JP2937458B2 - Vehicle front body structure and method of assembling the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a front vehicle body structure of an automobile in which a nose unit having at least a shroud panel and a shroud door is attached to a front part of a vehicle body, and a method of assembling the same. .

2. Description of the Related Art Conventionally, in an automobile assembly line (main line), mounting parts such as a bumper, a radiator grill, a headlamp, and a radiator at a front portion of a vehicle body are individually assembled to a vehicle body at individual stations. At present, the number of stations is increased, and as a result, the length of the assembly line is lengthened and 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 improving the mounting accuracy of each mounting component in the unit.

Therefore, from such a viewpoint, for example, JP-A-63-1037
As described in Japanese Patent Publication No. 71, it is proposed that various parts such as a radiator, a headlamp, a bumper, and a radiator grill are mounted on a radiator core support to form a unit, and the unit is mounted on a front portion of a vehicle body. Have been.

(Problems to be Solved by the Invention) However, in such a structure in which the unit is inserted into the vehicle body from the front side and attached thereto, the front fender is largely curved inwardly of the vehicle body and the front part of the vehicle body is tapered as in recent years. May not be applicable to other vehicles. That is, as shown in FIG. 26, when the unit is inserted, both ends b1 of the shroud upper b, which are fastening portions to the vehicle body (wheel apron reinforcement a) at both ends of the unit, are positioned inside the vehicle body. Front fender c
May interfere with the tip part c1 of the camera. In addition, 1 is an insertion line of the unit, and P is a mounting position of the unit.

The present invention has been made in view of the above, and an object of the present invention is to provide a front body structure of an automobile in which a nose unit can be assembled from the front side without interfering with a front unit, and an assembling method thereof. Things.

(Means for Solving the Problems) According to the invention of claim (1), the left and right fronts of the vehicle body that bend inward in the vehicle body ahead of the upper front part of the wheel apron in front of the upper front part of the wheel apron. It is assumed that a fender is attached and a nose unit having at least a shroud panel and a shroud door is attached to the front of the vehicle body from the front of the vehicle.

A shroud door attachment portion is provided which protrudes inward from an attachment portion of the front fender with respect to the vehicle body, while both ends of the shroud door of the nose unit are inserted through the inside of the front fender from the front. In this case, a fastening portion to be fastened and fixed to the shroud upper attachment portion is formed.

According to the invention of claim (2), the shroud door upper mounting portion is a mounting bracket, and the mounting bracket has a first fixing portion fastened and fixed to a front fender at a base end thereof;
A second fixing portion fastened and fixed to the front fender and the wheel apron.

Further, according to the invention of claim (3), the left and right front fenders are mounted on the body of the vehicle in front of the upper front part of the wheel apron and are curved more inward than the upper front part of the wheel apron. In a structure in which a nose unit having at least a shroud panel and a shroud door is attached to a front portion of the main body from the front of the vehicle body, an upper portion of an engine room side wall of the vehicle body and a front side of a mounting portion of a front fender to the vehicle body,
While a step portion which is lower than the mounting portion and serves as a mounting portion of the nose unit is formed, both ends of a shroud door of the nose unit are inserted into the front fender from the front of the step portion with respect to the front fender. A first fastening portion fastened and fixed to the step portion is formed.

In the invention of claim (4), both end portions of the shroud door of the nose unit have second fastening portions fastened and fixed to the front end portion of the front fender at a position forward of the step portion.

The invention according to claim (5) is characterized in that, in front of the upper front part of the wheel apron, the front front part of the vehicle body to which the left and right front fenders that curve the upper front part of the wheel apron more inwardly than the vehicle body are attached. It is premised on a method of mounting a nose unit having at least a shroud panel and a shroud door from the front of the vehicle body.

A step of providing a shroud door mounting portion projecting inward from the mounting portion of the front fender on the vehicle body to which the left and right front fenders are mounted; and The method includes a step of inserting both ends into the front fender by inserting the inside from the front from the front, and a step of fastening both ends of the shroud door upper of the nose unit to the shroud door mounting portion.

The invention according to claim (6) is characterized in that, in front of an upper front portion of a wheel apron, a front portion of a vehicle body to which left and right front fenders that are curved inward of the vehicle body more than an upper front portion of the wheel apron are attached. In a method of mounting at least a nose unit having a shroud panel and a shroud door from the front of a vehicle body, a shroud door mounting is provided on a vehicle body to which left and right front fenders are mounted at a position lower than the mounting portion on a front side of a mounting portion of the front fender. Providing the nose unit with respect to the vehicle body, inserting both ends of the shroud door of the nose unit into the front fender from the front of the shroud door mounting portion, and assembling the nose unit with the shroud door of the nose unit. Step of fastening both ends to the shroud upper mounting portion Configured to have a.

