CN103470678A - Shock absorber - Google Patents
Shock absorber Download PDFInfo
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- CN103470678A CN103470678A CN2013104463949A CN201310446394A CN103470678A CN 103470678 A CN103470678 A CN 103470678A CN 2013104463949 A CN2013104463949 A CN 2013104463949A CN 201310446394 A CN201310446394 A CN 201310446394A CN 103470678 A CN103470678 A CN 103470678A
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- damper member
- shock absorbing
- elastomeric damper
- damping spring
- piston rod
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- Vibration Dampers (AREA)
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Abstract
The invention provides a shock absorber, which comprises a damper cylinder and a piston component. A piston rod which is sheathed outside the damper cylinder and the piston component is provided with a shock absorbing spring. An elastic shock absorbing piece which is sheathed outside the piston rod is arranged between the shock absorbing spring and the piston rod. The elastic shock absorbing piece is isolated from the shock absorbing spring. When the elastic shock absorbing piece is compressed or expanded under the effect of impact, the elastic shock absorbing piece can be ensured not to be in contact with the shock absorbing spring, the shock absorbing spring is effectively prevented from causing shear damages to the elastic shock absorbing piece, the service life of the elastic shock absorbing piece is guaranteed, the rigidity of the elastic shock absorbing piece can be gradually increased under the effect of impact, gentle transition is realized and the impact is eliminated; the deformation quantity of the elastic shock absorbing piece can be effectively controlled, the maximum working stroke of the shock absorber is guaranteed, the faults such as interference are prevented from occurring, the impact resistance and the maximum bearing capacity can be increased and the safety and the reliability are increased. The shock absorber has the advantages of simple structure, convenience in manufacturing and low cost.
Description
Technical field
The present invention relates to a kind of motor vehicle component, relate in particular to a kind of vibration damper.
Background technique
Vibration damper is the critical piece of motor vehicle, for improving the driving comfort of vehicle, and guarantees under comparatively severe running environment to guarantee the performance and used life of car load.The vibration damper generally adopted generally comprises damper cylinder and piston rod, at damper cylinder and piston rod overcoat, damping spring is arranged, one end of piston rod is provided with piston assembly and is deep in the damper cylinder, the other end of piston rod (being the end of travel of rear shock absorber) is installed the elastomeric damper member that external diameter is less than the damping spring internal diameter, in order at large load or run into while impacting and increase rigidity, strengthen the travelling comfort of vehicle simultaneously; Because interior wall construction after the compressed distortion of damping spring is irregular structure, the largest deformation amount of elastomeric damper member can not be effectively controlled, thereby the maximum functional stroke of damping can not be guaranteed, easily cause the hidden danger such as interference; And when vehicle is subject to large impact when driving, the elastomeric damper member deformation quantity increases (being that elastomeric damper member is subject to impacting the generation compression-expansion), even be greater than the internal diameter of spring, when elastomeric damper member deformation, damping spring is compressed, thereby make damping spring cause shear fracture to elastomeric damper member, make the performance of elastomeric damper member be damaged, have a strong impact on the travelling comfort of driving; The number of times that is sheared destruction along with elastomeric damper member increases, the extent of damage aggravation of elastomeric damper member, thereby elastomeric damper member occurs to come off, when vehicle is heavily loaded or be subject to large impact, the damper cylinder will be arranged at piston rod and be provided with the damping spring base and produce rigid impact, and then cause vibration damper generation leakage of oil to damage, even may cause security incident.
Therefore, need to be improved existing vibration damper, can make elastomeric damper member be subject to impacting when compression-expansion occurs, can not contact with damping spring, effectively avoid damping spring to cause shear fracture to elastomeric damper member, guarantee the working life of elastomeric damper member, and can make elastomeric damper member increase gradually rigidity when being subject to impacting, excessively mild, and then eliminate and impact; Can effectively control the deformation quantity of elastomeric damper member, guarantee the maximum functional stroke of vibration damper, the fault such as avoid interfering, can when equal maximum functional stroke, greatly increase its maximum load capacity value, increase impact resistance and bearing capacity, increase safety reliability.
Summary of the invention
In view of this, a kind of vibration damper provided by the invention, can make elastomeric damper member be subject to impacting when compression-expansion occurs, can not contact with damping spring, effectively avoid damping spring to cause shear fracture to elastomeric damper member, guarantee the working life of elastomeric damper member, and can make elastomeric damper member increase gradually rigidity when being subject to impacting, excessively mild, and then eliminate and impact; Can effectively control the deformation quantity of elastomeric damper member, guarantee the maximum functional stroke of vibration damper, the fault such as avoid interfering, can when equal maximum functional stroke, greatly increase its maximum load capacity value, increase impact resistance and bearing capacity, increase safety reliability.
