JP5603694B2 - child seat - Google Patents

Description

  The present invention relates to a child seat, and more particularly to a child seat that can be attached to a seat of a vehicle or the like in an appropriate state in order to safely restrain an infant's body in the vehicle.

  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.

  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 child seat can be stably attached to the vehicle seat in each attachment mode.

  For example, in a high-grade child seat, the child seat body is held via a reclining mechanism on a relatively large base that is in close contact with the seat surface. In this type of child seat, a reclining mechanism is used on a base placed in a different direction on the seat of the vehicle, and an appropriate reclining angle is set according to the mounting manner such as forward and backward, respectively. The main body can be fixed, and an appropriate restraint posture for infants can be secured.

  In the child seat described above, the number of parts constituting the reclining mechanism is large, and the manufacturing cost is high. Moreover, since the stable large base which is not influenced by the mounting direction is provided, the weight of the child seat is also heavy. On the other hand, various proposals for stably attaching a child seat as a popular product to a vehicle seat have been made.

  The development point of the popular child seat is to secure a wide bottom of the child seat at each mounting position. As a child seat focusing on this point, a proposal has been made in which a detachable block-shaped leg portion is rotated around a pivot axis in accordance with the mounting direction to change its position (Patent Document 1).

  There is also a child seat that effectively prevents the child seat from rotating forward about the front end of the fixed point due to a frontal collision that occurs when facing forward, and that can secure a large bottom surface of the child seat even when installed backward. It has been proposed (Patent Document 2).

No. 6-7972 JP 2006-151299 A

  In the auxiliary seat disclosed in Patent Document 1, which changes the orientation of the two block-shaped leg portions to correspond to the change in the child seat mounting position, the end surface of the rib 43 is inclined to the opposing surface 53 of the leg portion 51. In order to make contact with the surface 55, the flat portion 45, 46 must be provided and the inside must be stiffened. Further, since the leg portions 51 are independently provided at predetermined positions of the respective ribs 43, it is necessary to sufficiently reinforce the periphery of the two notches 47 into which the engaging protrusions 56 of the leg portions are fitted. Thus, in the child seat disclosed in Patent Document 1, it is necessary to ensure sufficient rigidity for the ribs 43. For this reason, there is a problem that the internal structure of the rib 43 becomes complicated and the molding operation becomes difficult.

  On the other hand, in the child seat disclosed in Patent Document 2, the support leg 6 has sufficient rigidity to increase the stability of the front surface of the bottom of the child seat, but the upper surface is exposed as a part of the product. The upper surface of is finished in a smooth shape that is continuous with other parts, and a hollow portion for operating the central reclining mechanism is formed. However, in order to install the child seat backward, as shown in FIGS. 2 and 4, the upper surface is inverted to become the bottom surface, and constitutes the bottom surface of the child seat together with the second contact portion 4 b. Therefore, in the state in which this member is reversed, as shown in FIG. 2, the contact surface on the seat can be secured, but the flatness of the bottom surface of the child seat cannot be secured. For this reason, the stability when the child seat is fixed is lacking. Moreover, since the inverted member overlaps on the base, there is a problem at the time of use that the seat surface of the child seat becomes high and it becomes difficult for the infant to get on and off. Therefore, the object of the present invention is to solve the problems of the above-described conventional technology, and can substantially utilize the configuration of the arm-shaped rib formed on the conventional child seat, and can provide a stable installation state regardless of the mounting direction. It is to provide a child seat that can be secured.

In order to achieve the above object, the child seat according to the present invention has a shell on which a side on which an infant is seated is covered with a seat cushion, restrains the infant within the seat cushion via restraint means, and holds the back and lower portions of the shell. A child seat fixed through a seat belt , wherein the stiffening member is mounted on the back of the occupant seat. It consists of two arms that are held from the side and a base that continues to the lower end of the arm via an intermediate portion, and two substantially V-shaped portions are formed on the outer edges of the arm inner surface plates of the two arms. is, the leg having the between the two arms, the support surface of the corresponding site and can abut two places of the substantially V-shaped section according to the mounting manner There base stand which is integrally formed on both sides of the main body is rotatably supported, the outer edge of the stiffening member the legs by rotating the base stand in accordance with the attached mode on the passenger seat The bottom surface of the child seat adapted to each attachment mode is configured by the leg portion and a part of the edge portion of the stiffening member.

