Automobile rear longitudinal beam reinforcing plate assembly convenient to disassemble and assemble

Abstract

The utility model discloses an automobile rear longitudinal beam reinforcing plate assembly convenient to disassemble and assemble, and relates to the technical field of automobile parts, the automobile rear longitudinal beam reinforcing plate assembly comprises a rear longitudinal beam, a reinforcing plate and a connecting assembly, the reinforcing plate is used for reinforcing the strength of the rear longitudinal beam, a fastener is used for pressing the side wall and the inner bottom wall of the reinforcing plate, and an upper inserting rod is used for pulling down the fastener. The upper end of the lower inserting rod is connected to the upper inserting rod in a sleeved mode, the connecting rod penetrates through the second connecting hole and the first connecting hole and is used for connecting the upper inserting rod and the lower inserting rod, and the bolt is inserted into the rear longitudinal beam and the reinforcing plate from the other side face and connected with the threaded hole. The assembling convenience can be effectively improved, the assembling work is simpler and easier to operate, meanwhile, the rear longitudinal beam and the reinforcing plate can be conveniently disassembled when the rear longitudinal beam and the reinforcing plate need to be overhauled in the later period, the rear longitudinal beam and the reinforcing plate can be conveniently overhauled in the later period, and the assembling efficiency is improved. And the connecting rod can play a role in preventing rotation in the process of screwing the bolt, so that the assembly work is convenient to carry out.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile rear longitudinal beam reinforcement plate assembly which is easy to disassemble and assemble. Background Art

[0002] At present, most passenger cars are non-load-bearing bodies. The frame of the non-load-bearing body supports and connects various parts of the car, and bears various loads from inside and outside the car. The rear longitudinal beam is the skeleton of the rear chassis of the car, that is, the frame under the rear seat and trunk, and is the key load-bearing component of the rear structure of the car body. The rear floor longitudinal beam structure of traditional models is mainly made of steel plates stamped and then welded in sections. It is composed of various segmented nested structures and uses mature welding technology. It has high production efficiency and low cost. It is widely used in mainstream economical and practical models. However, with the continuous improvement of safety regulations related to automobile collisions, higher requirements are also put forward for the strength and bending resistance of automobile longitudinal beams, especially the need to ensure that the longitudinal beam still has sufficient strength and bending resistance when the car collides at high speed. Specifically, the current automobile rear longitudinal beam assembly meets the strength, stiffness and body mode of the rear suspension mounting point and the suspension spring mounting point by welding cold stamping parts of high-strength materials in multiple sections, arranging reinforcements, and increasing the thickness of sheet metal. The most common way is to add a reinforcement plate on its inner side for local reinforcement.

[0003] However, the reinforcement plate is mostly fixed to the inside of the rear longitudinal beam by welding, but the welding structure is relatively complex and the welding operation is not convenient, which makes the assembly of the reinforcement plate inconvenient, resulting in low production efficiency and is not conducive to assembly production work. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides an automobile rear longitudinal beam reinforcement plate assembly that is easy to disassemble and assemble, thereby solving the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: an automobile rear longitudinal beam reinforcement plate assembly that is easy to disassemble and assemble, comprising a rear longitudinal beam, a reinforcement plate and a connecting assembly: the reinforcement plate has a U-shaped cross-section and is installed inside the rear longitudinal beam through the connecting assembly to strengthen the strength of the rear longitudinal beam;

[0008] The connecting assembly includes: a fastener, which is arranged in the reinforcing plate and is used to compress the side wall and the inner bottom wall of the reinforcing plate; an upper plug rod, which is hollow inside and welded in the fastener in the vertical direction, and is used to pull down the fastener, and a second connecting hole is opened on the upper plug rod; a lower plug rod, which is hollow inside and is inserted into the rear longitudinal beam and the reinforcing plate from the bottom, a bottom pressure plate is provided at the lower end of the lower plug rod, and the upper end is sleeved on the upper plug rod, and a first connecting hole corresponding to the second connecting hole is opened on the lower plug rod; a connecting rod is inserted into the rear longitudinal beam and the reinforcing plate from one side, and passes through the second connecting hole and the first connecting hole at the same time, and is used to connect the upper plug rod with the lower plug rod, and one end of the connecting rod is provided with a side pressure plate abutting against one side of the rear longitudinal beam, and the other end is provided with an oblique angle and a threaded hole; a bolt is inserted into the rear longitudinal beam and the reinforcing plate from the other side and connected to the threaded hole, and a gasket abutting against the other side of the rear longitudinal beam is sleeved on the bolt.

