High-strength front floor lower longitudinal beam for automobile

Abstract

The utility model provides a high-strength front floor lower longitudinal beam for an automobile, which comprises a longitudinal beam main body, and the longitudinal beam main body comprises a front end part, a pressure absorption part and a rear end part; when the longitudinal beam main body is subjected to head-on collision, due to the arrangement of the first reinforcing connector, the second reinforcing connector, the third reinforcing connector and the fourth reinforcing connector, impact force can be transmitted to a designated position, namely the pressure absorption part, the pressure absorption part is deformed and collapsed, impact force generated by collision is buffered, and the impact force is reduced. Therefore, the stability of the front end part and the rear end part is ensured, pressure transmission is reduced, and overall damage is avoided; in this way, only the pressure absorption part needs to be disassembled, assembled and replaced independently in the later period, and more convenience, safety and reliability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, especially relates to a high-strength front floor under longitudinal beam for automobile. BACKGROUND

[0002] The front floor under longitudinal beam of the automobile is a longitudinal beam structure located below the front floor of the automobile, which extends along the longitudinal direction of the vehicle and cooperates with the cross beam and other structural elements to form a strong framework of the automobile body.

[0003] However, the existing high-strength front floor under longitudinal beam for automobile, once a large deformation occurs after the front floor under longitudinal beam is subjected to a collision, cannot be repaired, needs to be cut and replaced, or the whole needs to be replaced, the overall structure changes due to cutting, and safety hazards are prone to exist, and the whole replacement is prone to unnecessary waste.

[0004] Therefore, it is very necessary to invent a high-strength front floor under longitudinal beam for automobile. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of high-strength front floor under longitudinal beam for automobile, which uses the technical scheme that a kind of high-strength front floor under longitudinal beam for automobile, including longitudinal beam main body, wherein: the longitudinal beam main body includes front end portion, pressure absorption portion and rear end portion;

[0006] One end of the front end portion is provided with an integrated reinforcing connector one;

[0007] Two ends of the pressure absorption portion are respectively provided with integrated reinforcing connector two and reinforcing connector three;

[0008] Two ends of the rear end portion are respectively provided with integrated reinforcing connector four and reinforcing connector five;

[0009] The front end portion is fixedly connected with the reinforcing connector two on the pressure absorption portion through the reinforcing connector one, and the pressure absorption portion is fixedly connected with the reinforcing connector four on the rear end portion through the reinforcing connector three.

[0010] Corresponding upper reinforcing ribs are arranged above the surfaces of the front end portion, the pressure absorption portion and the rear end portion.

[0011] Corresponding lower reinforcing ribs are arranged below the surfaces of the front end portion, the pressure absorption portion and the rear end portion.

[0012] One end of the pressure absorption portion is fixedly installed with an energy absorption box one, one half of the energy absorption box one is inside the pressure absorption portion, the other half of the energy absorption box one is outside the pressure absorption portion, and a part of the energy absorption box one outside the pressure absorption portion is inserted into the inside of one end of the front end portion.

[0013] One end of the pressure absorption part is fixedly provided with an energy absorption box two, one half of the energy absorption box two is inside the pressure absorption part, the other half of the energy absorption box two is outside the pressure absorption part, and the part of the energy absorption box two outside the pressure absorption part is inserted into the inside of one end of the rear end part.

[0014] The front end part, the pressure absorption part and the rear end part are respectively provided with corresponding lightening holes and assembly holes.

[0015] Compared with the prior art, the advantages of the present application are that:

[0016] When the longitudinal beam body is subjected to a head-on collision, the impact force is first transmitted to the designated position, that is, the pressure absorption part, due to the arrangement of the first, second, third and fourth reinforcing connectors, so that the pressure absorption part deforms and collapses, buffers the impact force generated by the collision, and thus ensures the stability of the front end part and the rear end part, reduces the transmission of pressure, and avoids overall damage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a schematic diagram of the overall structure of the present application.

[0018] Fig. 2 is a schematic diagram of the explosion structure of the present application.

[0019] Fig. 3 is a schematic diagram of the full section structure of the present application.

