JP2015189269A - Front structure of vehicle, and assembly method of front of the vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable mounting of an engine and a radiator at the same time by supporting the radiator so that it can be elastically displaced with respect to a lower jig.SOLUTION: A front structure of a vehicle comprises: a pair of left and right side members; a front end panel 6 having a pair of vertical members 14 integrally coupled to the side members and extending vertically, and a front end upper bar 15 to which the upper ends of the pair of vertical members are integrally coupled and which extends in a vehicle width direction Y; and a lower core 16 for supporting a heat exchanger 11 that is mounted more on the vehicle front side from a drive source 2 for traveling supported by the pair of side members. When the lower core is pushed up to a vehicle body and assembled, the lower core is once pushed down elastically, and the upper part of the heat exchanger is fitted to the front end upper bar. Then, the lower core is pushed back and integrally coupled to the pair of vertical members.

Description

  The present invention relates to a vehicle front structure in which a traveling drive source and a heat exchanger are integrally assembled to a vehicle body of an automobile from below.

  The vehicle is an automobile assembly line, in which a driving source for driving, front and rear axles, and a heat exchanger arranged on the front side of the vehicle from the driving source for driving are integrated into a vehicle body. Here, the vehicle body is reinforced by the left and right side members of the vehicle body, and a traveling drive source including an engine, a transmission, and the like is mounted on the left and right side members. Further, front and rear axles, which are separate from the driving source for traveling, are assembled to the front and rear of the left and right side members, and a heat exchanger is incorporated on the front side of the vehicle.

On the other hand, the heat exchanger assembled on the engine, transmission, front axle, and front cross member is integrated in the sub-line and pre-assembled as an engine module and supported on the carriage. On that basis, a technique in which the engine module side on the carriage is supported in advance so as not to interfere with the vehicle body, is transported to the assembly position, is incorporated into the vehicle body, and the vehicle assembly operation is performed. Is disclosed.
Here, in particular, it is assumed that the heat exchanger is sub-assembled with the traveling drive source and then attached to the front end panel. Then, conventionally, at the time of the assembly, the front end upper bar which is bolted to the top of the front end panel is removed to prevent interference. Then, the heat exchanger was inserted and assembled from above or below, and the front end upper bar was assembled again to complete the mounting of the heat exchanger.

Japanese Patent Publication No. 8-29732

Similarly, Patent Document 1 describes that a radiator and an engine are mounted at the same time. However, in this case as well, since the heat exchanger interferes with the front end upper bar during actual mounting, It was difficult.
In this way, when assembling the heat exchanger to the front end panel of the front of the vehicle body, the bolts are repeatedly attached and detached to avoid interference between the upper part of the heat exchanger and the front end upper bar. Leads to a decrease in workability. In addition, a plurality of bolts are required for fastening the front end upper bar to the front end panel, resulting in an increase in cost. Furthermore, mounting and removing the front end upper bar for assembly of the radiator causes deterioration of the body accuracy, and in particular, the assembly position accuracy of the headlamp installed in the vicinity is lowered, and the fit with the members around the headlamp Invited the fear of bad along.

  An object of the present invention is to solve the above-described problem. An object of the present invention is to provide a front portion of a vehicle that can mount an engine and a radiator simultaneously by supporting the radiator with respect to a lower jig so as to be elastically displaceable. It is to provide a structure and a method for assembling a front part of a vehicle.

  According to the first aspect of the present invention, a pair of vertical members integrally coupled to a pair of left and right side members extending in the longitudinal direction of the vehicle, a front end upper bar integrally coupled to the vertical members, and supported by the pair of side members A front of a vehicle having a lower core that supports a heat exchanger mounted on the front side of the traveling drive source and that extends in the vehicle width direction in which a positioning portion that overlaps the lower ends of the pair of vertical members is formed. In the structure, when the driving source for driving and the lower core are integrally pushed up from the lower part of the vehicle body and assembled, the lower core that supports the heat exchanger is inclined and pressed against the pair of vertical members. In this state, the driving source for traveling is assembled to the vehicle body body, and then the lower core is pushed down so that the upper part of the heat exchanger is moved forward. Integrally joined to the lower portion of the pair of vertical members of the lower cores were allowed to fit to the front end upper bar.