[0009] Optionally, the bottom of the reinforcing plate is provided with a bottom reinforcement portion along the length direction, and the side is provided with a side reinforcement portion, so as to increase the strength of the reinforcing plate itself.

[0010] Optionally, it also includes a positioning component for positioning the reinforcing plate, the positioning component includes a stepped positioning block welded to the inner bottom wall of the rear longitudinal beam, the interior of the positioning block is hollow, and the positioning component also includes a positioning hole opened at the bottom of the reinforcing plate, the positioning hole is adapted to the positioning block.

[0011] Optionally, a fifth plug hole connected to the interior of the positioning block is provided on the bottom surface of the rear longitudinal beam for installing a lower plug rod.

[0012] Optionally, the upper plug rod and the lower plug rod are both square tube-shaped.

[0013] Optionally, a second hole is formed on one side of the rear longitudinal beam, and a fourth hole connected to the second hole is formed on one side of the reinforcement plate for installing a connecting rod; a first hole is formed on the other side of the rear longitudinal beam, and a third hole connected to the first hole is formed on the other side of the reinforcement plate for installing a bolt.

[0014] Optionally, the cross-sectional shapes of the connecting rod, the second plug hole and the fourth plug hole are all polygonal.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The purpose of assembling and fixing the reinforcement plate on the rear longitudinal beam can be achieved, and the surfaces between the reinforcement plate and the rear longitudinal beam can be fixed by only tightening the bolts. Compared with welding, it can effectively improve the convenience of assembly, making the assembly work simpler and easier to operate, and can improve the assembly production efficiency to a certain extent. At the same time, when the rear longitudinal beam and the reinforcement plate need to be inspected and repaired in the later stage, the two can be easily separated, so that the removal of the reinforcement plate is more convenient, which is conducive to the later inspection and repair of the rear longitudinal beam and the reinforcement plate;

[0017] 2. During assembly, the purpose of positioning the reinforcing plate can be achieved by connecting and cooperating with the positioning hole and the positioning block, thereby ensuring its assembly accuracy, preventing assembly errors, and ensuring the yield rate of the assembly work. In addition, by setting the upper plug rod and the lower plug rod to a square tube type, it is convenient to adjust the orientation of the first connecting hole and the second connecting hole when the ends of the two are connected, so as to facilitate the corresponding connection of the first connecting hole and the second connecting hole. In addition, by setting the cross-sectional shape of the connecting rod, the second plug hole and the fourth plug hole to a polygon, it can play an anti-rotation role in the process of tightening the bolt, which is conducive to tightening the bolt and facilitating the assembly work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a rear-view stereoscopic structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional explosion structure of the utility model;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the rear longitudinal beam of the utility model;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the reinforcing plate of the utility model;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the fastener of the utility model;

[0025] Figure 8 It is a schematic diagram of the three-dimensional explosion structure of the bolt of the utility model.

[0026] In the figure: 1, rear longitudinal beam; 101, first plug hole; 102, second plug hole; 2, reinforcement plate; 201, bottom reinforcement part; 202, side reinforcement part; 203, positioning hole; 204, third plug hole; 205, fourth plug hole; 3, fastener; 4, bolt; 401, gasket; 5, connecting rod; 501, threaded hole; 502, side pressure plate; 6, positioning block; 7, lower plug rod; 701, bottom pressure plate; 702, first connecting hole; 8, upper plug rod; 801, second connecting hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides Figures 1 to 8 An embodiment of an automobile rear longitudinal beam reinforcement plate assembly that is easy to disassemble and assemble is shown:

[0029] It includes a rear longitudinal beam 1, a reinforcement plate 2 and a connecting component:

[0030] The reinforcing plate 2 has a U-shaped cross-section and is installed inside the rear longitudinal beam 1 through a connecting assembly to strengthen the strength of the rear longitudinal beam 1;

[0031] like Figure 6 As shown, the bottom of the reinforcing plate 2 is provided with a bottom reinforcing portion 201 along the length direction, and the side is provided with a side reinforcing portion 202, which is used to increase the strength of the reinforcing plate 2 itself, and thereby increase the local strength of the rear longitudinal beam 1;

[0032] like Figures 3 to 6 As shown, it also includes a positioning assembly for positioning the reinforcing plate 2, the positioning assembly includes a stepped positioning block 6 welded to the inner bottom wall of the rear longitudinal beam 1, the interior of the positioning block 6 is hollow, and the positioning assembly also includes a positioning hole 203 opened at the bottom of the reinforcing plate 2, and the positioning hole 203 is adapted to the positioning block 6;

[0033] During assembly, the reinforcing plate 2 is placed inside the rear longitudinal beam 1 and the positioning hole 203 is sleeved on the upper end of the positioning block 6, so that the reinforcing plate 2 can be positioned and installed, and its assembly accuracy can be guaranteed.

