CN201472283U - Cutting thread shear type vehicle collision energy-absorbing device - Google Patents
Cutting thread shear type vehicle collision energy-absorbing device Download PDFInfo
- Publication number
- CN201472283U CN201472283U CN2009203043427U CN200920304342U CN201472283U CN 201472283 U CN201472283 U CN 201472283U CN 2009203043427 U CN2009203043427 U CN 2009203043427U CN 200920304342 U CN200920304342 U CN 200920304342U CN 201472283 U CN201472283 U CN 201472283U
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- thread
- threaded sleeve
- screw rod
- nut
- collision energy
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Abstract
The utility model discloses a cutting thread shear type vehicle collision energy-absorbing device which comprises a threaded sleeve pipe, an impacting screw rod and a nut, wherein an internal thread section is arranged at one end in the threaded sleeve pipe, a through hole section is formed at the other end in the threaded sleeve pipe, one end of the impacting screw rod is sleeved in the threaded sleeve pipe, the other end of the impacting screw rod extends out of the threaded sleeve pipe, the nut is sleeved on the impacting screw rod through a thread, the outer diameter of the nut is larger than the inner diameter of the internal thread section, one end of the nut is supported in the through hole section through a bearing, the other end of the nut extends out of the threaded sleeve pipe, a driving motor fixed on a vehicle body component is arranged close to the threaded sleeve pipe, and an output end of the driving motor is connected with the nut through a transmission mechanism. The cutting thread shear type vehicle collision energy-absorbing device with simple structure and wide application range can ensure that the impacting screw rod can freely stretch according to the expected requirements.
Description
Technical field
The utility model relates to the Vehicle Engineering field, relates in particular to screw thread shearing type collision energy-absorbing device for vehicles.
Background technology
Energy Absorbing Device is widely used in the safe design technology of automobile, traditional Energy Absorbing Device adopts conquassation formula energy-absorbing mechanism, utilize stamping forming metal square beam or metal circular tube to make the collision longeron, absorb collision energy by the flow of metal and the flexing of colliding longeron and headstock place.This structure is not very high to the requirement of layout pattern, but the collision energy-absorbing ability can only be pre-designed, can not adjust; To cause the large area deformation of vehicle body after the collision, the service expenditure height.
The patent No. is that the utility model patent of ZL03124568.4 discloses a kind of screw thread shearing type auto against energy absorption device, it has utilized the fail in shear power of every circle screw thread is the feature of constant substantially, when collision, can the huge kinetic energy of instantaneous absorption, can provide no resilience and pulsation-free resistance to slow down again.But it directly utilizes outside thread on the thread rod to remove to impact negative thread on the threaded sleeve, since the engagement of thread rod and threaded sleeve is two circles or two enclose more than, so initially thrust screw thread power and be the twice that thrusts a circle screw thread power or more than the twice, and be again the impact of face face contact, therefore need just can thrust screw thread much larger than the starting force that thrusts a circle screw thread power in the collision starting stage, this makes that the initial collision acceleration/accel is huge, in automobile high-speed when collision,, driving person holds and can't stand huge moderating process and cause life danger.
The patent No. is that the utility model patent of ZL200710034933.2 discloses a kind of self-adapting device for absorbing impact energy; this utility model has overcome the deficiency in " screw thread shearing type auto against energy absorption device "; impacting on the screw rod by the nut that has been threaded; avoid directly utilizing the outside thread that impacts on the screw rod to remove to impact negative thread on the threaded sleeve; guarantee that the power that only need thrust a circle screw thread in the collision starting stage can start this device; initial acceleration reduces when making collision; during the automobile high-speed collision; moderating process is steady; help protecting occupant's life security; but the flexible propulsion source of this utility model is the motor that is installed on the bumper/spoiler; when the impact screw rod is flexible; under the effect of deadweight; nut and the meshing zone that impacts between the screw rod will produce huge moment of deflection, might cause impacting that stretching of screw rod can't be carried out or power demand is too big.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, applied widely, can guarantee to impact screw rod and require flexible freely screw thread shearing type collision energy-absorbing device for vehicles according to expection.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of screw thread shearing type collision energy-absorbing device for vehicles, comprise threaded sleeve, impact screw rod and nut, an end is an internal thread segment in the described threaded sleeve, the other end is the through hole section, one end of described impact screw rod is set in the threaded sleeve, the other end stretches out outside the threaded sleeve, described nut by thread set in impacting on the screw rod, the external diameter of nut is greater than the internal diameter of internal thread segment, nut one end is supported in the through hole section by bearing, the other end stretches out outside the threaded sleeve, and described threaded sleeve is other to be provided with the drive motor that is fixed on the car body member, and the mouth of described drive motor is connected with nut through transmission device.
