JP2001347860A - Seat belt fixing device for child seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt fixing device for a child seat capable of fastening the child seat installed backward firmly on a seat in easy constitution. SOLUTION: This device 10 is constituted of a main body case 11, a belt passage 13, a belt presser part 15 and a belt guide part 17. The belt passage 13 is formed on the one end side of an opening hole 11c of the main body case 11, and a lower end part is continuously connected to a belt insertion opening part 13a. In the meantime, the belt guide part 17 has a guide main body part 18 having an opening part 19 an upper part of which is opened and integrally formed from a flange part 11a. Addit Additionally, a guide surface 18a to engage a shoulder belt 7a is formed on the guide main body part 18, and the seat belt 7 is fixed on the child seat 1 by engaging the shoulder belt 7a with the guide surface 18a and pressurizing it with the belt presser part 15 after inserting it into the belt passage 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat seat belt fixing device for fixing a child seat to a vehicle seat with a vehicle seat belt.

[0002]

2. Description of the Related Art A child seat is mounted on a vehicle seat to protect a young person from obstacles, and is fixed to the seat with a vehicle seat belt. A securing device is attached to the seat belt, and the seat belt is configured to firmly restrain the restrained body by the securing device in the event of a strong impact such as a sudden brake, or in the event of a collision accident. I have. However, since the child seat carries a young person who can not be protected by himself, sufficient measures are necessary especially for safety, so that not only the securing device of the seat belt but also the child seat does not jump out of the seat. It was necessary to fix the child seat to the seat by firmly fixing the seat belt to the child seat.

Conventionally, a device for fixing a seat belt to a child seat very easily is disclosed in JP-A-11-111.
No. 93.

[0004]

However, when a child who uses a child seat, particularly a child who cannot sit down, is to be boarded, the child is faced backward with respect to the seat of the vehicle (the back of the child seat is positioned behind the seat. (If they are mounted facing each other). In the case of the device disclosed in the above publication, the child seat in which the seat portion of the child seat is rotatable with respect to the base body has a belt fixing device attached to the base body. While the child seat can be placed forward or rearward in a fixed state,
The cost was increased due to the complicated structure of the belt fixing device.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problem, and when the seat belt is mounted rearward on a vehicle seat, the seat belt can be manufactured at low cost and securely fixed to the child seat by an easy operation. It is an object of the present invention to provide a child seat seat belt fixing device that can be used.

[0006]

Means for Solving the Problems A seat belt fixing device for a child seat according to the present invention is configured as follows in order to solve the above-mentioned problems.
That is, a child seat seat belt fixing device for fixing the child seat to a vehicle seat by fixing a seat belt of a hung vehicle to the child seat, the main body case being attached to the child seat, and the main body case A belt passage formed therein and through which the seat belt is inserted, a belt pressing portion for fixing the seat belt inserted through the belt passage to the child seat, and a child seat formed integrally with the main body case to hold the child seat. A belt guide portion for applying tension to the seat belt to press against a seat, and a belt insertion opening for inserting the seat belt is formed at one end of the belt passage, The belt guide section is provided for inserting the seat belt from one end. And a guide surface for applying a pressing force to the seat side of the child seat to the seat belt when the child seat is arranged rearward with respect to the seat. It is characterized by the following.

[0007] Preferably, the belt insertion opening and the opening of the belt guide may be opened in opposite directions with respect to the main body case.

It is more preferable that the guide surface of the belt guide portion is formed so as to abut on the seat belt to be stretched by a protruding arc surface.

[0009]

According to the present invention, the seat belt fixing device for a child seat is constructed as described above, so that the child seat mounted rearwardly with respect to the seat portion of the vehicle is inserted into the belt passage. The seat belt is strongly pulled by the seat by pressing the seat belt against the guide surface of the belt guide section. In this state, if the seat belt inserted into the belt passage is pressed by the belt pressing section, the seat belt is Can be fixed. At this time, the seat belt can be inserted into the belt passage from the belt insertion opening formed at one end of the belt passage, and can be locked to the guide surface through the opening of the belt guide portion. The belt can be inserted into the child seat.

