JP2010012896A - Child safety seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a child safety seat free to stably mount on a seat for a vehicle by simple and easy mounting work. <P>SOLUTION: This child safety seat 10 has: a pedestal 50 having a base part 51 having a front surface 51a and a side surface 51b and an erected part 52 erected from the base part and mounted on the seat 1 for the vehicle; and a seat body 20 supported on the pedestal. The pedestal has a waist belt guide part 70 to guide a waist belt 6a, and the waist belt guide part has a front guide part 71 to extend on a front surface of the base part and a side guide part 72 continued to the front guide part and to extend on a side surface of the base part. The pedestal has a sideways guide member 75 including a sideways projecting part 76 to project sideways and an upward extending part 77 to extend upward from the sideways projecting part. The sideways projecting part forms at least a part of a lower edge of the side guide part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a child seat attached to a vehicle seat.

Various proposals have been made regarding child seats used when an infant is placed on a passenger car or the like. For example, Japanese Patent Application Laid-Open No. 2002-316565 discloses a child seat having a cradle attached to a vehicle seat and a seat body supported on the cradle.
JP 2002-316565 A

  In the child seat disclosed in Japanese Patent Laid-Open No. 2002-316565, the waist belt of the seat belt crosses the central portion of the cradle, and the cradle is attached to the vehicle seat only by the waist belt.

  However, in recent years, safety awareness has further increased, and it has been demanded that the child seat can be more stably attached to the vehicle seat. However, it is not preferable that the method for attaching the child seat to the vehicle seat becomes complicated.

  The present invention has been made in consideration of such points, and an object thereof is to provide a child seat that can be stably attached to a vehicle seat by a simple attachment operation.

  A child seat according to the present invention includes a base portion having a front surface, a side surface, and a bottom surface, an upright portion rising from the base portion, a pedestal attached to a vehicle seat, and a seat body supported on the pedestal. The cradle is a waist belt guide portion that guides a waist belt of a seat belt provided on a vehicle seat, the front guide portion extending on a front surface of the base portion, and continuous with the front guide portion. A waist belt guide portion having a side guide portion extending on a side surface of the base portion, and the pedestal includes a side protrusion portion protruding sideways from the side surface of the base portion, and a side protrusion portion. And a side guide member including an upward extension portion extending upward, and the side protrusion of the side guide member forms at least a part of a lower edge that defines the side guide portion. It is characterized by.

  In the child seat according to the present invention, the lower edge of the side guide portion may be located at an uppermost position along a normal direction to the bottom surface of the base portion in a portion defined by the side protruding portion. Good.

  Further, in the child seat according to the present invention, the lower edge of the side guide portion is extended from the front surface side of the base portion to the portion formed by the side protruding portion toward the bottom surface of the base portion. You may make it locate gradually upwards along a line direction.

  Furthermore, in the child seat according to the present invention, the side protrusion of the side guide member may form a portion of the lower edge of the side guide that is farthest from the front guide.

  Furthermore, in the child seat according to the present invention, the side guide portion is formed as a groove having at least a lower edge defined by a step, and a step surface forming the step is a portion of the side guide member forming a part of the lower edge. You may make it connect smoothly to the said side protrusion part.

  Furthermore, the position of the top portion of the upward extending portion along the normal direction to the bottom surface of the base portion is the method of the upper edge of the side guide portion in the portion where the lower edge is formed by the side protruding portion. The position may be the same as or lower than the position along the line direction.

  Furthermore, in the child seat according to the present invention, at least a part of the upper edge that defines the side guide portion from above may be formed of a folded material that protrudes laterally from the side surface of the base portion and further hangs downward. Good.

  Furthermore, in the child seat according to the present invention, the width from the upper edge to the lower edge that defines the side guide portion is close to a portion where the lower edge is formed by the side protrusion from the front side of the base portion. You may make it gradually narrow with you.

  The child seat can be stably attached to the vehicle seat without complicating the attaching operation.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 31 are views for explaining an embodiment of a child seat (child car seat) according to the present invention. Among these, FIG. 1 thru | or FIG. 5 etc. show the whole structure of a child seat. As shown in FIGS. 1 to 5, the child seat 10 according to the present embodiment includes a cradle 50 attached to a seat 1 of a vehicle (for example, an automobile), a reclining base 80 supported on the cradle 50, and reclining. The child seat body 11 includes the seat body 20 supported on the cradle 50 together with the base 80. As shown in FIG. 3, the child seat 10 further includes a support leg 100 that is detachably attached to the cradle 50 of the child seat body 11. The support leg 100 extends to the floor surface 3 of the vehicle that supports the vehicle seat 1 and supports the front portion of the child seat body 11 (the cradle 50) from below.

  As shown in FIG. 3, the pedestal 50 stands on the seat 51a of the vehicle seat 1 and rises from the base 51, and as shown in FIG. And an upright portion 52 that comes to face the back portion 1b. Among these, the base 51 includes a front surface 51a, a side surface (lateral surface) 51b, and a bottom surface 51c (see FIG. 1 and the like). On the other hand, the seat body 20 includes a seat portion 21 supported on the base portion 51 so as to be slidable with respect to the base portion 51 of the cradle 50 and a backrest portion 22 extending from the seat portion 21. .

  As shown in FIG. 4, the reclining base 80 is slidable with respect to the cradle 50 along the direction sd along the vertical plane. The seat body 20 is slidable with respect to the cradle 50 along the direction sd along the vertical plane together with the reclining base 80. When the sheet body 20 is slid with respect to the cradle 50, the inclination angle of the sheet body with respect to the cradle 50 changes as shown in FIG. That is, the seat body 20 on which the infant sits can be reclined so as to face forward.

  Further, as shown in FIG. 5, the seat main body 20 is rotatable with respect to the reclining base 80 and the cradle 50 around a rotation axis rd along the vertical plane. Then, by rotating the seat body 20 with respect to the cradle 50, as shown in FIG. 5, the infant can be placed (sit down or laid down) on the child seat 10 so that the infant faces rearward. Hereinafter, this state of the sheet main body 20 indicated by a solid line in FIG. 5 is also referred to as a “rear facing state” of the sheet main body, and the state of the sheet main body 20 indicated by a two-dot chain line in FIG. Also referred to as “forward-looking state”.

  In the present specification, the terms “front” and “rear” with respect to the child seat mean “front” and “rear” based on normal driving of the vehicle unless otherwise specified ( 2 and 3).

  In the following, first, the child seat body 11 will be generally described, and then each part of the child seat 10 will be further described.

[Overall description of the child seat body]
First, the seat body 20 of the child seat 10 (child seat body 11) will be described in detail overall. As described above, the seat body 20 includes the seat portion 21 and the backrest portion 22, and the seat portion 21 and the backrest portion 22 are formed of a frame material and a cushion material attached on the frame material. . As shown in FIGS. 6 and 7, the seat body 20 further includes a disk 24 provided at the lower portion of the seat portion 21 and a guide piece 25 protruding downward from the disk 24. The disk 24 has a rail 24a extending in a substantially circumferential shape. The rail 24a is provided with a notch 24b on the rear side with respect to the infant seated on the seat body 20. That is, the rail 24a is interrupted on the rear side. The guide piece 25 has a pair of flat side surfaces 25a extending in parallel in the front-rear direction and an arcuate side surface 25b connecting the front side and the rear side of the pair of flat side surfaces 25a with the infant seated on the seat body 20 as a reference. is doing. The arc-shaped side surface 25 b is formed as a part of the cylindrical surface, and has an arc-shaped contour in the cross section of the guide piece 25.

  Further, as shown in FIGS. 1 and 6, the backrest portion 22 is provided with a connection guide 27 that protrudes rearward with respect to the infant seated on the seat body 20. The connection guide 27 includes a base end portion 27a protruding from the backrest portion 22 and a base end portion 27a in a cross section orthogonal to the movement path sd (see FIG. 4) of the connection guide 27 when the seat body 20 slides. And a bent portion 27b that bends and further extends. That is, the connection guide is formed in a bowl shape. As can be understood from FIG. 2, the direction in which the base end portion 27 a of the connection guide 27 extends and the direction in which the bent portion 27 b of the connection guide 27 extends are substantially the same in a cross section orthogonal to the movement path sd of the connection guide 27. Orthogonal. The connection guide 27 passes through the groove 53 formed in the standing portion 52 of the receiving base 50 when the seat body 20 slides. Further, as shown in FIG. 6 and the like, a slit (elongated through hole) 27c extending along the movement path sd of the connection guide 27 is formed in the base end portion 27a. The groove 53 formed in the cradle 50 will be described in detail later.

  As shown in FIG. 2, the back support portion 22 has a connection guide 27 on one side in the lateral direction and a connection guide on the other side in the lateral direction that are spaced apart in the lateral direction (width direction) perpendicular to the front-rear direction. 27 is provided. A bent portion 27b of one side connection guide (for example, the right side connection guide in FIG. 2) 27 bends from the base end portion 27a toward one side in the horizontal direction (for example, the right side in FIG. 2). The bent portion 27b of the connection guide 27 on the other side is bent from the base end portion 27a toward the other side in the lateral direction. In other words, the bent portions 27b of the pair of connection guides 27 extend from the respective base end portions 27a in the direction away from each other along the lateral direction.