Described transmission device comprises first gear and second gear, and the described first gear key is connected on the nut, and described second gear is installed in the mouth of drive motor, second gear and first gear mesh.
End away from nut in the described threaded sleeve is equiped with the back supporting that screw rod is impacted in supporting, and the end that the impact screw rod is positioned at the back supported end is provided with positive stop lug boss.
Described impact screw rod stretches out the outer end installing bumper/spoiler assembly of threaded sleeve, and described bumper/spoiler assembly is provided with waist shaped hole, impacts screw rod and is connected with the bumper/spoiler assembly by waist shaped hole.
Described nut is connected by spline with first gear.
Screw thread on the described threaded sleeve is Acme thread or triangle thread or square thread or saw thread or round thread.
Compared with prior art, advantage of the present utility model is:
One end of nut is stretched out outside the threaded sleeve, simultaneously drive motor is fixed on the other car body member of threaded sleeve, through transmission device the mouth of drive motor is connected with nut again, the transmission of power that transmission device provides drive motor is to nut, it is flexible to impact screw rod by the rotation driving of nut, thereby increase driving torque, reduce nut and impact the influence that the moment of deflection impact screw rod that meshing zone produced between the screw rod stretches, avoid impacting screw rod can't stretch or when flexible required motor power too big, make that impacting screw rod can require really to realize capable of expansion and contraction according to expection, when selecting a pair of gear for use as transmission device, can further improve driving torque, make and impact the flexible more steady of screw rod.Impact screw rod and be connected with the bumper/spoiler assembly by waist shaped hole, when oblique collision took place, waist shaped hole can play certain guiding energy-absorbing function.End away from nut in the threaded sleeve is equiped with the back supporting that screw rod is impacted in supporting, when oblique collision takes place, this back supporting can reduce to impact the amount of bow of screw rod, avoid impacting the nut radial shear threaded sleeve on the screw rod, make impact screw rod can be smoothly along its axial-movement, guarantee that collision process has pulsation-free stress deformation characteristic, guarantee that energy absorption device can normally move, stable its safety guard-safeguard effect of performance, also reduced vibration and noise in the screw thread transmission process simultaneously; Impact an end that supports after screw rod is positioned at and be provided with positive stop lug boss, this positive stop lug boss can prevent to break away from when impacting screw rod stretches out threaded sleeve.Screw thread shearing type collision energy-absorbing device for vehicles of the present utility model, simple in structure, be convenient to install to change, after bumping, change energy absorption device of the present utility model and just can make vehicle recovery former state; Simultaneously, energy absorption device of the present utility model is applied widely, can be widely used in various vehicles.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an A-A cross section view among Fig. 1;
Fig. 3 is that the utility model is installed in the structural representation on the vehicle longeron.
Each label is represented among the figure:
1, threaded sleeve; 2, impact screw rod; 3, car body member; 4, drive motor; 5, first gear; 6, second gear; 7, bumper/spoiler assembly; 8, back supporting; 9, spline; 10, vehicle longeron; 11, internal thread segment; 12, through hole section; 13, nut; 14, positive stop lug boss; 15, waist shaped hole; 16, waist shape boss.
