Vehicle seats

Abstract

To provide a vehicular seat configured so that a binding band for binding-up a cable in a seat back from moving up and down and workability during the binding-up can be improved.SOLUTION: A first wire 60 and a second wire 62 are hung between intermediate parts in a vertical direction of a seat back of left and right side part framework parts 40L and 40R. Cables 26 and 36 are arranged to extend from an upper part in a vertical direction of the seat back inside a seat back 14 toward a lower side of the seat back along a lower part in the vertical direction of the seat back of the side part framework part 40L on a left side of a seat. Further, the cables 26 and 36 are bound-up to the intermediate part in the vertical direction of the seat back of the side part framework part 40L on the left side of the seat, with a binding band 70, where the binding band 70 is arranged to pass between a left end part 60L of the first wire 60 and a left end part 62L of the second wire 62.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] The following Patent Document 1 discloses a structure in which a cable routed inside a seat back is fastened to a member inside the seat back by a binding band.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in such a structure, there is a possibility that the binding band moves up and down, and there is room for improvement in this regard.

[0005] On the other hand, as a configuration for suppressing the up and down movement of the binding band, for example, a hollow structure portion that penetrates vertically is formed in the side frame of the seat back, a cable is passed through the hollow structure portion, and a through hole that penetrates horizontally is formed in the hollow structure portion, and the cable is fastened to the side frame with a binding band passed through the through hole.

[0006] However, in this case, since the operator fastens the cable by passing the binding band through a portion inside the hollow structure portion that cannot be visually observed, there is room for improvement in terms of workability.

[0007] In consideration of the above facts, an object of the present invention is to obtain a vehicle seat capable of suppressing the up and down movement of a binding band for fastening a cable inside a seat back and improving the workability during fastening.

Means for Solving the Problems

[0008] The vehicle seat of the present invention as described in claim 1 comprises: left and right side frame parts arranged along the vertical direction of the seat back on both sides in the seat width direction of the seat back; a first wire stretched between the intermediate parts of the left and right side frame parts in the vertical direction of the seat back; a second wire stretched between the intermediate parts of the left and right side frame parts in the vertical direction of the seat back and spaced apart from the first wire on the lower side of the seat back; a cable extending from the upper side in the vertical direction of the seat back inside the seat back and routed toward the lower side of the seat back along the lower part of one of the left and right side frame parts in the vertical direction of the seat back; and a cable tie that fastens the cable to the intermediate part of the one side frame part in the vertical direction of the seat back and passes between one end of the first wire in the seat width direction and one end of the second wire in the seat width direction. The configuration includes at least one of the following: one end of the first wire in the seat width direction is bent downwards towards the seat back and inward in the seat width direction; and one end of the second wire in the seat width direction is bent upwards towards the seat back and inward in the seat width direction.

[0009] According to the above configuration, a first wire and a second wire are stretched between the left and right side frame sections in the middle of the seat back in the vertical direction, with the second wire positioned at a distance from the first wire towards the bottom of the seat back. The cable extends from the upper side of the seat back in the vertical direction inside the seat back and is routed along the lower part of one of the left and right side frame sections in the vertical direction toward the bottom of the seat back. Here, the cable is secured to the middle of the seat back in the vertical direction of the one side frame section by a cable tie, and the cable tie is attached to the first wire in the seat width direction. The cable tie is positioned to pass between one end of the first wire and one end of the second wire in the sheet width direction. Therefore, the displacement of the cable tie in the vertical direction of the sheet back is restricted by one end of each wire in the sheet width direction. In addition, when an operator uses the cable tie to secure the cable to one side frame, the operator can perform the securing work while visually checking the area to which they intend to secure the cable to the side frame. Furthermore, the system includes at least one of the following configurations: one end of the first wire in the seat width direction is bent downwards towards the seat back and inward in the seat width direction; and one end of the second wire in the seat width direction is bent upwards towards the seat back and inward in the seat width direction.

[0010] The vehicle seat of the present invention as described in claim 2 has the configuration described in claim 1, wherein one end of the first wire in the seat width direction is bent downwards towards the seat back and inwards in the seat width direction, and one end of the second wire in the seat width direction is bent upwards towards the seat back and inwards in the seat width direction.

