JP2016199060A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable fine adjustment of tension of a planar member in a vehicular seat for constructing a plane for supporting an occupant by the planar member stretched on a frame.SOLUTION: A vehicular seat 1 includes: a frame 2; a planar member 3 stretched on the frame 2; and tension adjustment means for adjusting tension applied to a prescribed portion of the planar member 3. In the vehicular seat, a plurality of tension adjustment means are arranged side by side in a prescribed direction along the frame 2. It is preferable that the plurality of tension adjustment means are provided symmetrically with respect to at least one of a plane for dividing the frame 2 into two of right and left sides and a symmetry plane for vertically dividing the frame into two.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat in which a surface for supporting an occupant is constructed by a planar member stretched over a frame.

  Such a sheet is disclosed in Patent Document 1 below. The seat (seat back) described in Patent Document 1 can adjust the tension of the net member stretched over the frame in the vertical direction and the horizontal direction (width direction).

JP 2012-228899 A

  The technique described in Patent Document 1 includes a tension adjusting unit that adjusts the tension in the left-right direction and a tension adjusting unit that adjusts the tension in the vertical direction. Cannot make fine adjustments to match For example, left-right or up-down asymmetric adjustment cannot be performed, such as increasing the tension from the left side to the right side.

  An object of the present invention is to enable fine adjustment of the tension of a planar member in a vehicle seat in which a plane that supports an occupant is constructed by a planar member stretched over a frame.

  In order to solve the above problems, a vehicle seat according to the present invention includes a frame, a planar member stretched over the frame, and tension adjusting means for adjusting a tension acting on a predetermined portion of the planar member. The tension adjusting means is provided in a plurality along the predetermined direction along the frame.

  The tension adjusting means may be provided symmetrically with respect to at least one of a plane that bisects the frame left and right and a symmetry plane that bisects the frame vertically.

  The tension adjusting means may adjust the tension acting on the predetermined part of the planar member by changing the position of the part directly or indirectly connected to the predetermined part of the planar member. .

  The tension adjusting means is configured to determine a predetermined portion of the planar member depending on whether a portion directly or indirectly connected to the predetermined portion of the planar member is hooked on any of a plurality of hook portions provided at the rear of the seat. It is good to adjust the tension acting on the part.

  Since the vehicle seat according to the present invention is provided with a plurality of tension adjusting means arranged in a predetermined direction along the frame, the tension of the planar member can be finely adjusted as compared with the conventional case.

  If the tension adjusting means is provided symmetrically with respect to at least one of the plane bisecting the frame left and right and the plane bisecting up and down, the tension of the planar member can be equalized with respect to the symmetry plane. It is also possible to set so that a difference in tension occurs between one side and the other side of the symmetry plane.

  The tension adjusting means can adjust the tension acting on the predetermined part of the planar member by changing the position of the part directly or indirectly connected to the predetermined part of the planar member, The tension acting on the predetermined portion of the planar member can be adjusted by hooking the portion directly or indirectly connected to the predetermined portion of the planar member to any of the plurality of hooks. With such a configuration, it is possible to easily construct a plurality of tension adjusting means arranged along a predetermined direction.

It is an external view of the vehicle seat according to the first embodiment. FIG. 2 is an exploded view of the (seat back) of the vehicle seat shown in FIG. 1 (only the tension adjusting means provided on one side in the left-right direction of the frame is shown, and the other side is symmetrical) Omitted). It is the figure which showed typically the cross section of the vehicle seat shown in FIG. (A) is the figure which showed typically the cross section of the vehicle seat concerning a 2nd Example. (B) is the figure which showed the state by which the hook member was hooked by the hook part. It is the figure which showed the assembly of a planar member, a relay member, and a hook member. It is the figure which showed typically the cross section of the vehicle seat concerning a 3rd Example. It is the figure which showed typically the cross section of the vehicle seat concerning 4th Example. It is an external view of the assembly of the main frame and position control member of the vehicle seat concerning a 4th example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Unless otherwise specified, the front-rear direction in the following description refers to the advancing / retreating direction of the vehicle on which the vehicle seat 1 is mounted, and the up-down direction refers to the up-down direction of the vehicle. The left-right direction (width direction) means a direction orthogonal to the front-rear direction and the up-down direction. Unless otherwise specified, each direction refers to a direction when the seat back 1a is standing.

