Energy-absorbing bumper device

Abstract

The utility model discloses an energy-absorbing bumper device which comprises a first collision energy-absorbing assembly, a second collision energy-absorbing assembly and a frame, the first collision energy-absorbing assembly is formed in a metal plate forming and tailor-welding mode, and a forming metal plate and spring combined structure is additionally arranged in front of the first collision energy-absorbing assembly to form the second collision energy-absorbing assembly. In this way, energy is firstly absorbed through the pressure spring during collision, and when collision impact force is large enough, the rear sheet metal tailor-welded structure deforms again to absorb energy, so that the collision impact force is buffered through two energy absorption areas, and the safety of a driver and passengers is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of bumpers, in particular to an energy absorbing bumper device. Background Art

[0002] With the continuous development of the automobile industry, people are paying more and more attention to the safety of automobiles. Traffic collision is one of the important factors affecting the safety of the whole vehicle, which requires higher requirements for bumpers during the development stage of automobiles.

[0003] Traditional bumpers achieve their collision buffering function by using processes such as pipe or sheet metal welding or roll forming, and utilizing the deformation and energy absorption of the metal material itself. However, the energy absorption and buffering capacity that relies solely on the deformation of the metal material is poor, and the safety protection function for drivers and passengers is poor. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems and / or the problems existing in the existing energy absorbing bumper device, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an energy-absorbing bumper device, which forms a first collision energy-absorbing component by sheet metal forming and welding, and adds a formed sheet metal and spring combination structure in front of the first collision energy-absorbing component to form a second collision energy-absorbing component. In this way, during a collision, energy is first absorbed by the compression spring. When the collision impact force is large enough, the sheet metal welding structure at the rear is deformed again to absorb energy. In this way, there are two energy-absorbing areas to buffer the collision impact force and better protect the safety of the driver and passengers.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An energy absorbing bumper device, comprising:

[0009] a first collision energy absorbing component;

[0010] A second collision energy absorbing component is located at the front end of the first collision energy absorbing component, comprising a curved baffle, three bosses installed on the front side wall of the curved baffle, and three springs located on the rear side wall of the curved baffle, the curved baffle having first arcuate surfaces at both ends, the middle position of the curved baffle protruding away from the first collision energy absorbing component and forming a second arcuate surface, one of the middle bosses is located at the center of the second arcuate surface, and the other two bosses are symmetrically arranged on the front side wall of the curved baffle with the middle boss as the center, a buffer groove is opened at the rear side wall of the curved baffle at the position corresponding to the boss, the front end of the spring abuts against the inside of the buffer groove, and the tail end of the spring abuts against the front side wall of the first collision energy absorbing component;

[0011] The vehicle frame is connected to the rear side wall of the first collision energy absorbing component.

[0012] As a preferred solution of the energy-absorbing bumper device described in the utility model, the first collision energy-absorbing component includes an intermediate plate, a rear connecting plate welded to the rear side wall of the intermediate plate, and a front connecting plate welded to the front side wall of the intermediate plate, and three positioning grooves are opened on the side wall of the front connecting plate at positions corresponding to the spring, and the tail end of the spring abuts against the side wall of the positioning groove.

[0013] As a preferred solution of the energy-absorbing bumper device described in the utility model, first connecting holes are opened at both ends of the middle plate, and second connecting holes are opened at positions of the frame corresponding to the first connecting holes.

[0014] As a preferred solution of the energy-absorbing bumper device described in the utility model, the first collision energy-absorbing component further includes a positioning pin, and the positioning pin passes through the first connecting hole and the second connecting hole.

[0015] As a preferred solution of the energy-absorbing bumper device described in the utility model, the second collision energy-absorbing component also includes a bolt, which passes through the spring, the curved baffle, the front connecting plate, the middle plate and the rear connecting plate in sequence, and the end of the bolt extending out of the side wall of the spring has a first shaft retaining ring, and the end of the bolt extending out of the side wall of the rear connecting plate has a second shaft retaining ring.

[0016] Compared with the prior art: the first collision energy absorbing component is formed by sheet metal forming and welding, and a formed sheet metal and spring combination structure is added in front of the first collision energy absorbing component to form a second collision energy absorbing component. In this way, energy is first absorbed by the compression spring during a collision. When the collision impact force is large enough, the rear sheet metal welding structure deforms again to absorb energy. In this way, there are two energy absorption areas to buffer the collision impact force and better protect the safety of the driver and passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is an overall structural diagram of an energy-absorbing bumper device of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the first collision energy absorbing component of an energy absorbing bumper device and a vehicle frame of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection between the first collision energy absorbing component and the second collision energy absorbing component of an energy absorbing bumper device of the utility model;

[0021] Figure 4 This is a structural diagram of the first collision energy absorbing component of an energy absorbing bumper device of the utility model. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides an energy absorbing bumper device, which forms a first collision energy absorbing component by means of sheet metal forming and welding, and adds a formed sheet metal and spring combination structure in front of the first collision energy absorbing component to form a second collision energy absorbing component. In this way, energy is first absorbed by the compression spring during a collision, and when the collision impact force is large enough, the sheet metal welding structure at the rear is deformed and absorbs energy again. In this way, there are two energy absorbing areas to buffer the collision impact force, thereby better protecting the safety of the driver and passengers.

[0026] Figure 1-4 The following is a schematic diagram of a structure of an energy absorbing bumper device of the utility model. Figure 1-Figure 4An energy absorbing bumper device of the present embodiment includes a first collision energy absorbing component 100 , a second collision energy absorbing component 200 and a vehicle frame 300 .