  According to a second aspect of the present invention, in the vehicle front structure according to the first aspect, the driving source for driving and the lower core are mounted on a lifter and pushed up integrally from the lower part of the vehicle body, and the pair of vertical members A positioning hole for positioning each other is formed in the lower end portion of the lifter and the lower core, and when the vertically long positioning pins provided in the lifter are pushed up toward the vehicle body, the lower ends of the pair of vertical members And the lower core of the pair of vertical members after the lower core is pushed down and the upper part of the heat exchanger is fitted to the front end upper bar. It is characterized in that it is integrally coupled to.

  According to a third aspect of the present invention, in the vehicle front structure according to the first or second aspect, the travel drive source is an engine module in which a pair of left and right axles are assembled to an engine.

  According to a fourth aspect of the invention of the vehicle front part assembling method, the pair of left and right side members extending rearward in the front of the vehicle, the pair of vertical members integrally coupled to the pair of side members, and the vertical member are integrally coupled. A front end panel having a front end upper bar and a heat exchanger mounted on the front side of the vehicle from a traveling drive source supported by the pair of side members are supported, and the lower ends of the pair of vertical members overlap. A vehicle front part assembly method including a lower core formed with a positioning portion and extending in a vehicle width direction, wherein the lower core that supports the traveling drive source and the heat exchanger in an inclined manner is mounted on a lifter. And the driving source for traveling in the state where the lower core is elastically pressed and positioned against the lower ends of the pair of vertical members. A step of assembling to the body body, a step of elastically pushing down the lower core to swing the upper part of the heat exchanger so as to stand up, and fitting the upper core to the upper support portion of the front end upper bar; And a step of integrally connecting to the lower ends of the pair of vertical members in this order.

  According to the first aspect of the present invention, while the lower core that supports the heat exchanger in an inclined state abuts against the pair of vertical members by elastic force, the driving source and the heat exchanger are assembled to the vehicle body, and then The lower core is lowered elastically, the upper portion of the heat exchanger is fitted to the upper support portion of the front end upper bar, and the lower core can be integrally coupled to the pair of vertical members, thereby improving workability. In particular, since the front end upper bar and a pair of vertical members are joined together in advance, the number of attachment / detachment steps can be reduced, the cost can be reduced by eliminating the fastening bolts, and the attachment / detachment of the front end upper bar can be eliminated. Therefore, it is possible to prevent the mounting position accuracy of the headlamp supported by the head from being lowered, prevent the body assembly accuracy from being deteriorated, and prevent the headlamp and the like from being defective.

  According to the second aspect of the present invention, the positioning pins provided on the lifter can be fitted into the lower end portions of the pair of vertical members and the positioning holes of the lower core, thereby positioning the both. Moreover, during this state, the driving source and the heat exchanger are assembled to the vehicle body, and then the lower core is elastically lowered, and the upper portion of the heat exchanger is fitted to the upper support portion of the front end upper bar. In addition, the lower core can be integrally coupled to the lower ends of the pair of vertical members, and the workability of positioning and mounting of the heat exchanger is improved.

  In the invention of claim 3, even when the driving source for driving is an engine module formed by assembling a pair of left and right axles, this can be assembled by pushing it up on the vehicle body together with the lower core that supports the heat exchanger in an inclined manner.

  The invention of claim 4 can provide a method for assembling a front part of a vehicle that can obtain the same effect by using the front structure of the vehicle of claim 1.

1 is a schematic side view of a vehicle to which a vehicle front structure according to an embodiment of the present invention is applied. It is a schematic plan view of the vehicle of FIG. FIG. 2 is a schematic front view of a front end panel and a peripheral member of the vehicle in FIG. 1. It is an AA line schematic sectional drawing of FIG. FIG. 2 is an explanatory diagram of the vehicle assembly line in FIG. 1, (a) is a schematic view of a vehicle body, (b) is a schematic side view of an engine module, and (c) is a schematic side view of a lifter on a carriage. FIG. 6 is a front view of the vicinity of the front end panel of the vehicle in FIG. 5, in which the lower core is in an initial position. FIG. 6 is a front view of the vicinity of the front end panel of the vehicle in FIG. 5, in which the lower core is in a first position. 5 is a front view of the vicinity of the front end panel of the vehicle in FIG. 5, showing a case where the lower core is in the second position, (a) is a front view, (b) is a schematic side view, and (c) is accompanied by a lift of the heat exchanger. It is a fitting operation state explanatory view of an upper pin. FIG. 5 is a front view of the vicinity of the front end panel of the vehicle in FIG. 5, showing the case where the lower core is in the third position, where (a) is a front view, (b) is a schematic side view, and (c) is the lowering and swinging of the heat exchanger. It is fitting operation state explanatory drawing of the upper pin accompanying.

