WO2023100941A1

WO2023100941A1 - Vehicle seat

Info

Publication number: WO2023100941A1
Application number: PCT/JP2022/044212
Authority: WO
Inventors: 亘平塚; 司目黒
Original assignee: テイ・エステック株式会社
Priority date: 2021-11-30
Filing date: 2022-11-30
Publication date: 2023-06-08
Also published as: JPWO2023100941A1

Abstract

[Problem] To suppress a displacement of a pad with respect to a seatback frame in a vehicle seat. [Solution] A vehicle seat 3 includes a seatback frame 11, a pad 16, and a locking device 34 which is provided on the seatback frame and which detachably engages with an engaging protrusion 33 provided on the vehicle body or an adjacent seat 2. The seatback frame has left and right side members 21 that extend vertically to form left and right side portions of the seatback. The locking device has a groove-shaped bracket 41 which is coupled to the side member to form an accommodating space 37 between the bracket and the side member, an insertion hole 42 which is formed in the bracket and through which the engaging protrusion passes, and a hook 43 which is supported to turn on the surface of the bracket on the accommodating space side and which engages with the engaging protrusion inside the accommodating space. The bracket has a pad-supporting part 51 that bulges forward, and the pad has a recess 58 for receiving the pad-supporting part.

Description

vehicle seat

The present invention relates to a vehicle seat.

Patent Document 1 discloses a vehicle seat that fixes the position of the seat back by detachably connecting the seat back to the vehicle body. A vehicle body is provided with a striker, and a seat back is provided with a lock device that is detachably engaged with the striker. The locking device has a strap for manipulation by the user. The strap is pulled out from the upper end of the seatback. The locking device is covered with a pad and skin material that constitute the seat back.

JP 2021-14193 A

If the strap extends to the upper end of the seatback, the locking device will occupy a relatively large space within the seatback. Therefore, depending on the shape of the locking device, the pad may be displaced with respect to the locking device and the seatback frame, resulting in deformation of the seatback.

In view of the above background, an object of the present invention is to suppress displacement of a pad with respect to a seatback frame in a vehicle seat.

In order to solve the above problems, one aspect of the present invention is a vehicle seat (3) comprising a seat back frame (11) forming a frame of a seat back (6), and a seat back frame (11) supported by the seat back frame (11). and a locking device (34) provided on the seat back frame and detachably engaged with an engaging protrusion (33) provided on the vehicle body or the adjacent seat (2), The seatback frame has left and right side members (21) that extend vertically and constitute left and right side portions of the seatback, and the lock device is coupled to the side members and is spaced between the side members. an insertion hole (42) formed in the bracket through which the engaging projection passes; It has a hook (43) that is movably supported and engages with the engaging projection in the housing space, the bracket has a pad support part (51) that bulges forward, has a recess (58) for receiving said pad support.

According to this aspect, the bracket is engaged with the pad by the pad support provided on the bracket protruding into the recess provided on the pad. Accordingly, displacement of the pad with respect to the seat back frame can be suppressed in the vehicle seat.

In the above aspect, the side member includes a side member lower portion (27) extending in the vertical direction, a side member intermediate portion (28) extending inward of the seatback in the left-right direction from the upper end of the side member lower portion, a side member upper portion (29) extending upward from the upper end of the side member intermediate portion; and the bracket extends vertically to each of the side member lower portion, the side member intermediate portion, and the side member upper portion. and the accommodation space may be formed laterally of the upper portion of the side member and above the intermediate portion of the side member.

According to this aspect, the bracket can reinforce the side member. Since the side member is formed in a crank shape by the side member intermediate portion, and the bracket straddles the side member intermediate portion and is coupled to the side member lower portion and the side member upper portion, the rigidity of the side member is improved.

In the above aspect, the side member intermediate portion may extend inwardly and upwardly of the seatback in the left-right direction from the upper end of the side member lower portion.

According to this aspect, the rigidity of the side member is improved.

In the above aspect, the side member lower portion, the side member intermediate portion, and the side member upper portion may be formed of a continuous pipe material.

According to this aspect, the structure of the side member can be simplified.

In the above aspect, an outlet (49) is formed between the upper edge of the bracket and the upper part of the side member, a strap (71) is coupled to the hook, and the strap passes through the outlet. and extend outward from the upper end of the seat back.

