JP2019010905A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat more resistant to be tumbled down than a conventional one.SOLUTION: A vehicle seat includes a seat cushion, a seat back connected to the seat cushion, and a seat slide adjustment device having a pair of slide rails and enabling adjustment of the position of the seat cushion. The seat cushion includes: a pair of side frames; a connection pipe bridged between the portions close to the front portion in the side frames; and a pair of brackets fixed to respective slide rails at the inside between the portions close to the front portion of respective side frames and supporting the connection pipe. The pair of brackets are fixed to respective slide rails by using a plurality of fixing members.SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to a vehicle seat, and is applicable to, for example, a vehicle seat in which a connection pipe is provided between left and right side members of a seat cushion frame.

  In general, it has been a problem to increase the rigidity of the seat cushion frame in order to prevent the seat from falling when an impact is applied to the vehicle and a large load is applied to the seat. As a solution to such a problem, for example, there is a seat cushion frame described in JP2011-239910A.

JP2011-239910A

However, there is a growing demand for vehicle safety, and it is desired to develop a vehicle seat that makes the seat more difficult to collapse when a large load is applied to the seat.
This indication makes it a subject to provide the vehicle seat which is hard to fall down conventionally.

An outline of typical ones of the present disclosure will be briefly described as follows.
That is, the vehicle seat includes a seat cushion, a seat back coupled to the seat cushion, and a seat slide adjusting device that includes a pair of slide rails and that can adjust the position of the seat cushion. The seat cushion is fixed to the slide rails inside a pair of side frames, a connecting pipe spanned between front portions of the side frames, and a front portion of the side frames. And a pair of brackets for supporting the connection pipe. Each of the pair of brackets is fixed to each slide rail with a plurality of fixing members.

  According to the vehicle seat, it is possible to make the vehicle seat more difficult to fall than before.

It is a figure for demonstrating the example of a structure of the vehicle seat. It is a perspective view from the right front side of the seat frame of the vehicle seat of FIG. It is a side view from the right side of the seat frame of the vehicle seat of FIG. FIG. 3 is a top view from the upper side of the seat frame of the vehicle seat of FIG. 2. It is a perspective view from the left front side of a riser, a seat slide adjustment device, and a seat cushion frame. It is a front view of a riser, a seat slide adjustment device, and a seat cushion frame. FIG. 7 is a side perspective view of the riser, the seat slide adjusting device, and the seat cushion frame of FIG. 6. It is a perspective view from the left front near a reinforcement bracket. It is a cross-sectional schematic diagram in the AA line of FIG. It is a perspective view from the left front side of the vehicle seat which concerns on a comparative example. It is a cross-sectional schematic diagram in the AA line of FIG.

  Examples will be described below with reference to the drawings. However, in the following description, the same components may be denoted by the same reference numerals and repeated description may be omitted. In order to clarify the description, the drawings may be schematically represented with respect to the width, thickness, shape, etc. of each part as compared to the actual embodiment, but are merely examples, and the interpretation of the present invention is not limited to them. It is not limited.

  FIG. 1 is a perspective view of a vehicle seat from the right front side. In order to facilitate understanding of the structure of the vehicle seat 1, the directions of “front”, “rear”, “left”, “right”, “upper” and “lower” are shown in the figure, and these directions are shown. Is also used to express a relative positional relationship in the following description. These directions correspond to the direction of the vehicle when the vehicle seat 1 is mounted on the vehicle. For example, the front direction of the vehicle seat 1 and the front direction of the vehicle indicate the same direction. Below, although the structure of the vehicle seat 1 suitable for a front right seat (for example, driver's seat) is described, the vehicle seat 1 is applicable also to another seat. In addition, the vehicle seat mounted on the left side of the vehicle has a configuration in which the left and right sides of the vehicle seat 1 are interchanged.

  The vehicle seat 1 includes a seat cushion 10, a seat back 20, a headrest 30, a side cover 40, an operation lever 41, a riser 50, and a seat slide adjusting device 60. The seat cushion 10 forms a seating surface. The seat back 20 forms a backrest. The headrest 30 is disposed above the seat back 20 and forms a pillow portion that supports the head of the occupant. The seat slide adjusting device 60 is fixed to the vehicle via the riser 50, and enables the seat cushion 10 to slide in the front-rear direction (position adjustment). Further, the vehicle seat 1 has a reclining device (recliner) that enables angle adjustment between the seat cushion 10 and the seat back 20.

  The operation lever 41 is an operation unit for a reclining operation, and accepts a reclining operation of the vehicle seat 1.

  A retractor (not shown) of a seat belt device is fixedly installed on the upper right side of the vehicle seat 1 mounted on the vehicle. The webbing pulled out from the retractor is connected to an anchor portion (not shown) on the lower right side of the vehicle seat 1. A tongue plate (not shown) is inserted in the middle of the webbing pulled out from the retractor. The tongue plate is detachable from the buckle 71 connected to the left side frame portion via an anchor portion (not shown).

