CN1749085A - Cover beam installation structure - Google Patents

Abstract

The invention discloses a deck cross member mounting structure capable of reinforcing connection rigidity of a deck cross member and a front pillar lower part. A substantially cross-sectionally U-shaped bracket 10 which has an opening part on a vehicle rear part side and is constituted of two members is arranged between an end part of the deck cross member 1 extending in a vehicle width direction and arranged at the cabin inside of the front pillar lower part 4 and the cabin inside of the front pillar lower part 4. The end part of the deck cross member 1 is connected to the bracket 10 by passing through the bracket 10. The bracket 10 is connected to the front pillar lower part 4 at two upper and lower points of a front vehicle longitudinal direction of the deck cross member 1 and a point of a rear vehicle width direction of the deck cross member 1.

Description

Cover beam installation structure

technical field

The invention relates to a deck cross member installation structure, in particular to a deck cross member installation structure which connects the end of the deck cross member to the lower part of the front column.

Background technique

A steering wheel for changing the traveling direction of the vehicle to a desired direction is arranged in front of the driver's seat of the automobile. The steering column supporting the steering wheel supports its front portion by the steering mechanism on the engine room side and its rear portion by the deck beam. In addition, an instrument panel supported by a vehicle body frame member is disposed at the front of the vehicle compartment, and a deck beam is located at a lower portion of the instrument panel and supports the instrument panel. Both ends of the cover beam are connected to the lower parts of the front pillars on the left and right sides of the vehicle body frame parts located in the front part of the vehicle compartment. In addition, a cowl top is provided extending in the vehicle width direction in front of the cowl top, so that the engine compartment front is ensured by the vehicle compartment components composed of the cowl top and the cowl top. Rigidity of the part.

The middle part of the steering column in its length direction is installed on the cover beam, and a steering wheel with a larger mass is installed at its top. Therefore, when the steering column receives vibration from the engine, the steering wheel side tends to vibrate, and especially during idling, etc., the steering wheel at the tip of the steering column supported by the tubular cover beam may resonate.

Therefore, in order to increase the rigidity of the deck cross member supporting the steering column itself, for example, the vicinity of the steering column mounting portion is connected to the cowl top side by using a column bracket or the like, so that it can be used with respect to other vehicle body frame members. Three points to support the deck beams to dampen vibrations. Moreover, in order to improve the connection rigidity of the connecting portion between the deck beam and other vehicle body frame components, for example, brackets are provided at both ends of the deck beam, and a plurality of parts of the bracket are used in the vehicle width direction of the left and right front pillars. Bolt locking (hereinafter referred to as lateral locking), or multiple parts are connected with bolts in the front-rear direction of the vehicle (hereinafter referred to as front-rear locking). In addition, the following Japanese Patent Document 1 discloses an example thereof.

Japanese Patent Document 1: Japanese Patent Application Laid-Open No. 10-316025

Resonance on the side of the steering wheel that is subject to engine vibration, especially at idling, may cause discomfort to passengers. Therefore, in order to prevent the resonance of the steering wheel and the deck beam subjected to engine vibration, it is necessary to improve the rigidity of the deck beam itself and the connection rigidity between the deck beam and the lower part of the front pillar.

However, in the cover beam installation structure disclosed in Japanese Patent Document 1, there is still room for improving the connection rigidity, so a cover beam installation structure that can further enhance the connection rigidity is required.

Furthermore, the lateral locking bracket structure of the conventional deck beam is effective for enhancing the rigidity of the connection, but since the premise is that the installation is performed without the door, there is a limitation that the installation cannot be performed after the door is installed. . Therefore, in the assembly line where the cover beam is installed after the door is installed, it cannot cope with the assembly in the state after the door is installed, and the assembly line needs to be greatly changed.

Contents of the invention

An object of the present invention is to provide a deck beam mounting structure that eliminates discomfort caused by vibration of the steering wheel by strengthening the connection rigidity between the deck beam and the lower part of the front pillar, and does not require a large change in the assembly line.

In order to solve the above-mentioned technical defects in the cover beam installation structure according to the first aspect, the end of the cover beam extending along the vehicle width direction and arranged inside the vehicle interior under the front pillar is connected to the vehicle interior arranged under the front pillar. On the bracket on the side, the bracket is connected to the lower part of the front pillar in both the vehicle front-rear direction and the vehicle width direction.

In order to solve the above-mentioned technical defects of the deck beam installation structure according to the second aspect, in the deck beam installation structure according to the first aspect, the bracket is formed into a substantially U-shaped cross-section with an opening on the rear side of the vehicle, An end portion of the deck beam penetrates the bracket in the vehicle width direction and is connected to the bracket.

In order to solve the above-mentioned technical defects of the cover beam installation structure according to the third aspect, in the cover beam installation structure according to the second aspect, the bracket is connected to the The lower part of the above-mentioned front pillar.

In order to solve the above-mentioned technical defects of the deck beam installation structure according to the fourth aspect, in the deck beam installation structure according to the second or third aspect, the above-mentioned bracket is composed of two parts.

In order to solve the above-mentioned technical defects of the cover beam installation structure according to the fifth aspect, in any one of the above cover beam installation structures according to the first to fourth aspects, use the upper and lower points in the front and rear direction of the vehicle in front of the cover beam and a point in the vehicle width direction behind the above-mentioned deck cross member connects the above-mentioned bracket to the bottom of the above-mentioned front pillar.

According to the cover beam installation structure of the first aspect, the above-mentioned bracket can be connected to the lower part of the front pillar in the two directions of the vehicle front-rear direction and the vehicle width direction, and the vibration of the cover beam and the torsion of the cover beam can be suppressed. moment. Accordingly, the connection rigidity between the deck beam and the lower portion of the front pillar can be enhanced, and discomfort caused by vibration of the steering wheel due to vibration of the deck beam can be eliminated.

According to the installation structure of the deck beam of the second aspect, there are two connection positions between the end of the deck beam and the bracket in the prior art. Thus, the rigidity of the connection between the deck beam and the lower portion of the front pillar can be enhanced, so that discomfort caused by the vibration of the steering wheel due to the vibration of the deck beam can be eliminated.

According to the cover beam installation structure of the third aspect, since the opening is provided behind the vehicle interior of the bracket having a substantially U-shaped cross section, the connecting member can be easily attached, so the cover beam can be easily installed. to the lower part of the front pillar. Thereby, productivity can be improved.

According to the deck beam installation structure of the fourth aspect, the plate thickness and material of each member can be appropriately changed according to the purpose. For example, it is conceivable to increase the thickness of the parts on the lower side of the front pillar and thin the thickness of the parts on the interior side of the vehicle, or to make the parts on the lower side of the front pillar a highly rigid material and make the parts on the interior side For lightweight material. As a result, rigidity enhancement and weight reduction can be achieved at the same time.

According to the deck beam mounting structure of the fifth aspect, since the connecting member is not affected by the door, it can be mounted even after the door is mounted.

As a result, even in the assembly line where the door is installed first, no significant changes are required, so that an increase in production cost can be suppressed.

Description of drawings

Fig. 1 is a schematic diagram showing the installation structure of the cover beam according to the embodiment of the present invention;

2 is a perspective view showing a bracket with a substantially U-shaped cross section according to an embodiment of the present invention;

3 is a perspective view showing a bracket component A with a substantially U-shaped cross section according to an embodiment of the present invention;

4 is a perspective view showing a bracket component B with a substantially U-shaped cross-section according to an embodiment of the present invention; and

FIG. 5 is a perspective view showing a column side bracket according to an embodiment of the present invention.

Detailed ways

Next, a preferred embodiment of the installation structure of the deck beam according to the present invention will be described with reference to FIGS. 1 to 5 . Fig. 1 is a schematic view showing the installation structure of the cover beam according to the embodiment of the present invention; Fig. 2 is a perspective view showing a bracket with a U-shaped cross section according to the embodiment of the present invention; Fig. 3 is a perspective view showing the bracket according to the embodiment of the present invention A perspective view of a bracket component A with a substantially U-shaped cross section. FIG. 4 is a perspective view showing a bracket component B with a substantially U-shaped cross section according to an embodiment of the present invention. FIG. Perspective view of the column side bracket. In addition, Fr in the figure shows the vehicle front direction, In shows the vehicle width direction, and Up shows the vehicle upper direction.

As shown in Figure 1, at the front portion of the vehicle compartment, a front pillar lower part 4 is connected to the end of the cowl top cover 3, and a front pillar 2 extends on the top of the front pillar lower part 4, and the front pillar lower part 4, the side sill 5 extends in the direction of the rear of the vehicle. In addition, an instrument panel 6 is provided at a lower portion of the cowl top 3 .

In the front portion of the cabin, behind the cowl top 3 , a bracket 10 with a substantially U-shaped cross section is disposed between the end of the deck cross member 1 arranged in the vehicle width direction and the lower front pillar 4 .

The bracket 10 with a substantially U-shaped cross section shown in FIG. 2 is used to connect the right end of the cover beam 1 and the lower part 4 of the right front pillar. Here, a substantially U-shaped cross-section means a cross-sectional shape based on an x-y plane with the vehicle front-rear direction as the x-axis and the vehicle width direction as the y-axis. The reason for providing the opening 18 is to consider the operation when tightening and fixing the front and rear lock bolts 12 . The bracket 10 having a substantially U-shaped cross section is composed of two bracket components A having a substantially U-shaped cross-section shown in FIG. 3 and a bracket component B having a substantially U-shaped cross-section shown in FIG. .

Positioning pins 20 are arranged on the surface of the bracket 10 having a substantially U-shaped cross section facing the vehicle front and joining the bracket 11 on the pillar side, and front and rear locking bolt holes 14 are opened at two upper and lower positions. On the surface in contact with the front pillar lower part 4 , a cover plate beam through hole 21 is opened approximately at the center. Also, on the surface 25 in contact with the front pillar lower part 4, there is also a joint surface 24 which is indicated by oblique lines and is engaged with the front pillar lower part 4, and a lateral lock nut 23 is welded therein. A deck beam through hole 22 is opened at a substantially central position on a surface 26 facing the vehicle interior in the vehicle width direction. In addition, there is a portion for connecting other unillustrated components below the surface facing the vehicle interior in the vehicle width direction, and description thereof will be omitted.

On the surface 34 of the bracket component A with a substantially U-shaped cross-section shown in FIG. hole 14. A deck beam through hole 21 is opened at a substantially central position of a surface 35 facing the vehicle width direction and in contact with the front pillar lower portion 4 , and its peripheral portion serves as a joint surface 16 for joining to the deck beam 1 .

The shaded portion indicates the joint surface between the bracket component A having a substantially U-shaped cross section and the bracket component B (see FIG. 4 ) having a substantially U-shaped cross section, or the front pillar lower portion 4 . On the surface 35 in contact with the front pillar lower part 4, there is a joint surface 24 with the front pillar lower part 4 indicated by oblique lines, a joint surface 30 facing the vehicle upward direction, a joint surface 31 facing the vehicle downward direction, and a joint surface 31 facing the vehicle width direction. The interior side of the vehicle has a joint surface 32 .

On the surface 43 of the bracket component B having a substantially U-shaped cross-section shown in FIG. The joint surface 17 where the deck beam 1 joins. In addition, there are also portions for connection to other unillustrated components under the surface 43 facing the interior side of the vehicle width direction, and description thereof will be omitted.

The shaded portion indicates the joining surface of the bracket component B with a substantially U-shaped cross section and the bracket component A with a substantially U-shaped cross section. A joint surface 40 is provided facing the vehicle upward direction, a joint surface 41 is provided facing the vehicle downward direction, and a joint surface 42 is provided facing the vehicle interior side in the vehicle width direction.

On the surface of the bracket on the pillar side shown in FIG. 5 , which faces the vehicle rear and engages with the bracket 10 having a substantially U-shaped cross section, a positioning pin hole 50 is opened at a substantially central position. And, there are also front and rear locking bolt holes 52 of the column side bracket on the upper and lower sides, and front and rear locking nuts 51 are welded on the inside thereof.

Next, a procedure for mounting the bracket 10 having a substantially U-shaped cross section will be described.

The bracket 10 with a substantially U-shaped cross section is penetrated by the deck beam 1 and connected to the end of the deck beam 1 . The bracket 10 having a substantially U-shaped cross section is welded and connected at two positions of the end portion of the deck beam 1 and the deck beam joint surface 16 and the deck beam joint surface 17 .

The bracket 10 having a substantially U-shaped cross section determines the arrangement position by inserting the positioning pin 20 into the positioning pin hole 50 formed in the bracket 11 on the column side. After determining the configuration position, in the front-rear direction of the vehicle, the bracket 10 with a roughly U-shaped cross-section passes the front and rear locking bolts 12 into the front and rear locking bolt holes 14 located in front of the cover beam 1, and locks them with the front and rear. The bolt 12 and the front and rear locking nuts 51 welded on the column side bracket 11 are locked and fixed on the column side bracket 11 . And, in the vehicle width direction, the bracket 10 having a substantially U-shaped cross-section is formed by inserting the transverse locking bolt 13 into the transverse locking bolt hole 15 positioned at the rear lower part of the cover beam 1, and connecting the transverse locking bolt 13 with the transverse locking bolt 13. The transverse locking nut 23 welded on the bracket component A with a substantially U-shaped cross section is locked and fixed to the front pillar lower part 4 .

In this way, the lateral locking position is formed at the rear lower part of the deck beam 1, thereby suppressing the moment generated by the deck beam 1 in the screwing-in direction, and further strengthening the connection rigidity between the deck beam 1 and the lower front pillar 4.

In addition, in the prior art lateral locking type bracket, the bolts must be locked at multiple positions, and after the door is installed, the door becomes an obstacle and cannot be installed. However, by forming the lateral locking position as A position in the rear lower part of the deck cross member 1, so that it can be installed even after the doors have been installed.

The bracket 10 having a substantially U-shaped cross section is composed of two bracket components A having a substantially U-shaped cross-section and a bracket component B having a substantially U-shaped cross-section. The engagement surface 24 engages with the front pillar lower part 4 . The bracket component A with a substantially U-shaped cross-section and the bracket component B with a substantially U-shaped cross-section are respectively on the joint surface 30 and the joint surface 40, the joint surface 31 and the joint surface 41, and the joint surface 32 and the joint surface. Connect after welding on 42.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

For example, in the present embodiment, a bracket having a substantially U-shaped cross section has been described, but a bracket having a substantially L-shaped cross section formed by the surface joining the lower part of the front pillar and the surface joining the side of the pillar is described. Brackets are also suitable for use with the present invention.

Symbol Description

1 cover beam

2 front pillars

4 The lower part of the front pillar

10 Bracket with roughly U-shaped cross section

11 Post side brackets

12 front and rear locking bolts

13 Lateral locking bolts

14 front and rear locking bolt holes

15 Horizontal locking bolt holes

18 opening

23 transverse lock nut

51 front and rear lock nuts.

Claims (5)

1. cover plate beam mounting structure is characterized in that:

To be connected with the carriage of the car indoor that is configured in the A-pillar bottom along the end of cover plate beam that the overall width direction is configured in the car indoor of A-pillar bottom, described carriage is connected with described A-pillar bottom on vehicle fore-and-aft direction and overall width direction both direction.

2. cover plate beam mounting structure according to claim 1 is characterized in that:

It is the roughly コ word shape cross section of peristome that described carriage is formed the vehicle rear side;

The end of described cover plate beam is run through described carriage and is connected with described carriage on the overall width direction.

3. cover plate beam mounting structure according to claim 2 is characterized in that:

The link that passes with the described peristome from described carriage is connected to described A-pillar bottom with described carriage.

4. according to claim 2 or 3 described cover plate beam mounting structures, it is characterized in that:

With two described carriages of component set-up.

5. according to each described cover plate beam mounting structure in the claim 1 to 4, it is characterized in that:

Described carriage is connected to described A-pillar bottom with a point of the overall width direction at and the described cover plate beam rear up and down of the vehicle fore-and-aft direction in described cover plate beam the place ahead at 2.

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