is welded to a coaxial position with the second through-hole in the second armrest mounting portion, and rotatably supports the armrest body;
The armrest mounting bracket according to claim 1, comprising: The armrest mounting bracket according to claim 1 or 2,
An armrest body attached to the first armrest attachment portion and the second armrest attachment portion of the armrest attachment bracket;
Armrest equipped with.