Rear floor longitudinal beam

Abstract

The utility model discloses a rear floor longitudinal beam, which belongs to the technical field of automobile parts and comprises a rear floor body, and a reinforcing component used for reinforcing the rear floor body is arranged at one end of the inner wall of the rear floor body. The other end of the inner wall of the rear floor body is provided with an energy absorption assembly used for absorbing energy generated when the rear floor body is impacted. The energy absorption assembly comprises an energy absorption box arranged at one end of the inner wall of the rear floor body, fixing blocks are arranged at the two ends of the energy absorption box, a fixing mechanism is arranged between one end of each fixing block and the inner wall of one side of the rear floor body, and the fixing blocks are connected to the inner wall of one side of the rear floor body through the fixing mechanisms. According to the utility model, the energy-absorbing box, the fixing block and the fixing mechanism are matched for use, so that the energy-absorbing box can absorb energy through controllable deformation during collision, the impact force transmitted to a passenger compartment is reduced, and the protection on people in a vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, concretely to a rear floor longitudinal beam. BACKGROUND

[0002] Compared with the MDB barrier, the barrier of AE-MDB side impact increases the trolley mass by 450kg, the whole impact position is lifted by 50mm, and the impact center is moved back by 250mm. For most vehicle models, the threshold beam height is relatively low, and the barrier does not overlap with the threshold beam. In this case, the structure of the rear threshold beam and the front end of the rear floor longitudinal beam of the existing design is relatively weak. In the AE-MDB side impact, the upper part of the rear threshold beam is subjected to force, and the cavity surrounded by the rear floor and the rear floor longitudinal beam is subjected to torque, resulting in torsional deformation. The torsional resistance of the "mouth" type section formed by them is poor, and the threshold beam is severely turned inward, and the door intrusion exceeds the standard.

[0003] Chinese patent with publication number CN115009378A discloses a rear floor longitudinal beam; comprising an aluminum base and a stamping bridge, wherein the stamping bridge is fixed on the aluminum base, a longitudinal beam closure is fixed on the top of the stamping bridge, and the aluminum base and the stamping bridge are fixed together to form a rear floor longitudinal beam with the same shape and structure as a conventional rear floor longitudinal beam.

[0004] The rear floor longitudinal beam disclosed in the above patent still has some obvious deficiencies in actual use. The rear floor longitudinal beam lacks a structure for absorbing impact energy, resulting in impact on the vehicle after a collision, affecting the safety of the vehicle body longitudinal beam and the passengers inside the vehicle, and a rear floor longitudinal beam needs to be proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a rear floor longitudinal beam, which can have the advantage of absorbing impact energy, to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rear floor longitudinal beam, comprising a rear floor body, one end of the inner wall of the rear floor body is provided with a reinforcing assembly for reinforcing the rear floor body, the other end of the inner wall of the rear floor body is provided with an energy absorption assembly for absorbing energy generated by the impact on the rear floor body;

[0007] The energy absorption assembly comprises an energy absorption box arranged at one end of the inner wall of the rear floor body, and the energy absorption box is provided with a fixing block at both ends, and a fixing mechanism is arranged between one end of the fixing block and the inner wall of one side of the rear floor body, and the fixing block is connected to the inner wall of one side of the rear floor body through the fixing mechanism.

[0008] Preferably, the fixing mechanism comprises a fixing hole formed on one side of the fixing block and a fixing rod arranged on one side of the rear floor body, one end of the fixing rod penetrates through the rear floor body and extends to one side of the rear floor body and is screwed into the inner cavity of the fixing hole.

[0009] Preferably, the fixing mechanism further comprises a first through hole penetrating through and formed on one side of the rear floor body, the first through hole is arranged in correspondence with the fixing rod, and one end of the fixing rod is inserted into the inner cavity of the first through hole.

[0010] Preferably, the reinforcing assembly comprises a reinforcing beam arranged at one end of the inner wall of the rear floor body, a positioning mechanism for positioning the reinforcing beam is arranged between the bottom of the reinforcing beam and the inner wall of the rear floor body, and a mounting mechanism for mounting the reinforcing beam is arranged between the two ends of the reinforcing beam and the two sides of the rear floor body.

[0011] Preferably, the positioning mechanism comprises a positioning rod fixedly mounted on the inner wall of the rear floor body, and a positioning hole penetrating through and formed on the top of the reinforcing beam, the positioning hole is arranged in correspondence with the positioning rod, and the upper end of the positioning rod is slidingly connected to the inner wall of the positioning hole.

[0012] Preferably, the mounting mechanism comprises two groups of mounting plates arranged at the two ends of the reinforcing beam, one side of the mounting plate penetrates through and is formed with three groups of mounting grooves, and the two ends of the mounting plate are mounted in the interior of the rear floor body through screws.

