CN206921450U - A kind of piano lifesaving hydraulic descent control device - Google Patents
A kind of piano lifesaving hydraulic descent control device Download PDFInfo
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- CN206921450U CN206921450U CN201720579537.7U CN201720579537U CN206921450U CN 206921450 U CN206921450 U CN 206921450U CN 201720579537 U CN201720579537 U CN 201720579537U CN 206921450 U CN206921450 U CN 206921450U
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- closed cavity
- rotating shaft
- piano
- control device
- way valve
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Abstract
The utility model discloses a kind of piano lifesaving hydraulic descent control device, including housing, closed cavity is provided with housing, damping oil is filled with closed cavity, rotating shaft is connected with closed cavity, the rear end of rotating shaft stretches out closed cavity, catch is convexly equipped with the periphery of rotating shaft front end, one-way valve block is connected with closed cavity wall, the first limiting plate is provided with closed cavity wall；Lubricating pad piece and sealing cushion were disposed with closed cavity on rear side of catch, cross lubricating pad piece and sealing cushion is engaged with closed cavity wall and rotating shaft, cross on lubricating pad piece and offer the oil groove excessively of front and rear insertion, the head end of oil groove is crossed close to catch, the end of oil groove is crossed close to one-way valve block, seals the oil-recovery tank that is provided with and mistake oil groove head and end can be conducted on cushion.Simple in construction, gap automatically adjusts, and speed is bigger, and pressure is bigger, and sealing is better, simpler more effective than conventional structure.
Description
Technical field
Descending lifeline technical field is the utility model is related to, it particularly relates to a kind of piano lifesaving hydraulic descent control device.
Background technology
Sustained piano closer is a metal connecting piece for connecting piano lid and side door plate, using hydraulic principle, makes steel
Qin covers slowly to fall when falling, and main purpose is to prevent from injuring by a crashing object the finger of piano children.Sustained piano closer only exists
Used in upright piano, device of its outward appearance similar to closing of bus door.
Traditional Sustained piano closer is complicated, and when decrease speed is larger, it is bad to delay drop effect.
The problem of in correlation technique, effective solution is not yet proposed at present.
Utility model content
For the above-mentioned technical problem in correlation technique, the utility model proposes a kind of piano lifesaving hydraulic descent control device, simply have
Effect.
To realize above-mentioned technical purpose, what the technical solution of the utility model was realized in：
A kind of piano lifesaving hydraulic descent control device, including housing, closed cavity is provided with the housing, is filled out in the closed cavity
Filled with damping oil, rotating shaft is connected with the closed cavity, the closed cavity is stretched out in the rear end of the rotating shaft, described turn
It is convexly equipped with the catch being engaged with the closed cavity wall on the periphery of axle front end, activity is even on the closed cavity wall
The one-way valve block corresponding with the catch is connected to, is set on the closed cavity wall along the side in the rotating shaft circumferential direction
The one-way valve block can be limited by, which being equipped with, rotates so that its first limiting plate for being bonded with rotating shaft front end periphery；It is described closed
Was disposed with lubricating pad piece and sealing cushion in cavity on rear side of the catch, it is described cross lubricating pad piece and seal cushion with
The closed cavity wall and the rotating shaft are engaged, the oil groove excessively for offering front and rear insertion on lubricating pad piece excessively, the mistake
The head end of oil groove is provided with close to the catch, the end for crossing oil groove on the one-way valve block, the sealing cushion
Can be by the oil-recovery tank crossed oil groove head and end and be conducted.
Further, the closed cavity is cylinder, and it is coaxially disposed with the rotating shaft.
Further, the front end closure of the closed cavity, the rear end of the closed cavity is fixed by screw thread and nut
Connection, rotating shaft set is provided between the nut and the rotating shaft.
Further, first boss is provided with the front end face center of the closed cavity, the first boss is cylinder
Shape, the blind hole being engaged with the first boss, the blind hole and the first boss are provided with the front end face of the rotating shaft
Between be provided with rotating shaft bottom set.
Further, rotating shaft wing is installed with the catch.
Further, one end of the one-way valve block is provided with the arc being flexibly connected with the closed cavity periphery
Portion, the other end of the one-way valve block are provided with smooth surface, the one-way valve block in the side close to first limiting plate
The other end side of first limiting plate is being provided with plane.
Further, second boss, the second boss and the curved portions are provided with the closed cavity periphery
It is engaged, the second boss is setting first limiting plate close to the side of the smooth surface, and the second boss exists
The side of the plane is provided with the second limiting plate, the second limiting plate bottom is inclined along the direction away from the plane
Tiltedly.
