JP3716929B2 - Body structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle body structure.
[0002]
[Prior art]
FIG. 5 is a perspective view of a cab of a vehicle having a conventional structure. The vehicle cab 1 is composed of a front assembly 2, a rear assembly 3, a floor assembly 4, a roof side rail assembly 5, and a roof assembly 6. The front assembly 2 and the rear assembly 3 are floor assemblies 4. The front end of the roof side rail assembly 5 is welded to the upper end of the front pillar 7 of the front assembly 2 and the rear end is welded to the upper end of the rear pillar 8 of the rear assembly 4, respectively. A roof assembly 6 is welded to a front assembly 2, a rear assembly 3, and a roof side rail assembly 5. Further, on both sides of the cab 1, door openings 9 including a front pillar portion 7, a roof side rail assembly (hereinafter referred to as “roof side rail portion”) 5, a rear pillar portion 8, and a floor assembly 4 are formed. .
[0003]
There are two types of roofs for the cab 1, low roof and high roof. The structure of the components of the front assembly 2 differs depending on the type of roof height. FIG. 6 is an exploded perspective view collectively showing the structure of the coupling portion between the low roof of the cab 1 shown in FIG. 5, the two types of front pillar portions of the high roof, and the roof side rail.
The front pillar portion 7 constituting the low roof front assembly 2 includes a front pillar outer upper 11, a front pillar outer lower 12, a front pillar inner 13, and a front pillar inner connector 14. The front pillar outer upper 11 and the front pillar outer lower 12 form a front pillar outer. The front pillar outer upper 11 has an upper portion 11a extending rearward, and a front end 15a of the roof side rail outer 15 of the roof side rail portion 5 is joined to the rear end portion 11b by brazing. The front pillar inner connector 14 has a lower end portion 14 a welded to the upper end portion 13 a of the front pillar inner 13, and a rear end portion 14 b welded to the front end portion 16 a of the roof side rail inner 16 of the roof side rail portion 5.
[0004]
Further, the front pillar portion 7 ′ (FIG. 5) constituting the high roof front assembly 2 ′ includes a front pillar outer upper 11 ′, a front pillar outer lower 12, a front pillar inner 13, and a front pillar inner connector 14 ′. It consists of. A front pillar outer is formed by the front pillar outer upper 11 ′ and the front pillar outer lower 12. The front pillar outer upper 11 ′ has an upper portion 11′a extending rearward, and a front end 15′a of the roof side rail outer 15 ′ of the roof side rail portion 5 ′ is joined to the rear end portion 11′b by brazing. The front pillar inner connector 14 ′ has a lower end portion 14′a welded to the upper end portion 13a of the front pillar inner 13 and a rear end portion 14′b that is the front end portion of the roof side rail inner portion 16 ′ of the roof side rail portion 5 ′. Welded to 16'a.
[0005]
As shown in FIGS. 5 and 6, the rear pillars 11 and 11 ′ and the rear end portions 11b and 11′b of the front pillar outer upper 11 and 11 ′ and the roof are provided in any type of the front pillar portion 7 of the low roof and the front pillar portion 7 ′ of the high roof. The joint portions (in other words, the divided portions of the front pillar portion and the roof side rail portion) 17 and 17 'with the front end portions 15a and 15'a of the side rail outer portions 15 and 15' are the roof side rail portions 5 and 5 '. It is located on the side part (roof side part).
[0006]
[Problems to be solved by the invention]
In the vehicle body structure having the above structure, the front pillar outer upper 11, 11 ′ and the roof side rail outer 15, 15 ′ are combined in any type of the low roof front pillar 7 and the high roof front pillar 7 ′. Since the parts 17 and 17 'are located on the roof side part, the number of parts is increased due to the different types of roof heights of the low roof and the high roof.
[0007]
That is, of the five component parts (front pillar outer upper, front pillar outer lower, front pillar inner, front pillar inner connector, and roof side rail outer), two parts (front pillar outer lower and front pillar inner) are: Although it has the same shape, the other three parts (front pillar outer upper, front pillar inner connector, roof side rail outer) have different shapes depending on the type. That is, the number of common component types is 4 (2 × (L / R) = 4), and the number of type component types is 12 (3 × (R / L) × 2 type = 12). Therefore, the number of molds for molding the component parts increases, and the mold cost becomes enormous.
[0008]
Also, the connecting portions 17 and 17 'of the rear end portions 11b and 11'b of the front pillar outer uppers 11 and 11' and the front end portions 15a and 15'a of the roof side rail outers 15 and 15 'have a large cross-sectional shape. Since it is located on the roof side, the amount of work for brazing the connecting part dividing line is large. That is, there is a problem in that the amount of work for joining and finishing work of the joining portions 17 and 17 'by brazing increases, and the work cost increases.
