JP2004114946A - Child seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a child seat capable of fixing a seat belt even when it is set on either of right and left seats only by using one belt fixing device to constrain the seat belt only in one direction. <P>SOLUTION: This child seat 1 is provided with a seat support 2 to be constrained on the seat 100 of a vehicle by the seat belts 111, 112 of the vehicle and a belt fixing device 40 mounted on the seat support 2, to allow movements of the seat belts 111, 112 inserted inside in one direction and to avoid the movements of the seat belts 111, 112 in the opposite direction. The belt fixing device 40 is mounted on the seat support 2 free to rotate so as to reverse the one direction concerning right and left directions of the vehicle. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a child seat provided with a belt fixing device for preventing a belt from loosening.
[0002]
[Prior art]
As means for fixing the child seat to the vehicle seat using the vehicle seat belt, the vehicle seat belt is sandwiched between a pair of cam-shaped members having irregularities on the surface, and the seat belt passes in the fastening direction. There is known a belt fixing device that fixes the seat belt and the base to each other by restricting the operation of the cam-shaped member so as to prevent the seat belt from passing in the opposite direction (the slack direction). .
[0003]
The above-mentioned belt fixing device can restrain the seat belt in only one direction. On the other hand, in a vehicle equipped with a general three-point seat belt, the direction in which the shoulder belt is fastened (the direction in which the seat is retracted) is opposite between when the child seat is installed in the right seat and when the child seat is installed in the left seat. become. Therefore, conventionally, two belt fixing devices are attached to one seat belt such that their restraining directions are opposite to each other (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP, 2002-120617, A
[Problems to be solved by the invention]
However, when a plurality of belt fixing devices are provided on a single child seat, the number of components and the number of assembling steps are increased, which causes a cost increase. The space required to provide the belt fixing device also increases, and the design constraints increase. If the child seat is attached to only one of the left and right rows, one belt fixing device is wasted.
[0006]
Therefore, the present invention provides a child seat capable of fixing a seat belt even when installed in either left or right seat by using only one belt fixing device that can restrain the seat belt in only one direction. Aim.
[0007]
[Means for Solving the Problems]
Hereinafter, the child seat of the present invention will be described. In addition, in order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated embodiment.
[0008]
The child seat (1, 60) of the present invention is provided with a seat support (2, 61) to be restrained on a vehicle seat (100) by a vehicle seat belt (111, 112), and attached to the seat support. And a belt fixing device (40) for allowing movement of the seatbelt inserted therein in one direction and preventing movement of the seatbelt in a direction opposite to the one direction, The above-mentioned problem is solved by the belt fixing device being rotatably attached to the seat support so that the one direction can be reversed with respect to the left-right direction of the vehicle.
[0009]
According to the child seat of the present invention, by rotating the belt fixing device, the correspondence between the left-right direction of the vehicle and the direction in which the belt of the belt fixing device restrains the belt can be switched. Therefore, regardless of whether the child seat is installed in the left or right seat, the child belt can be restrained to the vehicle seat by fixing the seat belt and the seat support using the same belt fixing device.
[0010]
The child seat according to the present invention includes a base (2) provided as the seat support portion, and a shell (4) provided so as to cover the base and attached to the base in a state where the base can be reclined. A bridge disposed on the base so as to straddle the shell in the left-right direction from the surface side while allowing the shell to recline, and both ends (51) are fixed to the base through the shell. (50) may be provided and the belt fixing device may be mounted on the bridge. According to such an attachment structure, even if the base is covered by the shell, the belt fixing device can be operated from the front surface side of the shell, so that the fastening operation and the loosening operation of the seat belt can be easily performed.
[0011]
A concave portion (4d) may be provided on the surface side of the shell, and the bridge and the belt fixing device may be accommodated in the concave portion. In this way, the concave portion can be opened and closed with an appropriate cover or lid, so that the belt fixing device is exposed to the surface of the shell only when necessary, and when unnecessary, the concave portion is closed to close the surface of the shell. Continuity can be ensured.
