JP4520733B2 - child seat - Google Patents

Description

  The present invention relates to a child seat, and more particularly to a child seat capable of adjusting the position of a belt that restrains an infant.

  Conventionally, a child seat capable of adjusting the position of a restraining belt for restraining an infant is known. In this kind of child seat, in order to adjust the restraint belt to a position suitable for the infant's physique, the position of the belt is adjusted by removing the restraint belt from the connecting bracket and reattaching it to the position suitable for the infant's physique. It is carried out. There is also a child seat that enables position adjustment without removing the restraining belt (Patent Document 1).

Japanese Utility Model Publication No. 6-42464

  However, it is cumbersome to reattach the restraint belt each time in order to adapt the position of the belt to the infant's physique. The child seat of Patent Document 1 includes a seat portion on which an infant is seated and a restraining belt that restrains the infant to form a single unit, which is attached to a vehicle seat or a base portion fixed to the seat. Attached. Accordingly, the number of parts in the seat portion increases, leading to an increase in mass, and the burden on the connecting portion between the seat portion and the base portion increases. In addition, since the operation part for adjusting the position of the restraint belt is provided on the back side of the seat part, adjustment work cannot be performed unless the seat part is removed from the base part and reversed back and forth. There is a risk of being forced to.

  Then, an object of this invention is to provide the child seat which can adjust a position, without removing the restraint belt which restrains an infant.

  Hereinafter, the child seat of the present invention will be described. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

The child seat of the present invention comprises a base portion (2) fixed to a vehicle seat (100), and a seat portion (3) attachable on the base portion in a forward-facing posture with respect to the seat, The base part includes a base body (2a) fixed to the seat, a restraint belt device (4) including a pair of shoulder belts (30) for restraining an infant seated on the seat part, a shoulder belt guide for guiding a shoulder belt (35), and the belt guide position adjusting mechanism located adjustably coupled to the vertical direction of the seat is provided with the shoulder belt guide relative to the base body, said belt guide position The adjustment mechanism includes a restraining means (71) that switches between prohibition of movement of the shoulder belt guide in the vertical direction of the seat and cancellation of the prohibition by operation of the operation unit (71a). By parts are provided on the operable position from the front side of the seat portion so as to face the front of the seat, for solving the above problems.

According to this invention, the restraint belt device and the belt guide adjusting mechanism are provided on the base portion fixed to the vehicle seat. Therefore, the seat portion on which the infant sits is reduced in weight, and the burden on the connecting portion with the base portion is small. Further, a belt guide position adjusting mechanism for adjusting the position of the restraining belt is provided in the base portion, and is provided at a position operable from the front side of the seat portion so that the operation portion of the restraining means faces the front surface of the seat portion. Therefore, it is not necessary to remove the seat portion and reverse it back and forth, and the position can be adjusted in the vehicle regardless of the size of the vehicle space.

  In the child seat according to the present invention, the base body includes a pair of frames (13), and the restraining means is movable up and down along the pair of frames, and has a hole formed in the pair of frames. (13a) may be configured to include a shaft (73) that can be inserted and removed. Since the restraining means for switching the prohibition of the movement of the shoulder belt guide and the release of the prohibition moves up and down between the pair of frames, a sufficient strength can be ensured. Further, since the restraining means is positioned with respect to the frame by the shaft, the position of the shoulder belt guide can be reliably adjusted.

  In the child seat of the present invention, the shoulder belt may be guided from the back side of the pair of frames to the front side of the seat part so as not to interfere with the seat part attached to the base part. In this case, since the shoulder belt does not interfere with the seat portion, the reliability of restraining the infant seated on the seat portion is increased.

The child seat of the present invention is fixed to a vehicle seat (100) in a forward-facing posture, and a pair of shoulder belts (30) for restraining an infant, and a shoulder belt guide (35) for guiding the shoulder belts. A child seat comprising a belt guide position adjusting mechanism for connecting the shoulder belt guide in a position adjustable in the vertical direction of the seat, wherein the belt guide position adjusting mechanism is operated by operating the operating portion (71a). A restraining means (71) for switching prohibition of the movement of the shoulder belt guide in the direction and release of the prohibition, and in a position where the operation part can be operated from the front side of the seat so as to face the front side of the seat By being provided, the above-described problems are solved.

According to the present invention, since the operation portion of the belt guide position adjusting mechanism is provided at a position where the operation portion can be operated from the front side of the seat so as to face the front side of the seat, It is not necessary to adjust the position of the vehicle, and the position can be adjusted in the vehicle regardless of the size of the vehicle space.