(Seat frame)
2 is a perspective view from the right front side of the seat frame of the vehicle seat of FIG. 3 is a side view from the right side of the seat frame of the vehicle seat of FIG. FIG. 4 is a top view from the upper side of the seat frame of the vehicle seat of FIG.

  The seat frame 100 is assembled by a seat cushion frame 110, a seat back frame 120 hinged to the seat cushion frame 110 by a reclining device 114 so as to be tilted forward and angle-adjustable, a left and right seat slide adjusting device 60, and a left and right riser 50. The seat cushion 10 is assembled with a seat cushion frame 110, a seat cushion pad (not shown) and a skin (not shown), and the seat back 20 is a seat back frame 120, a seat back pad (not shown) and a skin (not shown). Assembled in.

  The riser 50 is used, for example, to secure the height of the seat surface position of a front seat such as a driver seat or a passenger seat, and includes a right support portion 50R, a left support portion 50L, It is mainly comprised from the one connection part 51 which connects 50R of left support parts, and the left support part 50L.

  The riser 50 is installed between the floor of the vehicle and the seat slide adjusting device 60, and supports the seat cushion 10 with respect to the floor. That is, the riser 50 is fixed to the floor with bolts and is connected to the seat cushion 10 via the seat slide adjusting device 60. The right support part 50R and the left support part 50L play a role of supporting the seat cushion 10.

  In addition, since the height of the floor is lower in the front than in the rear, the length of the front leg 52R in the vertical direction is longer than that of the rear leg 53R. In addition, since the floor is formed lower on the right side than on the left side, the length of the front leg portion 52R in the vertical direction is longer than that of the front leg portion 52L.

  The seat slide adjusting device 60 includes a left slide rail 62L, a left guide rail 61L, a right guide rail 61R, a left guide rail 61L, a left guide rail 61L, and a left slide rail 62L that is supported by being slidably fitted to the right guide rail 61R. The slide rail 62R, the lock mechanism 63, the operation mechanism 64, and the like are normally assembled.

  The left guide rail 61L and the right guide rail 61R of the seat slide adjusting device 60 are fixedly mounted on the left support portion 50L and the right support portion 50R, respectively, and the seat cushion frame 110 is placed thereon. A cushion frame 110 is fixedly attached to support the seat cushion 10.

  The seat cushion frame 110 is formed of a substantially rectangular frame serving as a skeleton of the seat cushion 10, and as illustrated in FIG. 2, the left side frame 111L and the right side frame 111R respectively disposed on the left and right sides, A connecting pipe that connects the plate-like frame 112 installed on the front upper surface of the left side frame 111L and the right side frame 111R, and the rear inner surface of each of the left side frame 111L and the right side frame 111R. 113, a connecting pipe 116 for connecting the inner side surface on the front side, and a reinforcing bracket described later.

  The left side frame 111L and the right side frame 111R are each made of a sheet metal member extending in the front-rear direction, and the left side frame 111L and the right side frame 111R are separated in the left-right direction in a state of being substantially parallel to each other. doing.

  As shown in FIG. 2, a reclining device 114 that rotatably connects the seat back 20 to the seat cushion 10 is provided at a portion where the right side frame 111 </ b> R and the seat back frame 120 are connected. The reclining device 114 includes, for example, a spiral spring (not shown) that urges the seat back frame 120 in an upright state, and a spring locking member (not shown) that locks the extended end of the spiral spring. Yes. The right side frame 111R and the reclining device 114 are covered with the side cover 40.

  The seat back frame 120 includes a back frame main body 121, a left side frame 122L, and a right side frame 122R.

  The back frame main body 121 is a frame member that forms a skeleton of the seat back frame 120, and is formed by bending a round pipe formed in a cylindrical shape.

  The outer surface of the right side frame 122R is pivotally attached to the inner surface of the right side frame 111R. At this time, a reclining device 114 is assembled between these both surfaces. Thereby, since the seat back frame 120 can be locked with respect to the seat cushion frame 110 at a desired tilt position, the vehicle seat 1 having a reclining function can be obtained.

  A pair of pillar guides 128 for inserting pillars (not shown) of the headrest 30 are attached to the frame 121b in the upper part of the back frame body 121.

  The side cover 40 is attached to the right side frame 111R so as to cover (hide) the side portions of the seat cushion 10, the right side frame 111R, the right slide rail 62R, and the guide rail 61R. This attachment is detachable by, for example, press-fitting protrusions (not shown) provided at a plurality of locations on the inner surface side of the side cover 40 into locking holes (not shown) formed in the right side frame 111R. Can be done.

