JP2002087121A - Child seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight and highly air-permeable child seat. SOLUTION: A seat frame 10 comprises two right and left side frames 11; a rear frame 12 for connecting an approximate midway of both side frames 11; a head rest 21 assembled between upper ends of both side frames 11; and a cushion frame 17 assembled between lower ends of both side frames 11. A net 31 is provided on the seat frame 10 to constitute the child seat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat used when an infant rides on a car.

[0002]

2. Description of the Related Art A conventional child seat generally has a bucket shape in which a seat back portion and a seat cushion portion are integrated, and a Y-shaped shoulder belt is provided from the seat back portion to the seat cushion portion. Such a child seat is described in, for example, Japanese Utility Model Laid-Open No. 5-67533. The bucket-type child seat described in the above publication is
A bucket-type frame in which the seat cushion portion and the seat back portion are integrally formed, a cushion pad made of foam such as chip urethane or slab urethane set on the surface thereof, and a cover that covers the cushion pad and the frame. It is composed of an epidermis and the like. The bucket type frame is generally made of a resin product obtained by injection molding or blow molding.

[0003]

The child seat is:
The bucket-type frame having the above-described configuration is placed on a vehicle seat provided in an automobile and is used in a state of being fixed with a vehicle seat belt. Since the whole part is wrapped around, there is a problem in that the weight is large, the usability is poor, the ventilation is poor, and the infant gets stuffy.

[0004] The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a lightweight and highly breathable child seat.

[0005]

In order to achieve the above object, a child seat according to the present invention has a structure as described in each claim. Here, for the terms described in each claim and the detailed description of the invention,
Interpretations are as follows unless otherwise limited. (1) The term "net" includes, in addition to a net formed by knitting a thread or the like, a net formed by joining intersections of thread-like objects arranged in a net or a porous sheet. Therefore, according to the first aspect of the present invention, since the seat cushion portion and the seat back portion are both formed by the net, the seat frame has a hollow structure as a result, and the weight is significantly larger than that of the conventional bucket type. Decrease. For this reason, the child seat is significantly reduced in weight. In addition, a child seat with high air permeability can be provided by adopting the net structure. Infants are more likely to sweat than adults, and therefore, by improving the ventilation, the butt and back of the infant can be released from stuffiness and a comfortable sitting feeling can be given.

According to the second aspect of the present invention, at least the left and right side frames of the child seat are formed by pipes.
Compared to conventional resin molded products that make up the frame,
Manufacturing costs can be reduced. That is, in the case of pipe, since it can be manufactured by performing processing such as bending or cutting using inexpensive production equipment, a bucket type frame is manufactured by injection molding or blow molding using an expensive molding die. The cost can be reduced as compared with the related art.

According to the third aspect of the present invention, the mounting means provided for extending the net to the seat frame includes a hard member disposed along the width direction of the net. Accordingly, when the net is stretched, the load applied to the net can be dispersed while ensuring the uniformity of the tension.

[0008] In this case, the hard member is preferably a rod-shaped member that is passed through a hanging bag provided on the net, as described in claim 4, and as described in claim 5, It is preferable that the plate is provided so as to extend in the width direction of the net. In any case, it is effective for equalizing the tension of the net when the net is stretched on the seat frame.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front perspective view of the child seat according to the present embodiment, and FIG. 2 is a rear perspective view thereof. In the child seat 1 according to the present embodiment, a seat cushion portion 1a and a seat back portion 1b are configured by a net skin 30 stretched over a seat frame 10. Hereinafter, the structures of the seat frame 10 and the net skin 30 will be mainly described with reference to an exploded perspective view of FIG. 3, a longitudinal sectional view of FIG. 4, and FIGS.

The seat frame 10 has two left and right side frames 11 each formed of a metal pipe having a circular cross section, and the two side frames 11 are connected to each other at an intermediate portion in a longitudinal direction, and a rear leg (seat) is provided. , A cushion frame 17 assembled between lower ends of side frames 11 to form front legs (seats), and a headrest assembled between upper ends of side frames 11. 21.

The rear frame 12 is bent into a substantially concave shape, and its upper right and left ends are joined to each other at approximately the middle of the left and right side frames 11 in the vertical direction by means of rivets 27 (or screws) or the like. Specifically, as shown in FIG. 3, in a state where the end of the rear frame 12 and the reinforcing plate 13 are overlapped with the side frame 11, they are sandwiched from both right and left sides by a resin outer cover 14 for cosmetic use. , A plurality of locations are fixed by rivets 27. That is, the side frame 11 and the rear frame 12 are assembled in a substantially "human" shape in a side view.

