KR20170111604A - Sub frame reinforcing unit for vehicle - Google Patents

Abstract

A vehicle subframe reinforcement unit is disclosed. In a subframe for a vehicle according to an embodiment of the present invention, a front end of the vehicle body panel is mounted on a side member, a rear point of the vehicle body panel is connected to a lower arm, and a point G and a mounting point are formed. A dash lower member disposed on an inner side in the width direction of the vehicle body panel with the side member interposed therebetween and a side seal member provided on an outer side in the width direction of the vehicle body panel, A main body coupled to the mounting point formed at one side of the main body and having a first mounting hole connected to the subframe, and a second and a third mounting hole formed to be fixed to the side member; A first sub body extending integrally from one side of the main body toward the dash lower member, a fourth mounting hole formed corresponding to the dash lower member, and a first sub body mounted on the dash lower member through the fourth mounting hole, ; And a second mounting hole formed on the other side of the main body toward the side seal member and corresponding to the side seal member, Includes body.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sub-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subframe reinforcing unit for a vehicle, and more particularly, to a subframe reinforcing unit for a vehicle which increases connection rigidity between a vehicle body and a subframe.

In general, a suspension of a vehicle is a device that connects an axle and a vehicle body to prevent damage to the vehicle body and cargo, thereby improving ride comfort by controlling vibration, shock, and external force received from the road surface while the vehicle is running.

Particularly, in a McPherson type suspension mainly applied to a small passenger vehicle, a subframe in which the upper plate and the lower plate are welded is applied.

In such a subframe, a steering gear box, a stabilizer bar, and the like are provided on the upper plate in the vehicle width direction, and lower arms are provided on both front and rear ends thereof.

In the prior art, the subframe is mounted to the vehicle body through the mounting bolt. That is, the front side of the subframe is connected to the front side of the vehicle body, and the rear side is connected to the rear side of the vehicle body.

Here, the subframe is mounted to the side member at the bottom of the vehicle body. On both sides of the side member, a side seal member and a dash lower member are disposed.

However, since the conventional subframe as described above is structured so as not to be connected to the side seal member and the dash lower member, the width directional connection of the vehicle body is insufficient between the members disposed in the longitudinal direction of the vehicle body, There is a problem that the rigidity of the vehicle body is deteriorated.

In addition, there is a problem that the vehicle performance is deteriorated due to the deformation of the vehicle body during running of the vehicle due to the decrease in the rigidity of the vehicle body.

Accordingly, there is a need to secure robust connectivity between the members arranged in the width direction along the longitudinal direction of the vehicle.

The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a side member, a side seal member, and a dash lower member disposed in a longitudinal direction at a lower portion of a vehicle body, Frame reinforcing unit for improving the connection rigidity of the sub-frame and ensuring the rigid connection in the width direction of the vehicle body.

In order to achieve the above object, a subframe reinforcing unit for a vehicle according to an embodiment of the present invention includes a subframe in which a front portion is mounted to a side member at a lower portion of a vehicle body panel, a G point connected to a lower arm at a rear portion, A dash lower member disposed rearwardly of the subframe in the width direction of the vehicle body panel with the side member interposed therebetween and a side seal member provided on the outside in the width direction of the vehicle body panel A main body having a first mounting hole coupled to a mounting point formed at a rear side of the subframe and connected to the subframe, and a second and a third mounting hole formed to be fixed to the side member; A first sub body extending integrally from one side of the main body toward the dash lower member, a fourth mounting hole formed corresponding to the dash lower member, and a first sub body mounted on the dash lower member through the fourth mounting hole, ; And a second mounting hole formed on the other side of the main body toward the side seal member and corresponding to the side seal member, Includes body.

Wherein the first sub body includes: a first extending part integrally connected from one end of the fourth mounting hole to the other end corresponding to the first mounting hole; And a second extension portion from which one end of the fourth mounting hole is formed and the other end of the third mounting hole is integrally connected to the main body.

The first extension portion and the second extension portion may be inclined from the main body toward the rear of the vehicle body panel.

The first sub-body may be formed in a triangular shape whose overall shape is connected to the main body through the first extending portion and the second extending portion.

A first space may be formed between the main body and the first and second extension portions.

Wherein the second sub body includes: a third extending part integrally connected from one end of the fifth mounting hole to the other end corresponding to the second mounting hole; And a fourth extending part integrally connected from the one end of the fifth mounting hole to the other end corresponding to the third mounting hole.