(Operation) According to the invention of claim (1), the shroud door upper mounting portion is positioned so as to be shifted inward from the mounting portion of the front fender with respect to the vehicle body, so that the nose unit is attached to the vehicle body. When inserting from the front, even if the front fender is curved inward of the vehicle body in front of the wheel apron, the fastening parts at both ends of the shroud door of the nose unit do not interfere with the front fender (curved part), It is inserted through the inside and positioned at the shroud door mounting portion of the vehicle body and fastened and fixed.

According to the invention of claim (2), the mounting bracket, which is the shroud door upper mounting portion, is previously fastened and fixed to the front fender at the first fixing portion, and then the mounting bracket is fastened to the wheel apron together with the front fender at the second fixing portion. By fixing, the mounting bracket is fastened and fixed together to the wheel apron when the front fender is assembled to the wheel apron without being fixed to the front fender, the wheel apron and the nose unit.

According to the invention of claim (3), the step portion serving as the mounting portion of the nose unit is formed on the vehicle body so as to be lower than the mounting portion of the front fender with respect to the vehicle body and forward of the mounting portion. As a result, the stepped portion is shifted forward with respect to the mounting portion of the front fender, and when the nose unit is inserted into the vehicle body from the front side, the first fastening of both ends of the shroud door upper of the nose unit is performed. The portion is inserted into the stepped portion of the vehicle body from the front without being interfered with the front fender (curved portion), and is positioned and fastened and fixed.

According to the invention of claim (4), the shroud upper is
Since the step portion of the vehicle body is fastened and fixed to the front end of the front fender at the front position by the second fastening portion, the present invention can also be applied to a case where the front end of the front fender is larger than the vehicle body.

According to the invention of claim (5), the shroud door mounting portion is provided to protrude inward from the mounting portion of the front fender with respect to the vehicle body, and the nose unit is attached to the vehicle body. When the nose unit is assembled from the front, the shroud door of the nose unit does not interfere with the front fender (curved section), and both ends of the shroud door of the nose unit are positioned and fixed to the shroud door mounting part of the vehicle body. Is done.

According to the invention of claim (6), the shroud door mounting portion is formed on the vehicle body so as to be lower than the mounting portion on the front side of the front fender mounting portion with respect to the vehicle body, and the shroud door mounting portion is provided. Because it is located to the front side with respect to the mounting part of the front fender,
Even when the shroud door of the nose unit is assembled to the vehicle body from the front side, both ends of the shroud door are positioned with respect to the shroud door mounting portion of the vehicle body without the nose unit interfering with the front fender (curved portion). Fastened and fixed.

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 and 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 a wheel apron which forms left and right side walls of an engine room 11.
Front side frames 13, 13 are joined to the lower side of 12, 12, and wheel apron reinforcements 14, 14 are joined to the upper side of the wheel aprons 12, 12, so that the closed cross section extends vertically in the longitudinal direction of the vehicle body. The structure is configured.

In the vicinity of the front end of the wheel apron reinforcement 14, a mounting bracket 15 protruding inward of the vehicle body is fixedly provided. As shown in FIG. 3, the mounting bracket 15 has a base portion 15a fixed to the wheel apron reinforcement 14, and extends inward of the vehicle body from the base portion 15a, and a fastening portion 22b of the shroud door 22 of the nose unit 3 has A mounting portion 15b to be fastened is provided, and two nuts 16, 16 are welded to a lower surface of the mounting portion 15b. In addition, another mounting bracket 1 is provided on the upper end of the front side frame 13, 13.
7,17 are fixed.

Also, mounting flanges 12a, 12b, 12c are formed at the front end of the wheel apron 12, and nuts 18 for fastening and fixing the shroud panel 21 with bolts 20, 20 are provided on the back side of the flanges 12a, 12b. Further, nuts 37 for fastening and fixing the shroud panel 21, the junction panel 31, and the junction panel are respectively welded to the rear surface side of the flange portion 12c by bolts.

Further, front end panels 19, 19 are provided at front end portions of the wheel aprons 12, 12, respectively.

