KR20060040873A - Bracket structure of body mount in vehicles - Google Patents

Abstract

The present invention provides a bracket structure of a body mount of a vehicle configured by through-fastening a bolt through an upper rubber between an upper bracket mounted on a body and a lower bracket mounted on a frame, and a lower rubber between a lower bracket and a lower plate. The upper bracket includes a horizontal portion and a vertical bending portion bent to the horizontal portion, and the lower bracket includes a body mount coupling surface interposed between the upper rubber and the lower rubber, a frame coupling portion coupled to the frame, and Disclosed is a bracket structure of a body mount of a vehicle, characterized by having an impact transmission plate extending opposite to the frame coupling portion and adjacent to the inner surface of the vertical bent portion of the upper bracket.

Bracket, Body Mount

Description

BRACKET STRUCTURE OF BODY MOUNT IN VEHICLES}

1 is a view showing a fixing structure of the frame and the body by a conventional body mount.

2 is a side view of a Sports Utility Vehicle (SUV).

FIG. 3A is a view illustrating the deformation of the body and the frame after the IIHS new side collision in the SUV of FIG. 2.

3B is a view showing a modified aspect of the body mount in the state of FIG. 3A.

Figure 4a is a perspective view showing the structure of the lower bracket according to the present invention.

Figure 4b is a perspective view showing the structure of the upper bracket according to the present invention.

5 is a view showing a fixing structure of the body and the frame by the body mount employing the bracket structure according to the present invention.

* Explanation of symbols for the main parts of the drawings

20; Lower bracket 22; Body mount mating surface

24; Frame joint 26; Shock transmission plate

28; Bent surface 30; Upper Bracket

32; Horizontal section 34; Vertical bend                 

36; Slit

The present invention relates to a bracket structure of a vehicle body mount, and more particularly, to a bracket structure of a vehicle body mount that can improve the side impact performance of the vehicle.

The body (body) of a typical vehicle is divided into a frame integrated type (monocove body) and a frame detachable type. In the case of a frame detachable type, a body mount is used to fix the body to the frame. The body mount is usually made of a rubber with a low spring constant to prevent vibration from the frame while preserving the body, Figure 1 shows the structure of the frame and the body by such a conventional body mount.

Referring to the drawings, the conventional body mount is to fasten using a bolt (B) to the upper bracket by placing the rubber (3) between the upper bracket (1) mounted on the body and the lower bracket (2) mounted to the frame It has a structure. The upper rubber 3 is provided between the body mounting bracket 1 on the upper side of the lower bracket 2, and the lower rubber 4 is provided between the lower plate 2 and the lower plate on the lower side of the lower bracket 2. . The rubber of the body mount is generally referred to as a bush.

However, such a conventional body mount is effective to block vibrations coming from the frame, but is not effective for transmitting a shock applied to the body to the frame. In other words, the rubber is severely deformed during the vehicle side collision, so that the impact energy applied to the body cannot be quickly transmitted to the frame. Therefore, there is a risk of severe deformation in the body when a collision occurs to the body when the collision point is high during the vehicle side collision.

FIG. 2 is a side view of a typical Sports Utility Vehicle (SUV), and FIGS. 3A and 3B are diagrams illustrating a deformation form of a body, a frame deformation form, and a body mount after IIHS new side collision in an SUV vehicle, respectively.

Looking at the damage of the vehicle body according to the side impact point of the vehicle with reference to Figures 2 to 3b, in the case of SUV vehicles because the ground height is relatively high, when the low ground height passenger cars collide with the side or the existing North American NHSTA, European side collision test In this case, the barrier bumper is hitting the side of the barrier bump at the A side of the vehicle, so that the collision energy is sufficiently absorbed by the frame, so that the deformation of the body is small and the seating position of the passenger is relatively high. It is also advantageous in terms of passenger safety.

However, in the case of an SUV vehicle or pick-up truck hitting the side, or in the IIHS new side crash test that simulates it, the collision energy is not transmitted to the frame quickly because the body hits first to the B side. If not, there is a risk of severe deformation of the body and high passenger injuries.

FIG. 3A is a view showing IIHS new side collision results of a conventional SUV mounted body vehicle. As shown in FIG. 3B, since the rubber is severely deformed, shock energy is transmitted to the frame after the deformation of the vehicle body has occurred. It can be seen that the car body is severely deformed.

In order to solve this problem, a method of reinforcing a vehicle body such as a B-pillar, a seal side, a floor, and the like has been implemented, but this has the disadvantage of increasing the weight and cost of the vehicle.

The present invention has been made to solve the above problems, by changing the bracket structure of the body mount so that when the vehicle body deformation due to the side impact of the vehicle occurs, the collision energy can be quickly transmitted to the frame side with high rigidity by the bracket It is an object of the invention to provide a body mount bracket structure of a vehicle which can improve the side impact performance of the vehicle.

