A side impact reinforcement structure for rear doors without B-pillars and automobile

Abstract

The utility model discloses a B-pillar-free split-door rear door side impact reinforcement structure and a car, comprising a body side, a rear door sheet metal is arranged on the body side, a threshold beam is arranged at the bottom of the body side, the threshold beam is located below the rear door sheet metal, a connecting plate is detachably connected to the bottom of the rear door sheet metal, a locking pin is arranged on the connecting plate, a mounting plate is detachably connected to the threshold beam, a locking plate is arranged on the mounting plate, and the end of the locking pin extends between the locking plate and the mounting plate. The B-pillar-free split-door rear door side impact reinforcement structure of the utility model can improve the strength and safety of the body structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of rear vehicle doors, and in particular relates to a side impact reinforcement structure of a rear door with split doors without a B-pillar. Background Art

[0002] With the development of society and the improvement of people's requirements for automobile safety performance, people's requirements for automobile side collision are getting higher and higher. The traditional automobile body structure mainly includes A-pillar, B-pillar and C-pillar to protect the safety of passengers in the car, especially the structure at the B-pillar, which plays a vital role in the safety of passengers in the car when the vehicle has a side collision.

[0003] At present, the double-door models on the market have eliminated the B-pillar structure for the convenience of passengers entering and exiting and the aesthetics of the vehicle itself. Due to the special nature of the double-door structure, the side panel itself is a B-pillar-free structure, and the B-pillar structure is generally fixed to the rear door by welding. The existing rear door B-pillar structure is only connected to the body frame by upper and lower locking, resulting in weak strength at the rear door B-pillar. Therefore, the structural strength and safety of the body cannot be guaranteed, especially the safety of the driver in a side collision, which is not easy to meet the side collision requirements in the regulations.

[0004] The invention patent with publication number CN107512158A was published on December 26, 2017. The name of the reinforced automobile side-opening door structure is a front door hinged to the A-pillar and a rear door hinged to the C-pillar. It is also provided with a B-pillar extending longitudinally from the top of the car to the car floor. The B-pillar is fixedly connected to the rear end of the inner wall of the front door or the front end of the inner wall of the rear door. The car floor is provided with a locking mechanism at the position adapted to the lower end of the front door and the rear door, respectively, so that the front door and the rear door in the closed state can be locked with the car floor. The reinforced automobile side-opening door structure does not strengthen the rear door side impact structure, and cannot ensure the safety of the driver when the vehicle hits the side. Utility Model Content

[0005] The utility model aims to provide a B-pillar-free rear door side impact reinforcement structure and a car that improves the structural strength and safety of the car body and opens doors in view of the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] The side impact reinforcement structure of the rear door without a B-pillar and opening doors includes a body side, a rear door sheet metal is arranged on the body side, a threshold beam is arranged at the bottom of the body side, the threshold beam is located below the rear door sheet metal, a connecting plate is detachably connected to the bottom of the rear door sheet metal, a locking pin is arranged on the connecting plate, a mounting plate is detachably connected to the threshold beam, a locking plate is arranged on the mounting plate, and an end of the locking pin extends between the locking plate and the mounting plate.

[0008] A protrusion is provided at one end of the locking plate, and the cross section of the protrusion is a "X"-shaped structure. The locking plate and the mounting plate form a locking groove, and the end of the locking pin extends into the locking groove.

[0009] The end of the locking pin is an arc-shaped structure, and the protrusion is adapted to the shape of the locking plate; the locking pin is a planar structure.

[0010] The threshold beam is arranged horizontally, the mounting plate is welded to the outer side of the threshold beam, the locking plate and the mounting plate are connected by a first bolt; the connecting plate and the locking pin are an integral structure, and the connecting plate and the rear door sheet metal are connected by a second bolt.

[0011] The first bolts are arranged at the middle and both ends of the locking plate, and two second bolts are provided.

[0012] A reinforcing rib is provided at the other end of the locking plate, and a connecting bracket is provided on the reinforcing rib.

[0013] The top end of the first bolt is consistent in height with the locking plate.

[0014] The automobile comprises a body side, wherein the body side comprises the above-mentioned B-pillar-free split-door rear door side impact reinforcement structure.

[0015] The technical effect of the utility model is as follows: the side impact reinforcement structure of the rear door without B-pillar is adopted, and a reinforcement structure is added between the side wall of the vehicle body and the rear door sheet metal. The structural strength of the rear door B-pillar is improved by setting the locking pin and the locking plate, thereby improving the structural strength of the vehicle body, so that when the vehicle is hit from the side, the locking pin and the locking plate can form a locking structure, thereby achieving the purpose of protecting the driver's safety. The components in the reinforcement structure are easy to connect, the connection effect is stable and reliable, and the existing vehicle body structure can be modified, with low application cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 It is a schematic diagram of the arrangement position of the side impact reinforcement structure of the rear door without B-pillar opening of the utility model;

[0018] Figure 2 yes Figure 1 A partial enlarged view of

[0019] Figure 3-1 and Figure 3-2 It is a schematic diagram of the relative relationship between the lock pin and the lock plate of the utility model;

[0020] Figure 4-1 and Figure 4-2 It is a schematic diagram of the connection between the lock pin and the rear door sheet metal of the utility model;

[0021] Figure 5 It is a schematic diagram of the connection between the lock plate and the threshold beam of the utility model.