[0012]
The child seat (60) of the present invention includes a base (61) provided as the seat support portion, and a seat body (62) provided separably with respect to the base, and the belt fixing device (40). May be attached to a portion (65) of the base that is covered by the sheet body. For example, in an infant child seat called a baby seat, the seat body can be separated from the base in order to also use the seat body as a carry. With respect to the child seat having such a structure, if the seat body is separated, the belt fixing device is exposed, so that the seat belt can be tightened or loosened. Therefore, there is no need to separately adopt a structure for exposing the belt fixing device to the front side of the seat body, and the structure can be simplified.
[0013]
In the child seat of the present invention, it is preferable that the belt fixing device is disposed at the center in the left-right direction. If the belt fixing device is arranged at the center in the left-right direction, the seat belt can be equally fixed by the belt fixing device regardless of whether the seat belt is attached from the left or right side.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a child seat according to an embodiment of the present invention. The child seat 1 includes a base 2 and a seat body 3 supported by the base 2. The seat body 3 includes a hard resin shell 4 in which a seat 4a, a back 4b, and side walls 4c, 4c are integrally formed. Various accessories such as a belt harness, a belt adjusting mechanism, and a skin material are attached to the shell 4, but the illustration of the accessories is omitted.
[0015]
As shown in FIGS. 2 to 4, the base 2 includes a lower base 10 and an upper base 20. Each of the base portions 10 and 20 is a resin molded product. 4, the lower base portion 10 is formed in a wedge shape whose thickness increases from the front end 11 to the rear end 12. As shown in FIG. Concave portions 13a and 14a are formed in the centers of the upper and lower surfaces 13 and 14 of the lower base portion 10, respectively. The concave portion 13a on the upper surface 13 is recessed in a substantially circular shape, and a boss 21a provided on the lower surface 21 of the upper base portion 20 is fitted therein.
[0016]
A concave portion 22a is formed on the upper surface 22 of the upper base portion 20 so as to correspond to the boss 21a. A connecting bolt 15 is mounted on the concave portion 14a of the lower base portion 10. The connecting bolt 15 passes through the base portions 10 and 20 and is screwed into a nut 23 in the concave portion 22a. As a result, the upper and lower base portions 10 and 20 are connected to be pivotable about the connection bolt 15. Therefore, as shown in FIGS. 5A to 5C, the upper base portion 20 is turned with respect to the lower base portion 10 so that the upper base portion 20 is oriented in the front-rear direction of the vehicle (the left-right direction in FIG. 4). Can be inverted.
[0017]
In order to appropriately restrain the upper base portion 20 at the positions shown in FIGS. 5A and 5C, between the upper surface 13 of the lower base portion 10 and the lower surface 21 of the upper base portion 20, FIG. It is preferable to provide positioning means such as a boss and a recess which are fitted at the positions of (c) and (c), respectively. When such positioning means is provided, an appropriate margin is provided between the connecting bolt 15 and the nut 23, and the fitting of the positioning means can be released by lifting the upper base part 20 with respect to the lower base part 10. It is desirable to do. Further, it is desirable to mount a coil spring or the like in a compressed state between the connection bolt 15 and the bottom surface of the concave portion 14a to regulate play of the connection bolt 15 due to a margin between the connection bolt 15 and the nut 23.
[0018]
As is clear from FIGS. 4 and 5A to 5C, the upper surface 22 of the upper base portion 20 extends in the front-rear direction while drawing an arc that swells downward. A pair of left and right protruding ridges 24, 24 is formed at the center of the upper surface 22 in the left-right direction. The center line (turning center line) Q of the connecting bolt 15 is inclined with respect to the perpendicular V of the lower surface 14 of the lower base portion 10 such that the upper side thereof is shifted toward the front end 11 of the lower base portion 10. The thickness from the lower surface 21 of the upper base portion 20 to the upper surface of the ridge portion 24 (hereinafter referred to as the basic thickness of the upper base portion 20) increases as the distance from the turning center line Q increases. The change in the basic thickness of the upper base portion 20 is substantially symmetric in the front-rear direction (the left-right direction in FIG. 4) with respect to the turning center line Q, but may be asymmetric.
