CN101737446B - Damper - Google Patents
Damper Download PDFInfo
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- CN101737446B CN101737446B CN2009102640105A CN200910264010A CN101737446B CN 101737446 B CN101737446 B CN 101737446B CN 2009102640105 A CN2009102640105 A CN 2009102640105A CN 200910264010 A CN200910264010 A CN 200910264010A CN 101737446 B CN101737446 B CN 101737446B
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- cylinder body
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- pipe
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Abstract
The invention relates to a damper, which is applied to tail end release. A cylinder body of the damper comprises a circular tube and a polygonal tube connected to the tail end of the circular tube or an elliptical tube, or a double-layer tube with at least one groove between walls thereof, or a tubular body of which an inner wall is provided with convex ribs. A piston in the cylinder body is sleeved with a sealing ring; the outer circle of the sealing ring is provided with basic flow grooves suitable for forming basic flow passages on the sealing ring and trimmed edges suitable for forming variable flow passages on the sealing ring; the sectional area of the variable flow passage can be correspondingly reduced along with the decrease of an external force applied to the damper; and no basic flow passage is formed on the piston. As the outer circle of the sealing ring is provided with the basic flow passages and the variable flow passages, when the damper is used, the sectional area of the variable flow passage can be correspondingly reduced along with the decrease of the external force applied to the damper, while the sectional area of the basic flow passage is invariable substantially; and the damper has the advantages of impact resistance, stable damping force (when the external force applied to the damper is invariable), no idle stroke, stable running, silence and the like.
Description
Technical field
The present invention relates to a kind of damper, specifically is a kind of damper that damping force can discharge fast when damper moves near end.
Background technique
See Fig. 4, Chinese patent application numbers 200920036191.1 discloses a kind of damper, it comprises cylinder body 1, be located at the shutoff 2 of cylinder body 1 end, be located at sealing guide sleeve 3, compressing gasbag 4, the hydraulic fluid 5 of cylinder body 1 front end, piston 6, piston rod 7 and the link 8 of band damp channel, and the mobile piston of band damp channel (being basic flow channels) is divided into forward and backward two chambers with the cylinder body chamber.When moving near end, the piston 6 of above-mentioned damper, cause its terminal closure effect not good because damping force is constant substantially.
General damper adopts in the energy-absorbing sponges cover air compression to absorb because of piston rod and enters the volume that cylinder body has more.Exist deficiency in long-term the use, the air in the energy-absorbing sponges cover is very easily gone in the hydraulic fluid, causes the oil gas mixing, moves not steadily, is prone to idle running and sends the situation of sound.
Summary of the invention
The technical problem to be solved in the present invention provide a kind of simple in structure, shock-resistant, operate steadily, quiet, terminal closure effect is suitable for the terminal damper that discharges preferably.
In order to solve the problems of the technologies described above, the invention provides and be suitable for the terminal damper that discharges, the cylinder body of damper comprises: pipe and be connected in the polygonal pipe of pipe end or oval pipe or wall between be provided with the bimetallic tube of at least one groove or the body of inner wall belt convex tendon.
Further, for the flow channels that makes damper is difficult for blocked and the damping force of damper is increased with external force, be with seal ring on the piston in the described cylinder body, the outer ring of sealing circle is provided with: chute is crossed on the basis that is suitable for formation base flow channels on described seal ring, with the side cut that is suitable for forming variable flow channels on described seal ring, the sectional area of this variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper; Foundation-free flow channels on the described piston.Because the outer ring of seal ring is provided with basic flow channels and variable flow channels, during use, the sectional area of variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper, and the sectional area of basic flow channels is constant substantially or diminish slightly when the suffered external force of damper is big.
As the another kind of scheme of seal ring, the outer ring of seal ring is provided with the side cut that is suitable for forming variable flow channels on seal ring, and the sectional area of this variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper; Piston is provided with basic flow channels.
Further, the upper cover of piston rod in the described cylinder body is useful on and absorbs the air that makes in the cylinder body so that the composite air bag of hydraulic oil in the cylinder body and air separation.
Further, described composite air bag is by rubber-plastic foamed moulding, and it comprises 1,000 to 100,000 ballonets.Because the ballonet number of composite air bag is more, generally about several ten thousand, even if, also do not influence its using effect so the part ballonet breaks, hydraulic oil and air separation effect are better, can guarantee that damper operates steadily, prevents idle running and sends the situation of sound.Described composite air bag also can adopt 1,000 to 100,000 ballonet molding bondeds.
