JP3457510B2 - Structure of the upper back of the car - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a structure of an upper back portion of an automobile.

[0002]

As is well known, the upper back portion of an automobile is a portion that connects the left and right quarter panels below the rear windshield of the vehicle body and separates the passenger compartment from the trunk room. Such an upper back portion is generally composed of an upper back panel member whose main portion extends in the vehicle width direction. However, if this upper back panel member is formed to have the same length as the width of the vehicle interior, it is possible to have the assembly robot hold the upper back panel member and insert it into the vehicle interior from the opening of the rear window during assembly and manufacturing of the vehicle. It becomes difficult to do. Therefore, conventionally, a method has been adopted in which side brackets protruding inward in the vehicle width direction are attached to the left and right quarter panel inners, respectively, and then both longitudinal end portions of the upper back panel member are assembled to these side brackets. Has been done. According to such means, the length of the upper back panel member can be made shorter than the width in the vehicle compartment, so that the upper back panel member can be easily assembled between the quarter panels by the robot work.

When manufacturing the upper back portion of an automobile having the above-mentioned structure, from the viewpoint of improving the strength of the vehicle body and reducing the weight of the vehicle body, the number of points of use such as thick reinforcements should be minimized. While suppressing the size increase of each member that constitutes the upper back part as much as possible,
It is required to increase the strength of each part of the upper back part. Particularly, in the structure in which the upper back panel member is supported by the side bracket, it is necessary to sufficiently increase the strength of the connecting portions thereof. In addition, the rear seat belt retractor may be attached to the upper back portion. In this case, it is necessary to efficiently secure the retractor attachment space and to sufficiently increase the strength of the retractor attachment portion. There is.

Conventionally, as a means for attaching the retractor of the rear seat belt to the upper back portion, for example, there is a means described in Japanese Utility Model Laid-Open No. 1-57949. This conventional means is a means for forming a recess in the side bracket that supports the upper back panel member, and housing the retractor of the rear seat belt in the recess.
According to this conventional means, the retractor can be mounted in a space-efficient manner without protruding to the rear seat side, and further, a part of the side bracket forming the recess is formed in a bent sectional shape. As a result, its rigidity is increased. However, the above-mentioned conventional means is merely a means in which a part of the side bracket is simply formed into a bent cross-sectional shape so as to form a recess for accommodating the retractor, and the side bracket and the upper back panel member are connected. In the structure of the part, the flat plate-shaped edge portion of the side bracket and the edge portion of the upper back panel member are simply overlapped and welded. Therefore, in the above-mentioned conventional means, it cannot be said that the strength of the connecting portion between the side bracket and the upper back panel member and the peripheral portion thereof is efficiently and sufficiently enhanced, and there is room for improvement in this respect. was there.

The present invention has been devised under such circumstances, and the strength of the upper back portion is improved while suppressing the increase in size and weight of each portion of the upper back portion of the automobile. It is an object to efficiently increase the height and to make it convenient to attach a retractor for the rear seat belt.

[0006]

DISCLOSURE OF THE INVENTION In order to solve the above problems, the present invention takes the following technical means.

The present invention comprises a side bracket attached to the quarter panel inner so as to project inward in the vehicle width direction from the quarter panel inner, and an upper back panel member extending in the vehicle width direction. A longitudinal end portion of the back panel member is a structure of an upper back portion of an automobile supported by the side bracket, and the side bracket can accommodate a retractor of a rear seat belt in a front surface portion of the side bracket. A first bracket piece portion having a bent cross-sectional shape that forms a concave portion, and a second bracket piece portion that is located below the first bracket piece portion.
And the upper back panel member is formed by stacking and joining the upper back panel main body and the reinforcing panel in the vertical thickness direction thereof, and the upper back panel member. The upper back panel body of the panel member and the reinforcing panel are overlapped and joined to the first bracket piece portion and the second bracket piece portion, respectively, and these joined portions have a closed cross-section structure. Is characterized by.

