CN203453366U

CN203453366U - Damper for automobile

Info

Publication number: CN203453366U
Application number: CN201320293088.1U
Authority: CN
Inventors: A·麦; O·格茨
Original assignee: ThyssenKrupp Bilstein GmbH
Current assignee: ThyssenKrupp Bilstein GmbH
Priority date: 2013-05-27
Filing date: 2013-05-27
Publication date: 2014-02-26
Anticipated expiration: 2023-05-27

Abstract

The utility model relates to a damper for an automobile. The damper containing damping device with amplitude selectivity comprises a damping pipe filled with damping fluid, a bypass and a separating piston shell connecting part all arranged between a work area on a side of a piston rod and a work area far away from the piston rod. The shell connecting part comprises a connecting flange and an installation pin receiving a damping piston, wherein the shell connecting part is formed in a way of impact extrusion; and a receiving recessed member is formed in the connecting flange. The damper for automobile solves a present technical problem. The damper for the automobile is manufactured in a simple way; a favorable shape of at least part of the damping device is formed to avoid further labor-consuming machining procedure.

Description

Vibration damper for vehicle

Technical field

The utility model relates to the vibration damper with amplitude selectivity damping device.

Background technique

For example, in DE10351353B4, known the vibration damper with amplitude selectivity damping device.Vibration damper has the damp tube of filling damp liquid, and piston rod moves back and forth therein, and uses piston rod to make daming piston motion, and the inside of damp tube is divided into the working area of piston rod side and away from the working area of piston rod thus.Daming piston has spring sheet/disk spring (spring disc) group of rigid characteristic, and for stretching, extension stage and the compression stage of vibration damper, and daming piston forms the groundwork piston of vibration damper.

Except groundwork piston, vibration damper has amplitude selectivity damping device, it is also by piston rod movement, and this damping device forms parallel with daming piston/parallel bypass on fluid, and this bypass is to construct between the working area of piston rod side and the working area away from piston rod.This bypass comprises the compensation space that is filled with damp liquid, and wherein this compensation space fluidly connects the working area of piston rod side, and connects the working area away from piston rod.In compensation space, receive isolation piston, it can be moved in complex way, compensation space is divided into the chamber of piston rod side and away from the chamber of piston rod like this, wherein in the chamber of piston rod side, be fluidly communicated with the working area of piston rod side, and be fluidly communicated with the working area away from piston rod away from the chamber of piston rod.

Bypass is worked so that have in the motion of the damp tube inner piston rod of vibration damper compared with the upper frequency vibrations of smaller tremors amplitude and can not cause activating daming piston, and damp liquid can and flow away from the bypass between the working area of piston rod back and forth through the working area of piston rod side.Yet, larger if vibration amplitude becomes, be set to so through-flow (through-flow) based on compensation space and reciprocating isolation piston arrives the contact surface against damping device, close thus bypass.If isolation piston is in the stretching, extension stage or arrive compression stage and arrived against one in its contact surface, and therefore bypass closes, the through-flow of damp liquid that flows through bypass is stopped, and flow through the back and forth working area of piston rod side and away from the daming piston between the working area of piston rod of damp liquid, has correspondingly increased cushioning effect.

Damping device is/is characterized as (feature) and usings module housing as matrix, in module housing, form compensation space, and the module housing with opening is configured in the side away from piston rod, shell attachment portion is arranged in opening, thereby by the compensation space in the closing module shell of shell attachment portion.Shell attachment portion is used for receiving daming piston; Meanwhile, Tectono－fluids conduit in shell attachment portion, connects thereby produce fluid between compensation space and the working area away from piston rod.

The module housing of known damping device is normally manufactured by machining metal body; Similarly, by turning operation, manufacture shell attachment portion particularly, known for example by being welded to connect the connection between manufacturing module shell and shell attachment portion.

DE102005055801B3 illustrates another embodiment of the vibration damper with amplitude selectivity damping device, and wherein module housing forms tubular portion, and shell attachment portion is contiguous on this tubular portion.With this type of module housing of shell attachment portion unitary construction, form swivel assembly, it forms processed according to smear metal.

Adversely, by a high proportion of machining, produce effort and expensive assembly, to need further exploitation damping device, make it possible to use for the manufacture of simplification possibility.

Model utility content

The purpose of this utility model is further to develop a kind of vibration damper with amplitude selectivity damping device, and it is implemented with simple form, and can be manufactured with favourable cost.Particularly, object is by simple manufacture method, has been formed to the favourable geometrical shape of small part damping device, thereby avoids further requiring great effort process step.

Have according to the vibration damper of the utility model embodiment's amplitude selectivity damping device and solved this object together with significant feature.In other embodiments, pointed out further favourable exploitation of the utility model.

