CN104999980A - Sleeve type shape memory alloy car crash energy absorption box - Google Patents
Sleeve type shape memory alloy car crash energy absorption box Download PDFInfo
- Publication number
- CN104999980A CN104999980A CN201510498647.6A CN201510498647A CN104999980A CN 104999980 A CN104999980 A CN 104999980A CN 201510498647 A CN201510498647 A CN 201510498647A CN 104999980 A CN104999980 A CN 104999980A
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- memory alloy
- absorption box
- sleeve
- energy
- inner 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
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to a sleeve type shape memory alloy car crash energy absorption box, and belongs to the technical field of car safety. An inner sleeve and an outer sleeve of the energy absorption box are in sleeving connection to form an energy absorption box body; the front end of the inner sleeve is fixedly connected with a front end plate of the inner sleeve; the rear end of the outer sleeve is fixedly connected with a rear end plate of the outer sleeve; a guide stud is fixedly connected to the rear end plate of the outer sleeve; the rear end plate of the inner sleeve is connected with the guide stud in a sliding manner; a nut is in threaded connection with the guide stud; one end of a shape memory alloy is fixedly connected with a front end cover of the outer sleeve, and the other end of the shape memory alloy is fixedly connected with the rear end plate of the inner sleeve. The sleeve type shape memory alloy car crash energy absorption box has the advantages that the structure is novel, the energy absorption effect can be improved effectively, the maintaining cost is reduced, and the safety of passengers in a passenger compartment is ensured.
Description
Technical field
The present invention relates to a kind of sleeve-type marmem auto against energy-absorption box, belong to technical field of vehicle safety.
Background technology
Along with the raising of people's living standard, automobile pollution is also more and more higher, and the probability that traffic accident simultaneously occurs is also increasing, and automotive safety seems particularly important.When automobile collides, in order to ensure that occupant has enough living spaces, require that automotive front safety component can absorb enough collision energies.
Vehicle energy absorption box, as body forward structure main security parts, have suitable rigidity, intensity and rational structure design, fully can absorb collision energy according to actual collision situation.Traditional energy-absorption box utilizes structure conquassation to produce plastic deformation to realize crash energy absorption, as Chinese patent CN103909888A, CN104590178A, all adopts crushing type single-stage endergonic structure.After collision occurs, energy-absorption box body produces expendable plastic deformation, must keep in repair, causing waste of material and maintenance cost to remain high by changing parts.Single-stage endergonic structure energy-absorbing effect is limited in addition, greatly reduces the protected effect to vehicle and occupant.
Marmem, as typical intellectual material, has the features such as high damping, super-elasticity and withstanding corrosion.At least high than the traditional metal materials order of magnitude of damping capacity of marmem.During the load that withstands shocks, the martensite dielectric loss coefficient of marmem inside can reach 10%.
Summary of the invention
The invention provides a kind of sleeve-type marmem auto against energy-absorption box, high to solve existing energy-absorption box maintenance cost, the problem of collision energy-absorbing limited efficiency.
The technical scheme that the present invention takes is: energy-absorption box inner sleeve and energy-absorption box outer sleeve are socketed composition energy-absorption box body mutually, inner sleeve front end is fixedly connected with inner sleeve front end-plate, outer sleeve rear end is fixedly connected with outer sleeve lower back panel, outer sleeve lower back panel is fixedly connected with guiding screw pole, inner sleeve lower back panel and guiding screw pole sliding block joint, nut is threaded with guiding screw pole, and shape-memory alloy wire one end is fixedly connected with outer sleeve front end cover, the other end is fixedly connected with inner sleeve lower back panel.
Described shape-memory alloy wire is in tensioning state under the regulating action of nut.
Described shape-memory alloy wire is NiTi shape-memory alloy wire, or copper base shape memory alloy wire, iron-base marmem silk.
Described shape-memory alloy wire is even or be symmetrically arranged in around inner sleeve.
Described shape-memory alloy wire identical length etc.
The cross sectional shape of described inner sleeve and outer sleeve is circular, or arbitrary polygon.
Advantage of the present invention is novel structure, the sleeve-type auto against energy-absorption box of described Shape-based interpolation memorial alloy functional material, inner sleeve and outer sleeve overlap mutually, and are connected with shape-memory alloy wire between inner sleeve and outer sleeve, effectively can improve energy-absorbing effect, reduce maintenance cost.When low speed collision, shape-memory alloy wire is stretched energy-absorbing, thus the parts in protection machinery space do not damage, and ensures the passenger safety in crew module simultaneously; In maintenance process, only need heated shape memory alloy silk, energy-absorption box just can restore to the original state, and greatly reduces energy-absorption box maintenance cost; During high-speed crash, shape-memory alloy wire has first been stretched one-level energy absorbing, dump energy completes Secondary energy by sleeve conquassation and absorbs, the problems such as maintenance difficult, energy absorbing efficiency that traditional single stage vehicle energy absorption box exists be limited are overcome by two-stage endergonic structure, substantially increase energy-absorbing effect, ensure occupant safety in crew module.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the installing condition schematic diagram of the present invention on vehicle frame;
Fig. 3 is relative motion schematic diagram of the present invention;
Fig. 4 is one-level energy absorbing end position schematic diagram of the present invention;
Fig. 5 is shape-memory alloy wire distribution schematic diagram of the present invention, and figure China and foreign countries barrel forward end lid is rectangle, and shape-memory alloy wire is 10;
Fig. 6 is shape-memory alloy wire distribution schematic diagram of the present invention, and figure China and foreign countries barrel forward end lid is circular, and shape-memory alloy wire is 12.
