KR20060074737A - Subframe structure of vehicle - Google Patents

Abstract

The present invention relates to a subframe structure of a vehicle. In particular, a cross member that is a lateral frame is deleted from a subframe, and a stabilizer bar is formed into a structure that is integrated with the subframe, thereby securing internal space and design freedom in layout. A subframe structure of a vehicle that can be improved.

The subframe structure of the vehicle according to the present invention eliminates the cross member member and forms a structure integrated with the subframe of the stabilizer bar so that the stabilizer bar replaces the role of the cross member in the lateral direction, thereby allowing design freedom through securing space. It is a structure that can increase the degree, modularization of parts and reduction of weight and manufacturing cost of the vehicle.

Description

Sub-frame structure of an automobile

1 is a perspective view of a subframe equipped with a conventional stabilizer,

2 is a perspective view showing a structure in which a stabilizer bar is integrated in a subframe according to the present invention;

3 is an exploded view of the stabilizer bar bound to FIG. 2;

4 is a configuration diagram of a mounting module mounted to the stabilizer bar of FIG.

5 is a perspective view showing a state of binding in the mounting module of the stabilizer bar according to the present invention;

6 is a cross-sectional view showing a state of binding in the mounting module of the stabilizer bar according to the present invention.

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

  1,3,31: Cross member 5,33: Side member

  7,40: stabilizer 9: body mounting bush

  41: main stabilizer 43: stabilizer arm

  50: stabilizer mounting module 51: stabilizer mounting pipe

  53: inner ring 55: out ring

The present invention relates to a subframe of a vehicle, and in particular, by removing the cross member and forming a structure integrated in the subframe of the stabilizer bar so that the stabilizer bar replaces the role of the cross member in the lateral direction. The present invention relates to a subframe structure of a vehicle in which a stabilizer is integrated which can increase design freedom through securing and reduce weight and manufacturing cost of the vehicle.

1 is a perspective view of a subframe equipped with a conventional stabilizer.

As shown, the structure of the sub-frame 30 in a general vehicle is usually formed in a well (#) shape, the stabilizer bar (7) is mounted on the side member (5) is left, Torsional forces are generated during up, down and reverse movement of the right wheel to prevent the tilting (rolling behavior) of the body.

The subframe 30 is composed of two side members 5 which are longitudinal frames and two cross members 1 and 3 which are transverse frames, and the vehicle body mounted on each side member 5. The mounting frame 9 allows the sub frame module to be mounted on the vehicle body. Side members (5) are equipped with various suspension arms (arms) and cross members (1,3) serves to increase the lateral stiffness because it receives the force in the lateral direction is input through the wheel. That is, the stabilizer bar 7 is a torsional force due to the rotational movement, the cross members (1, 3) are supported on both sides of the side member (5) is responsible for the lateral force respectively.

Examining the two components (1, 3; 7) in terms of kinematics and layout, the components are separately configured, although they occupy similar spaces on the layout and their roles do not overlap. have. This leads to an increase in the weight and cost of the suspension module, and lowers the design freedom in terms of layout.

As shown in FIG. 1, in the situation where the first cross member 1 in front of the two cross members is installed, setting the path of the stabilizer bar 7 is performed by a body, a fuel tank, a muffler, and the like. It can be seen that it is very difficult to make a gap with the surrounding components. That is, there is a problem in that the design freedom in layout is lowered, and the weight increase and the cost increase are caused by the first cross member.

Accordingly, the present invention is to solve the above-mentioned conventional problems, by removing the cross member of the transverse frame in the subframe of the vehicle and forming a stabilizer bar in a structure that is integrated with the subframe, to secure the interior space and layout An object of the present invention is to provide a subframe structure of a vehicle capable of improving design freedom of a vehicle and reducing vehicle weight and manufacturing cost.

The subframe structure of the vehicle of the present invention for achieving the above object is a cross-side frame which is a longitudinal frame on which the suspension arms of the vehicle are mounted, and a cross that is a transverse frame that receives a transverse force input through a wheel to increase lateral rigidity. A subframe module structure of a vehicle including a stabilizer bar mounted to a member and the side member to prevent tilting of the vehicle body, wherein the cross member member as the transverse member is removed, and the subframe and the stabilizer bar are integrated. The stabilizer bar replaces the role of the cross member to secure internal space, modularize components, and reduce weight of the vehicle.

