JPH0632169U - Vehicle seat device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a vehicle seat device equipped with a retractable seat back incorporating a child seat, ensure safety in use of the child seat and seat belt. [Structure] When the striker hook 61 is set to the lock-on position due to the displacement of the striker hook 61 of the seat lock device 50 and the operation restricting mechanism 45 that allows or prevents the seat belt unwinding action of the belt retractor 8. Is provided with an interlocking mechanism 25A that allows the seat belt unwinding action of the belt retractor 8 and restricts the seat belt unwinding action of the belt retractor 8 when it is set in the lock-off position. With such a configuration, the seat belt can be used only when the support performance thereof is ensured, that is, when the seat lock device 50 is in the lock-on state, and in response to this, the child seat 4 also corresponds to the seat lock device. It can be used only when 50 is locked on.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle seat device that includes a child seat that can be stored and taken out in the seat back portion, and a seat belt that restrains an occupant seated on the child seat.

[0002]

[Prior art]

 In recent years, in a vehicle seat device, a seat back portion of a fixed rear seat is provided with a child seat that is stored on the seat back side when not in use and is taken out from the seat back to the seat cushion side when used. It has been attempted to provide a seat belt for a child seat in a state of being fixed to a seat back (see, for example, Japanese Utility Model Publication No. 54-17924 and Japanese Utility Model Publication No. 54-17925).

[0003]

[Problems to be solved by the device]

 By the way, when the seat back is a fixed type as in this known example, the load applied to the seat belt is always directly supported on the vehicle body side through the seat back, and therefore the use of the child seat belt is not recommended. Without being limited by conditions, the seat belt and child seat can be used at any time as needed.

However, when the seat back in which the child seat is incorporated is foldable, the use of the child seat and the child seat seat belt is restricted depending on whether the seat back is fixed to the vehicle body side by the seat lock device. It That is, in the case of a retractable seat back, the seat back is fixed to or released from the vehicle body side by the seat lock device, and the child seat seat belt is fixed to the retractable seat back side. Therefore, the load applied to the seat belt is supported on the vehicle body side from the seat back via the seat locking device. Therefore, it is necessary to prevent the use of the child seat and the child seat belt when the seat lock device is locked off.

However, as far as the inventor of the present application knows, there is no one in which a child seat is built into a retractable seat back and a seat belt for a child seat is further provided on the retractable seat back. No useful proposals have been made regarding means for ensuring the safety in use of the child seat and the seat belt for the child seat in the vehicle seat device equipped with the back.

Therefore, the present invention has been made for the purpose of ensuring safety in use of the child seat and seat belt in a vehicle seat device having a retractable seat back incorporating a child seat. is there.

[0007]

[Means for Solving the Problems]

 In the present invention, as a specific means for solving such a problem, a seat that can be erected between a substantially upright position in use and a laid position in which the vehicle is tilted toward the front side of the vehicle from the position in use. Change the posture between the storage position where the child seat is buried and stored in the seat storage part formed on the front side of the seat back and the use position where the child seat is taken out from the seat back and placed on the seat cushion. While being installed as much as possible, it is equipped with a striker hook that operates between a lock-on state in which the seat back is fixed to the vehicle body side in the use position and a lock-off state in which the seat back is detached from the vehicle body side and the tilting operation thereof is allowed. A seat lock device is installed, and the seat back is extended from a belt retractor fixed on the back side of the seat back frame. In the vehicle seat device, the seat retractor is provided with a seat belt whose one end bypasses the upper part of the seat back frame, passes through the front of the seat storage part, and is fixed to the lower end part of the seat back frame. An operation restriction mechanism that allows or prevents the belt unwinding action, and the seat belt unwinding action of the belt retractor when the striker hook is set to the lock-on position due to the displacement of the striker hook of the seat lock device. The striker hook is set to the lock-off position, the operation restricting mechanism is controlled in accordance with the operating state of the seat lock device so as to restrict the seat belt unwinding action of the belt retractor. It is equipped with an interlocking mechanism that To have.