The nose unit 3 is constructed as shown in FIGS. 4 and 5, and its unit base is provided at the upper end of the shroud panels 21, 21 with a shroud extending in the lateral direction of the vehicle body, as schematically shown in FIG. It is joined to the upper 22. The shroud upper 22 has a vertical wall portion extending vertically.
22A and an upper wall 22B extending rearward from an upper edge of the vertical wall 22A.
And the upper wall portion 22B is located at a distance of 1
A pair of vertical members 23, 23 are suspended.

At the lower ends of the vertical members 23, 23, an upper member 26A is provided.
A cross member 26 having a closed cross-sectional structure in which the lower member 26B and the lower member 26B are joined is provided. In addition, shroud panel 21
Has an opening 21a for a lamp unit 61A, 61B to be described later, as shown in FIG.
Notch 21b may be used instead of the opening.

On the cross member 26, support brackets 27, 27 for supporting the lower portions of the condenser 24A and the radiator 24B, which are the weight members 24, are provided on the rear side, and support brackets 28, 28 for supporting the intercooler 51 are provided on the front side. I have.

The condenser 24A and the radiator 24B are integrally connected by a member (not shown) .The lower ends thereof are supported by support brackets 27, 27 via rubber mount members, and the upper ends are mounting brackets 30, 30. The bolt is fastened to the mounting hole 22a of the upper wall portion 22B of the shroud upper 22 via a bolt 33. 6 and 7, reference numeral 29 denotes a towing hook, and a junction panel 31 is provided.
Is fixedly mounted on the lower surface.

A rear end portion of a rectangular tubular junction panel 31 is attached to the shroud panel 21. As shown in FIG. 8, the rear end flange portion 31a of the junction panel 31 is located on the rear side of the shroud panel 21, and is welded to the front side frame 13 (the rear surface of the bracket 17) via a flat junction plate 32. Nut 36)
The junction panel 31 and the front side frame 13 are fastened and fixed to the wheel apron 12 (nuts 37, 37 welded to the rear surface of the flange portion 12c) by bolts 34 so that the junction panel 31 and the front side frame 13 are on the same axis. I have.

Further, a bolt 43 erected from a bumper reinforcement 42 to which the bumper 41 is attached is fastened and fixed to a front end flange portion 31b of the junction panel 31.

Both ends of the bumper 41 are attached to the front fender 4 of the vehicle body 2 through bolts 45, 45 erected from the bumper 41 and bolts (not shown) applied through the bumper attachment holes 41a. It is also connected and fixed to the part 4a.

The fastening portions 22b, 22b at both ends of the upper wall portion 22B of the shroud door 22 are overlapped on the upper side of the mounting bracket 15 in the mounted state, and bolts (two bolts 46, (Only 46 is shown).

51 is an intercooler, the upper part of which is a mounting bracket 5
Bolt 5 to vertical wall 22A of shroud upper 22 through 2,52
3,53.

Reference numeral 54 denotes a radiator grill located at the center of the front part of the bicycle, left and right mounting portions 54a, 54a are provided in mounting holes in the vertical wall portion 22A of the shroud door 22, and a central mounting portion 54b is provided as a vertical member of the bonnet lock means 55. Each of the 56 mounting holes is fitted and fixed.

61A, 61B are left and right lamp units, and the mounting portions 61a, 61a at the upper end of each unit are attached to the vertical wall portion 22A of the shroud door 22 by bolts 62, 62, and the mounting portions 61b at the lower end are attached to the shroud panel 21 by bolts 63. The bolts 62 and 63 and the lower end mounting portion 61b are shown and fixed only for the lamp unit 61A. 64 and 65 are harnesses for maintaining the electric system, and the former 64 is a fixture 66, 66 and bolt 6
Is fastened to the support member 26 via 7,67, the latter 65
The shroud door 22 is fitted and fixed to the mounting hole of the upper wall portion 22B via the 68, 68. Reference numerals 71, 71 denote cushioning members when the hood 5 is closed, and are fitted and fixed to the upper wall portion 22B of the shroud upper 22.

According to the above configuration, when assembling the front vehicle body, the mounting portion 15b (shroud door mounting portion) of the mounting bracket 15 of the wheel apron reinforcement 14 is positioned inside the vehicle body with respect to the fastening portion of the front fender 4. When the nose unit 3 is inserted into the vehicle body from the front side and assembled, the nose unit 3 does not interfere with the front fender 4 of the vehicle body 2 and the wheel apron reinforcement 14 is mounted. bracket
The shroud door upper 2 of the nose unit 3 is attached to the mounting portion 15b of 15
The fastening portions 22b, which are both end portions, are overlapped and positioned.

