JP2012025288A - Child car seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a child car seat in which shoulder harnesses thereof can be easily adjusted at positions suitable to the physique of an infant seated thereon.SOLUTION: In order to carry out height adjustments on the back side of shoulder harnesses for restraining an infant seated on a seat cushion 2 covering the body shell 3 of the child car seat 1, a plurality of shoulder harness retention holes 11, through which the shoulder harnesses 4 are inserted to retain the height of the shoulder harnesses 4, are provided at predetermined heights on the back surface of the body shell 3. The child car seat includes: shoulder harness insertion holes 10 that link the shoulder harness retention holes 11 via slits 13; and stopper plates 15 that are formed contiguous with the bases of the plurality of shoulder harness retention holes 11, and block the slits 13.

Description

  The present invention relates to a child seat, and more particularly to a child seat in which a shoulder harness for safely restraining an infant's body in a vehicle can be easily adjusted to a position suitable for the infant's physique.

  Conventionally, a child seat has been used to safely restrain an infant's body in a vehicle. The child seat has a method for attaching to the seat according to the standard according to the weight of the target infant and the approximate age. In addition, even when attached in an appropriate manner, it is necessary to adjust the shoulder harness height to a position suitable for the infant's physique.

  Under the current standards (for example, EC standards), the child seat is attached to the vehicle seat rearward until the subject's weight is less than 13 kg (approximately 9 months from the newborn), and then until around 4 years old (weight 13-18 kg) In the meantime, it is prescribed that it should be installed in a forward direction. For this reason, in the child seat assumed to be used from a newborn to about 4 years old, various devices have been devised so that the appropriate shoulder harness height can be adjusted according to the respective attachment modes and the physique of the target infant.

  FIG. 8A is a partial front view showing an example of a state in which the shoulder harness 53 of the conventional child seat 50 is attached. On the back 52 of the child seat shown in the figure, shoulder harness through holes 54 are formed at four heights at predetermined intervals in the height direction. In the figure, the shoulder harness 53 is attached to the back portion 52 using the second shoulder harness through hole 54 from the top. FIG. 8A shows the shoulder harness through hole 54 formed in the seat cushion 51. As shown in FIG. 8B, the shoulder harness through hole 54 of the body shell 55 of the child seat is located at the same position. A through hole 57 is formed. The end portion of the shoulder harness 53 is inserted into the shoulder harness through hole 54 of the seat cushion and the through hole 57 of the main body shell 55 and extends to the lower end on the back side of the main body shell 55, and a fixed hanger provided at the lower end of the main body shell 55 (Not shown) is locked and fixed (Non-Patent Document 1).

  In order to properly use the child seat shoulder harness 53 having such a configuration, for example, when the child seat is attached to the seat backwards, the shoulder height of the infant in a posture slightly close to the sleeping position (hereinafter referred to as the shoulder harness). The end portion of the shoulder harness 53 is fixed on the back side of the main body shell 55 by using a shoulder harness through hole 54 that is the same as or lower than the shoulder. On the other hand, when the child seat is attached to the seat facing forward, the shoulder harness through hole 54 in which the shoulder height of the infant is the same as the shoulder harness height or the shoulder harness height is slightly higher according to the physique of the infant to be seated. It is necessary to fix the end of the shoulder harness 53 on the back side of the main body shell 55 by using it.

  For this reason, it is necessary to adjust the height of the appropriate shoulder harness according to the growth of the infant using the child seat and when the infant to be used has a different physique. Must be removed from the hanger (not shown), pulled out of the shoulder harness through hole 54, reinserted into the new shoulder harness through hole 54, and fixed to the hanger again. In this case, as a matter of course, to perform these operations, the child seat is removed from the vehicle seat.

  A child seat shoulder belt height adjustment mechanism has also been proposed (Patent Document 1). In the invention disclosed in Patent Document 1 (the following reference numerals are described in the embodiment of Patent Document 1), fixed slots 56 and 58 are provided on the surface of the back panel 24 at a predetermined height interval, The shoulder belt is moved to a fixed slot having an appropriate height by using a movement passage 60 connecting the two. Since the back panel 24 between the fixed slots 56 and 58 becomes a cantilever portion 72, the fixed slots are reinforced by a reinforcing member in which predetermined reinforcing plates 74 and 76 are resin-molded.

JP 7-329706 A

Takata Corporation, Child Seat Instruction Manual (Download), [online], 2010 version, [Search on July 12, 2010], Internet <http://www.takata.co.jp/childseat/support/ download.html>

  In the child seat disclosed in Patent Document 2, a large-sized resin reinforcing member in which a reinforcing plate is insert-molded is used to reinforce a cantilever portion that receives a load from the shoulder belt, and the reinforcing member is attached to the front and rear surfaces of the back panel. It is attached. For this reason, the number of parts increased, leading to an increase in cost and weight. The above-described tab is provided between the fixed slot and the movement passage. However, since the fixed slot and the moving passage form a single slit shape, if a large lateral force is applied to the shoulder belt, the shoulder belt goes over the tab position and wraps around the moving passage so that the fixed position is reached. There is a risk that it will come off.

  Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, and to adjust the height of the shoulder harness by providing a slit that allows a plurality of shoulder harness holding holes to be continued in the body shell of the conventional child seat. It is to provide a child seat that can be easily performed.

  In order to achieve the above object, the present invention provides a child seat capable of adjusting the height of the back side of a shoulder harness of a restraining means for restraining an infant seated on a seat cushion covering a main body shell, wherein the shell has a back surface thereof. A plurality of shoulder harness holding holes that are inserted through the shoulder harness and hold the height thereof at a predetermined height, and a plurality of the shoulder harness through holes in which the shoulder harness holding holes are continuous with a slit, And a stopper means for closing a slit formed continuously on the lower side of the shoulder harness holding hole.

  It is preferable that the shoulder harness holding hole has a shape in which a part of the stopper plate is accommodated and has a rotatable clearance.

  It is preferable that the stopper plate is rotatably attached to the main body shell and has an engaging portion that covers a lower side of the shoulder harness holding hole at a portion that fits in the shoulder harness holding hole.

  A part of the seat cushion is cut out into a shape in which the shoulder harness through hole is exposed, and a back pad for covering the cut out part and securing a holding position of the shoulder harness is provided as a part of the seat cushion. It is preferable to attach it detachably.

  According to the present invention, the simple structure of the shoulder harness through-hole and the stopper formed in the main body shell allows the child seat to be attached to the vehicle seat at the back position of the shoulder harness according to the physique of the infant restrained by the child seat. There is an effect that it can be easily adjusted without leaving it.

The front view which showed the child seat and main body shell of this invention. The elements on larger scale which showed the structure of the shoulder harness through-hole shown in FIG.1 (b), and the use condition. Explanatory drawing which showed the structure and operation state of a shoulder harness holding hole and a stopper plate. Explanatory drawing which showed the procedure of the height adjustment work of a shoulder harness. The partial front view which showed the example of 1 structure of the back pad. The child seat front view which showed the other structural example of the back pad. The front view and back view which showed the structure of the back pad used in FIG. The front view which showed the child seat and main body shell as a prior art example.

  Hereinafter, the following examples will be described with reference to the accompanying drawings as modes for carrying out the child seat of the present invention.

  FIG. 1A is a front view showing the overall shape of the child seat 1 of the present invention, and FIG. 1B is a front view showing the main body shell 3 of the child seat shown in FIG. In this state, a state in which the head cushion (not shown), each cushion such as the seat cushion 2, and the restraining members such as the shoulder harness 4, the waist harness 5, and the buckle 6 are removed from the child seat 1 is shown. In addition, in order to understand the relationship between each member, these are shown by imaginary lines in the drawing.

  Two rows of shoulder harness through holes 10 formed by hollowing out the main body shell 3 into a predetermined shape are provided at the back position of the main body shell 3 shown in FIG. FIG. 2A is an enlarged view of the shoulder harness through hole 10 formed in the main body shell 3. 2A shows two shoulder harness through holes 10 formed symmetrically with respect to the center line C of the main body shell 3 (FIG. 1B). Only the shape of the harness through hole 10 is shown, and the right side shows a state in which the stopper plate 15 is attached to each shoulder harness holding hole 11b. FIG. 2B shows a state in which the shoulder harness 4 is inserted into the shoulder harness holding hole 11b and is folded back on the surface of the stopper plate 15 (the configuration will be described later).

  The shape of the shoulder harness through hole 10 will be described with reference to FIG. The shoulder harness through-hole 10 has three holding holes 11 (the holding holes 11a, the lowermost shoulder harness holding hole 11a, the shoulder harness holding hole 11b formed at the middle position, and the shoulder harness holding hole 11c formed at the upper end position. When not specified, it is generally referred to by reference numeral 11.) and a slit 13 formed so as to communicate between the holding holes 11 in the vertical direction. The lowermost shoulder harness holding hole 11a forms a flat rectangular opening into which the shoulder harness 4 can be inserted. The shoulder harness holding holes 11b and 11c at the middle position and the upper end position are formed when the stopper plate 15 shown in the right view of FIG. 2A rotates around the rotation pin 16 (FIGS. 3B and 3C). Each side provided with the clearance of (see) has a different pentagonal opening. One of the slit 13 continuous with the lower side 12 of the opening and the mating end is chamfered. By providing the chamfered portion 12a, the shoulder harness 4 can be smoothly guided from the slit 13 to the shoulder harness holding holes 11b and 11c. As will be described later, the stopper plate 15 closes the upper end of the slit 13 so as to cover the lower sides 12 of the shoulder harness holding holes 11b and 11c. And it hold | maintains so that the shoulder harness 4 may cover on the stopper plate 15 (refer FIG.2 (b)). Since the shoulder harness 4 is held in the shoulder harness holding hole 11 in a state where the slit 13 is closed in this way, troubles that may occur in the invention disclosed in Patent Document 1 are reliably prevented.