According to the utility model, a kind of vibration damper with amplitude selectivity damping device is provided, it comprises: the damp tube that is filled with damp liquid, wherein piston rod can move back and forth, wherein with described piston rod, make daming piston motion, inside by damp tube described in daming piston is divided into the working area of described piston rod side and away from the working area of described piston rod, it is further included in the bypass forming between the described working area of described piston rod side and the described working area away from described piston rod, it comprises the compensation space that is filled with damp liquid, wherein said compensation space is formed in module housing and fluidly connects the described working area of described piston rod side and away from the described working area of described piston rod, so that described bypass is arranged to be parallel to described daming piston at hydraulic directio, it further comprises isolation piston, its received in case its in the past complex form in described compensation space, move, and it is divided into the chamber of described piston rod side by described compensation space and away from the chamber of described piston rod, further comprise shell attachment portion, it is arranged in the described module housing side away from described piston rod, it is characterized in that, described shell attachment portion comprises the mount pin that receives described daming piston, and adpting flange, wherein said shell attachment portion is manufactured by impact extruded method, and there is the reception depression forming in described adpting flange.

The utility model comprises technology religious doctrine: shell attachment portion comprises the mount pin that receives daming piston, and adpting flange, and its housing attachment portion is manufactured by impact extruded method, wherein in adpting flange, forms and receives depression.

Especially simply, can implement with remunerative price by impact extruded method, thereby manufacture economically shell attachment portion.Shell attachment portion has basic shape, and it can be manufactured with advantageous manner by impact extruded method.Therefore, impact extruded method can form cold shock pressing method.The structure with the shell attachment portion of connecting pin and adpting flange can be realized by the manufacture of impact extruded method, because in the direction corresponding to impact extruded direction, connecting pin extends adpting flange.By impact extruded method, owing to forming to manufacture, receive recessed in adpting flange, then, in the time of on shell attachment portion is arranged in away from the module housing side of piston rod, so it has expanded the compensation space in module housing.Concrete is also advantageous in that, other assembly can be arranged in compensation space, does not need to reduce the impingement area of isolation piston in compensation space, because receive recessed, in the crash direction of isolation piston, has expanded compensation space.

Shell attachment portion can be disposed in module housing by adpting flange, to receive a part that is recessed to form compensation space.Particularly, valve unit can be received in module housing, by its formation, is arranged at least one the pressure limit valve in bypass, during wherein valve unit is projected at least in part and receives recessed.By valve unit, be partly arranged in recessed of the reception of shell attachment portion, the size that isolation piston clashes into space is not significantly reduced.

In order to form the bypass of damping device between the working area at piston rod side and the working area away from piston rod, can prepare to introduce fluid conduit systems in the mount pin of shell attachment portion, particularly, this fluid conduit systems is towards recessed the opening of reception in the adpting flange of shell attachment portion.By valve unit, be arranged in compensation space, valve unit is projected in recessed of reception in the adpting flange of shell attachment portion at least in part, and damp liquid can flow from the fluid conduit systems valve unit that directly reclines.Meanwhile, the advantage of realization is the relative configurations of valve unit, and it can be as the contact surface of isolation piston.

Receiving recessed can have, for example, be similar to the profile of taper, and it is symmetrically constructed round fluid conduit systems particularly.Therefore, fluid conduit systems can extend through shell attachment portion in center, and fluid conduit systems can pass through, and for example machine drilling technique, is incorporated in mount pin.

In order to produce favourable as far as possible and simple as far as possible connection of manufacturing between shell attachment portion and module housing, shell attachment portion can be threaded connection and be arranged in module housing, its housing attachment portion has the part that forms spanner size thereon, particularly, wherein can manufacture this part by impact extruded method.Therefore, can implement impact extruded method, so that spanner size has been ready to use, it does not need by further step, and for example machining, processes.

By thering is the structural design of the shell attachment portion of mount pin and adpting flange, thereby produce some possibilities, to implement impact extruded method, manufacture shell attachment portion.For example, cylinder block can be used as parent material, and it is formed with the combination of female part/auxiliary assembly and male part/common unit in cold shock pressing method.Concrete method can form forward-reverse impact pressing method of combination, for example form at the same time recessed the edge of reception at adpting flange edge, can be formed on the region of manufacturing in reverse impact pressing method, and the mount pin that extends adpting flange is formed on the region of manufacturing in forward impact pressing method.The fringe region and the mount pin that receive recessed can be manufactured in common impact extruded technique.

Accompanying drawing explanation

Together with the description of preferred embodiment of the present utility model, further presented in detail the further measure of the present utility model that improves below by reference to the accompanying drawings.Be illustrated as:

Fig. 1 is the sectional view of the amplitude selectivity damping device of vibration damper,

Fig. 2 is the sectional view of shell attachment portion, and

Fig. 3 is the perspective view of shell attachment portion.