  ADVANTAGE OF THE INVENTION According to this invention, the child seat which can adjust the position of a restraint belt can be provided, without removing the restraint belt which restrains an infant.

  First, with reference to FIG. 1, the outline of the child seat concerning one embodiment of the present invention is explained. As shown in FIG. 1, the child seat 1 includes a base portion 2 and a seat portion 3 that is detachably mounted on the base portion 2. The base portion 2 is fixed so as to be in contact with the seat cushion 101 and the seat back 102 of the vehicle seat 100 using a seat belt of the vehicle.

  The base portion 2 is provided with a base body 2a fixed to the seat 100, a restraint belt device 4 that restrains an infant, and a slider 5 that can be adjusted in the longitudinal direction of the seat 100 with respect to the base body 2a. Yes.

  On the other hand, the seat cushion portion 6 is connected to the seat portion 3 via a seat cushion portion 6 that is connected to the slider 5 in a state where the position can be adjusted and removed, and a support shaft 7 that extends in the left-right direction of the seat 100. There is provided a seat back portion 8 that is rotatably connected to the rear end portion and is connected to the base portion 2 in a detachable state on the back side.

  Next, a more specific embodiment of the child seat 1 will be described with reference to FIGS.

  FIG. 2 is a perspective view in which the upper part of the child seat 1 is enlarged and a part thereof is cut. The seat back portion 8 includes a backrest 48 that supports the back of the infant, a headrest 49 that supports the back of the infant, and two upper and lower side supports 50 and 51 that project laterally. The shoulder belt 30 of the restraining belt device 4 is drawn out from the gap between the side supports 50 and 51 to the front side of the seat portion 3. A belt guide 35 for guiding the shoulder belt 30 is provided on the base portion 2. The belt guide 35 is provided through the cover 10 so as to be partially exposed. Further, the operation portion 71a of the position adjusting mechanism that connects the belt guide 35 so that the position of the belt guide 35 can be adjusted up and down is provided at a position that can be operated from the front side of the seat portion 3 so as to face the front surface of the seat portion 3.

  FIG. 3 is a view showing details of the base portion 2 with the seat portion 3 removed. The base part 2 includes a base body 2a. The base body 2a includes a support base 11 as a bottom side support portion and a back frame 12 as a back side support portion extending upward from the rear end side of the support base 11. The back frame 12 includes a pair of main frames 13 rising from both sides of the support base 11 toward the rear, and a connecting portion 14 disposed between the main frames 13.

  Further, a fixing belt guide (sometimes simply referred to as a belt guide) 15 and a lock-off device 16 as a restraining device are attached to each of the pair of main frames 13. The belt guide 15 is configured to fix the shoulder belt portion 104 when the tongue 103A through which the shoulder belt portion 104 of the vehicle seat belt is passed is attached to the buckle 103B and the base portion 2 is fixed to the seat 100 (see FIG. 1). It is for guiding to the back side of the frame 12. The lock-off device 16 is a well-known device that fixes the shoulder belt portion 104 to the base portion 2 by sandwiching the shoulder belt portion 104 guided to the back side of the frame 12 between a pair of claws.

A shoulder belt portion 104 passed between an anchor (not shown) of the vehicle and a fixing position by the buckle 103B is along the belt guide 15 provided on one main frame 13 of the base portion 2, and the back side of the back frame 12. And is sandwiched between lock-off devices 16 provided on the main frame 13 on the opposite side. Thereby, the belt length from the anchor of the waist belt portion 105 to the lock-off device 16 is fixed to a constant value, and the base portion 2 is fixed to the seat 100. The reason why the shoulder belt portion 104 is not passed through the front side of the base portion 2 is to avoid interference between the shoulder belt portion 104 and the shoulder belt 30 of the restraint belt device 4. Note that the belt guide 15 and the lock-off device 16 are attached at the same height of the main frame 13 on the opposite side, in case the relationship between the child seat 1 and the direction in which the shoulder belt portion 104 is pulled out is reversed. Can be changed.

  On the upper surface of the slider 5, a fixing portion 31 of the pair of shoulder belts 30 of the restraining belt device 4 and a fixing portion 33 of the crotch belt 32 of the restraining belt device 4 are provided. These fixing portions 31 and 33 are provided so as to protrude from the upper surface of the slider 5 so that the belts 30 and 32 can be fixed at substantially the same height as the seating surface of the seat cushion portion 6 attached to the slider 5.