[0022] The markings in the figure are: 1. Body side; 2. Rear door sheet metal; 3. Door sill beam; 4. Connecting plate; 5. Locking pin; 6. Mounting plate; 7. Locking plate; 8. Protrusion; 9. Locking groove; 10. Reinforcing rib; 11. First bolt; 12. Second bolt; 13. Connecting bracket. DETAILED DESCRIPTION

[0023] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of the embodiments, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution and to facilitate their implementation.

[0024] like Figures 1 to 5 As shown, the side impact reinforcement structure of the rear door without B-pillars comprises a body side 1, a rear door sheet metal 2 is arranged on the body side 1, a threshold beam 3 is arranged at the bottom of the body side 1, the threshold beam 3 is located below the rear door sheet metal 2, a connecting plate 4 is detachably connected to the bottom of the rear door sheet metal 2, a locking pin 5 is arranged on the connecting plate 4, a mounting plate 6 is detachably connected to the threshold beam 3, a locking plate 7 is arranged on the mounting plate 6, and the end of the locking pin 5 extends between the locking plate 7 and the mounting plate 6. The end of the locking pin 5 is located between the locking plate 7 and the mounting plate 6, that is, the locking pin 5 is in a non-contact state with the locking plate 7 or the mounting plate 6 in a theoretical state, and the force direction of the side impact of the vehicle body is the Y direction of the vehicle body coordinate system. After the vehicle has a side impact, the locking pin 5 moves along the Y direction to form a locking structure with the locking plate 7 to prevent the rear door sheet metal 2 from being completely dislodged, and the strength of the B-pillar on the rear door sheet metal 2 is strengthened, that is, the driver's safety is guaranteed. The reinforcement structure is located at the bottom and will not take up too much space in the frame and will not interfere with the opening and closing of the door.

[0025] like Figure 5 As shown, a protrusion 8 is provided at one end of the lock plate 7, and the cross section of the protrusion 8 is a "J"-shaped structure. The lock plate 7 and the mounting plate 6 form a lock groove 9, and the end of the lock pin 5 extends into the lock groove 9. The protrusion 8 is provided on the lock plate 7, which can facilitate the insertion of the lock pin 5. One end of the protrusion 8 is closed, and the lock pin 5 is inserted into the lock groove 9 and will not be in contact with the lock plate 7 or the mounting plate 6. Therefore, when the vehicle body does not have a side collision, the lock pin 5 always has the function of achieving locking; the protrusion 8 structure with a "J"-shaped cross section can facilitate the force to be dispersed to the entire lock plate 7, ensuring a reliable locking effect after a side collision.

[0026] like Figure 3-1 and Figure 3-2As shown, the end of the lock pin 5 is an arc-shaped structure, and the protrusion 8 is adapted to the shape of the lock plate 7; the lock pin 5 is a plane structure. The arc-shaped part can reduce excessive local stress, which is conducive to the dispersion of side impact. The contact area between the lock pin 5 and the lock plate 7 of the plane structure is large, and the locking effect after the side impact is better.

[0027] like Figure 2 and Figure 5 As shown, the threshold beam 3 is horizontally arranged, the mounting plate 6 is welded to the outer side of the threshold beam 3, and the locking plate 7 is connected to the mounting plate 6 by a first bolt 11; the connecting plate 4 and the locking pin 5 are an integral structure, and the connecting plate 4 and the rear door sheet metal 2 are connected by a second bolt 12. The threshold beam 3 is horizontally arranged so that the mounting plate 6 can be accurately installed. The mounting plate 6 is fixed by welding, and the processing technology is simple and convenient for modification; the use of the connecting plate 4 can avoid the direct structural modification of the locking pin 5 on the rear door sheet metal 2. The connecting plate 4 and the locking pin 5 are an integral structure, and the structural strength of the two is higher, and the connection failure will not be caused by excessive force on the locking pin 5; the locking plate 7 and the mounting plate 6, as well as the connecting plate 4 and the rear door sheet metal 2 are all connected by bolts to achieve a detachable effect, so the reinforced structure can be modified on the existing body side 1, which can reduce the development cost.

[0028] like Figure 4-1 to Figure 5 As shown, the first bolt 11 is provided at the middle and both ends of the lock plate 7, and two second bolts 12 are provided. The lock plate 7 can be stably mounted on the mounting plate 6 by using multiple bolts, and the two second bolts 12 can stably mount the connecting plate 4 on the rear door sheet metal 2, thereby ensuring that the lock plate 7 and the lock pin 5 are in non-contact in a theoretical state, so that the two can reliably form a locking structure when the vehicle body is hit from the side.