  Next, the configuration and operation of the stopper plate 15 will be described with reference to FIGS. FIG. 3A is an exploded perspective view showing the stopper plate 15 attached to the shoulder harness holding hole 11c (as an example, the upper end position) formed in a part of the main body shell 3 for each part. As shown in FIG. 3A, a mounting hole 14 for the rotation pin 16 is provided near the shoulder harness holding hole 11 c formed in the main body shell 3. The rotation pin 16 functions as a rotation axis of the stopper plate 15. The resin push-type rotation pin 16 is fixed to the attachment hole 14 and the metal main body plate 17 is rotatably attached to the main body shell 3. The main body plate 17 is a structural part of the stopper plate 15 and is a metal stamping member comprising a bearing portion 17a and an inverted U-shaped flange 17b formed integrally with the bearing portion 17a. The flange 17 b has an inner dimension slightly larger than the thickness of the main body shell 3. When the stopper plate 15 rotates around the rotation pin 16, the flange 17 b engages with the flange 17 b to close the upper end of the slit 13 of the main body shell 3. It functions as a part. Further, the outer shape of the main body plate 17 is covered with a resin cover 18. By covering the main body plate 17 with the resin cover 18, it is possible to prevent the shoulder harness 4 that is stretched over the stopper plate 15 from being damaged.

  FIGS. 3B and 3C are views showing the operation state of the stopper plate 15 attached to the main body shell 3. By assembling each part (the rotating pin 16, the main body plate 17, and the resin cover 18) of FIG. 3A integrally, a part of the flange 17a of the stopper plate 15 is accommodated in the shoulder harness holding hole 11c, and the rotation is performed. It functions as a member that rotates around the moving pin 16 in the shoulder harness holding hole 11c. FIG. 3B shows a state in which the upper end of the slit 13 is closed by engaging so as to cover the lower side 12 of the shoulder harness holding hole 11c. FIG. 3C shows a state in which the flange 17a of the stopper plate 15 is rotated to the upper oblique side 12b of the shoulder harness holding hole 11c. In this state, the slit 13 and the shoulder harness holding hole 11c are in a connected state. In this state, the height of the shoulder harness 4 can be adjusted by using the slit 13 as described later. FIG.3 (d) is the figure which showed the state which hold | maintained the shoulder harness 4 with the shoulder harness holding hole 11c. The state in this figure corresponds to the holding state of the shoulder harness 4 shown in FIG.

[Shoulder harness height adjustment work]
Here, the adjustment operation of the shoulder harness height in the child seat 1 (FIG. 1 (a)) of the present invention having the above-described shoulder harness through hole 10 will be described with reference to FIGS. In each figure, only the height adjustment of the left shoulder harness is illustrated in accordance with the description.
The procedure for adjusting (changing) the height of the shoulder harness to the shoulder harness holding hole 11c at the upper end position from the state where the shoulder harness holding hole 11b is held in the middle position shoulder harness holding hole 11b shown in FIG. This will be described with reference to FIGS. 4 (a) to 4 (d).

  First, as shown in FIG. 4A, the stopper plate 15 of the shoulder harness holding hole 11c at the upper end position is rotated so that the upper end of the slit 13 is connected to the lower side 12 of the shoulder harness holding hole 11c. In this state, the side end of the shoulder harness 4 that is hung on the shoulder harness holding hole 11b at the middle position is lifted so as to enter the slit 13 (FIG. 4B), and the lower side 12 of the shoulder harness holding hole 11c at the upper end position. The shoulder harness holding hole 11c is pulled up along the chamfered portion 12a. In accordance with this, the stopper plate 15 is rotated so as to return to the original state, and the shoulder harness is spread over the stopper plate 15 (FIG. 4C). If the stopper plate 15 is returned to the position where the lower side of the shoulder harness holding hole 11c is closed in this state, the shoulder harness 4 is changed to the position of the shoulder harness holding hole 11c as shown in FIG. In addition, the above operation | work is performed in the state which removed the back pad 20 of the seat cushion 2, as shown in FIG.5 (b).

