CN110816452A - Adjustable automobile collision energy absorption device - Google Patents
Adjustable automobile collision energy absorption device Download PDFInfo
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- CN110816452A CN110816452A CN201911169556.2A CN201911169556A CN110816452A CN 110816452 A CN110816452 A CN 110816452A CN 201911169556 A CN201911169556 A CN 201911169556A CN 110816452 A CN110816452 A CN 110816452A
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- energy absorption
- energy
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- outer sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
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Abstract
The invention discloses an adjustable automobile collision energy absorption device, which comprises an anti-collision beam, an automobile body cross beam, a central hinge seat, hydraulic buffers and a first elastic energy absorption mechanism, wherein the output ends of two hydraulic buffers are respectively and fixedly connected with adjusting connecting rod assemblies, the other ends of the two adjusting connecting rod assemblies are respectively and fixedly connected with lower sliding blocks, the two lower sliding blocks are symmetrical about the central hinge seat, the two lower sliding blocks are respectively and slidably connected to the automobile body cross beam, the bottom surfaces of the lower sliding blocks are fixedly provided with first friction plates, the automobile body cross beam is fixedly provided with second friction plates corresponding to the first friction plates, the lower sliding blocks are fixedly provided with a hinge support and a second elastic energy absorption mechanism, the hinge support is hinged with a support arm, the other ends of the support arms are fixedly hinged to the anti-collision beam, the free end of the second elastic energy absorption; the three-stage energy absorption device can realize three-stage energy absorption effect, the structure of the device is not damaged in the energy absorption process, the maintenance cost is lower, the device can adapt to different vehicle types, and the universality is high.
Description
Technical Field
The invention relates to an adjustable automobile collision energy absorption device.
Background
At present, a vehicle is mainly provided with a crumple type energy absorption box on a vehicle longitudinal beam, and the energy absorption box is crumpled and deformed to absorb impact energy when the vehicle is longitudinally collided. But the problem that the single-stage energy absorption effect is poor is not maintained, and simultaneously, because the energy absorption size of the collapse type energy absorption box is fixed, the vehicle with different self weights of the vehicle body needs to be independently designed, so that the specification is various, and the universality is poor.
Disclosure of Invention
The invention aims to overcome the defects and provide an adjustable automobile collision energy absorption device.
In order to achieve the purpose, the invention adopts the following specific scheme:
an adjustable automobile collision energy absorption device comprises an anti-collision beam, an automobile body cross beam, a central hinging seat fixed in the middle of the automobile body cross beam, two hydraulic buffers symmetrically hinged at two ends of the central hinging seat, and a first elastic energy absorption mechanism fixed in the middle of the central hinging seat, wherein the free end of the first elastic energy absorption mechanism is abutted against the anti-collision beam, the output ends of the two hydraulic buffers are respectively and fixedly connected with adjusting connecting rod assemblies, the other ends of the two adjusting connecting rod assemblies are respectively and fixedly connected with lower sliding blocks, the adjusting connecting rod assemblies are used for adjusting the positions of the lower sliding blocks, the two lower sliding blocks are symmetrical about the central hinging seat, the two lower sliding blocks are respectively and slidably connected on the automobile body cross beam, the bottom surface of each lower sliding block is fixedly provided with a first friction plate, a second friction plate is fixed on the automobile body cross beam corresponding to the first friction plate, and a hinging, the hinged support is hinged with a supporting arm, the other end of the supporting arm is fixedly hinged to the anti-collision beam, the free end of the second elastic energy absorption mechanism is fixed to an upper sliding block, and the upper sliding block is connected to the anti-collision beam in a sliding mode.
