JP2018001815A - Vehicular seat - Google Patents

Abstract

In a seat frame in which a side frame and a front frame are made of different materials, a vehicle seat that can suppress movement of a side portion of a seated occupant in a lateral direction with a simple structure is provided. A cushion frame (2F) includes side frames (11, 12) and a front panel (15) for connecting the front end portions of the side frames (11, 12). The side frames 11, 12 and the front panel 15 are formed of different materials and are connected by bolts 15a. A wire member 41 having a support portion 41a extending in the front-rear direction along the side frames 11, 12 is connected to the front panel 15 at a position spaced upward from the side frames 11, 12, and a front fixing portion 41b and a rear fixing portion 41c are connected to each other. The support bracket 42 is connected to the front panel 15 by bolts 42a1 and 42b1. [Selection] Figure 3

Description

  The present invention relates to a vehicle seat.

  There is a vehicle seat in which a wire member that supports a side of a hip or thigh of a seated occupant is attached to a cushion frame. In the automobile seat described in Patent Document 1, a wire is connected to a side frame that extends in the front-rear direction on the left and right sides of the cushion frame, and a front panel that connects the front end side of the side frame. The end of the member is fixed by welding.

JP 2014-61128 A

  In the automobile seat disclosed in Patent Document 1, all of the side frame, the front panel, and the wire member are made of iron. After the front panel is fixed to the side frame by welding, the end portions of the wire members are fixed to the side frame and the front panel by welding, respectively. As a result, the wire member is firmly connected to the cushion frame, and the wire member can firmly receive the lateral force applied from the seated occupant.

  By the way, from the viewpoint of weight reduction, the side frame and the front panel may be formed of different materials. For example, the side frame is made of iron and the front panel is made of aluminum. In this case, the side frame and the front panel cannot be connected by welding. Therefore, one method corresponding to this is to connect the wire members to the side frames and / or the front panel after connecting the side frames and the front panel with bolts or the like. Another method is a method in which a wire member of the same material is connected to the side frame or the front panel by welding, and then the side frame and the front panel are connected by a bolt or the like. The latter method has a problem in that it is difficult to fasten the bolts or the like because the wire member previously connected to the side frame or the front panel is located immediately above a portion where the side frame and the front panel are connected by bolts or the like. is there. Therefore, it has been desired to realize the former method with a simple structure.

  In view of such a demand, an object of the present invention is to provide a vehicle for a vehicle in which a side frame and a front frame are made of different materials, and the movement of a side portion of a seated occupant in a lateral direction can be suppressed with a simple structure. To provide a sheet.

  1st invention of this invention is a vehicle seat, Comprising: A seat frame connects the side frame extended in the front-back direction or the up-down direction in the both sides of the seat width direction, and the front end side or the upper end side of the side frame. The side frame and the connection frame are formed of different materials and are connected by mechanical fastening means, and the connection frame is located above or in front of the side frame. A wire member having a support portion extending in the front-rear direction or the up-down direction along the side frame at a position spaced apart from each other is connected to the bracket by a mechanical fastening means. And is attached to the connecting frame.

  According to the first invention, even if the side frame and the connecting frame are made of different materials, they can be connected without any problem because they are connected by the mechanical fastening means. In addition, both ends of a wire member having support portions extending in the front-rear direction or the vertical direction along the side frame are connected to the connection frame via brackets at positions spaced upward or forward from the side frame. The connection of the wire member via the bracket is performed by connecting a bracket in which both ends of the wire member are connected to the connection frame by mechanical fastening means. As a result, the wire member can be attached to the connection frame without obstructing the connection by the fastening means between the side frame and the connection frame, and the side part of the new body of the seated occupant can be moved in the left-right direction. Can be suppressed.

  According to a second aspect of the present invention, in the first aspect of the invention, the wire member is connected to the bracket at a position where both end portions thereof are shifted in the left-right direction.

  According to the second aspect of the present invention, the wire member is connected to the bracket at the positions where both end portions thereof are shifted in the left-right direction, so that when the support portion receives a left-right force from the seated occupant, the wire member falls in the left-right direction. It is difficult to support the body side of the seated occupant.