  In the vehicle seat 1 according to the present embodiment, a surface that supports an occupant is constructed by the planar member 3 being stretched over the frame 2. The planar member 3 may be any material as long as it can be stretched over the frame 2, and may be a net (mesh) shape as shown in the following embodiments. It may be cloth-like. Hereinafter, a specific configuration (first embodiment to fourth embodiment) will be described on the assumption that the structure is constructed in the seat back 1a (backrest portion) of the vehicle seat 1.

[First embodiment (see FIGS. 1 to 3)]
The vehicle seat according to the first embodiment will be described. The first adjustment member 10 is fixed to the frame 2 having a substantially square shape in front view of the vehicle seat according to this example. The first adjustment member 10 is a member that is long in the up-down direction in which a hard plate material is bent, and includes a fixing portion 11, a bolt locking portion 12, and a sliding portion 13. The fixing portion 11 is a portion that extends in the left-right direction when viewed in cross section, and is a portion that is fixed to the frame 2. Any method may be used for joining the fixing portion 11 and the frame 2. When both the frame 2 and the first adjustment member 10 (fixed portion 11) are metal, they can be joined by welding.

  The bolt locking portion 12 is a portion along the front-rear direction as seen in a cross section, and is a portion to which an adjustment bolt 21 described later is fastened. In this example, an adjustment nut 122 communicating with a plurality of through holes 121 arranged in the vertical direction is fixed, and the adjustment nut 122 serves as the bolt locking portion 12. The sliding portion 13 is a portion extending in the width direction outside from the bolt locking portion 12 when viewed in cross section, and curved from there and directed inward in the width direction.

  The vehicle seat according to this example includes a second adjustment member 20 different from the first adjustment member 10. A plurality of second adjustment members 20 are provided side by side in the vertical direction with respect to the relay member 30 described in detail later, and are positioned so as to face the bolt locking portions 12 of the first adjustment member 10. The number of the second adjusting members 20 matches the number of the adjusting nuts 122. The interval between the second adjustment members 20 arranged in the vertical direction coincides with the interval between the corresponding adjustment nuts 122. An adjustment bolt 21 is fixed to each of the plurality of second adjustment members 20. Each adjustment bolt 21 is fixed to each adjustment member by sandwiching the second adjustment member 20 between its head and the fixing nut 22. Each adjustment bolt 21 is screwed to the adjustment nut 122.

  The relay member 30 is a cloth material (for example, cotton cloth). Each second adjustment member 20 is fixed along the side edge of one side of the relay member 30. The planar member 3 is connected to the other side edge of the relay member 30. That is, the relay member 30 is a member that connects each second adjustment member 20 and the planar member 3. As will be described later, the relay member 30 transmits a force to the planar member 3, but in order to prevent the force from being absorbed by the expansion and contraction of the relay member 30, the material constituting the relay member 30 is It is desirable that the elasticity is as low as possible.

  In this example, the first adjustment member 10, the second adjustment member 20, the relay member 30, and the like are provided on both the left and right sides. Each member is symmetric (left-right symmetric) with respect to a plane that bisects the frame 2 to the left and right.

  The action (the tension adjusting action of the planar member 3) of the vehicle seat according to this example configured as described above is as follows. When the adjustment bolt 21 is screwed to the corresponding adjustment nut 122, the planar member 3 is pulled via the second adjustment member 20 and the relay member 30, and the planar member 3 is stretched over the frame 2. It becomes. When adjusting the tension of the planar member 3, the position of any of the adjustment bolts 21 is changed. That is, the distance between the adjustment bolt 21 and the adjustment nut 122 is changed by rotating the adjustment bolt 21 screwed into the adjustment nut 122. If the adjustment bolt 21 is rotated in the direction to be tightened with respect to the adjustment nut 122, the adjustment bolt 21 is moved outward in the width direction. Then, since the second adjustment member 20 connected to the moved adjustment bolt 21 moves outward in the width direction, the planar member 3 is loosened via the relay member 30 connected to the second adjustment member 20. That is, the tension at a predetermined part of the planar member 3 (a part at a height where the moved adjustment bolt 21 is located) is lowered. On the other hand, if the adjustment bolt 21 is rotated in the direction of loosening with respect to the adjustment nut 122, the adjustment bolt 21 moves inward in the width direction. Then, since the second adjustment member 20 connected to the moved adjustment bolt 21 moves inward in the width direction, the planar member 3 is pulled via the relay member 30 connected to the second adjustment member 20. . That is, the tension at a predetermined part of the planar member 3 (a part at a height where the moved adjustment bolt 21 is located) increases. In addition, since the relay member 30 is in the state which contacted the sliding part 13 of the 1st adjustment member 10 which forms a smooth curved surface, a motion is smooth.