Wherein, the hydraulic buffer comprises an outer tube with one sealed end, an inner tube with one sealed end, a piston rod and a return spring, the other end of the inner tube extends into the outer tube, one end of the inner tube is in sealing fit with the other end of the outer tube, the other end of the inner tube is fixed with a valve baffle, the diameter of the valve baffle is larger than the outer diameter of the inner tube, a sealed cavity is formed among the inner tube, the outer tube and the valve baffle, the piston rod comprises a plug part and a rod part which is integrally formed with the plug part, the plug part is arranged in the inner tube and divides the inner tube into a rod cavity and a rodless cavity, the free end of the rod part penetrates through the valve baffle and the outer tube along the axial direction and then is fixedly connected with one end of an adjusting connecting rod component, one end of the outer tube is provided with an oil return channel which leads the cavity to be communicated with the, one end of the inner pipe is hinged on the central hinge seat.
The adjusting connecting rod assembly comprises a forward threaded rod and a reverse threaded rod, one end of the reverse threaded rod is in threaded connection with the free end of the rod portion of the piston rod, the other end of the reverse threaded rod is in threaded connection with one end of the forward threaded rod, and the other end of the forward threaded rod is hinged to the hinged support.
The adjusting connecting rod assembly further comprises a limiting nut, and the limiting nut is used for limiting the movement of the reverse threaded rod.
The energy absorbing mechanism comprises a first outer sleeve, a first inner sleeve and a first energy absorbing spring, the bottom of the first outer sleeve is fixed on a center hinge seat, the first inner sleeve is movably sleeved in the first outer sleeve, the free end of the first inner sleeve abuts against the anti-collision beam, one end of the first energy absorbing spring is located in the first inner sleeve, the other end of the first energy absorbing spring is located in the first outer sleeve, and two ends of the first energy absorbing spring abut against the first outer sleeve and the first inner sleeve respectively.
The second elastic energy-absorbing mechanism comprises a second outer sleeve, a second inner sleeve and a second energy-absorbing spring, the bottom of the second outer sleeve is fixed on the lower sliding block, the free end of the second inner sleeve is fixed on the upper sliding block, the second inner sleeve is movably sleeved in the second outer sleeve, one end of the second energy-absorbing spring is located in the second inner sleeve, the other end of the second energy-absorbing spring is located in the second outer sleeve, and two ends of the second energy-absorbing spring abut against the second outer sleeve and the second inner sleeve respectively.
The invention has the beneficial effects that: through the structure, when the automobile collides, a three-level energy absorption effect can be realized, the structure is safer, the collision safety requirement is met, the structure of the automobile is not damaged in the energy absorption process, the automobile does not need to be maintained or replaced after collision, the maintenance cost is lower, the energy absorption size of the whole energy absorption device is adjustable, different energy absorption effects cannot be obtained, and the automobile type energy absorption device is suitable for different automobile types and has strong universality.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged partial schematic view at I of FIG. 2;
FIG. 4 is a cross-sectional view of a hydraulic damper according to the present invention;
description of reference numerals: 1-an anti-collision beam; 2-a body cross member; 3-a central articulated seat; 4-a hydraulic buffer; 41-outer tube; 42-an inner tube; 43-a piston rod; 44-a return spring; 45-valve flap; 46-a cavity; 47-oil return passage; 48-ball valve core; 49-oil outlet; 5-a first elastic energy-absorbing mechanism; 6-adjusting the connecting rod assembly; 61-positive threaded rod; 62-reverse threaded rod; 63-a limit nut; 7-lower slide block; 8-a first friction plate; 9-a second friction plate; 10-a hinged bracket; 20-a second elastic energy-absorbing mechanism; 30-a support arm; 40-upper sliding block.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1 to 4, the adjustable automobile collision energy absorption device according to the embodiment includes an anti-collision beam 1, an automobile body cross beam 2, a central hinge base 3 fixed at the middle of the automobile body cross beam 2, two hydraulic buffers 4 symmetrically hinged at two ends of the central hinge base 3, and a first elastic energy absorption mechanism 5 fixed at the middle of the central hinge base 3, wherein a free end of the first elastic energy absorption mechanism 5 abuts against the anti-collision beam 1, output ends of the two hydraulic buffers 4 are respectively and fixedly connected with an adjusting link assembly 6, the other ends of the two adjusting link assemblies 6 are respectively and fixedly connected with a lower slider 7, the adjusting link assembly 6 is used for adjusting the position of the lower slider 7, the two lower sliders 7 are symmetrical with respect to the central hinge base 3, the two lower sliders 7 are respectively and slidably connected to the automobile body cross beam 2, and a first friction plate 8 is fixed on the bottom surface of the lower slider, a second friction plate 9 is fixed on the vehicle body cross beam 2 corresponding to the first friction plate 8, a hinged support 10 and a second elastic energy absorption mechanism 20 are fixed on the lower sliding block 7, the hinged support 10 is hinged to a support arm 30, the other end of the support arm 30 is fixedly hinged to the anti-collision beam 1 through a hinged block, the free end of the second elastic energy absorption mechanism 20 is fixed on an upper sliding block 40, and the upper sliding block 40 is connected to the anti-collision beam 1 in a sliding mode.
