JP3462160B2 - Child seat mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat attachment device.

[0002]

2. Description of the Related Art As a rear floor structure of a vehicle body, as shown in FIGS. 6 and 7, a raised portion 22 is formed so as to be upwardly raised for disposing a suspension mechanism on both sides of a rear portion of a rear floor panel 21. It is known that a recess 23 used as a storage space for a spare tire 24 or the like is formed between them.

As an ISO standard for mounting a child seat on a vehicle seat, as shown in FIG. 8A, a child seat 33 is placed on a seat cushion 31 of the vehicle seat 30, and the rear seat cushion 31 is installed. At the rear end and at the lower end of the seat back 32,
As shown in FIG. 8 (b), a child restraint 33 in which a fixing bracket 27 formed by bending a round bar into a hat cross-sectional shape is fixedly arranged on the vehicle body side and arranged on a seat cushion 31.
It has been proposed that the tip of the fixing member 27 is inserted into a locking groove 36 provided at the rear end of the connecting tool 35 extending rearward from the lower end of the rear part to be engaged and fixed.

When mounting the fixing brackets 27 (27a, 27b) on the left and right sides of the rear floor panel 21 one by one, as shown in FIGS. 6 and 7, the outer fixing brackets 27a of each pair are raised. The base is welded and fixed to the upper surface of the front end of the portion 22, and the inner fixing metal fittings 27b of each pair are attached to the front end surface 23a of the recess 23 by welding and base. Also,
Rear seat back center hinge 28 (only shown in FIG. 7)
Is erected from the bottom of the front end of the recess 23.

However, in the structure as shown in FIGS. 6 and 7, the tip of the fixing metal fitting 27 (27a, 27b) is extended upward from its mounting portion in order to position it at a predetermined position. Therefore, it is necessary to increase the rigidity of the mounting part in order to secure a predetermined strength, and it is necessary to increase the plate thickness of the mounting part, and it is necessary to add another bracket for reinforcement, which is disadvantageous in terms of cost. There is a problem.

Further, since it is necessary to secure the mounting pitch accuracy for each pair of the fixing brackets 27, a base bracket for connecting the pair of fixing brackets 27a, 27b having different mounting states is required, or the mounting bracket is complicated at the time of mounting. There is a problem in that the cost of parts and the cost of mounting become high because a jig is required.

In order to solve such a problem, the present applicant previously disclosed in Japanese Patent Application No. 11-312255 that a cross member extending in the vehicle width direction is provided above a rear floor panel, and a child seat is attached to the cross member. We propose a structure with a fixed metal fitting.

[0008]

However, since the cross member is fixed to both sides of the vehicle body only at its both ends, the mounting span is long and the cross member does not move greatly when a load is applied from the child seat to the fixing bracket. In order to secure such a predetermined supporting rigidity, consideration must be given to increasing the plate thickness of the cross member, which causes a problem of a large weight and a high cost.

In view of the above problems of the prior art, it is an object of the present invention to provide a child seat mounting apparatus capable of mounting a metal fitting for a child seat with a required rigidity while ensuring a required rigidity. .

[0010]

A child seat mounting apparatus of the present invention has a cross member extending in the vehicle width direction above the floor panel to fix both ends to both side portions of the vehicle body, and an intermediate portion thereof to the floor panel. Is fixed to a support bracket that supports a seat cushion or a seat back fixed to the cross member, and a fixing metal fitting for fixing a child seat placed on the seat arranged in front of the cross member is attached to the cross member. Since the middle part of the cross member is supported on the floor, high support rigidity can be secured even with a lightweight and inexpensive cross member, and the load applied from the child seat during a frontal collision acts on the cross member via the fixing bracket. Even if it does not significantly deform, the supporting rigidity of the child seat can be secured. Further, even if the load loaded on the rear portion moves forward due to sudden braking or the like and collides, there is no fear of deformation.

When the cross member is fixed to the support bracket in a state of being brought into contact with the support bracket from the rear, the support bracket receives the forward load applied to the cross member from the child seat, so that high support strength can be obtained. It is also easy to process and assemble.

If the support bracket is a support bracket for the pivot pin of the seat back, the support bracket for the pivot pin of the seat back has a structure that can be received from the rear by the cross member. The load applied is shared by the cross members, and seat rigidity is secured.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a child seat mounting apparatus of the present invention will be described below with reference to FIGS.

