JP2019073216A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat which enables increase of load capacity against a side collision.SOLUTION: One aspect of the disclosure is a vehicle seat including a seat cushion and a seat back which can swing relative to the seat cushion. The vehicle seat includes: a back frame; two recliners; a connection rod; a reinforcement rod; and a bracket. The back frame forms a framework of the seat back and has two side frames which are spaced apart from each other in a seat width direction. The two recliners are respectively attached to the two side frames and are configured to adjust a swing angle of the back frame in a seat fore and aft direction. The connection rod connects the two recliners in the seat width direction. The reinforcement rod extends in the seat width direction and is disposed between the two side frames. The bracket is attached to the reinforcement rod and has a restriction part through which the connection rod penetrates in the seat width direction.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a vehicle seat.

  A vehicle seat disposed in a vehicle or the like is provided with a recliner that reclines a seat back with respect to a seat cushion in the back and forth direction of the seat. The recliner is attached to the side frame of the back frame which constitutes the framework of the seat back.

  On the other hand, there is known a configuration in which a reinforcing rod is disposed between two side frames in order to increase the strength against a collision from the side of the back frame (that is, a side collision) (see Patent Document 1).

JP, 2009-6895, A

  The above-mentioned reinforcing rod is a member for receiving an impact from the side frame in the longitudinal direction, but depending on the arrangement of the parts constituting the reclining mechanism, the end of the reinforcing rod may not be fixed sufficiently to the side frame There are times when

  If the end of the reinforcing rod is not sufficiently fixed to the side frame, the reinforcing rod is deformed, for example, to be inclined in the longitudinal direction of the seat at the time of side collision. As a result, since the tip end portion of the reinforcing rod does not vertically abut on another member such as the side frame or the like, the load resistance to the side collision of the vehicle seat becomes insufficient.

  One aspect of the present disclosure is to provide a vehicle seat capable of enhancing load resistance to side collisions.

  One aspect of the present disclosure is a vehicle seat (1) including a seat cushion (2) and a seat back (3) that can swing relative to the seat cushion (2). The vehicle seat (1) comprises a back frame (5), two recliners (6, 7), a connecting rod (8), a reinforcing rod (9) and a bracket (10).

  The back frame (5) constitutes a framework of the seat back (3) and has two side frames (5A, 5B) spaced apart in the sheet width direction. The two recliners (6, 7) are attached to one of the two side frames (5A, 5B) respectively, and are configured to adjust the swing angle of the back frame (5) in the seat longitudinal direction. The connecting rod (8) connects the two recliners (6, 7) in the sheet width direction. The reinforcing rod (9) extends in the sheet width direction and is disposed between the two side frames (5A, 5B). The bracket (10) is attached to the reinforcing rod (9) and has a restricting portion (10A) through which the connecting rod (8) passes in the sheet width direction.

  According to such a configuration, the connecting rod (8) penetrates the bracket (10) attached to the reinforcing rod (9) in the sheet width direction, so that the reinforcing rod (9) becomes a sheet by an impact at the time of a side collision. It is possible to suppress displacement in the direction perpendicular to the width direction. That is, when the reinforcing rod (9) tries to be displaced in the direction perpendicular to the sheet width direction, the bracket (10) abuts on the connecting rod (8) and the displacement thereof is restricted. Displacement is also regulated. As a result, the end of the reinforcing rod (9) can easily abut vertically to another member such as a side frame, and the load resistance to the side collision can be enhanced.

  In one aspect of the present disclosure, the reinforcing rod (9) may have at least one end (9A) that is not fixed to the two side frames (5A, 5B). Also, the bracket (10) may be attached to at least one end (9A). According to such a configuration, the displacement can be regulated by the bracket (10) and the connecting rod (8) with respect to the end (9A) which is easy to displace because it is not fixed to the side frame (5A). The load capacity against bumps can be increased more reliably.

  In one aspect of the present disclosure, the restricting portion (10A) may be configured by a through hole provided in the bracket (10). According to such a configuration, the displacement of the reinforcing rod (9) in any direction perpendicular to the sheet width direction can be restricted.

  In addition, the code in each said bracket is an example which shows the correspondence with the specific structure etc. which will be described in the embodiments described later, and the present disclosure is limited to the specific configuration etc. shown by the code in the above bracket. It is not a thing.

FIG. 1 is a schematic perspective view showing a vehicle seat in the embodiment. FIG. 2 is a schematic perspective view showing a back frame, a recliner, a reinforcing rod and the like of the vehicle seat of FIG. FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. FIG. 4 is a schematic perspective view showing the reinforcing rod and the bracket of FIG. 5A is a schematic perspective view showing a reinforcing rod and a bracket in an embodiment different from FIG. 4, and FIG. 5B is a schematic diagram showing a reinforcing rod and a bracket in an embodiment different from FIGS. 4 and 5A. It is a perspective view.