According to the present invention, the upper back panel body and the reinforcing panel, which constitute the upper back panel member, are provided with the first bracket piece portion of the side bracket and the second bracket piece portion.
By overlapping and joining with the bracket piece portion, the structure of the joint portion between the upper back panel member and the side bracket has a closed cross-section structure. Therefore, in the present invention, the strength of the joint portion between the upper back panel member and the side bracket, which have a closed cross-section structure, can be efficiently enhanced by the characteristics of the closed cross-section structure. The strength of the longitudinal end portion of the back panel member and the side bracket itself is also increased. As a result, in the present invention, the necessity of increasing the size of the side bracket itself or the upper back panel member itself, or additionally providing a large number of reinforcements is suppressed as much as possible, and an increase in the weight of these parts is prevented. At the same time, there is an effect that the strength of the upper back portion can be efficiently and reasonably increased.

Further, according to the present invention, the retractor of the rear seat belt can be housed in the recess formed by the first bracket piece of the side bracket, and the retractor can be mounted on the side bracket in a space-efficient manner. Although an advantage can be obtained, the side bracket to which the retractor is attached is a portion whose rigidity is increased by joining with the upper back panel member, as described above. Therefore, it is optimal for mounting a retractor that requires a large supporting strength. Of course, since the first bracket piece that forms the recess for accommodating the retractor has a bent cross-sectional shape, the characteristic of this bent cross-sectional shape also has the effect of further increasing the rigidity of the side bracket.

In a preferred embodiment of the present invention, a lower end portion of a roof side panel inner provided above the quarter panel inner extends below an upper edge of the quarter panel inner, and the roof is provided. The lower end of the side panel inner and the portion of the quarter panel inner where the side bracket is provided may be overlapped and joined to each other.

According to this structure, the portion of the quarter panel inner where the side bracket is provided is reinforced by the lower end of the roof side panel inner, so that the supporting strength of the side bracket can be efficiently increased. it can. Further, the work of partially overlapping the lower end portion of the roof side panel inner with the quarter panel inner and joining them can be easily performed in a normal work process performed when assembling the vehicle body, and its workability is also good. Becomes That is, as a means to reinforce the portion where the side bracket is provided, it is possible to use a means such as making a reinforcement for it and then welding this reinforcement to the quarter panel inner. Although the workability is extremely poor, the above configuration does not cause such a problem.

In another preferred embodiment of the present invention,
A bracket having a lock striker for fixedly holding the seat back of the rear seat may be attached to the side bracket.

According to this structure, the bracket provided with the lock striker can be mounted in a space-efficient manner by using the side bracket which constitutes the upper back portion. Further, as described above, since the side bracket is a portion whose rigidity is increased by joining with the upper back panel member, if a bracket provided with a lock striker is attached to this portion, the mounting strength is also improved. It will be preferable.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a perspective view of an essential part showing an example of the structure of an upper back portion of an automobile according to the present invention. Figure 2
FIG. 2 is a sectional view taken along line II-II of FIG. 1. FIG. 3 is an exploded perspective view of essential parts of the structure of the upper back portion of the automobile shown in FIG. Figure 4
FIG. 4 is a perspective view of an essential part of a state where a side bracket supports an upper back panel member in the configuration shown in FIG. 3. FIG. 5 is a sectional view taken along line VV of FIG. FIG. 6 is an exploded side view of essential parts showing an example of each of the quarter panel inner and the roof side panel inner. In these figures, arrow Fr indicates the front of the vehicle, arrow Up indicates the upper side in the vehicle height direction, and arrow In indicates the inner side in the vehicle width direction.

In FIG. 1, an upper back portion A of a vehicle according to the present embodiment is provided with a side bracket 1 on a side surface portion 70 of the quarter panel inner 7 that faces inward in the vehicle width direction. The structure is such that the end portion in the longitudinal direction of the member 2 is supported. A retractor 5 for a rear seat belt is attached to the side bracket 1 and a lock striker 40 for fixing and holding a seat back 6 of a rear seat.
The bracket 4 provided with is attached. In the upper back portion A, the side bracket 1 is attached to each of two quarter panel inners provided on the left and right sides of the vehicle body, and both end portions of the upper back panel member 2 in the longitudinal direction are supported by the two side brackets 1. The structure is symmetrical and has a bilaterally symmetrical structure. However, for convenience of description, in the present embodiment, the configuration of only one longitudinal end portion side of the upper back portion A will be described.