  The seat body 20 incorporates a pulling mechanism 30 and an operation amount adjusting mechanism 40 that are used when the seat body 20 is slid and rotated with respect to the cradle 50. As shown in FIGS. 6 and 7, the pulling mechanism 30 has a pair of projecting members 32 projecting downward from the bottom surface 25 c of the guide piece 25, and an operation member 31 connected to the projecting member 32. . In the present embodiment, the operation member 31 is formed as a swingable operation lever, and the projecting member 32 is formed as a pin (lock pin) capable of moving forward and backward from the guide piece 25. By operating this operation member (operation lever) 31, the protrusion amount of the protrusion member 32 from the bottom surface 25c of the guide piece 25 can be adjusted. In particular, in the present embodiment, the operation member 31 is connected to the projecting member 32 via a link mechanism, and the retracting amount of the projecting member 32 is configured to be interlocked with the operation amount of the operating member 31. On the other hand, the operation amount adjusting mechanism 40 is a mechanism for restricting the operation amount (movement amount, swing amount) of the operation member 31 by contacting the operation member 31 of the pulling mechanism 30. The pulling mechanism 30 and the operation amount adjusting mechanism 40 will be described in detail later.

  Next, the reclining base 80 will be further described. As shown in FIG. 10 and the like, the relining base 80 is mounted around the disk 24 of the seat body 20 and is disposed around the disk 24 and the guide piece 25 of the seat body 20. The relining base 80 is slidably attached to the cradle 50. As a result, as shown in FIG. 4 and the like, the sheet body 20 slides with respect to the cradle 50 together with the relining base 80.

  In addition, as shown in FIGS. 6, 10, and 11, the relining base 80 has a collar portion 81 that engages with the rail 24 a of the disk 24. The collar portion 81 extends in an arc shape. The rail 24 a of the disc 24 is guided to the flange portion 81 of the relining base 80, so that the seat body 20 including the disc 24 can rotate with respect to the reclining base 80. As a result, the seat body 20 can rotate with respect to the cradle 50 to which the reclining base 80 is attached. As shown in FIGS. 6 and 10, the collar portion 81 is formed with a notch 81a on the rear side. As shown in FIGS. 10 and 11, when the seat body 20 is in the forward-facing state, the notch 81 a of the collar portion 81 and the notch 24 b of the rail 24 a of the disk 24 face each other.

  Further, as shown in FIG. 6, the reclining base 80 has a skirt portion 82 that extends downward toward the cradle 50. As shown in FIG. 11, when the reclining base 80 is attached to the cradle 50, the skirt portion 82 is positioned in a recess formed in the base 51 of the cradle 50.

  Next, the cradle 50 will be described in detail. As shown in FIG. 3, the cradle 50 is attached to the vehicle seat 1 using a vehicle seat belt 5 having a waist belt 6 a and a shoulder belt 6 b. Therefore, a lock-off device 79 for holding the shoulder belt 6b of the seat belt 5 is provided on the standing portion 52 of the cradle 50. Two lock-off devices 79 are provided apart from each other in the lateral direction, and can correspond to two inclination directions of the shoulder belt 6b. As shown in FIG. 3, the shoulder belt 6 b sandwiched between the lock-off devices 79 obliquely crosses the standing portion 52 of the cradle 50. The cradle 50 also has a waist belt guide portion 70 for guiding the waist belt 6a. The waist belt guide 70 will be described in detail later.

  As shown in FIGS. 8 and 9, a guide groove 55 extending along the front-rear direction is formed in the base 51 of the cradle 50 at the center in the width direction (lateral direction). The guide groove 55 includes a reclining guide portion 55a formed of grooves extending in the front-rear direction having side walls parallel to each other, and a rotation guide portion 55b formed of a cylindrical recessed portion provided at a rear end portion of the reclining guide portion 55a. Contains. The reclining guide portion 55a is engaged with the flat side surface 25a of the guide piece 25 of the seat body 20, and the width between the pair of side walls is determined so that the seat body 20 can slide relative to the cradle 50. ing. Further, the rotation guide portion 55b is engaged with the arcuate side surface 25b of the guide piece 25 of the seat body 20, and the diameter of the cylindrical recess is determined so that the seat body 20 can rotate with respect to the cradle 50. ing. That is, the rotation axis rd of the seat body 20 with respect to the cradle 50 is defined by the rotation guide portion 55b.

  In such a configuration, the sheet body 20 can slide with respect to the cradle 50 when the guide piece 25 of the sheet body 20 in the forward-facing state moves in the guide groove 55. Further, when the guide piece 25 of the sheet main body 20 is positioned in the rotation guide portion 55 b of the guide groove 55, the sheet main body 20 can rotate with respect to the cradle 50. When the sheet body 20 slides or rotates with respect to the cradle 50, the bottom surface 25c of the guide piece 25 of the sheet body 20 slides on the bottom surface 55c of the guide groove 55. Similarly, when the reclining base 80 slides relative to the cradle 50 together with the seat body 20, at least a part of the skirt portion 82 of the reclining base 80 moves in the guide groove 55.

As shown in FIGS. 8 and 9, the reclining guide portion 55 a of the guide groove 55 has a plurality of pairs of left and right lock holes 56 a that receive the pair of protruding members 32 of the seat body 20 described above in the front-rear direction (in the drawing). Are provided in 3 pairs). The rotation guide portion 55b is provided with a pair of left and right rotation position lock holes 56b that receive the pair of projecting members 32. As shown in FIG. 8, the distance between the pair of left and right lock holes 56a and the distance between the pair of left and right rotation position lock holes 56b are the same, but the same in opposite directions with respect to the longitudinal axis cd passing through the center in the width direction. It is offset by the dimension. That is, the interval between the locking hole 56a of the left and longitudinal axis cd is are set to be intervals and equidistant l ₁ of the longitudinal axis cd and right rotational position lock hole 56b. The distance between the longitudinal axis cd and the right locking hole 56a has a spacing and equidistant l ₂ between the rotational position locking holes 56b of the left and longitudinal axis cd.

  Corresponding to the offset of the lock hole 56a and the rotation position lock hole 56b, the pair of protruding members 32 of the seat body 20 described above are also offset with respect to the longitudinal axis cd when supported on the cradle 50. It is comprised so that it may be arrange | positioned in a position. As a result, the pair of projecting members 32 are engaged in the lock hole 56a and the seat body 20 is held in a forward-facing state. Further, the pair of projecting members 32 are engaged in the rotation position lock hole 56a and the sheet main body 20 is held in an inverted state (rearward state) indicated by a solid line in FIG. In other words, in the present embodiment, within the slidable range of the seat body 20, there are three reclining positions where the seat body 20 is maintained at different inclination angles, and the seat body 20 is rotatable with respect to the cradle 50. And the rotational position to be included.

  8 and 9, the surface 57a in the guide groove 55 of the cradle 50 in which each lock hole 56a is formed and the guide groove in the cradle 50 in which the rotation position lock hole 56b is formed. A step is formed between the inner surface 55 and the surface 55 c. In the guide groove 55, the bottom surface of the reclining guide portion 55a and the bottom surface of the rotation guide portion 55b are formed as the same continuous surface 55c. However, a recess 57 is formed on the same continuous surface 55 c, and each lock hole 55 is formed on the bottom surface 57 a of the recess 57. Therefore, a level difference equal to the height of the recess 57 is formed between the surface 57a on which each lock hole 56a is formed and the surface 55c on which the rotational position lock hole 56b is formed.

  Further, as shown in FIGS. 8 to 11, a collar portion 82 of the reclining base 80 is provided below the standing portion 12 of the cradle 50 when the guide piece 25 of the seat body 20 moves onto the rotation guide portion 55 b. And a rotation guide 58 that is arranged on substantially the same circumference. When the seat body 20 in the rotational position rotates, the rail 24a formed on the disk 24 of the seat body 20 is engaged not only by the collar portion 82 of the reclining base 80 but also by the rotation guide 58. As a result, the sheet body 20 can be smoothly rotated at the rotation position.

  Incidentally, as described above, the standing portion 52 of the cradle 50 is formed with the groove 53 that receives the connection guide 27 provided in the seat body 20. The sheet main body 20 is provided with a connection guide 27 on one side (for example, a connection guide on the right side in FIG. 2) and a connection guide 27 on the other side that are spaced apart in the lateral direction. Then, as shown in FIG. 2, one side groove 53 (for example, the right side groove in FIG. 2) that engages with the one side connection guide 27 and the other side that engages with the other side connection guide 27. Are formed in the standing portion 52 so as to be spaced apart from each other in the lateral direction. As can be understood from FIG. 2, the groove 53 is bent and extended corresponding to the shape of the connection guide 27 in a cross section orthogonal to the longitudinal direction (direction along the movement path sd of the connection guide 27).

  As shown in FIGS. 8 and 9, both the portion of the groove 53 that accommodates the base end portion 27a and the portion of the groove 53 that accommodates the bent portion 27b in the end surface (upper end surface) 52a facing upward from the upright portion 52. Is open. As a result, for example, as shown in FIG. 1, a part of the upper portion of the connection guide 27 of the seat main body 20 that passes through the groove 53 of the cradle 50 passes through the opening in the upper end surface 52 a of the upright portion 52, 53 can extend outside. Furthermore, as shown by a two-dot chain line in FIG. 5, when the sheet main body 20 is slid to the rotational position, the connection guide 27 of the sheet main body 20 can come out of the groove 53. Thereby, the engagement between the connection guide 27 and the groove 53 is released, and the sheet main body 20 can be rotated with respect to the cradle 50.

  Note that the entire portion of the groove 53 is also open on the surface (front surface) 52b facing the front of the standing portion 52. As a result, in the present embodiment, for example, as shown in FIG. 1, the connection guide 27 can extend to the outside of the groove 53 at both end portions thereof.