[0034] like Figures 3 to 8 As shown, the connection components include:

[0035] The fastener 3 is provided in the reinforcing plate 2 and is used to press the side wall and the inner bottom wall of the reinforcing plate 2;

[0036] The upper plug rod 8 is hollow inside and is welded in the fastener 3 along the vertical direction, and is used to pull down the fastener 3. A second connecting hole 801 is opened on the upper plug rod 8;

[0037] The lower plug rod 7 is hollow inside and inserted into the rear longitudinal beam 1 and the reinforcing plate 2 from the bottom. The lower end of the lower plug rod 7 is provided with a bottom pressing plate 701. The bottom pressing plate 701 can fix the bottom of the reinforcing plate 2 and the rear longitudinal beam 1 by cooperating with the fastener 3. The upper end is sleeved on the upper plug rod 8, and the lower plug rod 7 is provided with a first connecting hole 702 corresponding to the second connecting hole 801.

[0038] The bottom surface of the rear longitudinal beam 1 is provided with a fifth insertion hole which is connected to the interior of the positioning block 6 and is used to install the lower insertion rod 7;

[0039] The upper plug rod 8 and the lower plug rod 7 are both square tube-shaped, so that when the ends of the two are butted together, the first connection hole 702 and the second connection hole 801 can be easily connected at corresponding positions;

[0040] The connecting rod 5 is inserted into the rear longitudinal beam 1 and the reinforcing plate 2 from one side, and passes through the second connecting hole 801 and the first connecting hole 702, and is used to connect the upper plug rod 8 with the lower plug rod 7. One end of the connecting rod 5 is provided with a side pressure plate 502 that abuts against one side of the rear longitudinal beam 1, and can be fixed between the side edge of the reinforcing plate 2 and the rear longitudinal beam 1 by cooperating with the fastener 3. The other end is provided with an oblique angle and a threaded hole 501.

[0041] The bolt 4 is inserted into the rear longitudinal beam 1 and the reinforcing plate 2 from the other side and connected with the threaded hole 501, and a gasket 401 is sleeved on the bolt 4 and abuts against the other side of the rear longitudinal beam 1;

[0042] A second plug hole 102 is formed on one side of the rear longitudinal beam 1, and a fourth plug hole 205 connected to the second plug hole 102 is formed on one side of the reinforcing plate 2 for installing the connecting rod 5;

[0043] A first plug hole 101 is formed on the other side of the rear longitudinal beam 1, and a third plug hole 204 connected to the first plug hole 101 is formed on the other side of the reinforcing plate 2 for installing the bolt 4;

[0044] The cross-sectional shapes of the connecting rod 5 , the second insertion hole 102 and the fourth insertion hole 205 are all polygonal, so that they can play a role in preventing rotation when the bolt 4 is tightened.

