JP2024134912A - Vehicle seat - Google Patents

Abstract

[Problem] To obtain a vehicle seat capable of suppressing the vertical movement of a cable tie for fastening a cable inside a seat back and improving workability during fastening. [Solution] A first wire 60 and a second wire 62 are stretched between the middle parts of the left and right side skeletons 40L, 40R in the vertical direction of the seat back. The cables 26, 36 are arranged so as to extend from the upper side in the vertical direction of the seat back inside the seat back 14 and to run along the lower part in the vertical direction of the side skeleton 40L on the left side of the seat toward the lower side of the seat back. In addition, the cables 26, 36 are fastened to the middle part in the vertical direction of the side skeleton 40L on the left side of the seat back by a cable tie 70, and the cable tie 70 is arranged to pass between the left end 60L of the first wire 60 and the left end 62L of the second wire 62. [Selected Figure] Fig. 2

Description

The present invention relates to a vehicle seat.

The following Patent Document 1 discloses a structure in which a cable routed inside a seat back is tied to a member inside the seat back with a cable tie.

JP 2009-247428 A

However, with this type of structure, there is a risk that the cable tie may move up and down, and there is room for improvement in this regard.

On the other hand, as a configuration for suppressing the vertical movement of the cable tie, for example, a hollow structure that connects vertically to the side frame of the seat back may be formed, a cable may be passed through the hollow structure, and a through hole may be formed that connects laterally to the hollow structure, and the cable may be fastened to the side frame with a cable tie that has been passed through the through hole.

However, in this case, workers must use cable ties to fasten cables to invisible parts of the hollow structure, leaving room for improvement in terms of workability.

In consideration of the above, the present invention aims to provide a vehicle seat that can suppress the vertical movement of the cable tie that fastens the cable inside the seat back and improves workability when fastening the cable.

The vehicle seat of the present invention described in claim 1 includes left and right side skeletons arranged along the vertical direction of the seat back on both sides of the seat back in the seat width direction, a first wire stretched between the middle parts of the left and right side skeletons in the vertical direction of the seat back, a second wire stretched between the middle parts of the left and right side skeletons in the vertical direction of the seat back and arranged at a distance from the first wire on the lower side of the seat back, a cable extending from the upper side of the seat back in the vertical direction inside the seat back and arranged to run toward the lower side of the seat back along the lower part of the seat back in the vertical direction of one of the left and right side skeletons, and a cable tie that fastens the cable to the middle part of the one side skeleton in the vertical direction of the seat back and is arranged 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.

According to the above configuration, the first wire and the second wire are stretched between the middle parts of the left and right side skeletons in the vertical direction of the seat back, and the second wire is arranged at a distance from the first wire on the lower side of the seat back. The cable is extended from the upper side of the seat back in the vertical direction inside the seat back and arranged to run along the lower part of one of the left and right side skeletons in the vertical direction of the seat back toward the lower side of the seat back. Here, the cable is tied to the middle part of the one side skeleton in the vertical direction of the seat back by a cable tie, and the cable tie is arranged 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. Therefore, the cable tie is restricted from displacing in the vertical direction of the seat back by one end of the first wire and one end of the second wire in the seat width direction. In addition, when an operator uses a cable tie to tie a cable to one side skeleton, the operator can perform the tying work while visually checking the range in which the cable is to be tied to one side skeleton.

The vehicle seat of the present invention described in claim 2 is configured as described in claim 1, in which one end of the first wire in the seat width direction is bent toward the lower side of the seat back and inward in the seat width direction, and one end of the second wire in the seat width direction is bent toward the upper side of the seat back and inward in the seat width direction.

According to the above configuration, for example, by adjusting the bending angle of one end of each of the first wire and the second wire in the seat 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 seat back while maintaining the vertical position of the seat back at each of the bridge portions of the first wire and the second wire.

As described above, the vehicle seat of the present invention has the excellent effect of suppressing the vertical movement of the cable tie that fastens the cable inside the seat back and improving the workability when fastening the cable.

1 is a perspective view showing a vehicle seat according to an embodiment of the present invention; 2 is a perspective view showing a state in which a cable is routed within a seat back of the vehicle seat of FIG. 1 . FIG. 3 is a perspective view showing a state in which a seat back pad is placed on the seat back frame of FIG. 2, with the seat back pad shown in a state in which the right half of the seat is cut away. 13 is an enlarged perspective view showing a state in which a cable is tied to a side skeletal portion by a cable tie, as viewed obliquely from the front side. FIG. FIG. 5 is a perspective view showing the same state as in FIG. 4 as seen obliquely from the rear side.