This embodiment an automobile collision energy-absorbing device with adjustable, first elasticity energy-absorbing mechanism 5 includes first outer sleeve, first inner skleeve and first energy-absorbing spring, and the bottom of first outer sleeve is fixed on articulated seat 3 in center, first inner skleeve movable sleeve is located in the first outer sleeve, the free end top of first inner skleeve is leaned on anticollision roof beam 1, the one end of first energy-absorbing spring is located first inner skleeve, the other end of first energy-absorbing spring is located first outer sleeve, the both ends of first energy-absorbing spring are leaned on first outer sleeve and first inner skleeve respectively in the top. When collision happens, the first inner sleeve compresses the first energy absorption spring, the first energy absorption spring is deformed under pressure, part of impact energy is converted into elastic potential energy of the first energy absorption spring, and when collision is finished, the first energy absorption spring recovers elastic deformation to drive the first inner sleeve to reset.
This embodiment an automobile collision energy-absorbing device with adjustable, second elasticity energy-absorbing mechanism 20 includes second outer sleeve, second inner skleeve and second energy-absorbing spring, and the bottom of the outer sleeve of second is fixed on slider 7 down, the free end of second inner skleeve is fixed on slider 40, the outer sleeve of second is located to second inner skleeve activity cover, the one end of second energy-absorbing spring is located the second inner skleeve, the other end of second energy-absorbing spring is located the outer sleeve of second, the both ends of second energy-absorbing spring are leaned on respectively on the outer sleeve of second and second inner skleeve. When collision happens, the second inner sleeve compresses the second energy-absorbing spring, the second energy-absorbing spring is pressed to deform, a part of impact energy is converted into elastic potential energy of the second energy-absorbing spring, and when the collision is finished, the second energy-absorbing spring restores to elastically deform to drive the second inner sleeve to reset.
The working mode of the embodiment is as follows: when an automobile is impacted, the anti-collision beam 1 is firstly impacted, the anti-collision beam 1 can compress the first elastic energy absorption mechanism 5 and the two second elastic energy absorption mechanisms 20, and the first elastic energy absorption mechanism 5 and the two second elastic energy absorption mechanisms 20 convert part of the impact energy into elastic potential energy to realize primary energy absorption; meanwhile, the collision-proof beam 1 is impacted to drive the supporting arm 30 to swing, the supporting arm 30 pushes the lower sliding blocks 7 at two sides of the central hinged seat 3 to move outwards, the lower sliding blocks 7 are stressed by the second elastic energy absorption mechanism 20, so that a great friction force exists between the first friction plate 8 and the second friction plate 9, in the sliding process of the lower sliding blocks 7, a part of impact energy is converted into heat energy through friction action, secondary energy absorption is realized, and according to a sliding friction force calculation formula F = muN (wherein muP is a dynamic friction factor, N is a positive pressure) and an elastic force F = KX (wherein K is a stiffness coefficient of a spring, and X is an elongation of the spring), the friction force between the first friction plate 8 and the second friction plate 9 is continuously increased along with continuous compression of the second elastic energy absorption mechanism 20, and the absorbed energy is also continuously increased; when the two lower sliders 7 slide outwards, the lower sliders 7 drive the hydraulic buffer 4 to work through the adjusting connecting rod assembly 6, the hydraulic buffer 4 provides a buffering effect, and a part of impact energy is converted into pressure potential energy to achieve three-stage energy absorption.
