JP2000309241A - Child seat fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fix a child seat to a vehicle seat without damaging a vehicle seat belt. SOLUTION: On a seat portion 1 of a child seat, a belt-engagement surface 16 to be engaged with a seat belt is formed in an arc-like shape protruding forward. A belt fixing device 40 is provided on the belt-engagement surface 16 such that a seat belt is sandwiched by a first can portion formed on a lever and a belt receiver formed on a base.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat fixing device for fixing a pedestal portion to a vehicle seat in a child seat having a seat portion and a pedestal portion.

[0002]

2. Description of the Related Art In recent years, when a young person under the age of six gets into a car, it has become mandatory to mount a child safety seat to protect the safety of the young person. Improvements have been made to solve. In particular, the child seat must be securely fastened to the vehicle seat so that it does not jump out of the vehicle seat in the event of an impact. Usually, a child seat is configured to include a pedestal portion fixed to a vehicle seat and a seat portion mounted on the pedestal portion, so that the vehicle seat belt is fixed to the pedestal portion.

[0003] It has been quite difficult to firmly fix this child seat to all Japanese automobile seats. Therefore, generally, as shown in FIG. 8, a method of firmly fixing the child seat S1 to the seat C using the set fitting 50 has been adopted. According to this, the upper end portion of the seat belt B is attached to the vehicle body frame so as to be extendable and contractable, and the tongue plate 53 is attached to the intermediate portion so as to be adjustable in position. The set fitting 50 is arranged so that the hook portions 51 having a substantially E shape are opposed to each other, and each hook portion 51 is formed so as to lock the seat belt B. Then, after the seat belt B is hung on the child seat S1, the child seat S1 is attached to the seat C by engaging with the buckle 54 supported on the vehicle body floor. Then, the shoulder belt B1 and the waist belt B2 of the seat belt B on which the child seat S1 is hung are inserted so as to be engaged with the hook portions 51 of the set fitting 50, and are integrally clamped so that the seat belt B is squeezed. Stick.

[0004]

However, in the conventional method of fixing the child seat S1 to the seat C with the set fitting 50, the set fitting 50 is a single independent part.
When the child seat S1 is not used, the child seat S1 is simply placed at a predetermined place in the vehicle, and may be lost. Also, in actual use, it is necessary to kill the function of the securing device of the seat belt B for the shoulder belt B1 at the time of collision and to apply a strong tension to the shoulder belt B1, so that it takes time and force, and it is difficult to use. .

[0005] Further, the JIS standard stipulates that "the child seat has a structure that does not damage the seat belt of the automobile". It is necessary to construct a child seat to avoid it.

An object of the present invention is to solve the above-mentioned problem, and to provide a child seat seat fixing device which can be securely fixed to a vehicle seat by an easy operation and can be engaged without damaging a seat belt. With the goal.

[0007]

The child seat fixing device according to the present invention is configured as follows to solve the above-mentioned problems. That is, a child seat seat fixing device configured to have a seat portion on which a young person can be seated or laid down, and a pedestal portion on which the seat portion is mounted, wherein the pedestal portion has A belt engaging surface with which the vehicle seat belt is engaged is formed, the belt engaging surface has an arcuate surface protruding forward, and the belt engaging surface is engaged with the belt engaging surface. And a belt fixing device for locking the seat belt pressably.

[0008] Preferably, the belt fixing device is provided with a base inserted through the belt engaging surface, a cam member supported by the base and having a cam surface, and the cam mounted on the base. A slider approaching and separating from the member side;
A spring member for urging the slider toward the cam member,
With the rotation of the cam member, the movement of the slider to the cam member is regulated to make the seat belt non-fixed, and the regulation of the movement of the slider to the cam member is released to release the seat belt. It is even more preferable that it is characterized in that it is configured to be in a fixed state.

[0009] More preferably, the cam member is formed to have a first cam portion capable of pressing a seat belt and a second cam portion capable of engaging with the slider. Should be fine.

The cam surface of the first cam portion is formed on two surfaces at symmetrical positions so that the cam surface can be fixed in either the left or right insertion direction of the vehicle seat belt. It is even better as long as

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. In the following description, the child seat S in FIG. 1 shows one form of the child seat, and includes a pedestal portion 1 and a seat portion 2 detachably provided on the pedestal portion 1, and includes a seat portion. 2 has a seat portion 20 mounted on the pedestal portion 1 and a back portion 30 that can be tilted with respect to the seat portion 20. In addition, in order to explain the internal structure of the child seat S of this embodiment, the soft urethane foam for cushion, which should be originally formed, is omitted in the drawing.