According to this aspect, the strap can be pulled out from the upper end of the seat back.

In the above aspect, the hook may be arranged on the back side of the pad support.

According to this aspect, since the housing space is expanded forward and backward by the pad supporting portion, it is possible to secure a space for arranging the hook.

In the above aspect, the pad support portion may protrude forward from the upper portion of the side member.

According to this aspect, since the pad supporting portion can be reliably engaged with the pad, displacement of the pad with respect to the seatback frame is further suppressed.

In the above aspect, the bracket includes a side plate portion (45) whose surface faces left and right, a rear plate portion (46) extending inward of the seatback in the left-right direction from the rear edge of the side plate portion, and the side plate portion. and a front plate portion (47) extending inward of the seatback in the left-right direction from the front edge of the seat back, and the pad support portion may bulge forward from the front plate portion.

In the above aspect, each of the front plate portion and the rear plate portion is welded to each of the side member upper portion, the side member intermediate portion, and the side member lower portion, and the lower end of the side plate portion is welded to the side member lower portion. may be welded to

According to this aspect, the rigidity of the side member can be improved by the bracket.

In the above aspect, the pad supporting portion has a planar end portion (52) facing in the front-rear direction, and a plate-like plate portion extending obliquely upward and rearward from the upper end of the end portion and connected to the front plate portion. It may have an upper sloped portion (53) and a plate-like lower sloped portion (54) extending downwardly and rearwardly from the lower end of the front plate portion and connected to the front plate portion.

According to this aspect, the rigidity of the bracket can be improved.

One aspect of the present invention is a vehicle seat (3) comprising a seat back frame (11) forming a framework of a seat back (6), a pad (16) supported by the seat back frame, and The seat back frame has a lock device (34) which is provided on the seat back frame and detachably engages with an engaging protrusion (33) provided on the vehicle body or the adjacent seat (2), the seat back frame being vertically movable. It has left and right side members (21) extending to form left and right side portions of the seatback, and the lock device is coupled to the side members to form a storage space (37) between the side members. an insertion hole (42) formed in the bracket through which the engaging protrusion passes; The bracket has a hook (43) that engages with the engaging protrusion in the space, the bracket has a pad support (51) that bulges forward, and the pad receives the pad support. It has a recess (58).

According to this aspect, the rigidity of the side member is improved.

According to this aspect, the structure of the side member can be simplified.

According to this aspect, the rigidity of the bracket can be improved.

1 is a perspective view of a vehicle seat according to an embodiment; Perspective view of the upper part of the seat back frame Perspective view of bracket Sectional view of locking device

An embodiment in which a vehicle seat according to the present invention is applied to a rear seat of an automobile will be described below with reference to the drawings. The rear seat may be the second or third row seat of the automobile.

As shown in FIG. 1, a rear seat 1 of an automobile has a left seat 2 that constitutes a left seat, and a right seat 3 that constitutes a right seat and a center seat. Each

seat

2, 3 has a seat cushion 5 provided on the floor of the automobile, a seat back 6 rotatably supported by the seat cushion 5, and a headrest 7 provided above the seat back 6. - 特許庁Each seat cushion 5 has a seat cushion frame forming a skeleton, a pad 12 supported by the seat cushion frame, and a skin material 13 covering the pad 12 . As shown in FIGS. 1 and 2, each seat cushion 5 has a seat back frame 15 forming a skeleton, a pad 16 supported by the seat back frame 15, and a skin material 17 covering the pad 16. .

As shown in FIG. 1, the seat cushions 5 of the right seat 3 and the left seat 2 are supported by the floor. Each seat cushion 5 may be fixed to the floor or supported movably with respect to the floor. For example, the seat cushion 5 may be provided so as to be able to move forward and downward with respect to the floor, that is, to be able to dive down. The seat cushion 5 of the right seat 3 and the seat cushion 5 of the left seat 2 may be integrally formed.

The lower end of each seat back 6 is rotatably provided at the rear end of the seat cushion 5 via a rotating device 18 . The pivoting device 18 holds the seat back 6 at least in the use position and the folded position. The seat back 6 extends upward from the rear end of the seat cushion 5 when the seat back 6 is in the use position. The seat back 6 extends forward from the rear end of the seat cushion 5 and overlaps the seat cushion 5 when the seat back 6 is in the folded position. The rotating device 18 may hold the seat back 6 at any angle with respect to the seat cushion 5 .

