CN102840264B - Rotary damper - Google Patents
Rotary damper Download PDFInfo
- Publication number
- CN102840264B CN102840264B CN201210214453.5A CN201210214453A CN102840264B CN 102840264 B CN102840264 B CN 102840264B CN 201210214453 A CN201210214453 A CN 201210214453A CN 102840264 B CN102840264 B CN 102840264B
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- Prior art keywords
- mentioned
- liquid chamber
- rotor
- recess
- damper
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Abstract
The invention provides a rotary damper capable of changing the rotation damping force in correspondence to the rotation speed of a rotor along arbitrary rotation directions. The rotary damper (1) comprises: a damper shell (2) with a liquid chamber (10) filled with viscous fluid; and the rotor (3), wherein one end of the rotor is rotationally accommodated in the liquid chamber, and the other end protrudes from the damper shell. The rotary damper is characterized in that: a concave portion (16) communicated with the liquid chamber is formed on an inner peripheral surface (15) for dividing a lateral peripheral wall (6) of the damper shell of the liquid chamber, and a movable plate (21) is arranged on the concave portion and used for dividing the liquid chamber and the concave portion, moreover the pressure of the liquid chamber correspondingly displaces towards the inner part of the concave portion.
Description
Technical field
The present invention relates to following rotation damper, that is, and rotatably mounted rotor in the shell of enclosing toughness fluid, and the flow resistance to the turning effort viscous fluid of rotor.
Background technique
Be known to following rotation damper, it has the shell cylindraceous of the liquid chamber of enclosing toughness fluid and the rotor that is rotatably supported in shell, and utilizes the decay rotation of rotor of the resistance of viscous fluid.Rotor possesses: rotor shaft, and its one end is contained in liquid chamber, and the other end is outstanding to the outside of shell; And blade (rotor blade), it is outstanding to radial outside from being positioned at the outer circumferential face of part of liquid chamber of rotor shaft.The other end of rotor shaft (outer end) links with the rotary component (gear etc.) of the rotation that should decay.When rotor, viscous fluid is by being formed at the passage between blade and outer casing inner wall, and the flow resistance of viscous fluid now acts on rotor as rotational resistance.In such rotation damper, be provided with the running channel and the baffle plate (blade) of adjusting the aperture of passage in liquid chamber with passage, when rotor rotates to a sense of rotation, flowing of viscous fluid by the rotation along with rotor makes baffle plate become the first aperture, when rotor is during to the sense of rotation rotation of other contrary with sense of rotation, the flowing and make baffle plate become the second aperture round about of the viscous fluid by the rotation along with rotor, thereby make the rotational resistance of rotor change (for example, patent documentation 1).
Patent documentation 1: Japanese kokai publication hei 7-127681 communique
Above rotation damper can make with the sense of rotation of rotor the rotational resistance of rotor change accordingly, but has the problem of the rotational resistance variation of the identical sense of rotation that cannot make rotor.In addition, due to running channel and baffle plate being set in liquid chamber, so there is the problem due to the angle of rotation of the restrict rotor such as running channel.
Summary of the invention
The present invention produces in view of above problem, and its problem is to provide the rotation damper (speed responsive type rotation damper) that all can make accordingly with the rotational speed of rotor rotational resistance change in sense of rotation arbitrarily.
In order to solve above-mentioned problem, rotation damper 1 of the present invention possesses: damper shell 2, and this damper shell 2 has the liquid chamber 10 of enclosing toughness fluid; And rotor 3, one end of this rotor 3 is rotatably contained in aforesaid liquid chamber, the other end is outstanding from above-mentioned damper shell, this rotation damper is characterised in that, the inwall 6 dividing the above-mentioned damper shell of aforesaid liquid chamber, is formed with the recess 16,41 being communicated with aforesaid liquid chamber, at above-mentioned recess, zoning parts (21,42) are set, this zoning parts are divided aforesaid liquid chamber and above-mentioned recess, and, with the pressure of aforesaid liquid chamber accordingly to above-mentioned recess intrinsic displacement.
According to this, form, in the situation that rotor and pressure rise in liquid chamber, zoning parts are to recess intrinsic displacement, thereby the gap between rotor and zoning parts becomes greatly.Thus, viscous fluid easily flows by the gap between rotor and zoning parts, thereby the rotational resistance that rotor is subject to reduces.Because the rotational speed of rotor is faster, the pressure in liquid chamber is higher, so the rotational speed of rotor is faster, the resistance that rotation damper produces (damping force) is less.In addition, because recess and zoning parts do not hinder the rotation of rotor, so rotor can be to positive and negative direction rotation arbitrarily.
Other aspects of the present invention are characterised in that, above-mentioned recess is arranged with respect to the axial rotary radial outside of above-mentioned rotor, and above-mentioned zoning parts can be along the radial displacement of the running shaft of above-mentioned rotor.
According to this, form, the part of the pressure rise causing due to the rotation easily producing by rotor arranges recess and zoning parts, thereby zoning parts easily and the rotation displacement accordingly of rotor.
Other aspects of the present invention are characterised in that, above-mentioned zoning parts have the plate member 21 be located at slidably in above-mentioned recess and the afterburning parts 26 to the reinforcing of above-mentioned liquid chamber side to above-mentioned plate member.
According to this, form, can utilize simple formation, gap between rotor and plate member and the pressure in liquid chamber are changed accordingly.
Other aspects of the present invention are characterised in that, above-mentioned zoning parts are to seal the flexible part 47 that the mode of above-mentioned recess is combined with above-mentioned inwall.
According to this, form, can utilize simple formation, gap between rotor and plate member and the pressure in liquid chamber are changed accordingly.
Other aspects of the present invention are characterised in that, the spacing wall of zoning liquid chamber is set at the inwall of above-mentioned damper shell.
According to this, form, because spacing wall hinders flowing of viscous fluid, so when rotor, the pressure in liquid chamber easily rises, and the easy displacement of zoning parts.
According to above formation, in rotation damper, in sense of rotation arbitrarily, all can make the rotational resistance of rotor change.
Accompanying drawing explanation
Fig. 1 is the stereogram of the rotation damper of the first mode of execution.
Fig. 2 is the exploded perspective view of the rotation damper of the first mode of execution.
Fig. 3 is the III-III sectional view of Fig. 1.
Fig. 4 is the IV-IV sectional view of Fig. 3.
The sectional view of the state of rotation damper when Fig. 5 means rotor.
Fig. 6 is the sectional view of the rotation damper of the second mode of execution.
Fig. 7 is the sectional view of the rotation damper of the second mode of execution.
Fig. 8 is the sectional view of the rotation damper of distortion mode of execution.
Symbol description
1,100-rotation damper, 2-shell, 3-rotor, 10-liquid chamber, 15-inner peripheral surface, 16-recess, 21-movable platen (zoning parts), 34-blade, 35-O type circle, 41-recess, 47-barrier film (zoning parts), 51-spacing wall, A-axis.
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are elaborated.
As shown in Fig. 1 and 2, the shell 2 that the rotation damper 1 of the first mode of execution has drum is contained in the rotor 3 in shell 2 with a part.It is coaxial upper that the axis of shell 2 and rotor 3 is disposed at respectively, and consistent with the axis A of running shaft that becomes rotation damper 1.Below, the direction along axis A is called to axial direction.
As shown in Figure 2, shell 2 includes the enclosure base 8 of round-ended cylinder shape and discoideus shell cap 9, one end of the axial direction of the side perisporium 6 cylindraceous of enclosure base 8 is sealed and the other end opening by base plate 7, the opening end of shell cap 9 closure base portions 8.Enclosure base 8 and shell cap 9 are formed by resin.Opening end at the side perisporium 6 of enclosure base 8, spreads all over complete cycle and extends along the outstanding fitting projection 12 of axial direction, the periphery of outer housing cover portion 9 circular be concaved with can be chimeric with fitting projection 12 telescoping groove 13(with reference to Fig. 4).Enclosure base 8 and shell cap 9 are embedded in fitting projection 12 under the state of telescoping groove 13 and are bonded with each other by Vibration Welding.Thus, the internal separation at shell 2 goes out liquid chamber 10.Enclosure base 8 is not limited to Vibration Welding with the combination of shell cap 9, also can replace by known methods such as tackiness agents.In addition, enclosure base 8 is carried out after rotor 3 described later being contained in to the viscous fluids such as inside filling silicon oil with being bonded on of shell cap 9.
At the outer surface of the base plate 7 of enclosure base 8 and extend diametrically along the outstanding key 14 of axial direction.Mode and enclosure base 8 combinations of key 14 rotating around axis A with respect to the devices such as door of assembling rotation damper 1.In addition, also can replace key 14, and give prominence at the periphery of base plate 7 flange that is provided for bolton.
On the inner peripheral surface 15 of side perisporium 6, be formed with two recesses 16 that are radially arranged with to mutually opposite direction along.Recess 16 extends to opening end from the continuous part of side perisporium 6 and base plate 7.Recess 16 has: form circumferential surface and as the diapire 17 of the bottom of recess 16; And two sidewalls 18, they from the circumferential both sides of diapire 17, start with a radial parallel extend, and extend to inner peripheral surface 15 sides of side perisporium 6.Respectively the inward flange of each sidewall 18, with the boundary part of the inner peripheral surface 15 of side perisporium 6, be formed with along circumferentially and towards the outstanding jaw portion 19 of direction close to each other.In addition, each jaw portion 19 is along the inward flange of each sidewall 18 and extend on axial direction.
Each recess 16 is accommodated movable platen 21.Movable platen 21 bends to arc, so that be concave surface towards the internal surface 22 of the central side of enclosure base 8, and is convex surface towards the outer surface 23 of diapire 17 sides of recess 16.The width of the sidewall 18 of the Thickness Ratio recess 16 of movable platen 21 is little, and movable platen 21 can be in the interior radial displacement along axis A of recess 16.Dual-side portion at the internal surface 22 of movable platen 21, is formed with the otch 24 chimeric with jaw portion 19.By making jaw portion 19 and otch 24 chimeric, limit movable platen 21 and come off from recess 16.In addition, as shown in Figure 3, by making jaw portion 19 and otch 24 chimeric, make the internal surface 22 of movable platen 21 and the inner peripheral surface 15 of side perisporium 6 form continuous curved surface.
Between the outer surface 23 of movable platen 21 and the diapire 17 of recess 16, clamp the leaf spring 26 as afterburning parts.As shown in Figure 3, utilize 26 pairs of movable platens 21 of leaf spring to apply the power towards axis A side, thereby conventionally time, otch 24 is the state coordinating with jaw portion 19.
At the central part of the base plate 7 of enclosure base 8, be formed with section rounded have bottom outlet that is a bearing hole 27.Central part in outer housing cover portion 9, is formed with the rounded through hole of section that is bearing hole 28.The interior distolateral of bearing hole 28 carried out hole enlargement and form O type circle accommodation section 29.
Rotor 3 has rotor shaft, and this rotor shaft forms as axis coaxle continuous columned rotor shaft outer end 31, rotor shaft central part 32 and rotor shaft inner end 33 by take axis A.The external diameter of rotor shaft outer end 31 and rotor shaft inner end 33 is less than the external diameter of rotor shaft central part 32.Rotor shaft inner end 33 is rotatably supported in the bearing hole 27 of base plate 7.Give prominence to the outside to shell 2 by the bearing hole 28 of shell cap 9 rotor shaft outer end 31, and be rotatably supported in bearing hole 28.Thus, rotor 3 is being supported on shell 2 to the mode that just and in the other direction both direction rotates around axis A.
Outer circumferential face at the base end part of rotor shaft outer end 31, is embedded with O type circle 35.O type circle 35 is being flush-mounted under the state of rotor shaft outer end 31, is disposed in the O type circle accommodation section 29 of shell cap 9, and to the sealing gap between rotor shaft outer end 31 and O type circle accommodation section 29.Thus, can prevent that the viscous fluid that is filled in liquid chamber 10 from spilling to outside by bearing hole 28.The front end of rotor shaft outer end 31 is cut contrary sidepiece and is formed flat pattern.Form the rotor shaft outer end 31 of flat pattern as input shaft performance function, and the links such as gear with the rotating force of should decaying in the mode that cannot rotate.
At the outer circumferential face of rotor shaft central part 32, around axis A, with the compartment of terrain of 180 °, give prominence to and be provided with two blades 34.Blade 34 forms roughly cuboid, and extends along axis A.The outstanding length radially of each blade 34 is preferably set to, and the gap diametrically and between the inner peripheral surface 15 of enclosure base 8 is little.In addition, the length of the axial direction of each blade 34 is preferably set to, and the gap on axial direction and between the internal surface of the base plate 7 of enclosure base 8 is little.
For rotation damper 1 as constructed as above, when rotor 3 rotation, mobile viscous fluid in the small passage being formed between blade 34 and the inner peripheral surface 15 of shell 2 and between blade 34 and the internal surface 22 of movable platen 21.The flow resistance of utilizing viscous fluid now, applies rotational resistance to rotor 3.That is, rotation damper 1 produces resistance (damping force) with respect to the rotation of rotor 3.Now, the rotational speed of rotor 3 is faster, and the pressure of the viscous fluid in liquid chamber 10 is higher, as shown in Figure 5, according to the pressure in liquid chamber 10, movable platen 21 overcome leaf spring 26 active force and to radial outside, be the inner side displacement of recess 16.Thus, when blade 34 is diametrically when with movable platen 21 opposed position, it is large that the passage between blade 34 and movable platen 21 becomes, and viscous fluid easily flows between blade 34 and movable platen 21, thus the rotational resistance that rotor 3 is applied reduction.In other words, in the situation that the rotational speed of rotor 3 pressure fast, liquid chamber 10 is high, movable platen 21 is to recess 16 intrinsic displacements, and the split channel that formation is produced by recess 16, viscous fluid is by split channel, thus the rotational resistance that rotor 3 is applied reduces.
On the other hand, in the situation that the rotational speed of rotor 3 pressure slow, liquid chamber 10 is low, utilize the active force of leaf spring 26 to stop movable platen 21 to the displacement in recess 16, thereby the passage between blade 34 and movable platen 21 is maintained less degree, thereby the flow resistance of the viscous fluid that rotor 3 is applied increases.
Rotation damper 1 is arranged with recess 16 at inner peripheral surface 15, and at the interior configuration movable platen 21 of recess 16, so movable platen 21 can not contact with rotor 3, thereby rotor 3 can be to the positive and negative rotation of sense of rotation arbitrarily.In addition, at rotor 3 to the rotation of sense of rotation arbitrarily in the situation that, the pressure displacement accordingly of movable platen 21 and liquid chamber 10, thus can change accordingly the rotational resistance that rotor 3 is applied with the speed of rotor 3.
Compare with the rotation damper 1 of the first mode of execution, the rotation damper 100 of the second mode of execution be formed at enclosure base 8 inner peripheral surface 15 recess 41 shape, divide in the formation of recess 41 and the zoning parts of liquid chamber 10 different.
As shown in FIG. 6 and 7, the inner peripheral surface 15 in enclosure base 8 is formed with two recesses 41 that are radially arranged with to mutually opposite direction along.Recess 41 configures from a predetermined distance at axial direction upside perisporium 6 and base plate 7 continuous part and opening end.That is, recess 41 is to radially inner side opening, and has: form circumferential surface and become the diapire 42 of the bottom of recess 41; And from circumferential two edges, top edge and the lower limb of diapire 42 start with a radial parallel two sidewalls 43, upper wall 44 and the lower wall 45 that extend and extend to inner peripheral surface 15 sides of side perisporium 6.At surrounding's formation of recess 41 groove 46 of having chance with, this edge groove 46 in the mode of surrounding recess 41 from inner peripheral surface 15 to radial outside and the width of recess 41 be arranged with widely.