As shown in FIGS. 2 to 4, the pedestal portion 1 has a seat wall portion 11 and a back wall portion 12 and is formed in a substantially L-shape in a side view so as to be attached to a vehicle seat in a forward direction. At the tip of the seat wall 11, two leg mounting seats 13 are provided which are formed higher than the seat wall 11, and are provided on the base portions of the seat wall 11 and the back wall 12 which are bent. Is provided with a base mounting seat portion 14 formed higher than the seat wall portion 11, and mounting engaging portions 15 for mounting the seat portion 2 are formed in each of the mounting seat portions 13 and 14 in a total of four places. Have been. In addition, the front end surface of the base mounting seat 14 is formed in an arc surface in a plan view so that the belt engaging surface 16 projects forward. This arc surface is formed assuming the abdomen of the human being pressed by the automobile seat belt. Therefore, the automobile seat belt can be hooked on the pedestal portion 1 without being locally bent, so that the pedestal is well balanced without being damaged. The part 1 can be fixed to a vehicle seat. As a result, it is possible to achieve the stipulation of the structure which does not damage the seat belt of the automobile in the JIS standard.

The belt engaging surface 16 is formed to be inclined rearward from below to above, and the seat belt B fixed to the seat engages so as to press the entire belt engaging surface 16 toward the seat. . The engaged seat belt B is fixed by a belt fixing device 40 arranged at the center of the belt engaging surface 16.

A belt guide 19 for guiding the seat belt B is attached to both ends of the base mounting seat 14,
The seat belt B is engaged with the belt engaging surface 16 through the lower surface of one belt guide 19.

As shown in FIGS. 5 to 7, the belt fixing device 40 includes a base 41, a lever 44 rotatably supported on a support pin 43 on the base 41, and a slider approaching and separating from a lower portion of the lever 44. 47 and a coil spring 48 for urging the slider 47 toward the lever 44.

The base 41 has a support portion 41a for supporting the lever 44, and a narrow belt receiving portion 41b rising upward from the support portion 41a so as to face the upper portion of the lever 44. A first cam portion 45 facing the slider 41b and a second cam portion 46 facing the slider 47
And The first cam portion 45 has cam surfaces 45a each having tooth portions at symmetrical positions so that the seat surface B can be fixed even when the seat belt B is inserted from either the left or right direction. The second cam portion 46 is formed in a substantially triangular shape having a cam surface 46a with which the slider 47 abuts at the rear position and a cam surface 46b with which the slider 47 abuts at the front position. An insertion passage 49 is formed between the first cam portion 45 and the belt engaging surface 16 so that the seat belt B can pass therethrough, and the belt receiving portion 41b of the base 41 is mounted inside the base mounting seat portion 14. At the same time, the leading end projects slightly from the belt engaging surface 16 toward the first cam portion 45 in order to fix the seat belt B, and the slider 47 is moved to the second position by a coil spring 48 disposed on the support portion 41a of the base 41. It is urged to the cam portion 46 side.

FIG. 6A shows a section taken along line VI-VI of FIG. 5, and FIG. 6B or FIG. 6C shows the counterclockwise or clockwise rotation of the first cam portion 46. FIG. 7A shows a cross section taken along the line VII-VII of FIG.
FIG. 7B or FIG. 7C shows the rotation of the second cam portion 47 in a counterclockwise or clockwise direction.

In a state where the seat belt B is not inserted,
The first cam portion 45 and the belt receiving portion 41b are located at positions separated from each other (FIG. 6A), and the cam surface 46a of the second cam portion 46 is provided.
Is at the rear position of the slider 47 and the contact surface 47 of the slider 47
a (see FIG. 7A). At this position of the slider 47, since the movement of the slider 47 toward the second cam portion 46 is restricted, the first cam portion 45 is not rotated.
Insertion path 4 between first cam portion 45 and belt receiving portion 41b
9 is formed.