  As shown in FIG. 8 and the like, each groove 53 is provided with a connection pin 60 extending in the lateral direction (width direction) orthogonal to the front-rear direction. The connection 60 pin passes through the slit 27 c formed in the base end portion 27 a of the connection guide 27 that passes through the groove 53. Further, the connection pin 60 is supported so as to be movable along the lateral direction, and a position that penetrates the slit 27 c formed in the proximal end portion 27 a of the connection guide 27 and a position that is drawn into the standing portion 52. Can take.

  As shown in FIG. 11, the first cam 61 is provided so as to protrude into the guide groove 55 from an opening formed at a position further rearward than the rotation guide portion 55b, and the second cam 62 is reclining. It is provided so as to protrude into the guide groove 55 from an opening formed in the guide portion 55a. The first cam 61 and the second cam 62 are connected by a link so that when one of the cams stands and the leading end protrudes on the guide groove 55, the other cam is drawn from the guide groove 55. It is connected. The first cam 61 is further connected to a bell crank 63 provided in the cradle 50 via a link.

  The first cam 61 is biased by a tension spring 64 so as to protrude into the guide groove 55. The first cam 61 is pressed by the skirt portion 82 of the reclining base 80 and pushed into the guide groove 55 when the guide piece 25 of the seat body 20 moves into the rotation guide portion 55 b. On the other hand, the second cam 62 is pressed by the skirt portion 82 of the reclining base 80 and pushed into the guide groove 55 when the guide piece 25 of the seat body 20 moves to the reclining guide portion 55a. .

  As shown in FIG. 12, an operating arm 65 having two arm portions is rotatably provided in the standing portion 12 of the cradle 50. Slots 65a and 65b are formed in each arm. One long hole 65 a is connected to the bell crank 63 via a link, and the other long hole 65 b is connected to the connection pin 60. Each operation arm 65 is configured to rotate when the bell crank 63 swings and pulls down the link, and pulls the connection pin 60 into the upright portion 52 of the cradle 50.

  As described above, the support leg 100 is detachably attached to the cradle 50. The configuration related to the support leg 100 of the cradle 50 will be described in detail later together with the support leg 100.

  In the child seat 10 (child seat body 11) having the above-described configuration, the seat body 20 is moved from one reclining position to another reclining position by lifting the protruding member (lock pin) 32 from the lock hole 56a of the receiving base 50. Can be slid to a position. At this time, due to the biasing force of the tension spring 64, the connection pin 60 extends into the groove 53 through the link mechanism and passes through the slit 27 c of the connection guide 27 passing through the groove 53. As a result, the guide piece 25 of the seat body 20 is guided to the guide groove 55 of the cradle 50 and the connection guide 27 of the seat body 20 is guided to the groove 53 and the connection pin of the cradle 50. 20 can be slid smoothly with respect to the cradle 50. In particular, in the present embodiment, the connection guide 27 has not only the base end portion 27 a but also a bent portion 27 b that bends and extends from the base end portion 27 a, and the connection guide 27 is a predetermined in the groove 53. It will be arranged at the position. Thereby, sliding with respect to the cradle 50 of the sheet | seat main body 20 can be made smoother and more stable. In this way, the inclination angle of the backrest 22 of the seat body 20 with respect to the cradle 50 can be changed stably and smoothly.

  Next, when the protruding member (lock pin) 32 is pulled up from the lock hole 56a of the pedestal 50 and is slid from the reclining position to the rotational position, the reclining base 80 that slides with the seat body 20 with respect to the pedestal 50 is shown. The skirt portion 82 comes into contact with and presses the first cam 61 protruding into the guide groove 55. As a result, when the seat body 20 reaches the rotational position, the swinging motion of the first cam 61 is transmitted to the connection pin 60 via the bell crank 63, the operating arm 65 and the link, and the connection pin 60 is It is drawn into the upright portion 52 of the cradle 50. Thus, in conjunction with the movement of the sheet body 20 to the rotational position, the connection guide 27 can come out of the groove 53 as shown by a two-dot chain line in FIG. Since the connection guide 27 is no longer constrained in the groove 53, the sheet body 20 that has moved to the rotation position can be rotated about the rotation axis rd.

  Further, as described above, each pair of the lock holes 56a, the rotation position lock hole 56b, and the protruding member 32 are offset with respect to the longitudinal axis cd passing through the lateral center. The projecting member 32 does not enter the rotational position lock hole 56b until the sheet body 20 that has slid to the rotational position is reversed and is in a rearward state. For this reason, the sheet body 20 that has slid to the rotational position can be easily and reliably rotated until the sheet body 20 is in the rearward state.

  When the protruding member (lock pin) 32 is pulled up from the lock hole 56a of the pedestal 50 to reverse the seat body 20 in the rearward state and further move to the reclining position, the connection guide 27 It enters the groove 53 again from the end face 52a facing upward. Since the connection guide 27 has not only the base end portion 27 a but also a bent portion 27 b that bends and extends from the base end portion 27 a, the connection guide 27 is guided to a predetermined position in the groove 53. Become. At this time, the first cam 61 protrudes into the guide groove 55 and the connection pin 60 protrudes into the groove 53 by urging by the tension spring 64. Since the connection guide 27 having the bent portion 27 b is located at a predetermined position in the groove 53, the connection pin 60 smoothly passes through the slit 27 c of the connection guide 27.

  As shown in FIG. 13, in the present embodiment, the child seat 10 (child seat 11) further includes a cover 85 that can be attached to and detached from the upright portion 52. The cover 85 covers the upright portion 52 exposed by the movement of the backrest portion 22 when the seat body 20 rotates on the cradle 50. That is, the cover 85 is attached to the standing portion 52 of the child seat 10 (the child seat 11) in the rearward state. As shown in FIG. 14, attachment tools 86 a and 86 b are provided at each end of the back surface of the cover 85. In addition, attachments (not shown) corresponding to these attachments 86 a and 86 b are provided on the standing portion 52 of the cradle 50. Then, the cover 85 is detachably attached to the upright portion 52 through these attachments 86a and 86b.

  As shown in the figure, the cover 85 covers an end surface 52 a facing upward from the upright portion 52 and a surface 52 b facing forward from the upright portion 52. As described above, the groove 53 is opened in the upper end surface 52 a of the standing portion 52. In addition, the other end of the groove 53 is opened on the front surface 52b of the standing portion 52, and a lock-off device 79 is provided. Further, the shoulder belt 6b of the seat belt 5 sandwiched between the lock-off devices 79 is slanted. Crossing. The cover 85 covers the groove 53, the lock-off device 79, and the shoulder belt 6b. That is, it is possible to prevent the groove 53, the lock-off device 79, and the shoulder belt 6b from being exposed at a position facing the infant placed on the child seat 10 in the rearward state. According to such a cover 85, it is possible to effectively prevent an object or the like from being caught on the opened groove 53, the lock-off device 79, the shoulder belt 6b, and the like. Moreover, it is excellent in design and also increases the sense of security when using the child seat 10.

  Furthermore, as shown in FIG. 14, the cover 85 is a region on the surface side exposed when attached to the standing portion 52 and is positioned on the end surface 52 a when attached to the standing portion 52. In one area, the sheet-like member 87 on one side and the sheet-like member 87 on the other side are provided separately in the lateral direction. A sheet-like member on one side (for example, the sheet-like member on the right side in FIG. 14) has a rectangular outline, and has three edges (for example, the upper side) other than one side in the lateral direction (for example, the right side). Edge, lower edge and left edge) are sewn to the body portion. Similarly, the sheet-like member 87 on the other side has a rectangular outline, and three edges other than the other side in the lateral direction are sewn to the main body portion. As a result, as shown in FIG. 14, the sheet-like member 87 on one side opens to one side in the horizontal direction, and the sheet-like member 87 on the other side opens to the other side in the horizontal direction.

  Such a sheet-like member 87 has a function of notifying the user that the cover 85 has been forgotten to be removed. Specifically, as shown in FIG. 15, when the seat body 20 is rotated from the rearward state toward the frontward state without removing the cover 85, the connection guide 27 on the other side becomes the sheet-like member 87 on one side. The connection guide 27 on one side is hooked on the opened portion 87a of the sheet-like member 87 on the other side. In addition, this function of the sheet-like member 87 can be more effectively exhibited when the sheet-like member 87 is formed from a thick fabric. According to the cover 85 having such a sheet-like member 87, it is possible to prevent the sheet main body 20 from being slid while the cover 85 is attached to the upright portion 52. Can be effectively prevented, in particular, the connection guide 27 and the cushion material.

[Pull-up mechanism and operation amount adjustment mechanism]
Next, the pulling mechanism 30, the operation amount adjusting mechanism 40, and the configuration and operation related to these mechanisms will be described in further detail.

  The pulling mechanism 30 is a mechanism for pulling up the protruding member (lock pin) 32. As described above, the lifting mechanism 30 includes the pair of projecting members (lock pins, pins) 32 projecting downward from the bottom surface 25c of the guide piece 25, the operation member (operation lever) 31 connected to the projecting member 32, have. As shown in FIGS. 10 and 11, the operating member 31 is swingably connected to a support base 33 attached to the disk 24. The swing axis d1 of the operation member 31 extends in the lateral direction orthogonal to the front-rear direction. In addition, a reclining cam 34 that can swing around a swing axis d2 (see FIGS. 16 to 19) extending in the lateral direction is provided inside the guide piece 25. The reclining cam 34 is connected to the operation member 31 via a link member 35 and swings in conjunction with the swing of the operation member 31.

