JPH0224353Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a child restraint device for restraining and protecting a child occupant riding in a vehicle.

[Background Art] A vehicle is equipped with a restraining webbing that is attached to a passenger seated on a seat.

This restraint webbing is designed to be properly attached when an adult occupant is seated on the seat, but is not necessarily properly placed for a child occupant.

For this reason, in the past, a restraint system body was mounted on the vehicle seat and attached to the seat using restraint webbing, and the child occupant was seated on the restraint system body, and a special restraint device provided on the restraint system body was used to ensure that the child occupant was in an appropriate protective state. A child restraint device has been proposed.

The restraint device provided in this child restraint system is configured to place a child occupant in a restrained state by engaging a tongue plate with a buckle device at the tip of a crotch belt. This crotch belt passes through the child occupant's crotch. Therefore, when the child occupant is seated, the buckle device may be caught between the restraint device body and the child occupant when the child occupant is seated on the crotch belt, and the occupant may find it troublesome to pull out the crotch belt.

[Purpose of the invention] Taking the above facts into consideration, the object of the present invention is to provide a child restraint system in which the crotch belt is unlikely to be caught between a seated child occupant and the restraint system body.

[Summary of the invention] In the child restraint system according to the invention, the crotch belt has a collapsible structure, so that the crotch belt is folded down before the child occupant is seated, making it easier for the child occupant to sit. The crotch belt is prevented from being caught between the occupant and the restraint device main body, and after the child occupant is seated, the crotch belt is erected from the crotch of the child occupant to facilitate engagement of the tongue plate with the buckle device.

[Embodiment of the invention] As shown in FIGS. 1 and 2, the child restraint device according to this embodiment has a structure in which a child restraint webbing 12, which is a restraint device, is attached to a restraint device main body 10.

The restraint device main body 10 includes a seat plate 14, a backrest 16, and a pair of side walls 1, which are integrally molded from synthetic resin or the like.
8 and 20 are provided.

The seat plate 14 is mounted on a seat base 22 of a vehicle seat attached to a vehicle as shown in FIG.
It is now coming into contact with the Side walls 18, 20
are connected to both sides of the seat plate 14 and the backrest 16, and are provided upright on the sides of the child occupant 26 seated on the seat plate 14, so as to restrain the child occupant 26 from moving in the lateral direction of the vehicle. There is.

The child restraint webbing 12 includes a pair of continuous webbings 28, 30 and a crotch belt 32. One end of each of the continuous webbings 28 and 30 is pulled out below the seat plate 14 through an opening 34 formed in the seat plate 14, and an anchor member is provided below the seat plate 14 so that the seat plate 14 can be pulled out upward. It is blocked. Also continuous webbing 2
The other ends of 8 and 30 are openings 3 formed in the backrest part 16.
6 and is pulled out to the back of the back rest 16, and is wound around an anchor member (not shown) on the back of the back rest 16 and turned over, and its tip is pulled out to the front of the back rest 16 to extend its length. It is locked to the adjuster 38, thereby preventing the backrest 16 from being pulled out forward. The backrest 16 has an opening 36
In addition, an opening 40 is provided so that the locking position of the continuous webbings 28, 30 can be changed depending on the physique of the child occupant seated.

The middle part of the continuous webbing 28 is inserted into the long hole 44 formed in the tongue plate 42, whereby the continuous webbing 28 locks the tongue plate 42, and the tongue plate 42 moves in the longitudinal direction of the continuous webbing 28. It's becoming possible.
This tongue plate 42 has a buckle engaging protrusion 4.
2A is protruded.

On the other hand, the intermediate portion of the continuous webbing 30 passes through a long hole 48 in the tongue plate 46, thereby allowing the tongue plate 46 to move in the longitudinal direction of the continuous webbing 30. A connecting projection 46A projects from the tongue plate 46, and a long through hole 50 is bored through the connecting projection 46A through which the buckle engaging projection 42A passes.

The crotch belt 32 will be explained in detail.
As shown in FIGS. 3 and 4, the crotch belt 32
The buckle device 54 and the crotch webbing 56
It is equipped with The buckle device 54 has a built-in lock mechanism (not shown) that engages and holds the buckle engaging protrusion 42A of the tongue plate 42.

