Operation strap and vehicle seat

Abstract

To hold an operation strap in an upright state at a shoulder portion of a seatback.SOLUTION: An operation strap 30 comprises a first strap 32 and a second strap 34. The first strap 32 has one end in a longitudinal direction that is connected to a lock device provided inside a seatback 14R of a vehicle seat, and the other end 32A in the longitudinal direction that is drawn out of the seatback 14R through a slit 28A formed at a shoulder portion of the seatback 14R. The second strap 34 is folded in two in a longitudinal direction 34C. Both ends 34A, 34B in the longitudinal direction of the second strap 34 are folded back toward the longitudinal direction 34C side and toward a side on which they approach each other, and are sewn to the other end 32A in the longitudinal direction of the first strap.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to an operating strap provided at the shoulder of a seat back. [Background technology]

[0002] The following Patent Document 1 discloses a band-shaped operating strap that is pulled out to the outside of the seat from a slit formed in the shoulder of the seat back. This operating strap has a pull-out portion that is pulled out from the slit, a grip portion that extends in a folded manner from the end of the pull-out portion and is sewn to close the pull-out portion into a ring, an extension portion that forms a seam at the end of the ring-sewn grip portion and extends in the opposite direction from the grip portion so that it overlaps with the pull-out portion in the pull-out direction, and a sewn portion that maintains at least a portion of the extension portion in a shape that is spaced apart from the pull-out portion in the thickness direction. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-118222 Summary of the Invention [Problem to be solved by the invention]

[0004] The operating strap prevents the grip from tipping forward by abutting the extension against the shoulder surface of the seat back, so the grip always points toward the rear of the seat. This makes it easier for the user to grasp and pull the grip from the rear of the seat back. Furthermore, if the seat back can be folded forward, the grip can be prevented from getting caught between the seat back and the seat cushion when the seat back is folded forward.

[0005] However, since the operating strap attached to the shoulder of the seat back can be operated not only from the rear side of the seat back but also from the front side of the seat back, there is room for improvement in terms of preventing deterioration of operability due to the gripping portion collapsing toward the rear side of the seat.

[0006] An object of the present invention is to provide an operating strap that can be held in an upright position at the shoulder of the seat back, and a vehicle seat equipped with the operating strap. [Means for solving the problem]

[0007] The first embodiment of the operating strap comprises a first strap having one longitudinal end connected to a locking device provided within the seat back of a vehicle seat and the other longitudinal end pulled out to the outside of the seat back through a hole formed in the shoulder of the seat back, and a second strap that is folded in half at the longitudinal center and has both longitudinal ends folded back toward the longitudinal center and close to each other and sewn to the other longitudinal end of the first strap.

[0008] In the first embodiment of the operating strap, one longitudinal end of the first strap is connected to a locking device provided in the seatback of the vehicle seat. The other longitudinal end of the first strap is pulled out of the seatback through a hole formed in the shoulder of the seatback. The second strap is folded in half at the longitudinal center. Both longitudinal ends of the second strap are folded back toward each other toward the longitudinal center and sewn to the other longitudinal end of the first strap. The folded-back portions of both longitudinal ends of the second strap contact the surface of the shoulder of the seatback, thereby holding the second strap in an upright position at the shoulder of the seatback.

[0009] The second aspect of the operating strap is the first aspect in which the first strap and the second strap are sewn together with the terminal of the other longitudinal end of the first strap and the terminals of both longitudinal ends of the second strap aligned.

[0010] In the second embodiment of the control strap, the first strap and the second strap are sewn together with the other longitudinal end of the first strap aligned with the longitudinal ends of the second strap, eliminating the need for a special structure (such as a V-notch) for positioning the first strap and the second strap when sewing them together, simplifying the structure.

[0011] The third aspect of the operating strap is the second aspect, in which the second strap has one longitudinal side portion and the other longitudinal side portion sewn together at a sewing portion provided between the longitudinal center portion and both longitudinal end portions.

[0012] In the third aspect of the operating strap, the second strap is folded in half at the longitudinal center and has both longitudinal ends folded back toward the longitudinal center, with one longitudinal side portion and the other longitudinal side portion sewn together at a sewn portion provided between the longitudinal center and both longitudinal ends. This allows the thickness of the folded second strap to be reduced, making it easier for the user to grip the second strap.

