CN201666069U - Precise micropore hydraulic damper - Google Patents
Precise micropore hydraulic damper Download PDFInfo
- Publication number
- CN201666069U CN201666069U CN2009200345232U CN200920034523U CN201666069U CN 201666069 U CN201666069 U CN 201666069U CN 2009200345232 U CN2009200345232 U CN 2009200345232U CN 200920034523 U CN200920034523 U CN 200920034523U CN 201666069 U CN201666069 U CN 201666069U
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- piston
- via hole
- hydraulic damper
- piston cylinder
- hole
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Abstract
The utility model relates to a precise micropore hydraulic damper, which comprises a piston cylinder (1), wherein a piston (5) and a piston shaft (6) fixedly connected with the piston are arranged in the piston cylinder; and a two-way damping liquid through hole (7) and a one-way damping liquid through hole (8) are arranged on the piston (5) axially. The improvement is that the two-way damping liquid through hole is the tapered hole or the stepped hole and is formed by precise injection molding by the piston (5), thereby enhancing the strength of micropores and reducing the difficulty of manufacturing an injection molding die under the premise that the circulation areas of the micropores can not be changed, so that the precise injection molding can be realized successfully. The improvement of the utility model can realize the processing of the micropores and the control precision and only needs one-off die investment, therefore, the production cost is low, the repeatability is good, and the quality can be ensured. Due to the further improvement of the utility model, the hydraulic damper has the different damping speeds of the reciprocating travel, so that the hydraulic damper can be particularly applied to a buffering hinge of a door and a window.
Description
Technical field
The utility model belongs to hydraulic damping cushion technique field, and specifically, it is a kind of accurate micropore hydraulic damper.Be mainly used in the hinge of top-grade furniture door, window, it by hydraulic damping regulate, speed in the control gate, window open and close stroke, reach reduce noise, safety steadily, the purpose of shock absorbing automatically.
Background technology
Hydraulic damper mainly comprises a hydraulic cavities and pistons reciprocating in hydraulic cavities, piston is divided into two chambeies with hydraulic cavities, on piston, be provided with the damping fluid via hole, motion along with piston, damping fluid in the hydraulic cavities flows to another chamber by the via hole on the piston from a chamber, by the motion formation damping of damping fluid via hole to piston.Can regulate the flow of damping fluid by the size of regulating the damping fluid via diameter, and then damping speed that can the regulating piston stroke.If this hydraulic damper is used for door, window butt, its installing space is very limited, so require the volume of hydraulic damper very little, because volume is little, the damping fluid via hole is just littler on the piston, be generally about 0.01～0.3mm, thin as hairline, also thin several times of the ratio hairlines of aperture minimum.Therefore, in piston stroke one regularly, want accurately to control the size that its speed (promptly accurately finishing its stroke within a certain period of time) will accurately be controlled damping fluid via hole aperture, this is a very thing of difficulty for machining, adopt laser drilling exactly, also be difficult for realizing, both made and realized, also very expensive.For this reason, the someone wants to increase the aperture with suitably increasing liquid viscosity, difficulty of processing is reduced, but improve the obstruction that damping hole can appear in damping fluid viscosity, and product quality is seriously descended, therefore, and the effective measures that this neither address the above problem.Up to the present, because the micropore punching is difficult to realize, the more difficult control of its precision,, this hydraulic damper is applied so being difficult on door, the window butt.
Summary of the invention
The purpose of this utility model is at the problem in the prior art, and a kind of accurate micropore hydraulic damper is provided, to realize small damping fluid via hole processing of hydraulic damper and precision control.
For achieving the above object, the technical solution of the utility model is as follows:
It comprises a piston cylinder, the front end of this piston cylinder is a closed or to be provided with sealing stifled, its tail end is provided with spindle guide to joint ring, in described piston cylinder, be provided with a piston and a axis of the piston that connects firmly with this piston, before described piston is divided into the piston cylinder inner chamber, latter two minute the chamber, the afterbody of described the axis of the piston stretches out outside the piston cylinder to the sealing of joint ring by spindle guide, on the circumferential wall of piston, have the sealing ring mounting groove, and in sealing circle mounting groove, piston packing is housed, in described piston cylinder inner chamber, be filled with damping fluid, on described piston, be provided with a bidirectional damper liquid via hole that axially is provided with at least, its improvements are: this bidirectional damper liquid via hole is bellmouth or stepped hole, and the moulding by the precise injection molding of piston.