The crotch webbing 56, which has one end secured to the buckle device 54, passes through the base member 58, is folded back at a stopper 60, and is secured to the intermediate portion by sewing.

The base member 58 has a rectangular cylindrical shape, and a pair of claws 62 protruding from a portion thereof are locked into a through hole 64 formed in the strength member 14A of the seat plate 14. Therefore, the stopper 60 that comes into contact with the tip of the claw 62 is arranged on the back side of the seat plate 14.

A portion of the base member 58 is formed with a concave cam surface 66 shown in detail in FIG.
It serves as a receiver for the protrusion 70 of No.8. This cover 6
8 is a thin synthetic resin cylinder that covers a part of the crotch webbing 56 and the buckle device 54. This protrusion 70 is arranged on one side in the width direction of the cover 68, that is, on one side in the left direction in FIG.
A rotational force is generated in the clockwise direction in Fig. 3 around .

This rotational force is supported by a stopper portion 72 protruding from the widthwise end opposite to the protrusion 70 that comes into contact with the surface of the seat plate 14, thereby causing the crotch belt 32 to stand up.

However, this crotch belt 32 is rotated counterclockwise in FIG. 3 against the tension of the crotch webbing 56, and when the line of action of the webbing tension passes through the center of rotation C, the biasing force is reversed, and as a result, the third
As shown by imaginary lines in the figure, the cover 68 is designed to fall down until the front surface comes into contact with the seat plate 14.
Therefore, the crotch belt 32 can take two positions: an upright position and a flat position.

Note that the buckle device 54 has a release button 7.
4, so that the engagement of the tongue plate 42 can be released by a pressing operation by the occupant.

If the buckle device 54 is inserted into the buckle device 54 after passing the buckle engaging protrusion 42A of the tongue plate 42 into the elongated hole 50 of the tongue plate 46, the child occupant 26 seated on the seat plate 14 will be fitted with a five-point webbing. be able to. That is, the continuous webbing 28 between the opening 36 and the tongue plate 42 and the continuous webbing 30 between the opening 36 and the tongue plate 48 form a pair of shoulder webbings.
The continuous webbing 28 between the tongue plate 42 and the opening 34 and the continuous webbing 30 between the tongue plate 46 and the opening 34 act as a pair of lap webbings, and the crotch belt 32
will be placed between the child occupant's 26 crotches.

As shown in detail in FIG. 2, the seat plate 14 of this embodiment has a pair of slits 76 and 78 formed on both sides. The slits 76 and 78 communicate with the outside at the front end surface of the seat plate 14, that is, at the front end of the vehicle when the restraint device main body 10 is attached, and are rectangular spaces in plan view.

Therefore, if the middle part of the restraint webbing 80 attached to the vehicle seat is inserted into these slits 76 and 78 as shown by the imaginary lines in FIGS. 1 and 2, the middle part of the restraint webbing 80 will be attached to the seat. The seat plate 14 is not exposed to the upper surface of the plate 14.
A restraint webbing 80 is placed below the child occupant 6 who is seated on the vehicle.

The required length of the restraint webbing 80 can be shortened by making the portion of the seat plate 14 thinner than the front end of the vehicle, as shown by the broken line in FIG. 1, through which the restraint webbing 80 passes.

As shown in FIG. 1, one end of the restraining webbing 80 is secured to an anchor plate 84 provided on the vehicle side wall 82, and the other end is wound up by a biasing force onto a winding device 86 attached to the vehicle side wall 82. ing. This winding device 86 preferably has a built-in inertia lock mechanism that instantly stops pulling out the restraining webbing 80 in the event of a vehicle emergency.

The intermediate portion of the restraining webbing 80 passes through a long hole 90 in the tongue plate 88, so that the tongue plate 88 can be engaged with a buckle device 92 that is erected from the vehicle body. Further, the restraining webbing 80 between the tongue plate 88 and the winding device 86 is folded back by a through ring 94 attached to the vehicle side wall 82. Therefore, when an adult occupant seated on the adult seat formed by the seat base 22 and the seat back 24 engages the tongue plate 88 with the buckle device 92,
A lap webbing is attached between the anchor plate 84 and the buckle device 92, and a shoulder webbing is attached between the buckle device 92 and the through ring 94 (the attached state is not shown).