[0013] A fourth aspect of the vehicle seat includes a seat cushion on which an occupant sits, a seat back that supports the back of the occupant, and an operating strap of any one of the first to third aspects, in which one longitudinal end of the first strap is connected to a locking device provided within the seat back, and both longitudinal ends of the second strap are sewn to the other longitudinal end of the first strap that is pulled out to the outside of the seat back through a hole formed in the shoulder of the seat back.

[0014] In a vehicle seat of the fourth aspect, the back of an occupant seated on a seat cushion is supported by the seat back. One longitudinal end of a first strap of the operating strap is connected to a locking device provided in the seat back. Both longitudinal ends of a second strap of the operating strap are sewn to the other longitudinal end of the first strap, which is pulled out to the outside of the seat back through a hole formed in the shoulder of the seat back. This operating strap is one of the first to third aspects, and therefore provides the above-mentioned effects. [Effects of the Invention]

[0015] As described above, according to the present invention, the operating strap can be held in an upright state at the shoulder of the seat back. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a side view showing a vehicle seat according to an embodiment; [Figure 2] FIG. 2 is a perspective view showing a main part of the operating strap according to the embodiment. [Figure 3] FIG. 2 is a side view showing the main part of the operating strap. [Figure 4] FIG. 10 is a first side view showing the operating strap in a state during manufacturing. [Figure 5] FIG. 10 is a second side view showing the operating strap in a manufacturing process. DETAILED DESCRIPTION OF THE INVENTION

[0017] A vehicle seat 10 according to one embodiment of the present invention will be described below with reference to Figures 1 to 5. Note that in each figure, some reference numerals may be omitted to make the drawings easier to understand. Arrows FR, RH, and UP, which are appropriately depicted in each figure, respectively indicate the front, right, and top of the vehicle seat 10. Hereinafter, when the front-rear, left-right, top-bottom directions are used in the description, they will indicate directions relative to the vehicle seat 10.

[0018] As shown in Figure 1, the vehicle seat 10 is a split-folding rear seat for three passengers, and includes a seat cushion 12 on which passengers sit, a seatback 14 that supports the passengers' backs, and three headrests 16 that support the passengers' heads. The seatback 14 is divided into a right seatback 14R for two passengers and a left seatback 14L for one passenger. The right seatback 14R and the left seatback 14L are each connected to the floor of the vehicle body via hinge brackets (not shown) and can be folded forward onto the seat cushion 12.

[0019] The left and right seat backs 14 each include a back frame (not shown) which is a framework member, a back pad 20 which is a cushioning material, and a trim cover 22 which is a surface material. The back frame is made of, for example, a press-formed metal plate material or a metal pipe material, and is connected to the floor of the vehicle body via a hinge bracket (not shown).

[0020] The back pad 20 is made of a foam such as urethane foam and is attached to the back frame. The back pad 20 has a rectangular shape when viewed from the front-to-rear direction of the seat back 14, and is a generally rectangular plate with its thickness direction aligned with the front-to-rear direction of the seat back 14. The trim cover 22 is formed into a bag shape by sewing together multiple skin pieces made of, for example, cloth, leather, synthetic leather, etc., and is placed over the back pad 20 from above.

[0021] The left and right seatbacks 14R, 14L are each provided with a locking device 24 for restraining the left and right seatbacks 14R, 14L against the side of the vehicle body (not shown) in an upright position (the position shown in FIG. 1; hereinafter referred to as the "upright position"). Each locking device 24 has a locking body 26 provided on the outer side of the left and right seatbacks 14R, 14L in the lateral direction, and an operating strap 30 provided at the outer shoulder S of the left and right seatbacks 14R, 14L in the lateral direction. The locking body 26 has a latch (not shown) that engages with a striker (not shown) provided on the side of the vehicle body. This engagement restrains the left and right seatbacks 14R, 14L in the upright position.

[0022] The configurations of the left and right seat backs 14R, 14L around the locking device 24 are basically the same except that they are symmetrical, so the following will describe the configuration of the right seat back 14R, and will omit a description of the configuration of the left seat back 14L. Furthermore, when the following explanations are given using front-rear, left-right, up-down directions, they refer to directions when the seat back 14R is in the upright position.

