CN109360538A - A kind of fingerboard cover board descending lifeline - Google Patents
A kind of fingerboard cover board descending lifeline Download PDFInfo
- Publication number
- CN109360538A CN109360538A CN201811500861.0A CN201811500861A CN109360538A CN 109360538 A CN109360538 A CN 109360538A CN 201811500861 A CN201811500861 A CN 201811500861A CN 109360538 A CN109360538 A CN 109360538A
- Authority
- CN
- China
- Prior art keywords
- slow
- sending down
- down abnormally
- abnormally ascending
- ascending cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001174 ascending effect Effects 0.000 claims abstract description 63
- 238000007789 sealing Methods 0.000 claims abstract description 31
- 238000011109 contamination Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/16—Actions
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/16—Actions
- G10C3/20—Actions involving the use of hydraulic, pneumatic or electromagnetic means
Abstract
The invention discloses a kind of fingerboard cover board descending lifelines, comprising: the slow sending down abnormally ascending cylinder of inner hollow, the slow sending down abnormally ascending cylinder open wide at an upper portion thereof and be formed with opening；Sealing cover, the sealing cover are connected to the top of slow sending down abnormally ascending cylinder, to be sealed to the opening；Slow drop bar, the bottom end of the slow drop bar is after sealing cover deeply to the inside of slow sending down abnormally ascending cylinder, wherein the side of slow sending down abnormally ascending cylinder is connected equipped with slow sending down abnormally ascending valve, the slow sending down abnormally ascending valve with the bottom of slow sending down abnormally ascending cylinder.According to the present invention, it is in such a way that air pressure valve is matched with spring, phenomena such as greatly reducing the volume of descending lifeline, and do not have oil contamination, the descending lifeline is hidden in fingerboard cover board and the underface at piano phase twisting, substantially increases aesthetics and practicability.
Description
Technical field
The present invention relates to piano field, in particular to a kind of fingerboard cover board descending lifeline.
Background technique
Since the cover board volume of piano is big and general heavier, piano cover plate decline easily occurs to decline too fast cause when folding
User's finger crush or key damage, this problem is especially prominent for beginner.Currently, keyboard overlay on the market is slow
Falling unit mostly uses lifesaving hydraulic descent control device, and the general volume of lifesaving hydraulic descent control device is larger, and is easy to happen asking for permeability in use
Topic is exposed to outer first is that influence is overall beautiful, second is that the oil liquid of exudation is easy to pollute other components on piano.Have
In consideration of it, it is really necessary to develop a kind of fingerboard cover board descending lifeline, to solve the above problems.
Summary of the invention
For the shortcomings of the prior art, the object of the present invention is to provide a kind of slow drops of fingerboard cover board
Device greatly reduces the volume of descending lifeline, and does not have oil contamination etc. and is existing in such a way that air pressure valve is matched with spring
As the descending lifeline is hidden in fingerboard cover board and the underface at piano phase twisting, substantially increases aesthetics and practicability.
In order to realize above-mentioned purpose according to the present invention and other advantages, a kind of fingerboard cover board descending lifeline is provided,
Include:
The slow sending down abnormally ascending cylinder of inner hollow, the slow sending down abnormally ascending cylinder open wide at an upper portion thereof and are formed with opening；
Sealing cover, the sealing cover are connected to the top of slow sending down abnormally ascending cylinder, to be sealed to the opening；
Slow to drop bar, which deeply extremely delays the inside of sending down abnormally ascending cylinder after sealing cover,
Wherein, the side for delaying sending down abnormally ascending cylinder is equipped with slow sending down abnormally ascending valve, which is connected with the bottom of slow sending down abnormally ascending cylinder.
Preferably, delay and be connected with touch end at the top of drop bar, the radius of the touch end is greater than the radius of slow drop bar, delays drop
The bottom of bar is connected with piston, and the periphery of piston and the inner sidewall continuous contact of slow sending down abnormally ascending cylinder are sealed with being formed.
Preferably, delay and offer adjusting screw thread on the lateral wall of sending down abnormally ascending cylinder, be arranged on slow sending down abnormally ascending cylinder and adjust screw thread
The adjustment disk of bolt.
Preferably, returning spring is equipped between touch end and adjustment disk, which is sheathed on slow drop bar and slow drop
On inflator, and the upper and lower ends of returning spring are touched end respectively and are limited with adjustment disk.
Preferably, the lower surface of touch end is integrally formed the first axle sleeve and second being arranged concentrically from top to bottom
Axle sleeve, the radius of the second axle sleeve less than the first axle sleeve radius so that the junction of the second axle sleeve and the first axle sleeve is formed
There is step section.
Preferably, being arranged right below for the second axle sleeve is bolted in the slow tightening nut dropped on bar, covers in the step section
Equipped with matched position-arresting disk, position-arresting disk and the step section are mutually tightened by tightening nut.