The specific embodiment
As depicted in figs. 1 and 2, screw thread shearing type collision energy-absorbing device for vehicles of the present utility model, comprise threaded sleeve 1, impact screw rod 2, nut 13, transmission device and drive motor 4, threaded sleeve 1 and drive motor 4 all are fixed on the car body member 3, an end is an internal thread segment 11 in the threaded sleeve 1, the other end is a through hole section 12, an end that impacts screw rod 2 is set in the threaded sleeve 1, the other end stretches out outside the threaded sleeve 1, nut 13 by thread set in impacting on the screw rod 2, the external diameter of nut 13 is greater than the internal diameter of internal thread segment 11, nut 13 1 ends are supported in the through hole section 12 by bearing, the other end stretches out outside the threaded sleeve 1 and is connected with transmission device, transmission device links to each other with the output shaft of drive motor 4, drive motor 4 is through 13 rotations of transmission device drive nut, thereby it is flexible to drive impact screw rod 2, the extension and contraction control mode of this impact screw rod 2 has bigger driving torque, and reduced at nut 13 and impacted the flexible influence of the moment of deflection impact screw rod that meshing zone produced 2 between the screw rod 2, avoid impacting screw rod 2 can't stretch or when flexible required motor power too big, make impact screw rod 2 can according to expection require real realize capable of expansion and contraction.In the present embodiment, transmission device comprises first gear 5 and second gear 6, first gear 5 is set on the nut 13 by spline 9, second gear 6 is installed in the mouth of drive motor 4, second gear 6 and 5 engagements of first gear, and the output shaft of drive motor 4 arrives nut 13 through second gear 6 and first gear 5 with transmission of power, it is flexible to impact screw rod 2 by the rotation driving of nut 13, by the transmission gear transmission, can further improve driving torque, make and impact the flexible more steady of screw rod 2.In the present embodiment, end away from nut 13 in the threaded sleeve 1 also is equiped with the back supporting 8 that screw rod 2 is impacted in supporting, when oblique collision takes place, these back supporting 8 amount of bow that can reduce to impact screw rod 2, avoid being installed in the nut 13 radial shear threaded sleeves 1 that impact on the screw rod 2, make impact screw rod 2 guarantee that energy absorption device can normally move, stable its safety guard-safeguard effect of performance, also reduced vibration and noise in the screw thread transmission process simultaneously smoothly along its axial-movement; Impact the end that screw rod 2 is positioned at back supporting 8 ends and be provided with positive stop lug boss 14, this positive stop lug boss 14 breaks away from threaded sleeve 1 in the time of can preventing to impact screw rod 2 and stretch out, and avoids having an accident.Impact screw rod 2 stretches out the end erection insurance thick stick assembly 7 outside the threaded sleeve 1, and establish waist shape boss 16 at this end, on bumper/spoiler assembly 7, establish waist shaped hole 15, impacting screw rod 2 stretches out waist shaped hole 15 and passes through waist shape boss 16 location, when oblique collision took place, waist shaped hole 15 can play certain guiding energy-absorbing function.In the present embodiment, the negative thread of threaded sleeve 1 is an Acme thread, and in addition, the screw thread on the threaded sleeve 1 can also be selected triangle thread, square thread, saw thread or round thread as required for use.Negative thread on the nut 13 generally is made as more than two circles, nut 13 impacts the hardness of the hardness of part greater than internal thread segment 11 on the threaded sleeve 1, be convenient to cross the screw thread of shearing internal thread segment 11 and realize energy-absorbing, nut 13 internal thread parts are divided into high-abrasive material, and hardness is big slightly, when bumping with assurance, what at first cut off is the negative thread of internal thread segment 11 on the threaded sleeve 1.Screw thread shearing type collision energy-absorbing device for vehicles of the present utility model, simple in structure, be convenient to install to change, simultaneously, energy absorption device of the present utility model is applied widely, can be widely used in various vehicles.
