JP2907502B2 - How to assemble the front body of the vehicle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for assembling a front vehicle body of an automobile.

2. Description of the Related Art Conventionally, in a vehicle assembly line (main line), mounting parts such as a bumper, a radiator grill, a headlamp, a radiator, and the like at a front portion of a vehicle body are individually assembled to a vehicle body at individual stations. As a result, the number of stations has been increased, and as a result, the length of the assembly line has become longer and more complicated. Further, in a mixed flow line for assembling a plurality of types of automobiles, an operator must determine whether or not to install the above-mentioned components in accordance with the type of the vehicle, which is particularly problematic in terms of workability.

Therefore, it is conceivable to unitize some of the mounting components to facilitate the work on the assembly line and reduce the number of stations. If you do this,
Since the entire unit is separately assembled, it is advantageous in terms of improving the mounting accuracy of each mounting component in the unit.

Therefore, from such a viewpoint, for example, JP-A-63-1037
As disclosed in Japanese Patent Publication No. 71, various components such as a radiator, a headlamp, a bumper, and a radiator grill are assembled into a radiator core support to form a unit, and this unit is assembled to a front portion of a vehicle body. Has been proposed.

(Problems to be Solved by the Invention) However, in the above-described structure, since a heavy member such as a radiator is supported, high supporting rigidity is required. Therefore, the fastening is directly performed to the front side frame. Required. In such a case, the front side frame may be located in the vicinity of the side portion of the radiator core support in recent years in which the front end of the vehicle body is slanted so as to be inclined downward. However, since the bumper is originally mounted on the front side frame with the bumper mounting bracket, the side part of the radiator core support is supported on the front side frame while supporting the bumper with the bumper mounting bracket It is difficult to increase the coupling strength of the side portion of the radiator core support to the front side frame.

In addition, in the above-described method, two steps of a step of mounting the bumper on the front side frame by the bumper mounting bracket and a step of supporting the side portion of the radiator core support on the front side frame are required.
Separate fasteners (for example, bolts, nuts, etc.) are required in each step, which increases the number of parts, and the mounting man-hours for the two steps result in poor mounting efficiency.

The present invention has been made in view of such a point, and the step of firmly coupling the side portion of the radiator core support to the front side frame while supporting the bumper with the bumper mounting bracket does not increase the number of parts. It is an object of the present invention to provide a method of assembling a front body of a vehicle which can be easily performed in one step.

(Means for Solving the Problems) In order to achieve the above object, a solution of the invention according to claim 1 includes a front side frame having a closed cross-sectional structure in which a bracket is provided at a front end, the front side frame having a front end opened and the front side frame being provided. As a method of assembling a bumper, a bumper mounting bracket and a nose unit having a shroud member to a front portion of a vehicle body having left and right reinforcements disposed on the upper side of a frame, the shroud member is moved in the vehicle lateral direction. A shroud door provided with extending portions extending rearward on both left and right sides, a shroud drawer disposed below the shroud door, and a pair of left and right connecting the shroud drawer and the shroud drawer. The vertical member is joined to the front end of the shroud door so as to hang down therefrom and And a pair of left and right panel members forming side portions of the shroud member, and the nose unit is a first unit member including a bumper and a bumper mounting bracket, and a second unit including the shroud member. A fixing member that is prepared by being divided into a unit member and provided to protrude rearward from the bumper mounting bracket of the first unit member,
After the first unit member and the second unit member are temporarily fixed to form a nose unit by being inserted into a mounting hole formed in a panel member of the shroud member of the second unit member, the nose is temporarily fixed. The unit is inserted into the vehicle body from the front, and the shroud member is attached with the extended portion of the shroud door inserted into the tip of the reinforcement, and the fixing member is fixed to the bracket of the front side frame. Thus, the nose unit is attached to the front part of the vehicle body by fastening the bumper mounting bracket together with the side part of the shroud member to the bracket of the front side frame.

According to the present invention, when the bumper mounting bracket of the first unit member is assembled to the side portion of the shroud member of the second unit member to form a nose unit, the bumper mounting bracket is attached to the shroud member. The nose unit is fastened to the front side frame bracket together with the side parts, and the nose unit is assembled to the front part of the vehicle body. Thereby, the side portion of the shroud member of the second unit member is connected to the bracket of the front side frame and the first side frame.
The unit member is firmly connected to the bumper mounting bracket while being sandwiched between the unit member and the bumper mounting bracket.

