JP2019104286A - Vehicle seat - Google Patents

Abstract

To provide a vehicle seat of which the tensile force in the width direction of the sheet-like member is made different on a part from other parts in the longitudinal direction of the sheet-like member.SOLUTION: Of the vehicle seat, the distance Ww1 between the seat left end of the support intermediate part 34 on the seat left side and the seat right end of the support intermediate part 34 on the seat right side on the support member 22, is longer than the distance Ww2 between the seat left end of the lower part 30 of the support part on the seat left side and the seat right end of the lower part 30 of the support part on the seat right side, and the distance Ww3 between the seat left end of the upper part 38 of the support part on the seat left side of the seat and the seat right end of the upper part 38 of the support part on the seat right side. For this reason, at the arrangement area A, the tensile force of the seat member 42 in the width direction becomes larger to compare with the arrangement, area A, or the area on the lower side of the seat and the arrangement area A, or the area on the seat upper side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle seat.

  In the vehicle seat disclosed in Patent Document 1 below, when the tension adjustment mechanism is operated, the width direction movable bar is moved in the sheet width direction with respect to the width direction fixing bar. By this, the tension in the sheet width direction of the sheet elastic body can be adjusted. However, with this configuration, it is not possible to partially change the magnitude of tension of the sheet elastic body in the longitudinal direction of the seat (in the seat vertical direction, in the case of a seatback, the seat longitudinal direction in the case of a seat cushion).

JP, 2010-259617, A

  In view of the above facts, the present invention provides a vehicle seat in which the magnitude of tension in the width direction of the sheet-like member can be made different between a part in the longitudinal direction of the sheet-like member and the other part. It is the purpose.

  The vehicle seat according to claim 1 is provided with a support member having a pair of support portions provided along the seat width direction both ends of the seat main body, and a pair of cylindrical portions provided at the width direction both ends. The difference between the distance between the widthwise end portions and the distance between the pair of support portions is set to be larger than the other region in a partial region in the seat longitudinal direction of the seat main body, and each of the pair of cylindrical portions And a sheet-like member to which a tension in the seat width direction is applied when the pair of support portions enter.

  According to the vehicle seat of the first aspect, in the partial region in the seat longitudinal direction of the sheet-like member, the distance between the widthwise end portions of the sheet-like member and the distance between the pair of support portions of the support member is the seat It is larger than the other area of the seat longitudinal direction in the seat member. For this reason, in a state in which the pair of support portions of the support member enter each of the pair of cylindrical portions of the sheet member and the tension in the width direction is applied to the main body portion of the sheet member, The tension applied to the body portion of the sheet member is greater than the tension applied to the body portion of the sheet member in the other regions described above. By this, the magnitude of the tension in the width direction of the sheet-like member can be made different between a part in the longitudinal direction of the sheet-like member and the other part.

  As described above, in the vehicle seat according to claim 1, the magnitude of the tension in the width direction of the sheet-like member can be made different between a part in the longitudinal direction of the sheet-like member and the other part.

It is a perspective view of a seat back of a seat for vehicles in a 1st embodiment. It is a front view of a spring mechanism of a seat for vehicles concerning a 1st embodiment, (A) is a front view of a support wire of a spring mechanism, (B) is a front view of a sheet-like member of a spring mechanism, (C) ) Is a front view showing a state in which the sheet-like member is attached to the support wire. It is a front view of a spring mechanism of a seat for vehicles concerning a 2nd embodiment, (A) is a front view of a support wire of a spring mechanism, (B) is a front view of a sheet-like member of a spring mechanism, (C) ) Is a front view showing a state in which the sheet-like member is attached to the support wire.

  Next, embodiments of the present invention will be described based on FIGS. 1 to 3. In each drawing, the arrow FR indicates the seat front side (the seat front-rear direction front side) of the vehicle seat 10, the arrow LH indicates the seat left side (the seat left-right direction left side), and the arrow UP indicates the seat upper side (seat vertical direction Upper side). In each of the following embodiments, the vertical direction of the seat is the vertical direction of the seat in the claims. Furthermore, in the description of each embodiment below, the same reference numerals are given to the basically same parts as those of the above-described embodiment and the detailed description thereof. Omit.

<Configuration of First Embodiment>
As shown in FIG. 1, a vehicle seat 10 according to the first embodiment includes a seat back 12. The seat back 12 as a seat body constitutes a backrest of the vehicle seat 10. A seat cushion (not shown) constituting a seat surface portion of the vehicle seat 10 is disposed on the seat front side of the seat lower portion of the seatback 12 and is seated on the vehicle seat 10 above the seatback 12 A headrest (not shown) for supporting the head of the occupant from behind the seat is disposed.

