CN205989715U - A kind of energy management bumper - Google Patents

Abstract

This utility model provides a kind of energy management bumper, belong to auto parts machinery field, including buffer arm and Buffer Unit, it is provided with cushion space between buffer arm and the vehicle frame of automobile, Buffer Unit is arranged in cushion space, Buffer Unit connects buffer arm and vehicle frame respectively, Buffer Unit includes fixture and movable part, fixture includes the plunger shaft with an opening, movable part is slidably arranged in piston intracavity and blocks opening, fixture is fixedly connected with buffer arm or is integrally formed, and movable part is used for being connected with vehicle frame, and plunger shaft is surrounded confined space by movable part.This device, using impacting that Buffer Unit fully absorbs that buffer arm is subject to, protects vehicle body.

Description

A kind of energy management bumper

Technical field

This utility model is related to auto parts machinery field, in particular to a kind of energy management bumper.

Background technology

Bumper is not only the automobile component possessing decoration function, more importantly absorbs and relaxes foreign impacts Power, protection vehicle body protect the safety device of vehicle body and occupant safety function.With auto industry development and engineering plastics in vapour The extensive application of turner industry, bumper has also moved towards the road reformed as a kind of important safety device.Automobile at present Front/rear collision bumper, in addition to keeping original defencive function, also will pursue the harmony with car body moulding and unification, pursuit itself Lightweight.The front/rear collision bumper of car is all that plastics are made, and people are referred to as plastic bumper.

Inventor finds under study for action, and in prior art, original bumper includes：Bumper body, described insurance Thick stick body is directly made up of internal layer fixed support and outer layer baffle plate, bumper occur than larger collision when, shock resistance Lack in ability, buffering effect is poor, be also easy to be scraped off when bumper occurs slight scratching, be accomplished by after scratch painting Even change.The ability that existing bumper absorbs impact is poor, is merely possible to a protection during scraping in most cases Part, is difficult to safeguard vehicle body safety when running into strong shock.

Utility model content

The purpose of this utility model is to provide a kind of energy management bumper, to improve the shock absorbing of energy management bumper Ability.

This utility model is realized in：

A kind of energy management bumper, including buffer arm and Buffer Unit, is arranged between described buffer arm and the vehicle frame of automobile Have cushion space, described Buffer Unit is arranged in described cushion space, described Buffer Unit connect respectively described buffer arm with Described vehicle frame, described Buffer Unit includes fixture and movable part, and described fixture includes the plunger shaft with an opening, institute State movable part to be slidably arranged in described piston intracavity and block described opening, described fixture be fixedly connected with described buffer arm or It is integrally formed, described movable part is used for being connected with described vehicle frame, and described plunger shaft is surrounded confined space by described movable part.

Movable part is slidably arranged in piston intracavity and blocks the opening of plunger shaft so that being formed between plunger shaft and movable part One confined space, the mobile air pressure change that can affect in confined space of movable part, in this process movable part be equivalent to One piston, due to there being cushion space between buffer arm and vehicle frame, when bumper is impacted, between fixture and movable part Meeting relative displacement, movable part compresses confined space, and the air pressure of confined space increases and provides bigger counteracting force to balance work The active force of moving part, during fixture with movable part relative displacement, the impact that buffer arm is subject to is buffered, and improves Vehicle body is for the ability to bear of collision.Additionally, the fixture and movable part length under most compressed state is also buffer arm The minimum distance apart from vehicle body under buffer gear working condition, it is to avoid the excessive direct shock car of impact that crash bar is subject to Body.

Further, described buffer arm includes first connecting portion, main part and the second connecting portion being sequentially connected, and described One connecting portion, described main part and described second connecting portion coordinate U-shaped structure, and described first connecting portion is equal with second connecting portion It is connected with described vehicle frame, described fixture is connected with described main part.

The cushion space that the crash bar of U-shape structure is formed is longer, and the spacing between two connecting portions is big.Corresponding crash bar About less near the deformation quantity of first connecting portion or the region of second connecting portion.Spacing between two connecting portions is big, beneficial to anti- Lance deformation, the deformation of crash bar is beneficial to absorb the impulsive force of collision.

Further, described Buffer Unit also includes stage clip, described stage clip be arranged on described movable part and described vehicle frame it Between, described stage clip is in the raw or compressive state.

It is arranged on the stage clip between movable part and vehicle frame and can absorb impact, movable part and fixture composition one wheel buffer Structure, stage clip forms another wheel buffer gear, and both cooperations can provide higher assimilation effect for large impact.

Further, one end of described stage clip and described movable part are fixed, and the other end of described stage clip props up described vehicle frame.

Stage clip is fixed on movable part, for the two ends with stage clip are connected with movable part and vehicle frame respectively, processing More convenient.Convenient in dismounting, replacing buffer arm.