[Configuration example 1 of back pad]
Fig.5 (a) has shown the structural example of the back pad 20 of the seat cushion 2 in the child seat 1 shown to Fig.1 (a). A lower back pad 22 is attached below the back pad 20 shown in FIG. 5A while being sewn between the seat portion and the back portion of the seat cushion 2. On the upper portion of the lower back pad 22, a cutout portion 2 a is formed by cutting out the back portion of the seat cushion 2 in a substantially square shape. A flap-like upper back pad 20 sewn on the upper end of the cutout portion 2a is attached so as to close the cutout portion 2a (FIG. 5B). A plurality of slits 21 are formed on the upper back pad 20 from the side edges in accordance with the shoulder harness holding positions at the respective heights. As shown in FIG. 5A, the both ends of the upper back pad 20 are inserted from the edge of the cut-out portion 2a to the back side of the seat cushion 2 to cover the cut-out portion 2a, and the lower back pad 22 is The hook 23 is stopped on the surface of the seat cushion 2. Accordingly, the entire back portion can be covered with the back pad 20 and the lower back pad 22 so that the shoulder harness 4 is positioned in the cut slit 21 at an appropriate position.

  On the other hand, when adjusting the height of the shoulder harness 4 described above, as shown in FIG. 5B, the hook 23 of the lower back pad 22 is removed and the edge of the cutout portion 2a of the seat cushion 1 is removed. The work shown in each drawing of FIG. 4 can be performed by pulling out the end portion of the inserted upper back pad 20 and turning it up.

[Configuration example 2 of back pad]
As shown in FIG. 7A, the back pad 25 includes a large head cushion 25A that covers up to the infant's temporal region and a small back pad portion 25B that is detachably attached below the head cushion 25A. The mounting height is adjusted by a three-stage hook 26 provided on the back side of the head cushion 25A so that the upper end position of the shoulder harness 4 comes to the narrow joint portion between the head cushion 25A and the back pad portion 25B. It is like that.

  A method of attaching the back pad 25 to the seat cushion 2 will be described with reference to FIGS. On the side of the seat cushion 2 to which the back pad 25 of this type is attached, as shown in FIG. 6A, two oval cutout portions 2a are formed along the respective longitudinal shoulder harness through holes 10. Has been. A hook 26 that engages with a button hook (hook) 26 (FIG. 7B) on the back surface of the head cushion 25A is attached to the side edge of the seat cushion 2 at the middle position of the cutout portion 2a. In order to attach the back pad 25 to the seat cushion 2, as shown in FIG. 6 (b), the connecting portion between the head cushion 25A and the back pad portion 25B matches the height of the shoulder harness 4. The hook 26 on the back surface of the head cushion 25 </ b> A may be engaged with the hook 26 of the seat cushion 2, and the backrest portion 25 </ b> B may be placed along the back portion of the seat cushion 2.

  The shape of the shoulder harness through hole 10 of the present embodiment is as shown in FIG. 2A, but the shoulder harness holding hole 11 is not limited to the number of steps, interval, and position as shown, and the shoulder harness 4 is attached. It can be appropriately set in consideration of the aspect. The configuration of the stopper plate 15 is not limited to the combination of the metal plate and the resin cover, and may be a single resin part having a predetermined strength. As shown in FIGS. 5 (b) and 6 (a), the back pad 20, 25 is a cover type so that the entire shoulder harness through hole 10 is exposed when the height of the shoulder harness 4 is adjusted. 5 and FIG. 6 The configurations and shapes shown in each figure can be used.

  Thus, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope indicated in each claim. That is, an embodiment in which technical means appropriately changed within the scope of the claims is also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Child seat 2 Seat cushion 2a Cut-out part 3 Main body shell 4 Shoulder harness 10 Shoulder harness passage hole 11, 11a, 11b, 11c Shoulder harness holding hole 12 Lower side 13 Slit 15 Stopper plate 16 Rotating pin 20, 25 Back pad

Claims (4)

In the child seat capable of adjusting the height of the back side of the shoulder harness of the restraining means for restraining the infant seated on the seat cushion covering the main body shell,
The shell has a shoulder surface in which a plurality of shoulder harness holding holes are inserted into the back surface of the shoulder harness so as to hold the height thereof, and the shoulder harness holding holes are continuous with a slit. A child seat, comprising: a harness through hole; and stopper means for closing a slit continuously formed on the lower side of the plurality of shoulder harness holding holes.   The child seat according to claim 1, wherein the shoulder harness holding hole has a shape in which a part of the stopper plate is accommodated and has a rotatable clearance.   The said stopper plate is attached to the said main body shell so that rotation is possible, and has an engaging part which covers the lower side of the said shoulder harness holding hole in the site | part which fits in the said shoulder harness holding hole. The child seat according to claim 2.   A part of the seat cushion is cut out into a shape in which the shoulder harness through-hole is exposed, covers the cut out part, and a back pad for securing the holding position of the shoulder harness is a part of the seat cushion. The child seat according to claim 1, wherein the child seat is detachably attached to the child seat.

Images