Then, apply the two bolts 46, 46 from above,
The nose unit 3 (shroud upper 22) is fastened and fixed to the vehicle body 2 by screwing the nuts 16 and 16 of the mounting portion 15b of the mounting bracket 15 into screw.

In the above embodiment, the mounting bracket 15 is separate from the wheel apron reinforcement 14, but the mounting bracket can be formed integrally with the wheel apron reinforcement surface 14 and the wheel apron 12 It can also be made to be integrally molded.

In the above embodiment, the mounting bracket 15 is fixed to the wheel apron reinforcement 14, but as shown in FIGS.
A hollow mounting bracket 81 on the engine room side of
The front fender 4 is fixedly mounted inside and below the mounting portion 4b of the vehicle body 2 and the mounting bracket
Shroud upper with bolts 85, 85 on top 81a of 81
The fastening portion 82a of the 82 may be fastened and fixed. The mounting bracket 81 has a flange portion 81b around the periphery,
Although they are fixed by welding them to the front flange portion 12d and the inner side surface 12e of the wheel apron 12, they may be connected to the wheel apron reinforcement 83. A cross member 84 connects the left and right front side frames 13, 13.

Further, as shown in FIGS. 12 and 13, an attachment portion for attaching the shroud door of the nose unit may be provided below the attachment portion 4b of the front fender 4 to the vehicle body 2. That is, a step portion 91a as an attachment portion is provided above the front end portion of the wheel apron 91,
The horizontal fastening portion 9 of the shroud upper 92 is attached to the step portion 91a.
2a can be fastened and fixed by bolts 93. Also, in order to increase the fastening strength with the vehicle body 2,
Another vertical fastening portion 92b is provided at the end of the shroud upper 92.
And the fastening portion 92b is fastened and fixed to the inner surface of the wheel apron 91 by bolts 94.

Also in this case, assembling the front vehicle body is similar to the above-described case, since the step portion 91a (shroud door mounting portion) of the wheel apron 91 is located in front of the vehicle body with respect to the mounting portion 4b of the front fender 4. When the nose unit is inserted into the vehicle body 2 from the front side and assembled, the nose unit does not interfere with the front fender 4 of the vehicle body 2 and both ends of the shroud door 92 of the nose unit are attached to the stepped portion 91a of the wheel apron 91. The fastening portion 92a, which is a portion, is overlapped and positioned to be assembled.

Then, the bolt 93 is applied from above, and the step portion 91a
(A nut welded on the back side), and a bolt 94 is applied from the lateral direction to screw it on the inner side surface of the boil apron 91 (a nut welded on the back side), thereby forming a nose unit. Of the shroud door 92 is fixed to the vehicle body 2.

As shown in FIGS. 14 and 15, the fastening portion 96 of the shroud upper 95 is connected to the low portion 96a (first fastening portion) and the high portion 9.
By adopting a stepped shape having 6b (second fastening portion), the present invention can be applied to a case where the front fender 97 is desired to be extended forward more than the structure shown in FIG. In this case, the lower part 96a of the fastening part 96 is fastened and fixed to the step part 98a of the wheel apron 98, and the high part 96b of the fastening part 96 is fastened to the tip part 97a of the front fender 97 by bolts 99 and 100, respectively. The nuts 101 and 102 for fastening and fixing are fixed to the lower surface of the step portion 98a and the lower surface of the high portion 96b of the fastening portion 96. 103,1
Reference numeral 04 denotes bolts and nuts for fastening the front fender 97 to the wheel apron 98. 97b is bolt 9
Notch for fastening 9

In the above embodiment, the fastening portions 92a, 96 of the shroud uppers 92, 95 are directly fastened and fixed to the step portions 91a, 98a of the wheel aprons 91, 98. Of course, it is also possible to indirectly fasten and fix through the bracket.

Furthermore, as shown in FIGS. 16 to 18, when the fastening portion 110a of the shroud door 110 is provided on the vehicle body inner side with respect to the attachment portion of the vehicle body 2 of the front fender 4, the shroud door 110 is supported. The mounting bracket 111 may not be fixed to either the vehicle body 2 or the shroud upper 110.