The third extension may be disposed obliquely toward the rear of the vehicle body panel from the main body.

The fourth extension may be disposed in a direction perpendicular to the side member and the side seal member.

The second sub-body may be formed in a triangular shape whose overall shape is connected to the main body through the third extending portion and the fourth extending portion.

A second space may be formed between the main body and the third and fourth extension portions.

Side member extension members may be respectively mounted on the front and rear sides of the vehicle body panel between the side members and the side seal members with the second sub body therebetween.

The second mounting hole may be spaced apart from the third mounting hole in the longitudinal direction of the vehicle body panel.

The main body and the first and second sub-bodies may be bolted to the side member, the dash lower member, and the side seal member.

As described above, according to the subframe reinforcement unit for a vehicle according to the embodiment of the present invention, the side member, the dash lower member and the side seal member arranged in the longitudinal direction at the lower portion of the vehicle body are connected to the subframe, There is an effect of improving the rigidity and securing the rigid connection in the width direction of the vehicle body.

Further, by uniformly distributing the lateral load generated during running of the vehicle, it is possible to maximize the rigidity of the vehicle body by suppressing the occurrence of relative displacement of each member and the subframe behavior, and improving Ride & Handling Can be improved.

In addition, it is possible to minimize the cost and weight increase by minimizing the connection point between the subframe and each member.

Furthermore, it is possible to improve the input point rigidity of the mounting point located at the rear of the subframe and the point G connected to the lower arm, thereby ensuring more stable driving performance.

1 is a bottom view of a vehicle body to which a subframe reinforcing unit for a vehicle according to an embodiment of the present invention is applied.
2 is an enlarged view of a portion A in Fig.
Fig. 3 is an explanatory diagram of load distribution when a lateral load is generated in the vehicle sub-frame reinforcement unit according to the embodiment of the present invention. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, It should be understood that various equivalents and modifications may be present.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

And throughout the specification, when an element is referred to as " comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

It should be noted that terms such as " ... unit ", " unit of means ", " part of item ", " absence of member ", and the like denote a unit of a comprehensive constitution having at least one function or operation it means.

FIG. 1 is a bottom view of a vehicle body to which a subframe reinforcing unit for a vehicle according to an embodiment of the present invention is applied, and FIG. 2 is an enlarged view of a portion A of FIG.

Referring to FIG. 1, a subframe reinforcing unit 100 for a vehicle according to an embodiment of the present invention includes a side member 20, a dash and a rear portion of the subframe 10 so as to reinforce connection rigidity of the subframe 10 Member 30, and side seal member 40, respectively.

The subframe 10 is mounted on the side member 20 at a lower portion of the vehicle body panel 3 and at a rear portion thereof with a G point 12 and a mounting point 14 connected to a lower arm (not shown) .

The side members (20) are provided along the longitudinal direction on both sides of the vehicle body panel (3) in the vehicle width direction. The dash lower member 30 is provided along the longitudinal direction from the inside in the width direction of the vehicle body panel 3 with the side member 20 interposed therebetween. In addition, the side seal member 40 is provided along the longitudinal direction from the outside in the width direction of the body panel 3.

That is, the sub-frame reinforcement unit 100 according to the embodiment of the present invention includes the side member 20, the dash lower member 30, and the side seal member 40 at the rear side of the sub frame 10 You can connect.

The sub-frame reinforcement unit 100 includes a main body 110, a first sub-body 120, and a second sub-body 130, as shown in FIG.

The main body 110 is formed with a first mounting hole 112 which is connected to a mounting point 14 formed at a rear side of the subframe 10 by bolting. Second and third mounting holes 114 and 116 are formed in the main body 110 to be fixed to the side member 20 through bolts.

The second mounting hole 114 may be disposed at a position spaced apart from the third mounting hole 116 in the longitudinal direction of the vehicle body panel 3.

That is, the second mounting hole 114 is disposed in front of the main body 110 with respect to the longitudinal direction of the vehicle body panel 3. The third mounting hole 116 is disposed behind the main body 110.

The main body 110 having such a configuration may be formed in an inverted triangle shape in which the overall shape of the main body 110 is reduced from the front to the rear of the body panel 3.

