KR20040036090A - Structure for mounting nut of front end module in vehicle - Google Patents

Abstract

PURPOSE: A structure for mounting nuts of a front end module of a vehicle is provided to reduce time for assembling the nut to a front panel and to reduce the manufacturing cost and weight by simplifying the structure of the nut. CONSTITUTION: A front end module of a vehicle includes a square front panel(100) comprising upper and lower horizontal units, left and right vertical units for connecting the upper and lower horizontal units, and a hollow cooling device mounting part; a heat exchanger installed to the front panel; and peripheral devices as a bumper beam(200) and a head lamp installed to the front panel. A structure for mounting nuts(400) of the front end module is composed of a nut inserting unit(120) integrally formed to the front panel and the nut fixed to the nut inserting unit in a fitting method and combined with a bolt(300) for assembling the heat exchanger and peripheral devices. A hook(121) is formed at an inlet of the nut inserting unit not to take off the nut.

Description

Front end module nut mounting structure of vehicle {STRUCTURE FOR MOUNTING NUT OF FRONT END MODULE IN VEHICLE}

The present invention relates to a front end module nut mounting structure of a vehicle, and more particularly, to improve the assemblability of a nut for installing an accessory such as a bumper beam on a front panel, and to prevent wear of parts. Front end module nut mounting structure.

In general, a cooling device such as a radiator, a condenser, a fan, and the like is mounted on the front of the engine room of the vehicle, and is mounted in the engine compartment in the assembly line (trim line) of the vehicle.

However, since the engine room has a very small space for mounting the above-mentioned cooling devices, a front end module has recently been proposed in which the cooling devices are modularized and installed in the vehicle body.

Figure 1 is an exploded perspective view of the front end module, as shown in the front end module (FRONT END MODULE, abbreviated as "FEM"), the front panel 10 (so-called bolster) is installed in the front portion of the body frame (also called a bolster or carrier), cooling devices such as radiators (1), condensers (2), fans (3), etc. installed on the front panel (10) and headlamps (4) and bumper beams (5) ) And peripheral devices. That is, the front panel 10 serves as a frame for installing the cooling device and the peripheral device in the vehicle body.

The front panel 10 consists of upper and lower horizontal portions 11 and 12 and vertical portions 13 and 14 connecting left and right sides of the horizontal portions 11 and 12 to a hollow portion in the center thereof. The cooling device mounting part 15 is provided, and the head lamp mounting part 16, the bumper beam mounting part 17, etc. are provided in both right and left sides. The front panel 10 may be manufactured by injection molding.

Usually the condenser 2 is installed in front of the radiator 1 and the fan 3 is assembled behind the radiator 1 via the fan shroud 3a.

The head lamp 4, the bumper beam 5, and the like are installed on the front panel 10 by bolting.

Referring to the assembly structure of the peripheral device of the front end module according to the prior art as an example, as shown in Figure 1, the bumper stay (5a) formed on both sides of the rear surface of the bumper beam (5) a plurality of bolt holes 5b is punctured, and both side bumper beam mounting portions 17 of the front panel 10 are provided with nuts 18 communicating with the bolt holes 5b of the bumper beams 5, and the bolt holes 5b and the nuts are provided. The bumper beam 5 is assembled to the front panel 10 by fastening the bolt 19 to 18.

As described above, the nut 18 for fastening the bolts 19 to the front panel 10 such as the bumper beam 5 is mounted to the front panel 10 by insert injection.

However, the nut mounting structure of the front end module according to the prior art has the following problems.

In order to insert the nut 18 into the front panel 10, a core for supporting the nut 18 is required, and since a time is required for the nut 18 to be inserted into the front panel 10, the injection is necessary. The disadvantage is that the cycle is long and the injection mold is complicated.

As shown in FIG. 2, the outer circumferential surface of the nut 18 is uneven in order to prevent the nut 18 from being removed from the front panel 10. Therefore, the manufacturing cost of the nut 18 is expensive, and the weight is heavy. There is also.

In addition, since the position of the nut 18 is not changed when the insert is injection-molded to the front panel 10, due to a production error, for example, the center line of the bolt hole 5b of the bumper beam 5 and the nut hole of the nut 18 It is difficult to fasten the bolt 19 even if not finely matched, and if the bolt 19 is forcibly fastened, the bolt 19 and the nut 18 may be worn down and the fastening force may be weakened.

In addition, the nut 18 has a circular cross section, and when the bolt 19 is tightened, the nut 18 turns away from the front panel 10, whereby the nut 18 inserts the insert into the front panel 10. There is also a disadvantage in that the entire front panel 10 can not be used.

An object of the present invention is to provide a nut mounting structure of a front end module to reduce the time for assembling the nut to the front panel to solve the above problems.

In addition, another object of the present invention is to simplify the structure of the nut to reduce the manufacturing cost, and to reduce the weight.

Still another object of the present invention is to allow the nut to move finely in the front panel so that the bolt can be fastened even when the center line of the bolt hole and the nut hole do not coincide due to production error.

Another object of the present invention is to prevent the nut from turning in a state where it is installed on the front panel.

1 is an exploded perspective view of a typical front end module.

Figure 2 is a side cross-sectional view showing a front end module nut mounting structure of the vehicle according to the prior art.

3 is a front perspective view of a front panel to which a front end module nut mounting structure of a vehicle according to the present invention is applied, and an arc inside is a rear perspective view of a nut in a state in which the nut according to the front end module nut mounting structure of the vehicle according to the present invention is separated;

Figure 4 is an enlarged view showing the front end module nut mounting structure of the present invention.

Figure 5 is a side cross-sectional view showing a front end module nut mounting structure according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: front panel, 110: bumper beam mounting portion

120: nut insertion portion, 121: hook

121a: inclined portion, 121b: jaw for preventing separation

200: bumper beam, 300: bolt

400: nut,

The front end module nut mounting structure of the vehicle according to the present invention for achieving the object as described above comprises a hollow cooling device mounting portion consisting of the upper and lower horizontal portions and the left and right vertical portions connecting the upper and lower horizontal portions. A substantially square frame front panel; A heat exchanger installed at the front panel; And, the front end module for a vehicle comprising a; peripheral device such as a bumper beam, a head lamp installed on the front panel,

A nut insert is integrally formed on the front panel, and a nut to which a bolt for assembling the heat exchanger, a peripheral device, and the like is fastened to the nut insert is fixed in a fitting manner.

A hook for preventing the nut from falling out may be formed at an inlet side of the nut insertion unit.

Preferably, the nut is formed so that its outer circumferential surface is polygonal so as not to rotate in the nut insertion portion.

The nut may be inserted to allow the nut to flow finely up, down, left, and right in the nut insert so that the bolt hole of the peripheral device and the hole center of the nut may coincide with each other.

The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

As shown in FIG. 3, according to the front end module nut mounting structure of the present invention, bumper beam mounting units 110 are formed at both sides of the front panel 100, respectively, and the bumper beam 200 is provided at the front side of the front panel 100. ) And the bumper stays 210 on both sides of the rear surface are fixed to the bumper beam mounting unit 110. The bumper stay 210 is fixed to the bumper beam mounting unit 110 via a bolt 300. The bumper beam mounting unit 110 of the front panel 100 is provided with a nut 400 to which the bolt 300 is fastened.

As an example of the mounting structure of the nut 400, as shown in the arc of FIG. 3, and FIGS. 4 and 5, the nut insertion part 120 is disposed on the rear surface of the bumper beam mounting unit 110 (shown in FIGS. 3 and 5). ) Is protruded to the rear, the nut insert 120 may be assembled in a nut 400 fitting manner.

A hook 121 may be integrally formed at the inlet side of the nut insertion part 120 to prevent the nut 400 from being pulled out. Preferably, the hook 121 may be formed in the inlet-side up and down or left and right symmetry of the nut insert 120 (only shown up and down symmetry in the drawing).

As shown in Figure 5, the hook 121, the inclined portion 121a is formed to be inclined so as to smoothly insert the nut 400 on the opposite surface of the distal end portion, the separation prevention for supporting the nut 400 does not fall out It may be made of a jaw (121b).

The fixing structure of the nut 400 is not limited to being fixed by the hook 121, and although not shown in the drawing, one side of the nut insert 400 is preferably opened to open the nut 400 through the opening. It may be made of a structure for sliding insertion.

The nut insert 120 may have a size such that the nut 400 may be moved up and down / left and right within a limit that the nut 400 is not removed by the hook 121 therein.

The inner circumferential surface of the nut insertion portion 120 and the outer circumferential surface of the nut 400 may be formed in a triangle, a polygon, not a circle, and preferably have a quadrangle so that the nut 400 does not run in the nut insertion portion 120.

The action of the nut mounting structure of the front end module according to the present invention configured as described above is as follows.

The front panel 100 may be manufactured by injection molding, and the nut insert 120 is integrally injection molded during the injection molding of the front panel 100.

If the nut 400 is forcibly pushed from the rear side to the nut insert 120 of the front panel 100 in order to install the nut 400 before installing the bumper beam 200 on the front panel 100, As shown in FIG. 5, the nut 400 is gradually inserted into the inclined portion 121a of the hook 121 so that the hook 121 is opened like an imaginary line, and the nut 400 is the nut insertion portion 120. When fully inserted into the hook 121 is opened by its elastic force as the solid line is collected in the same state as the separation prevention jaw 121b supports the nut 400, so the nut 400 is not separated from the nut insert 120 Do not.

In this way, the peripheral device such as the bumper beam 200 is installed on the front panel 100 while the nut 400 is assembled to the front panel 100, and the installation method thereof will be described as shown in FIG. 3. The bumper beam 200 is disposed such that the bolt hole of the bumper stay 210 formed on the rear surface of the bumper beam 200 and the nut 400 of the bumper beam mounting unit 120 coincide with each other. The bumper beam 200 is installed on the front panel 100 by fastening the bolt 300. When fastening the bolt 300, due to the production error of the bolt ball, the position error of the nut 400, etc., the center line of the bolt ball and the nut ball of the nut 400 may not match, and thus the center line of the bolt ball and the nut ball Even if this does not match, the nut 400 can be moved finely without falling out of the nut insertion part 120, so that the nut 400 is moved by the fastening force of the bolt 300 when the bolt 300 is fastened to the bolt 300. Is fastened without difficulty.

Therefore, the nut 400 may be installed by a simple operation of inserting the nut 400 into the nut insert 120 of the front panel 100, and the operation of inserting the nut 400 inserts the nut into the front panel as in the prior art. It doesn't take longer.

In addition, since the nut 400 is fixed by the hook 121 of the nut insertion part 120 and is not fixed by itself, the outer circumferential surface of the nut does not have to be formed with irregularities as in the conventional insert nut.

In addition, since the nut 400 may move finely in the nut insertion part 120, the bolt 300 may be fastened even if the bolt hole and the nut hole do not coincide.

In addition, the nut 400 and the nut inserting portion 120 are formed in a polygonal shape so that the nut 400 does not drift from the nut inserting portion 120 when the bolt 300 is fastened.

In the above, only the nut mounting structure for assembling the bumper beam to the front panel is illustrated and described as an example for convenience. However, the nut mounting structure for assembling the heat exchanger, etc. The same may be done as described above, and these should also be included in the scope of the present invention.

As described above, according to the nut mounting structure of the front end module of the vehicle according to the present invention, since the nut can be installed by manually inserting the insert, the insert is excluded, thereby simplifying the injection mold to the front panel, and the assembly time. It is short, and productivity can be improved.

In addition, the structure of the nut can be simplified, and manufacturing cost according to the processing of the nut can be reduced, and the weight becomes light.

In addition, since the nut may flow to the front panel to some extent, even if the bolt hole and the nut hole do not match, the bolt can be fastened, so that the fastening operation is convenient and the wear of the bolt and nut can be prevented.

In addition, since the nut does not run in the nut insertion portion, the bolt fastening operation is convenient, and there is an effect of reducing the economic loss due to the disposal of the defective product.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described. Rather, those skilled in the art will appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims. Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

Claims (4)

A substantially rectangular frame-shaped front panel (100) having a hollow cooling device mounting portion including upper and lower horizontal portions and left and right vertical portions connecting the upper and lower horizontal portions; A heat exchanger installed at the front panel; In the front end module of the vehicle comprising a; peripheral device such as a bumper beam 200, a headlamp installed on the front panel, A nut insert 120 is integrally formed on the front panel, and a nut 400 to which the bolt 300 for assembling the heat exchanger and a peripheral device is fastened to the nut insert is fixed in a fitting manner. Front end module nut mounting structure. The front end module nut mounting structure of claim 1, wherein a hook (121) is formed at an inlet side of the nut insert to prevent the nut from being pulled out. The front end all-nut mounting structure of a vehicle according to claim 1 or 2, wherein the nut has a polygonal outer circumferential surface such that the nut does not run in the nut insertion portion. 4. The front end module of a vehicle according to claim 3, wherein the nut is inserted in the nut insertion part so as to flow finely up, down, left and right so as to coincide with the center of the hole of the nut and the bolt hole of the peripheral device. Nut mounting structure.