The position of the lower sliding block 7 is adjusted by adjusting the connecting rod assembly 6, so that the distance between the anti-collision beam 1 and the vehicle body cross beam 2 is changed, the pre-pressing force of the first elastic energy-absorbing mechanism 5 and the second elastic energy-absorbing mechanism 20 is further changed, and the purpose of absorbing energy of the whole energy-absorbing device is achieved, so that the energy-absorbing device is suitable for different vehicle types.
The adjustable energy-absorbing device for automobile collision in this embodiment is shown in fig. 4, the hydraulic buffer 4 includes an outer tube 41 with one sealed end, an inner tube 42 with one sealed end, a piston rod 43 and a return spring 44, the other end of the inner tube 42 extends into the outer tube 41, one end of the inner tube 42 is in sealing fit with the other end of the outer tube 41, the other end of the inner tube 42 is fixed with a valve baffle 45, the diameter of the valve baffle 45 is greater than the outer diameter of the inner tube 42, a sealed cavity 46 is formed between the inner tube 42, the outer tube 41 and the valve baffle 45, the piston rod 43 includes a plug portion and a rod portion integrally formed with the plug portion, the plug portion is arranged in the inner tube 42 and divides the inner tube 42 into a rod cavity and a rodless cavity, the free end of the rod portion axially penetrates through the valve baffle 45 and the outer tube 41 and then is fixedly connected with one end of the adjusting link assembly 6, one end of the outer tube 41 is provided with an oil return channel 47 communicating, a ball valve core 48 is arranged in the oil return channel 47, an oil outlet 49 communicated with the cavity 46 is arranged on the inner pipe 42, and one end of the inner pipe 42 is hinged on the central hinged seat 3. Specifically, hydraulic oil is stored in the inner pipe 42, when an automobile collides, the two lower sliding blocks 7 move back to back and slide outwards, the rod part of the piston rod 43 is driven to extend out by the adjusting connecting rod assembly 6, so that the oil pressure in the rod cavity of the inner pipe 42 is increased to form high-pressure oil, the high-pressure oil flows out of the oil outlet 49 into the cavity 46, a part of impact energy is converted into pressure potential energy of the hydraulic oil, after the collision is finished, the rod part of the piston rod 43 returns under the action of the return spring 44, and the hydraulic oil in the cavity 46 enters the oil return channel 47 and abuts against the ball valve core 48 and then flows into the inner pipe 42. Preferably, the diameter of the oil outlet hole 49 is much smaller than that of the oil return passage 47, so that when oil is discharged, high-pressure oil is heated when flowing out through the oil outlet hole 49, and a part of impact energy is converted into heat energy, thereby improving the energy absorption effect of the hydraulic buffer 4.
As shown in fig. 2, the adjusting link assembly 6 includes a forward threaded rod 61 and a reverse threaded rod 62, one end of the reverse threaded rod 62 is connected with the free end of the rod portion of the piston rod 43, the other end of the reverse threaded rod 62 is connected with one end of the forward threaded rod 61, and the other end of the forward threaded rod 61 is hinged to the hinge bracket 10; when the position of the lower sliding block 7 needs to be adjusted, the reverse threaded rod 62 only needs to be rotated, the reverse threaded rod 62 and the forward threaded rod 61 generate relative displacement, the position of the lower sliding block 7 is further changed, the energy absorption size of the whole energy absorption device is changed, the structure is simple, and the adjusting operation is flexible.