  A pair of projecting members 32 projecting from the guide piece 25 are connected to each other at the upper part and are held by a reclining cam 34. 16 to 19, the projecting member 32 is supported in the elongated hole of the reclining cam 34, so that the projecting member 32 penetrates the bottom surface 25c of the guide piece 25 at a certain position. It has become. In addition, a tension spring 36 is stretched between the reclining cam 34 and the disk 24, and thereby the reclining cam 34 is urged to swing toward the cradle 50. That is, the protruding member 32 is biased from the guide piece 25 toward the cradle 50.

  In this way, the operation member 31 is connected to the protruding member 32 via the link mechanism, and the retracting amount of the protruding member 32 is configured to be interlocked with the operating amount of the operating member 31.

  As described above, when the protruding member 32 is engaged with the lock hole 56a, the seat body 20 is maintained at the reclining position. Further, when the protruding member 32 is engaged with the rotation position lock hole 56b, the sheet main body 20 is maintained in the rearward state at the rotation position. A recess 57 is formed in the bottom surface 55 c of the guide groove 55, and the lock hole 56 a is formed in the bottom surface 57 a of the recess 57. On the other hand, the rotation position lock hole 56 b is formed in the bottom surface 55 c of the guide groove 55.

  Therefore, the amount by which the protruding member 32 is lifted to release the engagement of the protruding member 32 with the cradle 50 and slide the seat body 20 between the plurality of reclining positions, in other words, in the lock hole 56a. The amount by which the projecting member 32 located at the bottom is lifted to the bottom surface 57a of the recess 57 is such that the engagement of the projecting member 32 with the receiving base 50 is released and the seat body 20 is slid from one of the reclining positions to the rotational position. The amount of lifting of the protruding member 32 required for this purpose, in other words, the amount of lifting of the protruding member 32 located in the lock hole 56 a to the bottom surface 55 c of the guide groove 55 is smaller. That is, the first operation amount of the operating member 31 required to release the engagement of the protruding member 32 with the cradle 50 and slide the seat body 20 between a plurality of reclining positions is This is smaller than the second operation amount of the operation member 31 required to release the engagement with the cradle 50 and slide the seat body 20 from one of the plurality of reclining positions to the rotational position.

  Next, the configuration of the operation amount adjusting mechanism 40 will be described in detail. The operation amount adjusting mechanism 40 is a mechanism for restricting the operation amount (movement amount, swing amount) of the operation member 31 by contacting the operation member 31 of the pulling mechanism 30.

  The operation amount adjustment mechanism 40 is connected to the contact restriction member 42 that can contact the operation member 31 of the pulling mechanism 30, and the restriction release that moves the contact restriction member 42 when operated. And an operation member 41. The abutment regulating member 42 abuts against the operation member 31 so as to regulate the movement of the operation member 31 such that the operation amount of the operation member 31 of the pulling mechanism 30 is equal to or greater than the first operation amount and less than the second operation amount. It is possible to move between one position pa1 (see FIG. 21) and a second position pa2 (see FIG. 22) that enables the operation amount of the operation member 31 to be equal to or greater than the second operation amount. . The restriction release operation member 41 allows the movement of the contact restriction member 42 from the first position pa1 to the second position pa2 when operated.

  As shown in FIGS. 21 and 22, in this embodiment, the restriction release operation member 41 is an operation that can swing around a swing axis d <b> 3 orthogonal to the swing axis d <b> 1 of the operation member 31 of the pulling mechanism 30. It is configured as a lever. The restriction releasing operation member 41 is formed with a long hole 41a. On the other hand, in the present embodiment, the contact restriction member 42 is configured as an elongated rod-like member, and extends through the long hole 41 a of the restriction release operation member 41. The support base 33 is formed with a long hole 33a extending in parallel with the swing axis d1 of the operation member 31 of the operation mechanism 30. The contact regulating member 42 also extends through the long hole 33 a of the support base 33. Therefore, the contact regulating member 42 moves along a linear movement path mr (see FIGS. 20 and 21) along the elongated hole 33a of the support base 33. Further, when the restriction release operation member 41 is swung, the elongated hole 41a of the restriction release operation member 41 and the elongated hole 33a of the support base 33 are formed when observed along the swing axis d3 of the restriction release operation member 41. The contact restricting member 42 comes to be located at a position where it intersects. It should be noted that the restriction release operation member 41 is moved from the position where the contact restriction member 42 shown in FIG. 22 is disposed at the second position pa2 by a torsion spring or the like (not shown). It is urged toward the position arranged at the first position pa1.

  By the way, as shown in FIGS. 16 to 19, the restriction release operation member 41 is disposed in the vicinity of the operation member 31 of the lifting mechanism 30, and the contact restriction member 42 is covered by the operation member 31 of the lifting mechanism 30 from above. Are arranged. On the other hand, as shown in FIGS. 20 and 21, the operation member 31 of the pulling mechanism 30 is disposed at a position facing the movement path mr, and is a wall that can come into contact with and move away from the movement path mr as the operation member 31 swings. A portion 37 is provided. 20 shows the operation member 31 from below when the protruding member 32 enters the lock hole 56a (when the operation member 31 is in the initial position), and FIG. The outline of the wall portion 37 of the operation member 31 that faces is indicated by a dotted line. As shown in FIGS. 20 and 21, a portion of the wall portion 37 (hereinafter also referred to as a first stopper portion) 37a facing the first position pa1 on the movement path mr is formed on the movement path mr. It is closer to the movement path mr than the portion of the wall portion 37 (hereinafter also referred to as a second stopper portion) 37b facing the two positions pa2.

  With such a configuration, when the contact regulating member 42 is disposed at the first position pa1, the initial stage in which the protruding member 32 of the lifting mechanism 30 shown in FIG. 16 is engaged with one of the lock holes 56a. From the state, the operation member 31 can be swung until the first stopper portion 37a of the wall portion 37 of the operation member 31 and the contact restriction member 42 contact each other. When the operation member 31 is swung until the first stopper portion 37a of the wall portion 37 and the contact regulating member 42 come into contact with each other, the protruding member 32 is pulled up above the bottom surface 57a of the recess 57 as shown in FIG. However, it cannot be lifted at the height of the bottom surface 55b of the guide groove 55. Therefore, when the contact restriction member 42 is disposed at the first position pa1, the operation amount equal to or larger than the first operation amount of the operation member 31 necessary for sliding the seat body 20 between the plurality of reclining positions. (Movement amount), and an operation amount (movement amount) less than the second operation amount of the operation member 31 required to slide the seat body 20 from one of a plurality of reclining positions to the rotation position. The member 31 can be operated (moved).

  On the other hand, when the contact restricting member 42 is disposed at the second position pa2, the second stopper portion 37b of the wall portion 37 of the operation member 31 and the contact restricting member 42 are in contact with each other from the initial state shown in FIG. The operation member 31 can be swung until it comes into contact. When the operation member 31 is swung until the second stopper portion 37b of the wall portion 37 and the contact restriction member 42 are in contact with each other, the protruding member 32 is located above the bottom surface 55b of the guide groove 55 as shown in FIG. Will be raised. Therefore, when the contact restriction member 42 is disposed at the second position pa2, the second operation amount of the operation member 31 necessary for sliding the seat body 20 from one of the plurality of reclining positions to the rotation position. With the above operation amount (movement amount), the operation member 31 can be operated (moved).

  Further, as shown in FIGS. 21 and 22, the operation amount adjusting mechanism 40 is swingable so as to extend on the movement path mr from the first position pa1 to the second position pa2 of the contact restriction member 42. A lever 43 is further provided. The holding lever 43 allows the contact restricting member 42 to move from the first position pa1 to the second position pa2, and is swung out of the movement path mr of the contact restricting member 42 by applying an external force. The ratchet mechanism is configured to hold the contact restricting member 42 at the second position pa2.

  The holding lever 43 is swingable about a swing axis d4 that is orthogonal to the movement path mr of the contact restricting member 42 and parallel to the swing axis d3 of the restriction release operation member 41. The holding lever 43, a torsion spring (not shown) and the like are urged in the direction of the arrow shown in FIG. That is, the holding lever 43 is biased so as to extend above the movement path mr of the contact restriction member 42. The holding lever 43 includes a guide surface 43a inclined at a small angle with respect to the movement path mr of the contact restriction member 42 from the first position pa1 to the second position pa2, and a second position of the contact restriction member 42. and a holding surface 43b extending substantially orthogonal to the movement path from pa2 to the first position pa1. Therefore, when the restriction release operation member 41 is operated and the contact restriction member 42 moves from the first position pa1 toward the second position pa2, the holding lever 43 is once swung out of the movement path mr of the contact restriction member 42. To do. Thereby, the contact restriction member 42 can be moved to the second position pa2 only by operating the restriction release operation member 41. Further, when the contact restriction member 42 moves to the second position pa2, the holding lever 43 extends above the movement path mr of the contact restriction member 42 due to urging from a torsion spring or the like (not shown). As a result, the holding surface 43 b of the holding lever 43 comes into contact with the contact restriction member 42 and restricts the movement of the contact restriction member 42. Accordingly, the contact restriction member 42 is maintained at the second position pa2 against the urging force with respect to the operation member 31.