[0009]
For this reason, in the present invention, the connecting portion between the front pillar portion and the roof side rail portion is changed to the pillar portion, and the shape difference due to the difference in roof height is aggregated into the type generating component, and the type component due to the shape difference is reduced. An object of the present invention is to provide a vehicle body structure that shortens the connecting part dividing line and reduces the work amount of the outer plate brazing.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention, the upper end of the front pillar inner of the front pillar portion and the front end of the roof side rail inner of the roof side rail portion are coupled by a front pillar inner connector, A vehicle body structure in which a connecting portion between a front lower end of a roof side rail outer and an upper portion of a front pillar outer of the front pillar portion is extended to a position where a front corner of a door opening is formed, and the front pillar portion is a low roof vehicle. The roof side rail portion and the front pillar inner connector can be selected according to the low roof vehicle and the high roof vehicle, and the position of the connecting portion between the front pillar portion and the roof side rail is selected. Change to the front pillar, low roof and heil Aggregating the shape difference due to roof height difference between the full to the type generating component. Thereby, the classification components by shape difference reduce. Further, the length of the connecting parting line is shortened, and the amount of outer plate brazing work is reduced.
[0011]
The roof side rail portion and the front pillar inner connector have a length of a lower end portion of a roof side rail outer of the roof side rail portion of the high roof vehicle and a lower end portion of the front pillar inner connector of the low roof vehicle. It is set longer than the length of the lower end part of the roof side rail outer of the roof side rail part and the lower end part of the front pillar inner connector (Claim 2) .
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a cab to which a vehicle body structure according to the present invention is applied. FIG. 2 summarizes the structure of a coupling portion between two types of front pillar portions and a roof side rail of the low roof and high roof of the cab shown in FIG. FIG.
[0013]
As shown in FIG. 1, a cab 21 of a vehicle includes a front assembly 22, a rear assembly 23, a floor assembly 24, a roof side rail assembly 25, and a roof assembly 26, and door openings 29 are formed on both sides. Has been. And the position (pillar part) where the connection part 37 of the front pillar part 27 and the roof side rail assembly (hereinafter referred to as “roof side rail part”) 25 forms the front corner of the door opening 29 of the front pillar part 27. It is said that.
[0014]
As shown in FIG. 2, the front pillar outer 31 includes two parts, a front pillar outer upper 11 or 11 ′ and a front pillar outer lower 12 constituting the conventional front pillar portion 7 (7 ′) shown in FIGS. 5 and 6. Consists of a single part integrally molded from a single plate. A front pillar inner 33 is welded to the front pillar outer 31 to form a front pillar portion 27 having a closed sectional structure. The front pillar portion 27 composed of the two parts of the front pillar outer 31 and the front pillar inner 33 is a common part for the low roof specification and the high roof specification.
[0015]
As shown in FIGS. 2 to 4, the front pillar outer 31 is formed so that the front corner vicinity portion 31 c of the door opening of the upper portion 31 a faces upward and gradually forms a substantially semiconical shape toward the front pillar inner connector 34. It is inclined and flattened. As a result, the rigidity of the upper portion 31a of the front pillar outer 31 changes gradually, and the strength of the connecting portion with the low roof front pillar inner connector 34 or the high roof front pillar inner connector 34 'is ensured.
[0016]
The upper portion 31a of the front pillar outer 31 and the front corner vicinity portion 31c are the roof side rail portion 25 of the low roof or the high roof, the front portion 35a of the roof side rail outer 35 of the roof side rail portion 25 ′, or the roof side rail outer 35 ′. Of the front corner portion 31c is connected to the lower end 35b of the roof side rail outer 35 or the lower end 35'b of the roof side rail outer 35 '. Part 37. And as shown in FIG. 3, the flange 31e for welding with the front window part of the front pillar outer 31 is extended and formed to the welding position 31f with the said front window part in a high roof, and the upper part 31a is the roof side of a low roof. The height is set so as not to interfere with the rail outer 35.
[0017]
In the low roof specification, as shown in FIGS. 2 to 4, the lower end 34a of the front pillar inner connector 34 for low roof is welded to the upper end 33a of the front pillar inner 33, and the roof side rail inner 36 is connected to the rear end 34b. The front end portion 36a is welded and joined. The upper end 31a of the front pillar outer 31 is welded to the back surface of the front pillar inner connector 34 (FIG. 4). Thereby, the high rigidity of the coupling | bond part of the upper end part 31a of the front pillar outer 31 and the front pillar inner connector 34 is achieved. The roof side rail outer 35 includes a front portion 35a that includes an upper portion 31a of the front pillar outer 31, and a lower end 35b that is brazed to the lower end position 31d of the front corner vicinity portion 31c. The roof assembly 26 is welded to the upper end of the roof side rail outer 35.