As shown in Figure 3, screw thread shearing type collision energy-absorbing device for vehicles of the present utility model is installed on the vehicle, its two threaded sleeves 1 are installed on the vehicle longeron 10, require vehicle longeron 10 to have enough spaces and intensity, can support vehicle act on the blanking lotus on the screw thread shearing type collision energy-absorbing device during collision, the scantling of structure of screw thread shearing type collision energy-absorbing device for vehicles of the present utility model and correlation parameter are set according to the practical application space of vehicle.Under the prerequisite that does not influence the original electric-control system of vehicle, be equipped with a cover drive motor 4 start and stop control conveniences, from vehicle startup, begin to detect the instantaneous velocity of travel condition of vehicle, according to the start-stop time of detected instantaneous velocity decision drive motor 4, drive nut 13 rotations by drive motor 4 through second gear 6 and first gear 5, thereby the collapsing length of screw rod 2 is impacted in control, screw rod is adjusted to suitable impact position, so that energy absorption device has different energy absorption ability under different speed of a motor vehicle running statees.Lower or when stopping, control panel control is impacted screw rod 2 and is in full reduced state as the speed of a motor vehicle, this moment, the energy absorption ability of energy absorption device was minimum; When higher,, calculate needed energy absorption ability as the speed of a motor vehicle according to the detected instant speed of a motor vehicle of control panel, start-stop time of controlling and driving motor 4 again, make and impact screw rod 2 and stretch out corresponding length, finish the automatic compensation of energy absorption ability; When the speed of a motor vehicle reached the limit energy absorption ability of energy absorption device, screw rod just all stretched out, at this moment, and the energy absorption ability maximum.In the process of vehicle operating, impact screw rod 2 along with the speed of a motor vehicle is done corresponding flexible the adjustment, when speed stabilizing is advanced in the speed of a motor vehicle is stabilized in a velocity shooting, impact the suitable energy-absorbing position that screw rod 2 just maintains this velocity shooting, flexible no longer back and forth.Whole energy absorption ability control process need not any M/C, and is easy to use, very practical.Because the utility model adopts transmission gear to impact the flexible Poewr transmission mechanism of screw rod 2 as control, has increased driving torque, make impact screw rod 2 can be capable of expansion and contraction, thereby overcome the deficiencies in the prior art.When collision happens, nut 13 breaks through in moment and is used for bearing, the spacing back-up ring of connecting key, begin to shear step by step vertically the negative thread of internal thread segment 11 on the threaded sleeve 1 then, reach the purpose that absorbs collision energy, and guarantee that collision process has pulsation-free force deformation characteristic, after the collision, only need to change screw thread shearing type collision energy-absorbing device for vehicles of the present utility model and just can make vehicle recover former state.
The foregoing description only is a preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from principle of the present utility model; can also make some equivalents, these equivalents all should be considered as protection domain of the present utility model.
Claims (9)
1. screw thread shearing type collision energy-absorbing device for vehicles, comprise threaded sleeve (1), impact screw rod (2) and nut (13), an end is internal thread segment (11) in the described threaded sleeve (1), the other end is through hole section (12), it is characterized in that: an end of described impact screw rod (2) is set in the threaded sleeve (1), the other end stretches out outside the threaded sleeve (1), described nut (13) by thread set in impacting on the screw rod (2), the external diameter of nut (13) is greater than the internal diameter of internal thread segment (11), nut (13) one ends are supported in the through hole section (12) by bearing, it is outer and be connected with transmission device that the other end stretches out threaded sleeve (1), and described transmission device links to each other with drive motor (4) on being fixed in car body member (3).
2. screw thread shearing type collision energy-absorbing device for vehicles according to claim 1, it is characterized in that: described transmission device comprises first gear (5) and second gear (6), described first gear (5) key is connected on the nut (13), described second gear (6) is installed in the mouth of drive motor (4), second gear (6) and first gear (5) engagement.
3. screw thread shearing type collision energy-absorbing device for vehicles according to claim 1 and 2, it is characterized in that: the end away from nut (13) in the described threaded sleeve (1) is equiped with the back supporting (8) that screw rod (2) is impacted in supporting, and the end that impact screw rod (2) is positioned at back supporting (8) end is provided with positive stop lug boss (14).
4. screw thread shearing type collision energy-absorbing device for vehicles according to claim 1 and 2, it is characterized in that: described impact screw rod (2) stretches out the outer end installing bumper/spoiler assembly (7) of threaded sleeve (1), described bumper/spoiler assembly (7) is provided with waist shaped hole (15), impacts screw rod (2) and is connected with bumper/spoiler assembly (7) by waist shaped hole (15).