[0008]

[Action]

 With this configuration, when the seat lock device is in the lock-on state, the restricting mechanism allows the seat belt to be pulled out by the belt retractor, so that the seat belt is pulled out from the belt retractor for use. It is possible to squeeze and even use a child seat. On the other hand, when the seat lock device is in the lock-off state, the restraint mechanism prevents the seat belt from being pulled out by the belt retractor, so that the seat belt can be taken out from the belt retractor and used. Therefore, the child seat cannot be used.

[0009]

[Effect of device]

 Therefore, according to the vehicle seat device of the present invention, the seat belt can be used only when the support performance thereof is secured, that is, when the seat lock device is in the lock-on state, and the seat belt device is compatible with this. The child seat can also be used only when the seat lock device is locked on.This ensures that the seat belt load can be supported when the child seat and seat belt are used, and the child seat and seat belt can be supported. Despite the fact that it is installed on the retractable seat back side, it ensures high safety when using the child seat and seat belt.

[0010]

【Example】

 Hereinafter, the vehicle seat device of the present invention will be described in detail with reference to an embodiment. FIGS. 1 and 2 show a main portion of a vehicle rear seat 1 according to the embodiment of the present invention. The rear seat 1 is composed of a seat cushion 2 and a seat back 3, and the seat back 3 is further provided with a pair of left and right seat back sides 33, 33 that are fixed to the vehicle body at both ends in the vehicle width direction. , A first retractable seat back 31 and a second retractable seat back 31 which are inside the seat back sides 33, 33 and can be tilted in the vehicle front-rear direction (arrow A-B direction) about their lower ends as fulcrums. It is composed of an inverted seat back 32. The first retractable seat back 31 and the second retractable seat back 32 are fixed to the vehicle body side by a seat lock device 50 (see FIG. 4), which will be described later, which is operated by operation buttons 53 arranged on the shoulders thereof. (Hereinafter referred to as the lock-on state) or unlocked (hereinafter referred to as the lock-off state), and in the lock-on state, as shown by the solid lines in FIGS. In the lock-off state, as shown by a chain line in FIG. 1 (see reference numeral 31 '), the vehicle is tilted to the front position of the vehicle body.

Further, in this embodiment, of the first retractable seat back 31 and the second retractable seat back 32, the child seat 4 is provided on the side of the first retractable seat back 31 so that the child seat 4 can be stored and taken out freely. There is. That is, in the center of the front surface 31a of the first retractable seat back 31, a substantially rectangular recessed sheet storage portion 34 having an inclined upper end is formed, and the seat storage portion 34 is substantially A child seat 4 including a rectangular first seat portion 41 and a second seat portion 42 which is continuously bendable at an upper end of the first seat portion 41 is provided at a lower end of the first seat portion 41. It is attached so that it can be tilted in the front-back direction of the vehicle (arrow AB direction) with the part as a fulcrum.

At the storage position, the child seat 4 is stored in the seat storage portion 34 with the first seat portion 41 and the second seat portion 42 linearly extended as shown in FIG. In this state, the back surface 4a of the child seat 4 constitutes the front surface 31a of the first retractable seat back 31. On the other hand, in the in-use position, the second seat portion 42 is placed on the seat cushion 2 with the second seat portion 42 folded under the first seat portion 41 as shown in FIG. In this case, the back surface 41a of the first seat portion 41 serves as a seating surface for a child. In the storage position of the child seat 4, the magic tape 23 provided on the sheet storage section 34 side and the magic tape (not shown) provided on the second sheet section 42 side are adhered to each other to be stored. The state is maintained.

Further, as shown in FIG. 2, between the first retractable seat back 31 and the child seat 4, a pair of left and right described later is formed so as to extend vertically in the seat storage portion 34. The seat belts 5A and 5A are arranged. The seat belts 5A, 5A are detachably connected to the buckle 6 extending from the first seat portion 41 side by attaching the tongues 7, 7 provided in the middle portion thereof to the front side of the seat storage portion 34. It is provided to form a predetermined holding space with the bottom surface of the sheet storage portion 34.