By tackiness agent, the periphery of barrier film 47 of sealing recess 41 is bonded in to edge groove 46, recess 41 by barrier film 47 liquid-tight seal.Barrier film 47 is to have flexible film-like members, can be rubber membrane.In recess 41, enclose and have the air as compressible fluid.Barrier film 47 due to 46 combinations of edge groove, so can be outstanding to the radially inner side of inner peripheral surface 15, thereby avoid and the contacting of blade 34.
For rotation damper 100 as constructed as above, utilize the pressure of the liquid chamber 10 corresponding with the rotational speed of rotor 3, make barrier film 47 to recess 41 intrinsic displacements (dotted line in Fig. 6 and Fig. 7), change the size that is formed at the passage between blade 34 and barrier film 47.That is, identical with rotation damper 1, rotation damper 100 can make with the rotational speed of rotor 3 resistance (damping force) producing change accordingly.
Above, finish the explanation of concrete mode of execution, but the present invention is not limited to above-mentioned mode of execution, and can implements widely distortion.In above-mentioned mode of execution, on side perisporium 6, be provided with recess 16,41, but also can be arranged at base plate 7 in other mode of execution.In rotation damper 1, also can replace leaf spring 26, use the elastic members such as helical spring, rubber.
In addition, as shown in Figure 8, also can be in the rotation damper 1 of the first mode of execution, on the inner peripheral surface 15 of the side perisporium 6 of enclosure base 8, arrange and extend outstanding spacing wall 51 towards rotor shaft central part 32 sides (axis A side).Spacing wall 51 also can be continuous with base plate 7.By spacing wall 51 is set, the flowing of the viscous fluid while hindering rotor 3 rotation.Therefore, when rotor 3 rotation, the pressure in liquid chamber 10 easily rises, and movable platen 21 is more prone to displacement.Thus, can make the variation of the rotational resistance that caused by the displacement of movable platen 21 larger.In addition, same, also can in the rotation damper 100 of the second mode of execution, spacing wall 51 be set.
Claims (6)
1. a rotation damper,
Possess: damper shell, this damper shell has the liquid chamber of enclosing toughness fluid; And rotor, one end of this rotor is rotatably contained in aforesaid liquid chamber, and the other end is outstanding from above-mentioned damper shell,
Above-mentioned rotation damper is characterised in that,
Inwall dividing the above-mentioned damper shell of aforesaid liquid chamber, is formed with the recess being communicated with aforesaid liquid chamber,
At above-mentioned recess, zoning parts are set, this zoning parts are divided aforesaid liquid chamber and above-mentioned recess, and, with the pressure of aforesaid liquid chamber accordingly to above-mentioned recess intrinsic displacement,
Above-mentioned recess is arranged with respect to the axial rotary radial outside of above-mentioned rotor, and above-mentioned zoning parts can be along the radial displacement of the running shaft of above-mentioned rotor.
2. rotation damper according to claim 1, is characterized in that,
Above-mentioned zoning parts have the plate member be located at slidably in above-mentioned recess and the afterburning parts to the reinforcing of above-mentioned liquid chamber side to above-mentioned plate member.
3. rotation damper according to claim 1, is characterized in that,
Above-mentioned zoning parts are to seal the flexible part that the mode of above-mentioned recess is combined with above-mentioned inwall.
4. rotation damper according to claim 1, is characterized in that,
At the inwall of above-mentioned damper shell, the spacing wall of zoning liquid chamber is set.
5. rotation damper according to claim 2, is characterized in that,
At the inwall of above-mentioned damper shell, the spacing wall of zoning liquid chamber is set.
