Vehicle seat

Abstract

To perform angle adjustment of a seat back and forward tilting of the seat back by operation of one operation member.SOLUTION: In a vehicle seat 10, when a reclining lever 30 is operated in one direction, a first member 46 slides with respect to a case 44 of a control box 42, and slide regulation of a striker by a slide lock 28 is released. As a result, the striker engaged with the seat lock 20 of the seat back can slide with respect to the side portion of the vehicle body, and the angle of the seat back can be adjusted. When the reclining lever 30 is further operated in one direction, the second member 54 slides together with the first member 46, and the engagement between the seat lock 20 and the striker is released. Thus, the seat back can be folded forward.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] The vehicle seat disclosed in Patent Document 1 below includes an inverting mechanism for moving the seat cushion, a rotation mechanism for rotating the seat back, a cushion lock for preventing the seat cushion from moving, a back lock for preventing the seat back from rotating, a cushion operation strap for unlocking the cushion lock, a back operation lever for unlocking the back lock, a relay unit for adjusting the timing for unlocking the cushion lock and the timing for unlocking the back lock, and a luggage compartment lever for operating the relay unit.

[0003] The vehicle seat reclining device disclosed in Patent Document 2 below includes a rail fixed to the vehicle body, a slider slidable relative to the rail, a striker attached to the slider that engages with a locking device attached to the seat back, and a latch mechanism that is provided between the rail and the slider and restricts the sliding of the slider. When the latch mechanism releases the restriction on the sliding of the slider, the reclining angle of the seat back can be adjusted. When the locking device is released from the striker, the seat back can be tilted forward. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-35060 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-154601 Summary of the Invention [Problem to be solved by the invention]

[0005] In the vehicle seat disclosed in Patent Document 1, the cushion lock mechanism and the back lock mechanism can be unlocked sequentially by operating the luggage compartment lever. Meanwhile, in the vehicle seat reclining device disclosed in Patent Document 2, an operating lever for adjusting the angle of the seat back and an operating lever for tilting the seat back forward are provided separately. There is a demand for combining these separate operating levers (operating members) into one.

[0006] An object of the present invention is to provide a vehicle seat in which the angle of the seat back can be adjusted and the seat back can be tilted forward by operating a single operating member. [Means for solving the problem]

[0007] A first aspect of the vehicle seat includes a seat back that can be tilted forward and backward relative to the vehicle body, a seat lock provided on the seat back, a striker that is slidably attached to the side of the vehicle body along the tilting direction and a slide lock that restricts the sliding, and a movable striker that restrains the seat back to the side when the striker engages with the seat lock, an operating member that can be operated in one direction, and a control box that has a first member and a second member slidably supported on a case, the operating member and the slide lock are each connected to the first member via a cable, and the seat lock is connected to the second member via a cable, and when the operating member is operated in the one direction, the first member slides relative to the case, the restriction by the slide lock is released, and the angle of the seat back can be adjusted, and when the operating member is further operated in the one direction, the second member slides together with the first member, the engagement between the seat lock and the striker is released, and the seat back can be tilted forward.

[0008] According to a first aspect of the vehicle seat, a seat back that can tilt forward and backward relative to the vehicle body is provided with a seat lock. The movable striker has a striker that is attached to the side of the vehicle body so as to be slidable along the tilting direction, and a slide lock that restricts the sliding of the striker. The striker engages with the seat lock, thereby restraining the seat back from the side of the vehicle body. An operating member that can be operated in one direction and the striker are each connected via cables to a first member of a control box, and the seat lock is connected via a cable to a second member of the control box.

[0009] When the operating member is operated in one direction, the first member slides relative to the case of the control box, releasing the slide restriction imposed by the slide lock. This allows the striker, which is engaged with the seat lock of the seat back, to slide relative to the side of the vehicle body, allowing the angle of the seat back to be adjusted. Furthermore, when the operating member is operated further in one direction, the second member slides together with the first member, releasing the engagement between the seat lock and the striker. This allows the seat back to be tilted forward. Thus, according to this aspect, the angle of the seat back can be adjusted and the seat back can be tilted forward by operating a single operating member.

[0010] The vehicle seat of the second aspect is the same as that of the first aspect, and is provided with a remote control member that is provided in the luggage compartment of the vehicle and connected to the second member via a cable, and when the remote control member is operated, the second member slides relative to the case, disengaging the seat lock from the striker.