[0027] The first collision energy absorbing assembly 100 includes an intermediate plate 110, a rear connecting plate 120 welded to the rear side wall of the intermediate plate 110, and a front connecting plate 130 welded to the front side wall of the intermediate plate 110. Three positioning grooves 131 are provided on the side wall of the front connecting plate 130 at positions corresponding to the spring 230. The tail end of the spring 230 abuts against the side wall of the positioning groove 131. An integral anti-collision energy absorbing plate is formed by welding the intermediate plate 110, the rear connecting plate 120 and the front connecting plate 130. When the first collision energy absorbing assembly 100 collides and is compressed, the intermediate plate 110, the rear connecting plate 120 and the front connecting plate 130 generate deformation energy absorption to buffer the impact force, thereby protecting the safety of the driver and passengers.

[0028] The second collision energy absorbing component 200 is located at the front end of the first collision energy absorbing component 100, and includes a curved baffle 210, three bosses 220 installed on the front side wall of the curved baffle 210, and three springs 230 located on the rear side wall of the curved baffle 210. The curved baffle 210 has a first arc surface 211 at both ends. The middle position of the curved baffle 210 protrudes away from the first collision energy absorbing component 100 and forms a second arc surface 212. A middle boss 220 is located at the center of the second arc surface 212. The other two bosses 220 are symmetrically arranged on the front side wall of the curved baffle 210 with the middle boss 220 as the center. A buffer groove 221 is opened at the corresponding position of the rear side wall of the curved baffle 210 and the boss 220. The front end of the spring 230 abuts against the inside of the buffer groove 221, and the tail end of the spring 230 abuts against the front side wall of the first collision energy absorbing component 100. The second collision energy absorbing component 200 The bolt 240 also includes a bolt 240, which passes through the spring 230, the curved baffle 210, the front connecting plate 130, the middle plate 110 and the rear connecting plate 120 in sequence. The end of the bolt 240 extending out of the side wall of the spring 230 has a first shaft retaining ring 241, and the end of the bolt 240 extending out of the side wall of the rear connecting plate 120 has a second shaft retaining ring 242. When the curved baffle 210 collides and is compressed, the curved baffle 210 moves toward the front connecting plate 130, and the curved baffle 210 squeezes the spring 230. The spring 230 is compressed and deformed to produce an energy absorption effect, thereby buffering the impact force exerted on the curved baffle 210. As the buffering ends, the spring 230 rebounds and pushes the curved baffle 210 away from the front connecting plate 130 until the second shaft retaining ring 242 abuts against the side wall of the rear connecting plate 120, and the first shaft retaining ring 241 abuts against the side wall of the boss 220, thereby limiting the curved baffle 210.

[0029] The vehicle frame 300 is connected to the rear side wall of the first collision energy absorbing assembly 100, first connecting holes 111 are provided at both ends of the middle plate 110, second connecting holes 310 are provided at positions of the vehicle frame 300 corresponding to the first connecting holes 111, and the first collision energy absorbing assembly 100 further comprises a locating pin 140, which passes through the first connecting hole 111 and the second connecting hole 310. By abutting both ends of the middle plate 110 against the vehicle frame 300, aligning the second connecting hole 310 with the corresponding first connecting hole 111, and passing the locating pin 140 through the middle plate 110 and the second connecting hole 310, the first collision energy absorbing assembly 100 is connected to the front of the vehicle frame 300, so as to facilitate the disassembly and installation of the first collision energy absorbing assembly 100.

[0030] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy absorbing bumper device, characterized in that: include: A first collision energy absorbing component (100); The second collision energy absorbing component (200) is located at the front end of the first collision energy absorbing component (100), and comprises a curved baffle (210), three bosses (220) installed on the front side wall of the curved baffle (210), and three springs (230) located on the rear side wall of the curved baffle (210), wherein the two ends of the curved baffle (210) have first curved surfaces (211), the middle position of the curved baffle (210) protrudes in a direction away from the first collision energy absorbing component (100) and forms a second curved surface (212), and the middle One of the bosses (220) is located at the center of the second arc-shaped surface (212), and the other two bosses (220) are symmetrically arranged on the front side wall of the curved baffle (210) with the middle boss (220) as the center; a buffer groove (221) is provided on the rear side wall of the curved baffle (210) at a position corresponding to the boss (220); the front end of the spring (230) abuts against the inside of the buffer groove (221), and the rear end of the spring (230) abuts against the front side wall of the first collision energy absorbing component (100); A vehicle frame (300) is connected to the rear side wall of the first collision energy absorbing component (100).

2. The energy absorbing bumper device according to claim 1, characterized in that: The first collision energy absorbing component (100) comprises an intermediate plate (110), a rear connecting plate (120) welded to the rear side wall of the intermediate plate (110), and a front connecting plate (130) welded to the front side wall of the intermediate plate (110); three positioning grooves (131) are provided on the side wall of the front connecting plate (130) at positions corresponding to the spring (230); and the rear end of the spring (230) abuts against the side wall of the positioning groove (131).

3. The energy absorbing bumper device according to claim 2, characterized in that: The middle plate (110) is provided with first connection holes (111) at both ends, and the frame (300) is provided with second connection holes (310) at positions corresponding to the first connection holes (111).

4. The energy absorbing bumper device according to claim 3, characterized in that: The first collision energy absorbing component (100) further comprises a positioning pin (140), wherein the positioning pin (140) passes through the first connecting hole (111) and the second connecting hole (310).

5. The energy absorbing bumper device according to claim 4, characterized in that: The second collision energy absorption component (200) also includes a bolt (240), and the bolt (240) passes through the spring (230), the curved baffle (210), the front connecting plate (130), the middle plate (110) and the rear connecting plate (120) in sequence; one end of the bolt (240) extending out of the side wall of the spring (230) has a first shaft retaining ring (241), and one end of the bolt (240) extending out of the side wall of the rear connecting plate (120) has a second shaft retaining ring (242).

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