[0023] As shown in Figures 2 and 3, the operating strap 30 attached to the shoulder S of the right seat back 14R includes a first strap 32 and a second strap 34. The arrows FR, LH, and UP shown in Figures 2 and 3 indicate the directions when the seat back 14R is in the upright position.

[0024] The first strap 32 and the second strap 34 are made of a long, flexible strip of material, such as synthetic fiber. Most of the first strap 32 is disposed within the seat back 14R. Although not shown in the drawings, one longitudinal end of the first strap 32 is connected to the lock body 26 via a link or the like.

[0025] The other longitudinal end 32A of the first strap 32 is inserted through a slit 28A in an escutcheon 28 (see FIGS. 1 and 3) provided at the shoulder S of the seat back 14R and is pulled out to the outside of the seat back 14R (to the upper side of the seat back 14R). The escutcheon 28 is formed, for example, from resin in a frame shape, and the slit 28A is formed as an elongated hole extending in the left-right direction. This slit 28A corresponds to the "hole" in this invention.

[0026] The other longitudinal end 32A of the first strap 32 inserted through the slit 28A is positioned with its thickness aligned in the front-to-rear direction. When the other longitudinal end 32A of the first strap 32 is pulled upward on the seat back 14R, the latch of the lock body 26 rotates, disengaging the latch from the striker on the side of the vehicle body. This allows the seat back 14R to be tilted forward. Both longitudinal ends 34A, 34B of the second strap 34 are sewn to the other longitudinal end 32A of the first strap 32.

[0027] The second strap 34 is disposed above the escutcheon 28 and outside the seat back 14R. The second strap 34 is disposed with its thickness in the front-to-rear direction and is folded in half in the longitudinal direction 34C. Both longitudinal end portions 34A, 34B of the second strap 34 are disposed side by side in the front-to-rear direction and are folded back toward each other on the longitudinal direction 34C side.

[0028] The other longitudinal end 32A of the first strap 32 is sandwiched between both longitudinal ends 34A, 34B of the second strap 34. A terminal 32A1 (reference numeral omitted in figures other than FIG. 3) of the other longitudinal end 32A of the first strap 32 and terminals 34A1, 34B1 (reference numeral omitted in figures other than FIG. 3) of both longitudinal ends 34A, 34B of the second strap 34 are aligned in the vertical direction.

[0029] Both longitudinal ends 34A, 34B of the second strap 34 and the other longitudinal end 32A of the first strap 32 are sewn together at sewn section T1. As a result, the second strap 34 is connected to the first strap 32 with the longitudinal end 34C positioned at the upper end and both longitudinal ends 34A, 34B positioned at the lower end.

[0030] Furthermore, second strap 34 has one longitudinal side portion 341 and the other longitudinal side portion 342 sewn together at sewn portion T2 provided between longitudinal end 34C and both longitudinal ends 34A, 34B. This sewn portion T2 is located closer to both longitudinal ends 34A, 34B (closer to the lower end) of second strap 34.

[0031] Folded-back portions 34A2, 34B2 (reference numerals omitted in figures other than FIG. 3) that are curved downward and convex when viewed from the left and right are formed at both longitudinal ends 34A, 34B of the second strap 34. These folded-back portions 34A2, 34B2 are in contact with the surface (upper surface) of the escutcheon 28. This allows the second strap 34 to be held upright at the shoulders S of the seat back 14R.

[0032] When the control strap 30 having the above configuration is manufactured, first, as shown in Fig. 4, the second strap 34 is inverted so that the longitudinal center portion 34C of the second strap 34 is curved convexly toward one longitudinal end of the first strap 32 (the lower side in Fig. 4), and sewn at sewn portion T1. At this time, the terminal 32A1 of the other longitudinal end 32A of the first strap 32 and the terminals 34A1, 34B1 of both longitudinal ends 34A, 34B of the second strap 34 are aligned. Thereafter, as shown in Fig. 5, the inversion of the second strap 34 is released, and one longitudinal side portion 341 and the other longitudinal side portion 342 of the second strap 34 are sewn at sewn portion T2 (see Figs. 2 and 3).