[0011] According to the second aspect of the vehicle seat, a remote control member provided in the trunk of the vehicle is connected to the second member of the control box via a cable. When the remote control member is operated, the second member slides relative to the case, disengaging the seat lock from the striker. This allows the seat back to be folded forward from the trunk side.

[0012] In the vehicle seat of the third aspect, in the first or second aspect, when the operating member is further operated in the one direction and the second member slides together with the first member, a convex portion formed on one of the first member and the second member abuts against an abutment surface provided on the other of the first member and the second member, thereby increasing the sliding resistance of the first member and the second member against the case.

[0013] According to the vehicle seat of the third aspect, when the operating member is further operated in the one direction and the second member slides together with the first member, i.e., when the engagement between the seat lock and the movable striker is released, the sliding resistance of the first member and the second member against the case increases as described above. This increases the operating force of the operating member, making it easier for the operator to recognize the switch between adjusting the seat back angle and tilting the seat back forward. [Effects of the Invention]

[0014] As described above, according to the vehicle seat of the present invention, the angle adjustment of the seat back and the forward tilting of the seat back can be performed by operating a single operating member. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic side view showing a vehicle seat according to an embodiment and its surrounding configuration; [Figure 2] 1 is a side view showing a portion of a vehicle seat according to an embodiment; [Figure 3] 1 is a schematic diagram illustrating a control box and its surrounding configuration provided in a vehicle seat according to an embodiment, and illustrates an initial state of the control box. FIG. [Figure 4] 4 is a schematic view corresponding to FIG. 3, illustrating a state in which the seat lock is released by operating the luggage compartment lever. FIG. [Figure 5] 4 is a schematic diagram corresponding to FIG. 3, illustrating a state in which release of the slide lock is initiated by operation of the reclining lever. FIG. [Figure 6] 4 is a schematic diagram corresponding to FIG. 3, illustrating a state in which release of the seat lock is initiated by operation of the reclining lever. FIG. [Figure 7] FIG. 4 is a schematic view corresponding to FIG. 3, illustrating a state in which the reclining lever is at a full stroke. [Figure 8] FIG. 6 is a cross-sectional view showing a cut surface taken along line F8-F8 in FIG. 5. [Figure 9] FIG. 10 is a perspective view showing a second member of the control box. [Figure 10] FIG. 2 is a first perspective view showing a first member of the control box. [Figure 11] FIG. 2 is a second perspective view showing the first member of the control box. [Figure 12] FIG. 2 is a schematic side view showing a configuration of a vehicle seat and its surroundings according to a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0016] A vehicle seat 10 according to one embodiment of the present invention will be described below with reference to Figures 1 to 11. Note that in each figure, some reference numerals may be omitted to make the drawings easier to understand. Furthermore, the arrows FR and UP shown in Figures 1 and 2 indicate the front, left, and top of the vehicle seat 10, respectively. 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.

[0017] 1, a vehicle seat 10 according to this embodiment includes a seat cushion 12 on which a vehicle occupant sits, a seatback 14 that supports the occupant's back, and a headrest 16 that supports the occupant's head. The vehicle seat 10 is, for example, a rear seat of a station wagon-type vehicle, and is disposed at the front of a luggage compartment L of the vehicle. The front-rear, left-right, up-down directions of the vehicle seat 10 coincide with the front-rear, left-right, up-down directions of the vehicle.

[0018] The lower end of the seat back 14 is connected to the vehicle body B so as to be rotatable about a hinge shaft 18 whose axis is in the left-right direction, and the seat back 14 is tiltable forward and backward relative to the vehicle body B. The seat back 14 can be tilted forward to a forward-tilting position where it overlaps with the upper surface of the seat cushion 12.

[0019] 1 and 2, a seat lock 20 is provided on the upper part of the seat back 14. The seat lock 20 is provided on the outer left and right ends of the seat back 14 and includes a latch (not shown). The seat lock 20 corresponds to a movable striker (multi-stage striker) 22 provided on the side S of the vehicle body B.

[0020] 2, the movable striker 22 has a rail 24 fixed to the side S of the vehicle body B, a striker 26 attached so as to be able to slide relative to the rail 24, and a slide lock 28 attached to the rail 24. The rail 24 is elongated, with its longitudinal direction extending approximately in the front-to-rear direction, and is disposed in a position such that its longitudinal direction is aligned with the tilting direction of the seat back 14.