  Further, the holding lever 43 further has a protruding portion 43 c that extends into the movement path of the operation member 31. On the other hand, the operation member 31 has a release portion 38 that can come into contact with the protruding portion 43 c of the holding lever 43. Then, from the position (first release position) where the operation member 31 has moved by the first operation amount from the initial position (position shown in FIG. 16) located when the protruding member 32 enters the lock hole 56a. When moving from the initial position to the position moved by the second operation amount (second release position), the opening portion 38 of the operation member 31 abuts on the protruding portion 43 c of the holding lever 43. Further, as the operating member 31 swings, as shown in FIG. 18, the opening 38 presses the protrusion 43 c, and the holding lever 43 moves against the urging force and the movement path of the contact restriction member 42. It swings out of mr. When the contact restricting member 42 swings outside the movement path mr, the contact restricting member 42 can move from the second position pa2 toward the first position pa1.

  By the way, the rotation position lock hole 56b is formed as a bottomed hole having a bottom. As shown in FIG. 19, when the protruding member 32 is inserted into the rotation position lock hole 56b, the protrusion member 32 comes into contact with the bottom of the rotation position lock hole 56b. On the other hand, the lock hole 56a is formed as a bottomed hole (an example shown in the figure) having a bottom located below the bottom of the rotational position lock hole 56b, or as a bottomless hole having no bottom. As can be understood from the comparison between FIG. 19 and FIG. 16, the protruding member 32 inserted into the rotation position lock hole 56b is located above the position of the protruding member 32 when inserted into the lock hole 56a. Come to be located. That is, when the protruding member 32 is inserted into the rotational position lock hole 56b, the protruding member 32 does not fully protrude from the guide piece 25 due to the protrusion from the bottom of the rotational position lock hole 56b, and the operation member 31 is in the initial position (FIG. The position shown in FIG. As a result, the operation member 31 engages with the second release position (for example, in FIG. 18) when the protruding member 32 engages with the rotation position lock hole 56b of the cradle 50 and the sheet body 20 is fixed at the rotation position. It is located at an intermediate position (for example, the position shown in FIG. 19) between the initial position (the position shown in FIG. 16) and the initial position (the position shown in FIG. 16).

  On the other hand, when the operation member 31 is located at the intermediate position, the operation member 31 is positioned above the movement path mr between the first position pa1 and the second position pa2 of the contact restriction member 42, and the first of the contact restriction member 42 is. It further has a third stopper portion (stopper) 37c that restricts movement to one position. As a specific configuration, as shown in FIG. 20, the third stopper portion 37c is arranged in a direction orthogonal to the movement path mr of the contact restriction member 42 between the first stopper portion 37a and the second stopper portion 37b. It is formed as a surface extending from the wall portion 37 toward the movement path mr. As can be understood from FIGS. 19 and 20, in the present embodiment, the operation member 31 is not returned to the initial position so that it cannot return to the first position pa1 beyond the third stopper member 37c. It has become.

  Next, an operation when the protruding member (lock pin) 32 is operated using the pulling mechanism 30 and the operation amount adjusting mechanism 40 will be described.

  First, operations of the pulling mechanism 30 and the operation amount adjusting mechanism 40 when changing the reclining angle of the seat body 20 will be described. When the reclining angle of the seat body 20 is changed, the seat body 20 is moved from one reclining position to another reclining position. In this case, first, the operating member (operating lever) 31 of the pulling mechanism 30 in the initial position (the position shown in FIG. 16) is filled within the swingable range, in other words, at the first position pa1. The contact restricting member 42 of the operating amount adjusting mechanism 40 and the first stopper portion 37a of the operating member 31 are brought into contact with each other and are swung to a position where further movement of the operating member 31 is restricted. As the operation member 31 is operated, as shown in FIG. 17, the tip of the projecting member 32 comes out of the lock hole 56 a and is pulled up above the bottom surface 57 a of the recess 57. Thereby, the sheet body 20 can be slid with respect to the cradle 50 until the protruding member 32 is positioned above the other lock hole 56a. When the external force is removed from the operation member 31, the protruding member 32 automatically protrudes from the guide piece 25 due to the biasing force of the tension spring 36 (see FIGS. 10 and 11). In this way, the seat body 20 can be reclined by engaging the protruding member 32 with the different lock holes 56a.

  Next, operations of the pulling mechanism 30 and the operation amount adjusting mechanism 40 when the seat body 20 is changed from the forward state to the rearward state will be described. When the seat body 20 is changed from the forward-facing state to the backward-facing state, the seat body 20 is moved from one reclining position to a rotation position, and the sheet body is rotated (reversed) by 180 ° at the rotation position.

  First, the restriction release operation member 41 of the operation amount adjustment mechanism 40 is swung to move the contact restriction member 42 from the first position pa1 to the second position pa2. Next, the operation member 31 of the pulling mechanism 30 in the initial position is filled within a swingable range, in other words, the contact regulating member 42 positioned at the second position pa2 and the second of the operation member 31. The stopper member 37b is swung to a position where it comes into contact with the stopper member 37b and further movement of the operation member 31 is restricted. As a result of this operation, as shown in FIG. 18, the tip of the protruding member 32 comes out of the lock hole 56 a and is pulled up above the bottom surface 57 c of the guide groove 55. As a result, the seat body 20 can be moved to the rotational position.

  As described above, when the seat body 20 moves to the rotational position, the connection pin 60 of the cradle 50 is pulled into the upright portion 52 and the connection guide 27 of the seat body 20 comes out of the groove 53 of the cradle 27. As a result, the sheet body 20 can be rotated with respect to the cradle 50.

  Further, as described above, the pair of rotational position lock holes 56b are offset from the longitudinal axis cd, and the protruding member 32 moves to the position where the rotational position lock hole 56b faces only after the seat body 20 is reversed. become. Accordingly, when the seat main body 20 starts to move from any of the reclining positions toward the rotational position and the protruding member 32 faces the bottom surface 55c of the guide groove 55, the user may release his hand from the operation member 31. Good. When the sheet main body 20 is in the rearward state at the rotational position, the protruding member 32 automatically enters the rotational position lock hole 56b, and the sheet main body 20 can be fixed in the rearward state.

  As described above, the state of the seat body 20 can be changed from the forward state to the rearward state.

  According to the present embodiment, the operation amount of the operation member 31 necessary for moving the seat body 20 from the reclining position to the rotational position is such that the seat body 20 is moved from one reclining position to another reclining position. This is larger than the operation amount of the operation member 31 required for moving to the position. That is, in order to move the sheet main body 20 to the rotation position where the sheet main body 20 can rotate, the operation member 31 must be largely operated. Therefore, it is possible to effectively prevent the seat body 20 from being unintentionally moved to the rotational position.

  In particular, according to the present embodiment, a step is formed between the surface 57a of the cradle 50 in which the lock hole 56a is formed and the surface 55c of the cradle 50 in which the rotation position lock hole 56b is formed. Has been. With such a simple configuration, a required lifting amount (retraction amount) of the protruding member 32 between when the seat body 20 is moved between the reclining positions and when the seat body 20 is moved from the reclining position to the rotational position. That is, it is realized that the operation amount from the initial position of the operation member 31 that is required is different.

  Further, according to the present embodiment, the contact restricting member 42 that can move to the position pa <b> 2 that comes into contact with the operation member 31 to restrict the movement of the operation member 31 is provided, and the operation amount of the operation member 31 is small. The seat body 20 is provided with an operation amount adjusting mechanism 40 that can be set to be greater than or equal to the first operation amount and less than the second operation amount. According to the operation amount adjusting mechanism 40, it is possible to effectively prevent the seat body 20 from being unintentionally moved to the rotational position.

  In particular, according to the present embodiment, the operation member 31 is configured as a lever that can swing around an axis parallel to the movement path mr of the contact restriction member 42, and comes into contact with the swing. A wall portion 37 that can be brought into and out of contact with the movement path mr of the restricting member 42 is provided, and the wall portion 37 is formed with irregularities along the movement path mr of the contact restriction member 42. Thereby, it is possible to change the range in which the operation lever 31 can swing from the initial position (operable) by a simple operation of moving the contact restriction member 42.

  Furthermore, according to the present embodiment, once the restriction release operation member 41 is operated, the contact restriction member 42 can be maintained at the second position pa by the holding lever 43. Therefore, it is possible to greatly facilitate the operation of the seat body 20 to the rotational position while effectively preventing the seat body 20 from unintentionally moving to the rotational position.

  Further, the restriction release operation member 41 is disposed in the vicinity of the operation member 31. Therefore, it is very easy to operate the operation member 31 and the restriction release operation member 41 to move the sheet main body 20 to the rotation position. Further, since the restriction release operation member 41 is disposed in the vicinity of the operation member 31, it is effectively prevented that the user forgets to operate the restriction release operation member 41 when the seat body 20 is moved to the rotation position. can do. In addition, since the surface including the operation direction of the operation member 31 (vertical surface) and the surface including the operation direction of the restriction release operation member 41 (substantially horizontal direction) are orthogonal, the operation direction of the operation member 31 and the restriction The release operation member 41 is directed in a direction different from the operation direction. More precisely, the swing axis d1 of the operation lever 31 and the swing axis d3 of the restriction release operation lever 41 are substantially perpendicular to each other, whereby the operation direction (upward direction) of the operation lever 31 and the restriction release operation lever 41 are set. The operation direction (substantially lateral direction) is substantially orthogonal. As a result, it is possible to accidentally operate the restriction release operation member 41 when operating the operation member 31, or to operate the operation member 31 accidentally when operating the restriction release operation member 41. Can be prevented.