In FIGS. 1 and 2, 1 is a rear floor panel, and 2 is a rear seat disposed on the front portion thereof. A cross member 3 is arranged above the rear floor panel 1 and immediately behind the seat cushion 2a in the rear seat 2. The cross member 3 is composed of a pipe member 3a having a substantially entire length and mounting brackets 3b fixed to both ends thereof. The mounting bracket 3b is composed of a relatively short member having a rectangular groove shape with a shallow cross section, and an end portion of the pipe member 3a is fixed to an inner portion in the vehicle width direction of the mounting bracket 3b.
The vehicle width direction outer side portion is configured to be fixed to the rear floor panel 1 with a bolt 4. Also, cross member 3
The seat back 2b of the rear seat 2 stands up at the intermediate position of
It is coupled to and supported by a support bracket 6 that supports a pivot pin 5 that supports the device so that it can be laid down. That is, the support bracket 6 is fixed to the center position in the vehicle width direction on the rear floor panel 1 by the bolt 7, and the support bracket 6 and the cross member 3 are brought into contact with the support bracket 6 from the rear so that they are integrally formed. Are combined.

To the cross member 3, two pairs of fixing metal fittings 8 are fixed at predetermined intervals in order to fix a child seat (not shown) placed on the seat cushion 2a of the rear seat 2. The fixing metal member 8 is formed by bending a round bar material into a substantially U-shape, and forming an opening thereof in an arc shape along the outer periphery of the pipe member 3a of the cross member 3 so as to be formed on the outer surface of the pipe member 3a. Are integrally fixed by welding.

According to the above structure, since the middle portion of the cross member 3 is supported by the rear floor panel 1 via the support bracket 6, the cross member 3 having the light and inexpensive pipe member 3a as the main member is used. However, since a high support rigidity can be ensured and, in particular, the cross member 3 is fixed to the support bracket 6 while being brought into contact with the support bracket 6 from the rear, the support bracket 6 has a structure in which a forward load applied to the cross member 3 from the child seat is received. Therefore, high supporting strength can be obtained. Therefore, even if a large load acts from the child seat (not shown) on the cross member 3 through the fixing metal fittings 8 in a frontal collision, the cross member 3 is impacted.
Does not significantly deform, and the child seat can be supported while ensuring high support rigidity.

Further, as shown in FIG. 2, the load 9 loaded in the rear vehicle compartment 10 at the rear of the rear seat 2 is moved forward as indicated by the white arrow due to sudden braking or the like, and the cross member 3 is moved forward.
There is no fear that the cross member 3 will be deformed even if it collides with.

Further, since the support bracket 6 supporting the pivot pin 5 pivotally supporting the seat back 2b of the rear seat 2 is received from the rear by the cross member 3, the load applied to the seat back 2b at the time of the backrest is cross member. Therefore, the rigidity of the rear seat 2 is ensured.

Further, since all the fixing members 8 are fixed to the cross member 3, the workability is low and the cost is low without using a base bracket or a complicated jig for positioning the fixing members 8 with a predetermined pitch accuracy. Good, it is possible to mount the fixing metal fittings 8 of each pair with high pitch accuracy. Further, since all the fixing metal fittings 8 are attached to the pipe member 3a, they are all the same parts, and the die cost thereof can be greatly reduced and the cost can be reduced. Further, since the fixing metal fittings 8 are attached to the cross member 3 arranged immediately after the seat cushion 2a, the distances to the tips of the respective fixing metal fittings 8 are shortened, so that high attachment rigidity can be secured.

Further, the cross member 3 is attached to the support bracket 6
Since it is fixed in contact with the
Assembly is also easy.

Next, another specific configuration example of this embodiment will be described with reference to FIGS. As shown in FIGS. 4 and 5, at the rear portion of the rear floor panel 1, raised portions 11 for arranging the suspension mechanism are formed upward on both sides, and a recess 12 is formed between them. The cross member 3 is disposed above the front end of the recess 12 and both ends thereof are fixed to the upper surface of the front end of the raised portion 11. Further, a support bracket 6 of a pivot pin 5 that pivotally supports the seat back 2b is provided from the front end of the central position of the recess 12 to the rear end of the front floor surface thereof. At the lower part of the rear floor panel 1, a reinforcing member 1a is arranged from the lower surface of the front end of the recess 12 to the lower surface of the rear end of the floor surface, and a backing member 1b is arranged at the fixed portion of the support bracket 6, and a bolt 7 The nut member 1c for screwing is fixed.

The cross member 3 is composed of a pipe member 3a and mounting brackets 3b to which both ends of the pipe member 3a are fixed. Both ends of the pipe member 3a are covered with an inverted U-shaped fixing band 13 to form a pipe member. The lower end of 3a and both lower ends of the fixing band 13 are fixed to the mounting bracket 3b by welding. The mounting bracket 3b includes a rectangular groove-shaped connecting and fixing portion 14 having a shallow cross-sectional shape at an inner portion in the vehicle width direction, an outer protruding portion 15, and an outermost fixing portion 16, and the connecting and fixing portion 1 is provided.
The pipe member 3a and the fixing band 13 are fixed to the inner portion of the bolt 4, and the bolt hole 17 of the bolt 4 for fixing the mounting bracket 3b is formed in the outer portion and the fixing portion 16.