A vehicle seat according to one embodiment of the present invention will be described with reference to Figures 1 to 5. Note that the arrow FR, as appropriate, shown in these figures indicates the front side of the vehicle seat, the arrow UP indicates the upper side of the vehicle seat, and the arrow LH indicates the left side when facing forward of the vehicle seat. Hereinafter, when the directions of front/rear, up/down, and left/right are simply used, they refer to the front/rear of the vehicle seat, the up/down of the vehicle seat, and the left/right when facing forward of the vehicle seat, unless otherwise specified. Also, in each figure, some symbols may be omitted in order to make the drawings easier to read.

(Configuration of the embodiment)
Fig. 1 shows a perspective view of a vehicle seat 10 according to this embodiment. The vehicle seat 10 includes a seat cushion 12 that constitutes a seating portion on which an occupant sits and supports the buttocks and thighs of the seated occupant, a seat back 14 that supports the back of the seated occupant, and a headrest 16 that supports the head of the seated occupant. The vehicle seat 10 in Fig. 1 is installed as a rear row seat among multiple rows of seats in a vehicle cabin, as an example.

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. A detailed description of the basic configuration of the reclining mechanism 20 will be omitted since a known configuration can be applied. The reclining mechanism 20 is provided with a reclining lever 24 connected to a cable 26 (see FIG. 2) routed inside the seat back 14, at the right shoulder portion 14A of the seat back 14. The reclining lever 24 is operated by the occupant, and by operating the reclining lever 24, the locked state of the seat back 14 is released, allowing the seat back 14 to be reclined (tilted).

The vehicle seat 10 also has a seat slide mechanism 30 that slides the seat cushion 12 in the front-rear direction relative to the vehicle body floor. A detailed description of the basic configuration of the seat slide mechanism 30 will be omitted since a known configuration can be applied. The seat slide mechanism 30 has 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 operated by the occupant, and by operating the slide lever 34, the slide lock state of the seat slide mechanism 30 is released, allowing the seat cushion 12 to slide in the front-rear direction.

Figure 2 shows part of the internal structure of the seat back 14 together with the headrest 16. As shown in Figure 2, the seat back 14 has a seat back frame 40 that forms the skeleton of the seat back 14. A seat back pad 50 shown in Figure 3 is disposed on the front side of the seat back frame 40. The seat back pad 50 is supported by the seat back frame 40. The surface of the seat back pad 50 is covered with a skin 52 (see Figure 1).

As shown in FIG. 2, the seatback frame 40 has an upper frame 42 that is substantially inverted U-shaped when viewed from the front. The upper frame 42 is made of pipe material and includes an upper portion 42A that constitutes the upper end of the seatback frame 40 and is arranged along the seat width direction, and a pair of left and right side portions 42L, 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 of the upper portion 42A in the seat width direction. In addition, an operation unit 32 including a slide lever 34 is fixed to the left side of the upper portion 42A in the seat width direction.

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

2, 4, and 5, the front wall portion of the first side frame 44 that forms the front end portion thereof and extends inward in the seat width direction is designated by the reference symbol 44A. In addition, in FIG. 5, the side wall portion of the first side frame 44 on the outer side in the seat width direction is designated by the reference symbol 44B, and the rear wall portion of the first side frame 44 that forms the rear end portion thereof and extends inward in the seat width direction is designated by the reference symbol 44C.

A reinforcing member 48 is disposed on the inside in the seat width direction of the lower part of the first side frame 44 shown in FIG. 2. The reinforcing member 48 has a portion disposed opposite a part of the lower part 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 constituting the front end part of the reinforcing member 48 is joined to the lower part of the front wall portion 44A of the first side frame 44, and the rear wall portion (not shown) constituting the rear end part of the reinforcing member 48 is joined to the lower part of the rear wall portion 44C (see FIG. 5) of the first side frame 44.

In this embodiment, the left side skeleton 40L arranged along the seat back vertical direction on the left side (one side) of the seat width direction of the seat back 14 is configured with the seat left side portion 42L of the upper frame 42 described above, the first side frame 44, and the reinforcing member 48. Also, the right side skeleton 40R arranged along the seat back vertical direction on the right side (the other side) of the seat width direction of the seat back 14 is configured with the seat right side portion 42R of the upper frame 42 described above and the second side frame 46.