As shown in fig. 2, the adjusting link assembly 6 further includes a limit nut 63, and the limit nut 63 is used for limiting the movement of the reverse threaded rod 62; when the position of the lower sliding block 7 does not need to be adjusted, the movement of the reverse threaded rod 62 is limited by the limiting nut 63, so that the relative motion between the reverse threaded rod 62 and the forward reverse threaded rod 62 is prevented, the structure is firmer, and when the position of the lower sliding block 7 needs to be adjusted, only the limiting nut 63 needs to be screwed, and then the reverse threaded rod 62 is loosened; specifically, a stopper nut 63 is screwed on one end of the forward threaded rod 61, and a stopper nut 63 is screwed on one end of the reverse threaded rod 62, thereby achieving the purpose of restricting the movement of the reverse threaded rod 62.
Through the structure, when the automobile collides, a three-level energy absorption effect can be realized, the structure is safer, the collision safety requirement is met, the structure of the automobile is not damaged in the energy absorption process, the automobile does not need to be maintained or replaced after collision, the maintenance cost is lower, the energy absorption size of the whole energy absorption device is adjustable, different energy absorption effects cannot be obtained, and the automobile type energy absorption device is suitable for different automobile types and has strong universality.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (7)
1. The adjustable automobile collision energy absorption device is characterized by comprising an anti-collision beam (1), an automobile body cross beam (2), a central hinging seat (3) fixed in the middle of the automobile body cross beam (2), two hydraulic buffers (4) symmetrically hinged to two ends of the central hinging seat (3) and a first elastic energy absorption mechanism (5) fixed in the middle of the central hinging seat (3), wherein the free end of the first elastic energy absorption mechanism (5) abuts against the anti-collision beam (1), the output ends of the two hydraulic buffers (4) are respectively and fixedly connected with adjusting connecting rod assemblies (6), the other ends of the two adjusting connecting rod assemblies (6) are respectively and fixedly connected with lower sliding blocks (7), the adjusting connecting rod assemblies (6) are used for adjusting the positions of the lower sliding blocks (7), and the two lower sliding blocks (7) are symmetrical about the central hinging seat (3), two lower sliding blocks (7) are respectively connected to a vehicle body cross beam (2) in a sliding mode, a first friction plate (8) is fixed to the bottom surface of each lower sliding block (7), a second friction plate (9) is fixed to each vehicle body cross beam (2) corresponding to the first friction plate (8), an articulated support (10) and a second elastic energy absorption mechanism (20) are fixed to each lower sliding block (7), the articulated support (10) is articulated with a support arm (30), the other end of each support arm (30) is fixedly articulated to an anti-collision beam (1), the free end of each second elastic energy absorption mechanism (20) is fixed to one upper sliding block (40), and each upper sliding block (40) is connected to the anti-collision beam (1) in a sliding mode.
2. The adjustable automobile collision energy absorption device according to claim 1, wherein the hydraulic buffer (4) comprises an outer tube (41) with one sealed end, an inner tube (42) with one sealed end, a piston rod (43) and a return spring (44), the other end of the inner tube (42) extends into the outer tube (41), one end of the inner tube (42) is in sealing fit with the other end of the outer tube (41), a valve baffle (45) is fixed at the other end of the inner tube (42), the diameter of the valve baffle (45) is larger than the outer diameter of the inner tube (42), a sealed cavity (46) is formed among the inner tube (42), the outer tube (41) and the valve baffle (45), the piston rod (43) comprises a plug part and a rod part integrally formed with the plug part, the plug part is arranged in the inner tube (42) and divides the inner tube (42) into a rod cavity and a rodless cavity, the free end of pole portion runs through valve baffle (45) and outer tube (41) back and the one end fixed connection of adjusting link assembly (6) along the axial, one of outer tube (41) is served and is equipped with oil return channel (47) that have the pole chamber intercommunication that makes cavity (46) and inner tube (42), be equipped with ball case (48) in oil return channel (47), be equipped with oil outlet (49) on inner tube (42), the one end of inner tube (42) articulates on articulated seat (3) in center.