As best seen in FIGS. 2 and 3,
The side bracket 1 includes a first bracket 11 and a second bracket 12 which are formed separately from each other. These two brackets 11, 12
Are formed by pressing a metal plate having a constant thickness, and are attached to the side surface portion 70 of the quarter panel inner 7 so as to project inward in the vehicle width direction.

The first bracket 11 forms a first bracket piece 1A having a bent cross section.
Specifically, the first bracket piece portion 1A includes two horizontal plate portions 11a and 11b that have a height difference and are displaced in the vehicle front-rear direction, and a standing plate that connects these horizontal plate portions 11a and 11b. This is a portion including the portion 11c. The first bracket 11 has the horizontal plate portion 11a.
And flange portions 19a, 19 provided on the upright plate portion 11c
b is brought into contact with the side surface portion 70 of the quarter panel inner 7,
By welding W1 and W2 to these flanges 19a and 19b, they are fixedly attached to the quarter panel inner 7. A recess 14 is formed above the horizontal plate 11a and in the front portion of the standing plate 11c. The retractor 5 for the rear seat belt is accommodated in the recess 14. After the mounting plate portion 50 of the retractor 5 is placed on the horizontal plate portion 11b,
It is fixedly attached to the horizontal plate portion 11b by a bolt 91 that is inserted into a bolt insertion hole 90 formed in the horizontal plate portion 11b.

In this embodiment, the reinforcement 9 is provided below the first bracket 11. The reinforcement 9 is a bent member fixedly attached to the side surface portion 70 of the quarter panel inner 7 by welding W3 at its lower end portion, and its upper end portion 9a has the above-mentioned first portion. It is in contact with the lower surface of the horizontal plate portion 11b of the bracket 11. The retractor 5
The bolt 91 for mounting the is fixed by being tightened so as to penetrate through the reinforcement 9 as well. When attaching the rear seat retractor 5 to the vehicle body, it is necessary to make the attachment strength sufficiently large, and the reinforcement 9 is to meet such a request.

The second bracket 12 is formed in a bent cross-sectional shape substantially similar to that of the first bracket 11, and has two horizontal plate portions 12a having a height difference and displaced in the vehicle front-rear direction. 12b and these horizontal plate portions 12
It has the standing plate part 12c which connects a and 12b. The horizontal plate portion 12b of the second bracket 12 is a portion corresponding to the second bracket piece portion 1B in the present invention.
The second bracket 12 includes the horizontal plate portions 12a, 1
The flange portions 19c and 19d provided on the 2b are the side surface portion 70 of the quarter panel inner 7 and the reinforcement 9
The flange portions 19c and 19d are fixedly attached to the quarter panel inner 7 by being abutted against the outer surface thereof and welding W4 and W5 to the flange portions 19c and 19d. The second bracket 12 is arranged below the first bracket 11, and a constant gap is provided between the horizontal plate portion 12b and the horizontal plate portion 11b of the first bracket 11. Has been. On the other hand, the horizontal plate portion 12a of the second bracket 12 and the horizontal plate portion 11a of the first bracket 11 described above.
And are in contact with each other and superimposed.

The bracket 4 provided with the lock striker 40 comprises the first bracket 11 and the second bracket 1 described above.
2 and the two horizontal plate portions 11a and 12a to the bolt 9
It is attached using 2,92. Above bracket 4
Is formed in a bent shape that hangs downward from the horizontal plate portions 11a and 12a. Rear seat back 6
A latch mechanism portion 60 that can be locked to the lock striker 40 is provided on the back surface of the.

3 and 4, the upper back panel member 2 has a shape extending in the vehicle width direction and comprises an upper back panel body 20 and a reinforcing panel 21. The upper back panel body 20 and the reinforcing panel 21 are both formed by pressing a metal plate having a constant thickness, and the upper back panel body 20 is a car stereo speaker, for example. It is configured to have a recess 24 for mounting in place. Although the reinforcing panel 21 has substantially the same length as the upper back panel body 20,
The width in the vehicle front-rear direction is the upper back panel body 2 described above.
The width is formed to be narrower than 0, and is overlapped and welded to the lower surface portion of the rear edge portion of the upper back panel body 20. The total cross-sectional structure in which the reinforcing panel 21 and the upper back panel main body 20 are joined is a closed cross-sectional structure having a closed cross-sectional shape in the transverse direction cross section of these panel members.

