JP2010208425A - Device for mounting child seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for mounting a child seat adjusting the height of a buckle in accordance with the child seat and retaining the child seat in a stable condition. <P>SOLUTION: A vehicle 10 with this device for mounting the child seat includes a height adjusting part 53 adjusting the height of a seat cushion between an occupant restraining position H1 with the buckle 45 protruded from the seat cushion 34 by a first protrusion amount S1, and a child seat mounting position H2 with the buckle protruded from the seat cushion by a second protrusion amount S2. It further includes a determining part 55 transmitting a placement signal to the height adjusting part with the child seat 17 placed on the seat cushion. When the placement signal is transmitted to the height adjusting part from the determining part, the height of the seat cushion is adjusted to the child seat mounting position H2 by the height adjusting part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a child seat attachment device for attaching a child seat by inserting a webbing into an insertion opening of the child seat.

When an infant sits on a vehicle seat, a child seat is used as a means for restraining the infant well.
This child seat has a webbing insertion opening formed in a pedestal that holds the seat body, the webbing of the seat belt device is inserted into the webbing insertion opening, and the tongue provided for the webbing is held on the vehicle seat by being engaged with the buckle. The

Here, in order to restrain an adult occupant with the webbing of the seat belt device, the buckle height is set so that the webbing passes over the hip bone of the adult occupant.
However, child seats are often provided with a webbing insertion port (attachment port) at a position lower than the hipbone of an adult occupant, and the webbing insertion port approaches the buckle, so that the child seat can be stably held by webbing. It can be considered that it takes time to perform the mounting work.

Incidentally, some child seats are known in which the webbing insertion port is set at a position higher than the buckle of the seat belt device so that the child seat can be held stably in the vehicle seat.
By setting the webbing insertion port at a position higher than the buckle, the webbing can be satisfactorily tightened in a state where the tongue is engaged with the buckle.
Therefore, the child seat can be stably held by webbing (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-1000076

However, since the seat belt device provided in the vehicle seat restrains the adult occupant with the webbing of the seat belt device, the buckle height is set so that the webbing passes over the hip bone of the adult occupant, It is conceivable that the height of the buckle with respect to the seat cushion is different for each vehicle.
Therefore, in order to make the child seat correspond to a vehicle with a different buckle height, it is required to set the webbing insertion port at a position higher than the buckle in correspondence with each vehicle. For this reason, it has been considered difficult to associate a child seat with each vehicle.

  It is an object of the present invention to provide a child seat attachment device that can hold a child seat in a stable state by adjusting the height of a buckle with respect to the seat cushion in correspondence with the child seat.

  The invention according to claim 1 is the child seat mounting device for mounting the child seat on the seat by mounting the child seat on the seat cushion, inserting the webbing into the insertion opening of the child seat, and engaging the webbing with the buckle. A first position where the buckle protrudes from a seating surface of the seat cushion with a first protruding amount, and a buckle that protrudes from the seating surface of the seat cushion with a second protruding amount smaller than the first protruding amount. A height adjusting unit capable of adjusting the height of the buckle or the seat cushion at the protruding second position, determining that the child seat is placed on the seat cushion, and placing a placement signal A determination unit that communicates to the height adjustment unit; If, and adjusting the height of the buckle or the seat cushion to said second position by the height adjusting portion.

  According to a second aspect of the present invention, the second position is a position where the height of the buckle is lower than the insertion opening in a state where the child seat is placed on the seat cushion.

  According to a third aspect of the present invention, the determination unit receives the switching signal for switching the airbag device provided in front of the seat from the switching switch for switching to the non-operating state to the non-operating state based on the switching signal. It is determined that the child seat is placed on a cushion.

Here, the vehicle provided with the child seat attachment device is provided with an airbag device in front of the seat for attaching the child seat. Furthermore, a changeover switch is provided that switches between an operating state in which the airbag device can be deployed and a non-operating state in which the airbag device cannot be deployed.
Specifically, the change-over switch switches the airbag device to an activated state when an adult occupant sits on the seat, and switches the airbag device to an inactivated state when a child seat is attached to the seat.

  Therefore, in claim 3, when the airbag device is switched to the non-actuated state by the changeover switch, the determination unit determines that the child seat is placed.