The stabilizer bar formed integrally with the sub-frame is preferably composed of a separate stabilizer bar and a stabilizer bar mounting module for attaching the separate stabilizer bar to the side member of the surf frame.

In addition, the mounting module of the stabilizer bar is inserted into the side member and welded to the side member, the detachable stabilizer bar is configured to be a rotational movement by the mounting module.

Hereinafter, exemplary embodiments of a subframe structure according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing a structure in which the stabilizer bar is integrated in a subframe according to the present invention;

3 is an exploded view of the stabilizer bar bound to FIG. 2;

4 is a configuration diagram of a mounting module mounted to the stabilizer of FIG.

The present invention simultaneously performs the roles of the existing stabilizer bar (7 of FIG. 1) and the first cross member (1 of FIG. 1) through the stabilizer bar 40 and the stabilizer mounting module 50. The stabilizer bar 40 becomes a component of the well frame (#)-shaped subframe 70 to form a structure in which the stabilizer bar 40 is formed integrally with the subframe.                     

That is, in the present invention, by removing the conventional first cross member 1, the overall weight of the subframe 70 can be reduced, and the design freedom can be increased by reducing the cost and securing the space, and with the stabilizer bar 40. Modularity can be achieved through an integral type.

2 and 3, the stabilizer integrated sub-frame 70 of the present invention is largely composed of a separate stabilizer bar 40 and a stabilizer bar mounting module 50. As shown in FIG. The separate stabilizer bar 40 passes through both side members 33 and is the main stabilizer between the two stabilizer arms 43 and the side members 33 on the outer side of the side members 33. It consists of 41.

The detachable stabilizer bar 40 is laterally supported by the side member 33 by the mounting module 50, and is rotated by the thrust bearing device 53 in the mounting module 50. That is, it has a 1 degree of freedom characteristic capable of only rotating motion.

As shown in the figure, the main stabilizer bar 41 is laterally supported by the side member 33 to serve as a conventional first cross member which is a conventional transverse member, and at the same time a stabilizer arm ( By transmitting the torsional force to the stabilizer arm 43 on the opposite side by twisting the rotational movement of 43) also serves as a conventional stabilizer bar.

Therefore, the subframe structure of the present invention can be seen that the cross member, which is a lateral frame, is eliminated as compared with the existing system, thereby sufficiently securing the internal space, thereby greatly increasing the designer's induction on the layout, and greatly reducing the weight and cost.

Referring to FIG. 3, the structure of the separate stabilizer bar 40 according to the present invention is largely provided with both stabilizer arms 43 and left and right stabilizer arms for transmitting the vertical movement of the left and right wheels. 43) and a main stabilizer bar 41 which transmits the torsional force by the relative motion and acts as a cross member. The combination of the stabilizer arm 43 and the main stabilizer arm 41 is mounted by interference fitting by the key 43a and the key groove 41a. The reason for using the key 43a and the key groove 41a is to maintain the initial shape easily and accurately and to increase the bondability.

4 is a configuration diagram of the mounting module 50 mounted to the stabilizer bar 40 of FIG. 3, which allows the stabilizer bar 40 to be laterally constrained to the side member 33 and rotates. It is a block diagram of the stabilizer bar mounting module 50.

The stabilizer mounting module 50 is composed of a stabilizer mounting pipe 51 and a thrust bearing 53. The mounting pipe 51 is inserted into the hole of the side member 33 and fixed to the side member 33 by welding. The thrust bearing 53 is inserted into the welded mounting pipe 51, and the correct insertion amount is determined by the protrusion 51a of the mounting pipe 51 at the time of insertion.

The thrust bearing 53 has an inner ring 53a fixed to the mounting pipe 51 by an interference fit, and the main stabilizer bar 41 and an outer ring 53b fixed by the interference fit are rotated. . The reason why the thrust bearing 53 is used as a device for rotating motion is because it is strong in the force acting in the axial direction.                     