[0020] The front end part 1, the pressure absorption part 2, the rear end part 3, the first reinforcing connector 4, the second reinforcing connector 5, the third reinforcing connector 6, the fourth reinforcing connector 7, the fifth reinforcing connector 8, the upper reinforcing rib 9, the lower reinforcing rib 10, the energy absorption box one 11, and the energy absorption box two 12. DETAILED DESCRIPTION

[0021] In order to enable the personnel in the technical field to better understand the present application scheme, the technical scheme in the present application embodiment will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0022] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] The utility model is further described below in combination with the drawings:

[0024] Embodiments

[0025] Reference Figs. 1-3 A high-strength front floor lower longitudinal beam for an automobile, comprising a longitudinal beam body, wherein: the longitudinal beam body comprises a front end portion 1, a pressure absorption portion 2 and a rear end portion 3, facilitating separate disassembly and replacement of the front end portion 1, the pressure absorption portion 2 and the rear end portion 3, thereby reducing unnecessary waste;

[0026] In this embodiment, one end of the front end portion 1 is provided with an integrated reinforcing connector one 4, so as to ensure the strength of the connection between the front end portion 1 and the pressure absorption portion 2 through the reinforcing connector one 4;

[0027] In this embodiment, the two ends of the pressure absorption portion 2 are respectively provided with an integrated reinforcing connector two 5 and an integrated reinforcing connector three 6, so as to ensure the strength of the connection between the pressure absorption portion 2 and the front end portion 1 and the rear end portion 3 through the reinforcing connector two 5 and the reinforcing connector three 6;

[0028] In this embodiment, the two ends of the rear end portion 3 are respectively provided with an integrated reinforcing connector four 7 and an integrated reinforcing connector five 8, so as to ensure the strength of the connection between the rear end portion 3 and the pressure absorption portion 2 through the reinforcing connector five 8;

[0029] In the embodiment, the front end part 1 is fixedly connected with the reinforcing connector two 5 on the pressure absorption part 2 through the reinforcing connector one 4, such as welding, riveting, bolt connection and the like, so as to ensure the stability and strength of the connection between the front end part 1 and the pressure absorption part 2 through the reinforcing connector one 4 and the reinforcing connector two 5, and reduce the deformation degree of the connection when being impacted. The pressure absorption part 2 is fixedly connected with the reinforcing connector four 7 on the rear end part 3 through the reinforcing connector three 6, such as welding, riveting, bolt connection and the like, so as to ensure the stability and strength of the connection between the pressure absorption part 2 and the rear end part 3 through the reinforcing connector three 6 and the reinforcing connector four 7, and reduce the deformation degree of the connection when being impacted.

[0030] In the embodiment, the upper side of the surface of the front end part 1, the pressure absorption part 2 and the rear end part 3 is respectively provided with the corresponding upper reinforcing rib 9, and the lower side of the surface of the front end part 1, the pressure absorption part 2 and the rear end part 3 is respectively provided with the corresponding lower reinforcing rib 10, so as to improve the carrying capacity of the front end part 1, the pressure absorption part 2 and the rear end part 3 through the upper reinforcing rib 9 and the lower reinforcing rib 10.

[0031] In the embodiment, the energy absorption box one 11 is fixedly installed at one end of the pressure absorption part 2, one half of the energy absorption box one 11 is inside the pressure absorption part 2, the other half of the energy absorption box one 11 is outside the pressure absorption part 2, and a part of the energy absorption box one 11 outside the pressure absorption part 2 is inserted into the inside of one end of the front end part 1. The energy absorption box two 12 is fixedly installed at one end of the pressure absorption part 2, one half of the energy absorption box two 12 is inside the pressure absorption part 2, the other half of the energy absorption box two 12 is outside the pressure absorption part 2, and a part of the energy absorption box two 12 outside the pressure absorption part 2 is inserted into the inside of one end of the rear end part 3. Through the setting of the energy absorption box one 11 and the energy absorption box two 12, the stability and strength of the connection between the pressure absorption part 2 and the front end part 1 and the rear end part 3 can be ensured, and at the same time, the deformation capacity of the pressure absorption part 2 can be improved when the pressure absorption part 2 is deformed and collapsed under pressure, and the pressure absorption part 2 can assist in absorbing the impact force, so that the impact force can be better buffered.