  The seat back 12 includes a seat back frame 14. The seat back frame 14 constitutes a framework of the seat back 12. The seat back frame 14 includes an upper frame 16. The longitudinal direction of the upper frame 16 is along the seat width direction, and a pair of side frames 18 is provided at both longitudinal end sides of the upper frame 16. The side frames 18 are arranged to face each other in the seat width direction, and the upper side end of the side frame 18 on the left side in the seat width direction is the left side end in the seat width direction (longitudinal direction) of the upper frame 16 The seat upper end of the side frame 18 on the right side in the seat width direction is connected to the right end of the upper frame 16 in the seat width direction (longitudinal direction).

  A spring mechanism 20 is provided between the side frames 18, and a cushion pad (not shown) constituting the seat back 12 is disposed on the seat front side relative to the spring mechanism 20. As shown in FIG. 1, FIG. 2 (A) and FIG. 2 (C), the spring mechanism 20 includes a support member 22.

  The support member 22 is formed, for example, by appropriately bending and forming a rod-like or pipe-like metal material such as stainless steel. As shown in FIG. 2A, the support member 22 includes a base 24. The base 24 is provided under the seat of the seat back frame 14, and the longitudinal direction of the base 24 is in the seat width direction. First connecting portions 26 are provided on both sides of the base 24 in the seat width direction (longitudinal direction). The first connecting portion 26 on the left side in the seat width direction extends from the left end in the seat width direction (longitudinal direction) of the base 24 to the front left side of the seat, and the first connecting portion 26 on the right side in the seat width direction is the seat of the base 24 The seat extends from the right end in the width direction (longitudinal direction) to the front right of the seat.

  A support 28 is provided on the side opposite to the base 24 of the first connection parts 26. The support portion 28 includes a support portion lower portion 30, a second connection portion 32, a support portion middle portion 34, a third connection portion 36, and a support portion upper portion 38. The longitudinal direction of the support lower portion 30 is the vertical direction of the seat, and the seat lower end of the support lower portion 30 on the left side of the seat fluid is connected to the seat left front end of the first connecting portion 26 on the seat left, The seat lower end of the support lower portion 30 on the right side of the seat liquid is connected to the seat right front end of the first connecting portion 26 on the seat right side.

  A second connecting portion 32 is provided on the seat upper side of the support portion lower portion 30. The second connecting portion 32 of the support 28 on the left side of the seat extends from the upper side end of the lower portion 30 of the support on the left side of the seat to the upper left of the seat, and the second connecting portion 32 of the support 28 on the right of the seat is the seat It extends from the seat upper end of the right support lower portion 30 to the seat upper right side. A support intermediate portion 34 is provided on the seat upper side of the second connecting portion 32. The longitudinal direction of the support portion middle portion 34 is the vertical direction of the seat, and the seat lower end of the support portion middle portion 34 is, for example, 150 mm away above the hip point in the seat 10 of the present vehicle. The seat upper end of the support portion middle portion 34 is set, for example, at a position 300 mm above the seat than the hip point in the vehicle seat 10.

  An arrangement area A of the support portion middle portion 34 including between the seat upper end and the seat lower end of the support portion middle portion 34 is, for example, a portion facing the waist of the occupant seated in the seat 10 for the vehicle. The seat upper side of the arrangement area A is a portion facing the back of the occupant seated in the vehicle seat 10. The seat lower end of the support left middle portion 34 of the seat is connected to the seat upper left end of the second link 32 at the left of the seat, and the seat lower end of the support middle portion 34 at the right of the seat is the first position of the seat right 2 is connected to the seat upper right end of the connecting portion 32;

  A third connecting portion 36 is provided on the seat upper side of the support portion middle portion 34. The third connecting portion 36 of the support 28 on the left side of the seat extends from the seat upper end of the support intermediate portion 34 on the left side of the seat to the upper right of the seat, and the third connecting portion 36 of the support 28 on the right of the seat is the seat It extends from the seat upper end of the right support intermediate portion 34 to the seat left and right. A support upper portion 38 is provided on the seat upper side of the third connecting portion 36.

  The longitudinal direction of the support upper portion 38 is in the vertical direction of the seat, and the seat lower end of the support upper portion 38 on the left side of the seat is connected to the seat upper right end of the third connecting portion 36 on the left side of the seat. The seat lower end of the support upper portion 38 is connected to the seat upper left end of the third connecting portion 36 on the right side of the seat. Furthermore, an extension 40 is provided on the seat upper side of both support upper portions 38 (ie, the seat upper side of both supports 28). The extension 40 on the left side of the seat extends from the seat upper end of the support upper portion 38 on the left side of the seat to the upper left of the seat, and the extension 40 on the right of the seat is the seat upper side of the support upper portion 38 on the right of the seat It extends from the end to the seat upper right side.