  According to a third aspect of the present invention, in the second aspect, one end of the wire member extends in the front-rear direction and is connected to the bracket, and the other end of the wire member extends in the left-right direction to the bracket. They are connected to each other.

  According to the third invention, since the other end portion of the wire member extends in the left-right direction and is connected to the bracket, the wire member is more unlikely to fall down in the left-right direction, and the body side portion of the seated occupant can be firmly supported. it can.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the seat frame is a cushion frame, and the connection frame is a front frame that connects the side frames on the front end side. It is characterized by that.

  According to the fourth aspect of the invention, the seat cushion can restrain the thigh side of the seated occupant from moving in the left-right direction.

  According to a fifth aspect of the present invention, in the fourth aspect, the front frame is a panel-like member, and the bracket is formed so as to contact the front frame in a planar shape. .

  According to the fifth aspect of the present invention, the bracket is attached in a state where the bracket is in contact with the front frame, so that the wire member is not easily tilted in the left-right direction, and the thigh side of the seated occupant can be firmly supported. .

It is the perspective view which looked at the automobile seat of one embodiment of the present invention from diagonally forward. It is the disassembled perspective view which looked at the seat cushion of the vehicle seat of the said embodiment from diagonally forward. It is the perspective view which looked at the cushion frame of the vehicle seat of the said embodiment from diagonally forward. It is the top view which looked at the cushion frame of the automobile seat of the above-mentioned embodiment from the upper part. It is an enlarged view of the V part of FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5.

  1-6 is a figure which shows one Embodiment of this invention. This embodiment is an example in which the present invention is applied to an automobile seat 1. In each figure, each direction of the automobile and the automobile seat 1 when the automobile seat 1 is attached to the automobile floor F is indicated by an arrow. In the following description, the description regarding the direction is made based on this direction.

  As shown in FIGS. 1 and 2, the vehicle seat 1 according to the present embodiment includes a seat cushion 2 that serves as a seating portion for an occupant and a seat back 3 that serves as a backrest portion for the occupant. The seat cushion 2 includes a cushion frame 2F forming a skeleton, a cushion pad 2P as a cushion material placed on the cushion frame 2F, and a cushion cover 2C as a skin material that is put on the surface of the cushion pad 2P; Have The outline of the cushion cover 2C placed on the cushion pad 2P constitutes the outline of the seat cushion 2, and the outline of the seat cushion 2 is shown by a solid line in FIG. The lower side of the seat back 3 is attached to the rear side of the seat cushion 2 via a recliner (not shown) so that the inclination angle of the seat back 3 with respect to the seat cushion 2 can be adjusted. Since the seat back 3 has a known configuration, the description thereof will be omitted, and the seat cushion 2 will be described. Here, the automobile seat 1 corresponds to the “vehicle seat” in the claims.

  As shown in FIG. 3, the cushion frame 2F of the seat cushion 2 includes a frame body portion 10 formed in a substantially rectangular shape in a top view, a slide rail 20 connected to the floor F and extending in the front-rear direction, and a slide rail 20 On the other hand, it has a lifter portion 30 for attaching the frame portion 10 so as to be movable up and down. Here, the cushion frame 2F corresponds to a “seat frame” in the claims.

  As shown in FIG. 3, the basic framework of the frame body portion 10 includes a right side frame 11 and a left side frame 12 that extend in the front-rear direction on the left and right sides of the seat, a cylindrical front pipe 13 on the front side, and a rear side. It is formed by connecting with a cylindrical rear pipe 14. The right side frame 11 and the left side frame 12 are long iron press parts extending in the front-rear direction, and flanges extending in the seat outer direction are provided at the upper end portion and the lower end portion, respectively. The front pipe 13 and the rear pipe 14 are iron parts that are rotatably attached to the right side frame 11 and the left side frame 12. A front panel 15, which is an aluminum pressed part, is attached to the front end portions of the right side frame 11 and the left side frame 12 so as to be movable up and down. Specifically, the front panel 15 is attached to the front end side of the pair of left and right iron support arms 16 by fastening two bolts 15a, and the rear end portion of the support arm 16 is connected to the right side frame 11 and the left by the shaft 16a. The side frame 12 is pivotally attached to a substantially central portion in the front-rear direction. The front panel 15 moves up and down with respect to the right side frame 11 and the left side frame 12 as the support arm 16 rotates in the vertical direction about the shaft 16a. The support arm 16 is in a positional relationship where it overlaps the right side frame 11 and the left side frame 12 when lowered to the lowermost end. Here, the right side frame 11 and the left side frame 12 correspond to a “side frame” in the claims. Further, the front panel 15 corresponds to “connecting frame, front frame” in the claims.