[0021] The striker 26 is slidable relative to the rail 24 within a certain range along the longitudinal direction of the rail 24. The slide lock 28 is configured to include a restricting member (not shown) that is attached so as to be displaceable relative to the rail 24. When this restricting member engages with the striker 26, the sliding of the striker 26 relative to the rail 24 is restricted, and when this restricting member disengages from the striker 26, the slide restriction is released.

[0022] A latch provided on the seat lock 20 engages with the striker 26. As a result, the seat back 14 is restrained against the side S of the vehicle body B in an upright position as shown in FIGS. 1 and 2. When the slide restriction of the slide lock 28 is released in this restrained state, the seat back 14 is permitted to rotate around the hinge shaft 18 within a certain range, and the reclining angle of the seat back 14 can be adjusted within the certain range. Furthermore, when the latch of the seat lock 20 is released from engagement with the striker 26, the seat back 14 is permitted to rotate forward around the hinge shaft 18, and the seat back 14 can be tilted forward onto the seat cushion 12.

[0023] The seat lock 20 and slide lock 28 are connected to a control box 42 via cables 34 and 36, respectively. The control box 42 is provided on the side S of the vehicle body B near the vehicle seat 10. The control box 42 is connected to a reclining lever 30 provided on the side S of the vehicle body B near the vehicle seat 10 and a luggage compartment lever 32 provided in the luggage compartment L via cables 38 and 40, respectively.

[0024] The reclining lever 30 corresponds to the "operating member" in this invention, and the luggage compartment lever 32 corresponds to the "remote control member" in this invention. The reclining lever 30 and the luggage compartment lever 32 are rotatably attached to, for example, the side portion S of the vehicle body B, and each can be rotated in one direction around a rotation center. Note that the "operating member" and "remote control member" in this invention are not limited to those that are rotated, but may also be those that are pulled or pressed.

[0025] As shown in Figures 3 to 7, the control box 42 has a case 44, a first member 46, and a second member 54. The case 44 is made of, for example, resin and has a long box shape. The case 44 is fixed to a side S of the vehicle body B. For convenience of explanation, the seat lock 20, slide lock 28, reclining lever 30, and luggage compartment lever 32 are shown schematically in Figures 3 to 7.

[0026] One end of outer casings 34A, 36A of the cables 34, 36 is secured to one longitudinal end (lower end in Figs. 3 to 7) of the case 44. One end of outer casings 38A, 40A of the cables 38, 40 is secured to the other longitudinal end (upper end in Figs. 3 to 7) of the case 44. Inner cables 34B, 36B, 38B, 40B of the cables 34, 36, 38, 40 are inserted into the case 44. A first member 46 and a second member 54 are housed in the case 44.

[0027] The first member 46 and the second member 54 are made of, for example, resin and formed into a long block shape. The first member 46 and the second member 54 are disposed in the case 44 with their respective longitudinal directions aligned with the longitudinal direction of the case 44. The length dimensions of the first member 46 and the second member 54 are set to be sufficiently shorter than the length dimension of the case 44. The length dimension of the first member 46 is set to be slightly longer than the length dimension of the second member 54. The first member 46 and the second member 54 are slidable in the longitudinal direction relative to the case 44.

[0028] As shown in FIG. 8, the first member 46 is formed to be thicker than the second member 54, and is formed in a stepped shape when viewed in the longitudinal direction of the case 44. The first member 46 has a step portion 46A that overlaps the second member 54 in the thickness direction. The step portion 46A has a protrusion 48 (see FIGS. 8, 10, and 11) that fits into a groove 56 (see FIGS. 8 and 9) formed in the second member 54. The groove 56 and the protrusion 48 extend along the longitudinal direction of the case 44. The first member 46 and the second member 54 are movable relative to each other in the longitudinal direction.

[0029] A cable end 36C provided at one end of an inner cable 36B of a cable 36 connected to the slide lock 28 is fastened to one longitudinal end of the first member 46 (the upper end in FIGS. 3 to 7). Also, a cable end 38C provided at one end of an inner cable 38B of a cable 38 connected to the reclining lever 30 is fastened to one longitudinal end of the first member 46.

[0030] A cable end 34C provided at one end of an inner cable 34B of a cable 34 connected to the seat lock 20 is anchored to the longitudinal center of the second member 54. In addition, a cable end 40C provided at one end of an inner cable 40B of a cable 40 connected to the luggage compartment lever 32 is anchored to the longitudinal center of the second member 54. The inner cables 34B, 36B, 38B, 40B are arranged so as to be offset in the width direction of the case 44 (the left-right direction in FIGS. 3 to 7).