When the seat belt B is inserted from one of the left and right directions and the lever 44 is rotated in either direction, the movement of the slider 47 toward the second cam portion 46 is released, and the contact of the slider 47 is released. The contact surface 47a is a coil spring 48
To rotate the second cam portion 46 to rotate the second cam portion 46.
It engages with the cam surface 46b of the cam portion 46 (FIG. 7B or 7C). Therefore, the lever 44 is rotated, and the seat belt B is gradually moved to any one of the cam surfaces 45a of the first cam portion 45.
And the seat belt B between itself and the belt receiving portion 41b.
(FIG. 6 (b) or (c)). Note that the cam surface 45a formed on the first cam portion 45 is formed so as to be more firmly fixed in the direction in which the seat belt B is tensioned, so that the cam surface 45a exerts the effect of preventing loosening, and the cam surface 45a Since the teeth are formed, the seat belt B can be more effectively prevented from loosening.

As shown in FIG. 1, the seat portion 20 of the seat portion 2 according to the present embodiment includes a bottom portion 21 attached to the pedestal portion 1, an armrest 22 erected from both side ends of the bottom portion 21, and a bottom portion 21. The buttocks support portion 23 which can be moved substantially horizontally in the upper direction
And a footrest 24 supported on the tip end of the buttocks support portion 23 so as to be tiltable by the buttocks support portion 23. Further, one end of the crotch belt 4 constituting the safety belt 3 is attached to the bottom portion 21 in a curved shape. The upright armrest 22 prevents a young person from jumping out of the seat 20. In addition, on the lower surface side of the seat portion 20, each of the mounting engagement portions 15 of the pedestal portion 1 described above.
The four pin portions (not shown) that can be attached to the camera are arranged so as to protrude downward.

As shown in FIG. 1, the back portion 30 of the seat portion 2 includes a backrest portion 31 for supporting the back of a young person, side rests 32 erected from both side edges of the backrest portion 31, and a backrest portion 31. Back part 31 at the head side tip of
And a headrest 33 supported so as to be tiltable. Further, the backrest portion 31 is formed with three belt insertion holes 31a through which the shoulder belt 5 is inserted, and the shoulder belt 5 is selectively inserted into any one of the belt insertion holes 31a according to the height of the child. You. One end of the shoulder belt 5 is fixed to the lower part of the back side of the backrest 31 through the belt insertion hole 31a, and the other end is bent by the crotch belt 4 to become the waist belt 6 and the back side of the backrest 31. To be fixed. The side rest 32 erected from the backrest portion 31 has a role of preventing a young person from jumping out of the child seat S.

A head protection pad 34 is rotatably mounted on the inner surface of both sides of the headrest 33.

When the child seat S is mounted on a vehicle seat, the pedestal 1 is first fixed to the vehicle seat. The pedestal portion 1 is arranged forward with respect to the seat (forward with respect to the traveling direction of the vehicle), and the seat belt B is inserted through the insertion passage 49 in a state where the insertion passage 49 of the belt fixing device 40 is formed. After the engagement with the engagement surface 16, the lever 44 of the belt fixing device 40 is
By rotating the seat belt B about the seat 3, the seat belt B is fixed so as not to be loosened. The operation of fixing the belt fixing device 40 to the seat belt B is as described above.

When the pedestal 1 is fixed to the seat, the seat 2 is mounted on the pedestal 1. In the child seat of this embodiment,
At this time, the pedestal portion 1 is tilted with the back portion 30 inclined at a predetermined angle and the seat portion 2 arranged in a predetermined direction with respect to the pedestal portion 1.
Attach to

In the present invention, the child seat is not limited to the above-described child seat, but may be similarly formed on another child seat if the seat has an arcuate engagement surface protruding forward from the base. Can be fixed. For example, the present invention can be applied to a child seat in which the pedestal portion and the seat portion are configured to be rotatable, and the same applies to a child seat in which the back portion of the seat portion is not configured to be tiltable relative to the seat portion. Can be fixed.

Further, the respective parts constituting the above-mentioned child seat fixing device are not limited to the above-described embodiment, but may include other embodiments as long as they are described in the appended claims. Things.