Further, as described above, the work process of supporting the side portion of the radiator core support while supporting the bumper with the bumper mounting bracket on the front side frame is performed when the bumper mounting bracket is assembled to the side portion of the shroud member to form a nose unit. Can be performed in one step by joint fastening using one fastener, the number of parts can be reduced by using a common fastener, and the assembling efficiency can be improved by reducing the number of assembly steps in one step. Can be something.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1 showing the front of a car, 1 is a car,
A nose unit 3 is attached to a front portion of the vehicle body 2. Front fenders 4, 4 are provided outside both sides of the vehicle body 2, and a hood 5 is provided above the front part.

As shown in detail in FIG. 2, the vehicle body 2 includes wheel aprons 12 and 12 forming left and right side walls of an engine room 11.
The front side frames 13 and 13 are joined to the lower side, and the wheel apron 12 and 12 are joined to the wheel apron reinforcements 14 and 14 on the upper side, forming a closed cross-sectional structure that extends in the vehicle longitudinal direction. Have been. In addition, a cross-section member having a closed cross-section extending in the left-right direction of the vehicle body is provided on the lower surface side of the front end portion of the front side frames 13, 13.
The lower surface of the front end of each front side frame 13 and the upper surface of the left and right end of the cross member 15 are connected by a connection bracket 16 having a substantially box shape. further,
At the front end of each of the front side frames 13, an inner bracket 17 and an outer bracket 18 for supporting a bumper 21 described later are provided.

As shown in FIGS. 3 to 5, the nose unit 3 has a bumper 21, a bumper reinforcement 22, and a bumper mounting bracket 72 (described later).
The unit member 3A, the shroud member 24 serving as a unit base, and other components (the bonnet lock means 3 described later)
7, radiator grille 51 and left and right lamp units 52L,
52R) and a second unit member 3B having the same.

The shroud member 24 includes a shroud upper 32, vertical members 33, 33, and a shroud drawer. The shroud upper 32 includes a vertical wall portion 32a extending vertically and an upper wall portion 32 extending rearward from an upper edge of the vertical wall portion 32a.
b, and a rear wall portion 32c extending below the rear edge of the upper wall portion 32b, and a pair of vertical members 33, 33 hang down from the center of the upper wall portion 32b in the left-right direction of the vehicle body. Each of the above vertical members 33
On the upper side of the front end face of the
Of a pair of panel materials 35,3 hanging down from the center of the vehicle body in the left-right direction
5, each panel member 35 and each vertical member 33
These form side portions 36, 36 of the shroud member 24. A pair of left and right bonnet lock means 37, 37 are provided at the upper end of the panel member 35 of each of the side portions 36, and the support members 38 of the respective bonnet lock means 37 are inserted into the mounting holes at the upper end of the panel member 35. Bolts 39,… and nuts 40,…
It is attached by.

At both lower ends of the vertical members 33, a shroud drawer 34 that supports a condenser 41A and a radiator 41B, which are weight members 41, is provided. The shroud drawer 34 is
As shown in FIG. 5, it has a substantially L-shaped cross section.
The lower ends of the condenser 41A and the radiator 41B are attached to the mounting holes on the side of the shroud drawer 34 by rubber mounting members 42a,
Supported via 42b. Also, the above capacitor 41A
The upper end side of each of the side portions 3 via rubber mount members 43a, 43a protruding forward provided on both side ends thereof.
The panel member 35 of No. 6 is supported by a mounting hole at the upper end. On the other hand, the upper end of the radiator 41B is
The radiator brackets 44 are substantially T-shaped and inserted into the mounting holes of the upper wall 32b from above.