The cushion frame 17 is, for example, a hard resin molded product made of polypropylene, has a plane area occupying the front upper surface of the seat cushion portion 1a, and the lower end of the side frame 11 is inserted into both side portions of the upper surface. In this state, they are connected by joining means such as rivets 18.
In addition, the cushion frame 17 has a predetermined height, and is formed in a substantially U-shaped cross section (see FIG. 4) in which a central portion is depressed rearward and an upper and lower portion is protruded forward to ensure the appearance of the design. And its lower surface is a ground plane. In the concave portion of the cushion frame 17, cut-out openings 17a are provided at three places in the width direction for a net mounting operation to be described later.

The headrest 21 is, for example, a hard resin molded product made of polypropylene, and is formed in a hollow shape having a substantially elliptical cross section as shown in FIG. 4, and the upper ends of the left and right side frames 11 are inserted into both sides thereof. And fixed by connecting means such as rivets 22. An elongated plate 23 made of hard resin (hereinafter, referred to as a J hook) integrally having a J-shaped hook for attaching a net extending over substantially the entire width is joined to a rivet 24 or the like on the rear lower outer surface of the headrest 21. It is fixed by means (see FIG. 4).

On the other hand, as shown in FIG. 3, the net skin 30 is mainly composed of a net 31 formed in a vertically long and substantially bucket shape which constitutes the seat cushion portion 1a and the seat back portion 1b. The net 31 has a flat portion for a seat cushion portion, a vertical portion for a seat back portion, and left and right side portions, for example, by connecting a plurality of three-dimensionally cut pieces by appropriate joining means such as sewing. Can be finished in bucket shape. And the net skin 30 is provided with a headrest cover 33 connected to the terminal of the vertical portion on the upper side of the net 31 and a seat cushion cover 36 connected to the terminal of the flat portion on the lower side.
Further, a structure is provided in which a cylindrical bag portion 32 is provided along the upper edge of the side portion.

As shown in FIG. 7, the bag portion 32 is formed from a sheet in which a cushion pad made of urethane foam is covered with a skin. It is sewn with this sandwiched. The bag portion 32 is set for attachment to the side frame 11.

The headrest cover 33 is made of a sheet in which a cushion pad made of a foam material is covered with a skin, and is formed in a bag shape with an open lower side as shown in FIGS. 4 and 6, and a front inner surface of an opening edge. Has an elongated plate 34 made of hard resin and integrally provided with a J-shaped hook over the entire width.
(Hereinafter, referred to as J hook) are stacked from the rear side so as to sandwich the net terminal, and are fixed by joining means such as sewing. Further, a magic tape (registered trademark) 35 is provided on the rear inner surface of the opening edge of the headrest cover 33 and the rear surface of the net 31.

The seat cushion cover 36 is made of a sheet in which a cushion pad made of a foam material is covered with a skin, like the headrest 21, and can wrap the upper part of the cushion frame 17 as shown in FIGS. It has a possible plane area. The rear end portion is sewn on the lower end edge of the net 31 and three plates 37 (hereinafter, referred to as J hooks) made of hard resin integrally having J-shaped hooks are arranged side by side at the front end edge. Has been sewn. It should be noted that a J hook 34 provided on the headrest cover 33 and a J hook provided on the seat cushion cover 36 are provided.
The hook 37 corresponds to a mounting means for the seat frame 10 of the present invention.

The net 31 is the seat cushion 1.
A hanging bag 39 into which a pipe 38 as a rod-shaped member made of a hard material is inserted is sewn over the entire width on the back side at the boundary between the a and the seat back portion 1b. Two mounting belts 40 are mounted on the pipe 38 in the hanging bag 39, and the rear frame 1 is mounted on the mounting belt 40.
A wire 41 is attached for attachment to the cable 2. The hanging bag 39 containing the pipe 38 and the wire 4
The attachment belt 40 provided with the seat frame 1 according to the present invention.
0 corresponds to the mounting means.