  Next, operations of the pulling mechanism 30 and the operation amount adjusting mechanism 40 when the seat body 20 is changed from the backward state to the forward state will be described. When the seat body 20 is changed from the forward-facing state to the backward-facing state, the seat body 20 is rotated (inverted) 180 ° at the rotational position, and further moved from the rotational position to one reclining position.

  By the way, when the seat body 20 is moved from one reclining position to the rotation position, as described above, the operation member 31 can be swung within a range in which the contact regulating member 42 is in the second position pa2. Swing fully. In accordance with such an operation, the release portion 38 of the operation member 31 presses the protrusion (release protrusion) 43c of the holding lever 43, and the holding lever 43 swings to the outside of the movement path mr of the contact protrusion member 42. To come. Therefore, the contact restriction member 42 moves away from the second position pa2 toward the first position pa1 by the biasing force via the restriction release operation member 41.

  However, when the protruding member 32 is inserted into the rotational position lock hole 56b, the projecting member 32 comes into contact with the bottom surface of the rotational position lock hole 56b, and the operation member 31 does not return to the initial position (see FIG. 16), but the intermediate position (FIG. 19). When the operation member 31 is in the intermediate position, as shown in FIG. 23, the third stopper portion 37c is positioned above the elongated hole 33a of the support base 33 through which the contact restriction member 42 passes.

  For this reason, when the seat body 20 is in the rearward state, as shown in FIG. 23, the contact restriction member 42 is moved between the first position pa1 and the second position pa2 by the third stopper portion 37c. The position is maintained at pa3. In the state shown in FIG. 23, the operation member 31 of the lifting mechanism 30 can swing until the contact restriction member 42 contacts the wall portion 37 at the second stopper portion 37b. Therefore, when the seat body 20 is in the rearward state, the protrusion member 32 is locked in the rotational position by operating the operation member 31 of the pulling mechanism 30 without operating the restriction release operation member 41 of the operation amount adjustment mechanism 40 again. It can be extracted from the hole 56b. Thereby, rotation with respect to the cradle 50 and sliding with respect to the cradle 50 at the rotational position of the sheet main body 20 are possible.

  As described above, the state of the seat body 20 can be changed from the backward state to the forward state. When the seat body 20 is in a forward-facing state and the protruding member 32 is inserted into any one of the lock holes 56a, the operation member 31 returns to the initial position as shown in FIG. As the operation member 31 returns to the initial position, as shown in FIG. 21, the contact restriction member 42 also moves to the first position. Therefore, when the seat body 20 is changed to the rearward state again, it is necessary to operate the operation amount adjusting mechanism 40, thereby ensuring an excellent operability and moving the seat body 20 to an unintended rotation position. The movement can be effectively prevented.

[Fixed to vehicle seat]
Next, the operation when the child seat 11 (child seat body 10) is fixed to the vehicle seat 1 will be described together with related configurations.

  As described above, the child seat 10 is attached to the vehicle seat 1 by fixing the cradle 50 to the vehicle seat 1 using the seat belt 5 provided on the vehicle seat 1. At this time, the base 51 of the cradle 50 is disposed on the seat 1a of the vehicle seat 1, and the standing portion 52 of the cradle 50 faces the back 1b of the vehicle seat 1.

  As shown in FIG. 3, the seat belt 5 includes a shoulder belt 6b extending obliquely downward and a waist belt 6a extending in the lateral direction. In the present embodiment, as described above, the lock-off device 79 that clamps the shoulder belt 6b is provided on the standing portion 52 of the cradle 50, and the standing portion 52 of the cradle 50 is made to be seat body by the shoulder belt 6b. 20 is fixed. The cradle 50 also has a waist belt guide portion 70 for guiding the waist belt 6a. The waist belt guide portion 70 extends over the front surface 51 a and both side surfaces 51 b of the base 51 of the cradle 50. In such a configuration, as shown in FIG. 3, the movable buckle at the junction of the shoulder belt 6 b sandwiched by the lock-off device 79 and obliquely crossing the standing portion 52 and the waist belt 6 a extending on the base 51. The child seat 10 can be disposed on the vehicle seat 1 by connecting 6c to a fixed buckle 6d fixed to the vehicle.

  Hereinafter, the configuration and operation of the waist belt guide portion 70 will be described in more detail. As shown in FIG. 24, the waist belt guide part 70 includes a front guide part 71 extending on the front surface 51a of the base part 51, a side guide part 72 extending on the side surface 51b of the base part 51 continuously to the front guide part 71, The waist belt 6a is guided on the base 51. The front guide portion 71 and the side guide portion 72 are formed in a groove shape as a whole. The upper edge UE that defines the front guide part 71 and the side guide part 72 from above, and the lower edge LE that defines the front guide part 71 and the side guide part 72 from below are generally defined by steps. According to such a waist belt guide portion 70, the waist belt 6a can be stably held at a substantially constant position. Thus, the child seat 10 (the child seat body 11) is stabilized on the vehicle seat 1, particularly in the front-rear direction, by enclosing the base 51 of the cradle 50 from the front surface 51a and the side surfaces 51b with the waist belt 6a. Can do.

  As shown in FIGS. 9 and 24, the cradle 50 further includes a pair of side guide members 75 that protrude laterally outward from both side surfaces 51 b of the base 51. The side guide member 75 includes a side protrusion 76 that protrudes laterally from the side surface 51 b of the base 51, and an upward extension 77 that extends upward from the side protrusion 76. As shown in FIGS. 3 and 24, the side protrusions 76 of the side guide member 75 form at least a part of the lower edge LE that defines the side guide 70 from below. Further, the upward extending portion 77 of the side guide member 75 is configured to restrict the waist belt 6a disposed in the side guide portion 72 from being displaced outward.

  As shown in FIG. 24, the lower edge LE of the side guide portion 72 is a normal line to the bottom surface 51 c of the base portion 51 that is to be disposed on the vehicle seat 1 in a portion defined by the side protrusion 76. It is located at the uppermost position along the direction nd. Further, the side protrusions 76 of the side guide members 75 form a part of the lower edge LE of the side guide part 72 that is farthest from the front guide part 71, that is, the rearmost part of the lower edge LE. It has become.

  According to such a configuration, the waist belt 6a passes through the side guide member 75 toward the connection point between the fixed buckle 6c and the movable buckle 6d, and passes through the side guide member 75 to pass through the waist belt 6a. When going to the starting point 6b (attachment position to the vehicle), it extends obliquely downward. Thereby, the waist belt 6a not only presses the pedestal 50 and the child seat 10 backward against the vehicle seat 1, but also lowers the pedestal 50 (child seat 10) downward with respect to the vehicle seat 1. It also comes to push towards. Thereby, it becomes possible to fix the receiving stand 50 (child seat 10) with respect to the vehicle seat 1 in a well-balanced manner.

  In particular, the lower edge LE of the side guide portion 72 is normal to the bottom surface 51c of the base portion 51 as it approaches the portion formed by the side protrusions 76 from the connection location with the front guide portion 71. It is preferable that the position gradually rises along nd. In this case, the waist belt 6 a can easily extend in the side guide portion 72, thereby further preventing the waist belt 6 a of the seat belt 5 from coming off the waist belt guide portion 70. More preferably, as shown in FIG. 24, the side guide portion 72 is generally formed as a groove defined by a step, and the step surface 73 forming the step is formed on the side protrusion portion 76 of the side guide member 75. It is smoothly connected to the upper surface 76a. Accordingly, the waist belt 6a can extend through the side guide portion 72 without excessive effort, and thus the waist belt 6a can be prevented from coming off from the waist belt guide portion 70.

  Also, as shown in FIG. 24, the width from the upper edge UE that defines the side guide portion 72 from above to the lower edge LE that defines the side guide portion 72 from below projects sideways from the front surface 51a side of the base 51. As the portion 76 approaches the portion where the lower edge LE is formed, it gradually becomes narrower. According to such a configuration, the direction in which the waist belt 6b extending from the front to the rear extends easily on the upper surface 76a of the side protrusion 76 of the side guide member 75 from the upper side to the lower side. Thereby, the arrangement | positioning of the waist belt 6b in the side guide part 72 can be stabilized, and the waist belt 6a can be made hard to remove | deviate from the waist belt guide part 70. FIG.

  Incidentally, as described above, the upward extending portion 77 of the side guide member 75 is configured to restrict the waist belt 6a disposed on the side guide portion 72 from being displaced outwardly. That is, according to the upward extending portion 77, the height of the lower edge LE along the normal direction nd of the bottom surface 51c of the base portion 51 is the highest, and the inclination direction of the waist belt 6a is changed. It is possible to effectively prevent the waist belt 6a from being displaced from the side guide portion 72 in a region where the 6a tends to be displaced. Thereby, it is possible to stably fix the cradle 50 (the child seat 10) to the vehicle seat 1.

  Further, at least a part of the upper edge UE that defines the side guide portion 72 from above is formed by a folded member 74 that protrudes laterally from the side surface 51b of the base portion 51 and further hangs downward. In particular, in the present embodiment, the folded member 74 is formed in the region where the side protrusions 76 are formed and in the vicinity of the region. Therefore, the waist belt 6a can be held at a substantially constant position by the side guide portion 72 in a region where the inclination direction of the waist belt 6a changes and in the vicinity thereof.