A radiator grille 51 and left and right lamp units 52R, 52L are attached to the shroud member 24. That is, the radiator grille 51 has a central position of each mounting hole at the upper end of the panel member 35 for mounting the support member 38 of each bonnet lock means 37 with the bolt 39 and the nut 40.
Mounting portions 51a,... Are fitted and fixed to the respective substantially rectangular mounting holes at the center of the upper wall portion 32b of the shroud upper 32. Also, the left and right lamp units 52R, 52L are
The mounting portions 52a are fastened to the mounting holes at the side end position of the upper end portion of the panel member 35 and the side end position of the vertical wall portion 32a of the shroud upper 32 by bolts 53, respectively.

Further, other components provided in the second unit member 3B include a harness 61 for connecting an electric system and an airbag device (not shown) for ensuring occupant safety when an impact load of a predetermined value or more is applied. ) Include an airbag sensor 62 that issues a command signal, horn devices 63 and 63 that emit a horn, and buffer members 64 and 64 when the hood 5 is closed.
The harness 61 is fitted and fixed in a mounting hole of the upper wall portion 32b of the shroud door 32 via clip-type mounting members 61a, 61a. The airbag sensor 62 is connected to the harness 61 via a terminal, and is connected to the rear wall 32 of the shroud upper 32.
It is fastened by a bolt 65 to a mounting hole (not shown) of c.
Further, the horn devices 63, 63 are fastened to the mounting holes at the center of the vertical wall 32a of the shroud upper 32 by bolts 66,
The buffer members 64, 64 are fitted and fixed in mounting holes on the upper wall 32b side end of the shroud upper 32.

The bumper reinforcement 22 having a closed cross-sectional shape to which the bumper 21 is adhered includes a front member 71 having a substantially hat-shaped cross section located on the front side, and a flat bumper mounting bracket serving as a rear member located on the rear side. And three first bolts 73 projecting rearward from the left and right sides of the bumper mounting bracket 72, respectively. Of the three first bolts 73 on the left and right sides of the bumper mounting bracket 72, one of the first bolts 73 located outside is a panel member 35 of the shroud member 24.
The nut 74 is inserted through the mounting hole on the outside of the lower end of the (side part 36).
Has been concluded. On the other hand, the three first bolts 7
The remaining two first bolts 73,7 located inside of 3, ...
3 is inserted through the mounting hole of the inner bracket 17 of the front side frame 13 in a state where the nut 7 is inserted through the mounting hole inside the lower end of the panel member 35 of the shroud member 24.
It is concluded by joint tightening by 5,75. Also, two upper and lower second bolts 76, 76 are provided on the left and right ends of the bumper mounting bracket 72 located outside the first bolts 73, respectively.
Each of the second bolts 76 is inserted into a mounting hole of the outer bracket 18 of the front side frame 13 and fastened by a nut (not shown).

The rear end of the shroud drawer 34 of the shroud member 24 is fastened to a mounting hole on the front surface of the cross member 15 by a bolt 81 and a nut 82. Also, bumper 21
Are also connected and fixed to a mounting portion 4a of the front fender 4 of the vehicle body 2 via a bolt (not shown) applied through a mounting hole of the bumper 21. Further, extending portions 32R and 32L extending rearward are provided at the left and right ends of the upper wall portion 32b of the shroud upper 32, and the extending portions 32R and 32L are inserted into the wheel apron reinforcement 14. In this state, it is bolted to the mounting portion 4a on the upper part of the front fender 4 and the wheel apron reinforcement 14.

With the above configuration, first, the shroud upper 3
2.Side parts 36,36 (vertical members 33,33 and panel materials 35,3
5) The hood lock means 37, the weight member 41 (condenser 41A, radiator 41B), the radiator grille 51, the lamp units 52R and 52L, etc. are assembled to the shroud member 24 constituted by the shroud drawer 34, A two-unit member 3B is configured. Apart from the second unit member 3B, the first unit member 3A is constituted by the bumper 21, the bumper reinforcement 22 (the front member 71 and the bumper mounting bracket 72).

The first unit member 3A thus prepared is inserted into the second unit member 3B from the front side, and one first bolt 73 protruding from the bumper mounting bracket 72 of the bumper reinforcement 22 is attached to each of the shroud members 24. The first unit member 3A and the second unit member 3B are temporarily fixed to the mounting holes on the outer side of the lower end of the panel member 35 with the nuts 74, and temporarily fixed to form a nose unit. In this case, the two inner first bolts 73 projecting from the bumper mounting bracket 72 of the bumper reinforcement 22 are connected to the shroud member 2.
4 is inserted into the mounting hole inside the lower end of each panel member 35.