The assembling of the net skin 30 configured as described above to the seat frame 10 is performed in parallel with the assembling of the seat frame 10. First,
The left and right side frames 11 are connected to the left and right bag portions 3 of the net 31.
Insert 2 Then, the headrest 21 is provided at the upper end of the side frame 11 and the cushion frame 1 is provided at the lower end.
7 and the side frame 11
The rear frame 12 is attached to the intermediate portion (the exposed portion below the bag portion). Thereafter, the headrest 21 is covered with the headrest cover 33, and the J hook 34 at the upper edge of the net is hooked on the J hook 23 of the headrest 21. In addition, the seat cushion cover 36 is put on the upper surface so as to be wound around the upper convex portion of the cushion frame 17, and three J hooks 37 are inserted into the opening 17a of the cushion frame 17 from the upper surface, and the opening 17a is formed. Hook on the edge of. Thereafter, the rear frame 12 is attached to the exposed portion of the side frame 11. Next, the wire 41 of the mounting belt 40 is inserted into the mounting hole 12 a provided in the rear frame 12 and locked. Thus, the net skin 30 is stretched with a predetermined tension applied to the side frame 11, the headrest 21, the cushion frame 17, and the rear frame 12 of the seat frame 10, and the child seat as shown in FIGS. 1 is configured.

In addition, the child seat 1 according to the present embodiment has a structure shown in FIG. 1 for fixing the child seat 1 on a vehicle seat and protecting the abdomen of an infant.
The impact shield 45 shown in FIG. The impact shield 45 is connected to the left and right side frames 1.
1 is formed in a substantially block shape having a width slightly wider than the interval of 1 and a vertical width corresponding to the abdomen of the infant, and the headrest 21 is arranged in front of the side frame 11.
It is configured to be held by a substantially gate-shaped shield holder 48 that is attached later to be rotatable in the vertical direction via a pin 49.

The impact shield 45 is formed in a substantially U-shape in side view, having a concave portion 46 on the front side.
The rear side (infant's abdomen side) is formed by a cushion pad and a flexible portion 45a made of a skin covering the cushion pad,
The front side is formed by a hard portion 45b as a belt guide made of a panel made of hard resin. Then, the impact shield 45 is held by fitting the recess 46 into the front bar 48 a of the shield holder 48. In addition, on both side portions in the width direction of the hard portion 45b,
An engagement groove 47 through which the vehicle seat belt S can be inserted is formed.

The child seat 1 configured as described above is set on a vehicle seat via a vehicle seat belt S (see FIG. 9). That is, in use, the rear frame 12 and the cushion frame 17 are placed on the seat cushion portion of the vehicle seat with the rear end surface of the headrest 21 in contact with the seat back portion of the vehicle seat (not shown). I do. In this state, the infant is seated on the child seat 1, and then the recess 46 of the impact shield 45 is fitted into the front bar 48a of the shield holder 48.
5 is arranged on the side frame 11 (or on the abdomen of the infant). Next, the three-point support type vehicle seat belt S provided on the vehicle side is pulled out and fixed. That is, as shown in FIG.
And the shoulder belt S2 are pulled out, and both belts S1, S
After the two are overlapped and passed through the engagement groove 47 of the impact shield 45, the tongue plate T at the belt end is locked to the buckle B. Thus, the child seat 1 is restrained by the vehicle seat belt S via the impact shield 45, and the infant is fixed to the vehicle seat together with the child seat 1, thereby ensuring the safety of the infant during traveling of the vehicle.

Now, in the child seat 1 according to the present embodiment used as described above, since both the seat cushion portion 1a and the seat back portion 1b are constituted by the net 31, ventilation for the buttocks and the back of the infant is provided. Nature is secured. For this reason, an infant can be protected from stuffiness. Further, since the side frame 11 of the seat frame 10 is formed of a pipe, the contact surface with the infant can be reduced and high air permeability can be obtained.
Further, in the present embodiment, the seat frame 10 is formed by forming the side frame 11 from a pipe and connecting the upper ends thereof with the headrest 21 and connecting the lower ends thereof with the cushion frame 17. In addition, the seat frame 10 has a hollow structure, and the weight is significantly reduced as compared with the conventional bucket type frame structure. As a result, the lightweight child seat 1 is provided.

Further, when the side frame 11 is formed of a pipe, the manufacturing cost can be reduced as compared with the case where the frame is formed of a conventional resin molded product. That is,
In the case of a resin molded product, equipment costs are high due to the need for expensive molding dies, but in the case of the present embodiment, bending and cutting of pipes is inexpensive. Since it can be performed by equipment, manufacturing costs can be reduced.