Hereinafter, embodiments to which the present disclosure is applied will be described using the drawings.
[1. First embodiment]
[1-1. Constitution]
The vehicle seat 1 shown in FIG. 1 includes a seat cushion 2 and a seat back 3.

  The seat cushion 2 is a portion for supporting the buttocks and the like of a seated person. The seat back 3 is a portion for supporting the back of a seated person, and is configured to be swingable in the seat longitudinal direction with respect to the seat cushion 2. Further, the seat cushion 2 has a cushion frame 4 that constitutes a framework of the seat cushion 2. The seat back 3 has a back frame 5 that constitutes a framework of the seat back 3.

  Furthermore, as shown in FIGS. 2 and 3, the vehicle seat 1 includes a first recliner 6, a second recliner 7, a connecting rod 8, a reinforcing rod 9, a bracket 10, and a drive device 11. .

  The vehicle seat 1 of the present embodiment is used as a seat of a passenger car. In addition, the direction in the following description and each drawing means the direction in the state which assembled | attached the vehicle seat 1 to the vehicle (namely, vehicle). Further, in the present embodiment, the seat width direction coincides with the lateral direction of the vehicle, and the seat front coincides with the front of the vehicle.

<Back frame>
As shown in FIG. 1, the back frame 5 includes a first side frame 5A, a second side frame 5B, an upper frame 5C, and a lower frame 5D.

The first side frame 5A and the second side frame 5B are panel-like members which extend in the vertical direction and are spaced apart in the sheet width direction.
The upper frame 5C is a panel-like member which extends in the sheet width direction and connects the upper portions of the first side frame 5A and the second side frame 5B. The lower frame 5D is a panel-like member that extends in the sheet width direction and connects the lower portions of the first side frame 5A and the second side frame 5B. The upper frame 5C and the lower frame 5D may each be formed of a wire or a pipe.

<Recliner>
The first recliner 6 and the second recliner 7 are known members (for example, round recliner) for adjusting the swing angle of the back frame 5 with respect to the cushion frame 4 in the seat longitudinal direction.

  As shown in FIG. 2, the first side frame 5A and the second side frame 5B are pivotably connected to the cushion frame 4 (the lower plate 4A in FIG. 2) by the first recliner 6 and the second recliner 7. It is done.

  As shown in FIG. 3, the first recliner 6 and the second recliner 7 each have a lock member 6A for switching between the locked state for restricting the swing of the back frame 5 and the released state in which the locked state is released. Have.

  The lock member 6A is configured to be rotatable around an axis parallel to the longitudinal direction (that is, the sheet width direction) of the connection rod 8 described later. The lock member 6A switches between the locked state in which the swing of the back frame 5 is locked and the unlocked state in which the lock is released by rotation. The lock member 6A is configured of, for example, a rotating cam plate or the like. The lock member 6A is provided with a through hole into which an end of a connection rod 8 described later can be inserted.

  The first recliner 6 is attached to the left first side frame 5A. Specifically, the first recliner 6 has a back frame fixing portion and a cushion frame fixing portion, and the back frame fixing portion is welded to the outer surface of the first side frame 5A. The cushion frame fixing portion of the first recliner 6 is configured to be movable with respect to the back frame fixing portion, and is fixed to the lower plate 4A which is a part of the cushion frame 4.

  The second recliner 7 is attached to the second side frame 5B opposite to the first recliner 6 in the back frame 5, that is, on the right side. The positional relationship between the second recliner 7 and the second side frame 5B is such that the positional relationship between the first recliner 6 and the first side frame 5A is symmetrical.

<Connection rod>
The connection rod 8 is a rod-like or cylindrical rigid member that connects the first recliner 6 and the second recliner 7 in the swing center axis direction (that is, the sheet width direction) of the back frame 5.

  The connecting rod 8 connects the lock members 6A of the first recliner 6 and the second recliner 7 with each other. In the present embodiment, the connection rod 8 is disposed forward of the reinforcing rod 9 in the seat. Further, the connecting rod 8 is disposed at a position overlapping the reinforcing rod 9 as viewed from the front of the seat. Furthermore, the connecting rod 8 penetrates the bracket 10.