[0013] Preferably, the mounting mechanism further comprises six groups of mounting blocks fixedly mounted at the two ends of the reinforcing beam, the mounting blocks are arranged in correspondence with the mounting grooves, and the surfaces of the mounting blocks are slidingly connected to the inner walls of the mounting grooves.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The utility model discloses a fixing block, a fixing mechanism and an energy-absorbing box are used in cooperation, the energy-absorbing box is installed on the inner wall of the rear floor body through the fixing mechanism and the fixing block, when being impacted by the outside world, the energy-absorbing box can be preferentially collapsed, the collision time is prolonged, the peak impact force is reduced, the intrusion amount of the passenger compartment is reduced, the energy-absorbing box can be used as a reinforcing structure inside the longitudinal beam, the local rigidity and the torsional performance of the longitudinal beam can be improved, so that the energy-absorbing box can absorb energy through controllable deformation when colliding, the impact force transmitted to the passenger compartment is reduced, and the protection of the people in the vehicle is improved.

[0016] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the present application;

[0018] Figure 2 It is a structural schematic view of the present application from the top;

[0019] Figure 3 It is a structural schematic view of the fixing mechanism of the present application;

[0020] Figure 4 It is a structural schematic view of the positioning mechanism of the present application.

[0021] In the drawing: 1, rear floor body; 2, energy absorption box; 3, fixed block; 4, fixing mechanism; 401, fixed hole; 402, fixed rod; 403, first through hole; 5, reinforcing beam; 6, positioning mechanism; 601, positioning rod; 602, positioning hole; 7, mounting mechanism; 701, mounting plate; 702, mounting groove; 703, mounting block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-4 The present application provides a rear floor longitudinal beam, which comprises a rear floor body 1, a reinforcing assembly and an energy absorption assembly.

[0024] One end of the inner wall of the rear floor body 1 is provided with the reinforcing assembly for reinforcing the rear floor body 1, and the other end of the inner wall of the rear floor body 1 is provided with the energy absorption assembly for absorbing the energy generated by the impact on the rear floor body 1.

[0025] The energy absorption assembly comprises an energy absorption box 2, a fixed block 3 and a fixing mechanism 4, the energy absorption box 2 is arranged at one end of the inner wall of the rear floor body 1, the energy absorption box 2 is provided with the fixed block 3 at both ends, the fixed block 3 is provided with the fixing mechanism 4 between one end and the inner wall of one side of the rear floor body 1, and the fixed block 3 is connected to the inner wall of one side of the rear floor body 1 through the fixing mechanism 4.

[0026] By the cooperation of the energy absorption box 2, the fixing block 3 and the fixing mechanism 4, the energy absorption box 2 is installed on the inner wall of the rear floor body 1 by the fixing mechanism 4 and the fixing block 3, when subjected to external impact, the energy absorption box 2 can be preferentially collapsed to prolong the collision time, reduce the peak impact force, and reduce the intrusion amount of the passenger compartment, and the energy absorption box 2 can also be used as a reinforcing structure inside the longitudinal beam to improve the local stiffness and torsional performance of the longitudinal beam, so that the energy absorption box 2 can absorb energy through controllable deformation during the collision, reduce the impact force transmitted to the passenger compartment, and improve the protection of the people in the vehicle.

[0027] The fixing mechanism 4 comprises a fixing hole 401, a fixing rod 402 and a first through hole 403, the fixing hole 401 is arranged on one side of the fixing block 3, the fixing rod 402 is arranged on one side of the rear floor body 1, one end of the fixing rod 402 penetrates through the rear floor body 1 and extends to one side of the rear floor body 1 and is screwed with the inner cavity of the fixing hole 401, and the first through hole 403 is arranged on one side of the rear floor body 1, the inside of the first through hole 403 is arranged in a matching manner with the fixing rod 402, and one end of the fixing rod 402 is inserted into the inner cavity of the first through hole 403. Through the arrangement of the fixing mechanism 4, the energy absorption box 2 can be installed or disassembled by the fixing mechanism 4, which is convenient for repairing and replacing the energy absorption box 2, without replacing the entire longitudinal beam, thereby reducing the maintenance cost.

[0028] The reinforcing assembly comprises a reinforcing beam 5, a positioning mechanism 6 and a mounting mechanism 7, the reinforcing beam 5 is arranged at one end of the inner wall of the rear floor body 1, the reinforcing beam 5 is formed by two groups of vertical plates and three groups of horizontal plates interlaced with each other, the positioning mechanism 6 for positioning the reinforcing beam 5 is arranged between the bottom of the reinforcing beam 5 and the inner wall of the rear floor body 1, and the mounting mechanism 7 for mounting the reinforcing beam 5 is arranged between the two ends of the reinforcing beam 5 and the two sides of the rear floor body 1.