  As shown in FIGS. 3 to 6, support members 40 are attached to the left and right ends of the front panel 15. Since the left and right support members 40 are in a plane-symmetric relationship with respect to a plane perpendicular to the floor F and passing through the center in the left-right direction of the cushion frame 2F, the right support member 40 will be described as a representative. The support member 40 includes a wire member 41 obtained by bending an iron wire, and a support bracket 42 which is an iron press part for attaching the wire member 41 to the front panel 15. The wire member 41 includes a support portion 41 a that extends in the front-rear direction along the support arm 16 above the support arm 16 when the support member 40 is attached to the front panel 15. Furthermore, the wire member 41 extends downward from the front end portion of the support portion 41a and extends downward from the rear end portion of the support portion 41a, and a front fixing portion 41b extending from the middle to the left (inner side of the seat). And a rear fixing portion 41c extending from the middle toward the front. The support bracket 42 has a substantially isosceles triangle shape when viewed from above, and is arranged such that the apex is on the right side and the base extends in the front-rear direction in parallel with the support arm 16. The support bracket 42 is formed so as to abut on the surface along the shape of the front panel 15, and includes a flat surface portion 42 a including a triangular apex portion and a slope portion 42 b including a triangular base portion. One hole for passing the bolt 42a1 is provided near the apex of the triangle of the flat surface portion 42a, and two holes for passing the bolt 42b1 are provided in the vicinity of the central portion in the left-right direction of the slope portion 42b. The support bracket 42 is fastened and fixed to the front panel 15 by bolts 42a1 and 42b1. Here, the support bracket 42 corresponds to a “bracket” in the claims. The front fixing portion 41b and the rear fixing portion 41c correspond to the “other end portion” and the “one end portion” in the claims, respectively.

  As shown in FIG. 3, an S spring 19 that supports the cushion pad 2 </ b> P from below is attached between the front pipe 13 and the rear pipe 14 in a spanning manner. The S spring 19 is a member in which a spring formed by bending a wire is partially integrated with resin. The S spring 19 is held so as to be rotatable relative to the front pipe 13 and the rear pipe 14 through a resin member. Thus, even when the front pipe 13 and the rear pipe 14 are rotated when the height of the frame 10 with respect to the slide rail 20 is adjusted, the locked state is maintained and the cushion pad 2P can be stably supported. Lower arms (not shown) are respectively attached to the rear end upper portions of the right side frame 11 and the left side frame 12, and lower ends of back frames (not shown) are attached to the lower arms via recliners (not shown). It has been.

  As shown in FIG. 3, the slide rail 20 is a component in which an upper rail 22 is slidably assembled with a lower rail 21 connected to a floor F. A bracket 31 extending from the front end portion side to the rear end portion side is connected to the upper surface portion of the right upper rail 22. The bracket 31 is a press-molded member having a bottom wall portion 31a extending in the front-rear direction and a side wall portion 31b erected upward from the right end portion of the bottom wall portion 31a. A front bracket 32 is connected to the upper surface of the left upper rail 22 on the front end side, and a rear bracket 33 is connected to the rear end side. The front bracket 32 is a press-formed member having a bottom wall portion 32a extending in the front-rear direction and a side wall portion 32b erected upward from the right end portion of the bottom wall portion 32a. The rear bracket 33 is a press-molded member having a bottom wall portion 33a extending in the front-rear direction and a side wall portion 33b erected upward from the right end portion of the bottom wall portion 33a.