In order to achieve the above object, the present invention provides a vehicle comprising an upper rubber interposed between an upper bracket mounted on a body and a lower bracket mounted on a frame, and through a bolt between a lower bracket and a lower plate. In the bracket structure of the body mount, the upper bracket has a horizontal portion and a vertical bending portion bent to the horizontal portion, the lower bracket is coupled to the frame and the body mount engaging surface interposed between the upper rubber and the lower rubber, And a frame coupling portion which is extended to the opposite side of the frame coupling portion and adjacent to the inner surface of the vertical bent portion of the upper bracket with an adjacent impact transfer plate. .

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

Figure 4a is a perspective view showing the structure of the lower bracket according to the present invention, Figure 4b is a perspective view showing the structure of the upper bracket according to the present invention, Figure 5 is a body by the body mount employing the bracket structure according to the present invention and The fixing structure of the frame is shown (rubber is omitted in FIG. 5).

4A and 5, the lower bracket 20 mounted on the frame of the vehicle is interposed between the upper rubber and the lower rubber of the body mount and has a through hole through which a bolt B of the body mount passes. It has a 22 and the frame coupling part 24 couple | bonded with a frame to one side. On the opposite side of the frame coupling portion 24 is provided with an impact transfer plate 26 formed to be adjacent to the inner surface of the vertical bent portion 34 of the upper bracket 30 with a predetermined gap. When the deformation of the body is started by the side impact of the vehicle, the impact transmission plate 26 is configured to be in close contact with the inner surface of the vertical bent portion of the upper bracket while transferring the collision energy to the rigid frame.

Preferably, the impact transfer plate 26 has a bent surface 28 formed vertically bent upward at its end. The bending surface 28 is bent upward in the extending direction of the vertical bending portion 34 of the upper bracket 30, thereby minimizing the thickness of the plate while ensuring rigidity and delivering impact energy to the frame more quickly during side vehicle collision.

4B and 5, the upper bracket 30 mounted on the body of the vehicle is formed by horizontally bending 32 and vertically bent downward from the horizontal portion to which the bolt is inserted and coupled to the floor of the body. A vertical bending portion 34 coupled to the seal side of the upper surface of the vertical bending portion 34, and the bending surface 28 of the impact transfer plate 26 of the upper bracket 30 is in an unconstrained state. Receiving slits 36 are formed. The bending surface 28 of the impact transmission plate is accommodated in the slit 36 in a non-restrained state, so that a certain degree of freedom is secured in the vertical direction and the front and rear direction of the vehicle so that the vibration characteristics of the body mount are not changed, and the side collision is prevented. In contrast, only the degrees of freedom in the left and right directions are limited. Therefore, the collision energy received by the body in the side impact can be transmitted directly to the frame through the bracket (20, 30) rather than through the rubber.

Looking at the collision energy transfer process when the body and the frame is fixed by the body mount adopting the bracket structure according to the present invention, the door, seal side, non-pillar (B-pillar), etc. while the barrier is invading When the vehicle body starts to deform, collision energy is transmitted to the frame through the bracket between the upper bracket 30 and the lower bracket 20, that is, the contact between the rigid body and the rigid body, before the rubber deformation occurs. Since the frame is a rigid member compared to the body, the collision energy is sufficiently absorbed by the frame to minimize deformation of the body.

Although the present invention described above is limited to one embodiment, the present invention is not limited thereto, and the present invention may be easily modified by those of ordinary skill in the art to which the present invention pertains. It is obvious that it belongs to the technical idea.

 According to the present invention, as the deformation of the vehicle body starts, collision energy is rapidly transmitted to the frame through the bracket, thereby reducing the deformation of the vehicle body and reducing the risk of injury to the passengers. Therefore, the collision performance in IIHS new side collision is also improved.

In addition, according to the present invention, it is possible to reduce the body reinforcement in preparation for side impacts, such as a seal side bulkhead and a non-pillar reinf, which is advantageous in terms of cost and weight. It is possible to improve the side impact performance of the vehicle body only by changing the shape of the existing bracket without changing the structure.

Claims (3)

In the bracket structure of the vehicle body mount of the vehicle which is formed by passing the bolt through the upper rubber between the upper bracket mounted on the body and the lower bracket mounted on the frame and the lower rubber between the lower bracket and the lower plate. The upper bracket includes a horizontal portion and a vertical bending portion bent to the horizontal portion, The lower bracket includes a body mount coupling surface interposed between the upper rubber and the lower rubber, a frame coupling portion coupled to the frame, and a frame extension portion opposite to the frame coupling portion and having a gap with an inner surface of a vertical bent portion of the upper bracket. Bracket structure of the body mount of the vehicle, characterized in that it is provided with an adjacent impact transmission plate in a state. The method of claim 1, The shock transmission plate of the lower bracket is a bracket structure of a body mount of a vehicle, characterized in that it has a bending surface formed by vertical bending upward from the end. The method of claim 2, wherein the upper bracket Bracket structure of the body mount of the vehicle, characterized in that the inner surface of the vertical bending portion is formed with a slit for receiving the bending surface of the impact transfer plate in a non-restrained state.

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