  Thus, in this example, by changing the position of the adjustment bolt 21, the planar member 3 connected to the adjustment bolt 21 indirectly (via the second adjustment member 20 or the relay member 30) is predetermined. The tension of the part can be increased or decreased. And since such a tension adjusting means is provided with two or more along the part extended in the up-down direction of the flame | frame 2, the tension | tensile_strength adjustment in the up-down direction of the planar member 3 is attained. Further, since the tension adjusting means is provided symmetrically with respect to the plane that bisects the frame 2 left and right, the tension of the left and right planar members 3 can be equalized, and a difference in tension occurs between the left side and the right side. It can also be set as follows.

[Second embodiment (see FIGS. 4 and 5)]
The vehicle seat according to the second embodiment will be described focusing on differences from the first embodiment. The vehicle seat according to this example includes a backboard 40, a relay member 50, and a hooking member 60. The back board 40 is a plate-like member fixed so as to be bridged behind the frame 2 and constructs the rear surface of the seat back. Any method may be used for fixing the frame 2 and the backboard 40. A hook 41 is formed on the backboard 40.

  The hook portion 41 may have any structure and shape as long as the hook member 60 can be hooked. In this example, it is a bowl-shaped part which goes inward in the width direction from the base end side. A plurality of the hooking portions 41 are arranged in the width direction and the vertical direction. The hook 41 is provided symmetrically with respect to a plane that bisects the frame 2 to the left and right. The number of hooks 41 arranged in the width direction and the number of hooks 41 arranged in the vertical direction can be changed as appropriate. Further, the interval between the hooking portions 41 arranged in the width direction and the interval between the hooking portions 41 arranged in the vertical direction may be the same (equal intervals) or may be different. Further, in this example, the hooks 41 are arranged in a straight line in the vertical direction, but may not be in a straight line. For example, the position in the width direction of the hook portion 41 located at the outermost position in the width direction among the hook portions 41 located at a certain height and the position of the hook portion 41 located at the outermost position in the width direction different from that. May be different.

  The relay member 50 is a cloth material (for example, cotton cloth). As will be described later, the relay member 50 transmits a force to the planar member 3, but in order to prevent the force from being absorbed by the expansion and contraction of the relay member 50, the material constituting the relay member 50 is It is desirable that the elasticity is as low as possible. The planar member 3 is connected to one side of the relay member 50. A plurality of hook members 60 are connected to the other side of the relay member 50. In the present embodiment, the portion where the cloth material is folded is located on the other side of the relay member 50, and a plurality of substantially U-shaped cross-section portions are generated by forming a plurality of cuts arranged in the vertical direction in the folded portion. A string-like hooking member 60 is hooked on each of these.

  The string-like hooking member 60 has an annular shape as a whole. The material constituting the hook member 60 is also preferably low in elasticity for the same reason as the relay member 50. The number of hook members 60 arranged in the vertical direction is the same as the number of hook parts 41 arranged in the vertical direction (the number of hook parts 41 when the number of hook parts 41 arranged in the width direction is considered as one).

  The action (the tension adjusting action of the planar member 3) of the vehicle seat according to this example configured as described above is as follows. Each of the hook members 60 is located at a corresponding height and hooked on any one of the plurality of hook portions 41 arranged in the width direction, whereby the planar member 3 is stretched over the frame 2. When the tension of the planar member 3 is adjusted, the hooking portion 41 to which the hooking member 60 is hooked is changed. If the hooking member 60 is hooked on the hooking portion 41 located on the outer side in the width direction than the hooking portion 41 hooked at that time, the force for pulling the planar member 3 via the relay member 50 is weakened. The member 3 is loosened. That is, the tension at a predetermined part of the planar member 3 (a part at a height where the hooking member 60 where the position of the hooking part 41 to be hooked is changed) is lowered. On the other hand, if the hook member 60 is hooked on the hook portion 41 located on the inner side in the width direction than the hook portion 41 hooked at that time, the force for pulling the planar member 3 via the relay member 50 is increased. The planar member 3 is pulled. That is, the tension of a predetermined portion of the planar member 3 (a portion at a height where the hooking member 60 where the position of the hooking portion 41 to be hooked is changed) is increased.