A vehicle front structure to which the present invention is applied will be described with reference to the following drawings.
In short, when assembling the lower core, which is a lower jig supporting the driving source for driving and the inclined heat exchanger, to the vehicle body, the lower core is lowered elastically so that the upper part of the heat exchanger is connected to the front end. The upper and lower positions of the lower core are elastically displaced once after being fitted to the upper support part of the upper bar, and are integrally connected to the front end panel, so a heat exchanger can be mounted without interfering with the front end upper bar, and driving for driving It is possible to provide a vehicle front structure that can simultaneously mount a power source and a heat exchanger on a vehicle body.
Here, an example of an embodiment of the vehicle front structure according to the present invention will be described next.

As shown in FIGS. 1 and 2, the vehicle front portion structure according to the first embodiment includes a vehicle body 1 and an engine module 3 including a traveling drive source 2 assembled in front of the vehicle body 1 (left side in FIG. 1). .
At the front part of the vehicle body 1, a plurality of front body constituting members 4 (see FIG. 6), which are a combination of a plurality of press-molded members, are reinforced by left and right side members 5, and a front end is provided at the front ends of the left and right side members 5. The panel 6 is integrally connected. The vehicle body 1 has an engine module 3 mounted behind the front end panel 6 and is subjected to a fastening process.

The engine module 3 includes a travel drive source 2 including an engine 7, a transmission 8, and the like. Further, as shown in FIG. It comprises a drive shaft 901 and a knuckle 902 of the front axle 9 that are temporarily coupled.
Here, the engine 7 and the transmission 8 are integrated, and are fastened and supported to the left and right side members 5 and the front vehicle body constituting member 4 via a plurality of engine mounts (not shown) via brackets (not shown).

A strut 903 of the front axle 9 has a guide cone (see FIG. 1) c at the upper end thereof inserted into a fitting hole (not shown) of a strut tower 409 provided in the front vehicle body constituting member 4 to mount a plurality of axles (not shown). Fastened with bolts. The lower end thereof is bolted to a knuckle 902 on the axle lower assembly 900 side when the engine module 3 is assembled to the vehicle body 1.
As shown in FIGS. 1 and 2, the front end panel 6 has a heat exchanger 11 mounted on the front side of the vehicle with respect to the driving source 2 for traveling, and is attached to the center in the vehicle width direction Y. The frame 12 is supported. As shown in FIG. 3, the front end panel 6 is a rigid frame framework member integrally coupled to the front ends of the left and right side members 5. The front end panel 6 includes a pair of left and right vertical members 14 extending vertically, a beam-shaped front end upper bar 15 whose upper ends are integrally coupled and extending in the vehicle width direction Y, and a lower jig extending in the vehicle width direction Y. The lower core 16 and a reinforcing member (not shown) are provided.

  The pair of vertical members 14 are vertical columnar members extending vertically, and the front end portions of the left and right side members 5 are integrally coupled to the upper and lower intermediate portions by welding. The upper ends of the pair of vertical members 14 are integrally connected to a beam-like front end upper bar 15 extending in the vehicle width direction Y by welding.

  The lower end portions 141 of the pair of vertical members 14 are in contact with lower fastening portions 163 provided at two left and right portions of the lower core 16 extending in the vehicle width direction Y, and are fastened integrally with each other. A positioning hole d1 (see FIG. 3) is vertically formed through the lower fastening portion 163. Positioning holes d2 are vertically formed in the lower end portions 141 of the vertical members 14 that overlap therewith, and both positioning holes d1 and d2 can pass through the positioning pins 17 (for example, mounted on an assembly cart not shown). It is formed. By adopting such a configuration, the lower end portion 141 of the vertical member 14 on the front end panel 6 side and the lower core 16 that supports the heat exchanger 11 are positioned and integrated with each other. Combined with