List of reference numbers

1 vibration damper

10 damp tubes

11 piston rods

12 daming pistons

The working area of 13 piston rod sides

14 working areas away from piston rod

15 compensation spaces

The chamber of 15a piston rod side

15b is away from the chamber of piston rod

16 module housing

17 isolation pistons

18 shell attachment portions

19 mount pins

20 adpting flanges

21 receive depression

22 valve units

23 fluid conduit systems

24 are threaded

25 spanner sizes

26 spiral connection/threaded couplings

27 ostiums

28 impact groove/shock axis

29 fluid conduit systems

30 piston unts

31 helical thread portions

32 helical thread portions

Embodiment

Fig. 1 illustrates the sectional view through the amplitude selectivity damping device in the damp tube 10 of vibration damper 1, and vibration damper 1 can be as the assembly of vehicle chassis for example, for wheel of vehicle damping be installed to the framework of vehicle.In protection domain of the present utility model, vibration damper 1 can be constructed to mono-tube shock absorber by way of example, and also can be constructed in the same manner have the dual-tube shock absorber of same characteristic features.

In the layout of this damping device between piston rod 11 and daming piston 12, wherein daming piston 12 is divided into the working area 13 of piston rod side by the working area of damp tube 10 and away from the working area 14 of piston rod 11, damp tube 10 is filled with damp liquid.In the mode not further being shown specifically, daming piston 12 comprises the spring washer/spring plate group with rigid characteristic, when daming piston 12 moves back and forth in damp tube 10 by piston rod 11, by spring sheet damp liquid, can flow through daming piston 12.

As basic construction package, damping device comprises module housing 16, and it connects 26 through spiral and is connected with piston rod 11.In abutting connection with module housing 16 be shell attachment portion 18, it tightens to the opening side of module housing 16, the placement contrary to piston rod 11 of this opening side.Module housing 16 is configured with mitriform form approx, and it has cylindrical compensation space 15, guides therein isolation piston 17, and it can be moved in complex way.By isolation piston 17, compensation space 15 is divided into the chamber 15a of piston rod side and away from the chamber 15b of piston rod 11.

Shell attachment portion 18 24 tightens in module housing 16 through being threaded, and in damping device, valve unit 22 is received in the pulling assembly of shell attachment portion 18 and module housing 16.Valve unit 22 forms the pressure limit valve with valve spring packing ring, compares with the valve spring packing ring being arranged on daming piston 12, and it has more softness characteristics.Daming piston 12 is received on the mount pin 19 of shell attachment portion 18, and in addition, shell attachment portion 18 has adpting flange 20, and by adpting flange, shell attachment portion 18 24 is connected in module housing 16 through being threaded.

In the stretching, extension stage, in damp tube 10, in plane in the drawings, upwards guide piston rod 11, the damp liquid that comes from the working area 13 of piston rod side flows in the chamber 15a of compensation space 15 of piston rod side.For this reason, some ostiums 27 are introduced in module housing 16, and it is evenly distributed on the outer of module housing 16 and places, and between the outer surface region of module housing 16 and cylindrical form interior surface region, extend.Therefore, damp liquid can flow back and forth between the working area 13 of piston rod side and the chamber 15a of piston rod side, and isolation piston 17 can prolong its impact groove 28 motions thus, and 28 whiles of impact groove are corresponding to the impact groove 28 of vibration damper 1.

In compression stage, wherein in damp tube 10, in plane in the drawings, press piston rod 11 downwards, under damping effect, fluid conduit systems 29 in the mount pin 19 of damp liquid through being introduced in shell attachment portion 18, in the valve unit 22 chamber 15bs of inflow away from the compensation space 15 of piston rod 11, be thus connected recessed 21 part forming away from the chamber 15b of piston rod 11 of reception in flange 20.Therefore, away from the chamber 15b of piston rod, be again filled with damp liquid, isolation piston 17 moves upward thus, and the chamber 15a size of piston rod side is reduced again simultaneously, and damp liquid flows in the working area 13 of piston rod side again through ostium 27.

Fig. 2 and 3 illustrates sectional view (Fig. 2) and the perspective view (Fig. 3) of shell attachment portion 18.In sectional view, can find out, shell attachment portion 18 has recessed 21 of reception in adpting flange 20, as shown in Figure 1, during valve unit 22 is partly projected into and receives recessed.In abutting connection with on adpting flange 20 being mount pin 19, fastening with piston unt 30, daming piston 12 is received.Fluid conduit systems 23 extends through mount pin 19, and this fluid conduit systems is towards receiving recessed 21 openings, and the damp liquid of the fluid conduit systems 23 of the flowing through valve unit 22 that can directly recline flows.