A first wire 60 and a second wire 62 are stretched between the middle parts of the left and right side skeletons 40L, 40R of the seat back 14 in the vertical direction of the seat back. The second wire 62 is disposed on the lower side of the seat back with a gap from the first wire 60. The first wire 60 and the second wire 62 are fixed to the left and right side skeletons 40L, 40R by welding. As shown in FIG. 3, the first wire 60 and the second wire 62 support the seat back pad 50 from the rear side. In addition, a backboard (not shown) is disposed on the rear side of 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.

2, the left end 60L, which is one end of the first wire 60 in the seat width direction, is bent downward toward the seat back and inward in the seat width direction. Also, the left end 62L, which is one end of the second wire 62 in the seat width direction, is bent upward toward the seat back and inward in the seat width direction. As a result, the welded portion between the left end 60L of the first wire 60 and the left side skeleton portion 40L and the welded portion between the left end 62L of the second wire 62 and the left side skeleton portion 40L are positioned close to each other.

As shown enlarged in FIG. 4, in this embodiment, 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 44A of the first side frame 44 of the left side skeleton 40L, and are positioned so as not to protrude from the front wall 44A when viewed from the front side of the seat. In addition, the front wall 44A of the first side frame 44 has an extension 44A1 that extends inward in the seat width direction to widen the support range of the first wire 60 on the left end side of the seat, and an extension 44A2 that extends inward in the seat width direction to widen the support range of the second wire 62 on the left end side of the seat.

The seatback vertical position to which the left end 60L of the first wire 60 and the left end 62L of the second wire 62 are welded is the seatback vertical position in the left side skeleton 40L where both the first side frame 44 and the seat left side portion 42L of the upper frame 42 are present, and corresponds to a portion of the left side skeleton 40L with high support rigidity.

On the other hand, as shown in FIG. 2, the cable 26 for the reclining mechanism and the cable 36 for the seat sliding mechanism extend from the upper side of the seat back in the vertical direction inside the seat back 14 and are arranged to run along the lower part of the left side skeleton 40L (one of the left and right side skeletons 40L, 40R) in the vertical direction of the seat back toward the lower side of the seat back.

The cable 26 for the reclining mechanism hangs down from the upper right end inside the seat back 14 and is tied to the end of the first wire 60 on the right side of the seat with a cable tie 68, and extends from the tied part to the left side of the seat and is tied to the left side skeleton 40L with a cable tie 70 and extends to the lower side of 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 tied to the left side skeleton 40L with a cable tie 70 and extends to the lower side of the seat back.

Figure 5 shows a perspective view of the same state as in Figure 4, but seen from the diagonal rear side. As shown in Figures 4 and 5, the cable tie 70 comprises a belt-shaped band portion 72 and a fastening portion 74 (shown in a simplified form in the figures) through which the band portion 72 can be inserted. The fastening portion 74 is capable of fastening the band portion 72 when the band portion 72 is inserted. The structure of the cable tie 70 can be a known structure such as a tie wrap (registered trademark), and therefore a detailed description will be omitted.

The cable tie 70 is arranged to fasten the cables 26, 36 to the middle part of the seat back vertical direction of the side skeleton part 40L on the left side of the seat, and passes between the left end part 60L, which is one end of the first wire 60 in the seat width direction, and the left end part 62L, which is one end of the second wire 62 in the seat width direction. In this embodiment, as an example, the band part 72 is arranged between the left end part 60L of the first wire 60 and the left end part 62L of the second wire 62. The thickness of the band part 72 is smaller than the diameters of the first wire 60 and the second wire 62. Also, as an example, the fastening part 74 is arranged on the inner side in the seat width direction of the left end part 60L of the first wire 60 and the left end part 62L of the second wire 62, and on the front side of the seat of the cables 26, 36.

The cables 26 and 36 shown in FIG. 2 are routed before the seat back pad 50 (see FIG. 3) is placed on the front side of the seat back frame 40. The cable 26 is routed after being fixed to the reclining lever 24, and the cable 36 is routed after being fixed to the slide lever 34.

(Actions and Effects of the Embodiments)
Next, the operation and effects of this embodiment will be described.

In this embodiment, as shown in FIG. 2, the cables 26, 36 are tied to the middle of the side skeleton 40L on the left side of the seat in the vertical direction of the seat back by a cable tie 70, and the cable tie 70 is arranged to pass between the left end 60L of the first wire 60 and the left end 62L of the second wire 62. Therefore, the cable tie 70 is restricted from displacing in the vertical direction of the seat back 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, 36 to the side skeleton 40L by such a cable tie 70, the generation of abnormal noise caused by vibration of the cables 26, 36 can be suppressed.