A kind of vibration damper provided by the invention, at least comprise damper cylinder and piston assembly, the piston rod that is coated at damper cylinder and piston assembly is provided with damping spring, be coated at piston rod and be provided with elastomeric damper member between damping spring and piston rod, isolate between described elastomeric damper member and damping spring; The mode of isolation can adopt existing any mechanical structure that can realize isolation, comprises isolation net etc.; The elastomeric damper member of the integral body that elastomeric damper member refers generally to, such as whole rubber parts.
Further, between described elastomeric damper member and damping spring, by the separation sleeve that is coated at elastomeric damper member, isolate; Adopt the separation sleeve structure, have integrity preferably, installing/dismounting more for convenience, and is realized comprehensive isolation in a circumferential direction, avoid in vehicle heavy duty or while being subject to impacting damping spring rubber bushing is caused to shear fracture, guarantee the working life of elastomeric damper member;
Further, described elastomeric damper member is that maximum volume and the described elastomeric damper member that overall structure and its volume are less than described separation sleeve extended separation sleeve to head end vertically; Head end refers to an end of meeting to the damper cylinder; The maximum volume that the volume of elastomeric damper member is less than described separation sleeve can guarantee that elastomeric damper member can fully be out of shape under larger impact force, and can be contained in fully in separation sleeve after maximum distortion, avoid separation sleeve to elastomeric damper member shear fracture, also further avoid the destruction of being sheared by damping spring or rub; Make the deformation quantity of elastomeric damper member effectively to control, guarantee the maximum functional stroke of vibration damper.
Further, described elastomeric damper member at least forms to the diminishing cone structure of head end at the part periphery near head end; Because head end extends separation sleeve, cone structure not only can increase and damping spring between distance, avoid being subject to the destruction of damping spring, can also guarantee under the prerequisite of enough axial lengths, than under heavy load, at first the distortion that withstands shocks, and the rigidity after making to impact increases gradually, improves travelling comfort; Simultaneously, cone structure provides the larger larger distortion of formation after being impacted and under the separation sleeve constraint.
Further, described separation sleeve end radially outwards bending form the annular edge of a wing, piston-rod end is provided with at least at the fixing spring seat of damping spring pretightening force direction, the described annular edge of a wing is pressed on spring seat by the pretightening force of damping spring; Simple mounting structure, be beneficial to dismounting, and can guarantee the stable installation of separation sleeve.
Further, the part periphery that described elastomeric damper member is positioned near its end is cylindrical structural, and this cylindrical structural is against spring seat and is positioned at separation sleeve, and this cylindrical structural is beneficial to the integral rigidity while guaranteeing shock resistance, improves load-carrying ability; Simultaneously, can stablize axis, leading role while increasing motion, avoid forming deflecting torque, guarantees working life.
Further, the ratio of the axial length that the cylindrical structural of described elastomeric damper member is shared is less than 2/5, this proportion can guarantee between two-part of elastomeric damper member cooperative bearing and guarantee stressed directional stability, when reducing larger impact endurance test shock, make and control maximum deformation quantity formation quantification.
Further, elastomeric damper member forms mouthful large taper mouth gradually for the inner circle through piston rod near end, makes elastomeric damper member have enough Internal Hole Deformation spaces, avoids extruding or friction to form and destroy it.
Further, described spring seat is positioned at its cylindrical and has the radial opening groove; Avoided ponding, silting on the destruction of its integral body of damping and the impact of performance.
Further, described elastomeric damper member is that rubber material is made; Also can increase endurance quality such as polyurethane commonly used is designed to rubber material, have that hardness is high, intensity good, a high elasticity, high wear resistance, tear-resistant, ageing-resistant, guarantee performance and the working life of elastomeric damper member.
Beneficial effect of the present invention: vibration damper of the present invention, employing forms the structure of isolation between damping spring and elastomeric damper member, can make elastomeric damper member be subject to impacting when compression-expansion occurs, can not contact with damping spring, effectively avoid damping spring to cause shear fracture to elastomeric damper member, guarantee the working life of elastomeric damper member, and can make elastomeric damper member increase gradually rigidity when being subject to impacting, excessively mild, and then eliminate and impact; Can effectively control the deformation quantity of elastomeric damper member, guarantee the maximum functional stroke of vibration damper, the fault such as avoid interfering, can in equal range situation, greatly improve the maximum load capacity value, increase safety reliability; The present invention is simple in structure, easily manufactured, with low cost.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
The structural representation that Fig. 2 is isolating cylinder of the present invention.
The structural representation that Fig. 3 is spring seat of the present invention;
Fig. 4 is the elastomeric damper member structural representation.