  As shown in FIG. 24, the position 77 a of the top portion of the upward extending portion 77 along the normal direction nd to the bottom surface 51 c of the base portion 51 is a portion where the lower edge LE is formed by the side protruding portion 76. It is preferable that the position of the upper edge UE of the side guide part 72 at the same position as the normal line direction nd is the same as or slightly lower than this position. In particular, in the illustrated example, the position of the top portion 77a of the upward extending portion 77 and the upper edge UE of the side guide portion 72 in the portion where the lower edge LE is formed by the side protrusion 76 are the normal direction. It is located at substantially the same position along nd. When the upward extending portion 77 is formed in this way, the waist belt 6a can be effectively prevented from falling off to the outside, and the waist belt 6a can be easily installed in the side guide portion 72. it can. That is, the child seat 10 can be easily attached to the vehicle seat 1 and the child seat 10 can be stably held on the vehicle seat 1.

[Support leg]
Next, the structure etc. of the child leg main body 11 relevant to the support leg 100 and the support leg 100 are demonstrated.

  The support leg 100 includes a fitting portion 101 that can be fitted to the cradle 50 and a leg portion 110 that is fixed to the fitting portion 101 so as to form a certain angle with respect to the fitting portion 101. ing. Here, the “constant angle” means, for example, that the extending direction of the leg part 110 with respect to the fitting part 101 is not variable. Therefore, a configuration in which the leg portion 110 can swing with respect to the fitting portion 101 is excluded. However, the angle change caused by the play between the members included is ignored and treated as a constant angle is maintained.

  As shown in FIG. 3, the support leg 100 is attached to the cradle 50 and extends between the floor surface 3 of the vehicle on which the vehicle seat 1 is installed and the cradle 50. As a result, the support leg 100 supports the front portion of the child seat body 11 attached to the vehicle seat 1 from the floor surface 3. In addition, the leg part 110 is comprised so that the length may be variable, in order to ensure the versatility with respect to a vehicle.

  First, the configuration of the support leg 100 will be described.

  As can be understood from FIG. 26, the fitting portion 101 has a cylindrical member 102 formed in a U-shape, and more specifically, a metal cylindrical pipe. As shown in FIG. 27, the cylindrical member 102 is inserted into the cradle 50 at both ends and is fitted to the cradle 50. A through hole is formed in the side surface in the end region of the cylindrical member 102, and a fitting protrusion 103 whose tip protrudes from the through hole is provided in the cylindrical member 102. Further, a biasing member 104, for example, a leaf spring is provided in the cylindrical member 102. The urging member 104 presses the fitting protrusion 103 and urges the fitting protrusion 103 so as to protrude outward from the cylindrical member 102.

  As shown in FIG. 27, the cradle 50 further includes a bottom plate 91 that forms the bottom surface 51c, and a housing member 93 that is fixed on the bottom plate 91 and houses the cylindrical member 102 of the fitting portion 101. ing. The accommodating member 93 is formed with a through hole 93 a that receives the fitting protrusion 103 of the fitting portion 101. The accommodating member 93 is made of, for example, a metal square pipe or a metal round pipe. As shown in FIG. 1, an insertion port 94 through which the tubular member 102 of the fitting portion 101 passes is formed in the front surface 51 a of the cradle 50.

  The bottom plate 91 has a fitting release portion 92 provided at a position facing the through hole 93 a of the housing member 93. The fitting release portion 92 can push the fitting protrusion 103 protruding into the through hole 93 a into the housing member 93 by being operated. As shown in FIG. 26, the fitting release portion 92 is connected to a portion other than the fitting release portion 92 of the bottom plate 91 at a part of the outer contour, and the fitting release portion of the bottom plate 91 at a portion other than the portion of the outer contour. The tongue is cut off from a portion other than 92, and is configured as a tongue-like portion that can be bent and abut against the fitting protrusion 103 with respect to a portion other than the fitting release portion 92 of the bottom plate 91.

  As shown in FIG. 27, the cylindrical member 102 of the fitting portion 101 is connected to the leg portion 110 at a certain angle via a reinforcing plate 105. Furthermore, the fitting part 101 and the leg part 110 are mutually fixed by welding. A protective cover 106 that covers the connection portion is provided at a connection portion between the fitting portion 101 and the leg portion 110.

  Next, the leg part 110 will be described. The leg portion 110 includes a first tubular member 111, a second tubular member 113 slidable with respect to the first tubular member 111, and the second tubular member 113 with respect to the first tubular member 111. And a positioning mechanism 120 to be fixed. The first cylindrical member 111 has one end connected to the cylindrical member 102 of the fitting portion 101 and the other end connected to the positioning mechanism 120. The second tubular member 113 is configured to be inserted into the first tubular member 111 from one end side and to slide within the first tubular member 111. The other end of the second tubular member 113 is provided with a leg end 118 that comes into contact with the floor surface 3.

  As shown in FIG. 31, the 1st cylindrical member 111 and the 2nd cylindrical member 113 can mutually be formed from a metal cylindrical pipe. The second cylindrical member 113 has a pair of holes 113a formed at positions facing each other, and the sliding direction of the second cylindrical member 113 with respect to the first cylindrical member 111 (the longitudinal direction of the second cylindrical member 113). ) Are formed at intervals (see FIGS. 28 and 29). As shown in FIG. 29, each hole 113a is a long hole extending long in a direction orthogonal to the sliding direction of the second tubular member 113 relative to the first tubular member 111 (longitudinal direction of the second tubular member 113). It is formed as. The second tubular member 113 has a rotation preventing groove 113b along the sliding direction of the second tubular member 113 with respect to the first tubular member 111 (longitudinal direction of the second tubular member 113). It is elongated.

  On the other hand, the positioning mechanism 120 includes a housing 121 and a slider 125 that can slide with respect to the housing 121. The other end of the first tubular member 111 is fixed to the housing 121. As shown in FIGS. 29 and 30, the housing 121 is provided with a rotation prevention protrusion 122 that engages with the rotation prevention groove 113 b of the second cylindrical member 113. The rotation preventing groove 113b and the protrusion 122 engage with each other, so that the rotation of the second cylindrical member 113 relative to the housing is prevented, and the hole 113a of the second cylindrical member 113 opens in a certain direction. become.

  The slider 125 has a through pin 126 that extends along the sliding direction with respect to the housing 121. As the slider 125 enters the housing 121, the through pin 126 can pass through the second cylindrical member 113 through any one of the pair of long holes 113 a. The second cylindrical member 113 can be fixed to the first cylindrical member 111 by the penetration pin 126 penetrating the second cylindrical member 113.

  As shown in FIGS. 29 to 31, the slider 125 further includes a sliding guide member 127 extending along the sliding direction with respect to the housing 121. The sliding guide member 127 is formed with an elongated hole 127a extending along the longitudinal direction thereof. On the other hand, the housing 121 includes a first guide protrusion 123a extending through the elongated hole 127a of the sliding guide member 127 and a second guide protrusion 123b provided to face the first guide protrusion 123a. Is provided. As shown in FIG. 31, the first guide protrusion 123 a faces the through pin 126 of the slider 125 from one side. The second guide protrusion 123b surrounds the penetration pin 126 from three directions. In such a configuration, the first guide protrusion 123 a and the second guide protrusion 123 b of the housing 121 are engaged with the through pin 126 and the sliding guide member 127 of the slider 125, so that the slider 125 is relative to the housing 121. Can slide in only one direction.

  Further, as shown in FIG. 30, the sliding guide member 127 has an engaging projection 127b, and the housing 121 has an engaging portion 124 that can be engaged with the engaging projection 127b. By engaging the engagement protrusion 127b of the sliding guide member 127 and the engagement portion 124 of the housing 121, the penetrating pin 126 is held in a state of penetrating the second cylindrical member 113. . However, the engagement between the engagement protrusion 127b of the sliding guide member 127 and the engagement portion 124 of the housing 121 is performed by applying an external force to pull out the slider 125 from the housing 121 along the sliding direction of the slider 125. It is designed to be released easily.

  In the present embodiment, as shown in FIG. 30, the engaging portion 124 is formed as a protrusion extending from the housing 121. The engaging portion 124 is configured to be elastically deformable, and the engaging protrusion 127b of the sliding guide member 127 can move over the engaging portion 124 and move. When the engaging protrusion 127 b that has once passed over the engaging portion 124 engages with the engaging portion 124, the penetrating pin 126 passes through the second cylindrical member 113 until an external force is applied to the slider 125. It will be retained.

  In the cross section parallel to the sliding direction of the slider 125 and the cross section parallel to the protruding direction of the engaging protrusion 127b from the sliding guide member 127 (that is, the cross section of FIG. 30), the engaging portion 124 is It has a V-shape and guides the movement of the engaging protrusion 127b along the sliding direction of the slider 125. For this reason, the engaging protrusion 127b engages smoothly with the engaging portion 124, and the operation of the slider 125 can be performed stably.

  Next, the operation of the support leg 100 having such a configuration will be described. First, the case where the support leg 100 is used by being attached to the cradle 50 will be described.

  When attaching the support leg 100 to the cradle 50, the end of the tubular member 102 of the fitting portion 101 is inserted into the insertion port 94 of the cradle 50 and pushed. As a result, the distal end region of the cylindrical member 102 is inserted into a cylindrical accommodating member 93 disposed in the base 51 of the cradle 50. Finally, the fitting protrusion 103 urged so as to protrude from the tubular member 102 enters the through hole 93 a of the housing member 93. In this manner, the fitting portion 101 of the support leg 100 is fitted to the receiving base 50, and the support leg 100 is attached to the child seat body 11.