As shown in FIGS. 3 and 4, the heat exchanger 11 forms a support frame 110 by left and right vertical frame portions 1111 that integrally couple the upper frame body 111 and the lower frame body 111 to each other. As shown in FIG. 4, the cooler heat dissipation core 112, the cooling water heat dissipation core 113, and the electric fan 114 form a three-layer structure between the support frames 110 and are separated from each other in the front-rear direction (left-right direction in FIG. 4). The whole is integrated with the support frame 110.
The upper and lower frame bodies 111 communicate with the upper and lower tanks wt through the cooling water radiating core 113 (see FIG. 4), and these tanks wt are connected to the engine body side cooling system via upper and lower cooling water pipes (not shown). A cooler heat radiating core 112 is fastened to the front side (left side in FIG. 4) of the upper and lower frame body 111 via a front fastening portion 112a, which communicates with an air conditioner refrigerant circulation system via an upper and lower air conditioner pipe (not shown). An electric fan 114 is fastened to the rear fastening portion 111a via the support frame 115 on the rear wall of the upper and lower frame bodies 111, and the electric fan 114 is driven and controlled in a timely manner by a control system (not shown).

  As shown in FIG. 3, a plurality of mounting pins 115 project vertically from the upper and lower frame bodies 111 of the heat exchanger 11 and can be fitted to the front end upper bar 15 and the lower core 16 that is a lower jig. . Here, the upper pin 115u (115) is fitted into the mounting hole 152 of the upper support portion 151 of the front end upper bar 15, and the lower pin 115d (115) is attached to the lower support portion 161 of the lower core 16 which is a lower jig. It is inserted into the hole 162. In particular, the lower support portion 161 in which the attachment hole 162 is formed is formed as an elastic bush, and can be elastically displaced in a state where the lower pin 115d is inserted. That is, the heat exchanger 11 is supported around the lower pin 115d so that the upper end can be swung in the vehicle front-rear direction (see FIG. 4).

Such a heat exchanger 11 is elastically supported by the lower support portion 161 of the lower core 16 and supports the upper end side so as to be swingable in the vehicle rearward direction.
Further, the lower core 16 is formed with lower fastening portions 163 at two positions on the left and right sides of the lower support portion 161. The lower end portions 141 of the pair of vertical members 14 are overlapped on the two lower fastening portions 163, and are configured to be integrally fastened after being held in the temporarily assembled state.
As shown in FIGS. 1 and 2, the engine module 3 is assembled and fastened to the vehicle body 1. At this time, the lower core 16 is elastically pressed against the lower end portion 141 of the vertical member 14, and is temporarily fixed. Is held in. During the temporarily fixed state, in addition to the engine module 3, the lower assembly 900 of the front axle 9 is configured to be bolted to a knuckle fastening portion (not shown) on the strut tower 903 side.

After the assembly of the engine module 3 and the front axle 9 to the vehicle body 1 is completed, the lower core 16 that is elastically pressed and held by the lower end portions 141 of the vertical member 14 is once subjected to elastic force. Accordingly, it is pushed downward by a predetermined amount (see the two-dot chain line in FIGS. 3 and 4).
At this time, the upper end side of the heat exchanger 11 is swung in the vehicle front direction, and the upper upper pin 115u is fitted into the mounting hole 152 of the upper support portion 151 of the front end upper bar 15. After that, the lower core 16 is raised and the lower fastening portions 161 provided at the two left and right positions are positioned and brought into contact with the lower end portions 141 of the pair of vertical members 14 by the positioning pins 17a and 17b. Is fastened to the front end panel 6.

Thus, the vehicle body 1, the driving source 2, the front axle 9, and the heat exchanger 11 are assembled using the positioning pins 17a and 17b. By assembling the front end panel 6 so as to be integrally fastened after temporary fixing, the following effects can be obtained.
The lower core 16 that supports the heat exchanger 11 in an inclined state (see FIGS. 1 and 4) is configured to press and abut against the lower ends of the pair of vertical members 14 by elastic force. The axle 9 is assembled to the vehicle body 1. Thereafter, the lower core 16 is elastically pressed and lowered to fit the upper portion of the heat exchanger 11 to the upper support portion 151 of the front end upper bar 15. In addition, the lower core 16 can be brought into contact with the lower end portions of the pair of vertical members 14 so as to be integrally coupled, thereby improving the assembling workability.