  As shown in FIG. 3, a waist belt guide 34 for guiding a waist belt portion 105 of the vehicle is provided at the front end portion of the main frame 13 so as to protrude on both sides of the slider 5. The positions of the waist belt guides 34 in the front-rear direction are determined so that the waist belt portion 105 is separated further forward than the crotch belt fixing portion 33 even when the slider 5 moves to the front end of the movable range. Therefore, the waist belt portion 105 is held by the waist belt guide 34 between the base portion 2 and the seat cushion portion 6 and at a position biased to the front end side of the center portion with respect to the longitudinal direction of the base portion 2. . Thereby, the inclination angle with respect to the horizontal direction of the waist belt portion 105 extending toward the base portion 2 from the anchor and buckle 103B of the vehicle is reduced, and the effect of the waist belt portion 105 restraining the base portion 2 in the front-rear direction is increased. be able to.

  A shoulder belt guide 35 for guiding the pair of shoulder belts 30 of the restraining belt device 4 is provided below the connecting portion 14 of the frame 12. The shoulder belt 30 guided to the back side of the frame 12 by the shoulder belt guide 35 is connected to a single adjustment belt 37 via a connector 36 (see also FIG. 1). As is apparent from FIGS. 1 and 3, the adjustment belt 37 is wound around a connecting shaft 38 parallel to the support shaft 7 attached between the lower ends of the main frame 13, and is interposed between the support base 11 and the slider 5. Further, it is led through a belt adjuster 39 provided at the front end of the slider 5 and pulled out to the front of the child seat 1. The tongue 40 provided on the shoulder belt 30 is fixed to the buckle 41 at the tip of the crotch belt 32, and the tip portion 37a of the adjustment belt 37 is pulled forward, so that it is drawn out between the fixing portion 31 and the shoulder belt guide 35. The length of the shoulder belt 30 can be adjusted to a desired value.

  FIG. 4 shows details of a connecting portion 14 provided on the back frame 12 in order to connect the seat back portion 8 to the base portion 2. The connecting portion 14 has a pair of cross bars 65 spanned between the main frames 13, upper and lower guide rods 66 spanned between the cross bars 65, and guides to the guide rods 66 and the main frame 13. And a slider 67 movable up and down. A central support portion 68 that protrudes forward is provided at the upper center of the slider 67, and pin insertion holes 68 a are formed on both sides (only one side is shown in the figure) of the central support portion 68. A connecting pin 75 that fits in the pin insertion hole 68a of the slider 67 is slidably attached to the back side of each side support 50 of the seat back portion 8 (see FIG. 1). 75 is inserted into a pin insertion hole 68 a provided in the slider 67 of the connecting portion 14, whereby the seat back portion 8 is rotatably connected to the back frame 12 and the connecting pin 75 via the slider 67.

  On the other hand, a slide guide 71 that slides along the main frame 13 is provided below the slider 67. Further, the belt guide 35 described above is provided inside the slide guide 71. Accordingly, the belt guide 35 moves up and down together with the support portions 68 and 69. As a result, the shoulder belt guide 35 can always be positioned in the gap between the side supports 50 and 51 of the seat back portion 8 connected to the slider 67 to prevent the shoulder belt 30 from being pulled out of the seat portion 3.

  Further, the slide guide 71 includes an operation portion 71a. By operating this, the position of the shoulder belt guide 35 is changed with respect to the slider 67, and the pull-out position of the shoulder belt 30 with respect to the seat portion 3 is changed. It can be changed according to the physique. The slide guide 71 constitutes a part of a belt guide position adjusting mechanism that movably connects the shoulder belt guide 35. Details of the belt guide position adjusting mechanism will be described below.

  FIG. 5 is a perspective view showing details of the belt guide position adjusting mechanism. For convenience of explanation, peripheral members such as the cover 10 of FIG. 2, the slider 67 of FIG. 4 and the central support portion 68 are removed and shown. is there. As shown in FIG. 5A, the belt guide position adjusting mechanism includes a base 74 and a slide guide 71 as a restraining means for switching prohibition of movement of the shoulder belt guide 35 and release of the prohibition. ing.

  The base 74 is provided to be slidable with respect to the guide rod 66 in the vertical direction of the seat 100 (see FIG. 1). Further, the shoulder belt guide 35 is attached to the base 74, and shaft pressers 74a and 74b that receive the shaft 73 processed into a substantially U shape and define the moving range thereof are provided.

  The slide guide 71 is disposed along the inside of the frame 13. In addition, a shaft 73 is attached to the slide guide 71 via shaft holders 74 a and 74 b of the base 74. The shaft 73 is attached so that its end is exposed from the slide guide 71.