In this embodiment, the net skin 30 is attached to the headrest 21 and the cushion frame 17 of the seat frame 10 by using the J hooks 34 and 37, respectively.
The attachment work can be easily performed, and when the J hooks 34 and 37 are formed of a hard material extending in the width direction of the net 31, the tension of the net 31 can be made uniform. In particular, the net 3 for the rear frame 12
As an attachment structure 1, a hanging bag 39 containing a pipe 38 is provided at the boundary between the seat cushion 1a and the seat back 1b over the entire width of the net 31, and an attachment belt 40 is hooked on the pipe 38 and attached to the rear frame 12. With the configuration, the tension of the net 31 can be made uniform, and the load acting on the net 31 can be efficiently dispersed.

Next, another embodiment shown in FIG. 10 will be described. This embodiment is a modified example of the structure for attaching the net 31 to the rear frame 12, in which the attachment belt 40 is fixed to the rear frame 12 by rivets or screws 50. In other respects, the configuration is the same as in the above-described embodiment.

It should be noted that the present invention is not limited to the illustrated embodiment, and can be appropriately changed without departing from the gist of the present invention. For example, in the present embodiment, the side frame 11 is configured by a pipe. However, the side frame 11 does not necessarily need to be a pipe, and may be configured by a solid rod or a plate. In the present embodiment, the protection of the infant is performed by the impact shield 45, and the fixing of the child seat 1 is performed by the vehicle seat belt S and the impact shield 45. However, the means for protecting the infant and fixing the child seat 1 is as follows. It is not particularly limited to the above structure. It is also possible to provide a Y-shaped shoulder belt similar to the conventional one to protect the infant, and to fix the seat frame 10 directly to the vehicle seat belt S.

In this embodiment, the headrest cover 33 and the seat cushion cover 36 are joined to the net 31.
3 and the seat cushion cover 36 can be removed from the net 31 to change to a structure that can be washed.
A configuration in which the entirety other than 1 is covered by a detachable seat cover that is detachable may be adopted. Also, the cushion frame 17
The entire seat frame including the headrest 21 and the headrest 21 may be formed into a pipe. As means for attaching the net skin 30 to the cushion frame 17 and the headrest 21 of the seat frame 10, J hooks 34 and 37 are used.
However, the attachment means is not limited to the J hook,
For example, fixing means such as rivets and screws may be used.

[0029]

As described in detail above, according to the present invention,
Since the seat cushion portion and the seat back portion are configured by the net, a lightweight and highly breathable child seat can be provided.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a child seat according to the present embodiment.

FIG. 2 is a rear perspective view of the same.

FIG. 3 is an exploded perspective view showing a seat frame and a net skin of the child seat.

FIG. 4 is a vertical cross-sectional view at the center of the child seat.

FIG. 5 is a perspective view showing a structure for attaching a net to a rear frame.

FIG. 6 is a sectional view of a headrest cover.

FIG. 7 is a sectional view of a bag portion.

FIG. 8 is a sectional view of a seat cushion cover.

FIG. 9 is a front perspective view showing a usage mode of the child seat.

FIG. 10 is a perspective view showing another embodiment of the structure for attaching a net to a rear frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Child seat 1a Seat cushion part 1b Seat back part 10 Seat frame 11 Side frame 12 Rear frame 17 Cushion frame 21 Headrest 30 Net skin 31 Net 32 Bag part 33 Headrest cover 36 Seat cushion cover 45 Impact shield 48 Shield holder

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuhiro Sasaki 2-1-1 Toyota-cho, Kariya-shi, Aichi F-term in Toyota Industries Corporation (reference) 3B087 CE07 DE05

Claims (5)

[Claims] 1. A seat cushion part and a seat back part, wherein the seat cushion part and the seat back part are
A child seat formed by a net stretched over a seat frame surrounding the periphery. 2. The child seat according to claim 1, wherein at least the left and right side frames of the seat frame are formed by pipes made of a hard material. 3. The child seat according to claim 1, wherein said net is provided with means for attaching to said seat frame, and said attaching means is provided along a width direction of said net. A child seat comprising a hard member. 4. The child seat according to claim 3, wherein the rigid member in the attachment means is a rod-shaped member that is passed through a hanging bag formed in the net. 5. The child seat according to claim 3, wherein the hard member in the attaching means is a plate joined along a width direction of the net.