In particular, since the beam-shaped front end upper bar 15 and the upper ends of the pair of vertical members 14 are integrally connected in advance and conveyed to the assembly line, the number of steps for attaching and detaching the front end upper bar 15 can be reduced. Cost reduction by elimination can be achieved. In addition, since the mounting and dismounting of the front end upper bar 15 can be abolished, it is possible to prevent the mounting position accuracy of the mounting frame 12 of the headlamp HL supported by the front end panel 6 from being lowered, and to prevent deterioration of the body mounting accuracy. It is possible to prevent defects along the mating with the mounting frame 12 and a gap shift of a relative gap (refer to reference symbol “a” in FIG. 3) between members (for example, outer wall plates to be attached to each other in FIG. 3). .
In some cases, without using the positioning pins 17a and 17b, the lower core 16 is slid up and down with respect to the lower end portion of the vertical member 14 using a guide guide frame (not shown) or an assembly robot. The vehicle body 1, the travel drive source 2, the front axle 9, and the heat exchanger 11 may be assembled.

Next, FIG. 5 to FIG. 9 show an example of an embodiment of an assembling apparatus for assembling the vehicle body 1 and the engine module 3 to which the front structure of the vehicle is applied, and a vehicle front assembling method using the apparatus. This will be described in detail.
As shown in FIG. 5, the vehicle body assembly / assembly apparatus includes a vehicle assembly line 30. This vehicle assembly line 30 is provided with a hanger transport line 40 at the upper part and a transport rail 50 at the lower part, both of which are moved up and down on the front region side (right side in the drawing) before the vehicle body 1 reaches the assembly position PW. It is comprised so that it may be arranged in parallel facing.

The hanger transport line 40 mounts the vehicle body 1 on a hanger (not shown) and transports it to the assembly position PW, and the transport rail 50 transports the transport carriage 58 on which the lifter 51 is mounted to the assembly position PW.
As shown in FIG. 5A, the vehicle body 1 includes a front vehicle body outer wall constituent member 4, an inner wall constituent member (not shown), and left and right side members 5 that connect and strengthen them.
Here, a floor fr on the passenger compartment side is joined and arranged in the upper area of the central portion of the left and right side members 5 to enhance rigidity. An engine room er is provided in front of the floor fr, and a front end panel 6 described later is integrally coupled to the front end thereof. In addition, the code | symbol dc in FIGS. 6-9 shows a part of tire house which covers a right-and-left wheel from inner upper direction. Further, among the inner wall members facing the engine room er on the vehicle body 1 side, strut towers 409 protrude from the left and right inner walls, and the upper end portion of the strut 903 of the front axle 9 is previously bolted to the strut tower 409. It has been stopped. Further, a front end panel 6 described later is integrally coupled to the front ends of the left and right side members 5.

Further, as shown in FIG. 5C, a pallet 52 is supported on the lifter 51 mounted on the transport carriage 58, and the engine module 3 shown in FIG.
The engine module 3 is assembled and formed in advance in a separate subline. The engine module 3 includes a traveling drive source 2 including an engine 7 and a transmission 8, an axle lower assembly 900 of a front axle 9 temporarily coupled to the traveling drive source 2, and a lower core 16 extending in the vehicle width direction Y. It is comprised with the heat exchanger 11 by which the lower part was supported. The engine module 3 is placed on the pallet 52 and supported on the lifter 51.

  Here, a pair of positioning pins 17 project in a vertical direction in a region of the upper surface of the lifter 51 that does not overlap the pallet 52, and a coil spring 53 is loosely fitted to the pins 17. Here, the pair of positioning pins 17a and 17b (referred to as 17 in common description) are positioned at the lower end of the vertical member 14 that overlaps the positioning holes d1 (see FIG. 3) of the pair of lower fastening portions 163 of the lower core 16. 141 is formed so that it can be inserted into the positioning hole d2. The pair of left and right positioning pins 17 differ in length by a predetermined amount dL.