Therefore, for example, even when a child seat is used for a child who cannot sit in a sitting position, the child seat can be mounted rearward and the child seat can be firmly fixed to the seat, and the vehicle can be operated with peace of mind. be able to. In addition, since the belt guide portion is formed integrally with the main body case to reduce the number of components, the cost can be reduced with an easy configuration.

A belt insertion opening in the belt passage;
Since the opening of the belt holding part is opened in the opposite direction, the seat belt once passed through the belt passage is hard to come off from the main body case when inserting the seat belt, and the seat belt is turned into the child seat. The fixing operation can be facilitated.

Further, since the guide surface of the belt guide portion is formed in a protruding arc surface, the seat belt engaged with the guide surface can be slightly changed even if the inclination state of the child seat mounted backward is slightly changed. , Can always be pressed from the guide surface with a constant pressure.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. A seat belt fixing device (hereinafter, referred to as the present device) 10 for a child seat according to the embodiment.
As shown in FIG. 1, are mounted on upper portions of belt insertion holes 5 formed on both sides of the back portion 3 of the child seat 1, respectively. The child seat 1 is mounted on the seat 2 rearward with respect to the traveling direction, the shoulder belt 7a of the seat belt 7 is inserted through the device 10 mounted on the door side of the child seat 1, and the waist belt 7b is connected to the child seat 1.
The child seat 1 is fixed to the seat 2 in a state where the child seat 1 is inserted through the lower portions of the left and right belt insertion holes 5, 5. The device 10 is not limited to being mounted on the upper part of the belt insertion hole 5 as shown in FIG.
It may be mounted at any position.

As shown in FIGS. 2 to 4, the apparatus 10 has a main body case 11, a belt passage 13 formed in the center of the main body case 11 in FIG. 2 in a vertical direction, and opens and closes the belt passage 13. As described above, a belt holding portion 15 rotatably supported by the shaft 14 and a belt guide portion 17 disposed at a position facing the belt holding portion 15 are provided.

The main body case 11 has a substantially rectangular flange portion 11a mounted on the surface of the back portion 3 of the child seat 1.
And a fitting portion 1 formed in a direction protruding from the flange portion 11a into the belt insertion hole 5 and fitted into the belt insertion hole 5.
1b, and a rectangular opening hole 11 in the center.
c is formed. In FIG. 2, a guide body 18 of a belt guide portion 17 protruding upward from a lower portion of the flange portion 11a is integrally formed on the left side of the opening hole 11c. The shape of the main body case 11 is not limited to the illustrated example as long as the belt passage 13 and the belt guide portion 18 have an opening through which the seat belt 7 can be inserted.

The belt passage 13 is provided at one end of the opening hole 11c. The belt holding portion 15 is provided in the opening 11c.
Is inserted, and one end surface of the belt pressing portion 15 (the cam portion 15
In the open state of c), one end surface of the belt pressing portion 15 (the cam portion 1).
5c) and one end surface of the opening hole 11c (belt receiving surface 11d)
An elongated belt passage 13 is formed between the main body case 11 and the longitudinal end of the belt passage 13 (the lower end in FIG. 2) for inserting the seat belt 7 from the side end surface.
A belt insertion opening 13 a opened by notching a lower portion of the flange portion 11 a is formed at a position extending from the belt passage 13.

The belt holding portion 15 has a lever portion 15a formed in a long plate shape along the shaft 14 supported by the shaft, and a blade-like operation extending at one end of the lever portion 15a in a direction away from the shaft 14. And a cam portion 15c formed at one end of the lever portion 15a to open and close the belt passage 13 and press the seat belt 7 to be inserted. The cam portion 15c is formed as a pressing surface of the seat belt 7 by connecting two points having different radii from the axis of the shaft 14 and serves as a non-slip tooth portion 15d for the seat belt 7 inserted in the pressing surface. Are formed.

Further, on the belt passage 13 side of the protruding end of the operating portion 15b, a belt receiving surface 1
A belt stopper 15e protruding toward the 1d side is formed,
The belt stopper portion 1 prevents the seat belt 7 inserted through the belt passage 13 from falling below the belt passage 13.
5e.