The further improved technical scheme of the utility model is as follows:
At least be provided with a unidirectional damping liquid via hole that axially is provided with on described piston, the blind end of this unidirectional damping liquid via hole communicates with the mounting groove of piston packing, and described sealing mounting groove and sealing ring are loose fit.
The minimum diameter of described bidirectional damper liquid via hole is in 0.01mm～0.3mm scope.
On the contact surface of described piston and the axis of the piston riveted joint pad, be provided with a guiding gutter.
By technique scheme as can be seen, the utility model is with tapered hole of damping fluid Via Design or stepped hole, can guarantee under the constant prerequisite of micropore circulation area like this, strengthen the intensity of micropore and reduce the difficulty that injection mold is made, precise injection molding can be realized smoothly.This practicality has realized to the processing of micropore and the control of its precision with above-mentioned improvement that newly it only needs disposable mould input, and cost of production is low, good reproducibility, and quality can guarantee.The further improvement of the utility model can make this hydraulic damper have the damping speed of different reciprocating strokes, makes its particularly suitable door, window butt.
Description of drawings
Fig. 1 is the utility model overall structure sectional view.
Fig. 2 is one of piston structure sectional view.
Fig. 3 is Fig. 2 right view.
Fig. 4 is Fig. 2 left view.
Fig. 5 is two of a piston structure sectional view.
The specific embodiment
Referring to Fig. 1, this damper comprises a piston cylinder 1, the front end 2 of this piston cylinder is for closed or to be provided with sealing stifled, and on this front end 2, be provided with the connecting hole 13 that connects outside parts, the tail end of piston cylinder 1 is provided with spindle guide to joint ring 3, in piston cylinder 1, be provided with a piston 5 and a axis of the piston 6 that connects firmly with this piston, before piston 5 is divided into the piston cylinder inner chamber, latter two minute chamber 4-1,4-2, the afterbody of described the axis of the piston 6 stretches out outside the piston cylinder to the sealing of joint ring 3 by spindle guide, tail end at the axis of the piston 6 is provided with the connecting hole 12 that connects outside parts, on the circumferential wall of piston 5, have sealing ring mounting groove 5-1, and piston packing 10 is housed in this mounting groove, at described piston cylinder inner chamber 4-1, be filled with damping fluid among the 4-2.Be provided with a bidirectional damper liquid via hole 7 that axially is provided with on described piston 5, this bidirectional damper liquid via hole 7 is a bellmouth, and passes through the precision injection molding of piston 5.Minimum diameter with the precision injection molding micropore is regulated in 0.01mm～0.3mm scope, reaches high-accuracy degree.For the riveted joint pad 11 that makes the axis of the piston does not influence the liquid communication of bidirectional damper liquid via hole 7, be provided with a guiding gutter 14 at the front end face of piston 5, shown in Fig. 2,4.
The operating principle of this hydraulic damper is: during current push piston axle 6, damping fluid flows to piston cylinder branch chamber 4-2 by damping fluid via hole 7 among the piston cylinder branch chamber 4-1, and piston 5 is carried out journey slowly finish it under the damping of this damping fluid via hole before, reaches the effect of damping; Otherwise when post-tensioning the axis of the piston 6, damping fluid flows to piston cylinder branch chamber 4-1 by damping fluid via hole 7 among the piston cylinder branch chamber 4-2, and piston 5 is slowly finished its post-tensioning stroke under the damping of piston cylinder branch chamber 4-2 hydraulic pressure.Because when before pushing away with post-tensioning, damping fluid all flows out by bidirectional damper liquid via hole 7, their discharge value is identical, so two strokes have identical damping and damping speed.
If this hydraulic damper is used for door, window butt, wish that its reciprocating stroke has different damping force values and damping speed, that is to say, at door, when window is opened, need be light and laborsaving, and when door and window is closed, need at a slow speed and big damping, avoid collision to produce noise.In order to realize this function, on described piston 5, can be provided with the unidirectional damping liquid via hole 8 of one or more axial settings, this example is provided with four, shown in Fig. 2,3, the blind end of this unidirectional damping liquid via hole communicates with the mounting groove 5-1 of piston packing, and sealing mounting groove 5-1 and sealing ring 10 are loose fit, make sealing ring 10 play the effect of open and close unidirectional damping liquid via hole 8 along with piston motion forward and backward moving in mounting groove 5-1.