In addition, when a worker uses the cable tie 70 to tie the cables 26, 36 to the side skeleton 40L, the worker can perform the tying work while visually checking the area where the cables 26, 36 are to be tied to the side skeleton 40L. Furthermore, since the cable tie 70 is arranged in a position that passes 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 the position of the cable tie 70 from varying in the vertical direction of the seat back depending on the worker.

In addition, in this embodiment, as shown in FIG. 4, the left end 60L of the first wire 60 is bent downward and inward in the seat width direction, and the left end 62L of the second wire 62 is bent upward and inward in the seat width direction. Therefore, for example, 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, it is possible to effectively restrict the displacement of the cable tie 70 in the vertical direction of the seat back while maintaining the vertical position of the seat back at the bridge portions of the first wire 60 and the second wire 62.

As described above, the vehicle seat 10 of this embodiment (see FIG. 1) can suppress the vertical movement of the cable tie 70 that fastens the cables 26, 36 inside the seat back 14 shown in FIG. 2, and can improve workability when fastening the cables.

(Supplementary explanation of the embodiment)
In the above embodiment shown in Figures 1 to 5, two cables 26, 36 are arranged inside the seat back 14, but the number of cables arranged inside the seat back (14) may be one or three or more.

In addition to the configuration of the above embodiment, the cable 26 for the reclining mechanism may be tied to the end of the first wire 60 on the right side of the seat with a cable tie. By adopting such a configuration, the bending radius of the bent portion of the cable 26 on the left side of the seat can be adjusted well.

In the above embodiment, as an example, the fastening portion 74 of the cable tie 70 shown in Figs. 4 and 5 is disposed inside the left end portion 60L of the first wire 60 and the left end portion 62L of the second wire 62 in the seat width direction and in front of the cables 26, 36. However, as a modification of the above embodiment, the fastening portion (74) of the cable tie (70) may be disposed, for example, on the rear side of the seat relative to the cables (26, 36) and in front of the seat relative to the rear wall portion (44C) of the first side frame (44), or may be disposed between the left end portion (60L) of the first wire (60) and the left end portion (62L) of the second wire (62).

In addition, in the above embodiment, as shown in FIG. 5, the cables 26, 36 are tied together by a cable tie 70 with the cable 26 for the reclining mechanism positioned toward the rear of the seat relative to the cable 36 for the seat sliding mechanism, but it goes without saying that the front-to-back relationship of the cables 26, 36 may be reversed from that in the above embodiment.

In the above embodiment, as shown in FIG. 4, the left end 60L, which is one end of the first wire 60 in the seat width direction, is bent toward the lower side of the seat back and inward in the seat width direction, and although such a configuration is preferable, a configuration that does not include such a configuration is also possible. In the above embodiment, the left end 62L, which is one end of the second wire 62 in the seat width direction, is bent toward the upper side of the seat back and inward in the seat width direction, and although such a configuration is preferable, a configuration that does not include such a configuration is also possible.

In addition, 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 into 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 into a U shape. In such a modification, it is possible to extend the portions of the first wire (60) and the second wire (62) that regulate the vertical movement of the cable tie (70) in the sheet width direction.

The above embodiment and the various modifications described above can be implemented in any suitable combination.

The above describes one example of the present invention, but the present invention is not limited to the above, and can of course be modified in various ways without departing from the spirit of the invention.

REFERENCE SIGNS LIST 10 Vehicle seat 14 Seat back 26 Cable 36 Cable 40L Side skeleton 40R Side skeleton (one side skeleton)
60 First wire 60L Left end of first wire (one end of the first wire in the sheet width direction)
62 Second wire 62L Left end of second wire (one end of the second wire in the sheet width direction)
70 Cable tie

Claims (2)

Left and right side frameworks are arranged on both sides of the seat back in a seat width direction along a seat back up-down direction;
A first wire is stretched between intermediate portions of the left and right side frameworks in the up-down direction of the seat back;
A second wire is disposed between intermediate portions of the left and right side frame portions in the up-down direction of the seat back and is disposed on a lower side of the seat back with a gap therebetween with respect to the first wire;
a cable extending from an upper side in the seat back vertical direction inside the seat back and arranged along a lower part in the seat back vertical direction of one of the left and right side skeleton parts toward a lower side of the seat back;
a cable tie that fastens the cable to a middle portion of the one side skeleton portion in the up-down direction of the seat back and is arranged 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;
A vehicle seat comprising: One end portion of the first wire in the seat width direction is bent toward a lower side of the seat back and toward an inner side in the seat width direction,
The vehicle seat according to claim 1 , wherein one end portion of the second wire in the seat width direction is bent toward an upper side of the seat back and inward in the seat width direction.