[0019]
The fixed rail 31 of the reclining mechanism 30 shown in FIG. 3 is fixed to the ridge 24 of the upper base 20. The fixed-side rail 31 is curved along the ridge portion 24, and a movable-side rail 32 is slidably mounted on the upper side thereof along the longitudinal direction (curved direction). The movable side rail 32 is restrained on the fixed side rail 31 by a suitable clamping means, for example, a clamping mechanism utilizing its own spring action. A lever 33 is attached to the movable rail 32. By lifting the tip of the lever 33, the restraint of the movable side rail 32 by the clamping means is released, and the movable side rail 32 can move along the fixed side rail 31. Further, the movable side rail 32 is fixed to the shell 4 as shown in FIG. Thereby, the shell 4 can be moved along the curvature of the fixed side rail 31 and the seat body 3 can be reclined.
[0020]
As shown in FIG. 6, the base 2 is in a state where the lower end 14 of the lower base 10 is in close contact with the seating surface 101 of the vehicle seat 100 and the rear end 12 of the lower base 10 is directed toward the seatback 102. It is attached to the seat 100. Then, by turning the upper base portion 20 with respect to the lower base portion 10, the orientation of the seat body 3 is set between the frontward posture shown in FIG. 7A and the rearward posture shown in FIG. Can be inverted.
[0021]
As described above, the thickness of the lower base portion 10 increases toward the rear end 12, and the turning center line Q of the upper base portion 20 is inclined with respect to the direction orthogonal to the lower surface 14 of the lower base portion 10. Therefore, as compared with the case where the turning center line Q is set to be parallel to the normal direction of the lower surface 14, the inclination of the back portion 4b from the vertical direction in the rearward posture (FIG. 7B) can be increased. That is, since the seat surface 101 of the vehicle generally has an upward slope from the rear end to the front end, if the turning center line Q is provided in parallel with the normal direction of the base lower surface 14, the vehicle will face forward. The back part 4b occurs more easily in the rearward posture than in the posture. On the other hand, when the turning center line Q is inclined as described above, the back portion 4b in the rearward posture is more greatly inclined in the horizontal direction. Further, if the reclining mechanism 30 is used, the back part 4b can be tilted down more greatly as shown by the imaginary line in FIG. 7B. Although it depends on the angle of the seating surface 101, it is desirable that the turning center line Q is inclined such that the upper side thereof is shifted more forward than the lower side in the state of attachment to the vehicle.
[0022]
Next, a configuration for fixing the child seat 1 to the seat 100 using the seat belt of the vehicle will be described. As shown in FIG. 1, a belt fixing device 40 is provided near the boundary between the seat 4a and the back 4b of the shell 4. However, the belt fixing device 40 is not fixed to the shell 4 but is supported by the upper base portion 20 via the bridge 50.
[0023]
FIG. 6 is a cross-sectional view showing a state where the bridge 50 is removed, and FIG. 8 is a perspective view corresponding thereto. As is apparent from these figures, a recess 4d for mounting a bridge is formed near the boundary between the seat portion 4a and the back portion 4b of the shell 4, and a belt through hole 4e through which a seat belt is inserted is formed in the side wall portion 4c. Is formed so as to communicate with the concave portion 4d. On the other hand, as is well shown in FIGS. 3 and 4, cutouts 26 are formed in the side walls 25, 25 of the upper surface 22 of the upper base 20. As shown in FIG. 6 and FIG. 7A, the position of the notch 26 of the side wall 25 and the position of the belt through hole 4 e coincide with each other when viewed from the left-right direction of the child seat 1.
[0024]
After the shell 4 and the upper base portion 20 are connected via the reclining mechanism 30, the bridge 50 is arranged in the recess 4d of the shell 4 as shown in FIG. Both ends 51, 51 of the bridge 50 are fitted into the cutouts 26 of the upper base 20 through the belt through holes 4e, so that the bridge 50 straddles the shell 4 and the side walls 25, 51 of the upper base 20. It is spanned between 25. Then, the bridge 50 and the upper base portion 20 are fixed to each other by fixing means (not shown) so that the both end portions 51 of the bridge 50 do not fall out of the cutout portions 26. In addition, in order to allow the shell 4 to recline with respect to the upper base portion 20 without being disturbed by the bridge 50, the length of the belt through hole 4e in the front-rear direction is sufficiently larger than that of the bridge 50.