  The end of the connecting rod 8 is inserted into the through hole provided in the lock member 6A of each of the first recliner 6 and the second recliner 7. Further, a drive device 11 is attached to a portion near the first side frame 5A of the connecting rod 8. When the drive device 11 pivots the connection rod 8, the lock members 6A of the first recliner 6 and the second recliner 7 simultaneously rotate, and the lock state is switched.

<Reinforcement rod>
The reinforcing rod 9 is a rod-like or cylindrical member extending in the sheet width direction. Although the reinforcing rod 9 is a cylinder in the present embodiment, the cross-sectional shape of the reinforcing rod 9 is not limited to a circle, and may be a polygon such as a square.

  The reinforcing rod 9 is disposed between the first side frame 5A and the second side frame 5B. The reinforcing rod 9 is disposed at a position overlapping the lower frame 5D as viewed from the front of the seat.

  In the present embodiment, as shown in FIG. 3, the reinforcing rod 9 is in close proximity to the first end 9A close to the drive device 11 disposed inside the first side frame 5A and the inner surface of the second side frame 5B. And a second end 9B. The first end 9A and the second end 9B of the reinforcing rod 9 may be in contact with or separated from the drive device 11 or the second side frame 52, respectively.

  Further, as shown in FIG. 4, the bracket 10, the first auxiliary bracket 12A, the second auxiliary bracket 12B, the third auxiliary bracket 12C, and the fourth auxiliary bracket 12D are attached to the reinforcing rod 9, There is.

  The first auxiliary bracket 12A and the second auxiliary bracket 12B are attached to the outer peripheral surface of the central portion of the reinforcing rod 9, and are fixed to the lower frame 5D by fastening. The third auxiliary bracket 12C is attached to the outer peripheral surface of the first end 9A of the reinforcing rod 9, and is fixed to the lower frame 5D by fastening. The fourth auxiliary bracket 12D is attached to the outer peripheral surface of the second end 9B of the reinforcing rod 9, and is fixed to the second side frame 5B by fastening.

  Thus, while the second end 9B of the reinforcing rod 9 is fixed to the second side frame 5B, the first end 9A is neither fixed to the first side frame 5A nor to the drive device 11. Therefore, the first end 9A is easily deformed in the longitudinal direction of the seat at the side collision. Each auxiliary bracket may be fixed to each part of back frame 5 by welding.

<Bracket>
The bracket 10 is a flat member attached to the first end 9A of the reinforcing rod 9. Specifically, the bracket 10 is fixed to the reinforcing rod 9 by welding or the like so that the plate surface is perpendicular to the sheet width direction and extends forward from the reinforcing rod 9 toward the connecting rod 8. In the present embodiment, as shown in FIG. 3, the end face of the reinforcing rod 9 is flush with the plate surface of the bracket 10.

  The bracket 10 has a restricting portion 10A formed by a through hole. In the restricting portion 10A, as shown in FIGS. 2 and 3, the connecting rod 8 penetrates the bracket 10 in the sheet width direction. In the present embodiment, the diameter of the through hole constituting the restricting portion 10A is formed larger than the outer diameter of the connection rod 8. However, as long as the connection rod 8 can be inserted, the diameter of the through hole and the outer diameter of the connection rod 8 may be equal.

<Drive device>
The drive device 11 includes a motor, a gear, and the like, and operates the first recliner 6 and the second recliner 7 by axially rotating the connection rod 8.

  The drive device 11 is fixed to the inner surface of the first side frame 5A. At least a portion of the drive device 11 is disposed between the first side frame 5A and the first end 9A of the reinforcing rod 9. The first end 9A of the reinforcing rod 9 vertically collides with the driving device 11 to receive a compressive load when a load of a side collision is applied from the seat right direction.

[1-2. effect]
According to the embodiment described above, the following effects can be obtained.
(1a) Since the connecting rod 8 penetrates the bracket 10 attached to the reinforcing rod 9 in the seat width direction, displacement of the reinforcing rod 9 in the direction perpendicular to the seat width direction due to an impact at the time of a side collision can be suppressed. . That is, when the reinforcing rod 9 tries to be displaced in the direction perpendicular to the sheet width direction, the displacement of the reinforcing rod 9 is also regulated by the bracket 10 coming into contact with the connecting rod 8 and the displacement thereof being regulated. As a result, the first end 9A of the reinforcing rod 9 easily abuts vertically on the drive device 11, and the load resistance to the side collision can be increased.

  (1b) Since the displacement can be restricted by the bracket 10 and the connection rod 8 with respect to the first end 9A which is easy to displace because it is not fixed to the first side frame 5A, the load resistance to side collisions is more reliably increased. Be

  (1c) Since the restricting portion 10A of the bracket 10 is formed by the through hole provided in the bracket 10, the displacement of the reinforcing rod 9 in any direction perpendicular to the seat width direction can be restricted.