  The base stand preferably has a rotation pin formed on the outer surface of the main body and is pivotally supported by the arm inner surface plate.

  According to the present invention, by attaching a compact stand to a part of the member for stiffening the shell of the child seat, a part of the bottom surface of the child seat is secured by the leg portion of the stand. Thus, the child seat can be easily fixed to the passenger seat in a forward-facing and backward-facing manner.

The side view and rear view which showed the child seat of this invention. Front, side and back views showing the stand incorporated in the child seat of the present invention Explanatory drawing which showed the attachment state (front facing, back facing) to the vehicle seat of the child seat shown in FIG. Explanatory drawing which showed the holding | maintenance state by the shell and arm which comprise the child seat shown in FIG. 1, and the base stand attached to the arm. The elements on larger scale which expanded and showed the holding | maintenance state to the arm of the base stand shown in FIG.

  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.

  1 shows a rear view and a side view showing a state in which the child seat 1 of the present invention is placed on a flat surface. This state normally corresponds to a state in which the child seat is attached to the vehicle seat in a forward direction. FIG. 1 shows a state in which the side of the synthetic resin shell 3 on which an infant (not shown) sits is covered with a seat cushion 2.

  A stiffening member 10 is attached to the back side of the shell 3 so as to support the shell 3 as shown in FIG. The stiffening member 10 has two arms 11 for supporting the shell 3 formed with a space capable of accommodating infants from the back side, and the curved shell 3 is stably placed on the seat surface at the lower part of each arm 11. And the base 12 installed in the base, and these are integrated with each other through the intermediate portion 13 to support the shell 3. In FIG. 1B, illustration of each member provided on the shell 3 and the arm 11 such as a belt guide for holding the seat belt in a proper position is omitted for the sake of simplification of the drawing. .

  As shown in FIG. 1B, the stiffening member includes an arm 11 arranged in the vertical direction on the back surface of the shell 3, a base 12 that supports the bottom of the shell 3, and an intermediate portion 13 that connects the two. It is a resin product made of the same material as the shell 3 which is molded and has a substantially J-shape as viewed from the side, and is made of a molded product such as polypropylene.

  As shown in FIG. 1A, each arm 11 includes two outer plates 11a, an inner plate 11b, and a plurality of ribs 11c that connect them. The ribs 11c are arranged at a predetermined interval along the longitudinal direction of the arm 11 and play a role of integrating the outer surface plate 11a and the inner surface plate 11b, and each arm 11 has sufficient rigidity and strength.

  As shown in FIG. 1B, the bottom surface 12a of the base 12 is substantially flat so that the child seat 1 can be stably placed on the seat surface of the vehicle seat. A base stand 20 is pivotally supported on the inner surface plate 11 b of the arm 11 at the intermediate portion 13 via a rotation pin 23. The base stand 20 has one surface of a leg portion (which will be described later) that is substantially flush with the bottom surface 12a of the base 12 at the lower end of the arm 11 as shown in each drawing of FIG. Act as part of

  Here, the structure of the base stand 20 is demonstrated with reference to each figure of FIG. FIG. 2 includes a front view, a side view, a rear view, and a partial cross-sectional view for explaining the base stand 20 from various directions. The base stand 20 includes a stand main body 21 and leg portions 22 integrally formed on both side surfaces of the stand main body 21. Both the stand main body 21 and the leg portion 22 are formed of synthetic resin molded parts in which exterior plates 21a and 22a and lattice-shaped stiffening ribs 21b and 22b formed therein are integrally formed. Polypropylene or the like is suitable as the resin, but various resin materials can be used as long as they satisfy the strength and durability as a base stand and are appropriate in terms of molding workability and cost.

  As shown in FIGS. 2A and 2B, the stand main body 21 is a flat box-like body having a substantially trapezoidal shape when viewed from the side, and the width thereof is shown in FIG. Thus, it is substantially equal between the inner surface plates 11b of the two arms 11. On both outer surfaces of the upper part of the stand main body 21, there are formed a rotation pin 23 having a cylindrical protrusion shape with a predetermined diameter and virtually forming a rotation axis, and a lock pin 24 having a smaller diameter than the rotation pin 23. Yes. At this time, the width of the stand main body 21 is substantially equal to the extent that it fits between the inner surface plates 11 b of the two arms 11. For this reason, the rotation pins 23 formed on both side surfaces of the stand main body 21 are virtually rotated in a state where the rotation pins 23 are fitted in bearing holes (not shown) formed between the inner surface plates 11 b of the arm 11. The stand body 21 functions as a shaft, and is supported by the two arms 11 so as to be rotatable around the rotation pin 23.