Preferably, returning spring is set between position-arresting disk and adjustment disk, so that the top of returning spring and position-arresting disk
Lower surface continuous contact.
Preferably, sealing cover includes horizontal segment and vertical section, the horizontal segment integrally combined with vertical section so that
Sealing cover structure in T shape, the vertical section are goed deep into from the opening to slow sending down abnormally ascending cylinder, wherein the horizontal segment covering
In the top of the opening to be closed to the opening, the inner sidewall elastic connecting of the periphery of the vertical section and slow sending down abnormally ascending cylinder
Touching is to form sealing.
Preferably, the junction of the horizontal segment and vertical section is formed with shoulder, and the shoulder is arranged with positioned at described
The first sealing ring between vertical section and slow sending down abnormally ascending medial wall of the tube.
Preferably, the clamping sealing ring being sheathed on slow drop bar is equipped between the horizontal segment and slow drop bar, it is described
It is equipped between vertical section and slow drop bar and is sheathed on the second sealing ring of slow drop bar at least.
Compared with prior art, the present invention the beneficial effect is that: it is in such a way that air pressure valve is matched with spring, significantly
Phenomena such as reducing the volume of descending lifeline, and not having oil contamination, the descending lifeline are hidden in fingerboard cover board and piano phase
Underface at twisting substantially increases aesthetics and practicability.
Detailed description of the invention
Fig. 1 is the front view according to fingerboard cover board descending lifeline of the present invention；
Fig. 2 is the longitudinal sectional view according to fingerboard cover board descending lifeline of the present invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, foregoing end other objects of the invention, feature, side
Face and advantage will be apparent, and so that those skilled in the art can carry out according to the description.In the accompanying drawings,
For clarity, shape and size can be amplified, and will be indicated in all figures using identical appended drawing reference identical
Or similar component.In the following description, such as center, thickness, height, length, front, back, rear portion, the left side, the right, top
The words such as portion, bottom, top, lower part are to be based on the orientation or positional relationship shown in the drawings.Particularly, " height " is equivalent to from top
Portion is to the size of bottom, and " width " is equivalent to size from left to right, and " depth " is equivalent to vertical size.These
Relative terms are to be not intended to need specifically to be orientated for convenience and usually.It is related to the term of attachment, connection etc.
(for example, " connection " and " attachment ") refer to these structures by the relationship that intermediate structure is fixed directly or indirectly to one another or is attached,
And movable or rigidly attached or relationship, unless otherwise clearly stating.
Referring to FIG. 1 and FIG. 2, fingerboard cover board descending lifeline 1 includes:
The slow sending down abnormally ascending cylinder 11 of inner hollow, the slow sending down abnormally ascending cylinder 11 open wide at an upper portion thereof and are formed with opening；
Sealing cover 136, the sealing cover 136 are connected to the top of slow sending down abnormally ascending cylinder 11, to be sealed to the opening；
Slow to drop bar 13, which deeply extremely delays the inside of sending down abnormally ascending cylinder 11 after sealing cover 136,
Wherein, the side for delaying sending down abnormally ascending cylinder 11 is equipped with slow sending down abnormally ascending valve 12, the bottom phase of slow the sending down abnormally ascending valve 12 and slow sending down abnormally ascending cylinder 11
Connection.Further, the upper and lower ends for delaying sending down abnormally ascending valve 12 are respectively equipped with breather cheek valve 121 and unidirectional air outlet valve 122.Preferred
Embodiment in, the top of slow sending down abnormally ascending valve 12 is communicatively equipped with unidirectional air outlet valve 122, and the bottom of slow sending down abnormally ascending valve 12 is communicatively set
There is breather cheek valve 121, and the bottom of slow sending down abnormally ascending valve 12 is realized by gas circuit 123 and is connected with the bottom of slow sending down abnormally ascending cylinder 11.
Referring to Fig.1, the top for delaying drop bar 13 is connected with touch end 131, and the radius of the touch end 131 is greater than slow drop bar 13
Radius, the bottom of slow drop bar 13 are connected with piston 135, the inner sidewall continuous contact of the periphery of piston 135 and slow sending down abnormally ascending cylinder 11 with
Form sealing.In a preferred embodiment, delay the bottom of sending down abnormally ascending cylinder 11 equipped with the connecting hole for being connected in piano main body
111。
Further, delay to offer on the lateral wall of sending down abnormally ascending cylinder 11 and adjust screw thread 112, be arranged with and adjust on slow sending down abnormally ascending cylinder 11
Save the adjustment disk 142 of 112 bolt of screw thread.