[0027]

According to the present invention, the child seat fixing device according to the first aspect of the present invention includes a seat portion on which a child can be seated or laid down, and a pedestal portion on which the seat portion is mounted. Wherein the pedestal portion has a belt engaging surface with which a vehicle seat belt is engaged, and the belt engaging surface has an arc surface that projects forward. A belt fixing device that locks the seat belt engaged with the belt engaging surface in a pressable manner is provided on the belt engaging surface. Therefore, when the vehicle seat belt is fastened, the arc-shaped belt engaging surface protruding forward can be used in a state similar to that of a normal passenger, so that the seat belt is forcibly applied locally. The seat belt can be securely fixed to the seat in a state of being hung without bending. Therefore, it is possible to achieve "wearing the child seat in a state where the seat belt is not damaged" defined in the JIS standard.

According to a second aspect of the present invention, in the child seat fixing device, the belt fixing device is provided through the belt engaging surface, a cam member supported by the base and having a cam surface; A slider disposed on the base and approaching and separating from the cam member; and a spring member for urging the slider toward the cam member. The rotation of the cam member causes the slider to move to the cam member. The movement of the slider is restricted so that the seat belt is not fixed, and the movement of the slider to the cam member is released so that the seat belt is fixed. In a state in which the seat belt is not inserted, the slider is separated from the cam member by the cam member, so that the seat belt can be inserted, and when the seat belt is inserted, the cam member is rotated. Accordingly, the cam member releases the engagement with the slider, so that the seat belt can be sandwiched and fixed between the cam member and the slider. Therefore, the seat belt which is hung can be easily fixed with one touch to prevent the seat belt from being loosened.

According to a third aspect of the present invention, the cam member has a first cam portion capable of pressing a seat belt and a second cam portion capable of engaging with the slider. I have. The slider is moved to the front position and the rear position by the engagement state of the slider with the second cam portion, so that the first cam portion can fix or unfix the seat belt to the seat belt. .
Therefore, the same effect as the second aspect can be achieved.

According to a fourth aspect of the present invention, the cam surface of the first cam portion is located at a symmetrical position so that the cam surface of the first cam portion can be fixed in either the left or right insertion direction of the vehicle seat belt. Because it is formed on two sides,
Even if the seat to which the child seat is mounted is located on the right side or on the left side, it can be used without attaching / detaching the belt fixing device.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a child seat.

FIG. 2 is a perspective view showing one embodiment of a seat fixing device for a pedestal portion in FIG. 1;

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is an enlarged view of a main part in FIG. 4;

6 is an operation view showing a section taken along line VI-VI in FIG. 5;

FIG. 7 is an operation view showing a section taken along line VII-VII in FIG. 5;

FIG. 8 is a simplified front view showing a conventional mode in which a child seat is fixed to a seat.

[Explanation of symbols]

 S ... Child seat 1 ... Pedestal part 2 ... Seat part 3 ... Safety belt 15 ... Attaching and engaging part 16 ... Belt engaging surface 20 ... Seat part 30 ... Back part 40 ... Belt fixing device 41 ... Base 41b ... Belt receiving part 43 ... Support Pin 44 Lever 45 First cam portion 45a Cam surface 46 Second cam portion 47 Slider 48 Coil spring 49 Insertion passage

Claims (4)

[Claims] 1. A seat on which a child can be seated or laid down, and a pedestal on which the seat is mounted.
A seat fixing device for a child seat configured to include: a belt engaging surface with which a vehicle seat belt is engaged is formed on the pedestal portion, and an arcuate surface on which the belt engaging surface protrudes forward. And a belt fixing device for locking the seat belt engaged with the belt engaging surface so as to be able to be pressed is provided on the belt engaging surface. 2. A base, wherein the belt fixing device is disposed through the belt engaging surface, a cam member supported by the base and having a cam surface, and the cam member disposed on the base. A slider that biases the slider toward the cam member, and restricts the movement of the slider to the cam member by rotating the cam member, thereby moving the seat belt. Let it be in a non-fixed state,
The child seat fixing device according to claim 1, wherein the movement of the slider to the cam member is released so that the seat belt is fixed. 3. The cam member according to claim 2, wherein the cam member includes a first cam portion capable of pressing a seat belt and a second cam portion capable of engaging with the slider. A seat fixing device for a child seat according to the above. 4. A cam surface of the first cam portion is formed on two surfaces at symmetrical positions so that the cam surface can be fixed in either the left or right insertion direction of the vehicle seat belt. 3. The seat fixing device for a child seat according to claim 2, wherein