The upper end portions of the side walls 18 and 20 of the restraint device main body 10 serve as abutting portions for the restraint webbing 80. That is, the restraining webbing 80 extends from the slit 76 to the tongue plate 88, and the restraining webbing 8 extends from the slit 78 to the anchor plate 84.
0 is bent at the upper end of this side wall 18, thereby ensuring that the restraint device body 10 is securely attached to the seat base 2.
2. It can be fixed to the seat bag 24.

Further, an L-shaped protrusion 96 is provided on the outside of each of the side walls 18 and 20, and a slit 98 is formed between the side wall 18 and the outside of the side wall 18. This slit 9
8 opens toward the rear of the vehicle when the restraint device main body 10 is attached. Into this slit 98 is inserted an intermediate portion of the restraining webbing 80 which is folded back at the upper ends of the side walls 18, 20 and extends to the buckle device 92 and the anchor plate 84. This slit 98 is particularly effective when attaching the restraint device main body 10 to the vehicle seat in the opposite direction to that shown in FIG. That is, when a child occupant with a small physique, such as an infant, is accommodated in the restraint system main body 10, it is preferable that the child occupant rides the vehicle in a state facing the rear of the vehicle. It becomes necessary to install it in the opposite direction to that shown in the figure. In this case, the slit 98 can prevent the restraint device main body 10 from moving inadvertently toward the front of the vehicle.

Note that the side walls 18 and 20 have a seat plate 14 and a backrest 16.
Through-holes 100 are drilled corresponding to the connection parts with the restraining webbing 8 as necessary.
It is now possible to pass 0.

Next, the operation of this embodiment will be explained.

The restraint device main body 10 is placed on the seat base 22 as shown in FIG.
Attach it to the seat base 22 and seat back 24 by using the following steps. In this installation, the restraint webbing 80 is attached to the side walls 18 and 2 as shown by the imaginary line in FIG.
0 and into the slits 76, 78, the tongue plate 88 may be engaged with the buckle device 92.

As a result, the middle part of the restraining webbing 80 passes under the seat plate 14, and the seat plate 14
Since the child occupant seated on the seat does not come into contact with the restraining webbing 80, the sitting comfort is improved and a comfortable riding condition can be achieved.

After the child occupant 26 is seated on the seat plate 14, the continuous webbing 28, 30 is placed in front of the body, the buckle engaging protrusion 42A is passed through the elongated hole 50, and then engaged with the buckle device 54.
8.30 will be installed.

Before the child occupant 26 is seated, the crotch belt 32
If the crotch belt 32 is set forward in advance as shown by the imaginary line in FIG. 32 upright to the position shown by the solid line in FIG. 3, and the tongue plate 42 can be easily engaged.

Further, since the adult restraining webbing 80 does not cross in front of the child occupant 26, it does not hinder the child occupant's degree of freedom.

When attaching the restraint webbing 80 in this way, the restraint webbing 80 is used between the tongue plate 88 and the anchor plate 84, so if the restraint webbing 80 is a continuous three-point webbing as shown in FIG. However, the shoulder webbing between the tongue plate 88 and the through ring 94 does not hinder the attachment of the restraint device main body 10 in any way.

In the event of a vehicle emergency, the continuous webbings 28 and 30 restrain the child occupant 26, and the restraint device main body 10 is securely attached to the seat base 2 by the restraint webbing 80.
2. Since it is fixed to the seat back 24, the child occupant 26 can be restrained reliably.

In particular, the restraint webbing 80 has side walls 18 and 2.
Since the buckle device 92 is folded back at the upper end of the seat base 22, the buckle device 92 is securely restrained even in the state shown in FIG.