5. screw thread shearing type collision energy-absorbing device for vehicles according to claim 3, it is characterized in that: described impact screw rod (2) stretches out the outer end installing bumper/spoiler assembly (7) of threaded sleeve (1), described bumper/spoiler assembly (7) is provided with waist shaped hole (15), impacts screw rod (2) and is connected with bumper/spoiler assembly (7) by waist shaped hole (15).
6. screw thread shearing type collision energy-absorbing device for vehicles according to claim 1 and 2 is characterized in that: described nut (13) is connected by spline (9) with first gear (5).
7. screw thread shearing type collision energy-absorbing device for vehicles according to claim 5 is characterized in that: described nut (13) is connected by spline (9) with first gear (5).
8. screw thread shearing type collision energy-absorbing device for vehicles according to claim 1 and 2 is characterized in that: the screw thread on the described threaded sleeve (1) is Acme thread or triangle thread or square thread or saw thread or round thread.
9. screw thread shearing type collision energy-absorbing device for vehicles according to claim 7 is characterized in that: the screw thread on the described threaded sleeve (1) is Acme thread or triangle thread or square thread or saw thread or round thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203043427U CN201472283U (en) | 2009-06-12 | 2009-06-12 | Cutting thread shear type vehicle collision energy-absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203043427U CN201472283U (en) | 2009-06-12 | 2009-06-12 | Cutting thread shear type vehicle collision energy-absorbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201472283U true CN201472283U (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203043427U Expired - Lifetime CN201472283U (en) | 2009-06-12 | 2009-06-12 | Cutting thread shear type vehicle collision energy-absorbing device |
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| CN (1) | CN201472283U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565028B (en) * | 2009-06-12 | 2011-01-05 | 长沙理工大学 | Screw thread shearing type collision energy-absorbing device for vehicles |
| CN103600711A (en) * | 2013-12-02 | 2014-02-26 | 黑龙江工程学院 | Active-extension energy-absorption bumper of minibus |
| CN103963729A (en) * | 2014-04-30 | 2014-08-06 | 江苏科技大学 | Vehicle bumper with buffer energy storage function |
| CN104841710A (en) * | 2014-09-12 | 2015-08-19 | 无锡市威特机械有限公司 | Under-mold-frame support adjusting apparatus |
| WO2017063600A1 (en) * | 2015-10-16 | 2017-04-20 | 中南大学 | Telescopic energy-absorbing device for rail vehicle collisions |
| CN108657245A (en) * | 2018-03-28 | 2018-10-16 | 安徽芜湖新华印务有限责任公司 | A kind of books transport vehicle |
-
2009
- 2009-06-12 CN CN2009203043427U patent/CN201472283U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565028B (en) * | 2009-06-12 | 2011-01-05 | 长沙理工大学 | Screw thread shearing type collision energy-absorbing device for vehicles |
| CN103600711A (en) * | 2013-12-02 | 2014-02-26 | 黑龙江工程学院 | Active-extension energy-absorption bumper of minibus |
| CN103600711B (en) * | 2013-12-02 | 2015-09-30 | 黑龙江工程学院 | Utility van initiatively extends energy-absorbing bumper |
| CN103963729A (en) * | 2014-04-30 | 2014-08-06 | 江苏科技大学 | Vehicle bumper with buffer energy storage function |
| CN103963729B (en) * | 2014-04-30 | 2015-10-28 | 江苏科技大学 | There is the vehicle bumper of buffering accumulation of energy function |
| CN104841710A (en) * | 2014-09-12 | 2015-08-19 | 无锡市威特机械有限公司 | Under-mold-frame support adjusting apparatus |
| CN104841710B (en) * | 2014-09-12 | 2017-08-25 | 无锡市威特机械有限公司 | Supporting and regulating device under a kind of mould bases |
| WO2017063600A1 (en) * | 2015-10-16 | 2017-04-20 | 中南大学 | Telescopic energy-absorbing device for rail vehicle collisions |
| US10279822B2 (en) | 2015-10-16 | 2019-05-07 | Central South University | Telescopic type collision energy absorption device for rail vehicle |
| CN108657245A (en) * | 2018-03-28 | 2018-10-16 | 安徽芜湖新华印务有限责任公司 | A kind of books transport vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100519 Effective date of abandoning: 20090612 |