By passing both positioning holes d 1 and d 2 through the positioning pin 17, the lower end portion 141 of the vertical member 14 and the lower core 16 can be positioned, and the lower core 16 is supported by the coil spring 53 so that it can be elastically displaced downward. it can.
The vehicle body 1, the engine module 3, and the front module FM including the axle lower assembly 900 are transported to the assembly position PW of the vehicle assembly line 30 and held at the initial position H0 shown in FIG. 6 (lifter mounting process) ). Next, the lifter 51 is lifted by the initial operation amount dL0 shown in FIG. 6, and the lifter 51 is moved to the first position H1 shown in FIG. Therefore, one long positioning pin 17a is aligned with the left and right ones (right side in FIG. 3) of the positioning holes d1 and d2 of the lower end portion 141 of the left and right vertical members 14, and then the lifter 51 is placed thereon. Is moved by a predetermined amount dL1 (see FIG. 7) to switch to the second position H2 (see FIG. 8).

Here, the right one is positioned, and then the other short positioning pin 17b is positioned with respect to both positioning holes d1 and d2 (left side in FIG. 8) of the lower end portion 141 of the other left vertical member 14. Match. Then, the lifter 51 is moved by a predetermined amount dL2 (see FIG. 8) and switched to the third position H3 (see FIG. 9A).
At the third position H3, the left and right positioning pins 17a and 17b are fully inserted into the positioning holes d1 and d2 of the lower end portion 141 of the left and right vertical members 14 with the lower core 16. In addition, the lower core 16 is elastically pushed up by the action of the coil spring 53 (see the two-dot chain line in FIG. 3), and the lower core upper position r1 (at the position of the third position H3) is in contact with the lower ends 141 of the left and right vertical members 14. To the corresponding). While this state is maintained, the lower end portions 141 of the left and right vertical members 14 and the pair of lower fastening portions 161 of the lower core 16 are positioned. In addition, the heat exchanger is supported in a state where the lower part is supported by the lower core and the upper part is inclined toward the traveling drive source 2 as shown by a two-dot chain line in FIG. 15 is avoided.

Further, during this time, the traveling drive source 2 is assembled to the vehicle body 1, and the axle lower assembly 900 of the front axle 9 temporarily coupled to the traveling drive source 2 is bolted to the lower end portion of the strut 903 extending from the vehicle body side. (Body body assembly process).
After that, the lower core 16 is pushed down along the left and right positioning pins 17a and 17b, and is elastically lowered from the lower core upper position r1 (position at the third position H3) (see the two-dot chain line in FIG. 4). Switch to r2 (position lower by a predetermined amount db than the lower core upper position r1).
With the lower core 16 in the lower core lower position r2 (see FIG. 3), the upper portion of the heat exchanger 11 is fitted to the upper support portion of the front end upper bar (heat exchanger fitting step). Then, the lower core 16 is elastically pushed up to the lower end portions 141 of the pair of vertical members and returned to the lower core upper position r1 (corresponding to the position at the fourth position H4) (see FIGS. 3 and 9). In this state, the lower core 16 is integrally fastened to the lower end portions 141 of the left and right vertical members 14 (lower core integrated coupling step).

As a result, the lower part is supported by the vehicle body 1 by the traveling drive source 2 on the engine module 3 side, the axle lower assembly 900 of the front axle 9 temporarily coupled to the traveling drive source 2, and the lower core 16. The assembly with the heat exchanger 11 is completed.
Thereafter, at the assembly position PW, the pallet 52 is lowered below the engine module 3 and the front axle 9 by the lifter 51, and the left and right positioning pins 17a and 17b are pulled out from the lower core 16 side and held at the initial position H0. The Next, the vehicle body 1 assembled with the front module FM is transported to the next process along the hanger transport line 40, and the lifter 51 side is transported to the next process along the transport rail 50.

  In such a vehicle front part assembling method, the traveling drive source 2 and the heat exchanger 11 can be mounted substantially simultaneously at the same time without interfering with the front end upper bar 15. That is, at the assembly position PW of the vehicle assembly line 30, the driving source 2 and the heat exchanger 11 are assembled to the vehicle body 1, and then the lower core 16 is elastically lowered to connect the heat exchanger 11 to the front end upper. The bar 15 is fitted to the upper support portion, and the lower core can be brought into contact with and coupled to the lower end portions of the pair of vertical members, thereby improving workability.

  In particular, a beam-shaped front end upper bar 15 and a pair of vertical members 14 are integrally coupled in advance. For this reason, man-hours for attaching / detaching the front end upper bar 15 can be reduced, cost can be reduced by removing a plurality of fastening bolts, and attaching / detaching of the front end upper bar 15 can be eliminated. Further, it is possible to prevent a reduction in the mounting position accuracy of the headlamp supported on the front end panel 6 side, prevent a deterioration in the body assembling accuracy, and prevent a defect along the headlamp or the like.