As shown in FIG. 2 , the seatback frames 15 of the left seat 2 and the right seat 3 have left and right side members 21 that extend vertically and form left and right side portions of the seatback 6 . Moreover, the seat back frame 15 has an upper member 22 extending in the left and right direction and coupled to the upper ends of the left and right side members 21 . Further, the seat back frame 15 may have a lower member extending in the left and right direction and coupled to the lower portions of the left and right side members 21 . The lower ends of the left and right side members 21 are connected to the seat cushion frame via a rotating device 18 . A plate-shaped pan frame 25 may be coupled to the rear portion of each of the left and right side members 21 and the upper member 22 .

The left side member 21 of the right seat 3 includes a side member lower portion 27 extending in the vertical direction, a side member intermediate portion 28 extending inward of the seat back 6 in the left-right direction from the upper end of the side member lower portion 27, and a side member intermediate portion and a side member upper portion 29 extending upwardly from the upper end of portion 28 . The side member intermediate portion 28 extends from the upper end of the side member lower portion 27 toward the inside of the seatback 6 in the left-right direction and inclined upward. The side member lower portion 27, the side member intermediate portion 28, and the side member upper portion 29 are formed of a continuous metallic pipe material. The side member 21 may be formed of a sheet metal member like the left seat 2 .

The upper member 22 of the right seat 3 is preferably formed of a plate-like member whose surface faces forward and backward. Reinforcement beads 31 extending in the left-right direction are preferably formed on the upper and lower portions of the upper member 22 . It is preferable that rear portions of the upper ends of the left and right side members 21 are coupled to the front surface of the upper member 22 . Left and right headrest support portions 32 for supporting the headrest of the center seat are provided on the front surface of the upper member 22 between the left and right side members 21 . The upper member 22 may be made of a pipe material like the left seat 2 .

The seatback frame 15 is provided with a locking device 34 that detachably engages with an engaging projection 33 provided on the vehicle body or the adjacent seat. The engaging protrusion 33 may have a shaft 33A projecting in the left-right direction from the vehicle body or the adjacent seat. In this embodiment, the locking device 34 is provided at the left end of the seat back 6 of the right seat 3, and the engaging projection 33 is provided at the right end of the seat back 6 of the left seat 2, which is the adjacent seat. The engaging protrusion 33 protrudes rightward from the right end of the seat back 6 of the left seat 2 . In another embodiment, the engagement protrusion 33 may be formed by a portion of a rod-like member bent into a U-shape. The engaging projection 33 may be coupled to the seat back frame 15 of the left seat 2, pass through the pad 16 and the upholstery 17, and protrude rightward. The tip of the shaft 33A may be provided with an enlarged head 33B having a width larger than that of the shaft 33A.

As shown in FIGS. 2 to 4, the locking device 34 provided on the right seat 3 is coupled to the left side member 21 and includes a groove-shaped bracket 41 that forms an accommodation space 37 between itself and the side member 21 . , an insertion hole 42 formed in the bracket 41 through which the engaging convex portion 33 passes, and a surface of the bracket 41 facing the housing space 37 so as to be rotatable and engaged with the engaging convex portion 33 in the housing space 37. It has a hook 43 for connecting. The bracket 41 and the hook 43 are preferably made of sheet metal members.

As shown in FIGS. 2 and 4, the bracket 41 is coupled to the left side member 21 in this embodiment. The bracket 41 extends vertically and is coupled to each of the side member lower portion 27 , the side member intermediate portion 28 and the side member upper portion 29 . The bracket 41 includes a side plate portion 45 whose surface faces left and right, a rear plate portion 46 extending inward from the seat back 6 in the left and right direction from the rear edge of the side plate portion 45, and a seat back portion extending from the front edge of the side plate portion 45 in the left and right direction. 6 and an inwardly extending front plate portion 47 . The side plate portion 45 is arranged to the left of the left side member 21 . The front plate portion 47 and the rear plate portion 46 are arranged parallel to each other with a space therebetween.