  In addition, a pair of coil springs 72 are attached between the slide guide 71 and the shaft presser 74a in a compressed state at the respective sides of the slide guide 71 and the shaft presser 74a. Thus, the slide guide 71 is urged by the coil spring 71 a so as to press the frame 13 from the inside of the frame 13 while moving in the left-right direction of the seat 100 with respect to the base 74 together with the shaft 73. Therefore, the end of the shaft 73 exposed from the slide guide 71 is fitted into the plurality of insertion holes 13a formed in the frame 13, and the movement of the shoulder belt guide 35 is prohibited.

  On the other hand, when the prohibition of the movement of the shoulder belt guide 35 is canceled and the position of the shoulder belt guide 35 is changed, first, as shown in FIG. Is pulled inward against the biasing force of the coil spring 72, and the end of the shaft 73 is removed from the insertion hole 13a to cancel the prohibition of movement. And after moving to the position of a dashed-two dotted line, maintaining the cancellation | release state, the operation part 71a is open | released, the edge part of the shaft 73 is fitted to the insertion hole 13a of a movement destination, and the slide guide 71 is connected. . Since a plurality of insertion holes 13a formed in the frame 13 are provided at predetermined locations, the position of the shoulder belt guide 35 can be selectively changed by the belt guide adjusting mechanism.

  Returning to FIG. 2, the seat portion 3 and the base portion 2 are configured such that the operation portion 71 a of the position adjusting mechanism described above is positioned in the gap between the side supports 50 and 51 when these are combined. Accordingly, the position of the shoulder belt guide 35 can be adjusted from the front side of the seat portion 3. Note that the seat back portion 8 is configured so that the gap between the side supports 50 and 51 of the seat back portion 8 can be moved in accordance with the change of the position of the shoulder belt guide 35. For this reason, even after attaching the child seat 1, the position of the shoulder belt guide 35 can be changed without the shoulder belt 30 and the seat back portion 8 interfering with each other.

  This invention is not limited to the above embodiment, You may implement with a various form. For example, in the above embodiment, the child seat that can be separated into the base portion 2 and the seat portion 3 fixed to the seat of the vehicle has been described. However, the child seat having a so-called shell structure in which the base portion and the seat portion are integrated. In addition, the present invention is applicable. Moreover, in the above embodiment, although the child seat which has the reclining mechanism using the slider 5 is mentioned as an example, this invention is applicable regardless of the presence or absence of the said reclining mechanism.

The figure which showed the outline | summary of the child seat which concerns on one Embodiment of this invention. The perspective view which expanded the upper part of the child seat concerning one embodiment of the present invention, and cut the part. The perspective view which removes a sheet | seat part and shows the detail of a base part. The figure which showed the detail of the connection part provided in the back frame in order to connect a seat back part to a base part. The perspective view which showed the detail of the belt guide position adjustment mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Child seat 2 Base part 2a Base main body 3 Seat part 4 Restraint belt apparatus 13 Frame 13a Insertion hole 30 Shoulder belt 35 Shoulder belt guide 71 Restraint means 72 Coil spring 73 Shaft 74 Base 100 Vehicle seat

Claims (4)

A base portion fixed to a vehicle seat; and a seat portion attachable on the base portion in a forward-facing posture with respect to the seat;
The base portion includes a base body fixed to the seat, a restraint belt device including a pair of shoulder belts for restraining an infant seated on the seat portion, and a shoulder belt guide for guiding the shoulder belt; A belt guide position adjustment mechanism for connecting the shoulder belt guide to the base body so that the position of the shoulder belt guide can be adjusted in the vertical direction of the seat ;
The belt guide position adjusting mechanism includes a restraining unit that switches between prohibition of movement of the shoulder belt guide in the vertical direction of the seat and cancellation of the prohibition by operation of an operation unit, and the operation unit is disposed on a front surface of the seat unit. The child seat is provided at a position operable from the front side of the seat portion so as to face the seat. The base body includes a pair of frames, and the restraining means includes a shaft that is movable up and down along the pair of frames and that can be inserted into and removed from holes formed in the pair of frames. The child seat according to claim 1 , comprising: It said shoulder belts, to claim 1 or 2, characterized in that it is guided to the front side of the seat portion from the rear surface side of the pair of frames so as not to interfere with the seat portion attached to said base portion Child seat described. A pair of shoulder belts for restraining an infant, a shoulder belt guide for guiding the shoulder belt, and the position of the shoulder belt guide in the vertical direction of the seat can be adjusted while being fixed to the vehicle seat in a forward-facing posture. In a child seat comprising a belt guide position adjusting mechanism connected to
The belt guide position adjusting mechanism includes a restraining means for switching prohibition of the movement of the shoulder belt guide in the vertical direction of the seat and cancellation of the prohibition by an operation of the operation unit, and the operation unit is located on a front side of the seat. The child seat is provided at a position where the seat can be operated from the front side of the seat.

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