[0029] like Figure 5 As shown, a reinforcing rib 10 is provided at the other end of the lock plate 7, and a connecting bracket 13 is provided on the reinforcing rib 10. The lock plate 7 is formed into a protrusion 8 and a reinforcing rib 10 by stamping and bending. The protrusion 8 and the reinforcing rib 10 are respectively located at both ends of the lock plate 7. The reinforcing rib 10 can improve the structural strength of the lock plate 7 and withstand deformation. When the lock plate 7 is subjected to force, the impact is dispersed to prevent the local connection point from coming out, and the connecting bracket 13 on the reinforcing rib 10 can provide connection for other parts on the vehicle body.

[0030] like Figure 5 As shown, the top of the first bolt 11 is at the same height as the locking plate 7. The above structure can achieve a hidden effect of the bolt connection, so the extrusion portion of the bolt will not interfere with the installation of other structures.

[0031] The automobile comprises a body side 1, wherein the body side 1 comprises the above-mentioned B-pillar-free split-door rear door side impact reinforcement structure.

[0032] The lock pin 5 is bolted and fixed to the rear door sheet metal 2, the lock plate 7 is bolted and fixed to the mounting plate 6, and the mounting plate 6 is welded and fixed to the door sill beam 3. The lock pin 5 and the lock plate 7 assembly are in a non-contact state in theory, but after the vehicle has a side collision, the lock pin 5 in the reinforced structure moves along the Y direction and locks with the lock plate 7 assembly, which can prevent the rear door sheet metal 2 structure from being completely dislodged and increase the side collision strength of the rear door. By implementing the above technical solution, the problem of weak strength caused by the B-pillar structure being connected to the vehicle body frame only through the upper and lower locking structures can be overcome.

[0033] The side impact reinforcement structure of the rear door without B-pillar is provided with a reinforcement structure between the body side 1 and the rear door sheet metal 2, and the structural strength of the rear door B-pillar is improved by the arrangement of the lock pin 5 and the lock plate 7, thereby improving the structural strength of the vehicle body, so that when the vehicle is hit from the side, the lock pin 5 and the lock plate 7 can form a locking structure, thereby achieving the purpose of protecting the driver's safety. The components in the reinforcement structure are easy to connect, the connection effect is stable and reliable, and the existing vehicle body structure can be modified, with low application cost.

[0034] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A side impact reinforcement structure for a rear door without a B-pillar, comprising a vehicle body side panel (1), wherein a rear door sheet metal (2) is arranged on the vehicle body side panel (1), and characterized in that: A threshold beam (3) is provided at the bottom of the vehicle body side (1), and the threshold beam (3) is located below the rear door sheet metal (2). A connecting plate (4) is detachably connected to the bottom of the rear door sheet metal (2), and a locking pin (5) is provided on the connecting plate (4). A mounting plate (6) is detachably connected to the threshold beam (3), and a locking plate (7) is provided on the mounting plate (6). The end of the locking pin (5) extends between the locking plate (7) and the mounting plate (6).

2. The side impact reinforcement structure for a rear door without a B-pillar according to claim 1, characterized in that: A protrusion (8) is provided at one end of the locking plate (7), and the cross section of the protrusion (8) is in a "X"-shaped structure. The locking plate (7) and the mounting plate (6) form a locking groove (9), and the end of the locking pin (5) extends into the locking groove (9).

3. The side impact reinforcement structure for a rear door without a B-pillar according to claim 2, characterized in that: The end of the locking pin (5) is an arc-shaped structure, and the protrusion (8) is matched with the shape of the locking plate (7); the locking pin (5) is a planar structure.

4. The side impact reinforcement structure for a rear door without a B-pillar according to claim 3, characterized in that: The threshold beam (3) is arranged horizontally, the mounting plate (6) is welded to the outer side of the threshold beam (3), the locking plate (7) and the mounting plate (6) are connected by a first bolt (11); the connecting plate (4) and the locking pin (5) are an integral structure, and the connecting plate (4) and the rear door sheet metal (2) are connected by a second bolt (12).

5. The side impact reinforcement structure for a rear door without a B-pillar according to claim 4, characterized in that: The first bolts (11) are arranged at the middle and both ends of the locking plate (7), and two second bolts (12) are provided.

6. The side impact reinforcement structure for a rear door without a B-pillar according to claim 5, characterized in that: The other end of the locking plate (7) is provided with a reinforcing rib (10), and a connecting bracket (13) is provided on the reinforcing rib (10).

7. The side impact reinforcement structure for a rear door without a B-pillar according to claim 5, characterized in that: The top end of the first bolt (11) is at the same height as the locking plate (7).

8. An automobile, comprising a vehicle body side (1), characterized in that: The vehicle body side panel (1) comprises the B-pillar-free double-door rear door side impact reinforcement structure as described in any one of claims 1 to 7.

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