[0031] A portion of the cable end 34C of the inner cable 34B is disposed within an elongated hole 50 formed in a stepped portion 46A of the first member 46. The elongated hole 50 has a longitudinal direction that is the same as the longitudinal direction of the first member 46. The first member 46 and the second member 54 are capable of relative movement along the longitudinal direction, but this relative movement is limited to a range in which a portion of the cable end 34C can move within the elongated hole 50 along the longitudinal direction of the elongated hole 50.

[0032] In the vehicle seat 10 configured as described above, the first member 46 and the second member 54 are normally disposed in the initial position shown in Fig. 3. In this state, a portion of the cable end 34C of the inner cable 34B is disposed near one longitudinal end of the elongated hole 50 (near the upper end of the elongated hole 50 in Figs. 3 to 7).

[0033] As shown in FIG. 4 , when the luggage compartment lever 32 is rotated in one direction, the second member 54, which is connected to the luggage compartment lever 32 via the inner cable 40B of the cable 40, slides toward the other longitudinal end of the case 44. This releases the seat lock 20, which is connected to the second member 54 via the inner cable 34B of the cable 34. Specifically, the latch of the seat lock 20 rotates, and the latch is disengaged from the striker 26. This allows the seat back 14 to be tilted forward. In this state, a portion of the cable end 34C of the inner cable 34B is positioned at one longitudinal end of the elongated hole 50.

[0034] As shown in FIG. 5, when the reclining lever 30 is rotated in one direction, the first member 46, which is connected to the reclining lever 30 via the inner cable 38B of the cable 38, slides toward the other longitudinal end of the case 44. This causes the slide lock 28, which is connected to the first member 46 via the inner cable 36B of the cable 36, to begin unlocking. Specifically, the restricting member of the slide lock 28 moves relative to the rail 24, and the engagement of the restricting member with the striker 26 begins to be released. Once the engagement of the restricting member with the striker 26 is released, the reclining angle of the seat back 14 can be adjusted. In this state, a portion of the cable end 34C of the inner cable 34B is positioned near the other longitudinal end of the elongated hole 50 (near the lower end of the elongated hole 50 in FIGS. 3 to 7).

[0035] As shown in FIG. 6 , when the reclining lever 30 is further rotated in one direction, the first member 46, which is connected to the reclining lever 30 via the inner cable 38B of the cable 38, further slides toward the other longitudinal end of the case 44. As a result, a portion of the cable end 34C of the inner cable 34B abuts against the other longitudinal end of the elongated hole 50, and the second member 54 begins to slide toward the other longitudinal end of the case 44 together with the first member 46. As a result, the seat lock 20, which is connected to the second member 54 via the inner cable 34B of the cable 34, begins to unlock. Specifically, the latch of the seat lock 20 begins to rotate, and the latch begins to disengage from the striker 26. Then, as shown in FIG. 7 , when the reclining lever 30 is fully stroked in one direction, the latch disengages from the striker 26, allowing the seat back 14 to be tilted forward.

[0036] As described above, when the reclining lever 30 is further rotated in one direction and the second member 54 slides together with the first member 46, the protrusion 52 (see FIGS. 8 and 11) formed on the first member 46 abuts against the abutment surface 58 (see FIG. 9) provided on the end face of the second member 54. This causes the first member 46 and the second member 54 to be displaced outward in the width direction of the case 44 (the left-right direction in FIG. 8), and the first member 46 and the second member 54 are pressed against both side walls 44S of the case 44. As a result, the sliding resistance of the first member 46 and the second member 54 relative to the case 44 increases, and the operating force required to operate the reclining lever 30 increases. Note that FIG. 8 schematically illustrates the protrusion 52.

[0037] According to the vehicle seat 10 configured as described above, the seat back 14, which is tiltable forward and backward relative to the vehicle body B, is provided with a seat lock 20. The movable striker 22 has a striker 26 attached to the side S of the vehicle body B so as to be slidable along the tilting direction, and a slide lock 28 that restricts the sliding of the striker 26. The striker 26 engages with the seat lock 20, thereby restraining the seat back 14 to the side S of the vehicle body. A reclining lever 30, which can be operated in one direction, and the slide lock 28 are connected to a first member 46 of a control box 42 via cables 38, 36, respectively, and the seat lock 20 is connected to a second member 54 of the control box 42 via a cable 34.