The right edge of the rear plate portion 46 is arranged behind the left side member 21 . A right edge of the front plate portion 47 is arranged in front of the left side member 21 . The front plate portion 47 and the rear plate portion 46 are welded to the side member upper portion 29, the side member intermediate portion 28, and the side member lower portion 27, respectively. Specifically, the right edge of the front plate portion 47 and the right edge of the rear plate portion 46 are welded to the side member upper portion 29, the side member intermediate portion 28, and the side member lower portion 27, respectively. A lower end of the side plate portion 45 is welded to the side member lower portion 27 .

The accommodation space 37 is formed laterally of the side member upper portion 29 and above the side member intermediate portion 28 . The accommodation space 37 is formed by the side member upper portion 29 , the side member intermediate portion 28 , the side plate portion 45 , the rear plate portion 46 and the front plate portion 47 . A drawer port 49 is formed between the upper edge of the bracket 41 and the side member upper portion 29 . The accommodation space 37 extends vertically and opens upward.

The bracket 41 has a pad support portion 51 that bulges forward. The pad support portion 51 protrudes forward from the front plate portion 47 . The pad support portion 51 includes a flat end portion 52 facing in the front-rear direction, a plate-like upper inclined portion 53 extending upward and rearward from the upper end of the end portion 52 and connected to the front plate portion 47, and a front portion. It has a plate-like lower inclined portion 54 extending downward and rearward from the lower end of the plate portion 47 and connected to the front plate portion 47 . Each of the end portion 52 , the upper inclined portion 53 , and the lower inclined portion 54 extends in the left-right direction and reaches both left and right ends of the front plate portion 47 . The pad support portion 51 protrudes forward from the side member upper portion 29 . The side plate portion 45 has an extension portion 56 extending forward corresponding to the pad support portion 51 .

As shown in FIG. 4, the pad 16 of the right seat 3 has a recessed portion 58 that receives the pad support portion 51 . The recess 58 is recessed forward from the rear surface of the pad 16 . The concave portion 58 has a shape complementary to that of the pad support portion 51 . By fitting the pad supporting portion 51 into the concave portion 58, relative movement of the pad 16 with respect to the bracket 41 in the vertical direction and the horizontal direction is prohibited.

The hook 43 is rotatably supported on the right side surface of the side plate portion 45 about an axis extending in the left-right direction. The hook 43 has a proximal end 61 rotatably supported by the side plate portion 45 and a distal end 63 in which a locking groove 62 is formed. The hook 43 is rotatable between a locked position and a released position in which the tip 63 is rotated upward with respect to the locked position. When the hook 43 is in the locked position, the locking groove 62 extends vertically and opens downward. Hook 43 is biased to the locked position by spring 44 .

The hook 43 is arranged on the back side of the pad support portion 51 . The hook 43 is arranged behind the pad support portion 51 when viewed in the left-right direction. The proximal end 61 of the hook 43 is preferably rotatably supported by the extended portion 56 of the side plate portion 45 . The base end 61 of the hook 43 is preferably arranged between the upper inclined portion 53 and the lower inclined portion 54 when viewed in the left-right direction. A guide surface 65 inclined upward toward the rear is formed at the lower portion of the tip 63 of the hook 43 .

As shown in FIG. 3, the insertion hole 42 has a first portion 67 passing through the side plate portion 45 in the thickness direction and a second portion 68 passing through the rear plate portion 46 in the thickness direction. The first portion 67 extends in the front-rear direction and reaches the rear edge of the side plate portion 45 . The second portion 68 extends in the left-right direction, reaches the left edge of the rear plate portion 46 , and is continuous with the first portion 67 . The right end of the second portion 68 is provided with an enlarged portion 69 through which the enlarged portion 33B can pass. When the hook 43 is in the locked position, the hook 43 overlaps the first portion 67 and the locking groove 62 intersects the first portion 67 when viewed in the left-right direction. When the hook 43 is at the released position, the locking groove 62 is positioned above the first portion 67 as viewed in the left-right direction.

A strap 71 is coupled to the hook 43 as shown in FIGS. The strap 71 is preferably connected to the hook 43 via the strap locking portion 72 . The strap locking portion 72 preferably has a ring portion on which the strap 71 is hooked. The strap locking portion 72 is preferably locked to the hook 43 by a locking claw.

