Patent ID: 12221164

DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

The specific structural or functional descriptions of the embodiments disclosed in the present specification or application are merely exemplified for the purpose of describing the embodiments according to the present invention. The embodiments of the present invention may be implemented in various forms, and the present invention is not to be interpreted as being limited to the embodiments described in the present specification or application.

The embodiment according to the present invention may be subject to various modifications and have various forms so that specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. It is to be understood that this is not intended to limit the embodiments according to the concept of the present invention to the specific disclosed forms and that all modifications, equivalents, and substitutes within the spirit and technical scope of the present invention are included.

Terms such as first, second, etc. may be used to describe various components, but the components are not to be limited by the terms. The terms may only be used for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be denoted as a second component, and similarly, a second component may also be denoted as a first component.

When a component is referred to as being “connected” or “coupled” to another component, the component may be directly connected or coupled to the another component, but it is to be understood that other components may exist in between. On the other hand, when a component is referred to as being “directly connected” or “directly coupled” to another component, it is to be understood that there are no intervening components present. Other expressions describing a relationship between components, that is, “between”, “just between”, “neighboring”, and “directly neighboring” are to be interpreted in the same manner.

The terms used herein are used for the purpose of describing specific embodiments only and are not intended to limit the invention. Singular expressions include plural expressions unless the context explicitly indicates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate the presence of implemented features, numbers, steps, operations, components, parts, or combinations thereof described in the specification and are not to be understood to preclude the presence or additional possibilities of one or more of other features, numbers, steps, operations, components, parts or combinations thereof in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meanings as are generally understood by those skilled in the art to which the present invention pertains. The terms such as those defined in commonly used dictionaries are to be interpreted as having meanings consistent with their meanings in the context of the related technology and are not to be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Hereinafter, the present invention will be described in detail by describing the preferred embodiments of the present invention with reference to the accompanying drawings. The same reference numerals presented in each drawing refer to the same members.

FIGS.1to6show that, according to an embodiment of the present invention, a vehicle body structure includes a dash cross member3disposed on an upper surface of a dash floor1in the lateral direction of the vehicle, a lower side member7coupled to a lower surface of the dash floor1to face the dash cross member3and coupled to a side wall of a side sill5, and a body mounting bracket11provided under the lower side member7and coupled to the frame9.

That is, according to this embodiment invention, the dash cross member3and the lower side member7are respectively coupled to the upper and lower surfaces of the dash floor1, a front-end portion of the lower side member7facing the dash cross member3across the dash floor1, and a rear of the lower side member7is coupled to the side sill5so that a structure configured to solidly support the body mounting bracket11is formed.

It is to be noted that a high voltage battery B is mounted in the frame9inFIG.2.

A mounting bolt13protruding downward to be inserted into the frame9is fixed to the body mounting bracket11and the lower side member7.

Accordingly, when the frame9and the vehicle body are coupled to each other, the mounting bolt13is inserted into a mounting hole formed in the frame9to facilitate the exact and solid assembly.

An upper surface of the dash floor above the body mounting bracket11and the lower side member7may be provided with a dash lower cross extension15extending in the lateral direction of the vehicle body.

That is, the dash floor1and the dash lower cross extension15sequentially overlap above the lower side member7, and the body mounting bracket11is coupled to the lower side of the lower side member7.

An inboard end portion of the dash lower cross extension15is coupled to a dash lower side member17disposed away from the center to a side of the vehicle body to extend in the front/rear direction of a vehicle body, and an outboard end portion of the dash lower cross extension15is coupled to an A-pillar19.

Accordingly, the body mounting bracket11is mounted based on the robust support structure provided by the dash lower cross extension15and the lower side member7described above so that more a robust support structure may be ensured.

The dash lower side member17extends along the curve of the dash floor1in the front/rear direction, a front of the dash lower side member17is coupled to the dash cross member3, and a dash upper side member23extending rearward from a rear of a front side member21toward the dash lower side member17to be coupled to the dash cross member3ois provided in front of the dash cross member3to which the dash lower side member17is coupled so as to transfer force to be transferred from the rear of the front side member21to the dash lower side member17.