Detailed description of the invention
Energy-absorption box inner sleeve 1 and energy-absorption box outer sleeve 2 be socket composition energy-absorption box body mutually, inner sleeve 1 front end is fixedly connected with inner sleeve front end-plate 4, outer sleeve 2 rear end is fixedly connected with outer sleeve lower back panel 5, outer sleeve lower back panel 5 is fixedly connected with guiding screw pole 7, inner sleeve lower back panel 8 and guiding screw pole 7 sliding block joint, nut 3 is threaded with guiding screw pole 7, and shape-memory alloy wire 6 one end is fixedly connected with outer sleeve front end cover 9, the other end is fixedly connected with inner sleeve lower back panel 8;
Described shape-memory alloy wire 6 is in tensioning state under the regulating action of nut 3;
Described shape-memory alloy wire is NiTi shape-memory alloy wire, or copper base shape memory alloy wire, iron-base marmem silk;
Described shape-memory alloy wire 6 is even or be symmetrically arranged in inner sleeve 1 around;
Described shape-memory alloy wire identical length etc.;
The cross sectional shape of described inner sleeve 1 and outer sleeve 2 is circular, or arbitrary polygon.
Inner sleeve barrel also can be provided with induction groove and reinforced rib, is used for strengthening intensity.
Inner sleeve is connected by shape-memory alloy wire with outer sleeve, and the relative motion in opposite directions of inner sleeve and outer sleeve can be exchanged into the extensional motion of shape-memory alloy wire.
Be provided with guiding screw pole between inner sleeve and outer sleeve, the position of inner sleeve and outer sleeve and the accuracy of direction of relative movement can be ensured, the tensioning degree of adjustable shape memory alloy wire can also be carried out by nut.
When automobile collides, will there is relative motion in opposite directions in described auto against energy-absorption box inner sleeve 1 and auto against energy-absorption box outer sleeve 2, thus described NiTi shape-memory alloy wire 6 is stretched carry out one-level energy-absorbing; In maintenance process, only need heat NiTi shape-memory alloy wire, energy-absorption box just can be made to restore to the original state, greatly reduce maintenance cost; During high-speed crash, after NiTi shape-memory alloy wire has stretched one-level energy-absorbing, also further auto against energy-absorption box inner sleeve 1 described in conquassation and auto against energy-absorption box outer sleeve 2 can absorb remaining collision energy, realize secondary energy-absorbing, greatly improve energy-absorbing effect, ensure that being connected to energy-absorption box longeron is not below damaged, thus guarantee that other parts are not damaged, simultaneously for passenger provides enough living spaces, ensure the safety of occupant.
Claims (6)
1. a sleeve-type marmem auto against energy-absorption box, it is characterized in that: energy-absorption box inner sleeve and energy-absorption box outer sleeve are socketed composition energy-absorption box body mutually, inner sleeve front end is fixedly connected with inner sleeve front end-plate, outer sleeve rear end is fixedly connected with outer sleeve lower back panel, outer sleeve lower back panel is fixedly connected with guiding screw pole, inner sleeve lower back panel and guiding screw pole sliding block joint, nut is threaded with guiding screw pole, and shape-memory alloy wire one end is fixedly connected with outer sleeve front end cover, the other end is fixedly connected with inner sleeve lower back panel.
2. a kind of sleeve-type marmem auto against energy-absorption box according to claim 1, is characterized in that: described shape-memory alloy wire is in tensioning state under the regulating action of nut.
3. a kind of sleeve-type marmem auto against energy-absorption box according to claim 1, is characterized in that: described shape-memory alloy wire is NiTi shape-memory alloy wire, or copper base shape memory alloy wire, iron-base marmem silk.
4. a kind of sleeve-type marmem auto against energy-absorption box according to claim 1, is characterized in that: described shape-memory alloy wire is even or be symmetrically arranged in around inner sleeve.
5. a kind of sleeve-type marmem auto against energy-absorption box according to claim 1, is characterized in that: described shape-memory alloy wire identical length etc.