  According to the support leg 100, the leg 110 is fixed to the fitting part 101 so as to form a fixed angle with respect to the fitting part 101, and thus the rigidity of the support leg 100 is greatly improved. . Therefore, the main body portion 11 of the child seat, that is, the cradle 50 and the seat main body 20 can be stably held on the vehicle seat 1.

  Further, in the positioning mechanism 120 that fixes the second cylindrical member 113 to the first cylindrical member 111, the through-pins 126 having a circular cross section of the slider 125 are respectively provided in the opposing portions of the second cylindrical member 113. The pair of holes 113a is formed so as to pass through. That is, since the penetration pin 126 penetrates the second cylindrical member 113, the second cylindrical member 113 can be firmly fixed to the first cylindrical member 111. Thereby, the child seat 10 (the cradle 50 and the seat body 20) can be more stably held on the vehicle seat 1.

  In addition, since the fitting part 101 and the leg part 110 are fixedly connected with high rigidity, external force may be concentrated on the positioning mechanism 120 having a movable member. However, as described above, the penetration pin 126 penetrates the second cylindrical member 113 through the pair of holes 113a, and the second cylindrical member 113 is firmly fixed to the first cylindrical member 111. So there is no problem.

  The through pin 126 needs to pass through a pair of holes 113 a formed in the second cylindrical member 113, but the pair of holes 113 a are formed as long holes, and the cross-sectional area is necessary for the through pin 126 to pass through. It is larger than the size. Therefore, it is possible to easily operate the slider 125 so that the through pin 126 penetrates both the pair of through holes 113. Therefore, the length adjustment of the leg part 110 using the positioning mechanism 120 can be performed easily.

  On the other hand, the long hole 113a of the second tubular member 113 does not extend in the sliding direction of the second tubular member 113 relative to the first tubular member 111 (the longitudinal direction of the second tubular member 113). Therefore, when the penetrating pin 126 penetrates the second cylindrical member 113, the leg portion 110 can be kept at a certain length. On the other hand, the long hole 113a of the second cylindrical member 113 extends in a direction orthogonal to the sliding direction of the second cylindrical member 113 relative to the first cylindrical member 111 (longitudinal direction of the second cylindrical member 113). . However, the rotation preventing groove 113b formed in the second cylindrical member 113 and the rotation preventing projection 122 formed in the housing 121 are engaged. Therefore, the second tubular member 113 and the through pin 126 do not move relative to each other in the longitudinal direction of the long hole 113a.

  Furthermore, since the second tubular member 113 is firmly fixed to the first tubular member 111, the housing 125 is not greatly deformed. For this reason, it is sufficient if the housing 121 and the slider 125 are locked to each other by a simple mechanism. For example, as described above, the slider 125 and the housing 121 are engaged so that they can be released by applying an external force in the sliding direction of the slider 125, and the penetrating pin 126 penetrates the second cylindrical member 113. You may make it hold | maintain. More specifically, a protrusion is formed on one of the slider 125 and the housing 121, and an engaging portion that engages with the protrusion is formed on the other of the slider 125 and the housing 121, and the protrusion and the engaging portion engage with each other. Thus, the slider 121 and the housing 125 may be held in a state where the penetrating pin 126 penetrates the second tubular member 113. In addition, in the example shown in FIG. 30, although the engagement part showed the example formed as a processus | protrusion with a V-shaped cross section, it is not restricted to this. For example, the engaging portion may be formed as a concave portion that receives the engaging protrusion 127b.

  Next, the case where the support leg 100 is removed from the cradle 50 will be described. In this case, first, the fitting release part 92 which consists of a part of the baseplate 91 typically formed with resin is pressed. By this operation, the fitting protrusion 103 is pressed into the housing member 93, and the fitting portion 101 can be pulled out from the inside of the cradle 50 while holding the protective cover 106, for example. In this way, the support leg 100 can be detached from the cradle 50 (the child seat body 11). Therefore, the fitting portion does not come into contact with the housing member 93 that can be formed by a metal pipe or the like, and does not come into contact with the cylindrical member 102 and the fitting protrusion 103 of the fitting portion 101 that can be formed by metal. The support leg 100 can be detached from the cradle 50 (the child seat 10) by releasing the fitting of the 101 to the cradle 50. For this reason, the support leg 100 can be safely removed from the cradle 50 (child seat 10).

  In addition, although one Embodiment of this invention was described above, naturally various changes are possible within the range of the summary of this invention.

FIG. 1 is a perspective view showing an embodiment of a child seat (child seat body) according to the present invention. FIG. 2 is a top view showing the child seat with the seat body facing forward. FIG. 3 is a perspective view showing the child seat attached to the vehicle seat and having the seat body in a rearward state. FIG. 4 is a side view showing the child seat, for explaining the reclining mechanism of the seat body. FIG. 5 is a side view for explaining a change in the state of the seat body between the rearward state and the forward state, showing the child seat. FIG. 6 is an exploded perspective view showing the seat body and the reclining base. FIG. 7 is a perspective view showing the seat body. FIG. 8 is a diagram showing the cradle from the front. FIG. 9 is a perspective view showing the cradle. FIG. 10 is a partial perspective view showing the child seat with the seat portion and the backrest portion of the seat body removed. FIG. 11 is a partial cross-sectional view showing the child seat from the side. FIG. 12 is a view for explaining the link structure housed in the upright portion of the cradle and connected to the connection pin. FIG. 13 is a perspective view showing the child seat in a rearward-facing state with a cover attached. FIG. 14 is a top view showing the cover. FIG. 15 is a top view for explaining the operation of the cover attached to the child seat. FIG. 16 is a diagram for explaining the operation of the pulling mechanism and the operation amount adjusting mechanism. FIG. 17 is a view corresponding to FIG. 16 for explaining the operation of the pulling mechanism and the operation amount adjusting mechanism. FIG. 18 is a diagram corresponding to FIGS. 16 and 17 and is a diagram for explaining the operation of the lifting mechanism and the operation amount adjusting mechanism. FIG. 19 is a diagram corresponding to FIGS. 16 to 18 and is a view for explaining the operation of the pulling mechanism and the operation amount adjusting mechanism. FIG. 20 is a diagram showing the operation member from the back side. FIG. 21 is a plan view for explaining the operation of the pulling mechanism and the operation amount adjusting mechanism. FIG. 22 is a view corresponding to FIG. 21 and is a plan view for explaining the operation of the pulling mechanism and the operation amount adjusting mechanism. FIG. 23 is a view corresponding to FIGS. 21 and 22 and is a plan view for explaining the operation of the pulling mechanism and the operation amount adjusting mechanism. FIG. 24 is a partial side view showing the child seat. FIG. 25 is a perspective view showing a support leg. FIG. 26 is a perspective view showing the child seat with the support legs attached from the back side. FIG. 27 is a cross-sectional view schematically showing a connecting portion between a support leg and a cradle. FIG. 28 is a partial front view showing the leg portion of the support leg. FIG. 29 is a diagram showing a cross section taken along line AA of FIG. FIG. 30 is a diagram showing a cross section taken along line BB in FIG. 29 with some constituent members omitted. FIG. 31 is a diagram showing a cross section taken along line CC in FIG. 30 with some constituent members omitted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 10 Child seat 20 Seat main body 50 Receptacle 51 Base 51a Front side 51b Side 51c Bottom 52 Standing part 70 Waist belt guide part 71 Front guide part 72 Side guide part 73 Step surface 74 Guide material 75 Side guide member 76 Side Projection 77 Upper extension

Claims (8)

A base having a front surface, a side surface, and a bottom surface, and an upright portion rising from the base, and a cradle attached to a vehicle seat;
A seat body supported on the cradle,
The cradle is a waist belt guide portion that guides a waist belt of a seat belt provided in a vehicle seat, the front guide portion extending on a front surface of the base portion, and the base portion continuous with the front guide portion. A waist belt guide portion having a side guide portion extending on the side surface of
The cradle further includes a side guide member including a side protrusion that protrudes laterally from the side surface of the base, and an upward extension that extends upward from the side protrusion,
The child seat, wherein the side protrusion of the side guide member forms at least a part of a lower edge that defines the side guide. The said lower edge of the said side guide part is located in the uppermost part along the normal line direction to the said bottom face of the said base part in the part demarcated by the said side protrusion part. Child seat. The lower edge of the side guide portion gradually rises along the normal direction to the bottom surface of the base portion as it approaches the portion formed by the side protrusion from the front side of the base portion. The child seat according to claim 1, wherein the child seat is located at a position. The said side protrusion part of the said side guide member forms the part most spaced apart from the said front guide part among the lower edges of the said side guide part, The Claim 1 thru | or 3 characterized by the above-mentioned. Child seat as described in The side guide portion is formed as a groove having at least a lower edge defined by a step,
5. The step surface forming the step is smoothly connected to the side protrusion of the side guide member forming a part of the lower edge. 6. Child seat described. The position of the top portion of the upward extending portion along the normal direction to the bottom surface of the base portion is the normal direction of the upper edge of the side guide portion in the portion where the lower edge is formed by the side protrusion. The child seat according to any one of claims 1 to 5, wherein the child seat is the same as or lower than the position along the line. 7. At least a part of an upper edge that defines the side guide portion from above is formed of a folded material that protrudes laterally from the side surface of the base portion and further hangs downward. Child seat according to any one of the above. The width from the upper edge to the lower edge that defines the side guide portion gradually decreases from the front surface side of the base portion toward the portion where the lower edge is formed by the side protrusion. The child seat according to any one of claims 1 to 7, wherein

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