[0025]
9 to 11 show details of the belt fixing device 40. FIG. As shown in these figures, the belt fixing device 40 includes a main body case 41, a clamper 43 provided at one end of the main body case 41 via a hinge 42 so as to be openable and closable, and a hinge 44 at the other end of the main body case 41. And a lock 45 provided to be openable and closable. A flap 46 is provided inside the clamper 43. As shown in FIG. 12, the flap 46 is attached to the clamper 43 such that the flap 46 can be rotated by a small angle about the pivot 47. The direction of the turning shaft 47 coincides with the longitudinal direction of the clamper 43. At the tip of the flap 46 and on the inner surface of the main body case 41, there are provided holding portions 48, 48 each having a saw-toothed unevenness.
[0026]
As shown in FIGS. 11 and 12, the shoulder belt 111 and the lap belt 112 constituting the vehicle seat belt are bundled and passed between the main body case 41 and the clamper 43, and the clamper 43 is lowered in that state. By closing the lock 45 as shown in FIG. 9, the belts 111 and 112 are sandwiched between the sandwiching portions 48. When the shoulder belt 111 is pulled up in the tightening direction (the direction of arrow F), the flap 46 rotates in the direction of arrow A in FIG. 12, and the gap between the holding portions 48 is slightly widened, so that the movement of the belts 111 and 112 is allowed. However, when the shoulder belt 111 attempts to move in the loosening direction (the direction of arrow R), the flap 46 moves in a direction to reduce the interval between the holding portions 48, and the belts 111 and 112 are sandwiched between the holding portions 48 and Is prevented from loosening. Thus, the belt fixing device 40 can restrict the belts 111 and 112 only in one direction. The hinge 45 connecting the lock 45 to the main body case 41 restrains the lock 45 at a closed position as shown in FIG. 9 with an appropriate force to prevent the clampers 43 from being opened due to tension on the belts 111 and 112. An opening prevention means is incorporated. Such an opening prevention means can be constituted using a cam, for example.
[0027]
As shown in FIG. 11, a mounting hole 49a is formed at the center in the longitudinal direction of the main body case 41, and positioning holes 49b, 49b are formed symmetrically with respect to the center of the mounting hole 49a on both sides of the mounting hole 49a. . As shown in FIG. 13, a circular shallow concave portion 52 is formed at the center of the bridge 50. The main body case 41 of the belt fixing device 40 is disposed in the concave portion 52, the fixing screw 53 is passed through the mounting hole 49 a, and the tip of the fixing screw 53 is screwed into the bridge 50 and fixed, whereby the belt fixing device 40 is fixed. It is attached to the bridge 50 so as to be rotatable around the screw 53. Thereby, the belt fixing device 40 is attached to the center in the left-right direction of the child seat 1 in a state in which the up-down direction can be reversed.
[0028]
On the bottom surface of the concave portion 52, there is provided a positioning projection 54 that fits into the positioning hole 49b when the main body case 41 is correctly attached in the direction of FIG. The protrusion 54 only needs to be able to position the body case 41 of the belt fixing device 40 at the position shown in FIG. 13 or at a position rotated by 180 °, and the protrusion height may be small. The attachment of the main body case 41 to the bridge 50 by the fixing screw 53 is performed with a margin so that the main body case 41 can move over the protrusion 54 and rotate between the main body case 41 and the bridge 50. Keep it. Even if there is such a margin, since the main body case 41 is pressed against the bridge 50 by tightening the belts 111 and 112, there is no possibility that the belt fixing device 40 will rotate with respect to the bridge 50 during use of the child seat 1. .
[0029]
According to the child seat 1 provided with the belt fixing device 40 as described above, as shown in FIG. 14, the belts 111 and 112 are passed through the belt fixing device 40 to sequentially close the clamper 43 and the lock 45. The base 2 can be firmly fixed to the seat 100 by pulling up the base 111 in the tightening direction. When the direction in which the shoulder belt 111 is tightened and the direction in which the belt fixing device 40 restrains the belts 111 and 112 match, the belt fixing device 40 is rotated 180 ° on the bridge 50 as shown by an arrow C in FIG. Thus, the base 2 can be fixed to the seat 100 by matching the direction in which the shoulder belt 111 is loosened with the direction in which the belt fixing device 40 restrains the belts 111 and 112. After the base 2 is fixed to the seat 100, the continuity of the surface of the shell 4 is ensured by closing the recess 4d with a cover (not shown).