[2. Other embodiments]
As mentioned above, although embodiment of this indication was described, it can not be overemphasized that this indication can take various forms, without being limited to the above-mentioned embodiment.

  (2a) In the vehicle seat 1 of the above-described embodiment, the bracket 10 may not necessarily be attached to the first end 9A of the reinforcing rod 9. For example, the bracket 10 may be attached to the central portion of the reinforcing rod 9 or the second end 9B.

  (2b) In the vehicle seat 1 of the above embodiment, the restriction portion 10A of the bracket 10 is not necessarily a through hole as long as the displacement of the bracket 10 in the direction perpendicular to the seat width direction can be restricted by the penetration of the connecting rod 8. It does not have to be.

  For example, as shown to FIG. 5A, the bracket 10 may have the control part 10B comprised by the notch by which the downward direction was open | released (that is, it becomes convex upwards). If the displacement direction of the reinforcing rod 9 at the time of a side collision is the seat longitudinal direction, the displacement of the reinforcing rod 9 can be regulated by such a regulating portion 10B.

  Furthermore, as shown to FIG. 5B, in the control part 10B, you may make small the width | variety of the notch below the part which the connection rod 8 penetrates. Thus, the connecting rod 8 can be locked to the restricting portion 10B, and the displacement of the bracket 10 with respect to the connecting rod 8 at the time of a side collision can be restricted. Furthermore, as shown to FIG. 5B, the notch of the control part 10B may be expanded toward a lower end. Thereby, the locking of the connection rod 8 to the regulating portion 10B is facilitated.

  In the case of using the notch-shaped restricting portion 10B, based on the relative positional relationship between the connecting rod 8 and the reinforcing rod 9, that is, based on the displacement direction of the reinforcing rod 9 with respect to the connecting rod 8 at the side collision. The direction of the notch is designed appropriately.

  (2c) In the vehicle seat 1 of the above embodiment, the second end 9B of the reinforcing rod 9 may not necessarily be fixed to the second side frame 5B. In addition, a plurality of brackets 10 may be attached to the reinforcing rod 9.

  (2d) The vehicle seat 1 of the above embodiment may be configured such that the left and right are reversed. For example, the drive device 11 may be fixed to the second side frame 5B, and the first end 9A of the reinforcing rod 9 may be fixed to the first side frame 5A.

  (2e) The vehicle seat 1 of the above embodiment can be applied to a seat used for a car other than a passenger car or a seat used for a vehicle other than a car, such as a railway vehicle, a ship, an aircraft and the like.

  (2f) The function of one component in the above embodiment may be distributed as a plurality of components, or the function of a plurality of components may be integrated into one component. In addition, part of the configuration of the above embodiment may be omitted. In addition, at least a part of the configuration of the above-described embodiment may be added to or replaced with the configuration of the other above-described embodiment. In addition, all the aspects contained in the technical thought specified from the wording as described in a claim are an embodiment of this indication.

1 ... vehicle seat, 2 ... seat cushion, 3 ... seat back,
4 ... cushion frame, 4A ... lower plate, 5 ... back frame,
5A: first side frame, 5B: second side frame, 5C: upper frame,
5D: lower frame, 6: first recliner, 6A: locking member, 7: second recliner,
8 ... connecting rod, 9 ... reinforcing rod, 9A ... first end, 9B ... second end,
10: Bracket, 10A, 10B: Regulating part, 11: Drive device,
12A: first auxiliary bracket, 12B: second auxiliary bracket,
12C third auxiliary bracket, 12D fourth auxiliary bracket.

Claims (3)

What is claimed is: 1. A vehicle seat comprising: a seat cushion; and a seat back pivotable relative to the seat cushion, wherein
A back frame having a seat back frame and having two side frames spaced apart in the sheet width direction;
Two recliners, each attached to one of the two side frames and configured to adjust the back and forth seat swing angle of the back frame;
A connecting rod connecting the two recliners in the sheet width direction;
A reinforcing rod extending in the sheet width direction and disposed between the two side frames;
A bracket attached to the reinforcing rod and having a restricting portion through which the connecting rod penetrates in the sheet width direction;
, A vehicle seat. A vehicle seat according to claim 1, wherein
The reinforcing rod has at least one end not fixed to the two side frames,
The vehicle seat, wherein the bracket is attached to the at least one end. The vehicle seat according to claim 1 or 2, wherein
The vehicle seat, wherein the restriction portion is configured by a through hole provided in the bracket.