  Thus, in the support member 22 in the present embodiment, the support portion middle portion 34 of the support portion 28 on the seat left side is lower than the support portion lower portion 30 and the support portion upper portion 38 of the support portion 28 on the seat left side. The support middle portion 34 of the support 28 on the right side of the seat is arranged on the right side of the seat relative to the support lower portion 30 and the support upper portion 38 of the support 28 on the right side of the seat. Therefore, the distance Ww1 between the seat left end of the support intermediate portion 34 on the left side of the seat in the support member 22 and the seat right end of the support intermediate portion 34 on the right of the seat is the seat left end of the support lower portion 30 of the seat left Greater than the distance Ww2 between the seat right end of the lower support 30 and the seat right end of the seat and the distance Ww3 between the left end of the seat upper support 38 and the right end of the seat upper support 38 .

  On the other hand, as shown in FIG. 1, FIG. 2 (A), and FIG. 2 (B), the spring mechanism 20 includes a sheet member 42. The seat member 42 is at least formed of a sheet-like member having elasticity in the seat width direction. Cylindrical portions 44 are formed on both sides of the seat member 42 in the seat width direction.

  The cylindrical portion 44 is the sheet width direction end portion of the sheet material and the thickness of the sheet material in the sheet material in a state where both ends in the seat width direction in the sheet material forming the sheet member 42 are folded to the seat width direction center side. It is formed by stitching the seat width direction end and the opposing portion of the sheet material in the direction. The support 28 of the support member 22 can be disposed inside the cylindrical portion 44. With the cylindrical portions 44 on both sides in the seat width direction crushed in the thickness direction of the seat member 42, the distance between the seat left end of the cylindrical portion 44 on the seat left and the seat right end of the cylindrical portion 44 on the seat right Ws is smaller than the distance Ww2 between the lower support lower portions 30 of the support members 22 and the distance Ww3 between the upper support upper portions 38 of the support members 22. Therefore, when the support portion 28 of the support member 22 enters each of the cylindrical portions 44, the seat member 42 is pulled outward in the seat width direction and elastically stretched (elastically deformed).

  In addition, a notch 46 is formed in each of the cylindrical portions 44. These notches 46 are provided in the middle in the vertical direction of the cylindrical portion 44, and the notches 46 of the cylindrical portion 44 on the left side of the seat are opened to the left side of the seat, and the notches on the cylindrical portion 44 on the right side of the seat The part 46 is opened to the right side of the seat. Each cylindrical portion 44 is divided into two in the vertical direction of the seat by the cutout portion 46, and in the state where each support portion 28 of the support member 22 is in the cylindrical portion 44, the support portion 28 is cylindrical in the cutout portion 46 It is exposed to the outside of the part 44.

  As shown in FIG. 1 and FIG. 3C, brackets 48 are provided at portions corresponding to the notches 46 in the support portions 28 of the support member 22. The bracket 48 is connected to the support 28. Also, the bracket 48 on the seat left side is connected to the side frame 18 on the seat left side of the seat back frame 14, and the bracket 48 on the seat right side is connected to the side frame 18 on the seat right side of the seat back frame 14. The spring mechanism 20 is thereby attached to the seat back frame 14.

<Operation and effect of the first embodiment>
In the vehicle seat 10, the support portion 28 on the seat left side of the support member 22 is inserted from the seat lower side of the seat member 42 into the inside of the tubular portion 44 on the seat left side of the seat member 42 The portion 28 is inserted from the lower side of the seat 42 to the inside of the tubular portion 44 on the right side of the seat. The brackets 48 are attached to the respective support portions 28 in a state where both the support portions 28 penetrate the cylindrical portion 44, and further, the brackets 48 are connected to the side frames 18 of the seat back frame 14. The spring mechanism 20 is thereby attached to the seat back frame 14.

  By the way, in a state where the cylindrical portion 44 of the seat member 42 is crushed in the thickness direction of the seat member 42, the left end of the seat 44 and the right end of the seat 44 are formed. The distance Ws is smaller than the distance Ww2 between the lower support lower portions 30 of the support members 22 and the distance Ww3 between the upper support upper portions 38 of the support members 22. Therefore, in a state where the spring mechanism 20 is attached to the seat back frame 14, the seat member 42 is pulled outward in the seat width direction and elastically extends. Thus, the seat member 42 is given tension in the seat width direction.