  As shown in FIG. 2A, the leg portion 22 is a box-shaped body whose side view has a substantially trapezoidal shape, and the width thereof is a member formed integrally with the lower portion of the side surface of the stand body 21. The leg portion 22 is substantially equal to the width between the outer surface plate 11a and the inner surface plate 11b of the arm 11. Further, as shown in FIGS. 2C and 2D, support ribs 25 having a shape different from the lattice-shaped stiffening ribs 22 b are formed on the stand body 21 side of the internal space of the leg portion 22. . As will be described later (see FIG. 5), the support rib 25 supports the load applied from the arm 11 by the lower end of the inner surface plate 11b of the arm 11 coming into contact with a predetermined support surface when the base stand 20 is supported. Fulfill. For this reason, the shape of the support rib 25 is set so that a part of the support rib 25 abuts against the lower end of the arm 11 in the case where the child seat 1 is attached forward to the seat and the case where the child seat 1 is attached backward. In the present embodiment, as shown in FIG. 2D, the shape of the support rib 25 has two support surfaces 25a and 25b, and is substantially S-shaped in side view. In addition, the shape can be appropriately determined in consideration of workability and strength, as long as two support positions (surfaces) are functionally secured.

  The lock pin 24 is a cylindrical protrusion having a smaller diameter than the rotation pin 23 provided between the rotation pin 23 on the side surface of the stand main body 21 and the mounting position of the leg portion 22. The lock pin 24 is fitted into a holding hole (not shown) formed in the arm 11 when the base stand 20 is rotated about the rotation pin 23 and rotated to the above-described two support positions. The base stand 20 serves to fix the base stand 20 to each support position. In this embodiment, when the base stand 20 is rotated, the lock pin 24 moves while the tip of the lock pin 24 abuts the inner surface of the arm 11 and slightly deflects the lower end of the arm 11 to hold the holding hole at the support position. And is locked.

  Hereinafter, an attachment mode in which the direction of attachment to the passenger seat of the child seat 1 using the base stand 20 is forward-facing and backward-facing is described with reference to FIGS. 3 (a) and 3 (b). In each figure of FIG. 3, the outer surface plate 11a of the arm 11 and the base 12 is shown like FIG.1 (b). The child seat 1 is fixed to the seat using a seat belt provided corresponding to each seat, but in the figure, illustration is omitted for the sake of simplification.

  For example, when the child seat 1 is mounted forward, the base stand 20 is positioned at a support position where the bottom surface 22c of the leg portion 22 of the base stand 20 is substantially flush with the bottom surface 12a of the base 12 as in FIG. Let In this state, the rear surface of the arm 11 is brought into contact with the backrest 51 of the seat 50, and the child seat 1 is fixed on the seat 50 using a seat belt (not shown).

  On the other hand, when mounting backward, the base stand 20 is rotated around the rotation pin 23 from the position of FIG. 1B so that the front surface 22d of the leg portion 22 of the base stand 20 becomes a new bottom surface. To do. At this time, it becomes substantially flush with the outer edge 13a of the intermediate portion 13 between the lower end of the arm outer surface plate 11a and the base 12, and a new bottom surface is formed. In this state, the foot side of the child seat 1 is brought into contact with the backrest 51 of the seat 50, and the child seat 1 is fixed on the seat 50 using a seat belt (not shown) as shown in FIG.

  Next, an aspect in which the leg portion 22 of the base stand 20 supports a part of the arm 11 inner surface plate 11b will be described with reference to FIGS. 4 (a), 4 (b) and FIG. 4A and 4B show a state in which the seat cushion of the child seat 1 is removed and the shell 3 is supported by the arm 11 and the base 12 along the cross-sectional line of FIG. FIG. 5 is an enlarged view of the positional relationship between the arm 11 inner surface plate 11b and the support rib 25 in the leg portion 22 of the base stand 20 in each attachment state of the child seat 1 (forward and backward).