[0011] According to the above configuration, for example, by adjusting the bending angle of one end of each of the first and second wires in the sheet width direction according to the width of the cable tie, it is possible to effectively restrict the displacement of the cable tie in the vertical direction of the sheet back while maintaining the vertical position of each bridging portion of the first and second wires at the sheet back. [Effects of the Invention]

[0012] As described above, the vehicle seat of the present invention has the excellent effect of being able to suppress the vertical movement of cable ties used to secure cables within the seat back and improving workability during securing. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing a vehicle seat according to one embodiment of the present invention. [Figure 2] Figure 1 is a perspective view showing the cable routed inside the seat back of a vehicle seat. [Figure 3] Figure 2 is a perspective view showing the seat back frame with the seat back pad placed over it, with the right half of the seat back pad removed. [Figure 4] This is a magnified perspective view showing the cables being secured to the side frame using cable ties, as seen from a diagonal frontal angle. [Figure 5] This is a perspective view showing the same situation as in Figure 4, but from an oblique rear view. [Modes for carrying out the invention]

[0014] A vehicle seat according to one embodiment of the present invention will be described with reference to Figures 1 to 5. In these figures, arrows FR indicate the front side of the vehicle seat, arrows UP indicate the upper side of the vehicle seat, and arrows LH indicate the left side when the vehicle seat is facing forward. Hereafter, when simply referring to the front / back, up / down, and left / right directions, unless otherwise specified, these refer to the front / back, up / down, and left / right sides of the vehicle seat, respectively. In addition, some reference numerals may be omitted in each figure for the sake of clarity.

[0015] (Configuration of the embodiment) Figure 1 shows a perspective view of a vehicle seat 10 according to this embodiment. The vehicle seat 10 comprises a seat cushion 12 that forms the seating area where the occupant sits and supports the occupant's buttocks and thighs, a seat back 14 that supports the occupant's back, and a headrest 16 that supports the occupant's head. As an example, the vehicle seat 10 in Figure 1 is installed as a rear seat in a multi-row seating area of ​​a vehicle.

[0016] Furthermore, the lower end of the seat back 14 is rotatably connected to the rear end of the seat cushion 12 via a reclining mechanism 20. Since a known configuration can be applied to the basic structure of the reclining mechanism 20, a detailed explanation is omitted. The reclining mechanism 20 has a reclining lever 24 connected to a cable 26 (see Figure 2) routed inside the seat back 14, located on the right shoulder portion 14A of the seat back 14. The reclining lever 24 is for occupant operation; when the reclining lever 24 is operated, the seat back 14 is released from its locked state, allowing it to recline (tilt).

[0017] In addition, the vehicle seat 10 has a seat slide mechanism 30 that slides the seat cushion 12 in the seat front-rear direction with respect to the vehicle body floor. Since a known configuration can be applied to the basic configuration of the seat slide mechanism 30, a detailed description thereof is omitted. The seat slide mechanism 30 includes a slide lever 34 connected to a cable 36 (see FIG. 2) arranged inside the seat back 14 at the left shoulder portion 14B of the seat back 14. The slide lever 34 is for passenger operation. When the slide lever 34 is operated, the slide lock state of the seat slide mechanism 30 is released, and the seat cushion 12 can slide in the seat front-rear direction.

[0018] FIG. 2 shows a part of the internal structure of the seat back 14 together with the headrest 16. As shown in FIG. 2, the seat back 14 has a seat back frame 40 that constitutes its skeleton portion. On the front side of the seat back frame 40, a seat back pad 50 shown in FIG. 3 is arranged. The seat back pad 50 is supported by the seat back frame 40. Further, the surface of the seat back pad 50 is covered by a skin 52 (see FIG. 1).

[0019] As shown in FIG. 2, the seat back frame 40 has an upper frame 42 that is substantially inverted U-shaped in a front view. The upper frame 42 is made of a pipe material and includes an upper portion 42A that constitutes the upper end portion of the seat back frame 40 and is arranged along the seat width direction, and a pair of left and right side portions 42L and 42R that hang down from both ends of the upper portion 42A in the seat width direction. An operation unit 22 including a reclining lever 24 is fixed to the right side portion of the upper portion 42A in the seat width direction. Further, an operation unit 32 including a slide lever 34 is fixed to the left side portion of the upper portion 42A in the seat width direction.