Further, limited post is provided with the second boss, described cross on lubricating pad piece is provided with and the limited post
The limited impression being engaged.
Further, the oil groove of crossing extends along the rotating shaft circumferential direction, and the end for crossing oil groove is connected with transition
Groove, the depth of the transition groove gradually become shallower as along the direction close to the one-way valve block.
Further, the sealing cushion is tightly connected by the periphery of the first O-ring and the closed cavity, described
Cushion is sealed to be tightly connected by the second O-ring and the periphery of the rotating shaft.
The beneficial effects of the utility model：Simple in construction, the gap between one-way valve block and rotating shaft can be according under piano lid
Terminal-velocity degree automatically adjusts, and piano lid falling speed is bigger, and the pressure of damping oil is bigger, the sealing between one-way valve block and rotating shaft
It is better, it is simpler more effective than conventional structure.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is the decomposition texture schematic diagram of the piano lifesaving hydraulic descent control device according to the utility model embodiment；
Fig. 2 is the longitudinal sectional view of the piano lifesaving hydraulic descent control device according to the utility model embodiment；
Fig. 3 is the transverse sectional view of the piano lifesaving hydraulic descent control device according to the utility model embodiment；
Fig. 4 is the structural representation of the housing according to the utility model embodiment；
Fig. 5 is the structural representation of the one-way valve block according to the utility model embodiment；
Fig. 6 is the structural representation of the rotating shaft wing according to the utility model embodiment；
Fig. 7 is the structural representation of the rotating shaft according to the utility model embodiment；
Fig. 8 is the structural representation for crossing lubricating pad piece according to the utility model embodiment；
Fig. 9 is the structural representation of the sealing seat cushion according to the utility model embodiment.
In figure：
1st, housing；2nd, one-way valve block；3rd, damping oil；4th, rotating shaft bottom set；5th, rotating shaft wing；6th, rotating shaft；7th, lubricating pad piece is crossed；8、
Seal cushion；9th, the first O-ring；10th, the second O-ring；11st, rotating shaft set；12nd, nut；13rd, first boss；14th, first is spacing
Plate；15th, the second limiting plate；16th, limited post；17th, oil groove is crossed；18th, oil-recovery tank；19th, limited impression.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the scope of the utility model protection.
As shown in figs 1-9, a kind of piano lifesaving hydraulic descent control device according to the utility model embodiment, including housing 1, institute
State and closed cavity is provided with housing 1, be filled with damping oil 3 in the closed cavity, be connected with the closed cavity
The closed cavity is stretched out in rotating shaft 6, the rear end of the rotating shaft 6, be convexly equipped with the periphery of the front end of rotating shaft 6 with it is described closed
The catch that cavity wall is engaged, the one-way valve block 2 corresponding with the catch is connected with the closed cavity wall,
Be provided with the closed cavity wall along the side in the circumferential direction of rotating shaft 6 can limit the one-way valve block 2 rotate with
The first limiting plate 14 for making it be bonded with the front end periphery of rotating shaft 6；In the closed cavity the catch rear side according to
It is secondary to be provided with lubricating pad piece 7 and sealing cushion 8, it is described cross lubricating pad piece 7 and seal cushion 8 with the closed cavity wall and institute
Rotating shaft 6 is stated to be engaged, it is described cross on lubricating pad piece 7 offer front and rear insertion cross oil groove 17, it is described cross oil groove 17 head end it is close
The catch, the end for crossing oil groove 17 is provided with the one-way valve block 2, the sealing cushion 8 can be by the mistake
The oil-recovery tank 18 that the head and end of oil groove 17 is conducted.
In a specific embodiment of the present utility model, the closed cavity is cylinder, and it is coaxial with the rotating shaft 6
Set.
In a specific embodiment of the present utility model, the front end closure of the closed cavity, the closed cavity
Rear end is fixedly connected by screw thread with nut 12, and rotating shaft set 11 is provided between the nut 12 and the rotating shaft 6.
It is convex that first is provided with a specific embodiment of the present utility model, at the front end face center of the closed cavity
Platform 13, the first boss 13 are cylinder, are provided with what is be engaged with the first boss 13 on the front end face of the rotating shaft 6
Blind hole, rotating shaft bottom set 4 is provided between the blind hole and the first boss 13.
In a specific embodiment of the present utility model, rotating shaft wing 5 is installed with the catch.
In a specific embodiment of the present utility model, one end of the one-way valve block 2 is provided with and the confined air
The curved portions that chamber periphery is flexibly connected, the other end of the one-way valve block 2 are set in the side close to first limiting plate 14
Smooth surface is equipped with, the other end of the one-way valve block 2 is provided with plane in the side away from first limiting plate 14.
In a specific embodiment of the present utility model, second boss is provided with the closed cavity periphery, institute
State second boss to be engaged with the curved portions, the second boss is setting described first close to the side of the smooth surface
Limiting plate 14, the second boss are provided with the second limiting plate 15, second limiting plate 15 in the side close to the plane
Bottom tilts along the direction away from the plane.
In a specific embodiment of the present utility model, limited post 16 is provided with the second boss, it is described excessively oily
The limited impression 19 being engaged with the limited post 16 is provided with pad 7.
In a specific embodiment of the present utility model, the oil groove 17 of crossing extends along the circumferential direction of rotating shaft 6, institute
The end for stating oil groove 17 is connected with transition groove, the depth of the transition groove along close to the direction of the one-way valve block 2 by
Gradual change is shallow.
In a specific embodiment of the present utility model, it is described sealing cushion 8 by the first O-ring 9 with it is described closed
The periphery of cavity is tightly connected, and the sealing cushion 8 is tightly connected by the second O-ring 10 and the periphery of the rotating shaft 6.
In order to facilitate above-mentioned technical proposal of the present utility model is understood, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
The mode described in the utility model that is fixedly connected can use the conventional technical means such as bolt, bonding to replace, and be flexibly connected
Mode can use the conventional technical means such as be hinged to replace.
There are first boss 13, second boss and limited post 16 in housing 1.Have in second boss for installing one-way valve block 2
Semicircle orifice.First boss 13 is used to install rotating shaft 6, and rotating shaft 6 and shell are realized by first boss 13, rotating shaft bottom set 4 and blind hole
The flexible connection of body 1, two catch are provided with rotating shaft 6, two catch are located on same sagittal plane, are provided with and turn on catch
Axle wing 5, rotating shaft 6 are installed in the first boss 13 of housing 1 again after installing rotating shaft wing 5, and one-way valve block 2 has two, each peace
In the semicircle orifice of a second boss, lubricating pad piece 7 is crossed by limited impression 19 and limited post 16 after housing 1 is interior,
Sealing seat cushion 8 is installed again.
The curved portions of the one end of one-way valve block 2 are semicircle, corresponding with the semicircle orifice of second boss, for convex installed in second
It can be rotated after on platform.The side of the other end of one-way valve block 2 is smooth surface, and the opposite side of the other end is plane.
The quantity for crossing oil groove 17 is two, and oil-recovery tank 18 is annular groove.
Rotating shaft wing 5 is used to improve the sealing effectiveness between catch and housing 1.
When specifically used, when rotating shaft 6 reversely rotates, catch promotes damping oil 3 to move, if rotating shaft 6 reversely rotates speed
Larger, the pressure of damping oil 3 is also larger, and the active force of damping oil 3 will promote one-way valve block 2 to rotate, spacing until propping up first
Plate 14, for one-way valve block 2 under the restriction effect of the first limiting plate 14, the end of one-way valve block 2 is brought into close contact the circumference of rotating shaft 6
Face, the damping oil 3 between one-way valve block 2 and catch are stopped that damping oil 3 can only be from mistake by the plane on one-way valve block 2
The head end that the end of oil groove 17 entered oil groove 17 by oil-recovery tank 18 realizes oil return, and then realizes the effect of damping；If rotating shaft 6
Reverse rotation speed is smaller, and the pressure of damping oil 3 is smaller, and the rotational angle of one-way valve block 2 is smaller, and the end of one-way valve block 2 will
Certain gap between the periphery of rotating shaft 6 be present, damping action now is also smaller.When rotating shaft 6 rotates forward, gear
Piece promotes damping oil 3 to move, and the active force of damping oil 3 pushes one-way valve block 2 open, and making the plane of one-way valve block 2, to be against second spacing
On plate 15, because the second limiting plate 15 tilts, there will be gap between one-way valve block 2 and rotating shaft 6, the effect of draining is can reach,
Enter without producing damping.
To sum up, it is simple in construction by means of above-mentioned technical proposal of the present utility model, the gap between one-way valve block and rotating shaft
It can be automatically adjusted according to piano lid falling speed, piano lid falling speed is bigger, and the pressure of damping oil is bigger, and one-way valve block is with turning
Sealing between axle is better, simpler more effective than conventional structure.