  The side cover 40 is a molded article made of synthetic resin, and has an attachment hole and a recess (not shown), and an operation knob lever of the reclining device 114 on the surface side through a through hole provided so as to penetrate the through hole and the recess. Etc. are provided so that they can be manually operated.

(Reinforcement bracket)
The reinforcing bracket will be described with reference to FIGS. FIG. 5 is a perspective view from the left front side of the riser, the seat slide adjusting device, and the seat cushion frame. FIG. 6 is a front view of the riser, the seat slide adjusting device, and the seat cushion frame. 7 is a side perspective view of the riser, seat slide adjusting device, and seat cushion frame of FIG. FIG. 8 is a perspective view from the left front near the reinforcing bracket. FIG. 9 is a schematic sectional view taken along line AA in FIG. FIG. 10 is a perspective view from the left front side of the vehicle seat according to the comparative example. 11 is a schematic cross-sectional view taken along line AA in FIG.

  A connecting pipe (reinforcing pipe) 116 is stretched between the portions of the pair of side frames 111R and 111L near the front. Specifically, each end of the connection pipe 116 passes through each side frame 111R, 111L, and the end edge is welded and connected to the outer surface of each side frame 111R, 111L.

  Further, the connecting pipe 116 is set on the slide rails 62R and 62L via reinforcing brackets 117R and 117L that transmit force to the slide rails 62R and 62L of the seat slide adjusting device 60. The side frames 111R and 111L are both supported by slide rails 62R and 62L, and the connecting pipe 116 is supported by reinforcing brackets 117R and 117L. Specifically, the reinforcing brackets 117R and 117L are provided inside the side frames 111R and 111L, the lower ends thereof are positioned forward and rearward from the connection pipe 116, and the lower ends of the slide brackets via the side frames 111R and 111L. 62R and 62L are fixed by two fixing members, bolts 118, and the upper ends are inclined so as to be spaced away from the side frames 111R and 111L inwardly, and the upper ends are forward, downward and rearward of the connecting pipe 116. It is fixed to the side by welding.

  The connection pipe 116 suppresses deformation in the direction in which the side frames 111R and 111L open outwardly due to the input load F2 from the occupant when subjected to an impact, but in addition to this, the connection pipe 116 has reinforcing brackets 117R and 117L. The load F1 input to the central portion of the connecting pipe 116 is transmitted to the slide rails 62R and 62L via the side frames 111R and 111L and the reinforcing brackets 117R and 117L, so that the load is dispersed and the slide rails 62R and 62L are distributed. Improves the transmission efficiency to the cushion frame and suppresses the sideways deformation of the cushion frame.

  This will be described with reference to FIGS. In the comparative example, as shown in FIG. 10, when the reinforcing bracket is not used, the side frame 111R is fastened to the slide rail 62R with two bolts 118 to ensure rigidity with the seat cushion frame. In this case, as shown in FIG. 11, the generated moment around the fastening of the slide rail 62R (around the bolt 118) is large.

  On the other hand, in this embodiment, as shown in FIG. 8, the reinforcing bracket 117R is fastened to the slide rail 62R via the side frame 111R at two points with bolts 118. Thereby, as shown in FIG. 9, the generated moment around the fastening of the slide rail 62R (bolt 118) is smaller than that of the comparative example.

  By providing the reinforcing bracket, the rigidity can be further improved and the shape of the seat cushion frame can be simplified (workability and thinning). In addition, the safety of the occupant during an actual vehicle collision can be further ensured by improving the rigidity of the seat cushion frame skeleton.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and needless to say, various modifications can be made.

1: Vehicle seat 10: Seat cushion 111R, 111L: Side frame 116: Connection pipe 117R, 117L: Reinforcement bracket 118: Bolt (fixing member)
20: Seat back 60: Seat slide adjusting device 61R, 61L: Guide rail 62R, 62L: Slide rail

Claims (3)

The vehicle seat
Seat cushion,
A seat back connected to the seat cushion;
A seat slide adjusting device having a pair of slide rails and capable of adjusting the position of the seat cushion;
With
The seat cushion is
A pair of side frames;
A connecting pipe that spans between the front portions of the side frames;
A pair of brackets that are fixed to the slide rails between the portions near the front part of the side frames and support the connection pipe;
With
Each of the pair of brackets is fixed to each slide rail with a plurality of fixing members. The vehicle seat according to claim 1,
One of the plurality of fixing members is positioned in front of the connection pipe, and the other one of the plurality of fixing members is positioned in the rear of the connection pipe. The vehicle seat according to claim 2,
Each bracket has a lower end fixed to each slide rail with the plurality of fixing members via the side frames, and an upper end having a predetermined gap with each side frame of the adjacent seat cushion. To be fixed to the connecting pipe.

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