  Thus, in this example, the planar member connected indirectly to the hooking member 60 (via the relay member 50) by changing the position of the hooking portion 41 to which the hooking member 60 is hooked in the width direction. It is possible to increase or decrease the tension at the predetermined portion 3. And since such a tension adjusting means is provided with two or more along the part extended in the up-down direction of the flame | frame 2, the tension | tensile_strength adjustment in the up-down direction of the planar member 3 is attained. Further, since the tension adjusting means is provided symmetrically with respect to the plane that bisects the frame 2 left and right, the tension of the left and right planar members 3 can be equalized, and a difference in tension occurs between the left side and the right side. It can also be set as follows.

[Third embodiment (see FIG. 6) / Fourth embodiment (see FIGS. 7 and 8)]
The vehicle seat according to the third embodiment and the fourth embodiment will be described focusing on differences from the first embodiment and the second embodiment. The vehicle seat according to the third and fourth embodiments includes a frame (referred to as a main frame 70) different from the frame 2 on which the planar member 3 is stretched.

  In the third embodiment, the basic part of the tension adjusting mechanism of the planar member 3 by the tension adjusting means is the same as that of the first embodiment (in other words, the third embodiment is a modification of the first embodiment). . The first adjustment member 10 is fixed to the main frame 70. The configurations of the first adjustment member 10, the second adjustment member 20 (including the adjustment bolt 21 and the adjustment nut 122), and the relay member 30 are the same.

  The planar member 3 connected to the relay member 30 is stretched over the frame 2 located inside the main frame 70. That is, in this example, the member (main frame 70) on which the first adjustment member 10 is supported is different from the member on which the planar member 3 is stretched. When the adjustment bolt 21 is moved inward in the width direction, the tension at a predetermined portion of the planar member 3 (a portion at a height where the moved adjustment bolt 21 is located) is lowered. When the adjustment bolt 21 is moved outward in the width direction, the tension at a predetermined portion of the planar member 3 (a portion at a height where the moved adjustment bolt 21 is located) increases. That is, compared with this example and the first embodiment, it is common to increase or decrease the tension of the planar member 3 by the movement of the adjustment bolt 21, but the movement direction of the adjustment bolt 21 (in the width direction inside or outside), The relation of increase / decrease in the tension of the planar member 3 is opposite.

  In this example, a pad 90 which is a cushion material covering the main frame 70 is provided. The pad 90 is covered with a pad cover 91, and the pad cover 91 is connected to the relay member 30. In this example, the opposite end of the pad cover 91 connected to the relay member 30 is fixed to the main frame 70 via a fixing member 911. Specifically, a fitting groove 71 is formed in the main frame 70, and a fixing member 911 is fitted in the fitting groove 71. Thus, the planar member 3 and the pad cover 91 are connected to the relay member 30. Therefore, when the position of the adjustment bolt 21 changes, the tension on the pad cover 91 as well as the planar member 3 changes via the relay member 30, but at least a part of the force via the relay member 30 is changed. Is transmitted to the planar member 3, the tension of the planar member 3 is increased or decreased by the change in the position of the adjusting bolt 21.

  In the fourth embodiment, the basic part of the tension adjusting mechanism of the planar member 3 by the tension adjusting means is the same as that of the second embodiment (in other words, the fourth embodiment is a modification of the second embodiment). . Two position restricting members 80 (a first position restricting member 801 and a second position restricting member 802) are fixed to the main frame 70. The position restricting member 80 is formed by bending, for example, a metal bar shape as shown in the figure. The position restricting member 80 includes a connecting portion 81 connected to the main frame 70 positioned on the upper side and the lower side thereof, and a restricting portion 82 that is a portion between the connecting portions 81. In a state where the connecting portion 81 is connected to the main frame 70, the restricting portion 82 is located behind the main frame. Specifically, the restricting portion 82 of the first position restricting member 801 and the restricting portion 82 of the second position restricting member 802 are positioned side by side in the width direction behind the main frame 70.

  The backboard 40 is fixed to the main frame 70. In this example, the peripheral portion of the backboard 40 protrudes forward, and the portion is located between the restriction portion 82 of the first position restriction member 801 and the restriction portion 82 of the second position restriction member 802. A groove for passing the hooking member 60 is formed in the portion of the backboard 40. The backboard 40 is formed with a hooking portion 41 similar to that in the first embodiment.