  The tension in the seat width direction of the seat member 42 increases as the stretch of the seat member 42 when the seat member 42 is pulled outward in the seat width direction increases. The size of the extension of the seat member 42 is the distance between the seat left end of the support portion 28 on the seat left side of the support member 22 and the seat right end of the support portion 28 on the seat right side and the state where the seat member 42 is not pulled. The difference with the seat width direction dimension of the seat member 42 in

  Here, in the present embodiment, the distance Ww1 between the seat left end of the support intermediate portion 34 on the seat left in the support member 22 and the seat right end of the support intermediate portion 34 on the seat right is the lower side of the support on the seat left. Distance Ww2 between the seat left end of the portion 30 and the seat right end of the support lower portion 30 of the seat right and the seat left end of the support upper portion 38 of the seat left and the seat right end of the support upper portion 38 of the seat right Is larger than the interval Ww3. For this reason, the difference Wg1 between the space Ww1 and the seat width direction dimension Ws of the seat member 42 in a state in which both tubular portions 44 are crushed in the thickness direction of the seat member 42 is the space Ww2 and the seat width direction of the seat member 42 The difference Wg2 between the dimension Ws and the distance Ww3 is larger than the difference Wg3 between the seat width direction dimension Ws of the seat member 42 and the difference Wg2.

  Therefore, in the present embodiment, in the arrangement area A of the support portion middle portion 34 (see FIG. 2A), the area under the seat than the arrangement area A (that is, the support of the support portion 28 of the support member 22) The width of the seat member 42 in the seat width direction is greater than that of the lower portion of the seat and the region above the seat A (i.e., the region of the upper portion of the support portion of the support portion 22 of the support member 22). Largely, the sheet member 42 is strongly pulled. Therefore, in the arrangement area A, the tension in the seat width direction of the seat member 42 is larger than the area below the seat than the arrangement area A and the area above the seat than the arrangement area A.

  As described above, since the tension of the seat member 42 in the placement area A can be larger than the tension of the seat member 42 on the seat upper side than the placement area A, the sitting posture and the sitting comfort when the occupant is seated on the vehicle seat 10 Etc. can be improved.

  In addition, the tension of the sheet member 42 in the arrangement area A with one sheet member 42 and one support member 22 is a sheet in the area under the seat than the arrangement area A and the area in the seat lower than the arrangement area A. It can be larger than the tension of the member 42. Therefore, the configuration of the spring mechanism 20 can be simplified and the cost can be reduced.

  Furthermore, in making the tension of the seat member 42 larger than the tension of the seat member 42 in the area below the seat A and the area below the seat A, the assembly of the spring mechanism 20 and the spring mechanism 20 At the time of assembly to the seat back frame 14, adjustment work of tension etc. is unnecessary. For this reason, the fall of the workability of the assembly of the spring mechanism 20 and the attachment to the seat back frame 14 of the spring mechanism 20 can be suppressed.

Second Embodiment
Next, a second embodiment will be described.

  As shown in FIG. 3 (A), the support portion 28 of the support member 22 of this embodiment is linear unlike the support portion 28 of the support member 22 of the first embodiment. .

  On the other hand, as shown in FIG. 3B, the sheet member 42 of the present embodiment includes the first wide portion 52, the narrow portion 54, and the second wide portion 56. The first wide portion 52 is a seat lower portion of the seat member 42, and the second wide portion 56 is a seat upper portion of the seat member 42. The narrow portion 54 is provided between the first wide portion 52 and the second wide portion 56 in the seat vertical direction.

  The seat lower end of the narrow portion 54 is set, for example, at a position 150 mm above the hip point of the seat 10 for the vehicle, and the upper end of the narrow portion 54 is, for example, a seat for the vehicle It is set at a position 300 mm above the seat than the hip point at 10. An arrangement area A of the narrow portion 54 including between the seat upper end and the seat lower end of the narrow portion 54 is, for example, a portion facing the waist of the occupant seated in the seat 10 for the vehicle. The seat upper side relative to the arrangement area A is a portion facing the back of the occupant seated in the vehicle seat 10.

  The seat left end of the seat left tubular portion 44 of the narrow portion 54 is disposed on the seat right side relative to the seat left end of the seat left tubular portion 44 in each of the first wide portion 52 and the second wide portion 56 ing. In addition, the seat right end of the seat right cylindrical portion 44 of the narrow portion 54 is closer to the left side of the seat than the seat right end of the seat right cylindrical portion 44 in each of the first wide portion 52 and the second wide portion 56 It is arranged.