Accordingly, in the event of a collision, the impact force transferred rearward from the front side member21is transferred in dispersion to and borne by the dash upper side member23, the dash cross member3, and the dash lower side member17so that sufficient front collision performance of the vehicle may be ensured.

Here, the lower side member7extends outward to the rear of the vehicle body to be coupled to a side wall of the side sill5while the front-end portion faces the lower side of a portion where the dash cross member3, the dash upper side member23, and the dash lower side member17meet such that the impact force transferred from the front side member21may be dispersed and borne so that the front collision performance of the vehicle may be further improved.

In particular, the lower side member7forms, together with the dash lower cross extension15and the dash lower side member17, a triangle, a vertex of which is connected to the side sill5, so that the structural stability for solidly bearing the load transferred from the front side member21to dash cross member3through the dash upper side member23is ensured.

In addition, either end of the dash cross member3is coupled to the A-pillar19on either side of the vehicle body so that solid rigidity of the vehicle body may be ensured.

In addition, the rear of the dash floor1is connected to a body floor25, the lower surface of the body floor25is provided with a center cross member27connecting the side sills5on either side of the vehicle body in the rear of the lower side member7, and a rear-end portion of the dash lower side member17is coupled to the upper surface of the body floor25to face the center cross member27.

Accordingly, the impact force transferred rearward from the front side member21passes through the dash upper side member23, the dash cross member3, and the dash lower side member17to be also borne by the center cross member27so that the front collision performance of the vehicle may be improved.

It is to be noted that the body floor25may integrally extend rearward from the dash floor1or may be separately provided.

On the other hand, the side sill5is provided with a reinforcing member29extending in the length direction of the vehicle body, a connecting bracket31connecting a side wall of the side sill5and the reinforcing member29may be provided on the reinforcing member29, and the body mounting bracket11is coupled to the side wall of the side sill5to face the connecting bracket31.

Accordingly, the bearing structure of the body mounting bracket11is further solidified, and the impact force transferred rearward through the lower side member7may be dispersed through the side sill5and the reinforcing member29.

The present invention as described above may be differently described in the following manner.

That is, according to an embodiment of the present invention, a vehicle body includes a dash cross member3extending in the lateral direction of the vehicle body to be coupled to an upper surface of a dash floor1and connect A-pillars19on either side of the vehicle, dash upper side members23and dash lower side members17that are respectively spaced apart from each other on either side across the center of the vehicle body to extend along the curve of the dash floor1in the front/rear direction on the upper surface of the dash floor1and that are coupled to the dash cross member3, and a lower side member7having a front portion coupled to a portion of the dash floor1across from the portion where the dash cross member3, the dash upper side member23, and the dash lower side member17meet and a rear-end portion coupled to a side wall of a side sill5.

A front side member21may be provided in front of the dash upper side member23such that the force acting rearward through the front side member21may be transferred to the dash lower side member17through the dash upper side member23.

A body mounting bracket11coupled to the frame9may be provided between the lower side of the lower side member7and the side wall of the side sill5.

The side sill5may be provided with a reinforcing member29extending in the front/rear direction of the vehicle body, a connecting bracket31may be provided between the upper side of the reinforcing member29and the side wall of the side sill5, and the body mounting bracket11may be coupled to the side wall of the side sill5to face the connecting bracket31.

An upper surface of the dash floor1above the body mounting bracket11and the lower side member7may be provided with a dash lower cross extension15connecting the A-pillar19and the dash lower side member17in the lateral direction of the vehicle body.

The dash lower cross extension15, the dash lower side member17, and the lower side member7form a triangle with each other.

A center cross member27extending in the lateral direction of the vehicle body to connect the side sills5on either side is coupled to a lower surface of a body floor25extending rearward from the dash floor1in the rear of the lower side member7, and a rear-end portion of the dash lower side member17is coupled to an upper surface of the body floor25to face the center cross member27.

Specific embodiments of the present invention are illustrated and described, but it will be obvious to those skilled in the art that the present invention may be improved upon and modified in various manners without deviating from the technical spirit of the present invention provided in the following claims.