In the present embodiment, the first sub-body 120 extends integrally from one side of the main body 110 toward the dash lower member 30. [ The fourth sub-body 120 is formed with a fourth mounting hole 122 corresponding to the dash lower member 30. The first sub-body 120 is bolted to the dash lower member 30 through the fourth mounting hole 122.

Here, the first sub-body 120 includes a first extension portion 124 and a second extension portion 126.

The other end of the first extending portion 124 corresponding to the first mounting hole 112 is integrally connected to the main body 110 from one end of the fourth mounting hole 122.

The other end of the second extension portion 124 corresponding to the third mounting hole 116 is integrally connected to the main body 110 from one end where the fourth mounting hole 122 is formed.

The first extension part 124 and the second extension part 126 may be inclined from the main body 110 toward the rear of the vehicle body panel 3. [

A first space 128 may be formed between the main body 110 and the first and second extension portions 124 and 126 to reduce the weight of the first sub-body 120.

That is, the first sub-body 120 may be formed in a triangular shape in which the overall shape of the first sub-body 120 is connected to the main body 110 through the first extending portion 124 and the second extending portion 126.

In the present embodiment, the second sub body 130 extends integrally from the other side of the main body 110 toward the side seal member 40. A fifth mounting hole 132 is formed in the second sub body 130 in correspondence with the side seal member 40.

The second sub-body 130 is bolted to the side seal member 40 through the fifth mounting hole 132.

Here, the second sub body 130 includes a third extension part 134 and a fourth extension part 136.

The other end corresponding to the second mounting hole 114 is integrally connected to the main body 110 from one end of the third extending portion 134 where the fifth mounting hole 132 is formed.

Here, the third extension part 134 may be inclined from the main body 110 toward the rear of the vehicle body panel 3.

The other end of the fourth extension 136 corresponding to the third mounting hole 116 is integrally connected to the main body 110 from one end where the fifth mounting hole 132 is formed.

Here, the fourth extension portion 136 may be disposed in a direction perpendicular to the side member 20 and the side seal member 40.

A second space 138 may be formed between the main body 110 and the third and fourth extension portions 134 and 136 to reduce the weight of the second sub body 130.

The second sub-body 130 may have a triangular shape whose overall shape is connected from the main body 110 through the third extending portion 134 and the fourth extending portion 136.

The total weight of the sub-frame reinforcement unit 100 constructed as described above may be reduced through the first and second spaces 128 and 138. [ In addition, the sub-frame reinforcement unit 100 is connected to the sub-frame 10 through the first mounting hole 112. The subframe reinforcement unit 100 is connected to the side member 20, the dash lower member 30, and the first and second support members 100, 200, and 300 through the second, third, fourth, and fifth mounting holes 114, 116, And the side seal member 40, as shown in Fig.

Accordingly, the sub-frame reinforcement unit 100 can firmly connect the sub-frame 10 and the side member 20, the dash lower member 30, and the side seal member 40. [

In addition, the sub-frame reinforcement unit 100 has bolt fastening points through a first, second, third, fourth, and fifth mounting holes 112, 114, 116, 122, The rigidity of the vehicle body panel 3 can be maximized by effectively suppressing the behavior of the subframe 10 by connecting the subframe 10 to each member 20,

On the other hand, a side member extension member (50) is provided between the side member (20) and the side seal member (40) at the front and rear of the vehicle body panel (3) with the second sub body Can be mounted.

The side member extension member 50 can reinforce the lateral rigidity of the vehicle body panel 3, the side member 20, and the side seal member 40.

Hereinafter, the operation of the vehicle sub-frame reinforcement unit 100 according to the embodiment of the present invention will be described in detail.

Fig. 3 is an explanatory diagram of load distribution when a lateral load is generated in the vehicle sub-frame reinforcement unit according to the embodiment of the present invention. Fig.

Referring to FIG. 3, the sub-frame reinforcement unit 100 according to the embodiment of the present invention includes a first sub-body 120 and a second sub- The first, second, third, and fourth extensions (124, 126, 134, 136) are positioned about the side member (20) connected to the main body (110) And is uniformly dispersed in the side seal member 40.

Thus, the sub-frame reinforcement unit 100 uniformly distributes the lateral load so that the relative positions of the side member 20, the dash lower member 30, and the side seal member 40 relative to the lateral load The occurrence of displacement can be minimized.