On the other hand, the child seat 4 always uses the seat belts 5A and 5A when it is used, and the load applied to the seat belts 5A and 5A when the child seat 4 is in use. It is also necessary to ensure the supportive action of the vehicle and ensure the safety of the child, who is the occupant. From this point of view, in this embodiment, even if the child seat 4 can be set to the in-use position, the seat belts 5A, 5A themselves are prevented from being pulled out when the seat locking device 50 is in the lock-off state. The use of the child seat 4 can be effectively prevented, and the lock-on or lock-off state of the seat lock device 50 can be directly visually recognized to warn the operator of the operation of taking out the child seat 4 in the lock-off state. As a synergistic effect, the use of the child seat 4 is allowed only when the seat lock device 50 is securely locked and the belt load of the seat belts 5A, 5A can be reliably supported on the vehicle body side. Specifically, the operation of the belt retractor 8 is mechanically controlled according to the operating state of the seat lock device 50, and a predetermined display is performed.

Hereinafter, first, specific configurations and the like of the first retractable seatback 31 and the child seat 4 will be described with reference to FIG. 3, and thereafter, the seat lock will be described with reference to FIGS. 4 to 7. The configuration and operation of the device 50 and each mechanism related thereto will be described.

First foldable seat back 31 etc. FIG. 3 shows the overall construction of the first foldable seat back 31, the child seat 4, and the seat belt 5. The first inclinable seat back 31 is formed of a pipe in a rectangular frame shape, and a substantially rectangular plate body is attached to a seat back frame 10 to which a rectangular frame-shaped plate 11 is attached on the back side thereof. The pad 13 and the trim 14 and the putting 15 for enclosing the pad 13 are sequentially attached to a frame formed by attaching the backrest plate 16 composed of. The first retractable seat back 31 is tiltable in the vehicle front-rear direction by pivotally supporting both lower ends of the seat back frame 10 toward the vehicle body.

In the child seat 4, brackets 17a and 17a formed at the base end of a rectangular booster plate 17 are connected to brackets 20 and 20 provided at both lower ends of the backrest plate 16 by bolts 21 and 21, respectively. Therefore, the backrest plate 16 can be tilted in the contacting / separating direction. The booster plate 17 is provided with a pad 18 composed of a first pad 18a and a second pad 18b which are mutually bendable, and a trim 19 which encloses the pad 18 to form the child seat 4. .

One end of each of the seat belts 5A and 5A is fixed to the brackets 20 and 20 of the backrest plate 16 together with the booster plate 17 by the bolts 21 and 21 via belt anchors 9 and 9, respectively. At the same time, the other end is connected to a seat belt 5B that is pulled out from the belt retractor 8 described later after being pulled out to the upper end side of the seat back frame 10 through the trim 14 and the pad 13. The belt retractor 8 can be wound up as needed. The tongues 7, 7 attached to the seat belts 5A, 5B are detachably connected to a buckle 6 extending from the booster plate 17 side.

As shown in FIGS. 5 and 6, the belt retractor 8 winds the seat belt 5B around the winding shaft 8b which is constantly urged in the belt winding direction by a spring (not shown). The bracket 8a is attached to the backrest plate 16 side by bolting to the bosses 22, 22 formed on the lower back surface of the backrest plate 16 in a raised manner. A latch mechanism 45 is attached to the end of the winding shaft 8b. The latch mechanism 45 constitutes an operation restricting mechanism within the scope of the utility model registration claim, and includes a ratchet gear 46 fixed to the winding shaft 8b and a pivotal support swingable to the bracket 8a side. It also has a latch claw 47 which is constantly urged by a spring 48 in a direction in which it meshes with the latch gear 46. The other end of the first cable 25A, which is connected to the seat lock device 50, is connected to the latch claw 47, as will be described later. The latch mechanism 45 applies tension to the first cable 25A. In such a state, the ratchet claw 47 meshes with the latch gear 46 by the urging force of the spring 48, and restricts the rotation of the winding shaft 8b in the belt withdrawing direction (that is, withdrawing the seat belt 5B). On the other hand, when the first cable 25A is pulled, the engagement between the latch claw 47 and the latch gear 46 is released and the rotation of the winding shaft 8a is allowed (that is, the seat belt 5B is allowed to be pulled out). ) Do. The first cable 25A is pushed and pulled according to the operating state of the seat lock device 50 described later.