[0020] Further, the seat back frame 40 has a first side frame 44 joined to the side portion 42L on the left side of the seat (right side in the drawing) of the upper frame 42 from the outside in the seat width direction, and a second side frame 46 joined to the side portion 42R on the right side of the seat (left side in the drawing) of the upper frame 42 from the outside in the seat width direction. The first side frame 44 and the second side frame 46 arranged on both sides in the seat width direction of the seat back 14 are arranged along the vertical direction of the seat back, and include portions arranged outside the seat width direction of the upper frame 42, and are formed in a shape in which the front end side and the rear end side are bent inward in the seat width direction. The first side frame 44 is located at the middle and lower portions in the vertical direction of the seat back frame 40, and the second side frame 46 is located at the lower portion of the seat back frame 40.

[0021] In addition, in FIGS. 2, 4, and 5, in the first side frame 44, a front wall portion that constitutes the front end portion thereof and extends inward in the seat width direction is denoted by reference numeral 44A. Further, in FIG. 5, a side wall portion on the outside in the seat width direction of the first side frame 44 is denoted by reference numeral 44B, and a rear wall portion that constitutes the rear end portion of the first side frame 44 and extends inward in the seat width direction is denoted by reference numeral 44C.

[0022] A reinforcing member 48 is arranged inside the seat width direction at the lower portion of the first side frame 44 shown in FIG. 2. The reinforcing member 48 includes a part that is arranged opposite to a part of the lower portion of the first side frame 44 in the seat width direction, and is formed in a shape in which the front end side and the rear end side are bent outward in the seat width direction. The front wall portion 48A that constitutes the front end portion of the reinforcing member 48 is joined to the lower portion of the front wall portion 44A of the first side frame 44, and the rear wall portion (not shown) that constitutes the rear end portion of the reinforcing member 48 is joined to the lower portion of the rear wall portion 44C (see FIG. 5) of the first side frame 44.

[0023] In this embodiment, the left side frame portion 40L, which is arranged along the vertical direction of the seat back on the left side (one side) in the seat width direction of the seat back 14, is configured to include the left side portion 42L of the upper frame 42 described above, the first side frame 44, and the reinforcing member 48. On the other hand, the right side frame portion 40R, which is arranged along the vertical direction of the seat back on the right side (the other side) in the seat width direction of the seat back 14, is configured to include the right side portion 42R of the upper frame 42 described above and the second side frame 46.

[0024] A first wire 60 and a second wire 62 are stretched between the left and right side frame sections 40L and 40R of the seat back 14 in the vertical direction. The second wire 62 is positioned at a distance from the first wire 60 on the lower side of the seat back. The first wire 60 and the second wire 62 are fixed to the left and right side frame sections 40L and 40R by welding. As shown in Figure 3, the first wire 60 and the second wire 62 support the seat back pad 50 from the rear side. A backboard (not shown) is also positioned on the rear side relative to the first wire 60 and the second wire 62, and the first wire 60 and the second wire 62 support the backboard when the seat back 14 is tilted forward.

[0025] As shown in Figure 2, the left end 60L of the first wire 60, which is one end in the seat width direction, is bent downwards towards the seat back and inward in the seat width direction. Similarly, the left end 62L of the second wire 62, which is one end in the seat width direction, is bent upwards towards the seat back and inward in the seat width direction. As a result, the weld between the left end 60L of the first wire 60 and the left side frame part 40L, and the weld between the left end 62L of the second wire 62 and the left side frame part 40L are located close together.

[0026] As shown in an enlarged view in Figure 4, the left end 60L of the first wire 60 and the left end 62L of the second wire 62 are welded to the front wall portion 44A of the first side frame 44, which is part of the left side frame portion 40L, in this embodiment, and are positioned so as not to protrude from the front wall portion 44A when viewed from the front side of the sheet. Furthermore, the front wall portion 44A of the first side frame 44 includes an extension portion 44A1 that extends inward in the sheet width direction to widen the support range of the portion of the first wire 60 on the left end side of the sheet, and an extension portion 44A2 that extends inward in the sheet width direction to widen the support range of the portion of the second wire 62 on the left end side of the sheet.

[0027] Furthermore, the vertical position of the seat back where the left end 60L of the first wire 60 and the left end 62L of the second wire 62 are welded is the vertical position of the seat back where both the first side frame 44 and the left side portion 42L of the upper frame 42 of the seat exist in the left side frame portion 40L, and corresponds to the part of the left side frame portion 40L that has high support rigidity.