The strap 71 extends upward from the hook 43 in the housing space 37, passes through the outlet 49, and is pulled out above the bracket 41. A connection port 74 that connects to the outlet 49 is formed in the pad 16 and the skin material 17 . The connection port 74 vertically penetrates the pad 16 and the skin material 17 . A grommet 75 is attached to the upper end of the connection port 74 . Grommet 75 may be coupled to skin material 17 . The strap 71 extends outside from the upper end of the seat back 6 through the drawer opening 49 , the connection opening 74 and the grommet 75 . Grommet 75 prevents strap 71 from contacting pad 16 and upholstery 17 .

As shown in FIG. 4 , a grommet 78 may be provided on the edge of the outlet 49 , that is, the upper edge of the bracket 41 . Grommet 78 prevents contact between strap 71 and the edge of outlet 49 , ie, the upper edge of bracket 41 . In other embodiments, the upper end of bracket 41 may be curved outwardly to prevent strap 71 from contacting the upper edge of bracket 41 . For example, by curving the upper end of the rear plate portion 46 backward, contact between the strap 71 and the upper edge of the rear plate portion 46 is avoided.

Around the insertion hole 42 , the pad 16 is omitted, and the skin material 17 is in contact with the side plate portion 45 and the rear plate portion 46 of the bracket 41 . A cover 81 is attached to the outer surface of the skin material 17 around the insertion hole 42 . A through hole 82 connected to the through hole 42 is formed in the cover 81 and the skin material 17 . The cover 81 is preferably connected to the side plate portion 45 and the rear plate portion 46 of the bracket 41 through the skin material 17 .

Next, the action of the right seat 3 will be explained. As shown in FIG. 2, when the seat back 6 of the left seat 2 is in the use position and the seat back 6 of the right seat 3 is in the folded position, the seat back 6 of the right seat 3 is moved to the use position. The engaging convex portion 33 provided on the seat 2 passes through the through hole 82 and the insertion hole 42 and moves into the accommodation space 37 . At this time, the shaft 33A of the engaging protrusion 33 pushes the guide surface 65 of the hook 43, and the hook 43 rotates from the lock position to the release position. When the shaft 33A goes over the guide surface 65, the hook 43 is returned to the locked position by the biasing force of the spring 44, and the shaft 33A is received in the locking groove 62. As a result, the shaft 33A is locked by the hook 43. As shown in FIG. That is, the lock device 34 locks the engaging protrusion 33 . As a result, the seat back 6 of the right seat 3 cannot move relative to the seat back 6 of the left seat 2 .

The user can unlock the locking device 34 by pulling the strap 71 . When the strap 71 is pulled, the hook 43 rotates against the biasing force of the spring 44 to the release position. In this state, the shaft 33A is released from the locking groove 62 and can be removed from the insertion hole 42. As shown in FIG.

In the right seat 3 , the bracket 41 is engaged with the pad 16 by the pad support portion 51 provided on the bracket 41 protruding into the recessed portion 58 provided on the pad 16 . As a result, displacement of the pad 16 with respect to the seat back frame 15 can be suppressed in the right seat 3 . Since the pad support portion 51 protrudes forward from the side member upper portion 29 , the pad support portion 51 can reliably engage with the pad 16 . As a result, displacement of the pad 16 with respect to the seat back frame 15 is further suppressed.

The bracket 41 can reinforce the side member 21. The front plate portion 47 and the rear plate portion 46 are welded to the side member upper portion 29, the side member intermediate portion 28, and the side member lower portion 27, respectively, and the lower end of the side plate portion 45 is welded to the side member lower portion 27. Therefore, the bracket 41 can improve the rigidity of the side member 21 .

Since the side member 21 is formed in a crank shape by the side member intermediate portion 28 and the bracket 41 is connected to the side member lower portion 27 and the side member upper portion 29 across the side member intermediate portion 28, the rigidity of the side member 21 is increased. improves. Since the side member intermediate portion 28 extends from the upper end of the side member lower portion 27 toward the inside of the seat back 6 in the left-right direction and inclined upward, the rigidity of the side member 21 is further improved.