Further, for the gas in the chamber of the side that reduces to be squeezed in the damper cylinder body or fluid pressure the influence of the distortion of chute is crossed on described basis, it is V-shaped groove, U-groove bevel or curve bath that chute is crossed on described basis.
Further, described side cut is lineal shape or camber line shape, dwindles the sectional area of variable flow channels when the suffered external force of damper is big as early as possible, and in described external force during greater than certain threshold values, the sectional area vanishing of described variable flow channels.
Technique scheme of the present invention has the following advantages compared to existing technology: the terminal release tech that (1) the present invention adopts is: when damper runs near end, the area of passage of damper becomes suddenly big and damping force reduces, make overcurrent speed reach the quick releasing effect of damping force sooner, guarantee the closure effect of product end.(2) adopt composite air bag, because that independent air bags is made height, processed complex, manufacturing efficiency is low, the composite air bag of new material is easy to process, manufacturing efficiency is high, cost is lower and impact effect not.Because the ballonet number of composite air bag is more, generally about several ten thousand, even if so the part ballonet breaks, also do not influence its using effect.With respect to the scheme that adopts single or several air bags, behind one or more balloon rupture, use can cause obvious influence to product.When (3) using the damper use of seal ring of the present invention, piston in the cylinder body of damper is divided into two chambers with cylinder body, the outer ring of seal ring is provided with basic flow channels and variable flow channels, damper with respect to existing single basic flow channels, the flow channels of using the damper of seal ring of the present invention has at least 2, so be difficult for blocked; In addition, when the suffered external force of damper increases suddenly, gas or fluid pressure in the chamber of the side that is squeezed increase suddenly, the inner ring pressure that makes seal ring is suddenly greater than outer ring pressure, thereby described side cut portion is outwards expanded, and then the sectional area that makes variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper, therefore the damping force of damper increases with external force, simultaneously damping force can diminish and diminishes with external force, make the velocity of displacement of piston rod be subjected to the influence of external force variation suddenly less, and the speed that the velocity of displacement of piston rod changes can be by controlling described variable flow channels the factors such as initial size of sectional area control, finally to guarantee damping, satisfy the requirement of particular application, have shock-resistant simultaneously, damping force is stablized (when the suffered external force of damper is constant), no idle running, operate steadily, advantage such as quiet.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below the specific embodiment and in conjunction with the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the cross-sectional view of the damper among the embodiment;
Fig. 2 is the perspective view of composite air bag among Fig. 1;
Fig. 3 is the perspective cutaway view, of cylinder body 1 among Fig. 1;
Fig. 4 is the cross-sectional view of damper of the prior art;
Fig. 5 is the perspective view that the piston among the embodiment 1 is used seal ring;
Fig. 6 increases the corresponding structural representation that diminishes for the variable flow channels of seal ring among Fig. 5 in the suffered external force of damper;
Fig. 7 is the perspective view that another kind of piston is used seal ring among the embodiment 1;
Fig. 8 increases the corresponding structural representation that diminishes for the variable flow channels of seal ring among Fig. 7 in the suffered external force of damper;
Fig. 9 is the perspective view that the third piston among the embodiment 2 is used seal ring;
Figure 10 increases the corresponding structural representation that diminishes for the variable flow channels of seal ring among Fig. 9 in the suffered external force of damper;
Figure 11 is the perspective view that the 4th kind of piston among the embodiment 3 used seal ring;
Figure 12 increases the corresponding structural representation that diminishes for the variable flow channels of seal ring among Figure 11 in the suffered external force of damper.
Embodiment
(embodiment 1)
See Fig. 1-3, the cylinder body 1 that is suitable for the terminal damper that discharges of present embodiment comprises: pipe 1-2 and the polygonal pipe 1-1 that is connected in pipe 1-2 end; The length of polygonal pipe 1-1 accounts for about 20% of cylinder body 1 length.Be with composite air bag 4 on the piston rod 7 in the cylinder body 1.Composite air bag 4 is by rubber-plastic foamed moulding, and it comprises 20,000 ballonets.The blocking component 2 of described cylinder body 1 end comprises: the cross section is I-shaped shutoff 2-1, be placed in the Sealing 2-2 in the groove of shutoff 2-1 and be located at the steel ball 2-3 of the oil drain passage 2-4 end on the shutoff 2-1 central shaft; Shutoff 2-1 is provided with the hangnail with cylinder body 1 tip engages.Described oil drain passage 2-4 is used for discharging the unnecessary hydraulic fluid of damper production and assembly process, and steel ball 2-3 is used to stop up this oil drain passage 2-4.Be with the seal ring a of band flow channels on this piston 6.