6. rotation damper according to claim 3, is characterized in that,
At the inwall of above-mentioned damper shell, the spacing wall of zoning liquid chamber is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011139396A JP5762170B2 (en) | 2011-06-23 | 2011-06-23 | Rotating damper |
| JP2011-139396 | 2011-06-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102840264A CN102840264A (en) | 2012-12-26 |
| CN102840264B true CN102840264B (en) | 2014-11-05 |
Family
ID=47367911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210214453.5A Expired - Fee Related CN102840264B (en) | 2011-06-23 | 2012-06-25 | Rotary damper |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5762170B2 (en) |
| CN (1) | CN102840264B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015110457A (en) * | 2013-12-06 | 2015-06-18 | 三菱電機株式会社 | Tension pulley device of elevator |
| US10253556B2 (en) | 2016-06-29 | 2019-04-09 | Hunter Douglas Inc. | Damper for a covering for an architectural opening |
| CN106438815B (en) * | 2016-11-07 | 2018-05-11 | 湖北汽车工业学院 | A kind of automatically controlled adaptive damping rotating hydraulic damper |
| JP6817118B2 (en) | 2017-03-15 | 2021-01-20 | オイレス工業株式会社 | Rotary damper |
| JP6920728B2 (en) * | 2017-09-14 | 2021-08-18 | 下西技研工業株式会社 | Rotating damper device with one-way clutch and one-way clutch |
| CN113357305B (en) * | 2021-05-31 | 2022-09-23 | 启东捌友精密汽车部件有限公司 | Vacuum die-casting machine is with buffering base |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003130112A (en) * | 2001-10-24 | 2003-05-08 | Nifco Inc | Rotation damper |
| CN1592822A (en) * | 2001-11-27 | 2005-03-09 | 株式会社索密克石川 | Rotary damper and automobile part comprising it and auxiliary mechanism of rotary operation |
| CN101067430A (en) * | 2001-11-27 | 2007-11-07 | 株式会社索密克石川 | Rotary damper, auto part having rotary damper and rotational motion assistant mechanism |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB103986A (en) * | 1916-02-04 | 1917-04-19 | Russell Steenback Carter | Improvements in Shock Absorbers. |
| GB1047224A (en) * | 1962-10-05 | 1966-11-02 | Improvements in or relating to Continuous rotary dampers | |
| JPS58189843U (en) * | 1982-06-12 | 1983-12-16 | 株式会社ニフコ | oil damper |
| US4576252A (en) * | 1983-04-15 | 1986-03-18 | Nifco Inc. | Rotation damper |
| US4618039A (en) * | 1984-04-19 | 1986-10-21 | Nifco Inc. | One-way clutch |
| US4527675A (en) * | 1984-04-19 | 1985-07-09 | Nifco Inc. | Oil type damper |
| US4565266A (en) * | 1984-04-30 | 1986-01-21 | Nifco Inc. | Oil type damper |
| JPH01182643A (en) * | 1988-01-12 | 1989-07-20 | Nifco Inc | Rotary damper |
| JPH07127681A (en) * | 1993-10-28 | 1995-05-16 | Nifco Inc | One-way rotary damper |
| GB2316994B (en) * | 1996-09-04 | 2000-08-30 | Kinetrol Ltd | Rotary dampers |
-
2011
- 2011-06-23 JP JP2011139396A patent/JP5762170B2/en not_active Expired - Fee Related
-
2012
- 2012-06-25 CN CN201210214453.5A patent/CN102840264B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003130112A (en) * | 2001-10-24 | 2003-05-08 | Nifco Inc | Rotation damper |
| CN1592822A (en) * | 2001-11-27 | 2005-03-09 | 株式会社索密克石川 | Rotary damper and automobile part comprising it and auxiliary mechanism of rotary operation |
| CN101067430A (en) * | 2001-11-27 | 2007-11-07 | 株式会社索密克石川 | Rotary damper, auto part having rotary damper and rotational motion assistant mechanism |
Non-Patent Citations (3)
| Title |
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| JP平1-182643A 1989.07.20 * |
| JP特开2003130112A 2003.05.08 * |
| JP特开平7-127681A 1995.05.16 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102840264A (en) | 2012-12-26 |
| JP2013007414A (en) | 2013-01-10 |
| JP5762170B2 (en) | 2015-08-12 |
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