In the invention according to claim 1, the buckle or the seat cushion can be adjusted to one of the first position and the second position by the height adjusting portion. Then, when the child seat is placed on the seat cushion, a placement signal is transmitted from the determination unit to the height adjustment unit, and the buckle or the seat cushion is adjusted to the second position by the height adjustment unit.
The second position is a position where the protrusion amount of the buckle is suppressed to be small with respect to the seat cushion.

That is, with the child seat placed on the seat cushion, the protrusion amount of the buckle can be kept small, and the positional relationship of the buckle with respect to the insertion opening of the child seat can be kept good.
Therefore, the webbing can be satisfactorily tightened in a state where the webbing is inserted into the insertion opening of the child seat and the webbing is engaged with the buckle.
Thus, by adjusting the height of the buckle in correspondence with the child seat, the child seat can be held in a state stabilized by webbing.

  In the invention which concerns on Claim 2, the height of the buckle was made lower than the insertion port of a child seat. Therefore, in a state where the webbing is inserted into the insertion port and the webbing is engaged with the buckle, the webbing can be satisfactorily tightened, and the child seat can be held in a stable state by the webbing.

  In the invention which concerns on Claim 3, when the airbag apparatus was switched to the non-operation state by the changeover switch, it determined with the determination part being in the state in which the child seat was mounted.

Therefore, the changeover switch for switching the airbag device to the non-operating state can also be used as a detection unit that detects whether or not the child seat is placed.
Thus, by using an existing changeover switch as a detection unit, it is not necessary to newly provide a detection unit, and the configuration can be simplified.

It is a perspective view which shows the vehicle provided with the attachment apparatus of the child seat which concerns on this invention. It is a perspective view which shows the attachment apparatus of the child seat which concerns on this invention. It is a block diagram which shows the attachment apparatus of the child seat which concerns on this invention. It is a side view explaining the buckle protrusion amount when an adult passenger | crew sits on the seat | sheet of FIG. It is a side view explaining the buckle protrusion amount when a child seat is attached to the seat of FIG. It is a figure explaining the example which restrains an adult crew member on the seat of FIG. It is a figure explaining the example which attaches a child seat to the sheet | seat of FIG.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Note that “front”, “rear”, “left”, and “right” indicate the direction viewed from the driver, the front side is Fr, the rear side is Rr, the left side is L, and the right side is R.

A vehicle (hereinafter referred to as “vehicle”) 10 provided with a child seat mounting apparatus according to an embodiment will be described.
As shown in FIG. 1, the vehicle 10 has an instrument panel 12 provided in a front portion of a passenger compartment 11, an airbag device 13 provided in the instrument panel 12, and an airbag device 13 in an activated / non-operated state. A changeover switch 14 for switching to an operating state, a seat 15 provided behind the vehicle body of the instrument panel 12, a seat belt device 16 for restraining an occupant seated on the seat 15, and a seat belt device 16 attached to the seat 15 A child seat 17 and a seat height adjusting means (a child seat mounting device) 18 capable of adjusting the height of the seat cushion are provided.

  In the instrument panel 12, an airbag device 13 is provided at a front portion 12 a of the seat 15, and a changeover switch 14 is provided at an end facing the side door 22.

  The airbag device 13 deploys an airbag (not shown) at the time of a collision, and protects an occupant seated on the seat 15 with the deployed airbag.

The changeover switch 14 is a switch that switches between an operating state in which the airbag device 13 can be deployed and a non-operating state in which the airbag device 13 cannot be deployed.
The changeover switch 14 can be switched between an “operating position” P1 (see FIG. 6) and a “non-operating position” P2 (see FIG. 7) by inserting the key 25 into the key cylinder 24 and operating the key 25. Is possible.

That is, when an adult occupant 27 (see FIG. 6) sits on the seat 15, the airbag device 13 can be switched to the “operating state” by operating the key 25 inserted into the key cylinder 24.
Therefore, in the state where the adult occupant 27 is seated on the seat 15, the bag body (not shown) of the airbag device 13 is deployed at the time of the collision, and the adult occupant 27 seated on the seat 15 is protected by the deployed bag body. Is possible.

On the other hand, when the child seat 17 is attached to the seat 15, the airbag device 13 can be switched to the “non-operating state” by operating the key 25 inserted into the key cylinder 24.
In the state where the child seat 17 is attached to the seat 15, it is possible to prevent the bag body (not shown) of the airbag device 13 from being deployed at the time of collision.