A side member lower portion 27, a side member intermediate portion 28, and a side member upper portion 29 are formed of a continuous pipe material. Thereby, the structure of the side member 21 can be simplified.

Since the accommodation space 37 is expanded forward and backward by the pad support portion 51, a space for arranging the hook 43 can be secured.

This completes the description of the specific embodiments, but the present invention can be widely modified without being limited to the above embodiments. For example, the locking device 34 may be provided on the right side member 21 of the right seat 3, and the engaging protrusion 33 may be provided on the right side wall of the vehicle body. Alternatively, the locking device 34 may be provided on the left side member 21 of the left seat 2, and the engaging projection 33 may be provided on the right side wall of the vehicle body. Also, the side member 21 may be formed of a sheet metal member instead of the pipe material.

1 : Rear seat 2 : Left seat 3 : Right seat 6 : Seat back 15 : Seat back frame 16 : Pad 17 : Skin material 21 : Side member 27 : Side member lower part 28 : Side member intermediate part 29 : Side member upper part 33 : Engagement convex portion 34 : Locking device 37 : Housing space 41 : Bracket 42 : Insertion hole 43 : Hook 44 : Spring 45 : Side plate portion 46 : Rear plate portion 47 : Front plate portion 49 : Drawer port 51 : Pad support portion 52 : End 53 : Upper inclined portion 54 : Lower inclined portion 58 : Recess 62 : Locking groove 71 : Strap

Claims

A vehicle seat,
a seat back frame that forms the skeleton of the seat back;
a pad supported by the seat back frame;
a lock device provided on the seat back frame and detachably engaged with an engagement protrusion provided on the vehicle body or the adjacent seat;
The seatback frame has left and right side members extending vertically and forming left and right side portions of the seatback,
The locking device is
a groove-shaped bracket coupled to the side member and forming an accommodation space with the side member;
an insertion hole formed in the bracket through which the engaging projection passes;
a hook that is rotatably supported on the surface of the bracket on the accommodation space side and engages with the engaging protrusion in the accommodation space;
The bracket has a pad support portion that bulges forward,
The vehicle seat, wherein the pad has a recess for receiving the pad support.
The side member includes a vertically extending side member lower portion, a side member intermediate portion extending inward of the seatback in the left-right direction from the upper end of the side member lower portion, and an upper end of the side member intermediate portion extending upwardly. and a side member upper portion,
the bracket extends vertically and is coupled to each of the side member lower portion, the side member intermediate portion, and the side member upper portion;
2. The vehicle seat according to claim 1, wherein the accommodation space is formed laterally of the upper portion of the side member and above the intermediate portion of the side member.
The vehicle seat according to claim 2, wherein the side member intermediate portion extends from the upper end of the side member lower portion toward the inside of the seat back in the left-right direction and inclined upward.
The vehicle seat according to claim 2, wherein the side member lower portion, the side member intermediate portion, and the side member upper portion are formed of a continuous pipe material.
A drawer opening is formed between the upper edge of the bracket and the upper part of the side member,
A strap is coupled to the hook,
3. The vehicle seat according to claim 2, wherein the strap extends outside from the upper end of the seat back through the outlet.
The vehicle seat according to claim 2, wherein the hook is arranged on the back side of the pad support portion.
The vehicle seat according to claim 6, wherein the pad supporting portion protrudes forward from the upper portion of the side member.
The bracket includes a side plate portion whose surface faces left and right, a rear plate portion extending inward of the seatback in the left-right direction from the rear edge of the side plate portion, and a rear plate portion extending inward of the seatback in the left-right direction from the front edge of the side plate portion. an inwardly extending front plate,
The vehicle seat according to claim 7, wherein the pad supporting portion protrudes forward from the front plate portion.
each of the front plate portion and the rear plate portion is welded to each of the side member upper portion, the side member intermediate portion, and the side member lower portion;
The vehicle seat according to claim 8, wherein the lower end of the side plate portion is welded to the lower portion of the side member.
The pad supporting portion includes a planar end portion facing the front-rear direction, a plate-like upper inclined portion extending upward and backward from an upper end of the end portion and connected to the front plate portion, and the front plate. 9. The vehicle seat according to claim 8, further comprising a plate-like downwardly inclined portion extending downwardly and rearwardly from a lower end of the portion and connected to the front plate portion.