[0030]
Note that the fixing of the base 2 by the belt fixing device 40 is effective only when the shell 4 is mounted in a forward facing posture as shown in FIG. When the shell 4 is mounted in a rearward posture as shown in FIG. 7B, the shell 4 is seated by using a belt through hole 4f (see FIG. 1) provided at the front end of the side wall 4c of the shell 4. What is necessary is just to fix to 100.
[0031]
The child seat 1 of the above embodiment has the following advantages. First, the base 2 is separated into a lower base part 10 and an upper base part 20, and the direction of the seat body 3 is reversed by turning the upper base part 20 in the front-rear direction. It is only necessary to arrange the reclining mechanism 30 between them. Therefore, restrictions on the design of the reclining mechanism 30 are small. The lower base 10 and the upper base 20 can be brought into contact over a wide range without being disturbed by the reclining mechanism 30. Therefore, even if the seat body 3 has a structure capable of turning, the support area between the fixed side and the movable side of the turning motion can be sufficiently ensured, and the stability of the turning portion can be improved.
[0032]
Since the single belt fixing device 40 can cope with the case where the shoulder belt 111 is fastened from either the left or right side, the number of the belt fixing devices 40 can be reduced and the cost can be reduced.
[0033]
As shown in FIG. 8, in the child seat 1 of the present embodiment, the head protection portion 4g of the side wall portion 4c is provided with a depth such that the head of the infant is almost hidden in order to improve the impact resistance performance in the event of a side collision. The armrest portion 4h of the side wall portion 4c is formed to be higher toward the front end 4i of the shell 4 so that the infant's knee is almost hidden.
[0034]
Further, as shown in FIG. 7B, when the shell 4 is mounted in the rearward posture, the front end 4i of the shell 4 is located substantially on the extension of the rear end 12 of the lower base portion 10. FIG. 7B shows a state in which the inclination of the shell 4 is set substantially at the center of the adjustment range by the reclining mechanism 30. When the front end 4i of the shell 4 is aligned with the rear end 12 of the base 2 in this manner, the contact range of the child seat 1 with the seat back 102 is expanded, and the stability of the child seat 1 is improved. In particular, since the height of the armrest portion 4h increases toward the front end 4i, the length of contact between the front end 4i and the seat back 102 can be increased, and high safety can be realized by a synergistic effect of these.
[0035]
The present invention is not limited to the embodiments described above, and may be implemented in various forms as long as they are included in the technical scope. For example, the mounting structure of the belt fixing device of the present invention is applicable to a child seat in which a base or a frame as a seat support and a seat main body are integrated without a pivoting mechanism or a reclining mechanism of the seat main body. .
[0036]
The child seat of the present invention includes a so-called baby seat for a newborn baby and an infant in its category. An embodiment in which the mounting structure of the belt fixing device of the present invention is applied to a baby seat will be described with reference to FIGS.
[0037]
In the baby seat 60 shown in FIG. 16, a seat body 62 is separated from a base 61 and can be used as a carry. As shown in FIG. 17, an enlarged portion 64 is formed on one end side of the base 61 so as to protrude above the attachment portion 63 to the seat body 62. An inclined surface in the middle of the enlarged portion 64 is used as a belt mounting surface 65, and the belt fixing device 40 is rotatably mounted at the center of the belt mounting surface 65 in the left-right direction. The belt mounting surface 65 is covered with the seat body 62 when the seat body 62 is mounted, and cannot be seen. However, when the seat body 62 is removed from the base 61, the belt mounting surface 65 can be exposed and operated. Note that the connection structure between the belt fixing device 40 and the base 61 may be the same as the example in FIG.
[0038]
Further, hooks 66, 66 for preventing the seat belts 111, 112 from shifting upward are formed on both sides of the belt fixing device 40. As shown in FIG. 16, when the baby seat 60 is mounted on the seat 100 such that the seat body 62 faces backward, the angle θ of the lap belt 112 hung on the belt mounting surface 65 with respect to the horizontal plane H is approximately 45 °. The inclination of the belt mounting surface 65 is adjusted so as to be as follows. Then, the rear end 67 of the enlarged portion 64 is abutted against the seat back 102. By providing the enlarged portion 64 and abutting the seat back 102 in this manner, the contact area between the baby seat 60 and the seat back 102 can be expanded in the vertical direction, and the stability of the baby seat 60 can be improved.