  The outer shape of the intermediate portion 13 between the lower end of the inner surface plate 11b of the arm 11 and the base 12 is a bearing that supports a rotation body 23 (shown in phantom lines in FIGS. 4 and 5) of the base stand 20. It consists of a substantially semicircular edge 14 centered on the hole and substantially V-shaped edges 15 and 16 continuous on both sides thereof (FIGS. 4A and 4B). In the state of being attached forward (FIG. 4A), the support rib 25 of the leg 22 abuts on the lower end of the substantially V-shaped edge 15 on the lower side of the edge 14, and part of the load on the child seat 1 is the leg. Supported by part 22. On the other hand, in the state for rearward mounting (FIG. 4B), the support rib 25 of the leg portion 22 contacts the upper side of the upper substantially V-shaped edge portion 16. When attached to the seat 50 backward at this position (FIG. 3B), a part of the load of the child seat 1 is transmitted to the leg portion 22 via the substantially V-shaped edge portion 16 of the arm 11 inner surface plate 11b.

  FIG. 5 is an explanatory diagram showing the holding state of the base stand 20 shown in FIGS. 4A and 4B in an enlarged manner for the purpose of explanation. As described above, in the state of being attached forward, the substantially V-shaped edge 15 of the inner surface plate 11b of the arm 11 comes into contact with the support rib 25a of the leg 22 of the base stand 20 and contacts the leg 22 of the base stand 20. Load is transmitted. On the other hand, when attaching backward, the base stand 20 is rotated upward in the figure and held at the position shown in FIG. In this state, the substantially V-shaped edge 16 of the arm 11 contacts the support rib 25 b of the leg 22 of the base stand 20. In this state, when the child seat 1 is installed with the direction along the virtual line L in FIG. 3B or FIG. 4B as the bottom surface, the load from the arm 11 of the child seat 1 is applied to the leg portion 22 of the base stand 20. It is transmitted and supported by the support rib 25b of the leg portion 22, and other portions of the support rib 25 abut against the seat surface, and the load from the child seat 1 is the edge portion 13a of the intermediate portion 13 at the lower end of the arm outer surface plate 11a. And the leg 22.

  The arrangement shape, thickness, and the like of the support rib 25 in the leg portion 22 of the base stand 20 described above are other than the embodiment shown in FIG. 5 as long as the contact portion on the arm 11 side and the load can be transmitted smoothly. Needless to say, it can be set as appropriate in consideration of load resistance and ease of molding.

  Further, the shape of the base stand 20 of the present embodiment is as shown in FIGS. 2A and 2B. For example, instead of the rotation pin 23 formed integrally with resin, it penetrates between the inner surface plates 11b of the opposing arms 11. It is also possible to use a steel rod to attach both ends of the nut at the position of the arm inner surface plate 11b. Moreover, it can replace with the lock pin mechanism fitted to a hole, and can also employ | adopt the lock mechanism etc. which locked the latching means to the notch part. Further, the shape of the leg portion 22 includes members corresponding to the support rib 25 having the above-described function, and has various shapes as long as it has a shape and size that can secure a sufficient contact area on the seat. It can be.

  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 3 Shell 10 Stiffening member 11 Arm 11a Arm outer surface plate 11b Arm inner surface plate 12 Base 13 Middle part 20 Base stand 21 Stand main body 22 Leg part 23 Rotation pin 24 Lock pin 25 Support rib

Claims (2)

A side on which an infant is seated is covered with a seat cushion, and includes a shell for restraining the infant within the seat cushion via restraint means, and a stiffening member for holding the back and lower portions of the shell, and facing forward on the passenger seat In the child seat that is fixed through the seat belt in an attachment aspect comprising an aspect attached to the rear and an aspect attached backward .
The stiffening member (10) is composed of two arms (11) that hold the shell from the back side, and a base (12) that continues to the lower end of the arm via an intermediate portion. Two substantially V-shaped portions (15, 16) are formed on the outer edge of each arm inner surface plate (11b) of the arm (11),
Between the two arms (11), there are two support surfaces (25a, 25b) that can come into contact with corresponding portions of the substantially V-shaped portions (15, 16) according to the mounting mode. A base stand (20) in which legs (22) are integrally formed on both sides of the body is pivotally supported.
The base stand is rotated in accordance with the mounting manner on the passenger seat to move the leg portion along the outer edge of the stiffening member, and the bottom of the child seat adapted to each mounting manner is attached to the leg portion. And a part of the edge of the stiffening member. 2. The child seat according to claim 1 , wherein the base stand has a rotation pin formed on an outer surface of the main body and is pivotally supported on the arm inner surface plate.

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