Further, a torsion coil spring 16 for urging the cam portion 15c of the belt holding portion 15 toward the belt passage 13 so as to be located near the base of the operation portion 15b of the belt holding portion 15 below the shaft 14. Are arranged so as to fit on the shaft 14. The torsion coil spring 16 opens the belt passage 13 by manually rotating the operation portion 15b of the belt pressing portion 15 with respect to the shaft 14 so that the seat belt 7 can be inserted, and releases the hand from the operation portion 15b. Then, the belt presser 15 is rotated so that the seat belt 7 can be pressed by the cam 15c.

The belt guide 17 is provided with a guide body 18.
And an opening 19, and is formed in a U-shape with an upper opening including the flange 11 a of the main body case 11. The guide main body 18 is formed so as to stand up from the lower part of the flange part 11a of the main body case 11 with an opening 19 (see FIG. 3) therebetween on the left side of the belt passage 13 in FIG. (Left end side in FIG. 1) Guide surface 1 so as to draw a protruding arc surface from the upper end to the right.
8a are formed. A belt stopper 18b is formed above the guide surface 18a and is connected to the guide body 18 so as to protrude therefrom.

Therefore, the present device 10 is connected to the belt insertion hole 13.
The belt insertion hole 5 of the child seat 1 is opened so that the opening 19 of the belt guide 17 is opened upward.
When the belt holding portion 15 is in the open state, the seat belt 7 is attached to the belt insertion opening 13 from below the apparatus 10.
After the seat belt 7 is inserted into the belt passage 13 from the position a, the seat belt 7 is engaged with the guide surface 18 a of the guide body 18 through the opening 19 from above the belt guide 17.
The seat belt 7 is hung on the device 10.

Therefore, the belt insertion opening 13a of the belt passage 13 and the opening 19 of the belt guide 17 are opened in opposite directions to each other.
The seat belt 7 inserted into the inside of the seat 10 is hard to be detached from the device 10, and therefore, the work of attaching the seat belt 7 to the device 10 can be further facilitated.

Next, the apparatus 10 constructed as described above is used.
1 will be described with reference to FIG. 1 and FIGS.

As shown in FIG. 1, the present device 10 has belt insertion holes 5 on both sides of the back 3 of the child seat 1.
It is attached to. When the child seat 1 is mounted on the vehicle seat 2 facing backward, one of the two main devices 10 mounted on the window side of the child seat 1 (shown in FIG. 1). thing)
Is used, and the child seat 1 is mounted in a forward direction, the other device not shown in FIG. 1 is used.

With respect to the child seat 1 mounted rearward on the seat 2, the shoulder belt 7a of the seat belt 7 is inserted into the present device 10 of the child seat 1, and the waist belt 7b
Is inserted into the back portion of the child seat 1 so as to be engaged with the base portions of the belt insertion holes 5 on both sides, and a tongue (not shown) is hooked on the buckle.

When the shoulder belt 7a is inserted through the apparatus 10, as shown in FIG.
5b is rotated by hand counterclockwise around the shaft 14 in the figure to open the belt passage 13. In this state, the shoulder belt 7a is inserted into the belt passage 13 from the belt insertion opening 13a shown in FIG.

At the same time, the shoulder belt 7a is engaged with the guide surface 18a of the guide body 18 by inserting the opening 19 of the belt guide 17 from above while the shoulder belt 7a is slightly pulled and loosened. Shoulder belt 7a is guide surface 18
a, the guide surface 18a receives the tension of the shoulder belt 7a, and the belt guide portion 17 (this device 1)
0) is pushed to the seat 2 side.

When the shoulder belt 7a is inserted through the apparatus 10 and the tongue is hooked on the buckle, the shoulder belt 7a and the waist belt 7b are pulled to apply tension to the seat belt 7 and the child seat 1 to the seat 2 side. After that, hang it on the buckle. When the operation section 15b of the apparatus 10 is released in this state, the cam section 15c of the belt pressing section 15 presses and fixes the shoulder belt 7a by the urging force of the torsion coil spring 16. The child seat 1 pressed toward the seat 2 by the tension of the seat belt 7 is firmly fixed to the seat 2.