[0032] In the embodiment, the surface of the front end part 1, the pressure absorption part 2 and the rear end part 3 is respectively provided with the corresponding lightening hole and assembly hole, so as to reduce the overall weight through the lightening hole.

[0033] Specifically, when the longitudinal beam body is subjected to a head-on impact, the pressure is transmitted to the pressure absorption portion 2 through the front end portion 1, so that the pressure absorption portion 2 is deformed first to buffer the impact force until the energy absorption box one 11 and the energy absorption box two 12 are completely compressed, when the pressure absorption portion 2, the energy absorption box one 11 and the energy absorption box two 12 are completely compressed, the compressed pressure absorption portion 2, the energy absorption box one 11 and the energy absorption box two 12 and the reinforcing connector one 4, the reinforcing connector two 5, the reinforcing connector three 6 and the reinforcing connector four 7 will hinder the impact force to continue to transmit, and the connection between the pressure absorption portion 2 and the front end portion 1 and the rear end portion 3 is deformed to the maximum extent, so as to replace the pressure absorption portion 2 alone in the later stage, unless the impact force is far greater than the resistance of the longitudinal beam body;

[0034] When the pressure absorption portion 2 needs to be replaced, only the connection point between the pressure absorption portion 2 and the front end portion 1 and the rear end portion 3 needs to be destroyed.

[0035] The technical scheme of the utility model, or the technical scheme of the utility model inspired by the person skilled in the art, designs similar technical scheme, and achieves the above technical effect, which falls within the protection scope of the utility model.

Claims

1. A high-strength underfloor side member for an automobile, characterized by: The utility model provides a kind of longitudinal beam, including longitudinal beam body, wherein: the longitudinal beam body includes front end portion (1), pressure absorption portion (2) and rear end portion (3); One end of the front end portion (1) is provided with an integral reinforcing connector one (4); Two ends of the pressure absorption portion (2) are respectively provided with an integral reinforcing connector two (5) and reinforcing connector three (6); Two ends of the rear end portion (3) are respectively provided with an integral reinforcing connector four (7) and reinforcing connector five (8); The front end portion (1) is fixedly connected with the reinforcing connector two (5) on the pressure absorption portion (2) through the reinforcing connector one (4), and the pressure absorption portion (2) is fixedly connected with the reinforcing connector four (7) on the rear end portion (3) through the reinforcing connector three (6).

2. The high-strength underfloor side member for a vehicle according to claim 1, characterized by: The upper surface of the front end portion (1), the pressure absorption portion (2) and the rear end portion (3) is respectively provided with a corresponding upper reinforcing rib (9).

3. The high-strength underfloor side member for a vehicle according to claim 2, characterized by: The lower surface of the front end portion (1), the pressure absorption portion (2) and the rear end portion (3) is respectively provided with a corresponding lower reinforcing rib (10).

4. The high-strength underfloor side member for a vehicle according to claim 3, characterized by: One end of the pressure absorption portion (2) is fixedly installed with an energy absorption box one (11), one half of the energy absorption box one (11) is inside the pressure absorption portion (2), the other half of the energy absorption box one (11) is outside the pressure absorption portion (2), and a part of the energy absorption box one (11) outside the pressure absorption portion (2) is inserted into the inside of one end of the front end portion (1).

5. The high-strength underfloor side member for a vehicle according to claim 4, characterized by: One end of the pressure absorption portion (2) is fixedly installed with an energy absorption box two (12), one half of the energy absorption box two (12) is inside the pressure absorption portion (2), the other half of the energy absorption box two (12) is outside the pressure absorption portion (2), and a part of the energy absorption box two (12) outside the pressure absorption portion (2) is inserted into the inside of one end of the rear end portion (3).

6. The high-strength underfloor side member for a vehicle according to claim 1, characterized by: The surface of the front end portion (1), the pressure absorption portion (2) and the rear end portion (3) is respectively provided with a corresponding weight-reducing hole and assembly hole.

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