[0039]
In addition to the above, the mounting structure of the belt fixing device of the present invention can be applied to child seats having various structures.
[0040]
【The invention's effect】
As described above, according to the child seat of the present invention, by rotating the belt fixing device, the correspondence between the left-right direction of the vehicle and the direction in which the belt of the belt fixing device restrains the belt can be switched. Therefore, the child seat can be attached to the vehicle seat using the same belt fixing device regardless of whether the child seat is installed on the left or right seat.
[Brief description of the drawings]
FIG. 1 is a perspective view of a child seat according to an embodiment of the present invention.
FIG. 2 is a perspective view of a lower surface side of a base.
FIG. 3 is a perspective view of an upper surface side of a base.
FIG. 4 is a longitudinal sectional view of the base along the front-back direction.
FIG. 5 is a perspective view showing a turning operation of the upper base.
FIG. 6 is a longitudinal sectional view along a front-rear direction with a seat body attached to a base.
FIG. 7 is a diagram showing a state in which the direction of a seat body is changed back and forth.
FIG. 8 is a view showing a state where a belt fixing device and a bridge for attaching the belt fixing device are removed from FIG. 1;
FIG. 9 is a perspective view of a belt fixing device.
FIG. 10 is a perspective view of the belt fixing device with the clamper opened.
FIG. 11 is a perspective view showing the internal structure of the belt fixing device.
FIG. 12 is a view showing the operation of the belt fixing device.
FIG. 13 is an enlarged view showing the vicinity of a belt fixing device.
FIG. 14 is a perspective view showing a state where a vehicle seat belt is passed through a belt fixing device.
FIG. 15 is a perspective view showing a state in which the direction of the belt fixing device is being changed.
FIG. 16 is a diagram showing an embodiment of a baby seat in which a seat body can be separated from a base.
FIG. 17 is a perspective view of a base of the baby seat.
[Explanation of symbols]
1 Child seat 2 Base (seat support)
3 Seat Body 4 Shell 4a Shell Seat 4b Shell Back 4c Shell Side Walls 4e, 4f Belt Through Hole 4g Head Protector 4h Arm Rest 4i Shell Front End 10 Lower Base 11 Lower Base Front End 12 Lower Base Rear end 13 Upper surface of lower base portion 14 Lower surface of lower base portion 15 Connecting bolt 20 Upper base portion 21 Lower surface of upper base portion 22 Upper surface of upper base portion 23 Nut 30 Reclining mechanism 31 Fixed side rail 32 Movable side rail 40 Belt Fixing device 41 Body case 43 Arm 45 Lock 46 Flap 50 Bridge 60 Baby seat 61 Base (seat support)
62 seat body 64 projecting portion 65 belt mounting surface 100 vehicle seat 101 seat surface 102 seat back 111 shoulder belt 112 lap belt Q turning center line

Claims (5)

A seat support to be restrained on a seat of the vehicle by a seat belt of the vehicle, and a seat belt attached to the seat support, which allows the seat belt inserted therein to move in one direction, and is opposed to the one direction. A belt fixing device for preventing movement of the seat belt in a direction, wherein the belt fixing device is rotatably attached to the seat support portion so that the one direction can be reversed with respect to the left-right direction of the vehicle. A child seat characterized in that it is provided. A base provided as the seat support portion, and a shell provided to cover the base and attached to the base in a state where a reclining operation with respect to the base is possible,
A bridge fixed on the base is provided on the base so as to straddle the shell in the left-right direction from the surface side while allowing the shell to recline, and both ends are fixed to the base through the shell.
The child seat according to claim 1, wherein the belt fixing device is mounted on the bridge. The child seat according to claim 2, wherein a concave portion is provided on a front surface side of the shell, and the concave portion houses the bridge and the belt fixing device. A base provided as the seat support, and a seat body detachably provided with respect to the base, wherein the belt fixing device is attached to a portion of the base covered by the seat body. The child seat according to claim 1, characterized in that: The child seat according to any one of claims 1 to 4, wherein the belt fixing device is disposed at a center in the left-right direction.

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