The longitudinal end portion of the upper back panel member 2 is supported by the side bracket 1 as described above, but specifically has the following configuration. That is, in the connection structure between the side bracket 1 and the upper back panel member 2, as shown in FIG. 5, the longitudinal end portion of the upper back panel body 20 is on the horizontal plate portion 11b of the first bracket 11. The parts are joined to each other by being placed on the plate and subjected to welding W6. On the other hand, the longitudinal end portions of the reinforcing panel 21 are joined to each other by overlapping the horizontal plate portion 12b of the second bracket 12 and performing welding W7 on the horizontal plate portion 12b. If working holes 99a and 99b are provided in advance in the horizontal plate portion 12b of the second bracket 12 and the longitudinal end portion of the upper back panel body 20, respectively, the welding tool K can be fitted into these holes 99a and 99b.
It is possible to appropriately perform the welding W6 and W7 by inserting through. The welded portions of the side bracket 1 and the upper back panel member 2 are such that the end portions of the upper back panel member 2 formed in a closed cross-section structure are respectively attached to the two horizontal plate portions 11b and 12b of the side bracket 1. Since they are welded structures, these welded parts also have a closed cross-section structure.

When the upper back panel member 2 is attached to the side bracket 1, the auxiliary panel 3 is attached to one side of the recess 14 of the first bracket 11 in advance, as shown in FIG. The auxiliary panel 3 is a panel for forming a side wall of the recess 14, and by providing the auxiliary panel 3, it is possible to prevent the side of the recess 14 from being unintentionally opened. Also,
In FIG. 4, the retractor 5 and the lock striker 40 are shown.
Although the brackets 4 provided with are omitted, they are attached to the side brackets 1 at predetermined positions before the upper back panel member 2 is assembled. In addition, in FIG. 3 and FIG.
The member indicated by 6 is a panel member that constitutes the upper peripheral portion of the luggage compartment.

In the structure of the upper back portion A of this embodiment, the roof side panel inner 8 is provided above the quarter panel inner 7, and the lower end portion 8a of the roof side panel inner 8 has the above-mentioned quarter side. The panel inner 7 is superposed and joined to the position where the side bracket 1 is provided. That is, as shown in FIG. 6, the lower end portion 8a of the roof side panel inner 8 arranged above the quarter panel inner 7
The constant region S is formed in a shape overlapping with the upper portion of the quarter panel inner 7. When a bead for increasing the strength is provided on the upper portion of the quarter panel inner 7, a bead having a shape matching the bead is also formed on the lower end of the roof side panel inner 8.
When the quarter panel inner 7 and the roof side panel inner 8 are joined to each other, the roof side panel inner 8 is connected to the upper edge 7 of the quarter panel inner 7.
It is arranged so as to extend below a and is welded so that the lower end portion 8a thereof overlaps the side of the portion where the side bracket 1 is attached.

According to the structure of the upper back portion A having the above-mentioned structure, since the joint portion between the upper back panel member 2 and the side bracket 1 has a closed cross-section structure, the strength of this portion is very large. Becomes Therefore, it is possible to form the first bracket 11 and the second bracket 12 that form the side bracket 1 with a relatively thin member, and it is possible to reduce their weight. Particularly, in the present embodiment, the roof side panel inner 8 is overlapped and joined to the portion of the quarter panel inner 7 to which the side bracket 1 is attached, so that the side bracket 1 is provided to the portion. It is possible to increase the rigidity of the and the supporting strength thereof. Therefore, the side bracket 1
As a means for increasing the strength of the joint between the side bracket 1 and the upper back panel member 2, it is not necessary or necessary to weld many reinforcements to the quarter panel inner 7 to reduce the weight of the vehicle body and the vehicle. Therefore, the assembling and manufacturing work can be facilitated.