Thereafter, the first unit member 3A and the second unit member 3B
The nose unit 3, which is a nose unit, is inserted into the vehicle body 2 from the front, and the two inner first bolts 73 are inserted through the mounting holes of the inner bracket 17 of the front side frame 13. The nose unit 3 is fastened and fixed to the front part of the vehicle body by co-fastening with the nuts 75,75.

Thereby, the shroud member 24 of the second unit member 3B is
The side portion 36 (panel member 35) of the first unit member 3A is firmly connected with the inner bracket 17 of the front side frame 13 and the bumper mounting bracket 72 of the first unit member 3A. The strength of the connection of the portion 36 to the front side frame 13 can be improved.

Also, the bumper mounting bracket 72 of the bumper 21 is attached to the inner bracket 17 of the front side frame 13 as described above.
Each of the first bolts as one fastener when the bumper mounting bracket 72 is assembled to the side portion 36 of the shroud member 24 to form a nose unit in the work process of supporting the side portion 36 of the shroud member 24 while supporting the Can be performed in one step by co-fastening using a common first bolt 73
, The number of parts can be reduced, and the assembling efficiency can be improved by reducing the number of assembling steps as one process.

(Effects of the Invention) As described above, according to the method of assembling the front vehicle body of the vehicle according to the present invention, the nose unit is divided into the bumper, the bumper mounting bracket, and the shroud member. When the bumper mounting bracket is assembled to the side part of the shroud member to form a nose unit, the front side frame is sandwiched between the front side frame brackets using a single fastener. This can be performed in one step, and the coupling strength of the side portion of the shroud member to the front side frame can be improved. In addition, the number of components using a common fastener can be reduced, and the efficiency of assembly can be improved by reducing the number of assembly steps required in one process.

[Brief description of the drawings]

1 is a perspective view of a front portion of a vehicle, FIG. 2 is a perspective view of a vehicle body front portion, FIG. 3 is a perspective view of a nose unit, and FIG. 4 is a nose. FIG. 5 is an exploded perspective view of the unit, and FIG. 5 is a sectional view showing a final mounted state. 2 ... body 3 ... nose unit 3A ... first unit member 3B ... second unit member 13 ... front side frame 14 ... wheel apron reinforcement 17 ... inner bracket (bracket) 21 ... bumper 24 … Shroud member 32… Shroud upper 32R… Extension part 32L… Extension part 33… Vertical member 34… Shroud drawer 35… Panel material 36… Side part 72… Bumper mounting bracket 73… 1st bolt (fixing member)

Claims (1)

(57) [Claims] 1. A front portion of a vehicle body having both a left and right front side frame having a closed cross-sectional structure having a bracket provided at a front end thereof and a reinforcement having an open front end and disposed above the front side frame. A method of assembling a nose unit having a bumper, a bumper mounting bracket, and a shroud member, wherein the shroud member is provided with an extending portion extending in a vehicle left-right direction and extending rearward on both left and right sides. A shroud drawer disposed below the shroud upper, a pair of left and right vertical members connecting the shroud upper and the shroud drawers, and a lower end joined to the front end of the shroud upper and It is formed by a pair of left and right panel materials that constitute the side part of the shroud member together with the vertical member. The nose unit is divided into a first unit member composed of a bumper and a bumper mounting bracket, and a second unit member having the shroud member. The nose unit is provided in the bumper mounting bracket of the first unit member. A state in which the first unit member and the second unit member are temporarily fixed by inserting a fixing member provided so as to protrude rearward into a mounting hole formed in a panel member of the shroud member of the second unit member from the front. After the nose unit is formed, the temporarily fixed nose unit is inserted into the vehicle body from the front, and the shroud member is attached in a state where the extended portion of the shroud door is inserted into the tip of the reinforcement, and attached. By fixing the fixing member to the bracket on the front side frame, the bumper mounting bracket A method of assembling a front vehicle body of a vehicle, comprising: attaching a nose unit to a front portion of a vehicle body by fastening the nose unit together with a bracket of the front side frame together with a side portion of the loud member.