In the side towards mount pin 19, shoulder is positioned on adpting flange 20, by its spanner size 25, be formed, as shown in Figure 3, hexagonal width across flat.Spanner size 25 is for making instrument can be applied to it, thereby shell attachment portion 18 is tightened in module housing 16, and retaining thread connects 24.

Shell attachment portion 18 is manufactured by cold shock pressing method, and is to consist of Steel material.Therefore, the matrix of shell attachment portion 18 comprises/is characterized as the texture structure (texture) in (feature) material, the manufacture method of its indication cold shock pressing method.Texture structure allows proof when formation technique is manufactured matrix, the flow direction of material.Mount pin 19 has flow direction in texture structure, and it produces by forward impact pressing method, round the region that receives the adpting flange 20 of recessed 21, comprises/be characterized as the texture structure that reverse impact pressing method forms.As a result, according to the utility model, by implementing forward-reverse impact pressing method of combination under the room temperature forming material, manufacture shell attachment portion 18.Therefore, fully, only need subsequently the

helical thread portion

31 and 32 of the mark of indicating in machining Fig. 2 middle section.In addition, can manufacture fluid conduit systems by mechanical drilling method, if wherein applicable, outer surface region that also can machining mount pin 19, receives isolation piston 12 thereby can assemble exactly.

The utility model is not limited to embodiment the preferred embodiment of indicating above.On the contrary, can expect some variants, in embodiment of different nature substantially, these variants are also used the solution of proposition.Come from all features and/or advantage in claim, specification or accompanying drawing, comprise that CONSTRUCTED SPECIFICATION or space layout are to being absolutely necessary in the combinations of model utility self and great majority variation.

Claims

1. a vibration damper (1) with amplitude selectivity damping device, it comprises:

Be filled with the damp tube (10) of damp liquid, wherein piston rod (11) can move back and forth, wherein use described piston rod (11) to make daming piston (12) motion, inside by the described damp tube of daming piston (12) (10) is divided into the working area (13) of described piston rod side and away from the working area (14) of described piston rod (11), it further comprises

The bypass forming in the described working area (13) of described piston rod side and between away from the described working area (14) of described piston rod (11), it comprises the compensation space (15) that is filled with damp liquid, wherein said compensation space (15) is formed in module housing (16) and fluidly connects the described working area (13) of described piston rod side and away from the described working area (14) of described piston rod (11), so that described bypass is arranged to be parallel to described daming piston (12) at hydraulic directio, it further comprises

Isolation piston (17), its received in case its in the past complex form in described compensation space (15), move, and it is divided into the chamber (15a) of described piston rod (11) side by described compensation space (15) and away from the chamber (15b) of described piston rod (11), further comprises

Shell attachment portion (18), it is arranged in described module housing (16) side away from described piston rod (11),

It is characterized in that, described shell attachment portion (18) comprises the mount pin (19) that receives described daming piston (12), and adpting flange (20), wherein said shell attachment portion (18) is manufactured by impact extruded method, and has the reception depression (21) forming in described adpting flange (20).

2. vibration damper according to claim 1 (1), it is characterized in that, described shell attachment portion (18) is arranged in described module housing (16) by described adpting flange (20), so that described reception recessed (21) forms a part for described compensation space (15), and form particularly the part away from the chamber (15b) of described piston rod (11).

3. according to the vibration damper (1) described in claim 1 or 2, it is characterized in that, valve unit (22) is received in described module housing (16), by its formation, be arranged at least one the pressure limit valve in described bypass, wherein said valve unit (22) is projected in described reception recessed (21) at least in part.

4. according to the vibration damper (1) described in claim 1 or 2, it is characterized in that, fluid conduit systems (23) is introduced in described mount pin (19), and it is towards recessed (21) opening of described reception.

5. vibration damper according to claim 4 (1), is characterized in that, described reception recessed (21) is approximate tapered profiles, and it is symmetrically formed around described fluid conduit systems (23) particularly.

6. vibration damper according to claim 1 (1), it is characterized in that, described shell attachment portion (18) is threaded connection (24) and is disposed in described module housing (16), wherein said shell attachment portion (18) comprises the part that forms spanner size (25) thereon, particularly, wherein this part is manufactured by described impact extruded method.

7. vibration damper according to claim 1 (1), is characterized in that, described shell attachment portion (18) is manufactured by forward-reverse impact pressing method of combination.

8. according to the vibration damper (1) described in the claims 7, it is characterized in that, described mount pin (19) forms the part of described shell attachment portion (18), it is manufactured by forward impact pressing method, and/or described adpting flange (20) forms the part of described shell attachment portion (18), it is manufactured by reverse impact pressing method.