  As shown in FIG. 2, the seat 15 includes a base 33 provided on the vehicle body floor 31 via a leg portion 32 so as to be slidable in the longitudinal direction of the vehicle body, a seat cushion 34 provided on the base 33 so as to be lifted and lowered A lifter 35 for raising and lowering the seat cushion 34, a seat back 36 provided at the rear portion of the seat cushion 34, and a headrest 37 provided at the top of the seat back 36 are provided.

The lifter 35 is provided between the base 33 and the seat cushion 34.
The lifter 35 is a general lifting mechanism used for a normal seat (seat having a lifting function), and drives an electric motor (not shown) to lift and lower the seat cushion 34.

  The seat belt device 16 has both ends of a winding device (not shown) housed in the lower part of the pillar 41, a lower fixture (not shown) provided on the vehicle body floor 31, and the lower fixture and the winding device. Are connected to each other, an upper guide 43 that supports the webbing 42 on the top of the pillar 41, a tongue 44 that is slidably provided on the webbing 42, and a buckle that can be engaged (engaged) with the tongue 44. Joint portion) 45.

  The buckle 45 is provided at the upper end of the lower fixture 46 attached to the vehicle body floor 31 and is disposed along the rear side portion 33a of the base 33 (that is, the rear side portion 34a of the seat cushion 34).

The child seat 17 is attached to the seat 15 with a webbing 42 in a state of being placed on the seat cushion 34.
Specifically, the child seat 17 is mounted on the seat cushion 34, the webbing 42 is inserted through the insertion opening (webbing insertion opening) 51 of the child seat 17, and the tongue 44 is locked (engaged) with the buckle 45. 17 is attached to the sheet 15.

  As shown in FIGS. 1 and 3, the seat height adjusting means 18 detects a height adjusting unit 53 that can adjust the height of the seat cushion 34 and that the child seat 17 is placed on the seat cushion 34. A detection unit 54 and a determination unit (control unit) 55 that transmits the placement signal / non-placement signal to the height adjustment unit 53 based on the switching signal / non-switching signal transmitted from the detection unit 54 are provided.

The height adjustment unit 53 uses the lifter 35 of the sheet 15.
That is, the height adjustment unit 53 drives the electric motor of the height adjustment unit 53 (that is, the lifter 35) based on the placement signal / non-placement signal from the determination unit 55, thereby causing the seat cushion 34 (FIG. 2).

  In addition, since the existing lifter 35 is also used as the height adjusting unit 53, it is not necessary to newly provide the height adjusting unit 53, and the configuration can be simplified.

As shown in FIG. 4, the seat cushion 34 is lowered by driving the electric motor of the height adjuster 53 (lifter 35) in the normal direction to adjust the seat cushion 34 to the occupant restraint position (first position) H <b> 1. Is possible.
In a state where the seat cushion 34 is disposed at the occupant restraint position H1, the upper end portion 45a of the buckle 45 protrudes relatively large from the seat surface 34b of the seat cushion 34 by the first protrusion amount S1.
Therefore, the buckle 45 is set to a height at which the webbing 42 passes over the hip bone of the adult occupant 27.
Thereby, the adult occupant 27 can be appropriately restrained by the webbing 42.

Further, by projecting the upper end portion 45a of the buckle 45 relatively large from the seat surface 34b of the seat cushion 34, the buckle 45 can be disposed at a position where it can be easily grasped by hand.
Thereby, the operativity at the time of attaching / detaching the tongue 44 to the buckle 45 can be improved.

On the other hand, as shown in FIG. 5, the seat cushion 34 can be lifted by rotating the electric motor of the height adjusting unit 53 (lifter 35) in the reverse direction to adjust the child seat mounting position (second position) H <b> 2. Is possible.
With the seat cushion 34 disposed at the child seat mounting position H2, the upper end 45a of the buckle 45 projects from the seat surface 34b of the seat cushion 34 by the second projecting amount S2.

The second protrusion amount S2 is smaller than the first protrusion amount S1 (see FIG. 4).
Therefore, the positional relationship of the buckle 45 with respect to the insertion opening 51 of the child seat 17 can be kept good.
Accordingly, the webbing 42 can be satisfactorily tightened in a state where the webbing 42 is inserted into the insertion port 51 of the child seat 17 and the tongue 44 is engaged with the buckle 45.

The child seat mounting position H <b> 2 is arranged such that the upper end portion 45 a of the buckle 45 is lower than the insertion opening 51 in a state where the child seat 17 is placed on the seat cushion 34.
Therefore, in a state where the webbing 42 is inserted through the insertion port 51 and the webbing 42 is engaged with the buckle 45, the webbing 42 can be tightened along the extension line 57 of the buckle 45 even better.