  As shown in FIG. 3, the lifter unit 30 includes a front pipe 13 and a rear pipe 14, a pair of front links 34, a pair of rear links 35, a bracket 31, a front bracket 32, and a rear bracket 33. That is, the bracket 31, the front bracket 32, and the rear bracket 33 are members that connect the slide rail 20 and the frame body portion 10, and at the same time, are one of the constituent members of the lifter portion 30. The right front link 34 has an upper end fixed to the right end of the front pipe 13 and a lower end rotatably attached to the front end of the side wall 31 b of the bracket 31. The left front link 34 has an upper end fixed to the left end of the front pipe 13 and a lower end rotatably attached to the front end of the side wall 32 b of the front bracket 32. The right rear link 35 has an upper end fixed to the right end of the rear pipe 14 and a lower end rotatably attached to the rear end of the side wall 31 b of the bracket 31. The left rear link 35 has an upper end fixed to the left end of the rear pipe 14 and a lower end rotatably attached to the front end of the side wall 33 b of the rear bracket 33. A sector gear (not shown) is fixed near the left end of the rear pipe 14. The sector gear is arranged so as to mesh with a pinion gear (not shown) attached via a speed reduction mechanism 18 with respect to the motor 17 attached to the left side frame 12. When the pinion gear is rotated by the drive of the motor 17, the sector gear rotates and at the same time the rear pipe 14 rotates. When the rear pipe 14 rotates, the rear link 35 rotates in the vertical direction about the shaft 31b1 of the bracket 31 and the shaft 33b1 of the rear bracket 33. At this time, the right side frame 11, the front link 34, the bracket 31, and the rear link 35 constitute a four-joint link. In addition, a four-bar link including the left side frame 12, the front link 34, the front bracket 32, the rear bracket 33, and the rear link 35 is configured. As a result, the left and right front links 34 are rotated in the vertical direction following the movement of the left and right rear links 35. Thereby, the frame body part 10 moves up and down with respect to the floor F.

  A procedure for assembling the cushion frame 2F will be described. First, the right side frame 11 and the left side frame 12 are connected to each other so as to be relatively rotatable with a cylindrical front pipe 13 on the front side and a cylindrical rear pipe 14 on the rear side to obtain the frame body portion 10. At this time, the front end side of the bracket 31 is connected to the lower end portion of the right front link 34 with a rivet so as to be relatively rotatable, and the rear end portion side of the bracket 31 is relatively rotated to the lower end portion of the right rear link 35. Connect with rivets where possible. The front bracket 32 is connected to the lower end of the left front link 34 with a rivet so as to be relatively rotatable, and the rear bracket 33 is connected to the lower end of the left rear link 35 with a rivet so as to be relatively rotatable. Then, the upper end portion of the right front link 34 is connected to the right end portion of the front pipe 13 by welding, and the upper end portion of the right rear link 35 is connected to the right end portion of the rear pipe 14 by welding, and then the front pipe 13 The right end side and the right end side of the rear pipe 14 are attached to the right side frame 11. Further, after attaching the left end side of the front pipe 13 and the left end side of the rear pipe 14 to the left side frame 12, the upper end side of the left front link 34 is connected to the left end side of the front pipe 13 by welding, and the left rear The upper end portion side of the link 35 is connected to the left end portion side of the rear pipe 14 by welding. Before attaching the left end portion side of the rear pipe 14 to the left side frame 12, a sector gear is attached to the inside of the seat on the left end portion side of the rear pipe 14. Thereafter, a pinion gear that rotates the sector gear with respect to the left side frame 12, a motor 17, and a speed reduction mechanism 18 are attached to the left side frame 12. Next, the support arm 16 is connected to the right side frame 11 and the left side frame 12 with rivets so as to be relatively rotatable, and then the front panel 15 is fastened and fixed to the support arm 16 with bolts 15a. Next, the left and right support members 40 are fastened and fixed to the front panel 15 by bolts 42a1 and 42b1. Finally, the bracket 31 is fastened and fixed to the upper surface of the upper rail 22 of the right slide rail 20 with bolts, and the front bracket 32 and the rear bracket 33 are fastened and fixed to the upper surface of the upper rail 22 of the left slide rail 20.