5 is a perspective view showing a state of binding in the mounting module portion of the stabilizer bar 40 according to the present invention,

6 is a cross-sectional view showing a state in which the mounting module portion of the stabilizer bar 40 according to the present invention.

In the above, the side member (33 in FIG. 2) is joined to the mounting pipe 51 by welding.

As described above, the thrust bearing 53 is inserted and coupled by an interference fit until it comes into contact with the mounting pipe 51 protrusion 51a, and the inner ring 53a coupled to the mounting pipe protrusion 51a. And an outer ring 53b having a smaller outer diameter than the inner ring, and a ball or roller 53c mounted between the inner ring and the outer ring.

The inner ring is fixed by the mounting pipe 51 and the interference fitting, and the outer ring 53b is rotated. After that, the main stabilizer 41 is mounted, and the main stabilizer bar 41 is fitted into the hole of the thrust bearing 53 to the protrusion of the out ring 53b and fixed to the out ring 53b.

Finally, the stabilizer arm 43 passes through the inner ring 53a and is coupled to and fixed to the main stabilizer bar 41 by the key 43a and the key groove 41a. In order for the stabilizer arm 43 to pass through the inner ring, the outer diameter of the hole of the inner ring 53a must be larger than the outer diameter of the stabilizer arm 3.

As described above, the twist of the stabilizer arm is transmitted to the opposite stabilizer arm through the main stabilizer arm to sufficiently perform the role of the existing stabilizer bar, and the main stabilizer is mounted. By supporting the side member and both sides by the module, the main stabilizer receives the force input in the lateral direction and increases the lateral stiffness to simultaneously perform the role of the existing cross member.

As described above, in the stabilizer-integrated subframe according to the present invention, by removing the cross member member that is a transverse member and integrating the subframe and the stabilizer bar, the degree of freedom of design can be increased by securing space. The modularity of the parts is also increased, and the stabilizer bar replaces the role of the cross member in the lateral direction, thereby lowering the weight and manufacturing cost of the vehicle.

Claims (9)

It is mounted on the side member, which is a longitudinal frame in which the suspension arms of the vehicle are mounted, and the cross member, which is a frame in which the lateral rigidity is increased by the lateral stiffness input through the wheel, and the side member, to prevent the body from tilting. In a subframe module structure of a vehicle including a stabilizer bar, The cross member member, which is the transverse member, is removed, and the subframe and the stabilizer bar are integrated so that the stabilizer bar replaces the role of the cross member to secure internal space, modularize parts, and reduce the weight of the vehicle. Subframe structure of the vehicle, characterized in that. The method of claim 1, The stabilizer bar integrally formed with the subframe includes a separate stabilizer bar and a stabilizer bar mounting module for attaching the detachable stabilizer bar to a side member of a surf frame. rescue. The method of claim 1, The stabilizer bar mounting module is inserted into the side member and welded to the side member, wherein the removable stabilizer bar is configured to perform a rotational movement by the mounting module. The method of claim 3, wherein The separate stabilizer bar is composed of a stabilizer arm on both sides and a main stabilizer fastened to the center of the stabilizer arm, and the binding of the two components is to be made in the form of an interference fit by the key and the key groove. A subframe structure of a vehicle. The method of claim 3, wherein The mounting module includes a mounting pipe and a thrust bearing, and the thrust bearing includes an outer mounting pipe protrusion, an inner ring and an outer ring inserted into the mounting pipe protrusion, and an inner ball or roller. Subframe structure. The method of claim 5, The inner ring of the thrust bearing is inserted into the mounting pipe by an interference fit, and the insertion frame is formed so that the insertion amount is adjusted by the protrusion of the mounting pipe. The method of claim 5, The inner ring of the thrust bearing is fixed to a mounting pipe, and the outer ring has a smaller outer diameter than the inner diameter of the mounting pipe, and the sub ring of the vehicle is formed to be rotated by a ball or a roller of the inner bearing. Frame structure. The method of claim 5, The main stabilizer is forcibly fitted to the out ring, and the insertion amount thereof is configured to be aligned by the protrusion of the out ring. The method of claim 5, The stabilizer arm is a sub-frame structure of a vehicle, characterized in that the one end is configured to be fixed by the combination of the main stabilizer bar and the key and key groove through the inner ring.

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