[0045] After placing the reinforcing plate 2 in the rear longitudinal beam 1, place the fastener 3 in the reinforcing plate 2, then insert the lower plug rod 7 upward and pass through the fifth plug hole and the interior of the positioning block 6, and ensure that the upper end of the lower plug rod 7 is sleeved on the lower end of the upper plug rod 8, and ensure that the second connecting hole 801 is correspondingly connected to the first connecting hole 702, and at this time the height of the second connecting hole 801 is slightly higher than the height of the first connecting hole 702, then insert the connecting rod 5 into the rear longitudinal beam 1 and the reinforcing plate 2 through the second plug hole 102 and the fourth plug hole 205 on the side, and ensure that the beveled end of the connecting rod 5 is inserted into the second connecting hole 801 and the first connecting hole 702, and at this time the beveled end of the connecting rod 5 is in contact with the inner bottom wall of the second connecting hole 801 and the inner top wall of the first connecting hole 702 respectively, and then insert the bolt 4 into the rear longitudinal beam 1 and the reinforcing plate 2 through the first plug hole 101 and the third plug hole 204, and also ensure that the threaded end of the bolt 4 is inserted into the second connecting hole 801 The bolt 4 is screwed into the first connecting hole 702 and the threaded end is ensured to be butted against the threaded hole 501 at the end of the connecting rod 5. Finally, the bolt 4 can be tightened and its threaded end is screwed into the threaded hole 501. During this process, the beveled end of the connecting rod 5 gradually presses the inner bottom wall of the second connecting hole 801 downwards and the inner top wall of the first connecting hole 702 upwards, thereby pulling the upper plug rod 8 and the fastener 3 downwards, and pulling the lower plug rod 7 and the bottom pressure plate 701 upwards. At this time, the fastener 3 is pressed tightly against the fastener The inner bottom wall of the reinforcement plate 2, and the bottom pressure plate 701 is pressed tightly against the bottom surface of the rear longitudinal beam 1, so that the bottom of the rear longitudinal beam 1 is connected and fixed to the bottom of the reinforcement plate 2, and as the bolts 4 and the connecting rods 5 are tightened, the gasket 401 and the side pressure plate 502 can be pressed tightly against the two side walls of the rear longitudinal beam 1 respectively, and at the same time, the two ends of the fastener 3 are cooperated to fix the side walls of the reinforcement plate 2 to the side walls of the rear longitudinal beam 1, so as to achieve the purpose of assembling and fixing the reinforcement plate 2 on the rear longitudinal beam 1.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automobile rear longitudinal beam reinforcement plate assembly that is easy to disassemble and assemble, comprising a rear longitudinal beam (1), a reinforcement plate (2) and a connecting component, characterized in that: A reinforcing plate (2) having a U-shaped cross-section and installed inside the rear longitudinal beam (1) through a connecting assembly to reinforce the strength of the rear longitudinal beam (1); The connection component comprises: A fastener (3) is disposed in the reinforcing plate (2) and is used to press the side wall and the inner bottom wall of the reinforcing plate (2); The upper plug rod (8) is hollow inside and is welded in the fastener (3) along the vertical direction, and is used to pull down the fastener (3). The upper plug rod (8) is provided with a second connection hole (801); The lower plug rod (7) is hollow inside and is inserted into the rear longitudinal beam (1) and the reinforcing plate (2) from the bottom. The lower end of the lower plug rod (7) is provided with a bottom pressure plate (701), and the upper end is sleeved on the upper plug rod (8). The lower plug rod (7) is provided with a first connection hole (702) corresponding to the second connection hole (801); A connecting rod (5) is inserted into the rear longitudinal beam (1) and the reinforcing plate (2) from one side and passes through the second connecting hole (801) and the first connecting hole (702) to connect the upper plug rod (8) and the lower plug rod (7). One end of the connecting rod (5) is provided with a side pressure plate (502) that abuts against one side of the rear longitudinal beam (1), and the other end is provided with an oblique angle and a threaded hole (501). The bolt (4) is inserted into the rear longitudinal beam (1) and the reinforcing plate (2) from the other side and connected to the threaded hole (501), and a gasket (401) is sleeved on the bolt (4) and abuts against the other side of the rear longitudinal beam (1).

2. The easily disassembled automobile rear longitudinal beam reinforcement plate assembly according to claim 1, characterized in that: The bottom of the reinforcing plate (2) is provided with a bottom reinforcing portion (201) along the length direction, and the side is provided with a side reinforcing portion (202) for increasing the strength of the reinforcing plate (2) itself.

3. The easily disassembled automobile rear longitudinal beam reinforcement plate assembly according to claim 1, characterized in that: The invention also comprises a positioning assembly for positioning the reinforcing plate (2), the positioning assembly comprising a stepped positioning block (6) welded to the inner bottom wall of the rear longitudinal beam (1), the interior of the positioning block (6) being hollow, and the positioning assembly further comprising a positioning hole (203) opened at the bottom of the reinforcing plate (2), the positioning hole (203) being compatible with the positioning block (6).

4. The easily disassembled automobile rear longitudinal beam reinforcement plate assembly according to claim 3, characterized in that: The bottom surface of the rear longitudinal beam (1) is provided with a fifth insertion hole which is in communication with the interior of the positioning block (6) and is used for installing the lower insertion rod (7).

5. The easily disassembled automobile rear longitudinal beam reinforcement plate assembly according to claim 1, characterized in that: The upper insertion rod (8) and the lower insertion rod (7) are both square tube-shaped.

6. The easily disassembled automobile rear longitudinal beam reinforcement plate assembly according to claim 1, characterized in that: A second plug hole (102) is provided on one side of the rear longitudinal beam (1), and a fourth plug hole (205) connected to the second plug hole (102) is provided on one side of the reinforcing plate (2) for installing a connecting rod (5); A first insertion hole (101) is provided on the other side of the rear longitudinal beam (1), and a third insertion hole (204) connected to the first insertion hole (101) is provided on the other side of the reinforcing plate (2) for installing a bolt (4).

7. The easily disassembled automobile rear longitudinal beam reinforcement plate assembly according to claim 6, characterized in that: The cross-sectional shapes of the connecting rod (5), the second plug hole (102) and the fourth plug hole (205) are all polygonal.

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