Further, the retractor 5 for the rear seat belt
Can be efficiently housed in the concave portion 14 of the side bracket 1, and for example, in order to secure a mounting space for the retractor 5, it is necessary to reduce the size of the rear seat. You can Since the retractor 5 is attached to the side bracket 1 whose rigidity is increased by the joining effect with the upper back panel member 2, it is possible to sufficiently increase the support strength of the retractor 5. Furthermore, the bracket 4 with the lock striker 40 also
Since it is attached to the side bracket 1 having an increased rigidity, its supporting strength can also be made sufficient. Further, since the bracket 4 is attached to the upper surface of the horizontal plate portion 11a forming the recess 14 for accommodating the retractor 5, it is possible to attach the bracket 4 with good space efficiency. It is also possible to appropriately prevent the vehicle from becoming bulky in the passenger compartment.

The specific construction of each part of the structure of the upper back portion of the vehicle according to the present invention is not limited to the above embodiment, and various design changes are possible.

In the above embodiment, the side bracket is
Although the first bracket and the second bracket, which are formed separately from each other, are combined and configured, the present invention is not limited to this. In the invention of the present application, the upper back panel member may be supported by one bracket member configured by, for example, integrating the first bracket 11 and the second bracket 12 described in the above embodiment. I don't care.

Further, in the above embodiment, the longitudinal end portion of the upper back panel member has a closed cross-section structure in advance, so that when the upper back panel member is joined to the side bracket having the non-closed cross-section structure, those side brackets are not formed. Although the joining portion has a closed cross-section structure, the present invention is not limited to this. In the present invention, the side bracket is configured in advance to have a closed cross-section structure so that when the upper back panel member having the non-closed cross-section structure is joined to the side bracket, the joining portions have a closed cross-section structure. But it doesn't matter.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an example of a structure of an upper back portion of an automobile according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

3 is an exploded perspective view of a main part of a structure of an upper back portion of the automobile shown in FIG.

FIG. 4 is a perspective view of a main part in a state in which a side bracket supports an upper back panel member in the configuration shown in FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is an exploded side view of essential parts showing an example of each of a quarter panel inner and a roof side panel inner.

[Explanation of symbols]

A upper back section 1 side bracket 1A First bracket piece 1B Second bracket piece 2 Upper back panel member 4 bracket 5 retractors 6 seat back 7 Quarter panel inner 7a Upper edge 8 roof side panel inner 11 First bracket 12 Second bracket 14 recess 20 Upper back panel body 21 Reinforcing panel 40 rock striker

Front page continued (72) Inventor Yoshitaka Sawada 2-1-1 Taoyuan, Ikeda-shi, Osaka Daihatsu Kogyo Co., Ltd. (56) Reference JP-A-8-142915 (JP, A) JP-A-59-14548 (JP, A) Actual opening 4-41473 (JP, U) Actual opening 1-57949 (JP, U) Actual opening 63-119180 (JP, U) Actual opening 2-48491 (JP, U) Practical Registration of new model 2527344 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60R 22/24 B62D 25/00-25/04 B62D 25/20

Claims (3)

(57) [Claims] 1. A side bracket attached to the quarter panel inner so as to project inward in the vehicle width direction from the quarter panel inner, and an upper back panel member extending in the vehicle width direction, and the upper back panel. A longitudinal end portion of the member is a structure of an upper back portion of an automobile, which is supported by the side bracket, and the side bracket has a recessed portion capable of accommodating a retractor of a rear seat belt in a front surface portion of the side bracket. The upper back panel member includes a first bracket piece portion having a bent cross-sectional shape to be formed, and a second bracket piece portion located below the first bracket piece portion, and the upper back panel member is an upper back panel. The main body and the reinforcing panel are formed by overlapping and joining them in the vertical thickness direction thereof, and The upper back panel body and the reinforcing panel of the upper back panel member include the first bracket piece and the second bracket piece.
The structure of the upper back part of the automobile, characterized in that they are respectively superposed and joined to the bracket pieces of the above, and these joints have a closed cross-section structure. 2. A lower end portion of a roof side panel inner provided above the quarter panel inner extends below an upper end edge of the quarter panel inner, and a lower end portion of the roof side panel inner. The structure of the upper back portion of the automobile according to claim 1, wherein the portion of the quarter panel inner in which the side bracket is provided is overlapped and joined. 3. The structure of an upper back portion of an automobile according to claim 1, wherein a bracket having a lock striker for fixing and holding a seat back of a rear seat is attached to the side bracket.