The seat lock device 50, such as the seat lock device 50, is attached to the lock mounting base plate 12 fixed to the shoulder portion of the seat back frame 10 as described above, and as shown in FIGS. 4 and 5. A catch mechanism 60, which will be described later, is incorporated in a catch bracket 60 fixed to the lock mounting base plate 12 in a state where the receiving groove 55 is opened toward the seat back side.

The catch mechanism 51 has a U-shaped striker receiving groove 63 and a striker hook 61 pivotally supported by a pin 71 so as to be rotatable in the arrow ab direction with respect to the catch bracket 60. The striker hook 61 is rotatably supported on one end side of the catch bracket 60 via a pin 72 and engages with an engaging portion 61a formed on the striker hook 61 to show the striker hook 61 in a solid line diagram in FIG. And a stopper claw 62 that holds the posture at the lock-on position. The first stopper pawl 62 is constantly urged toward the engagement position side shown in FIG. 4 by the spring 64, and the pin 73 provided on the first stopper pawl 62 is arranged vertically in the first retractable seat back 31. The stopper claw 62 is connected to an operating rod 52 provided, and the stopper claw 62 is forcibly released in the disengagement direction by pressing down the operating rod 53 (see FIG. 3) provided on the upper end of the operating rod 52. Then, the striker hook 61 is set to the lock-off position shown by the chain line in FIG. The rotation of the striker hook 61 from the lock-off position to the lock-on position causes the striker hook 61 to move to the striker 54 when the first retractable seat back 31 is operated from its fall position to the in-use position side. The contact is automatically performed, and the posture is maintained at the lock-on position by the stopper claw 62.

On the other hand, since the striker hook 61 is rotationally displaced between the lock-on position and the lock-off position as described above, the rotational displacement of the striker hook 61 is controlled by the operation control of the latch mechanism 45 and the like. For example, the striker hook 61 is formed with a cable hooking portion 66 projecting to the side of the hook, and the two cables of the first cable 25A and the second cable 25B are attached to the cable hooking portion 66. One end is connected to each.

The other end of the first cable 25A of the two cables 25A and 25B is connected to the latch claw 47 of the latch mechanism 45. Therefore, in the latch mechanism 45, when the seat lock device 50 is in the lock-on state, the first cable 25A is pulled and the latch claw 47 is disengaged from the latch gear 46, so that the seat belt 5B is pulled out. On the other hand, when the seat lock device 50 is in the lock-off state, tension does not act on the first cable 25A, so that the latch claw 47 meshes with the latch gear 46 and prevents the seat belt 5B from being pulled out. It

Therefore, the occupant, after taking out the child seat 4, first pulls on the seat belts 5A and 5A, and if the seat belts can be pulled out, the child seat 4 is set to the in-use position and used. Conversely, if the seat belts 5A and 5A cannot be pulled out, the child seat 4 may be used after the lock-on operation of the seat lock device 50 is performed. In this way, when the lock-on / lock-off of the seat lock device 50 is confirmed depending on whether or not the seat belts 5A and 5B can be pulled out, the child seat 4 is used when the seat lock device 50 is in the lock-off state. There is no such thing, and the safety is secured. In this embodiment, the first cable 25A corresponds to the interlocking mechanism within the scope of claims for utility model registration.

On the other hand, the other end of the second cable 25B is connected to the display mechanism 36 side described later. As shown in FIGS. 1 and 7, the display mechanism 36 is attached to the shoulder of the first retractable seatback 31 so as to guide the operation rod 52 arranged in a protruding state on the shoulder. 37 are provided. The case 37 has a display window 37a of a predetermined size formed on the side surface on the front side of the seat, and a fixing plate 38 colored, for example, green inside the display window 37a and a red plate, for example, red. The movable plate 39, which is colored in red, is arranged so that the movable plate 39 is located near the display window 37a. Further, the movable plate 39 is constantly urged upward by the spring 40 that is compressed between the movable plate 39 and the bracket 35 fixed to the lock mounting base plate 12, and one end of the second cable 25B is connected to the movable plate 39. Has been done.