Its operating principle is: referring to Fig. 1, when pushing away before the axis of the piston 6, move (i.e. position in the diagram) behind sealing ring 10 relative its mounting groove 5-1, then the blind end of the sealing of piston 5 front ends and piston barrel and unidirectional damping liquid via hole 8 is opened, damping fluid among the piston cylinder branch chamber 4-1 flows to piston cylinder branch chamber 4-2 by two paths, the one, by bidirectional damper liquid via hole 7, the 2nd, by slit between piston cylinder inwall and the piston and four paths that unidirectional damping liquid via hole 8 forms, therefore, hydraulic pressure reduces fast among the piston cylinder branch chamber 4-1, makes the damping of the preceding implementation of piston journey less, speed is very fast; Otherwise, when the axis of the piston post-tensioning, sealing ring 10 relative its mounting groove 5-1 reaches, then slit and unidirectional damping liquid via hole 8 are sealed between piston cylinder inwall and the piston, the damping fluid of piston cylinder branch chamber 4-2 only flows to piston cylinder branch chamber 4-1 by 7 one passages of bidirectional damper liquid via hole, then piston cylinder divides chamber 4-2 bigger to the pressure of piston 5, and the damping that makes the piston post-tensioning is big, speed is slower.
Referring to Fig. 4, the two-way bidirectional damper liquid via hole 7 in the piston 5 also can adopt stepped hole, and effect is the same with above-mentioned bellmouth.
Claims (4)
1. accurate micropore hydraulic damper, it comprises a piston cylinder (1), the front end of this piston cylinder (2) is for closed or to be provided with sealing stifled, its tail end is provided with spindle guide to joint ring (3), in described piston cylinder (1), be provided with a piston (5) and a axis of the piston that connects firmly with this piston (6), before described piston (5) is divided into the piston cylinder inner chamber, latter two minute chamber (4-1,4-2), the afterbody of described the axis of the piston stretches out outside the piston cylinder to the sealing of joint ring (3) by spindle guide, on the circumferential wall of piston (5), have sealing ring mounting groove (5-1), and piston packing (10) is housed in sealing circle mounting groove, in described piston cylinder inner chamber, be filled with damping fluid, on described piston (5), be provided with a bidirectional damper liquid via hole (7) that axially is provided with at least, it is characterized in that: this bidirectional damper liquid via hole (7) is bellmouth or stepped hole, and the moulding by the precise injection molding of piston (5).
2. accurate micropore hydraulic damper according to claim 1, it is characterized in that: on described piston (5), be provided with a unidirectional damping liquid via hole (8) that axially is provided with at least, the blind end of this unidirectional damping liquid via hole communicates with the mounting groove (5-1) of piston packing, and described sealing mounting groove (5-1) is loose fit with sealing ring (10).
3. accurate micropore hydraulic damper according to claim 1 and 2 is characterized in that: the minimum diameter of described bidirectional damper liquid via hole (7) is in 0.01mm～0.3mm scope.
4. the close hydraulic damper in precise and tiny hole according to claim 1 and 2 is characterized in that: be provided with a guiding gutter (14) on the contact surface of described piston (5) and the axis of the piston riveted joint pad (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200345232U CN201666069U (en) | 2009-09-15 | 2009-09-15 | Precise micropore hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200345232U CN201666069U (en) | 2009-09-15 | 2009-09-15 | Precise micropore hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666069U true CN201666069U (en) | 2010-12-08 |
Family
ID=43267028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200345232U Expired - Fee Related CN201666069U (en) | 2009-09-15 | 2009-09-15 | Precise micropore hydraulic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666069U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468496A (en) * | 2015-08-14 | 2017-03-01 | 杨庭卫 | A kind of certainly closing buffers Silent refrigerator door hinge |
| CN108087480A (en) * | 2018-01-29 | 2018-05-29 | 佛山市南海区然铭力佳利五金制品有限公司 | Minitype damper and its piston |
-
2009
- 2009-09-15 CN CN2009200345232U patent/CN201666069U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468496A (en) * | 2015-08-14 | 2017-03-01 | 杨庭卫 | A kind of certainly closing buffers Silent refrigerator door hinge |
| CN108087480A (en) * | 2018-01-29 | 2018-05-29 | 佛山市南海区然铭力佳利五金制品有限公司 | Minitype damper and its piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20160915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |