JP2551335Y2 - Coupling structure of quarter pillar and back panel of vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for connecting a back panel and a quarter pillar at a rear portion of a cab in a vehicle such as a truck in which a cab and a luggage compartment are separately formed.

[0002]

2. Description of the Related Art Generally, a vehicle such as a truck in which a driver's seat and a luggage compartment are separately and independently provided, as shown in FIG. 3. The parts of the side member 4, the floor panel 5, and the back panel 6 are welded by an automatic welding assembly line to form a box-shaped frame structure. And parts that require particularly large strength and rigidity, such as pillars,
In the window frame portion of the back window, the components are configured in a closed cross-sectional structure.

In the back panel 6 of the driver's cab 1 as described above, as shown in FIG. 3, a window lower side 11 formed by bending the back panel 10 is formed for the purpose of forming a window frame. However, in order to enhance the rigidity of the vehicle body, a highly rigid reinforcement 12 having a so-called hat-shaped cross section is joined to the surface of the cab at the lower side 11 of the window. The opposite ends of the back panel 10 in the vehicle width direction are joined to a quarter pillar 13 extending substantially vertically by a welding assembly line. In this assembly, the back panel 10 has a closed cross section with respect to the lower window portion 11 of the window. Both ends in the vehicle width direction of the reinforce 12 having a structure have quarter pillars 13 also having a closed cross-sectional structure formed by a quarter inner panel 14 and a quarter outer panel 15.
It is difficult to spot-weld directly to steel.

For this reason, conventionally, as shown in FIG.
Both ends 11a in the vehicle width direction of the lower window portion 11 which is a part of the back panel 10 and the inner opening edge 15a of the quarter outer panel 15 are overlapped with each other.
Quarter inner panel 14 formed in a cylindrical shape with respect to 5a
Of the quarter inner panel 1
In many cases, a spot gun is inserted from the work hole X drilled in the step 4, and the lower window portion 11 and the quarter outer panel 15 are spot-welded.

By the way, as described above, the back panel 10
In the configuration in which the lower window portion 11 and the outer quarter panel 15 are simply overlapped and connected, it is not possible to obtain a sufficient connection rigidity between them. For this reason, the back panel 10 vibrates at a relatively low natural frequency, which causes a problem that a muffled sound or the like is generated inside the cab 1. Therefore, it is desired to increase the coupling stiffness of the coupling portion having the above-described closed cross-sectional structure to reduce the occurrence of muffled noise.

[0006] Conventionally, regarding the connection between the quarter pillar and the portion of the closed cross-section structure of the back panel, for example,
As shown in Japanese Patent Application Laid-Open No. 2-120074, a long work hole is provided vertically in the reinforcement. It is disclosed that a spot gun is inserted into the inside of the portion having the closed cross-sectional structure from the working hole so that the lower side of the window of the back panel and the quarter outer panel, and the reinforcement and the quarter inner panel can be welded.

[0007]

However, in the above-mentioned prior art, a long working hole is provided in the reinforcement so that the appearance is poor and the rigidity of the reinforcement itself is reduced. Further, at the time of welding, since a special L-shaped spot gun is used in addition to the opposed spot gun, there is a problem that workability is reduced.

The present invention has been made in view of this point, and aims to increase the joint rigidity of the back panel and the quarter pillar in a closed cross-section structure without performing special long hole drilling or welding. Aim.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, the left and right edges in the vehicle width direction of a back panel constituting a driver's cab are connected to a flange of a quarter pillar and are located in the driver's cab. In a vehicle body structure in which a rigid reinforcement having a hat-shaped cross section extending in the vehicle width direction is coupled to a lower side portion of a window of the back panel, both ends of the lower side portion of the window in the vehicle width direction and an inner side opening edge of a quarter outer panel are formed. The overlapped portion is formed between the vehicle width direction end of the cylindrical reinforce and the opening edge of the quarter inner panel formed to be fitted to the vehicle width direction end separated from the lower side of the window. The present invention proposes a joint structure of a quarter panel and a back panel of a vehicle that is joined through an adhesive.

[0010]

According to the structure of the present invention, the back panel reinforced by the rigid reinforcement is further reinforced by the quarter inner panel adhered to the end of the reinforcement in the vehicle width direction. The stiffness of the cabin is strengthened, and the muffled sound in the cab can be effectively prevented.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 show a vehicle body structure of a joint portion between a back panel and a quarter pillar according to the present invention.
That is, reference numeral 13 denotes a quarter pillar, and as described above, the quarter pillar 13 is configured by joining the quarter inner panel 14 and the quarter outer panel 15 into a closed cross-sectional structure. Reference numeral 10 denotes a back panel whose edge 10a in the vehicle width direction is spot-welded to the flange 13a of the quarter pillar 13.
The lower part 11 of the window is bent at a part thereof, and a reinforcement 12 having a hat-shaped cross section extending in the vehicle width direction is spot-welded to the surface of the cab at the lower part 11 of the window. An opening edge 14a that is longer toward the inside of the vehicle than an opening edge 15a of the quarter outer panel 15 is integrally formed with a portion of the quarter inner panel 14 corresponding to the rain force 12. The opening edge 15a is placed on both ends 11a of the window lower side 11 in the vehicle width direction in the overlapping state. The opening edge 14a of the quarter inner panel 14 is separated from the both ends 11a of the window lower side 11 in the vehicle width direction and is overlapped with the left and right ends 12a in the vehicle width direction of the reinforce 12 in a tubular state. Will be.

In the above structure, the joining flange 16 is provided at one or both of the end 12a of the reinforcement 12 and the opening edge 14a of the quarter inner panel 14.
The adhesive 17 is applied in advance to a range extending to And
The back panel 10 is attached to the quarter pillar 13 with an adhesive 17 by bonding the end 12a of the reinforcement 12 and the opening edge 14a of the quarter inner panel 14 by an adhesive. Thereafter, in this state, in the automatic welding assembly line, the left and right edges 10a of the back panel 10, the lower side 11 of the back panel, and the flange 16 of the reinforcement 12 are spot-welded to the flange 13a of the quarter pillar 13 as in the prior art. They are joined together. Thus, by this welding, the reinforcement 12 and the quarter inner panel 14 are integrally bonded and firmly bonded by the adhesive 17, thereby increasing the bonding rigidity between them. At the same time, the vibration of the entire back panel 10 is suppressed, and in particular, the primary natural frequency of the back panel 10 increases, and no muffled sound is generated.

The vibration of the back panel may be caused by the resonance with the header panel of the luggage room facing the back panel. By adjusting the adhesive, the wrap margin, and the like, the resonance with the header panel is reduced. Can be prevented. Further, the adhesive can also be used at the overlapping portion between the end of the lower side of the window of the back panel and the opening edge of the quarter outer panel.

[0015]

[Effects of the Invention] As described above, according to the present invention,
In a structure such as a truck or the like, where the lower side of the window of the back panel of the driver's cab and the reinforcement are connected to the quarter outer panel and the quarter inner panel of the quarter pillar, the reinforcement is integrally bonded to the quarter inner panel with an adhesive. Therefore, the connection rigidity can be increased by a simple operation, and muffled noise can be reduced. It is not necessary to change the shape of the body for the specification of the presence or absence of the adhesive. Since the adhesive is used, the appearance can be improved, and a special long hole is not required in the vertical direction, and the rigidity is not reduced. Furthermore, we adjust adhesive, lap allowance,
The resonance point can be changed or prevented.

[Brief description of the drawings]

FIG. 1 is a horizontal cross-sectional view of a main part showing an embodiment of a coupling structure of a vehicle back panel and a quarter pillar according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a back panel from the inside of a driver's cab.

FIG. 4 is a perspective view schematically showing a cab frame structure.

FIG. 5 is a sectional view showing a conventional coupling structure.

[Explanation of symbols]

 Reference Signs List 10 back panel 11 window lower side 12 reinforcement 12a end 13 quarter pillar 14 quarter inner panel 14a opening edge 15 quarter outer panel 17 adhesive

Claims (1)

(57) [Scope of request for utility model registration] 1. A rigid reinforcement having a hat-shaped cross-section, which is located in the driver's cab and extends in the vehicle width direction, while connecting left and right edges of a back panel constituting a driver's cab to a flange of a quarter pillar. In the vehicle body structure coupled to the lower side of the window of the back panel, both ends in the vehicle width direction of the lower side of the window and the inner side opening edge of the quarter outer panel are overlapped, and the cylindrical shape is separated from the lower side of the window. A back of a vehicle, wherein an end of the reinforcement in a vehicle width direction and an opening edge of a quarter inner panel formed in a fitting state with respect to the vehicle width direction end are connected via an adhesive. Panel and quarter pillar coupling structure.