[0028] On the other hand, as shown in Figure 2, the cable 26 for the reclining mechanism and the cable 36 for the seat slide mechanism extend from the upper side of the seat back in the vertical direction inside the seat back 14 and are routed downwards towards the seat back along the lower part of the left side frame part 40L of the seat (one of the left side frame parts 40L, 40R).

[0029] The cable 26 for the reclining mechanism hangs down from the upper right end inside the seat back 14 and is secured to the right end of the first wire 60 by a cable tie 68. From this point of attachment, it extends to the left side of the seat and is secured to the left side frame 40L by a cable tie 70, extending downwards towards the seat back. The cable 36 for the seat sliding mechanism hangs down from the upper left end inside the seat back 14 and is secured to the left side frame 40L by a cable tie 70, extending downwards towards the seat back.

[0030] Figure 5 shows a perspective view from the diagonal rear side of the same state as in Figure 4. As shown in Figures 4 and 5, the cable tie 70 comprises a strip-shaped band portion 72 and a fastening portion 74 (simplified in the figures) through which the band portion 72 can be inserted. The fastening portion 74 is designed to fasten the band portion 72 when it is inserted through it. As a known configuration of the cable tie 70, such as that referred to as a tie wrap (registered trademark), can be applied, a detailed explanation is omitted.

[0031] The cable tie 70 secures the cables 26 and 36 to the middle of the left side frame portion 40L on the left side of the seat, in the vertical direction of the seat back, and is positioned to pass between the left end 60L, which is one end of the first wire 60 in the seat width direction, and the left end 62L, which is one end of the second wire 62 in the seat width direction. In this embodiment, as an example, the band portion 72 is positioned between the left end 60L of the first wire 60 and the left end 62L of the second wire 62. The thickness of the band portion 72 is smaller than the diameters of the first wire 60 and the second wire 62. Also, as an example, the fastening portion 74 is positioned inward in the seat width direction from the left end 60L of the first wire 60 and the left end 62L of the second wire 62, and forward of the seats from the cables 26 and 36.

[0032] Note that the routing of cables 26 and 36 shown in Figure 2 is performed before the seat back pad 50 (see Figure 3) is placed on the front side of the seat back frame 40. Cable 26 is routed after being fixed to the reclining lever 24, and cable 36 is routed after being fixed to the slide lever 34.

[0033] (Effects and mechanisms of the embodiment) Next, the operation and effects of this embodiment will be described.

[0034] In this embodiment, as shown in Figure 2, the cables 26 and 36 are secured to the middle of the seat back in the vertical direction of the left side frame 40L of the seat by a cable tie 70, and the cable tie 70 is positioned to pass between the left end 60L of the first wire 60 and the left end 62L of the second wire 62. Therefore, the displacement of the cable tie 70 in the vertical direction of the seat back is restricted by the left end 60L of the first wire 60 and the left end 62L of the second wire 62. By fixing the cables 26 and 36 to the side frame 40L with such a cable tie 70, the generation of abnormal noise caused by vibration of the cables 26 and 36 can be suppressed.

[0035] Furthermore, when a worker uses the cable ties 70 to fasten the cables 26 and 36 to the side frame 40L, the worker can perform the fastening work while visually confirming the area in which they intend to fasten the cables 26 and 36 to the side frame 40L. In addition, since the cable ties 70 are positioned to pass between the left end 60L of the first wire 60 and the left end 62L of the second wire 62, it is possible to prevent variations in the position of the cable ties 70 in the vertical direction of the seat back depending on the worker.

[0036] Furthermore, in this embodiment, as shown in Figure 4, the left end 60L of the first wire 60 is bent downwards towards the seat back and inward in the seat width direction, and the left end 62L of the second wire 62 is bent upwards towards the seat back and inward in the seat width direction. Therefore, by adjusting the bending angles of the left end 60L of the first wire 60 and the left end 62L of the second wire 62 according to the width of the cable tie 70, for example, it is possible to effectively restrict the vertical displacement of the cable tie 70 on the seat back while maintaining the vertical position of the cable tie 70 at each connecting portion of the first wire 60 and the second wire 62 on the seat back.

[0037] As described above, the vehicle seat 10 of this embodiment (see Figure 1) makes it possible to suppress the vertical movement of the cable ties 70 that secure the cables 26 and 36 within the seat back 14 shown in Figure 2, and also improves the workability when securing the cables.