That is, before the nose unit 3 is assembled to the vehicle body 2, the bolt 113 is applied in a state where the base end of the mounting bracket 111 is overlapped on the lower surface of the front fender 4, so that the mounting bracket is attached to the front fender 4. 111 is fastened and fixed to form a first fixing portion. Next, the front fender 4 to which the base end of the mounting bracket 111 is fastened and fixed is superimposed on the wheel apron 12 together with the mounting bracket 111, and a bolt 115 is attached to a nut 114 fixed to the back side of the wheel apron 12. By applying them, they are fastened and fixed, and the second fixing portion is configured. Thus, when the mounting bracket 111 fastens and fixes the front fender 4 to the wheel apron 12, it is assembled together with the wheel apron 12 (body body 2).

In this state, the nose unit 3 is inserted and positioned, and the fastening portion 22 b of the shroud upper 22 is fastened and fixed to the mounting bracket 111 by the bolt 116. When replacing the front fender 4, the bolts 113 and 115 can be loosened to remove the front fender 4.

Further, in the above embodiment, at least the support member for supporting the lower part of the weight member such as the radiator is constituted by one member extending in the left-right direction of the vehicle body, as shown in FIGS. 19 to 25. Alternatively, two support members 128, 128 separated in the lateral direction of the vehicle body may be used.

As shown in FIGS. 19 and 20, the nose unit 12
1 is the unit base on the nose unit assembly jig 122
The 123 is placed, and each part is assembled in that state.

The nose unit assembling jig 122 includes a base 122a extending in the left-right direction, vertical arms 122b and 122c extending above both ends of the base 122a, and an inwardly extending upper end of the vertical arms 122b and 122c. Arm portions 122d and 122e, and the base portion 122a
Three engagement pins 124A, 124B, 124C protrude upward so as to be able to protrude and retract, and the upper arm parts 122d, 122e have two engagement pins 124A, 124B, 124C.
D and 124E are provided to protrude downward so that they can appear and disappear. The engagement pins 124A to 124E are respectively protruded and retracted by cylinders (only the cylinders 181 and 181 for the engagement pins 124D and 124E are shown) as is well known.

On the other hand, the unit base 123 is basically composed of left and right shroud side panels 125, 125 (shroud panels).
And the shroud side panel 12
A shroud door upper 126 joined to the upper end of the shroud door 5, a center stay 127 hanging down from the center in the left-right direction of the shroud upper 126;
The first and second support members 128, 128 each having a substantially L-shaped cross section fixed to the lower end of the 5,125.

Thus, the shroud upper 126 has a vertical wall 126A extending vertically, an upper wall 126B extending rearward by an upper edge of the vertical wall 126A, and a rear wall extending downward by a rear edge of the upper wall 126B. A wall stay 126C (see FIG. 25) is provided, and a center stay 127 extending vertically in the vehicle body is suspended from a center portion of the vertical wall portion 126A in the vehicle body left-right direction.

Each support member 128 includes an upper wall portion 128a that supports a lower portion of a radiator 129 that is a weight member, a vertical wall portion 128b that extends downward by a front edge of the upper wall portion 128a and is joined to the shroud side panel 125, The support portion 1 that protrudes forward from the lower edge of the vertical wall portion 128b and supports the cooler condenser 130 that is a weight member.
28c.

Also, the shroud upper 126 of the unit base 123 is provided.
At the both ends of the (upper wall portion 126B), the lower end portion of the center stay 127 and the front portion of the support members 128, 128, the five engagement pins 124D, 124E, 124B, 124A, 124C of the jig 122 can be disengaged. An engaging portion having engaging holes 126a, 126b, 127a, 128d, 128d to be engaged is formed, and the engaging pins 124D, 124E, 124B, 124A, 124C and the engaging holes 126a, 126b, 127a, 128d, 128d are formed. The nose unit 121 is positioned by the engagement relationship of.

The lower ends of the radiator 129 and the cooler condenser 130 are supported by the support member 1 via rubber mounts 131A and 131B.
28,128 are supported by upper wall portions 128a, 128a (engagement holes 128e, 128e) and support portions 128c, 128c (engagement holes), and the upper ends of the radiator 129 and the cooler condenser 130 are provided with mounting brackets 132A, 132B. The shroud door 126 is reinforced with a radiator reinforcement 133 (see FIG. 23), and is fastened and fixed to the upper wall portion 126B (mounting hole) and the vertical wall portion 126A by bolts 134A and 134B, respectively.
In FIG. 23, reference numeral 157 denotes a nut which is screwed with a bolt 134A welded in advance to the lower surface of the upper wall portion 126B of the shroud upper 126 via a radiator reinforcement 133.

