CN106740602B - Vehicle rear protecting - Google Patents
Vehicle rear protecting Download PDFInfo
- Publication number
- CN106740602B CN106740602B CN201611042130.7A CN201611042130A CN106740602B CN 106740602 B CN106740602 B CN 106740602B CN 201611042130 A CN201611042130 A CN 201611042130A CN 106740602 B CN106740602 B CN 106740602B
- Authority
- CN
- China
- Prior art keywords
- torsion bar
- swing arm
- bar spring
- rear bumper
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- 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
- B60R19/38—Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles
- B60R19/40—Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles in the direction of an obstacle before a collision, or extending during driving of the vehicle, i.e. to increase the energy absorption capacity of the bumper
Abstract
The invention discloses a kind of vehicle rear protectings, are mounted on the tail portion of longeron, including：Rear bumper；Torsion bar spring is horizontally installed between two longerons, is fixed in the middle part of torsion bar spring between two longerons, and the both ends of torsion bar spring are the external part for stretching out longeron, and external part can rotate on longeron；Torsion bar spring includes upper torsion bar spring and lower torsion bar spring, and face is arranged up and down for upper torsion bar spring and lower torsion bar spring；Upper swing arm, one end of upper swing arm are fixedly connected with the external part of upper torsion bar spring, and the other end and the rear bumper of upper swing arm are rotatedly connected；Lower swing arm, one end of lower swing arm are fixedly connected with the external part of lower torsion bar spring, and the other end and the rear bumper of lower swing arm are rotatedly connected；Upper swing arm, lower swing arm and rear bumper surround a parallelogram；Side where rear bumper is the movable end of parallelogram；Movable end is rotated upwardly and downwardly by upper and lower swing arm around torsion bar spring, realizes that bumper adjusts up and down, it is ensured that its passability and when to knocking into the back by torsional spring to impact force into row buffering.
Description
Technical field
The present invention relates to vehicle tail protective device fields, and in particular to a kind of vehicle rear protecting.
Background technology
With universal, the rising of vehicle fleet size of vehicle, the quantity of traffic accident generation is also more and more, in the traffic accident, there is phase
When a part of traffic accident is knocked into the back to be originated from.Pony car often has crumple zone for passive security, front part of vehicle, is both to pass through
Front part of vehicle carries out crumple during knocking into the back, by front part of vehicle, reduces the energy during Vehicular impact, but has one kind
It is car rear-end lorry to knock into the back, since car is short, lorry rear protecting consider departure angle the problem of, Some vehicles rear protecting compared with
Height, car crumple zones often hit less than rear protecting, are staggered with lorry rear protecting or even can directly bump against driver's cabin, seriously threaten sedan-chair
Vehicle safety.
As shown in Figure 1, if the rear protecting 21a of lorry 2a can just encounter the fronts car 1a, the vehicle of lorry 2a
Departure angle A is smaller, it cannot be guaranteed that the passability of lorry 2a.
As shown in Fig. 2, the vehicle departure angle A of such situation lorry is larger, meet passability and during knocking into the back, often
The front of meeting rear portion car 1a can be staggered with rear protecting 21a, and the crumple zones of vehicle cannot be hit with rear protecting, lead to car
It is easy by larger injury.If rear protecting impinges upon car top, rear protecting can give one downward power of car, small
Car can tilt, and be drilled into lorry lower part.
Invention content
The object of the present invention is to provide a kind of vehicle rear protectings, to while ensureing lorry passability, ensure rear car
Safety during knocking into the back.
The present invention provides a kind of vehicle rear protecting to achieve the goals above, is mounted on the tail portion of longeron, including：After protect
Dangerous thick stick；Torsion bar spring is horizontally installed between two longerons, described between the middle part of the torsion bar spring is fixed on two longerons by pedestal
The both ends of torsion bar spring are the external part for stretching out longeron, and the external part can rotate on longeron；The torsion bar spring includes upper torsion bar
The face setting up and down of spring and lower torsion bar spring, the upper torsion bar spring and the lower torsion bar spring；Upper swing arm, one end of the upper swing arm with
The external part of upper torsion bar spring is fixedly connected, and the other end of the upper swing arm is rotatedly connected with the rear bumper；Lower swing arm, it is described
One end of lower swing arm is fixedly connected with the external part of lower torsion bar spring, and the other end of the lower swing arm rotates phase with the rear bumper
Even；The upper swing arm, lower swing arm and the rear bumper surround a parallelogram；Side where the rear bumper is
The movable end of the parallelogram；The movable end is rotated upwardly and downwardly by the upper swing arm and the lower swing arm around torsion bar spring.