The detection unit 54 shown in FIGS. 1 and 3 uses the changeover switch 14 of the airbag device 13.
That is, the detection unit 54 switches between an operating state in which the airbag device 13 can be deployed and a non-operating state in which the airbag device 13 cannot be deployed. It is possible to tell.

  In addition, since the existing changeover switch 14 is also used as the detection unit 54, it is not necessary to newly provide the detection unit 54, and the configuration can be simplified.

When the switching signal is transmitted from the detection unit 54, the determination unit 55 transmits a placement signal indicating that the child seat 17 is placed on the height adjustment unit 53 based on the transmitted switching signal.
The seat cushion 34 can be moved up and down by transmitting a placement signal to the height adjusting unit 53 and driving the electric motor of the height adjusting unit 53.
Therefore, the seat cushion 34 can be adjusted (moved) to the occupant restraint position H1 (see FIG. 4) and the child seat mounting position H2 (see FIG. 5).

Next, an example in which the adult occupant 27 is restrained by the seat belt device 16 will be described with reference to FIG.
The key 25 is inserted into the key cylinder 24 of the changeover switch 14 (that is, the detection unit 54), and the key 25 is operated to switch to the “operation position” P1.
The detection unit 54 is switched to the operating state, and a non-switching signal is transmitted from the detection unit 54 to the determination unit 55.

The determination unit 55 transmits a non-placement signal (sheet lowering signal) to the lifter 35 (that is, the height adjustment unit 53) based on the non-switching signal transmitted from the detection unit 54.
When the non-placement signal (sheet lowering signal) is transmitted to the height adjusting unit 53, the electric motor of the height adjusting unit 53 is driven (forward rotation driving).
When the electric motor of the height adjusting unit 53 is driven (normally driven), the seat cushion 34 is lowered to the occupant restraint position H1.

In this state, the seat surface 34b of the seat cushion 34 is disposed below the upper end portion 45a of the buckle 45, and the upper end portion 45a of the buckle 45 is relatively relatively far from the seat surface 34b of the seat cushion 34 by the first protrusion amount S1. It protrudes greatly.
Therefore, the height of the buckle 45 can be set so that the webbing 42 passes over the hip bone of the adult occupant 27, and the adult occupant 27 can be suitably restrained by the webbing 42.

Further, by projecting the upper end portion 45a of the buckle 45 relatively large from the seat surface 34b of the seat cushion 34, the buckle 45 can be disposed at a position where it can be easily grasped by hand.
Thereby, the operativity at the time of attaching / detaching the tongue 44 to the buckle 45 can be improved, and the usability can be improved.

Next, an example in which the child seat 17 is attached by the seat belt device 16 will be described with reference to FIG.
A key 25 (see also FIG. 1) is inserted into the key cylinder 24 of the changeover switch 14 (that is, the detection unit 54), and the key 25 is operated to switch to the “inactive position” P2.
The detection unit 54 is switched to an inoperative state, and a switching signal is transmitted from the detection unit 54 to the determination unit 55.

The determination unit 55 transmits a placement signal (a sheet raising signal) to the lifter 35 (that is, the height adjustment unit 53) based on the switching signal transmitted from the detection unit 54.
When the placement signal (sheet raising signal) is transmitted to the height adjustment unit 53, the electric motor of the height adjustment unit 53 is driven (reverse drive).
When the electric motor of the height adjusting unit 53 is driven (reversely driven), the seat cushion 34 is raised to the child seat mounting position H2.

In this state, the upper end 45a of the buckle 45 protrudes from the seat surface 34b of the seat cushion 34 by the second protrusion amount S2. The second protrusion amount S2 is smaller than the first protrusion amount S1 (see FIG. 4).
Therefore, the positional relationship of the buckle 45 with respect to the insertion opening 51 of the child seat 17 can be kept good.

Accordingly, the webbing 42 can be satisfactorily tightened in a state where the webbing 42 is inserted into the insertion port 51 of the child seat 17 and the tongue 44 is engaged with the buckle 45.
Thus, by adjusting the height of the buckle 45 corresponding to the insertion opening 51 of the child seat 17, the child seat 17 can be held in a stable state by the webbing 42.