[0018]
In the high roof specification, as shown in FIGS. 2 to 4, the lower end portion 34'a of the front pillar inner connector 34 'for high roof is welded and joined to the upper end portion 33a of the front pillar inner 33, and the high roof is connected to the rear end portion 34'b. The front end portion 36'a of the roof side rail inner 36 'for use is welded and joined. The upper end 31a of the front pillar outer 31 is welded to the back surface of the front pillar inner connector 34 (FIG. 4). The roof side rail outer 35 'for the high roof has a front portion 35'a that includes the upper portion 31a of the front pillar outer 31, and a lower end 35'b that is brazed to the lower end position 31d of the front corner vicinity portion 31c. The roof assembly 26 'is welded to the upper end of the roof side rail outer 35'.
[0019]
Rorufu As described above, in any of the specifications of the high roof, the roof side rail portion of a front pillar 27 and Rorufu 25, or pillar portion the position of the coupling portion 37 of the roof side rail portion 25 'for high roof ( By changing to the position where the front corner of the door opening 29 of the front pillar portion 27 is formed), the length of the dividing line of the coupling portion 37 is shortened, and the finishing of the roof side rail outer 35 'as the outer plate is brazed The amount of work is reduced, and the cost is reduced.
[0020]
Also, the front pillar outer 31 is integrally formed with a front pillar outer upper part (two parts of a low roof front pillar outer upper and a high roof front pillar outer upper) and a front pillar outer lower part (one part). By integrating and using the front pillar 27 as a common component for the low roof and the high roof, the number of types can be reduced (type number 3 → type number 1), and investment can be reduced synergistically.
[0021]
Furthermore, by changing the position of the coupling portion 37 by changing the position of the coupling portion between the front pillar outer 31 and the roof side rail outer 35, 35 'to the front pillar portion 27, the shape difference due to the difference in roof height can be achieved. The front pillar inner connectors 34 and 34 ′ and roof side rail portions 25 and 25 ′, which are types of components, are integrated into the roof side rail portions 25 and 25 ′, and the front window portion welding flange 31e of the front pillar outer 31 is connected to the front window portion in the high roof specification. By setting the height so as to extend to the welding position 31f and not to interfere with the roof side rail outer 35 of the low roof specification, it is possible to reduce types of parts due to different shapes.
[0022]
【The invention's effect】
According to the present invention, the front pillar portion is a common part for the low roof vehicle and the high roof vehicle, and the roof side rail portion and the front pillar inner connector can be selected according to the low roof vehicle and the high roof vehicle. The position of the joint between the roof side rail and the roof side rail can be changed to the front pillar, and the difference in shape due to the difference in roof height between the lower roof and the high roof can be integrated into the type generation part. Accordingly, the number of types can be greatly reduced, and the investment can be reduced. Further, the length of the connecting part dividing line can be shortened, and the amount of work in the outer plate brazing finishing work can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a cab to which a vehicle body structure according to the present invention is applied.
2 is an exploded perspective view showing a structure of a connecting portion between two types of front pillar portions of a low roof and a high roof of the cab shown in FIG. 1 and a roof side rail. FIG.
FIG. 3 is an explanatory diagram of a state in which the front pillar portion and the roof side rail shown in FIG. 2 are assembled.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view showing a cab of a vehicle having a conventional structure.
6 is an exploded perspective view showing a structure of a connecting portion between two types of front pillar portions of a low roof and a high roof of the cab shown in FIG. 5 and a roof side rail.
[Explanation of symbols]
21 Cab 22, 22 'Front assembly
23, 23 'Rear assembly
24, 24 'Floor Assembly
25, 25 'Roof side rail assembly (roof side rail)
26, 26 'Roof assembly
27 Front pillar 31 Front pillar outer 33 Front pillar inner 34, 34 'Front pillar inner connector 35, 35' Roof side rail outer 36, 36 Roof side rail inner

Claims (2)

The upper end (33a) of the front pillar inner (33) of the front pillar (27) and the front end (36a, 36'a) of the roof side rail inner (36, 36 ') of the roof side rail (25, 25'). ) And the front pillar inner connector (34, 34 '), and the front lower end (35b, 35'b) of the roof side rail outer (35, 35') of the roof side rail portion ( 25, 25 ' ) And the front pillar portion (27) and the upper portion (31a) of the front pillar outer (31) extending to a position where a front corner of the door opening (29) is formed.
The front pillar portion (27) is a common part for the low roof vehicle and the high roof vehicle,
The vehicle body structure characterized in that the roof side rail portion (25, 25 ') and the front pillar inner connector (34, 34') can be selected according to the low roof vehicle and the high roof vehicle. The roof side rail part (25, 25 ') and the front pillar inner connector (34, 34')
The length of the lower end portion (35'b) of the roof side rail outer (35 ') of the roof side rail portion (25') of the high roof vehicle and the lower end portion (34'a) of the front pillar inner connector (34 '). Is set to be longer than the length of the lower end portion (35b) of the roof side rail outer (35) of the roof side rail portion (25) of the low roof vehicle and the lower end portion (34a) of the front pillar inner connector (34). The vehicle body structure according to claim 1, wherein:

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