  The present embodiment configured as described above has the following operational effects. Even if the right side frame 11 and the left side frame 12 and the front panel 15 are made of different materials such as iron and aluminum, they can be connected without any problem because they are connected by the bolts 15a which are mechanical fastening means. Further, the front panel 15 includes a front fixing portion 41b and a rear fixing portion 41c of a wire member 41 having support portions 41a extending in the front-rear direction along the support arm 16 at positions spaced above the connection portion with the support arm 16. Are connected via a support bracket 42. Specifically, the front fixing portion 41b and the rear fixing portion 41c of the wire member 41 are welded and fixed to the support bracket 42, and the support bracket 42 is a mechanical fastening means with respect to the front panel 15 and a bolt 42a1. It is connected by a bolt 42b1. Thereby, the wire member 41 can be smoothly attached to the front panel 15 without the support portion 41a of the wire member 41 becoming an obstacle to the fastening and fixing of the support arm 16 and the front panel 15 by the bolt 15a.

  Further, the wire member 41 is connected to the support bracket 42 at a position where the front end portion of the front fixing portion 41b is shifted to the left side (the seat inner direction) from the front end portion of the rear fixing portion 41c. Thereby, when the support part 41a receives the force of the left-right direction from the seating occupant, the wire member 41 is hard to fall down in the left-right direction and can firmly support the body side part of the seated occupant. Further, since the front fixing portion 41b of the wire member 41 extends in the left-right direction and is connected to the support bracket 42, the wire member 41 is more unlikely to fall down in the left-right direction, and can firmly support the body side portion of the seated occupant. it can. Further, since the support members 40 are attached to the left and right end portions of the front panel 15 of the cushion frame 2F, the movement of the seated occupant in the thigh side can be suppressed. In addition, since the support bracket 42 of the support member 40 is formed so as to abut on the front panel 15 in a planar shape, the wire member 41 hardly falls down in the left-right direction and firmly supports the thigh side of the seated occupant. can do.

  As mentioned above, although specific embodiment was described, this invention is not limited to those external appearances and structures, A various change, addition, and deletion are possible in the range which does not change the summary of this invention. For example, the following can be mentioned.

  1. In the above embodiment, the front panel 15 is attached to the right side frame 11 and the left side frame 12 via the support arm 16, but is not limited thereto, and is directly attached to the right side frame 11 and the left side frame 12. It may be.

  2. In the above embodiment, the wire member 41 and the support bracket 42 of the support member 40 are made of iron, but the present invention is not limited to this, and may be made of a light alloy such as aluminum. Further, the wire member 41 and the support bracket 42 of the support member 40 may be attached as different materials by mechanical means.

  3. In the above embodiment, the present invention is applied to the seat cushion 2, but the present invention is not limited to this, and the support member 40 may support the shoulder side of the seated occupant by applying to the seat back.

  4). In the above embodiment, the present invention is applied to an automobile seat, but may be applied to a seat mounted on an airplane, a ship, a train, or the like.

1 Car seat (vehicle seat)
2 Seat cushion 2F Cushion frame (seat frame)
11 Right side frame (side frame)
12 Left side frame (side frame)
15 Front panel (connection frame, front frame)
40 support member 41 wire member 41a support part 41b front fixed part (other end part)
41c Rear fixing part (one end)
42 Support bracket (bracket)
F floor

Claims (5)

A vehicle seat,
The seat frame includes a side frame extending in the front-rear direction or the up-down direction on both sides in the seat width direction, and a connection frame that connects the front end sides or the upper end sides of the side frames,
The side frame and the connection frame are formed of different materials and connected by mechanical fastening means,
The connecting frame has a support member extending in the front-rear direction or the up-down direction along the side frame at a position spaced upward or forward from the side frame, and a wire member whose both ends are connected to the bracket, A vehicle seat attached to the connecting frame by being connected to the connecting frame by mechanical fastening means.   2. The vehicle seat according to claim 1, wherein the wire member is connected to the bracket at a position where both ends thereof are shifted in the left-right direction.   3. The vehicle seat according to claim 2, wherein one end portion of the wire member extends in the front-rear direction and is connected to the bracket, and the other end portion of the wire member extends in the left-right direction and is connected to the bracket. .   4. The vehicle seat according to claim 1, wherein the seat frame is a cushion frame, and the connection frame is a front frame that connects the side frames on a front end side. 5. 5. The vehicle seat according to claim 4, wherein the front frame is a panel-like member, and the bracket is formed so as to abut on the front frame in a planar shape.

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