Embodiment
Fig. 1 is structural representation of the present invention; The structural representation that Fig. 2 is isolating cylinder of the present invention; The structural representation that Fig. 3 is spring seat of the present invention, Fig. 4 is the elastomeric damper member structural representation, as shown in the figure, a kind of buffering type shock absorber assembly provided by the invention, at least comprise damper cylinder 1 and piston assembly, the piston rod 2 that is coated at damper cylinder 1 and piston assembly is provided with damping spring 3, and as shown in the figure, damping spring 3 integral sleeve are in damper cylinder 1 and piston rod 2 cylindricals; Be coated at piston rod and be provided with elastomeric damper member 4 between damping spring and piston rod 2, isolation between described elastomeric damper member 4 and damping spring 3; The mode of isolation can adopt existing any mechanical structure that can realize isolation, comprises isolation net etc.; The elastomeric damper member of the integral body that elastomeric damper member 4 refers generally to, such as whole rubber parts.
In the present embodiment, between described elastomeric damper member 4 and damping spring 3, by the separation sleeve 5 that is coated at elastomeric damper member, isolate; Adopt separation sleeve 4 structures, have integrity preferably, installing/dismounting more for convenience, and is realized comprehensive isolation in a circumferential direction, avoid in vehicle heavy duty or while being subject to impacting damping spring rubber bushing is caused to shear fracture, guarantee the working life of elastomeric damper member;
In the present embodiment, described elastomeric damper member 4 is extended separation sleeve 4 to head end vertically for maximum volume and described elastomeric damper member 4 that overall structure and its volume are less than described separation sleeve 5; Head end refers to an end of meeting to damper cylinder 1, extends separation sleeve 4 and could realize effectively the bumper and absorbing shock under greater impact power; The maximum volume that the volume of elastomeric damper member 4 is less than described separation sleeve 5 can guarantee that elastomeric damper member 4 can fully be out of shape under larger impact force, and can be contained in separation sleeve 5 fully after maximum distortion, avoid 5 pairs of elastomeric damper member 4 shear fracture of separation sleeve, also further avoid the destruction of being sheared by damping spring or rub; Make the deformation quantity of elastomeric damper member effectively to control, guarantee the maximum functional stroke of buffering type shock absorber assembly.
In the present embodiment, described elastomeric damper member 4 at least forms to the diminishing cone structure 4a of head end at the part periphery near head end; Because head end extends separation sleeve 5, cone structure 4a not only can increase and damping spring 3 between distance, avoid being subject to the destruction of damping spring 3, can also guarantee under the prerequisite of enough axial lengths, than under heavy load, at first the distortion that withstands shocks, and the rigidity after making to impact increases gradually, improves travelling comfort; Simultaneously, cone structure provides the larger larger distortion of formation after being impacted and under the separation sleeve constraint.
In the present embodiment, described separation sleeve 5 ends radially outwards bending form the annular edge of a wing 6, piston rod 2 ends are provided with at least the spring seat 7 fixing in damping spring pretightening force direction, for supporting damping spring 3 and making it to form pretightening force; As shown in the figure, spring seat 7 is connected in piston rod by nut 8; The described annular edge of a wing 6 is pressed on spring seat 7 by the pretightening force of damping spring 3; Simple mounting structure, be beneficial to dismounting, and can guarantee the stable installation of separation sleeve; As shown in the figure, spring seat 7 is installed on piston rod 2 by nut 8.
In the present embodiment, the part periphery that described elastomeric damper member 4 is positioned near its end is cylindrical structural, and certainly, the diameter of this cylindrical structural is identical with the large footpath of cone structure, does not repeat them here; This cylindrical structural is against spring seat and is positioned at separation sleeve 5, and this cylindrical structural is beneficial to the integral rigidity while guaranteeing shock resistance, improves load-carrying ability; Simultaneously, can stablize axis, increase leading role, avoid forming deflecting torque, guarantee working life; As shown in the figure, the axial length of cylindrical structural can not surpass 2/3rds of separation sleeve 5 axial lengths, and avoiding can't steady-state deformation.
In the present embodiment, the ratio of the axial length of the shared elastomeric damper member 4 of the cylindrical structural of described elastomeric damper member 4 is less than 2/5, and the present embodiment adopts 1/3; This proportion can guarantee between two-part of elastomeric damper member cooperative bearing and guarantee stressed directional stability, when reducing larger impact endurance test shock, makes and controls maximum deformation quantity and form and quantize.
In the present embodiment, elastomeric damper member 4 forms mouthful large cone shape hole 4b gradually for the inner circle through piston rod 2 near end, near head end, is straight hole, makes elastomeric damper member have enough Internal Hole Deformation spaces, reduce friction and easily distortion, avoid extruding or friction to form and destroy it.
In the present embodiment, described spring seat 7 is positioned at its cylindrical and has radial opening groove 7a; Avoided ponding, silting on the destruction of its integral body of damping and the impact of performance.