See Fig. 1 and 3, the outer tube of damper is made up of two-part, main body is pipe 1-2, terminal pipe is that polygonal pipe 1-1 is (as the quadrilateral pipe, the pentagon pipe, hexagonal tube, arbitrary polygons such as Heptagon pipe), when piston moves in pipe 1-2, the seal ring a of piston and cylinder body 1 inwall (being the damp tube inwall) have good seal action, fluid in the cylinder body 1 can only flow from the flow channels of described setting, when terminal polygonal pipe 1-1 place is arrived in piston motion, because of the seal ring a of circle and the tangent seal action that do not reach of inwall of polygonal pipe 1-1, area of passage increases suddenly, and damping force significantly reduces suddenly, to reach the effect that damping force discharges.
See Fig. 5-8 and 11, the piston of present embodiment is placed in seal ring a on the piston 6 of foundation-free flow channels, and sealing circle a is a rectangular loop, can be that the cross section is circle or polygonal seal ring in other mode of execution.
The side cut a2 of chute a1 and variable flow channels is crossed on the basis that the outer ring of seal ring a is provided with basic flow channels, and the sectional area of this variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper.Described side cut a2 is lineal shape or camber line shape.
During use, when the suffered external force of damper increases suddenly, gas or fluid pressure in the chamber of the side that is squeezed increase suddenly, the inner ring pressure that makes seal ring is suddenly greater than outer ring pressure, thereby described side cut portion is outwards expanded, and then make the sectional area of variable flow channels be suitable for increasing and corresponding diminishing, so the damping force of damper increases with external force with the suffered external force of damper, when external force during, only there is the basis to cross chute a1 conducting in the damper greater than certain value; Simultaneously damping force diminishes with external force and diminishes, make the velocity of displacement of piston rod 7 be subjected to the influence of external force variation suddenly less, and the velocity of displacement of piston rod 7 changes the factors such as initial size of the sectional area by controlling described variable flow channels of I greatly and controls, those skilled in the art only need be by the test of limited number of time, and the excursion that described piston rod 7 can be subjected to external force to change the speed of moving that causes suddenly is controlled in the default scope.
See Fig. 5, it is V-shaped groove or curve bath as shown in Figure 7 or U-groove bevel that chute a1 is crossed on described basis.
See Fig. 5, the alternate setting of chute a1 is crossed on described side cut a2 and described basis, or adjacent setting as shown in Figure 7, or adjacent and alternate setting.
See Fig. 5, it is 2 that chute a1 is crossed on described basis, and described side cut a2 is 2; Or as shown in Figure 7, it is 4 that chute a 1 is crossed on described basis, and described side cut a2 is 4.
(embodiment 2)
On embodiment 1 basis, present embodiment has following distortion: the oval pipe that is that is connected in pipe 1-2 end.When piston moves in pipe 1-2, the seal ring a on the piston 6 and the inwall of damp tube have good seal action, fluid can only flow from the flow channels of described setting, when piston 6 moves to terminal oval pipe place, because of not playing seal action between the inwall of seal ring a and oval pipe, cause area of passage to increase suddenly, damping force significantly reduces suddenly, thereby reaches the effect that damping force discharges.
See Fig. 9, the piston of present embodiment has following distortion with seal ring a: be located at a plurality of convex tendon a3 on the outer ring sidewall of seal ring a, the angle of the outer ring cambered surface of this convex tendon a3 and seal ring a constitutes described basis and crosses chute, and the outer ring cambered surface of seal ring a is described variable flow channels.Figure 10 is the suffered external force of damper when increasing, the malformation figure of seal ring a, and this moment, the outer ring cambered surface of seal ring a outwards expanded, and the sectional area of described variable flow channels diminishes.