[0033] In the vehicle seat 10 configured as described above, the back of an occupant seated on the seat cushion 12 is supported by the seat back 14R. An operating strap 30 including a first strap 32 and a second strap 34 is provided at the shoulder S of the seat back 14R. One longitudinal end of the first strap 32 is connected to a locking device 24 provided within the seat back 14R. The other longitudinal end 32A of the first strap 32 is pulled out to the outside of the seat back 14R through a slit 28A of an escutcheon 28 provided at the shoulder S of the seat back 14R. Both longitudinal ends 34A, 34B of the second strap 34 are sewn to the other longitudinal end 32A of the first strap 32.

[0034] The second strap 34 is folded in half in the longitudinal direction 34C, with both longitudinal ends 34A, 34B folded toward each other in the longitudinal direction 34C. The folded-back portions 34A2, 34B2 of the both longitudinal ends 34A, 34B of the second strap 34 contact the surface of the escutcheon 28. This keeps the second strap 34 upright at the shoulders S of the seat back 14R, preventing the second strap 34 from collapsing toward the front or rear of the seat. As a result, the occupant (user) can easily grasp the operating strap 30 from either the front or rear side of the seat back 14R, improving the operability of the operating strap 30.

[0035] Moreover, in this control strap 30, the first strap 32 and the second strap 34 are sewn together with the terminal 32A1 of the other longitudinal end 32A of the first strap 32 aligned with the terminals 34A1, 34B1 of both longitudinal ends 34A, 34B of the second strap 34. Therefore, when sewing the first strap 32 and the second strap 34 together, no special structure (such as a V-notch) is required to position them, simplifying the structure.

[0036] Furthermore, in this operating strap 30, the second strap 34 is sewn together at a stitching portion T2 provided between the longitudinal direction 34C and both longitudinal ends 34A, 34B, at one longitudinal side portion 341 and the other longitudinal side portion 342. This allows the thickness of the folded second strap 34 to be reduced, making it easier for the occupant to grasp the second strap 34. Furthermore, when the occupant grasps the second strap 34, they can avoid touching the portion where the ends 32A1, 34A1, 34B1 are aligned, which prevents the occupant from feeling an unpleasant sensation to the user.

[0037] In the above embodiment, the longitudinal one side portion 341 and the longitudinal other side portion 342 of the second strap 34 are sewn together at the sewing portion T2, but this is not limited to this, and the sewing portion T2 may be omitted.

[0038] In addition, in the above embodiment, the terminal 32A1 of the other longitudinal end 32A of the first strap 32 and the terminals 34A1, 34B1 of both longitudinal ends 34A, 34B of the second strap 34 are aligned, but this is not limited to this, and the terminals 32A1, 34A1, 34B1 may be offset.

[0039] In addition, the present invention can be implemented with various modifications within the scope of the gist thereof. Furthermore, it goes without saying that the scope of the rights of the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0040] 10 Vehicle seats 12 seat cushions 14 Seat back 24 Locking device 30 Operation strap 32 First Strap 32A Other longitudinal end 32A1 terminal 34 Second Strap 34A, 34B both longitudinal ends 34A1, 34B1 terminals 34C longitudinal center 341 Longitudinal one side portion 342 Other longitudinal side portion S Shoulder

Claims

1. a first strap having one longitudinal end connected to a locking device provided in a seat back of the vehicle seat and having the other longitudinal end pulled out from a hole formed in a shoulder of the seat back to the outside of the seat back; a second strap that is folded in half at a center portion in the longitudinal direction, and both end portions in the longitudinal direction are folded back toward the center portion in the longitudinal direction and toward each other and sewn to the other end portion in the longitudinal direction of the first strap; Operation strap with.

2. 2. The operating strap according to claim 1, wherein the first strap and the second strap are sewn together with the terminal of the other longitudinal end of the first strap aligned with the terminals of both longitudinal ends of the second strap.

3. 3. The operating strap according to claim 1, wherein the second strap has one longitudinal side portion and the other longitudinal side portion sewn together at a stitching portion provided between the longitudinal center portion and both longitudinal ends.

4. A seat cushion on which an occupant sits; a seat back that supports the back of the occupant; an operating strap according to claim 1 or 2, wherein one longitudinal end of the first strap is connected to a locking device provided in the seat back, and both longitudinal ends of the second strap are sewn to the other longitudinal end of the first strap that is pulled out to the outside of the seat back through a hole formed in a shoulder of the seat back; A vehicle seat comprising:

Images