The sub-frame reinforcement unit 100 connects the sub-frame 10 to each of the members 20, 30 and 40 to thereby connect the sub-frame 110 to the G-point (not shown) of the sub- 12 and the mounting point 14, thereby improving the running performance of the vehicle.

Therefore, when the vehicle subframe reinforcement unit 100 according to the embodiment of the present invention as described above is applied, the side member 20, which is disposed in the longitudinal direction below the vehicle body panel 3, The member 30 and the side seal member 40 are connected to the subframe 10 so that the connection rigidity of the subframe 10 is improved and the connection reliability in the width direction of the vehicle body can be secured.

Further, by evenly distributing the lateral load generated during running of the vehicle, it is possible to maximize the rigidity of the vehicle body by suppressing the occurrence of relative displacement of the members 20, 30, 40 and the behavior of the subframe 10, ) Performance can be improved and the running performance of the vehicle can be improved.

In addition, the connection points of the subframe 10 and the respective members 20, 30, and 40 can be minimized to minimize cost and weight increase.

Furthermore, the G point 12 formed at the rear of the subframe 10 and connected to the lower arm, and the input point rigidity of the mounting point 14 are improved, thereby ensuring more stable running performance.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

3: Body panel 10: Subframe
20: side member 30: dash lower member
40: Side seal member 100: Subframe reinforcing unit
110: main body 112: first mounting hole
114: second mounting hole 116: third mounting hole
120: first sub-body 122: fourth mounting hole
124: first extension part 126: second extension part
128: first space 130: second sub-body
132: fifth mounting hole 134: third extension part
136: fourth extension part 138: second space

Claims (13)

In a subframe in which a front portion is mounted on a side member at a lower portion of a vehicle body panel and a G point and a mounting point are connected to a lower arm at a rear portion of the vehicle body panel, A dash lower member provided on the inner side in the width direction and a side seal member provided on the outer side in the width direction of the vehicle body panel,
A main body having a first mounting hole coupled to a mounting point formed at a rear side of the subframe and connected to the subframe, and a second and a third mounting hole formed to be fixed to the side member;
A first sub body extending integrally from one side of the main body toward the dash lower member, a fourth mounting hole formed corresponding to the dash lower member, and a first sub body mounted on the dash lower member through the fourth mounting hole, ; And
A fifth sub-body mounted on the side member through the fifth mounting hole, and a second sub-body mounted on the side member through the fifth mounting hole, ;
Frame reinforcing unit for a vehicle. The method according to claim 1,
The first sub-
A first extension part integrally connected from the one end of the fourth mounting hole to the other end corresponding to the first mounting hole; And
A second extending part integrally connected from the one end of the fourth mounting hole to the other end corresponding to the third mounting hole;
Frame reinforcing unit for a vehicle. 3. The method of claim 2,
The first extension and the second extension
Wherein the main body is inclined toward the rear of the vehicle body panel from the main body. 3. The method of claim 2,
The first sub-
And the overall shape is formed in a triangular shape connected to the main body through the first extending portion and the second extending portion. 3. The method of claim 2,
And a first space is formed between the main body and the first and second extension portions. The method according to claim 1,
The second sub-
A third extending part integrally connected from the one end of the fifth mounting hole to the other end corresponding to the second mounting hole; And
A fourth extension part integrally connected from the one end of the fifth mounting hole to the other end of the third mounting hole;
Frame reinforcing unit for a vehicle. The method according to claim 6,
The third extension
Wherein the main frame is inclined from the main body toward the rear of the vehicle body panel. The method according to claim 6,
The fourth extension
And the side member and the side seal member are disposed in a direction perpendicular to the side member and the side seal member. The method according to claim 6,
The second sub-
And the overall shape is formed in a triangular shape connected from the main body through the third extending portion and the fourth extending portion. The method according to claim 6,
And a second space is formed between the main body and the third and fourth extension portions. The method according to claim 1,
Between the side member and the side seal member
And a side member extension member is mounted on the front and rear sides of the vehicle body panel, respectively, with the second sub-body interposed therebetween. The method according to claim 1,
The second mounting hole
And the second mounting hole is spaced apart from the third mounting hole in the front-rear direction of the vehicle body panel. The method according to claim 1,
The main body, the first and second sub-bodies
Wherein the side member, the dash lower member, and the side seal member are bolted to the sub frame.

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