  Therefore, the distance Ws1 between the seat left end of the seat left tubular portion 44 and the seat right end of the seat right tubular portion 44 in the narrow portion 54 is the cylinder left side of the seat in the first wide portion 52 Space Ws2 between the left side end of the seat of the seat 44 and the right side end of the tubular portion 44 of the right side of the seat and the left side end of the tubular portion 44 of the left side of the seat at the second wide portion 56 and the tubular portion 44 of the right side of the seat The distance between the right side end of the seat and the distance Ws3 is smaller.

  Therefore, the difference Wg21 between the distance Ws1 and the distance Ww between the seat left end of the support 28 on the seat left of the support member 22 and the seat right end of the support 28 on the seat right is Ws2, Ww, Ws3, and Ws2. It becomes larger than difference Wg23 with interval Ww. Thus, in the present embodiment, in the arrangement area B of the narrow portion 54 (see FIG. 3B), the sheet is larger than the arrangement area B and the area of the first wide area 52 and the area of the second wide area 56 The extension to the seat width direction outward of the member 42 is large, and the seat member 42 is strongly pulled. Therefore, in the disposition area B, the tension in the seat width direction of the seat member 42 is larger than the area below the seating area B and the area above the seating area B.

  As described above, since the tension of the seat member 42 in the arrangement area B can be made larger than the tension of the seat member 42 on the seat upper side than the arrangement area B, the sitting posture and comfort when the occupant is seated on the vehicle seat 10 Etc. can be improved.

  In addition, the tension of the sheet member 42 in the above-mentioned arrangement area B by one sheet member 42 and one support member 22 is a sheet in the area under the seat than the arrangement area B and the area in the seat lower than the arrangement area B It can be larger than the tension of the member 42. Therefore, the configuration of the spring mechanism 20 can be simplified and the cost can be reduced.

  Furthermore, in making the tension of the seat member 42 larger than the tension of the seat member 42 in the area below the seating area B and in the area below the seating area B, the assembly of the spring mechanism 20 and the spring mechanism 20 At the time of assembly to the seat back frame 14, adjustment work of tension etc. is unnecessary. For this reason, the fall of the workability of the assembly of the spring mechanism 20 and the attachment to the seat back frame 14 of the spring mechanism 20 can be suppressed.

  In each of the above-described embodiments, the seat width direction end portion of the sheet material and the sheet in the sheet material in a state where both ends in the seat width direction in the sheet material forming the sheet member 42 are folded to the seat width direction center side. The tubular portion 44 is formed by stitching the sheet width end of the sheet material and the portion facing the sheet width direction in the thickness direction of the material. However, for example, in the case of forming the sheet member 42 by so-called “textile”, the tubular portion 44 may be formed when the sheet member 42 is woven by bag weaving by double weave or the like. In such a configuration, in forming the cylindrical portion 44, the process of folding both ends in the seat width direction of the sheet material forming the sheet member 42 and the stitching process become unnecessary.

  In each of the above-described embodiments, the sheet member 42 is in the form of a sheet of cloth or the like, but may be in the form of a net, for example. That is, the material and the like of the seat member 42 are not particularly limited as long as they have a certain size in the seat vertical direction (seat vertical direction) and the seat width direction and have elasticity in the seat width direction. .

  Furthermore, in each of the above-described embodiments, the region A where the tension of the seat member 42 is larger than the other regions in the spring mechanism 20 and the region B are set at the seat vertical direction (seat longitudinal direction) middle portion in the seat member 42 It was However, such areas A and B may be areas including the seat upper end of the seat member 42 or may be areas including the seat lower end of the seat member 42.

  Moreover, each above-mentioned embodiment was the structure which applied this invention to the seat back 12 by making the seat back 12 into a seat main body. However, the present invention may be applied to the seat cushion of the vehicle seat 10 as the seat body. When the present invention is applied to a seat cushion, the seat longitudinal direction is the seat longitudinal direction.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 22 Support member 28 Support part 42 Seat member 44 Tubular part A area | region (The area | region of the seat longitudinal direction of a seat body)
B area (a part of the vertical seat area of the seat body)

Claims (1)

A support member having a pair of support portions provided along the seat width direction both ends of the seat body, each of which is held by the seat body;
A pair of cylindrical portions are provided at both end portions in the width direction, and the difference between the distance between the end portions in the width direction and the distance between the pair of support portions in a part of the seat longitudinal direction A sheet-like member which is set to a large size and in which the tension in the seat width direction is given by the pair of support portions being inserted into each of the pair of cylindrical portions;
Seat for vehicles equipped with.