[0038] When the reclining lever 30 is operated in one direction, the first member 46 slides relative to the case 44 of the control box 42, and the slide restriction by the slide lock 28 is released. This allows the striker 26, which is engaged with the seat lock 20 of the seat back 14, to slide relative to the side S of the vehicle body B, enabling the angle of the seat back 14 to be adjusted. Furthermore, when the reclining lever 30 is operated further in one direction, the second member 54 slides together with the first member 46, and the engagement between the seat lock 20 and the striker 26 is released. This allows the seat back 14 to be tilted forward. As described above, according to this embodiment, the angle of the seat back 14 can be adjusted and the seat back 14 can be tilted forward by operating a single reclining lever 30. As a result, there is no need to provide a shoulder operating member 60 at the shoulder of the seat back 14, as in the comparative example shown in FIG. 12 .

[0039] In this comparative example, the shoulder operation member 60 and luggage compartment lever 32 are connected to the seat lock 20 via cables 62, 64, and the reclining lever 30 is connected to a slide lock (not shown) provided on the movable striker 22 via a cable 66. The shoulder operation member 60 can be rotated, pulled, or pressed. In this comparative example, the slide lock 28 can be unlocked by operating the reclining lever 30, and the seat lock 20 can be unlocked by operating the luggage compartment lever 32 and the shoulder operation member 60.

[0040] In this embodiment, by eliminating the shoulder operating member 60, it is possible to reduce the number of parts in the frame of the seat back 14, thereby making it possible to reduce the weight of the seat back 14. In addition, it is easier to ensure space for arranging a seat belt guide member (so-called belt guide) provided at the shoulder of the seat back 14. Furthermore, by consolidating the unlocking functions of the slide lock 28 and the seat lock 20 into one reclining lever 30, it is easier to adjust the operating force.

[0041] In this embodiment, the luggage compartment lever 32 provided in the luggage compartment L of the vehicle is connected to the second member 54 of the control box 42 via the cable 40. When the luggage compartment lever 32 is operated, the second member 54 slides relative to the case 44, and the engagement between the seat lock 20 and the striker 26 is released. This makes it possible to fold the seat back 14 forward from the luggage compartment L side.

[0042] Furthermore, in this embodiment, when the reclining lever 30 is further operated in the one direction as described above and the second member 54 slides together with the first member 46, the convex portion 52 formed on the first member 46 abuts against the abutment surface 58 provided on the second member 54, thereby increasing the sliding resistance of the first member 46 and the second member 54 against the case 44. This increases the operating force of the reclining lever 30, making it easier for the operator to sense with their hand the changeover between adjusting the angle of the seat back 14 and tilting the seat back 14 forward.

[0043] Although the present invention has been described above with reference to the embodiments, the present invention can be practiced with various modifications without departing from the spirit of the invention. Furthermore, it goes without saying that the scope of the present invention is not limited to the above-described embodiments. [Explanation of symbols]

[0044] 10 Vehicle seats 14 Seat back 20. Sheetrock 22 Movable Striker 26 Striker 28 Slide Lock 30 Reclining lever (operating member) 32 Luggage compartment lever (remote control member) 34, 36, 38, 40 cables 42 Control box 44 cases 46 First member 50 long hole 52 Convex part 54 Second member 58 Abutment surface B body L luggage compartment S side

Claims

1. a seat back that can tilt forward and backward relative to the vehicle body; a seat lock provided on the seat back; a movable striker that includes a striker attached to a side portion of a vehicle body so as to be slidable along the tilting direction and a slide lock that restricts the sliding, and that restrains the seat back to the side portion by engaging the striker with the seat lock; an operating member operable in one direction; a control box having a first member and a second member slidably supported on a case, the operation member and the slide lock being connected to the first member via cables, and the seat lock being connected to the second member via a cable; Equipped with When the operating member is operated in the one direction, the first member slides relative to the case, the restriction by the slide lock is released, and the angle of the seat back can be adjusted. When the operating member is further operated in the one direction, the second member slides together with the first member, the engagement between the seat lock and the striker is released, and the seat back can be folded forward.

2. a remote control member provided in a luggage compartment of the vehicle and connected to the second member via a cable; 2. The vehicle seat according to claim 1, wherein when the remote control member is operated, the second member slides relative to the case, thereby releasing the engagement between the seat lock and the striker.

3. 3. The vehicle seat according to claim 1, wherein when the operating member is further operated in the one direction and the second member slides together with the first member, a convex portion formed on one of the first member and the second member abuts against an abutment surface provided on the other of the first member and the second member, thereby increasing the sliding resistance of the first member and the second member against the case.

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