  When viewed from the relay member 50 side, the hooking member 60 passes behind the restricting portion 82 of the first restricting member located on the inner side in the width direction and forward of the restricting portion 82 of the second restricting member located on the outer side in the width direction therefrom. The U-turn is passed through to the rear of the backboard 40 and is hooked on one of the catch portions 41.

  If the hooking member 60 is hooked on the hooking portion 41 located on the outer side in the width direction than the hooking portion 41 hooked at that time, a predetermined portion of the planar member 3 (the hooking member in which the position of the hooking portion 41 to be hooked is changed) The tension at the height of 60 is reduced. On the other hand, if the hooking member 60 is hooked on the hooking portion 41 located on the inner side in the width direction than the hooking portion 41 hooked at that time, the predetermined portion of the planar member 3 (the position of the hooking portion 41 to be hooked is changed). The tension at the height of the hook member 60 is increased.

  In this example as well, as in the third example, a pad 90, which is a cushion material covering the main frame 70, is provided. The pad 90 is covered with a pad cover 91, and the pad cover 91 is connected to the relay member 50. The opposite end of the pad cover 91 connected to the relay member 30 is fixed to the main frame 70 via a fixing member 911. Specifically, a fitting groove 71 is formed in the main frame 70, and a fixing member 911 is fitted in the fitting groove 71. Thus, the planar member 3 and the pad cover 91 are connected to the relay member 50. Therefore, when the hooking portion 41 to which the hooking member 60 is hooked is changed, not only the planar member 3 but also the tension on the pad cover 91 is changed via the relay member 50, but the force via the relay member 50 is changed. Since at least a part of is transmitted to the planar member 3, the tension of the planar member 3 increases or decreases when the hooking portion 41 to be hooked is changed.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention.

  The vehicle seat 1 according to the embodiment (each example) is provided with a plurality of tension adjusting means along the vertical direction in order to adjust the tension of the planar member 3 in the horizontal direction (width direction). As described above, a configuration similar to the above may be provided as a configuration for adjusting the tension of the planar member 3 in the vertical direction. That is, it is good also as a structure which provided the several tension adjustment means along the left-right direction. In this case, a plurality of tension adjusting means arranged in the left-right direction only on the upper side of the frame 2 may be provided. Further, when a plurality of tension adjusting means arranged along the upper side and the lower side of the frame 2 are provided, a symmetrical plane that bisects up and down so that the balance of the tension of the planar member 3 can be made uniform. It is good to be provided symmetrically.

  And both the structure provided with the several tension adjustment means arranged in the up-down direction demonstrated in the said embodiment (each Example) and the structure where the several tension adjustment means were arranged along the left-right direction were applied. It may be a single vehicle seat.

  In the vehicle seat 1 according to the above-described embodiment (each example), the planar member 3 stretched over the frame 2 is connected to a plurality of tension adjusting means via the relay members 30, 50, etc. A structure in which the planar member 3 is directly connected to the tension adjusting means without using the relay members 30 and 50 and the like may be used.

  Although the said embodiment (each Example) demonstrated the seat back 1a provided with the tension | tensile_strength adjustment means of the planar member 3, the seat cushion (seat part) of the vehicle seat 1, a headrest, an armrest is the same structure. It is also possible to apply to the above. That is, the same technical idea can be applied to those that support the passenger.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 1a Seat back 2 Frame 3 Planar member 10 1st adjustment member 20 2nd adjustment member 30 Relay member 40 Backboard 41 Hook part 50 Relay member 60 Hook member

Claims (4)

Frame,
A planar member stretched over the frame;
Tension adjusting means for adjusting tension acting on a predetermined portion of the planar member;
With
The vehicle seat according to claim 1, wherein a plurality of the tension adjusting means are provided side by side in a predetermined direction along the frame.   2. The vehicle seat according to claim 1, wherein the tension adjusting means is provided symmetrically with respect to at least one of a plane that bisects the frame left and right and a symmetry plane that bisects the frame vertically.   The tension adjusting means adjusts the tension acting on the predetermined part of the planar member by changing the position of the part directly or indirectly connected to the predetermined part of the planar member. The vehicle seat according to claim 1, wherein the vehicle seat is a vehicle seat. The tension adjusting means is configured to determine a predetermined portion of the planar member depending on whether a portion directly or indirectly connected to the predetermined portion of the planar member is hooked on any of a plurality of hook portions provided at the rear of the seat. The vehicle seat according to claim 1 or 2, wherein a tension acting on the part is adjusted.

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