3. The adjustable automobile collision energy absorption device is characterized in that the adjusting connecting rod assembly (6) comprises a forward threaded rod (61) and a reverse threaded rod (62), one end of the reverse threaded rod (62) is in threaded connection with the free end of the rod part of the piston rod (43), the other end of the reverse threaded rod (62) is in threaded connection with one end of the forward threaded rod (61), and the other end of the forward threaded rod (61) is hinged to the hinge bracket (10).
4. The adjustable automobile collision energy absorption device is characterized in that the adjusting connecting rod assembly (6) further comprises a limiting nut (63), and the limiting nut (63) is used for limiting the movement of the reverse threaded rod (62).
5. The adjustable automobile collision energy absorption device according to claim 1, wherein the first elastic energy absorption mechanism (5) comprises a first outer sleeve, a first inner sleeve and a first energy absorption spring, the bottom of the first outer sleeve is fixed on the central hinged seat (3), the first inner sleeve is movably sleeved in the first outer sleeve, the free end of the first inner sleeve abuts against the anti-collision beam (1), one end of the first energy absorption spring is located in the first inner sleeve, the other end of the first energy absorption spring is located in the first outer sleeve, and two ends of the first energy absorption spring respectively abut against the first outer sleeve and the first inner sleeve.
6. The adjustable automobile collision energy-absorbing device according to claim 1, wherein the second elastic energy-absorbing mechanism (20) comprises a second outer sleeve, a second inner sleeve and a second energy-absorbing spring, the bottom of the second outer sleeve is fixed on the lower slider (7), the free end of the second inner sleeve is fixed on the upper slider (40), the second inner sleeve is movably sleeved in the second outer sleeve, one end of the second energy-absorbing spring is located in the second inner sleeve, the other end of the second energy-absorbing spring is located in the second outer sleeve, and two ends of the second energy-absorbing spring respectively abut against the second outer sleeve and the second inner sleeve.
7. The adjustable automobile collision energy-absorbing device according to claim 1, wherein the second elastic energy-absorbing mechanism (20) comprises a second outer sleeve, a second inner sleeve and a second energy-absorbing spring, the bottom of the second outer sleeve is fixed on the lower slider (7), the free end of the second inner sleeve is fixed on the upper slider (40), the second inner sleeve is movably sleeved in the second outer sleeve, one end of the second energy-absorbing spring is located in the second inner sleeve, the other end of the second energy-absorbing spring is located in the second outer sleeve, and two ends of the second energy-absorbing spring respectively abut against the second outer sleeve and the second inner sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169556.2A CN110816452A (en) | 2019-11-26 | 2019-11-26 | Adjustable automobile collision energy absorption device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911169556.2A CN110816452A (en) | 2019-11-26 | 2019-11-26 | Adjustable automobile collision energy absorption device |
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| Publication Number | Publication Date |
|---|---|
| CN110816452A true CN110816452A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911169556.2A Withdrawn CN110816452A (en) | 2019-11-26 | 2019-11-26 | Adjustable automobile collision energy absorption device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110816452A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347992A (en) * | 2020-03-30 | 2020-06-30 | 西南科技大学 | Intelligent anti-collision energy absorption system and method for automobile |
| CN112248954A (en) * | 2020-10-19 | 2021-01-22 | 嘉兴沃瑞科技有限公司 | Self-buffering automobile anti-collision beam |
| CN114689343A (en) * | 2022-04-14 | 2022-07-01 | 中国汽车工程研究院股份有限公司 | Deceleration system for collision test |
-
2019
- 2019-11-26 CN CN201911169556.2A patent/CN110816452A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347992A (en) * | 2020-03-30 | 2020-06-30 | 西南科技大学 | Intelligent anti-collision energy absorption system and method for automobile |
| CN112248954A (en) * | 2020-10-19 | 2021-01-22 | 嘉兴沃瑞科技有限公司 | Self-buffering automobile anti-collision beam |
| CN114689343A (en) * | 2022-04-14 | 2022-07-01 | 中国汽车工程研究院股份有限公司 | Deceleration system for collision test |
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Application publication date: 20200221 |