[0038] (Supplementary explanation of the embodiment) In the embodiments shown in Figures 1 to 5, there are two cables 26 and 36 routed inside the seat back 14, but there may be one cable or three or more cables routed inside the seat back (14).

[0039] In addition to the configuration of the above embodiment, the cable 26 for the reclining mechanism may be attached to the right-side end of the first wire 60 with a cable tie. With this configuration, the bending radius of the cable 26 at the left-side bend of the seat can be adjusted effectively.

[0040] Furthermore, in the above embodiment, as an example, the fastening portion 74 of the cable tie 70 shown in Figures 4 and 5 is positioned inward in the sheet width direction from the left end 60L of the first wire 60 and the left end 62L of the second wire 62, and in front of the sheet from the cables 26 and 36. However, as a modification of the above embodiment, the fastening portion (74) of the cable tie (70) may be positioned, for example, on the rear side of the sheet from the cables (26, 36) and in front of the sheet from the rear wall portion (44C) of the first side frame (44), or it may be positioned between the left end (60L) of the first wire (60) and the left end (62L) of the second wire (62).

[0041] Furthermore, in the above embodiment, as shown in Figure 5, the cables 26 and 36 are secured together by a cable tie 70 with the cable 26 for the reclining mechanism positioned on the rear side of the seat relative to the cable 36 for the seat sliding mechanism. However, it goes without saying that the front-to-back relationship of the cables 26 and 36 may be reversed from that of the above embodiment.

[0042] Furthermore, in the above embodiment, as shown in Figure 4, the left end 60L of the first wire 60, which is one end in the seat width direction, is bent downwards towards the seat back and inward in the seat width direction. While such a configuration is preferred, a configuration without this configuration is also possible. Furthermore, in the above embodiment, the left end 62L of the second wire 62, which is one end in the seat width direction, is bent upwards towards the seat back and inward in the seat width direction. While such a configuration is preferred, a configuration without this configuration is also possible.

[0043] Furthermore, in the above embodiment, the left end 60L of the first wire 60 and the left end 62L of the second wire 62 are bent in a V-shape. However, as a modification of the above embodiment, the left end (60L) of the first wire (60) and the left end (62L) of the second wire (62) may be bent in a U-shape. In such a modification, the portions of the first wire (60) and the second wire (62) that restrict the vertical movement of the cable tie (70) can be extended in the sheet width direction.

[0044] Furthermore, the above embodiments and the various modifications described above can be combined as appropriate.

[0045] Although an example of the present invention has been described above, the present invention is not limited to the above, and it is of course possible to implement it in various ways without departing from its spirit. [Explanation of symbols]

[0046] 10 Vehicle seats 14 Seatback 26 Cables 36 Cables 40L Side frame (One side of the skeletal structure) 40R Side skeletal section 60 First Wire 60L The left end of the first wire (one end of the first wire in the sheet width direction) 62 Second wire 62L The left end of the second wire (one end of the second wire in the sheet width direction) 70 Cable ties

Claims

1. The left and right side frame parts are positioned along the vertical direction of the seat back, on both sides in the seat width direction of the seat back, A first wire is stretched between the upper and lower intermediate portions of the left and right side frame sections of the seat back, A second wire is stretched between the intermediate portions of the left and right side frame sections of the seat back in the vertical direction, and is positioned at a distance from the first wire on the lower side of the seat back. A cable extending from the upper side in the vertical direction of the seat back inside the seat back and routed along the lower part of one of the left and right side frame parts in the vertical direction of the seat back toward the downward side of the seat back, The cable is attached to the middle of the seat back in the vertical direction of one of the side frame parts, and a cable tie is positioned to pass between one end of the first wire in the seat width direction and one end of the second wire in the seat width direction. Equipped with, A vehicle seat comprising at least one of the following configurations: one end of the first wire in the seat width direction is bent downwards towards the seat back and inward in the seat width direction; and one end of the second wire in the seat width direction is bent upwards towards the seat back and inward in the seat width direction.

2. One end of the first wire in the seat width direction is bent downwards towards the seat back and inwards in the seat width direction. The vehicle seat according to claim 1, wherein one end of the second wire in the seat width direction is bent upward towards the seat back and inward in the seat width direction.

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