6. a kind of sleeve-type marmem auto against energy-absorption box according to claim 1, is characterized in that: the cross sectional shape of described inner sleeve and outer sleeve is circular, or arbitrary polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510498647.6A CN104999980B (en) | 2015-08-14 | 2015-08-14 | Sleeve type shape memory alloy car crash energy absorption box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510498647.6A CN104999980B (en) | 2015-08-14 | 2015-08-14 | Sleeve type shape memory alloy car crash energy absorption box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104999980A true CN104999980A (en) | 2015-10-28 |
| CN104999980B CN104999980B (en) | 2017-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510498647.6A Active CN104999980B (en) | 2015-08-14 | 2015-08-14 | Sleeve type shape memory alloy car crash energy absorption box |
Country Status (1)
| Country | Link |
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| CN (1) | CN104999980B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346489A (en) * | 2015-12-14 | 2016-02-24 | 吉林大学 | Automobile intelligent shape memory alloy energy absorbing structure and control method thereof |
| CN105599715A (en) * | 2016-01-04 | 2016-05-25 | 中国科学院力学研究所 | Impact energy absorption mechanism |
| CN108515930A (en) * | 2017-02-24 | 2018-09-11 | 丰田自动车株式会社 | Longeron apex structure |
| CN109707103A (en) * | 2019-01-24 | 2019-05-03 | 同济大学 | The replaceable coupling beam of Self-resetting shear energy dissipation type |
| CN113978401A (en) * | 2021-12-24 | 2022-01-28 | 常州大连理工大学智能装备研究院 | Anti-collision device for automobile body |
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| CN1693120A (en) * | 2004-05-03 | 2005-11-09 | C.R.F.阿西安尼顾问公司 | Multifunction motor vehicle beam |
| CN2808659Y (en) * | 2005-07-25 | 2006-08-23 | 毛安林 | Elastic bumper for automobile |
| JP2008189156A (en) * | 2007-02-05 | 2008-08-21 | Honda Motor Co Ltd | Car body strength adjusting device of vehicle |
| CN203427725U (en) * | 2013-09-16 | 2014-02-12 | 广东豪美铝业股份有限公司 | Vehicle front anti-collision beam |
| CN204077581U (en) * | 2014-07-21 | 2015-01-07 | 江苏新天洋机械制造有限公司 | Federal bumper |
| CN204161275U (en) * | 2014-10-16 | 2015-02-18 | 慈溪市腾辉汽车零部件有限公司 | Bumper beam for vehicles |
| CN204895363U (en) * | 2015-08-14 | 2015-12-23 | 吉林大学 | Telescopic shape memory alloy car collision energy -absorbing box |
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2015
- 2015-08-14 CN CN201510498647.6A patent/CN104999980B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693120A (en) * | 2004-05-03 | 2005-11-09 | C.R.F.阿西安尼顾问公司 | Multifunction motor vehicle beam |
| CN2808659Y (en) * | 2005-07-25 | 2006-08-23 | 毛安林 | Elastic bumper for automobile |
| JP2008189156A (en) * | 2007-02-05 | 2008-08-21 | Honda Motor Co Ltd | Car body strength adjusting device of vehicle |
| CN203427725U (en) * | 2013-09-16 | 2014-02-12 | 广东豪美铝业股份有限公司 | Vehicle front anti-collision beam |
| CN204077581U (en) * | 2014-07-21 | 2015-01-07 | 江苏新天洋机械制造有限公司 | Federal bumper |
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| CN204895363U (en) * | 2015-08-14 | 2015-12-23 | 吉林大学 | Telescopic shape memory alloy car collision energy -absorbing box |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346489A (en) * | 2015-12-14 | 2016-02-24 | 吉林大学 | Automobile intelligent shape memory alloy energy absorbing structure and control method thereof |
| CN105599715A (en) * | 2016-01-04 | 2016-05-25 | 中国科学院力学研究所 | Impact energy absorption mechanism |
| WO2017117862A1 (en) * | 2016-01-04 | 2017-07-13 | 中国科学院力学研究所 | Impact energy absorption mechanism |
| CN105599715B (en) * | 2016-01-04 | 2018-12-14 | 中国科学院力学研究所 | A kind of impact energy absorber |
| CN108515930A (en) * | 2017-02-24 | 2018-09-11 | 丰田自动车株式会社 | Longeron apex structure |
| CN108515930B (en) * | 2017-02-24 | 2021-11-16 | 丰田自动车株式会社 | Longitudinal beam top end structure |
| CN109707103A (en) * | 2019-01-24 | 2019-05-03 | 同济大学 | The replaceable coupling beam of Self-resetting shear energy dissipation type |
| CN109707103B (en) * | 2019-01-24 | 2021-04-30 | 同济大学 | Self-resetting shearing energy-consumption type replaceable coupling beam |
| CN113978401A (en) * | 2021-12-24 | 2022-01-28 | 常州大连理工大学智能装备研究院 | Anti-collision device for automobile body |
Also Published As
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| CN104999980B (en) | 2017-04-12 |
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