It is in same purpose, one end of described stage clip is fixed with described vehicle frame, the other end of described stage clip props up described Movable part.

Further, described plunger shaft is cylindrical tract, and described movable part is cylindrical structural.

Movable part is disposed as cylinder with corresponding plunger shaft so that movable part is not only able to slide along the axial direction of plunger shaft Move moreover it is possible to rotate in piston intracavity.Avoid blocking between movable part and plunger shaft in unexpected impulsive force and lead to Buffer Unit no Method normal work or directly damage.When there is stuck phenomenon, the probability that columned structure is resumed work is higher than quadrangular shape Structure.

Further, it is to be detachably connected between described buffer arm and described vehicle frame.

Therebetween it is to be detachably connected can conveniently keep in repair, dismantle or change buffer arm.

Further, it is detachably connected by securing member between described buffer arm and described vehicle frame.

Securing member connection has connection reliability, and application is wide, the advantage more than the scene of adaptation.By spanner, screwdriver Can rapidly be mounted and dismounted Deng instrument.

Further, described securing member includes elastomeric pad, screw bolt and nut, and described buffer arm is respectively provided with described vehicle frame There is the connecting hole for wearing bolt.

Bolt, nut and elastomeric pad constitute one group of connection unit.Easily rushed because buffer arm is lower in working order Hit, the intensity of both screw bolt and nut is higher, easily directly produce inelastic deformation and lead to user can not normally be dismantled, Add elastomeric pad possess certain adjustment space by connection unit, can reduce between screw bolt and nut produce non-resilient The probability of deformation.

Further, described Buffer Unit is at least two groups.

Multigroup Buffer Unit is set and can play more preferable cushioning effect.Additionally, the buffer arm being clashed into is in each position The deformation quantity put is different, and by increasing multigroup Buffer Unit so that the zone of action of buffering is more, the effect of buffering is more preferable.

The beneficial effects of the utility model are：Movable part is slidably arranged in piston intracavity and blocks the opening of plunger shaft, makes Obtain and between plunger shaft and movable part, form a confined space, the mobile air pressure change that can affect in confined space of movable part, Movable part is equivalent to a piston in this process, due to there being cushion space between buffer arm and vehicle frame, when bumper is subject to During impact, meeting relative displacement between fixture and movable part, movable part compresses confined space, and the air pressure of confined space increases and carries Carry out the active force of balancing activity part for bigger counteracting force, during fixture with movable part relative displacement, buffer arm The impact being subject to is buffered, and improves the ability to bear for collision for the vehicle body.Additionally, fixture and movable part are in maximum pressure Length under contracting state is also the minimum distance apart from vehicle body under buffer gear working condition for the buffer arm, it is to avoid crash bar is subject to The excessive direct shock vehicle body of impact arriving.

Brief description

In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to use required in embodiment Accompanying drawing be briefly described it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other related accompanying drawings according to these accompanying drawings.

A kind of structural representation of energy management bumper that Fig. 1 provides for this utility model embodiment；

Fig. 2 is the structural representation of the buffer arm in Fig. 1；

Fig. 3 is the sectional view of the buffer gear in Fig. 1.

Reference collects：

Buffer arm 100；First connecting portion 101；Main part 102；Second connecting portion 103；Buffer gear 200；Fixture 201；Movable part 202；Stage clip 203；Vehicle frame 300；Securing member 400.

Specific embodiment

In prior art, original energy management bumper includes：Bumper body, described bumper body is directly by internal layer Fixed support and outer layer baffle plate are constituted, energy management bumper occur than larger collision when, impact resistance is weak, buffering effect Really poor, also it is easy to be scraped off when energy management bumper occurs slight scratching, be accomplished by spray painting after scratch and even change.Existing Bumper absorb impact ability poor, be merely possible to a guard member during scraping in most cases, strong running into It is difficult to during shock safeguard vehicle body safety.

In consideration of it, this utility model provides a kind of energy management bumper with buffer gear.Buffer gear includes solid Determine part and movable part, fixture is provided with plunger shaft, movable part sealing piston chamber and being lived in the activity of piston intracavity, plunger shaft The confined space of moving part isolation forms a cylinder, and when buffer arm is impacted and deforms, movable part compresses confined space, and The counteracting force being provided by the air in confined space, during movable part compression, the impact that buffer arm is subject to is continuous It is buffered assembly to absorb.

It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can To be combined with each other.

Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality Accompanying drawing in type embodiment, is clearly and completely described it is clear that being retouched to the technical scheme in this utility model embodiment The embodiment stated is a part of embodiment of this utility model, rather than whole embodiments.Generally described in accompanying drawing herein and The assembly of this utility model embodiment illustrating can be arranged with various different configurations and design.Therefore, below to attached The detailed description of the embodiment of the present utility model that in figure provides is not intended to limit claimed scope of the present utility model, But it is merely representative of selected embodiment of the present utility model.Based on the embodiment in this utility model, ordinary skill people The every other embodiment that member is obtained under the premise of not making creative work, broadly falls into the model of this utility model protection Enclose.

In description of the present utility model it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable The orientation of instruction such as hour hands ", " counterclockwise " or position relationship are based on orientation shown in the drawings or position relationship, or this is real The orientation usually put when being used with novel product or position relationship, or the usual orientation understanding of those skilled in the art or Position relationship, is for only for ease of description this utility model, rather than the equipment of instruction or hint indication or element must have Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that two or two More than, unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be It is mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning in this utility model for the above-mentioned term.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it D score can include the first and second feature directly contacts it is also possible to include the first and second features not to be directly contact but logical Cross the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " include the One feature is directly over second feature and oblique upper, or to be merely representative of fisrt feature level height be higher than second feature.First is special Levy second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only Represent that fisrt feature level height is less than second feature.

Embodiment

Refer to Fig. 1, Fig. 2 and Fig. 3, this utility model embodiment provides a kind of energy management bumper, including buffer arm 100 and Buffer Unit 200.

Refer to Fig. 1 and Fig. 2, in the present embodiment, buffer arm 100 includes first connecting portion 101, the main body being sequentially connected Portion 102 and second connecting portion 103, first connecting portion 101, main part 102 and second connecting portion 103 coordinate U-shaped structure, and first Connecting portion 101 is all connected with vehicle frame 300 with second connecting portion 103, and fixture 201 is connected with main part 102.

The cushion space that the crash bar of U-shape structure is formed is longer, and the spacing between two connecting portions is big.Corresponding crash bar About less near the deformation quantity of first connecting portion 101 or the region of second connecting portion 103.Spacing between two connecting portions is big, Beneficial to crash bar deformation, the deformation of crash bar is beneficial to absorb the impulsive force of collision.

It is provided with cushion space, Buffer Unit 200 is arranged on cushion space between the vehicle frame 300 of buffer arm 100 and automobile Interior.

Refer to Fig. 3, Buffer Unit 200 connects buffer arm 100 and vehicle frame 300 respectively, Buffer Unit 200 includes fixture 201 include the plunger shaft with an opening with movable part 202, fixture 201, and movable part 202 is slidably arranged in piston intracavity And block opening, movable part is used for being connected with vehicle frame 300, and plunger shaft is surrounded confined space by movable part 202.

Plunger shaft is cylindrical tract, and movable part 202 is cylindrical structural.

Movable part 202 is disposed as cylinder with corresponding plunger shaft so that movable part 202 is not only able to along plunger shaft Slide axially moreover it is possible to rotate in piston intracavity.Avoid blocking between movable part 202 and plunger shaft in unexpected impulsive force and lead to delay Rushing assembly 200 cannot normal work or direct damage.When there is stuck phenomenon, the probability that columned structure is resumed work is high In quadrangular shape structure.

In the present embodiment, fixture 201 is fixedly connected with buffer arm 100.Additionally, fixture 201 can also be with anticollision Thick stick 100 is integrally formed.

Movable part 202 be slidably arranged in piston intracavity and block plunger shaft opening so that plunger shaft and movable part 202 it Between formed a confined space, the mobile air pressure change that can affect in confined space of movable part 202, in this process activity Part 202 is equivalent to a piston, due to having cushion space between buffer arm 100 and vehicle frame 300, when bumper is impacted, Meeting relative displacement between fixture 201 and movable part 202, movable part 202 compresses confined space, and the air pressure of confined space increases simultaneously Bigger counteracting force is provided to carry out the active force of balancing activity part 202, in the mistake of fixture 201 and movable part 202 relative displacement Cheng Zhong, the impact that buffer arm 100 is subject to is buffered, and improves the ability to bear for collision for the vehicle body.Additionally, fixture 201 and length under most compressed state for the movable part 202 be also buffer arm 100 under Buffer Unit 200 working condition away from Minimum distance from vehicle body, it is to avoid the excessive direct shock vehicle body of impact that crash bar is subject to.

Further, Buffer Unit 200 also includes stage clip 203, stage clip 203 be arranged on movable part 202 and vehicle frame 300 it Between, stage clip 203 is in the raw or compressive state.One end of stage clip 203 is fixing with movable part 202, the other end of stage clip 203 Prop up vehicle frame 300.

The stage clip 203 being arranged between movable part 202 and vehicle frame 300 can absorb impact, movable part 202 and fixture 201 composition one wheel Buffer Unit 200, stage clip 203 forms another wheel Buffer Unit 200, and both cooperations can carry for large impact For higher assimilation effect.