Further, in this example, of the two pairs of fixing fittings 8, the fixing fitting 8 on the inner side in the vehicle width direction is fixed to the pipe member 3a as in the example of FIGS. 1 and 2, but on the outer side in the vehicle width direction. The fixing metal fitting 8 is fixed to the upper end of the protrusion 15. As described above, the fixing metal fitting 8 is not limited to the pipe member 3a, but may be the cross member 3
It is fixed in an appropriate position by the construction of.

The support bracket 6 has a first bracket member 18 having a mounting plate 18a installed on the rear end of the floor surface and a supporting plate 18b standing upright in an inverted T shape from the mounting plate 18a. The mounting plate portion 19a installed along the rear floor panel 1 from the mounting plate 18a to the bottom surface of the front end portion of the recess 12 and the supporting plate 1 from the mounting plate portion 19a.
8b and a second bracket member 19 having a support plate portion 19b integrally provided upright so as to wrap it in a U-shaped cross section. A support hole 5a is formed at the upper end of the support bracket 6 so as to pass through the support plate portion 19b and the support plate 18b to support the pivot pin 5 therethrough, and the cross member 3 of the cross member 3 is provided at the upper rear edge of the support plate portion 19b. Pipe member 3
A cut portion 19c into which a is fitted is formed, and the pipe member 3
a is integrally fixed by welding. In addition, the bolt hole 20 of the bolt 7 for fixing the support bracket 6 is a portion corresponding to the rear end portion of the floor surface and the front end portion of the recess 12, and the support plate portion 1
9b and the support plate 18b or the support plate 18b alone is formed. By thus constructing the support bracket 6 by combining the two members 18 and 19, it is possible to improve the support rigidity with a lighter and cheaper configuration.

The cross member 3 and the support bracket 6
The specific configuration of is not limited to the above illustrated example, and may be arbitrarily designed according to the vehicle body structure and specifications.

Further, in the above embodiment, an example in which the intermediate portion of the cross member 3 is fixedly connected to the support bracket 6 which supports the pivot pin 5 of the seat back 2b is shown, but the support bracket which supports the seat cushion 2a is shown. Etc. may be combined and fixed.

[0027]

According to the child seat attaching apparatus of the present invention, the cross member having the metal fittings for fixing the child seat as described above is supported on the floor through the support brackets not only at both ends but also in the middle. Therefore, even if a lightweight and inexpensive cross member is used, it does not significantly deform due to the load applied from the child seat at the time of a frontal collision, the supporting rigidity of the child seat can be secured, and the load loaded on the rear part can be secured. There is no risk of deformation even if the vehicle moves forward due to sudden braking or the like and collides.

When the cross member is fixed to the support bracket in a state of being brought into contact with the support bracket from the rear, the support bracket receives a forward load applied to the cross member from the child seat, so that high support strength can be obtained. It is also easy to process and assemble.

If the support bracket is a support bracket of a pivot pin that pivotally supports the seat back, the support bracket of the seat back has a structure in which it is received from the rear by the cross member, and therefore, the seat bracket is added to the seat back when the backrest is placed. The load is shared by the cross members, and seat rigidity is secured.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a child seat attachment device of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view showing a specific configuration example of the same embodiment.

FIG. 4 is a sectional view taken along the line BB of FIG.

5 is a view on arrow C of FIG. 3. FIG.

FIG. 6 is a perspective view of a rear floor structure of a conventional vehicle body.

FIG. 7 is a vertical sectional side view of the conventional example.

8A and 8B show an installed state of a child seat, FIG. 8A is an overall perspective view, and FIG. 8B is a partial detailed perspective view of a portion D of FIG. 8A.

[Explanation of symbols]

1 Rear floor panel 2 rear seats 2a seat cushion 2b seat back 3 cross members 5 pivot pins 6 Support bracket 8 fixing brackets

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 10-129534 (JP, A) Japanese Patent Laid-Open No. 11-255155 (JP, A) Actual Flat 5-37661 (JP, U) Actual Flat 4- 62289 (JP, U) International Publication 00/51471 (WO, A1) US Patent 5918934 (US, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60N 2/00 -2/54 B62D 25 / 20

Claims (3)

(57) [Claims] 1. A cross member extending in the vehicle width direction is provided above a floor panel to fix both ends of the cross member to both side portions of the vehicle body, and an intermediate portion thereof supports a seat cushion or a seat back fixed to the floor panel. A child seat attachment device, which is fixed to a support bracket and has a fixing member attached to the cross member for fixing a child seat placed on a seat arranged in front of the support member. 2. The cross member is fixed to the support bracket while being brought into contact with the support bracket from the rear.
Child seat mounting device described. 3. The support bracket is a support bracket for a pivot pin of a seat back.
Child seat mounting device described.