(embodiment 3)
On embodiment 1 basis, present embodiment has following distortion: the bimetallic tube that is that is connected in pipe 1-2 end, this bimetallic tube comprise outer wall be provided with the interior pipe of at least one groove and be placed in outer tube on the pipe (this section outer tube still is the extension of pipe 1-2, the external diameter of its internal diameter and interior pipe is identical), groove both ends open on the interior pipe communicates with the tube chamber of cylinder body 1, this inner tube diameter is identical with the internal diameter of pipe 1-2, when piston 6 moves in pipe 1-2, the seal ring a of piston 6 and the inwall of damp tube have good seal action, fluid can only flow from described flow channels, when piston 6 moves to terminal bimetallic tube place, groove in the bimetallic tube constitutes new flow channels, area of passage increases suddenly, and damping force significantly reduces suddenly, thereby reaches the effect that damping force discharges.
See Figure 11-12, the damper piston of present embodiment is a rectangular loop with seal ring a, can be that the cross section is circle or polygonal seal ring in other mode of execution.
The outer ring of seal ring a only is provided with the side cut a2 of variable flow channels, the foundation-free flow channels, and piston 6 is provided with the through hole as basic flow channels; The sectional area of this variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper.Described side cut a2 is lineal shape or camber line shape.See Figure 11, described side cut a2 is 2.In the using process, the sectional area of basic flow channels is constant substantially.
During use, when the suffered external force of damper increases suddenly, gas or fluid pressure in the chamber of the side that is squeezed increase suddenly, the inner ring pressure that makes seal ring is suddenly greater than outer ring pressure, thereby described side cut portion is outwards expanded (seeing Figure 12), and then make the sectional area of variable flow channels be suitable for increasing and corresponding diminishing, so the damping force of damper increases with external force with the suffered external force of damper, when external force during, the flow channels conducting on the piston 6 is only arranged in the damper greater than certain value; In addition, damping force also diminishes with external force and diminishes, and the influence that makes the velocity of displacement of piston rod 7 changed suddenly by external force is less, has finally guaranteed damping, has satisfied the requirement of particular application.
(embodiment 4)
On embodiment 1 basis, present embodiment has following distortion: be connected in pipe 1-2 end and be the body of inner wall belt convex tendon.When piston moves in pipe 1-2, the seal ring a of piston 6 and the inwall of damp tube have good seal action, fluid can only flow from described flow channels, when piston 6 moves to end the body of convex tendon is arranged, convex tendon makes the circular seal ring a and the inboard wall of tube body of band convex tendon lose sealing, area of passage is increased suddenly, and damping force significantly reduces suddenly, thereby reaches the effect that damping force discharges.
Obviously, the foregoing description only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (10)
1. damper, it is characterized in that: the cylinder body of damper (1) comprising: pipe (1-2) and be connected between the terminal polygonal pipe (1-1) of pipe (1-2) or oval pipe or wall and be provided with the bimetallic tube of at least one groove or the body of inner wall belt convex tendon;
Be with seal ring (a) on the piston (6) in the cylinder body (1), the outer ring of sealing circle (a) is provided with: the basis that is suitable for the formation base flow channels is crossed chute (a1) and is suitable for forming the side cut (a2) of variable flow channels, and the sectional area of this variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper; Described piston (6) is gone up the foundation-free flow channels.
2. damper according to claim 1 is characterized in that: be with composite air bag (4) on the piston rod (7) in the described cylinder body (1).
3. damper according to claim 2 is characterized in that: described composite air bag (4) is that it comprises 1,000 to 100,000 ballonets by rubber-plastic foamed moulding.
4. damper according to claim 3 is characterized in that: the terminal blocking component (2) of described cylinder body (1) comprising: the cross section is I-shaped shutoff (2-1), be placed in the Sealing (2-2) in the groove of shutoff (2-1) and be located at the steel ball (2-3) of oil drain passage (2-4) end on shutoff (2-1) central shaft; Shutoff (2-1) is provided with the hangnail with cylinder body (1) tip engages.
5. damper according to claim 1 is characterized in that: it is V-shaped groove, U-groove bevel or curve bath that chute (a1) is crossed on described basis.
6. damper according to claim 5 is characterized in that: described side cut (a2) is crossed the adjacent and/or alternate setting of chute (a1) with described basis.