On the other hand, the guide surface 18 of the belt guide 17
The shoulder belt 7a locked to the guide surface 18a is formed into an arcuate guide surface 18a depending on the mounting state of the child seat 1.
The movement of the shoulder belt 7a is regulated by the belt stopper 18b of the belt body 18 so that the shoulder belt 7a does not come off the guide surface 18a. In addition, the shoulder belt 7a inserted into the belt passage 13 has a belt holding portion 15 so as not to be detached from the lower portion.
Is restricted by the belt stopper 15e formed at the bottom.

When the child seat 1 is worn forward with respect to the seat 2, the shoulder belt 7a is inserted into the belt passage 13 from the belt insertion opening 13a through the opening 19 of the belt guide 17. Then, the child seat 1 is pressed toward the seat 2 by pressing the belt receiving surface 11d. Therefore, in this case, the belt receiving surface 11d functions as a guide surface as a guide for locking the shoulder belt 7a and pressing it toward the seat.

As described above, the child seat 1 mounted rearward with respect to the vehicle seat 2 is provided with the belt passage 1.
3 is inserted into the belt guide 17.
The seat 2 is firmly towed by locking and pressing against the guide surface 18a of the
3, the seat belt 7 inserted into the belt holding portion 15
The seat belt 7 can be fixed to the child seat 1 by pressing with the cam portion 15c.

At this time, the seat belt 7 is inserted into the belt passage 13 from one of the opened belt insertion openings 13a, and the opening 1 is inserted from above the belt guide portion 17.
Since the seat belt 7 can be locked to the guide surface 18a through the seat 9, the seat belt 7 can be attached to the child seat 1 by an extremely easy operation.

Therefore, for example, even if a child who cannot sit in a sitting position is mounted on the child seat 1, the child seat 1 can be attached rearward and the child seat 1 can be firmly fixed to the seat 2, and the vehicle can be securely mounted. Driving can be performed. In addition, since the belt guide portion 17 is formed integrally with the main body case 11 to reduce the number of parts, the cost can be reduced with an easy configuration.

Further, since the belt insertion opening 13a of the belt passage 13 and the opening 19 of the belt guide 17 are formed in opposite directions, respectively, when the seat belt 1 is inserted, The seat belt 7 inserted through the belt passage 13 is unlikely to come off from the device 10, and the work of fixing the seat belt 7 to the child seat 1 can be facilitated.

The guide surface 18 of the belt guide 17
a is formed on the protruding arc surface, the guide surface 18
The seat belt 7 can always press the device 10 from the guide surface 18a with a constant pressure even if the tilting state of the rearwardly mounted child seat 1 slightly changes.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a child seat to which the present device according to one embodiment of the present invention is attached.

FIG. 2 is a front view showing the apparatus in FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2;

FIG. 5 is a simplified plan sectional view showing a state in which a seat belt is inserted into a belt passage.

FIG. 6 is a partial front view showing a state where a shoulder belt is attached to the apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Child seat 7 ... Seat belt 10 ... Seat belt fixing device (this device) 11 ... Main body case 13 ... Belt passage 13a ... Belt insertion opening 15 ... Belt holding part 17 ... Belt guide 18a ... Guide surface 19 ... Opening

Claims (3)

[Claims] 1. A child seat seat belt fixing device for fixing a child seat to a vehicle seat by fixing a seat belt of a hung vehicle to the child seat, comprising: a main body case mounted on the child seat; A belt passage formed in the main body case, through which the seat belt is inserted, a belt pressing portion for fixing the seat belt inserted through the belt passage to the child seat, and a belt press formed integrally with the main body case; A belt guide portion for applying tension to the seat belt to press the child seat against the seat, and a belt insertion opening for inserting the seat belt at one end of the belt passage. The belt guide section is formed to insert the seat belt from one end. An opening is formed for applying a pressing force to the seat belt toward the seat of the child seat when the child seat is arranged rearward with respect to the seat, the guide surface having a guide surface. A seat belt fixing device for a child seat. 2. The seatbelt for a child seat according to claim 1, wherein the belt insertion opening and the opening of the belt guide are opened in opposite directions with respect to the main body case. Fixing device. 3. The child seat according to claim 2, wherein the guide surface of the belt guide portion is formed so as to abut on the seat belt to be stretched by a projecting arc surface. Belt fixing device.