Also, mounting portions 125a, 125a are formed near the lower ends of the shroud side panels 125, 125, and the mounting portions 125a,
5a, two inner bolts 137A and 137A of a set of four bolts formed from a bumper reinforcement 136 to which a bumper face 135 is bonded are temporarily assembled for unitization using a nut 142. It is designed to be fastened and fixed. Also, the remaining two bolts 137B and 137 on the outside
B is the cross member 138 when the nose unit 121 is assembled.
The side portion 138a of the front frame 139 is fastened and fixed to the front flange portion 139a of the frame outer 139A so as to directly connect the bumper reinforcement 136 to the vehicle body 2 (see FIG. 24).

Further, both ends of the upper wall portion 126B of the shroud upper 126 are fixed to the shroud bracket 1 by bolts 140, 140.
Fastened and fixed to 41. In addition, shroud bracket
The 141 has a wheel apron reinforcement 14 and a front fender 4
And is fixed by a bolt 143 and a nut 144.

The support member 128 is supported on the cross member 138 in a state where the nose unit 121 is attached to the front portion of the vehicle body 2, and the nut 145, 146 and the bolts 147, 148 cause the upper wall portion of the support member 128 to be supported. Through the seven mounting holes of the front wall portion 128a and the front wall portion 128b, the cross member 138
The upper member 138A is fastened to the front wall portion and the upper wall portion (see FIG. 25).

151 is a cooler receiver, the side of which is a mounting bracket 1
When it goes up to the center stay 127 via 52, it is configured to be fastened by 153,153. The joint fitting 155 of the hose member 154 from the cooler receiver 151 is connected to the joint fitting 156 of the hose member 155 of the cooler condenser 130.

Reference numeral 161 denotes a bonnet locking means, and bolts 162, 162 are used to move the vertical wall 12 of the shroud upper 126 through a center stay 127.
It is fastened and fixed to 6A.

A power steering pipe 163 is fastened to the center stay 127 and one of the shroud side panels 125 via an attachment 164 and bolts 165. Reference numerals 166 and 166 denote horn members which are attached to the center stay 127 with bolts 167.

The radiator grill located at the center of the front of the car
The left and right lamp units 172 including the head lamps 171 and the head lamps 172A and the front combination lamps 172B are different from the first embodiment, as shown in FIG. 22, after the nose unit 121 is mounted on the vehicle body. It can be assembled in the process. That is, the radiator grill
171 is three engaging portions 171a, 171b, 171c are left and right engaging portions 1
71a and 171c are provided on the vertical wall portion 126A (engagement hole) of the shroud upper 126, and the central engagement portion 171b is provided with the bonnet lock means 161.
Vertical wall 126A of the shroud door upper 126 (engagement hole)
, Each of which is detachably locked. In the lamp unit 172, the mounting portions 172a and 172b on the side of the head lamp 172A are mounted on the side end of the shroud side panel 125 and the upper wall portion 126B (mounting hole) of the shroud door 126 using bolts 182 and 183, respectively. The engaging portion 172c of the combination lamp 172B is locked to the engaged portion 184 of the wheel apron.

With the above configuration, the nose unit assembling jig
122, the unit base 123 is provided with engagement pins 124 to 124E.
Each part is assembled in a state where it is positioned and supported in an engagement relationship with the engagement holes 126a, 126b, 127a, 128d, and 128d (see FIG. 20).

Then, after the assembly is completed, as shown in FIG.
On the 173, the nose unit 121 is mounted on the carriage 173 together with the jig 122, and is assembled to the front of the vehicle body 2 which is transporting the assembly line S (main line). At this time, in this embodiment, in order to further reduce the deformation of the vehicle body 2 (so-called opening), the front and left engaged portions 2A, 2A at the front left and right of the vehicle body 2 prevent deformation to prevent vehicle deformation. Engagement projections 174a, 17 of jig 174
4a is engaged so as to be disengageable, but since the cross member 138 has an effect of preventing deformation of the front part of the vehicle body, the engaged parts 2A, 2A and the deformation preventing jig 174 may be omitted. .

Thus, the center stay 127 and the support member 128 are screwed with the bolt 147 and the nut 146, respectively, by applying the nut 145 and the bolt 148 by the fastening tools 175 and 176, and fastened and fixed to the cross member 138.
Further, the bumper reinforcement 136 is attached to the side portion 138a of the cross member 138 by applying a nut 149 by a fastening tool 177 and screwing it to a bolt 137B.
Further, the shroud upper 126 is attached to the shroud bracket 141 by applying bolts 140, 140 to the shroud bracket 141 with the fastening tools 178, 178 and screwing the nuts 150, 150.