7. damper according to claim 1 is characterized in that: described basis is crossed chute (a1) and is 1-6, and described side cut (a2) is 1-4, and cut edge (a2) is lineal shape or arc.
8. damper, it is characterized in that: the cylinder body of damper (1) comprising: pipe (1-2) and be connected between the terminal polygonal pipe (1-1) of pipe (1-2) or oval pipe or wall and be provided with the bimetallic tube of at least one groove or the body of inner wall belt convex tendon;
Be with seal ring (a) on the piston (6) in the cylinder body (1), the outer ring of seal ring (a) is provided with the side cut (a2) of variable flow channels, and the sectional area of this variable flow channels is suitable for increasing and corresponding diminishing with the suffered external force of damper; Piston (6) is provided with basic flow channels.
9. damper according to claim 8 is characterized in that: described side cut (a2) is 1-4, and cut edge (a2) is lineal shape or arc.
10. it is characterized in that according to Claim 8 or 9 described dampers: be with composite air bag (4) on the piston rod (7) in the described cylinder body (1);
Described composite air bag (4) is by rubber-plastic foamed moulding, and it comprises 1,000 to 100,000 ballonets;
The terminal blocking component (2) of described cylinder body (1) comprising: the cross section is I-shaped shutoff (2-1), be placed in the Sealing (2-2) in the groove of shutoff (2-1) and be located at the steel ball (2-3) of oil drain passage (2-4) end on shutoff (2-1) central shaft; Shutoff (2-1) is provided with the hangnail with cylinder body (1) tip engages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102640105A CN101737446B (en) | 2009-12-29 | 2009-12-29 | Damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102640105A CN101737446B (en) | 2009-12-29 | 2009-12-29 | Damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101737446A CN101737446A (en) | 2010-06-16 |
| CN101737446B true CN101737446B (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102640105A Expired - Fee Related CN101737446B (en) | 2009-12-29 | 2009-12-29 | Damper |
Country Status (1)
| Country | Link |
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| CN (1) | CN101737446B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733701B (en) * | 2011-04-01 | 2016-02-17 | 许姜德 | A kind of damper with metal shell |
| CN103758915B (en) * | 2013-12-30 | 2016-02-17 | 中国人民解放军92537部队 | Proportional zoom type impact-resistant isolation device |
| CN108081243B (en) * | 2017-08-24 | 2021-02-26 | 深圳市罗伯医疗科技有限公司 | Walking-aid knee joint actuator and walking-aid robot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19959107A1 (en) * | 1999-03-20 | 2000-09-21 | Suspa Compart Ag | Automotive steering wheel column vibration damper allows compression without sacrifice of rigid properties in normal operation |
| CN201162799Y (en) * | 2008-03-05 | 2008-12-10 | 宁波南方减震器制造有限公司 | Vibration absorber capable of preventing shock-absorbing oil from generating foam |
| CN101429984A (en) * | 2008-12-01 | 2009-05-13 | 江阴强顺科技有限公司 | Hydraulic damper with excellent leak tightness |
| CN201568512U (en) * | 2009-12-29 | 2010-09-01 | 杜成华 | Damper suitable for tail end releasing |
-
2009
- 2009-12-29 CN CN2009102640105A patent/CN101737446B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19959107A1 (en) * | 1999-03-20 | 2000-09-21 | Suspa Compart Ag | Automotive steering wheel column vibration damper allows compression without sacrifice of rigid properties in normal operation |
| CN201162799Y (en) * | 2008-03-05 | 2008-12-10 | 宁波南方减震器制造有限公司 | Vibration absorber capable of preventing shock-absorbing oil from generating foam |
| CN101429984A (en) * | 2008-12-01 | 2009-05-13 | 江阴强顺科技有限公司 | Hydraulic damper with excellent leak tightness |
| CN201568512U (en) * | 2009-12-29 | 2010-09-01 | 杜成华 | Damper suitable for tail end releasing |
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| Publication number | Publication date |
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| CN101737446A (en) | 2010-06-16 |
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Address after: 225711 Zhouzhuang, Taizhou, Xinghua Town, Century Avenue, No. 1, No. Patentee after: Du Chenghua Address before: Li Gang Zhen Lu Bu Gang Cun Wei Jiangsu city of Jiangyin province Shunxing 214400 No. 26 Patentee before: Du Chenghua |
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Granted publication date: 20110629 Termination date: 20151229 |
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