Further, the upper end portion 45 a of the buckle 45 is disposed at a position lower than the insertion port 51.
Therefore, in a state where the webbing 42 is inserted into the insertion port 51 and the webbing 42 is engaged with the buckle 45, the webbing 42 can be along the extended line 57 of the buckle 45.
Thereby, the webbing 42 can be tightened more favorably, and the child seat 17 can be held in a more stable state by the webbing 42.

Note that the child seat mounting device (that is, the seat height adjusting means) 18 according to the present invention is not limited to the above-described embodiment, and can be changed or improved as appropriate.
For example, in the above-described embodiment, the example in which the seat cushion 34 is moved up and down to adjust the protruding amount of the buckle 45 has been described. Is possible.

Moreover, although the said Example demonstrated the example which used the changeover switch 14 of the airbag apparatus 13 as the detection part 54, it is not limited to this.
For example, a detection unit 54 (such as a load sensor) that detects the child seat 17 may be provided in the seat cushion 34.
Furthermore, when the child seat 17 is placed on the seat 15, for example, a switch that is manually operated can be provided as the detection unit 54.
Note that this switch can be configured to be pushed by the child seat 17 when the child seat 17 is placed on the seat 15.

Further, in the embodiment, when the child seat 17 is attached to the seat 15, the upper end portion 45a of the buckle 45 is protruded upward from the seat surface 34b of the seat cushion 34 by the second protrusion amount S2 (that is, the protrusion amount is + Although the example of (plus) is described, the present invention is not limited to this, and the protrusion amount can be set to-(minus).
In other words, the upper end portion 45a of the buckle 45 can be protruded downward from the seat surface 34b of the seat cushion 34 by the second protrusion amount S2 (that is, the protrusion amount is-(minus)).

  In the above-described embodiment, the example using the existing lifter 35 as the height adjusting unit 53 has been described. However, the present invention is not limited to this, and a means for raising and lowering the seat cushion 34 may be newly provided. .

  Further, the airbag device 13, the changeover switch 14, the seat 15, the child seat 17, the seat belt device 16, the seat height adjusting means 18, the seat cushion 34, the lifter 35, the webbing 42, the tongue 44, and the buckle 45 shown in the above embodiment. The shapes and configurations of the insertion port 51, the height adjustment unit 53, the detection unit 54, and the determination unit 55 are not limited to those illustrated, and can be changed as appropriate.

  INDUSTRIAL APPLICABILITY The present invention is suitable for application to a vehicle including a child seat attachment device that attaches a child seat by inserting a webbing through a child seat insertion opening.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 13 ... Airbag device, 14 ... Changeover switch, 15 ... Seat, 17 ... Child seat, 16 ... Seat belt device, 18 ... Seat height adjustment means (child seat mounting device), 34 ... Seat cushion, 34b ... Seat surface, 35 ... Lifter, 42 ... Webbing, 44 ... Tongue, 45 ... Buckle, 51 ... Insertion port, 53 ... Height adjustment part, 54 ... Detection part, 55 ... Determination part, H1 ... Passenger restraint position (first Position), H2 ... child seat mounting position (second position), P1 ... "operating position", P2 ... "non-operating position", S1 ... first protrusion amount, S2 ... second protrusion amount.

Claims (3)

In the child seat mounting device for mounting the child seat on the seat by mounting the child seat on the seat cushion, inserting the webbing into the insertion opening of the child seat and engaging the webbing with the buckle.
A first position where the buckle protrudes from a seating surface of the seat cushion with a first protruding amount, and a buckle that protrudes from the seating surface of the seat cushion with a second protruding amount smaller than the first protruding amount. A height adjusting portion capable of adjusting a height of the buckle or the seat cushion at the protruded second position;
It is determined that the child seat is placed on the seat cushion, and includes a determination unit that transmits a placement signal to the height adjustment unit,
When the position signal is transmitted from the determining unit to the height adjusting unit, the height of the buckle or the seat cushion is adjusted to the second position by the height adjusting unit. Child seat mounting device. The second position is
The child seat mounting device according to claim 1, wherein the height of the buckle is lower than the insertion port in a state where the child seat is placed on the seat cushion. The determination unit
A state in which the child seat is placed on the seat cushion based on the switching signal when a switching signal from the switching switch that switches the airbag device provided in front of the seat to the non-operating state is transmitted to the non-operating state. The child seat mounting apparatus according to claim 1, wherein the child seat mounting apparatus is determined to be in the state.

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