In this way, the nose unit 12 to the front of the vehicle body 2
After the assembly of 1 is completed, the radiator grill 171 and the lamp unit 172 are attached (see FIG. 22).

(Effect of the Invention) According to the invention of claim (1), the shroud door attachment portion on the vehicle body main body to which the fastening portions at both ends of the shroud door of the nose unit are fastened and fixed is provided at the upper front portion of the wheel apron. The shroud door mounting part is located inward of the vehicle body from the mounting part of the front fender because it is provided to project inward from the mounting part of the front fender that curves inward to the vehicle body beyond the upper front part of the wheel apron in front. When the nose unit is inserted into the vehicle body from the front side, the nose unit can be assembled to the vehicle body without interfering with the front fender.

According to the invention of claim (2), the mounting bracket serving as the shroud door mounting portion is fixed by the first fixing portion fixed to the front fender and the second fixing portion fixed to the front fender and the wheel apron. Since the fastening bracket is fixed, the mounting bracket can be assembled to the vehicle body by fastening without being fixed to the front fender, the wheel apron and the nose unit.

According to the third aspect of the present invention, the step portion to which the first fastening portions at both ends of the shroud upper of the nose unit are fastened is:
The vehicle body is formed so as to be lower than the mounting portion of the front fender, which is curved inward of the vehicle body beyond the upper front portion of the wheel apron in front of the upper front portion of the wheel apron. Therefore, the mounting portion (step portion) of the nose unit is shifted forward with respect to the mounting portion of the front fender. When the nose unit is inserted into the vehicle body from the front side, the nose unit interferes with the front fender. It can be assembled to the body of the vehicle without performing.

According to the invention of claim (4), the second fastening portion of the shroud upper is fastened and fixed to the front end portion of the front fender at a position forward of the step where the first fastening portion of the shroud upper is fastened and fixed. Therefore, the present invention can be applied to a case where the front end of the front fender is larger than the vehicle body and protrudes forward.

According to the invention of claim (5), the shroud door attachment portion is provided so as to project inward from the attachment portion of the front fender with respect to the vehicle body, and then the nose unit is assembled to the vehicle body. Even when the nose unit is assembled from the front side, both ends of the shroud door of the nose unit are attached to the shroud door mounting part of the vehicle body without the shroud door of the nose unit interfering with the front fender curved at the front side of the wheel apron. Positioned and can be easily assembled.

According to the invention of claim (6), the shroud door mounting portion is formed on the vehicle body so as to be lower than the mounting portion of the front fender with respect to the vehicle body front and lower than the mounting portion. The front nose unit is shifted to the front with respect to the mounting part of the front fender, so even when the nose unit is assembled to the vehicle body from the front side, the nose unit will interfere with the front fender curved at the front side of the wheel apron. Without doing so, both ends of the shroud door upper are positioned with respect to the shroud door mounting portion of the vehicle body, and thus the assembling can be easily performed.

[Brief description of the drawings]

1 to 8 show an embodiment of the present invention. FIG. 1 is a perspective view of a front portion of an automobile, FIG. 2 is a perspective view of a front portion of a vehicle body, and FIG. 4 is a perspective view of the nose unit, FIG. 5 is an exploded perspective view of the nose unit, FIG. 6 is a schematic perspective view of the unit base of the nose unit, and FIG. 7 is a modification of the unit base of the nose unit. FIG. 8 is a schematic perspective view of the example, and FIG. 8 is a cross-sectional view of the final mounted state. 9 to 11 show another embodiment, and FIG.
The figure is a detailed view around the mounting bracket, and FIG. 10 is A in FIG.
FIG. 11 is a sectional view taken along the line A, and FIG. 11 is a perspective view of a front portion of the vehicle body. FIG. 12 and FIG. 13 show still another embodiment,
FIG. 12 is a detailed view of a fastening portion of a fastening portion of the shroud upper, and FIG. 13 is a perspective view of a front portion of the vehicle body. 14 and 15 show another embodiment, FIG. 14 is a detailed view of a fastening portion of a fastening portion of a shroud upper, and FIG.
It is sectional drawing which follows the B line. 16 to 18 show a modification, FIG. 16 is a detailed view around the mounting bracket, and FIG.
FIG. 16 is a sectional view taken along the line CC of FIG. 16, and FIG. 18 is a perspective view of a front portion of the vehicle body. 19 to 25 show another embodiment of the present invention. FIG. 19 is a view showing the relationship between a unit base and a jig for assembling the nose unit, and FIG. 20 is an exploded perspective view of the nose unit. FIG. 21, FIG. 21 is an explanatory view of a state in which the nose unit is assembled to the front part of the vehicle body, FIG. 22 is a view showing a state after the nose unit is assembled, and FIGS.
It is sectional drawing in the -X line, the YY line, and the ZZ line. FIG. 26 is an explanatory view of a conventional example. 1… Automobile 2… Body body 3,121… Nose unit 4,97 …… Front fender 12,91,98 …… Wheel apron 15,81,111 …… Mounting bracket (mounting part) 21 …… Shroud panel 22,82, 92,95,110,126 Shroud upper 22b, 82a, 92a, 110a Fastening part 91a, 98a Step 96a Low part (first fastening part) 96b High part (second fastening part) 125 Shroud side panel (shroud panel) 141 …… Shroud bracket (mounting bracket)

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masamichi Kokai 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Co., Ltd. (72) Kiyoshige Yamada 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda (56) References JP-A-63-212184 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B62D 25/08 B62D 25/16

Claims (6)

(57) [Claims] 1. A left and right front fender, which is curved forward of an upper front portion of a wheel apron and inward of a vehicle body than an upper front portion of the wheel apron, is attached to a vehicle body. In a structure in which a nose unit having at least a shroud panel and a shroud door is mounted from the front of the vehicle body, a shroud door mounting portion projecting inward from a mounting portion of the front fender to the vehicle body is provided. A front vehicle body structure for a motor vehicle, wherein a fastening portion which is inserted through the inside of the front fender from the front and is fastened and fixed to the shroud door mounting portion is formed at both ends of the shroud upper. 2. The shroud door mounting portion is a mounting bracket. The mounting bracket has a first fixing portion fixed to a front fender at a base end thereof, and a second fixing portion fixed to a front fender and a wheel apron. The front body structure of an automobile according to claim 1, further comprising two fixing portions. 3. A left and right front fender, which is curved forward of an upper front portion of the wheel apron and inward of the vehicle body than an upper front portion of the wheel apron, is attached to the vehicle body. In a structure in which a nose unit having at least a shroud panel and a shroud door is attached from the front of the vehicle body, an upper portion of an engine room side wall of the vehicle body and a front side of a mounting portion of the front fender with respect to the vehicle body, and below the mounting portion. The nose unit has a step portion that is low and serves as a mounting portion for the nose unit. On the other hand, both ends of the shroud door upper of the nose unit are inserted into the front fender from the front of the step portion and fastened to the step portion. A front body structure of an automobile, wherein a first fastening portion to be formed is formed. 4. The front part of a vehicle according to claim 3, wherein both end portions of the shroud upper of the nose unit have second fastening portions fastened and fixed to a front end portion of the front fender at a position forward of the step portion. Body structure. 5. At least a shroud panel and a front part of a vehicle body to which left and right front fenders which are curved inward of the vehicle body from the upper front part of the wheel apron in front of the upper front part of the wheel apron are mounted. A method of mounting a nose unit having a shroud door from the front of a vehicle body, comprising: providing a shroud door mounting portion projecting inward from a mounting portion of the front fender on a vehicle body to which left and right front fenders are mounted; A process of inserting both ends of the shroud door of the nose unit from the front through the inside of the front fender to the body of the vehicle, and fastening both ends of the shroud door of the nose unit to the shroud door mounting portion. A method of assembling a front body of a vehicle, comprising: 6. A shroud panel and a shroud upper at least on a front portion of a vehicle body to which left and right front fenders which are curved inward of the vehicle body at an upper front portion of the wheel apron with respect to the upper front portion of the wheel apron are mounted. A method of attaching a nose unit having a front fender to a vehicle body to which left and right front fenders are attached, a step of providing a shroud door attachment portion at a position lower than the attachment portion in front of the attachment portion of the front fender, Inserting the nose unit into the vehicle body with both ends of the shroud door upper of the nose unit being inserted into the front fender from the front of the shroud door mounting portion; and mounting the shroud door mounting ends of the nose unit with the shroud upper mounting portions. And a step of fastening to Front body assembly method of the automobile to be.