When the child occupant 26 exits the vehicle, the release button 74 may be pressed. That is, when the continuous webbings 28 and 30 are released, the child occupant 26
can get off the vehicle regardless of the restraint webbing 80, and the tongue plate 88 is attached to the buckle device 9.
2 may remain engaged. In this case, if the crotch belt 32 is brought forward again, it is easy to get off the vehicle. Child passenger 2 on the next ride
6 is seated on the seat plate 14, the buckle engaging protrusion 42A only needs to be engaged with the buckle device 54, and the operation is extremely simple.

In a vehicle in which the buckle device 92 is arranged below the upper end surface of the seat base 22 and the shoulder webbing and lap webbing of the restraining webbing 80 are separable, the wrap webbing can be locked by the buckle device 92 through the through hole 100. The restraint device main body 10 can also be attached by.

The slits 76 and 78 in the embodiment described above need only have a width narrow enough to allow the webbing 80 to pass through, and may be provided with a suitable cover or the like as the case may be.

Further, the crotch belt 32 has the webbing 5
In addition to putting it in the upright state or the forward-folding state by the tension created by 6, if the straight line H in FIG. It can also be placed in

Next, FIGS. 5 and 6 show a second embodiment of the present invention. In this embodiment, the cover 68 is configured to be foldable.

That is, a notch 102 is formed in the front surface of the cover 68 as shown in FIG. 6, and the portion left by this notch 102 serves as a flexible portion 104. As a result, the cover 68 has sufficient rigidity against axial force and bending in the front and back direction when standing up, and ensures insertion of the tongue plate. However, when the cover 68 is folded forward, the notch 102 portion is If the cover 68 is pushed in as shown, the oval cross section of the cover 68 becomes a flat plate. As a result, the rigidity of the flexible portion 104 in the front-rear direction is extremely reduced, and
If force is applied in this direction, the cover 68 will be folded forward as shown by the imaginary line in FIG. 5, making it convenient for children to get on and off the vehicle.

Next, FIG. 7 shows a third embodiment of the present invention. In the crotch belt 32 of this embodiment, a stay 108 integrally projects from the buckle device 54, and the tip of the stay 108 is pivotally supported on the front surface of the seat plate 14 via a pin 110. Further, a groove 112 into which the stay 108 can be press-fitted is formed on the front surface of the seat plate 14.

Therefore, in this embodiment, when a child passenger gets on and off, the crotch belt 32 is folded forward as shown in FIG. 7 to eliminate interference with the movement, and after the child is seated, the stay 108 is press-fitted into the groove 112 to stand up and engage the tongue plate. This makes it easy to operate.

It is also possible to provide a locking means, a moderation mechanism, etc. for stopping the crotch belt 32 in the forward position and the upright position.

[Effects of the invention] As explained above, in the child restraint device according to the invention, the crotch belt has a collapsible structure, so that
This has an excellent effect of not interfering with the movement of child occupants when getting on and off the vehicle.

[Brief explanation of the drawing]

Fig. 1 is a side view showing how the child restraint device according to the present invention is attached, Fig. 2 is a perspective view showing the child restraint device, and Fig. 3 is a sectional view of the crotch belt.
Figure 4 is a perspective view showing the attachment part of the crotch belt;
Fig. 5 is a sectional view corresponding to Fig. 3 showing the second embodiment of the present invention, Fig. 6 is a perspective view of the cover, and Fig. 7 is equivalent to Fig. 2 showing the third embodiment of the present invention. FIG. 10... Restraint device body, 12... Child restraint webbing, 14... Seat plate, 16... Back rest, 26
...Child passenger, 28...Continuous webbing, 30...
...Continuous webbing, 32...Kurotsuchi belt, 4
2...Tongue plate, 54...Batsukuru, 56
...Kurotsuchi webbing, 66...Cam surface, 70
... protrusion, 102 ... notch, 104 ... flexible part,
108...stay, 112...groove.

Claims (1)

[Scope of utility model registration request] A child restraint device in which a main body having a seat board for seating a child occupant, a backrest part, and a side wall part is mounted on a vehicle seat, and the main body is attached to the vehicle seat using restraint webbing provided on the vehicle, the main body being attached to the vehicle seat. A child restraint device characterized by a crotch belt that is installed upright and has a collapsible structure.