  Further, the positioning pins 17a and 17b provided on the lifter 51 can be inserted into the lower end portions of the pair of vertical members 14 and the positioning holes d1 and d2 of the lower core 16 so as to position them. In addition, during this state, the driving source 2 and the heat exchanger 11 are assembled to the vehicle body 1, and then the lower core 16 is elastically lowered to support the upper portion of the heat exchanger 11 above the front end upper bar. The lower core 16 can be integrally coupled to the lower ends of the pair of vertical members 14 and the workability of positioning and mounting of the heat exchanger 11 is improved.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments, and the present invention described in the claims is not specifically limited by the above description. Various modifications and changes are possible within the scope of the above.

  For example, in the vehicle front structure to which the present invention is applied, the engine module 3 is provisionally assembled with the driving source 2 and the front axle 9 in a separate sub-line, but the engine module 3 is assembled only as the driving source 2. Also good. Furthermore, the present invention is not limited to the type described above, and other types, for example, the front axle 9 may be assembled to the vehicle body in the next step, and in this case, substantially the same effect can be obtained. It should be noted that the effects described in the embodiments of the present invention only list the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. It is not a thing.

DESCRIPTION OF SYMBOLS 1 Vehicle body 2 Driving drive source 3 Engine module 5 Side member 6 Front end panel 9 Front axle 11 Heat exchanger 14 Vertical member 15 Front end upper bar 151 Upper support part 152 Mounting hole 16 Lower core 17a, 17b Positioning pin 30 Vehicle assembly Line 51 Lifter d1 Lower core positioning hole d2 Vertical member positioning hole PW Assembly position

Claims (4)

A pair of vertical members coupled to a pair of left and right side members extending in the rearward direction of the vehicle and extending in the vertical direction; a front end upper bar integrally coupled to an upper portion of the vertical members;
A lower core extending in the vehicle width direction, which supports a heat exchanger mounted on the front side of the driving source for traveling supported by the pair of side members, and in which a positioning portion where the lower ends of the pair of vertical members overlap is formed; A front structure of a vehicle having
When assembling the travel drive source and the lower core integrally from the lower part of the vehicle body,
The driving source for travel is assembled to the vehicle body body in a state where the lower core supporting the heat exchanger in an inclined manner is pressed against the pair of vertical members, and then the lower core is pushed down to A vehicle front structure in which an upper portion is fitted to the front end upper bar and then the lower core is integrally coupled to lower ends of the pair of vertical members. The traveling drive source and the lower core are placed on a lifter and pushed up integrally,
Positioning holes for positioning the upper and lower ends of the pair of vertical members and the lower core are formed on each other,
When a vertically long positioning pin provided on the lifter is pushed up toward the vehicle body, the lower core of the pair of vertical members can be inserted into the positioning holes of the lower core, and the lower core is then pushed down. 2. The vehicle front structure according to claim 1, wherein the lower core is integrally coupled to the lower end portions of the pair of vertical members after the upper portion of the heat exchanger is fitted to the front end upper bar.   3. The vehicle front structure according to claim 1, wherein the driving source for traveling is an engine module in which a pair of left and right axles are assembled to an engine. A pair of left and right side members extending rearward of the vehicle;
A front end panel having a pair of vertical members integrally coupled to the pair of side members and a front end upper bar integrally coupled to the vertical members;
A heat exchanger mounted on the front side of the vehicle is supported by a traveling drive source supported by the pair of side members, and extends in the vehicle width direction Y in which a positioning portion where the lower ends of the pair of vertical members overlap is formed. A method for assembling a front part of a vehicle having a lower core,
Mounting the lower core supporting the traveling drive source and the heat exchanger in an inclined manner on a lifter;
Assembling the driving source for traveling to the vehicle body body in a state where the lower core is elastically pressed against the lower ends of the pair of vertical members and positioned;
A step of elastically pushing down the lower core and swinging the upper part of the heat exchanger upright to be fitted to the upper support portion of the front end upper bar;
A method of assembling a front part of a vehicle, wherein the step of elastically pushing back the lower core and integrally coupling the lower cores to the lower ends of the pair of vertical members is performed in this order.

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