Preferred embodiment of the present utility model is these are only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (10)
1. a kind of piano lifesaving hydraulic descent control device, including housing（1）, it is characterised in that the housing（1）Closed cavity is inside provided with,
Damping oil is filled with the closed cavity（3）, rotating shaft is connected with the closed cavity（6）, the rotating shaft（6）After
The closed cavity, the rotating shaft are stretched out in end（6）It is convexly equipped with what is be engaged with the closed cavity wall on the periphery of front end
Catch, the one-way valve block corresponding with the catch is connected with the closed cavity wall（2）, the confined air cavity wall
Along the rotating shaft on face（6）Side in circumferential direction, which is provided with, can limit the one-way valve block（2）Rotate so that its with it is described
Rotating shaft（6）First limiting plate of front end periphery fitting（14）；Set gradually in the closed cavity on rear side of the catch
There is lubricating pad piece（7）With sealing cushion（8）, it is described to cross lubricating pad piece（7）With sealing cushion（8）With the closed cavity wall and
The rotating shaft（6）It is engaged, it is described to cross lubricating pad piece（7）On offer front and rear insertion cross oil groove（17）, it is described to cross oil groove（17）
Head end close to the catch, it is described to cross oil groove（17）End close to the one-way valve block（2）, the sealing cushion（8）On
Oil groove can be crossed by described by being provided with（17）The oil-recovery tank that head and end is conducted（18）.
2. piano lifesaving hydraulic descent control device according to claim 1, it is characterised in that the closed cavity for cylinder, its with
The rotating shaft（6）It is coaxially disposed.
3. piano lifesaving hydraulic descent control device according to claim 2, it is characterised in that the front end closure of the closed cavity, institute
The rear end for stating closed cavity passes through screw thread and nut（12）It is fixedly connected, the nut（12）With the rotating shaft（6）Between set
There is rotating shaft set（11）.
4. piano lifesaving hydraulic descent control device according to claim 3, it is characterised in that at the front end face center of the closed cavity
It is provided with first boss（13）, the first boss（13）For cylinder, the rotating shaft（6）Front end face on be provided with it is described
First boss（13）The blind hole being engaged, the blind hole and the first boss（13）Between be provided with rotating shaft bottom set（4）.
5. piano lifesaving hydraulic descent control device according to claim 1, it is characterised in that rotating shaft wing is installed with the catch
Wing（5）.
6. piano lifesaving hydraulic descent control device according to claim 1, it is characterised in that the one-way valve block（2）One end set
There are the curved portions being flexibly connected with the closed cavity periphery, the one-way valve block（2）The other end close to described first
Limiting plate（14）Side be provided with smooth surface, the one-way valve block（2）The other end away from first limiting plate
（14）Side be provided with plane.
7. piano lifesaving hydraulic descent control device according to claim 6, it is characterised in that be provided with the closed cavity periphery
Second boss, the second boss are engaged with the curved portions, and the second boss is close to the side of the smooth surface
First limiting plate is set（14）, the second boss is being provided with the second limiting plate close to the side of the plane（15）,
Second limiting plate（15）Bottom tilts along the direction away from the plane.
8. piano lifesaving hydraulic descent control device according to claim 7, it is characterised in that be provided with limited post in the second boss
（16）, it is described to cross lubricating pad piece（7）On be provided with and the limited post（16）The limited impression being engaged（19）.
9. piano lifesaving hydraulic descent control device according to claim 1, it is characterised in that described to cross oil groove（17）Along the rotating shaft
（6）Circumferential direction extends, described to cross oil groove（17）End be connected with transition groove, the depth of the transition groove is along close to institute
State one-way valve block（2）Direction gradually become shallower as.
10. piano lifesaving hydraulic descent control device according to claim 1, it is characterised in that the sealing cushion（8）Pass through the first O
Type circle（9）It is tightly connected with the periphery of the closed cavity, the sealing cushion（8）Pass through the second O-ring（10）With it is described
Rotating shaft（6）Periphery be tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720579537.7U CN206921450U (en) | 2017-05-23 | 2017-05-23 | A kind of piano lifesaving hydraulic descent control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720579537.7U CN206921450U (en) | 2017-05-23 | 2017-05-23 | A kind of piano lifesaving hydraulic descent control device |
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| Publication Number | Publication Date |
|---|---|
| CN206921450U true CN206921450U (en) | 2018-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720579537.7U Active CN206921450U (en) | 2017-05-23 | 2017-05-23 | A kind of piano lifesaving hydraulic descent control device |
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| CN (1) | CN206921450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960665A (en) * | 2017-05-23 | 2017-07-18 | 宁波市五角阻尼股份有限公司 | A kind of piano lifesaving hydraulic descent control device |
-
2017
- 2017-05-23 CN CN201720579537.7U patent/CN206921450U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960665A (en) * | 2017-05-23 | 2017-07-18 | 宁波市五角阻尼股份有限公司 | A kind of piano lifesaving hydraulic descent control device |
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