Stage clip 203 is fixed on movable part 202, with respect to the two ends with stage clip 203 respectively with movable part 202 and vehicle frame For 300 connect, processing is more convenient.Convenient in dismounting, replacing buffer arm 100.Additionally, stage clip 203 can also one end Fixing with vehicle frame 300, the other end props up movable part 202.

In the present embodiment, Buffer Unit 200 is five groups.

Multigroup Buffer Unit 200 is set and can play more preferable cushioning effect.Additionally, the buffer arm 100 being clashed into exists The deformation quantity of each position is different, by increasing multigroup Buffer Unit 200 so that the zone of action of buffering is more, the effect of buffering Fruit is more preferably.The quantity of Buffer Unit 200 can be increased or decreased according to practical situation.

Further, it is detachably connected by securing member 400 between buffer arm 100 and vehicle frame 300.Securing member 400 includes Elastomeric pad, screw bolt and nut, buffer arm 100 and vehicle frame 300 are provided with the connecting hole for wearing bolt.

Therebetween it is to be detachably connected can conveniently keep in repair, dismantle or change buffer arm 100.Securing member 400 connects tool There is connection reliable, application is wide, the advantage more than the scene of adaptation.Can rapidly be carried out by instruments such as spanner, screwdrivers Installation and removal.Bolt, nut and elastomeric pad constitute one group of connection unit.Because buffer arm 100 is lower easy in working order Impacted, the intensity of both screw bolt and nut is higher, easily directly produce inelastic deformation and lead to user just can not carry out Often dismantle, the elastomeric pad of interpolation possesses certain adjustment space by connection unit, can reduce and produce between screw bolt and nut Inelastic deformation probability.

Unless specifically stated otherwise, the part, step, numerical expression and the numerical value that otherwise illustrate in these embodiments are simultaneously Do not limit scope of the present utility model.

The device that this utility model embodiment is provided, it realizes principle and the technique effect of generation and preceding method is implemented Example is identical, and for briefly describing, device embodiment part does not refer to part, refers to corresponding contents in preceding method embodiment.

In all examples being illustrated and described herein, any occurrence should be construed as merely exemplary, and not It is as restriction, therefore, other examples of exemplary embodiment can have different values.

It should be noted that：Similar label and letter represent similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then do not need it to be defined further and explains in subsequent accompanying drawing.

The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this For the technical staff in field, this utility model can have various modifications and variations.All of the present utility model spirit and principle Within, any modification, equivalent substitution and improvement made etc., should be included within protection domain of the present utility model.

Claims (10)

1. a kind of energy management bumper is it is characterised in that include buffer arm and Buffer Unit, the vehicle frame of described buffer arm and automobile Between be provided with cushion space, described Buffer Unit is arranged in described cushion space, and described Buffer Unit connects described respectively Buffer arm and described vehicle frame, described Buffer Unit includes fixture and movable part, and described fixture is included with an opening Plunger shaft, described movable part is slidably arranged in described piston intracavity and blocks described opening, described fixture and described buffer arm It is fixedly connected or is integrally formed, one end of described movable part is connected with described vehicle frame, described plunger shaft is surrounded by described movable part Confined space.

2. energy management bumper according to claim 1 is it is characterised in that described buffer arm includes first being sequentially connected Connecting portion, main part and second connecting portion, described first connecting portion, described main part and the cooperation of described second connecting portion are U-shaped Structure, described first connecting portion is all connected with described vehicle frame with second connecting portion, and described fixture is connected with described main part.

3. energy management bumper according to claim 2 is it is characterised in that described Buffer Unit also includes stage clip, described Stage clip is arranged between described movable part and described vehicle frame, and described stage clip is in the raw or compressive state.

4. energy management bumper according to claim 3 is it is characterised in that one end of described stage clip is solid with described movable part Fixed, the other end of described stage clip props up described vehicle frame.

5. energy management bumper according to claim 3 is it is characterised in that one end of described stage clip is solid with described vehicle frame Fixed, the other end of described stage clip props up described movable part.

6. energy management bumper according to claim 1 is it is characterised in that described plunger shaft is cylindrical tract, described Movable part is cylindrical structural.

7. energy management bumper according to claim 1 is it is characterised in that be can between described buffer arm and described vehicle frame Dismounting connects.

8. energy management bumper according to claim 7 is it is characterised in that pass through between described buffer arm and described vehicle frame Securing member is detachably connected.

9. energy management bumper according to claim 8 is it is characterised in that described securing member includes screw bolt and nut, institute State buffer arm and be provided with the connecting hole for wearing bolt with described vehicle frame.

10. energy management bumper according to claim 1 is it is characterised in that described Buffer Unit is at least two groups.