Preferably, the pedestal includes mounting plate and the fixing sleeve that is located in the middle part of the mounting plate；The mounting plate is lateral
It is fixed between two longerons, the fixing sleeve is fixedly connected with the torsion bar spring.
Preferably, the pedestal includes upper torsion bar pedestal and lower torsion bar pedestal；The lower torsion bar pedestal includes lower fixing sleeve
And bottom plate, the lower fixing sleeve are fixedly connected with the bottom plate, the bottom plate is fixed between two longerons, described
It is fixedly linked in the middle part of lower fixing sleeve and lower torsion bar spring；The upper torsion bar pedestal includes upper mounted plate, upper fixing sleeve and positioning sleeve
Pipe, fixed plate is fixed between two longerons, and fixed set is fixed on upper mounted plate bottom, the locating sleeve it is interior
It is fixedly connected in the middle part of wall and the upper torsion bar spring, the outer wall of the locating sleeve is rotatedly connected with fixed set；Institute
It states locating sleeve backwards to the side of the rear bumper to extend outwardly a limiting plate, the limiting plate is contacted with fixed plate
Limit.
Preferably, a side bottom of the rear bumper towards the longeron is fixed with a rolling along rear bumper length direction
Wheel, the bottom end acting surface of the idler wheel extend downwardly rear bumper.
Preferably, further include roller seat, the roller seat is fixedly mounted on the back of rear bumper, the idler wheel bottom
The top of seat is rotatedly connected with the upper swing arm, and the bottom of the roller seat and the roller bearing of idler wheel are rotatedly connected；The bottom
Arm is mounted on the roller bearing of the idler wheel.
Preferably, the opposed part in the inside of the upper swing arm and lower swing arm is respectively equipped with positioning protrusion；Two is described fixed
There is pre-determined distance between the protrusion of position.
Preferably, the torsion bar spring is regular hexagon torsion bar spring.
Effect of the invention is that：It is mobilizable flat that this programme by upper swing arm, lower swing arm and rear bumper surrounds one
Row quadrangle；Due to parallelogram structure feature itself, rear bumper is caused to be constantly in plumbness, thus when swing arm around
When torsion bar spring center rotates, rear bumper can move up and down, and pass through torsion bar spring force reset buffering；Ensure its passability with
And when to knocking into the back by torsional spring to impact force into row buffering.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one described in the present invention
A little embodiments, for those of ordinary skill in the art, other drawings may also be obtained based on these drawings.
Fig. 1 is the usage state diagram of lorry rear protecting when departure angle is smaller in the prior art.
Fig. 2 is the usage state diagram of lorry rear protecting when departure angle is larger in the prior art.
Fig. 3 is the assembling schematic diagram of vehicle rear protecting in the embodiment of the present invention.
Fig. 4 is the explosive view of Fig. 3.
Fig. 5 is the overall structure diagram of vehicle rear protecting.
The state diagram of vehicle rear protecting when Fig. 6 is normally travel.
Fig. 7 is the side view of upper torsion bar pedestal and lower torsion bar pedestal.
Structural schematic diagram when Fig. 8 is the limiting plate rotation of upper torsion bar pedestal.
Fig. 9 is state diagram when rear bumper is rotated upwardly and downwardly around swing arm.
Figure 10 is the stress and rotational angle relational graph of torsion bar spring when rear bumper is rotated upwardly and downwardly around swing arm.
Figure 11 is the structural schematic diagram of rear protecting when rear car collides rear protecting.
In prior art diagram：1a- car 2a- lorry 21a- rear protecting 22a- wheel A- vehicle departure angles
In figure of the present invention：Fixing sleeve 213- locating sleeves 214- on 1- rear bumper 2- pedestal 211- upper mounted plates 212-
Torsion bar spring 5- upper swing arms 6- lower swing arm 7- longerons 8- is rolled under torsion bar spring 4- on fixing sleeve 222- bottom plates 3- under limiting plate 221-
Take turns 9- roller seats
Specific implementation mode
In order to make those skilled in the art more fully understand technical scheme of the present invention, below in conjunction with attached drawing to this hair
It is bright to be further detailed.
Referring to shown in Fig. 3 to Fig. 5, being a kind of vehicle rear protecting provided in an embodiment of the present invention, it is mounted on 7 tail of longeron
Portion, including rear bumper 1 play the role of protecting vehicle tail.
And torsion bar spring, it is horizontally installed between two longerons 7, the middle part of torsion bar spring is fixed on two longerons 7 by pedestal 2
Between, the both ends of torsion bar spring are the external part for stretching out longeron, and external part can rotate on longeron 7；Torsion bar spring includes upper 3 He of torsion bar spring
Lower torsion bar spring 4, upper torsion bar spring 3 and the setting of lower about 4 face of torsion bar spring；
And upper swing arm 5, one end of upper swing arm 5 are fixedly connected with the external part of upper torsion bar spring 3, the other end of upper swing arm 5
It is rotatedly connected with rear bumper 1；
And lower swing arm 6, one end of lower swing arm 6 are fixedly connected with the external part of lower torsion bar spring 4, the other end of lower swing arm 6
It is rotatedly connected with rear bumper 1；
In the present solution, upper swing arm 5, lower swing arm 6 and rear bumper 1 surround a parallelogram；Where rear bumper 1
Side is the movable end of the parallelogram；Movable end is rotated by upper swing arm and lower swing arm around torsion bar spring.Due to parallel four
Side shape structure feature itself causes rear bumper to be constantly in plumbness, thus when swing arm is rotated around torsion bar spring center,
Movable end (rear bumper) can move up and down.It ensures its passability and to knocking into the back when delays impact force by torsional spring
Punching.
For normal vehicle operation rear protecting state as shown in fig. 6, when by slope or when knocking into the back, track is as shown in Figure 9；
Specifically, when vehicle is by slope, rear bumper 1 can be swung along torsion bar spring, it is ensured that vehicle
Can more easily (namely stress little in the case of) when passing through great slope, guarantee passes through angle.And by
It is moving forward in vehicle, the comparison of resistance that swing arm backward is subject to is small.
When vehicle rear-end collision below, bumper can be moved forward along horizontal direction, simultaneously because the work of torsion bar spring
With buffering can be played.And since during knocking into the back, rear body can lean forward, bumper can be to lower swing, after guarantee
Portion's vehicle can effectively contact always rear bumper.
Torsion bar spring can be all with pedestal using being fixedly connected, no matter rear bumper 1 is upward or rotates down, upper and lower torsion bar
Spring acts on.In the present embodiment, torsion bar spring is regular hexagon torsion bar spring, easy to process to manufacture and facilitate limit；Pedestal includes
Mounting plate and the fixing sleeve being fixed in the middle part of mounting plate；Mounting plate is secured transverse between two longerons, and welding form can be used and indulge
Beam is connected, and fixing sleeve is fixedly connected with torsion bar spring, can be provided in fixing sleeve with hexagon limit hole, coordinate torsion bar spring in
Portion fixes torsion bar spring and limits.Certainly, the connection that hexagon limit hole realizes itself and torsion bar spring can also be used in the end of swing arm.
As shown in Fig. 7 to Fig. 8, pedestal can also a use be fixedly connected with torsion bar spring, another adds limiting section mode
It is rotatablely connected with torsion bar spring, so that one of torsion bar spring all acts on always when rotating upwardly and downwardly, another is in car rear-end
It is acted on when (when rear bumper rotates down).Specifically, pedestal 2 includes upper torsion bar pedestal and lower torsion bar pedestal；Lower torsion bar pedestal
Including lower fixing sleeve 221 and bottom plate 222, lower fixing sleeve 221 is fixedly connected with bottom plate 222, and bottom plate 222 is fixed
Between two longerons, it can be used and be welded and fixed, the middle part of lower fixing sleeve 221 and lower torsion bar spring 4 is fixedly linked namely lower torsion bar spring 4
Middle part be fixed always, no matter rear bumper 1 is rotated down or rotates up, lower torsion bar spring 4 all can stress, pass through this
A power can make 1 return of rear bumper；Upper torsion bar pedestal includes upper mounted plate 211, upper fixing sleeve 212 and locating sleeve 213, on
Fixed plate 211 is fixed between two longerons 7, and upper fixing sleeve 212 is fixed on the bottom of upper mounted plate 211, the inner wall of locating sleeve 213
It is fixedly connected with the middle part of upper torsion bar spring 3, the outer wall of locating sleeve 213 is rotatedly connected with upper fixing sleeve 212；In locating sleeve
213 extend outwardly a limiting plate 214 backwards to the side of rear bumper 1, and limiting plate 214 contacts limit with upper mounted plate 211.?
That is, when rear bumper 1 rotates up, upper torsion bar spring 3 can rotate freely, and upper torsion bar spring does not stress；When rear bumper 1 is downward
When rotation, limiting plate 214 is contacted with 211 bottom of upper mounted plate, and upper torsion bar spring 3 is by torsion.Stress is as shown in Figure 10, wherein Y
Direction is torsion bar spring torque magnitude, and X-direction is the angle of swing arm rotation, wherein rear bumper moves upwards, i.e. swing arm turns upwards
Dynamic angle is that just, on the contrary is negative：That is, normal condition and being rotated down state, upper torsion bar spring can provide torsion.Insurance
When thick stick rotates up, upper torsion bar positioning pedestal is rotated with torsion bar, and upper torsion bar spring is indeformable, does not generate torsion.
It is fixed with an idler wheel 8 along rear bumper length direction in a side bottom of rear bumper towards longeron, such as Fig. 4 institutes
Show, idler wheel 8 is common structure, can be fixed on rear bumper by rolling wheel support, the bottom end acting surface of idler wheel 8 extends downwardly
Rear bumper 1.That is, when rear bumper 1 and bar contact, rear bumper 1 is connect by the acting surface of idler wheel 8 with barrier
It touches, due to forward travel at this time, so that idler wheel 8 is moved upwards along barrier, to drive rear bumper 1 to move up.
In the present solution, idler wheel is fixed on the back of rear bumper by roller seat 9, roller seat 9 is mounted on the back of the body of rear bumper 1
Portion, the top of roller seat 9 are rotatedly connected with the upper swing arm 5, and the bottom of roller seat 9 rotates phase with the roller bearing of idler wheel 8
Even；Lower swing arm 6 is mounted on the roller bearing of the idler wheel, to improve the globality of rear protecting.
In addition, the part opposed in the inside of upper swing arm 5 and lower swing arm 6 is respectively equipped with positioning protrusion 10；Such as Figure 11 institutes
Show that there is pre-determined distance between two positioning protrusion 10.When swing arm swings to certain position downwards, positioning protrusion 10 can be touched mutually
It hits, swing arm is limited, ensure that rear bumper going-back position is limited in a certain degree, as shown in figure 11.
In conclusion the present invention has the following effects that：1, using spring, ensure that the vehicle rear bumper road clearance is smaller
Simultaneously, it is ensured that departure angle is sufficiently large, ensures trafficability 2, and using spring, the guarantee vehicle that knocks into the back is slow using self structure
While rushing energy, the more buffer areas of the vehicle that knocks into the back and buffering energy are given.3, using parallelogram sturcutre, after guarantee
It is vertical that bumper ensures in vertical direction.And it using the structure and positioning protrusion of parallelogram, gives up the throne after ensureing rear bumper
It sets and is limited in a certain degree.
Above certain exemplary embodiments that the present invention is only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (5)
1. a kind of vehicle rear protecting is mounted on the tail portion of longeron, which is characterized in that including：
Rear bumper；
Torsion bar spring is horizontally installed between two longerons, between the middle part of the torsion bar spring is fixed on two longerons by pedestal, the torsion
The both ends of pole spring are the external part for stretching out longeron, and the external part can rotate on longeron；The torsion bar spring includes upper torsion bar spring
With lower torsion bar spring, the upper torsion bar spring and lower torsion bar spring face setting up and down；
Upper swing arm, one end of the upper swing arm are fixedly connected with the external part of upper torsion bar spring, the other end of the upper swing arm and institute
Rear bumper is stated to be rotatedly connected；
Lower swing arm, one end of the lower swing arm are fixedly connected with the external part of lower torsion bar spring, the other end of the lower swing arm and institute
Rear bumper is stated to be rotatedly connected；
The upper swing arm, lower swing arm and the rear bumper surround a parallelogram；Side where the rear bumper
For the movable end of the parallelogram；The movable end is turned by the upper swing arm and the lower swing arm around torsion bar spring up and down
It is dynamic；
The pedestal includes upper torsion bar pedestal and lower torsion bar pedestal；The lower torsion bar pedestal includes lower fixing sleeve and bottom plate,
The lower fixing sleeve is fixedly connected with the bottom plate, and the bottom plate is fixed between two longerons, the lower fixing sleeve with
It is fixedly linked in the middle part of lower torsion bar spring；The upper torsion bar pedestal includes upper mounted plate, upper fixing sleeve and locating sleeve, described solid
Fixed board is fixed between two longerons, and fixed set is fixed on upper mounted plate bottom, the inner wall of the locating sleeve with it is described on
It is fixedly connected in the middle part of torsion bar spring, the outer wall of the locating sleeve is rotatedly connected with fixed set；In the locating sleeve
Extend outwardly a limiting plate backwards to the side of the rear bumper, the limiting plate contacts limit with fixed plate.
2. vehicle rear protecting as described in claim 1, which is characterized in that the rear bumper is towards the side bottom of the longeron
Portion is fixed with an idler wheel along rear bumper length direction, and the bottom end acting surface of the idler wheel extends downwardly rear bumper.
3. vehicle rear protecting as claimed in claim 2, which is characterized in that further include roller seat, the roller seat is fixed
Mounted on the back of rear bumper, the top of the roller seat is rotatedly connected with the upper swing arm, the bottom of the roller seat
The roller bearing of portion and idler wheel is rotatedly connected；The lower swing arm is mounted on the roller bearing of the idler wheel.
4. vehicle rear protecting as described in claim 1, which is characterized in that the opposed portion in the inside of the upper swing arm and lower swing arm
It is respectively equipped with positioning protrusion；There is pre-determined distance between two positioning protrusion.
5. vehicle rear protecting as claimed in claim 2, which is characterized in that the torsion bar spring is regular hexagon torsion bar spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611042130.7A CN106740602B (en) | 2016-11-23 | 2016-11-23 | Vehicle rear protecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611042130.7A CN106740602B (en) | 2016-11-23 | 2016-11-23 | Vehicle rear protecting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106740602A CN106740602A (en) | 2017-05-31 |
| CN106740602B true CN106740602B (en) | 2018-10-30 |
Family
ID=58974714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611042130.7A Active CN106740602B (en) | 2016-11-23 | 2016-11-23 | Vehicle rear protecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106740602B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2022879B1 (en) * | 2019-04-05 | 2020-10-12 | Johannes Smit Stephan | Vehicle comprising a bumper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6176529B1 (en) * | 1999-01-19 | 2001-01-23 | Henschen Div. Of Qds Components | Torsional under-ride guard |
| CN202200931U (en) * | 2011-07-29 | 2012-04-25 | 徐昭 | Apparatus preventing car from plunging into truck bottom due to rear-end collision |
| CN102582553A (en) * | 2012-03-16 | 2012-07-18 | 中煤平朔煤业有限责任公司 | Multilevel anti-collision rear-end preventive buffering device for trucks |
| CN202863361U (en) * | 2012-09-25 | 2013-04-10 | 邵阳学院 | Car tail guardrail with adjustable height |
| CN105599714A (en) * | 2016-03-23 | 2016-05-25 | 贵阳吉安电控门有限公司 | Vehicle anti-collision device |
-
2016
- 2016-11-23 CN CN201611042130.7A patent/CN106740602B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106740602A (en) | 2017-05-31 |
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