In the present embodiment, described elastomeric damper member is that rubber material is made; Also can increase endurance quality such as polyurethane commonly used is designed to rubber material, have that hardness is high, intensity good, a high elasticity, high wear resistance, tear-resistant, ageing-resistant, guarantee performance and the working life of elastomeric damper member; Separation sleeve 5 material requirements have certain high strength, generally adopt 10 or 45 steel to get final product, this separation sleeve 5 when elastomeric damper member 4 is subject to compression swelling, protect its avoid being subject to spring is pressed and shear fracture, guarantee that damping spring works under normal state simultaneously.
Finally explanation is, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technological scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a vibration damper, comprise damper cylinder and piston assembly, the piston rod that is coated at damper cylinder and piston assembly is provided with damping spring, it is characterized in that: be coated at piston rod and be provided with elastomeric damper member between damping spring and piston rod, isolate between described elastomeric damper member and damping spring.
2. vibration damper according to claim 1 is characterized in that: between described elastomeric damper member and damping spring by being coated at the separation sleeve isolation of elastomeric damper member.
3. vibration damper according to claim 2 is characterized in that: described elastomeric damper member is that maximum volume and the described elastomeric damper member that overall structure and its volume are less than described separation sleeve extended separation sleeve to head end vertically.
4. vibration damper according to claim 3, it is characterized in that: described elastomeric damper member at least forms to the diminishing cone structure of head end at the part periphery near head end.
5. vibration damper according to claim 4, it is characterized in that: the radially outside bending of described separation sleeve end forms the annular edge of a wing, piston-rod end is provided with at least at the fixing spring seat of damping spring pretightening force direction, and the described annular edge of a wing is pressed on spring seat by the pretightening force of damping spring.
6. vibration damper according to claim 5, it is characterized in that: the part periphery that described elastomeric damper member is positioned near its end is cylindrical structural, and this cylindrical structural is against spring seat and is positioned at separation sleeve.
7. vibration damper according to claim 6, it is characterized in that: the ratio of the axial length that the cylindrical structural of described elastomeric damper member is shared is less than 2/5.
8. vibration damper according to claim 7, it is characterized in that: elastomeric damper member forms mouthful large taper mouth gradually for the inner circle through piston rod near end.
9. vibration damper according to claim 8, it is characterized in that: described spring seat is positioned at its cylindrical and has the radial opening groove.
10. vibration damper according to claim 9, it is characterized in that: described elastomeric damper member is that rubber material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446394.9A CN103470678B (en) | 2013-09-26 | 2013-09-26 | Damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310446394.9A CN103470678B (en) | 2013-09-26 | 2013-09-26 | Damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103470678A true CN103470678A (en) | 2013-12-25 |
| CN103470678B CN103470678B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310446394.9A Active CN103470678B (en) | 2013-09-26 | 2013-09-26 | Damper |
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| Country | Link |
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| CN (1) | CN103470678B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757802A (en) * | 2018-07-04 | 2018-11-06 | 潘雲生 | A kind of pump drive system damping device |
| CN111536189A (en) * | 2020-04-22 | 2020-08-14 | 南京航空航天大学 | Oil gas and expanding combined type crash-resistant buffer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814010Y (en) * | 2005-08-10 | 2006-09-06 | 万向钱潮股份有限公司 | Dustproof vibration-damper |
| US20070017761A1 (en) * | 2005-07-22 | 2007-01-25 | Basf Corporation | Jounce assembly for a suspension system |
| CN201265620Y (en) * | 2008-08-24 | 2009-07-01 | 比亚迪股份有限公司 | Vibration absorber |
| CN101929519A (en) * | 2009-06-19 | 2010-12-29 | 株式会社昭和 | Hydraulic buffer |
| CN203500359U (en) * | 2013-09-26 | 2014-03-26 | 重庆隆鑫机车有限公司 | Cushion type shock absorber assembly |
-
2013
- 2013-09-26 CN CN201310446394.9A patent/CN103470678B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070017761A1 (en) * | 2005-07-22 | 2007-01-25 | Basf Corporation | Jounce assembly for a suspension system |
| CN2814010Y (en) * | 2005-08-10 | 2006-09-06 | 万向钱潮股份有限公司 | Dustproof vibration-damper |
| CN201265620Y (en) * | 2008-08-24 | 2009-07-01 | 比亚迪股份有限公司 | Vibration absorber |
| CN101929519A (en) * | 2009-06-19 | 2010-12-29 | 株式会社昭和 | Hydraulic buffer |
| CN203500359U (en) * | 2013-09-26 | 2014-03-26 | 重庆隆鑫机车有限公司 | Cushion type shock absorber assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757802A (en) * | 2018-07-04 | 2018-11-06 | 潘雲生 | A kind of pump drive system damping device |
| CN111536189A (en) * | 2020-04-22 | 2020-08-14 | 南京航空航天大学 | Oil gas and expanding combined type crash-resistant buffer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103470678B (en) | 2016-08-31 |
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