Therefore, when the seat lock device 50 is in the lock-off position, no tension acts on the second cable 25B, so that the movable plate 39 is biased upward by the spring force of the spring 40, and A movable plate 39 colored in red faces the display window 37a of the case 37. On the other hand, when the seat lock device 50 is set to the lock-on position, the second cable 25B is pulled so that the movable plate 39 is pulled down and the display window 37a is fixed in green. The fixed plate 38 faces. That is, the window 37a of the case 37 is displayed in green when the seat locking device 50 is in the lock-on position, and is displayed in red when the seat locking device 50 is in the lock-off position. When performing the operation of, the seat lock device 50 is in the lock-on state (that is, the child seat 4 can be used) or the lock-off state (that is, the visual confirmation of the color display of the display window 37a). , It is possible to confirm in advance whether or not the use of the child seat 4 is prohibited. For example, in the case of red display, if the child seat 4 is desired to be used, the seat lock device 50 is first set to the lock-on position. After setting to, the operation of the child seat 4 will be started, which allows the use of the child seat 4 in the lock-off state. It is those and reliably prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of an essential part of a vehicle seat device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a child seat is taken out from the vehicle seat device shown in FIG.

FIG. 3 is an exploded perspective view of essential parts of the vehicle seat device shown in FIG. 1.

4 is an enlarged front view of the seat lock device shown in FIG.

5 is an enlarged perspective view of the seat belt portion shown in FIG.

6 is an explanatory view of the internal structure of the belt retractor portion shown in FIG.

FIG. 7 is an enlarged perspective view of the display mechanism portion shown in FIG.

[Explanation of symbols]

1 is a rear seat, 2 is a seat cushion, 3 is a seat back, 4 is a child seat, 5 is a seat belt, 6 is a buckle, 7 is a tongue, 8 is a belt retractor, 9 is a belt anchor, 10 is a seat back frame, and 11 is a seat back frame. Frame plate, 12 is a lock mounting base plate, 13
Is a pad, 14 is a trim, 15 is a putting, 16 is a backrest plate, 17 is a booster plate, 18 is a pad, 19 is trim, 20 is a bracket, 21 is a bolt,
23 is a velcro tape, 25 is a cable, 31 is a first retractable seat back, 32 is a second retractable seat back, 33 is a seat back side, 34 is a seat storage portion, 41 is a first
Seat portion, 42 a second seat portion, 45 a latch mechanism, 4
6 is a latch gear, 47 is a latch claw, 48 is a spring,
50 is a seat lock device, 51 is a catch mechanism, 52 is an operation rod, 53 is an operation button, 54 is a striker,
55 is a receiving groove, 60 is a catch bracket, 61 is a striker hook, 62 is a stopper claw, 63 is a striker receiving groove, 64 and 65 are springs, 66 is a cable hook portion, and 71 and 72 are pins.

Claims (1)

[Scope of utility model registration request] 1. A child seat is provided on a front surface of a seat back that can be erected between an in-use position in a substantially upright position and a reclining position in which the occupant is in a forward leaning position with respect to the in-use position. The seat back is attached so that the posture thereof can be changed between a storage position that is embedded and stored in the seat storage portion formed in the above and a use position that is taken out from the seat back and placed on the seat cushion. A seat lock device provided with a striker hook that operates between a lock-on state in which it is fixed to the vehicle body side at a time of use and a lock-off state in which it is disengaged from the vehicle body side and its tilting operation is permitted, and the seat back is further provided. Is paid out from a belt retractor fixed to the back side of the seatback frame, and one end of the belt retractor is on the seatback frame. A seat device for a vehicle, comprising a seat belt fixed to a lower end portion of the seat back frame, bypassing a portion and passing through the front of the seat storage portion, and allowing or blocking a seat belt unwinding action of the belt retractor. When the striker hook is set to the lock-on position in response to the displacement of the striker hook of the seat lock device, the seat belt let-out action of the belt retractor is allowed, and the striker hook is When the lock-off position is set, an interlocking mechanism for controlling the operation restricting mechanism corresponding to the operating state of the seat lock device so as to restrict the seat belt feeding action of the belt retractor is provided. Characteristic vehicle seat device.