[0029] By the cooperation of the reinforcing beam 5, the positioning mechanism 6 and the mounting mechanism 7, the reinforcing beam 5 can be installed on the inner wall of the rear floor body 1, which can further improve the local stiffness and torsional performance of the longitudinal beam, and also facilitates the repair of the damaged rear floor longitudinal beam, thereby reducing the maintenance cost.

[0030] The positioning mechanism 6 comprises a positioning rod 601 and a positioning hole 602, the positioning rod 601 is fixedly installed on the inner wall of the rear floor body 1, and the positioning hole 602 is arranged through the top of the reinforcing beam 5, the positioning hole 602 is arranged in a corresponding manner with the positioning rod 601, and the upper end of the positioning rod 601 is slidingly connected to the inner wall of the positioning hole 602.

[0031] The mounting mechanism 7 comprises mounting plates 701, mounting grooves 702 and mounting blocks 703, two groups of mounting plates 701 are arranged at two ends of the reinforcing beam 5, three groups of mounting grooves 702 are arranged on one side of the mounting plate 701, the mounting plate 701 is mounted in the interior of the rear floor body 1 through screws, six groups of mounting blocks 703 are fixedly mounted at two ends of the reinforcing beam 5, the mounting block 703 is arranged in matching with the mounting groove 702, and the surface of the mounting block 703 is slidingly connected to the inner wall of the mounting groove 702, through the arrangement of the mounting mechanism 7, the reinforcing beam 5 is convenient to mount or dismount, so that the reinforcing beam 5 is convenient to maintain and replace, and the efficiency of maintaining the rear floor longitudinal beam is improved.

[0032] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rear floor longitudinal beam, characterized by: The utility model provides a rear floor body (1), one end of the inner wall of rear floor body (1) is provided with reinforcing assembly for reinforcing rear floor body (1), the other end of the inner wall of rear floor body (1) is provided with energy absorption assembly for absorbing energy of rear floor body (1) impacted energy; The energy absorption assembly includes an energy absorption box (2) disposed at one end of the inner wall of the rear floor body (1), and the two ends of the energy absorption box (2) are provided with fixing blocks (3), one end of the fixing block (3) is provided with a fixing mechanism (4) between the inner wall of one side of the rear floor body (1), and the fixing block (3) is connected to the inner wall of one side of the rear floor body (1) through the fixing mechanism (4).

2. A rear floor longitudinal beam according to claim 1, characterized in that: The fixing mechanism (4) includes a fixing hole (401) opened on one side of the fixing block (3) and a fixing rod (402) disposed on one side of the rear floor body (1), one end of the fixing rod (402) penetrates the rear floor body (1) and extends to one side of the rear floor body (1) and is threadedly connected with the inner cavity of the fixing hole (401).

3. A rear floor longitudinal beam according to claim 2, characterized in that: The fixing mechanism (4) further includes a first through hole (403) penetratingly opened on one side of the rear floor body (1), the inside of the first through hole (403) is disposed in a matching manner with the fixing rod (402), and one end of the fixing rod (402) is inserted into the inner cavity of the first through hole (403).

4. The rear floor longitudinal beam according to claim 1, characterized in that: The reinforcing assembly includes a reinforcing beam (5) disposed at one end of the inner wall of the rear floor body (1), a positioning mechanism (6) disposed between the bottom of the reinforcing beam (5) and the inner wall of the rear floor body (1) for positioning the reinforcing beam (5), and a mounting mechanism (7) disposed between the two ends of the reinforcing beam (5) and the two sides of the rear floor body (1) for mounting the reinforcing beam (5).

5. A rear floor longitudinal beam according to claim 4, characterized in that: The positioning mechanism (6) includes a positioning rod (601) fixedly installed on the inner wall of the rear floor body (1), and a positioning hole (602) penetratingly opened on the top of the reinforcing beam (5), the positioning hole (602) is correspondingly disposed with the positioning rod (601), and the upper end of the positioning rod (601) is slidingly connected to the inner wall of the positioning hole (602).

6. A rear floor longitudinal beam according to claim 4, characterized in that: The mounting mechanism (7) includes two groups of mounting plates (701) disposed at the two ends of the reinforcing beam (5), one side of the mounting plate (701) is penetratingly provided with three groups of mounting grooves (702), and the two ends of the mounting plate (701) are mounted in the interior of the rear floor body (1) through screws.

7. A rear floor longitudinal beam according to claim 6, characterized in that: The mounting mechanism (7) further includes six groups of mounting blocks (703) fixedly installed at the two ends of the reinforcing beam (5), the mounting blocks (703) are disposed in a matching manner with the mounting grooves (702), and the surface of the mounting blocks (703) is slidingly connected to the inner wall of the mounting grooves (702).

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