Further, returning spring 14 is equipped between touch end 131 and adjustment disk 142, which is sheathed on slow
It drops on bar 13 and slow sending down abnormally ascending cylinder 11, and the upper and lower ends of returning spring 14 are touched end 131 respectively and are limited with adjustment disk 142
Position.In use, rotation the distance between adjustment disk 142 and touch end 131 can be adjusted by rotation adjustment disk 142, that is, adjust
Saved the compression travel of returning spring 14, so as to according to the weight of fingerboard cover board to the restoring force of returning spring 14 into
Row suitability is adjusted, so that the slow drop effect of descending lifeline 1 reaches best.
Referring to Fig. 2, the lower surface of touch end 131 is integrally formed the first axle sleeve 132 being arranged concentrically from top to bottom
With the second axle sleeve 133, the radius of the second axle sleeve 133 less than the first axle sleeve 132 radius so that the second axle sleeve 133 and
The junction of one axle sleeve 132 is formed with step section.
Further, being arranged right below for the second axle sleeve 133 is bolted in the slow tightening nut 143 dropped on bar 13, and described
Matched position-arresting disk 141 is arranged on stage, tightening nut 143 mutually screws position-arresting disk 141 with the step section solid
It is fixed.The stability that position-arresting disk 141 and slow drop bar 13 assemble can be improved in the step section.
In a preferred embodiment, returning spring 14 is set between position-arresting disk 141 and adjustment disk 142, so that replying bullet
The top of spring 14 and the lower surface continuous contact of position-arresting disk 141.
Further, sealing cover 136 include horizontal segment and vertical section, the horizontal segment integrally combined with vertical section so that
The structure in T shape of sealing cover 136 is obtained, the vertical section is goed deep into from the opening to slow sending down abnormally ascending cylinder 11, wherein the level
Section is covered in the top of the opening to close to the opening, the inside of the periphery of the vertical section and slow sending down abnormally ascending cylinder 11
Wall Elastic Contact is to form sealing.
Further, the junction of the horizontal segment and vertical section is formed with shoulder, and the shoulder is arranged with positioned at described
The first sealing ring 137 between vertical section and slow 11 inner sidewall of sending down abnormally ascending cylinder.Using this structure, can be improved sealing cover 136 with
The leakproofness that slow sending down abnormally ascending cylinder 11 is coupled.
Further, the clamping sealing ring being sheathed on slow drop bar 13 is equipped between the horizontal segment and slow drop bar 13
139, it is equipped between the vertical section and slow drop bar 13 and is sheathed on the second sealing ring 138 of slow drop bar 13 at least.Preferred real
It applies in mode, the bottom end of slow drop bar 13 is detachably connected with fixture nut 134, can be by screwing or unscrewing fixture nut
134, to achieve the purpose that load and unload piston 135, to realize the convenience of the replacement of piston 135.
Working principle:
Fig. 1 Fig. 2 show the state diagram that buffer 1 is not affected by fingerboard cover board oppressive force, and returning spring 14 is stretched in figure
Maximum length of the Zhan Zhiqi in limited range, and it is still in oppression state, this results in slow drop bar 13 to be responded spring 14
It props up to range, at this point, being filled with the air by inspiration after breather cheek valve 121 inside slow sending down abnormally ascending cylinder 11, works as piano
When keyboard overlay decline folds, when touch end 131 receives the oppressive force of fingerboard cover board straight down, piston 135 is gently
Air in slow sending down abnormally ascending cylinder 11 is slowly squeezed out by unidirectional air outlet valve 122, under the mating reaction of returning spring, so that piano
The impact force of keyboard overlay release is buffered；When fingerboard cover board, which rises, to be unfolded, oppress in the compressing in touch end 131
Power gradually becomes smaller, so that touch end 131 gradually rises under the action of 14 restoring force of returning spring, and piston 135 exists
It is also risen therewith under the related effect of slow drop bar 13, air is continued under the suction of slow sending down abnormally ascending cylinder 11 by breather cheek valve 121
It enters in slow sending down abnormally ascending cylinder 11, until the air pressure in slow sending down abnormally ascending cylinder 11 communicates with the outside world, at this point, buffer 1 restores to such as Fig. 1 again
State shown in Fig. 2.
Number of devices and treatment scale described herein are for simplifying explanation of the invention.To application of the invention,
Modifications and variations will be readily apparent to persons skilled in the art.
Although the embodiments of the present invention have been disclosed as above, but it is not limited in listed fortune in specification and embodiments
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily real
Now other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to
Specific details and legend shown and described herein.
Claims (10)
1. a kind of fingerboard cover board descending lifeline (1) characterized by comprising
The slow sending down abnormally ascending cylinder (11) of inner hollow, slow sending down abnormally ascending cylinder (11) are opened wide at an upper portion thereof and are formed with opening；
Sealing cover (136), which is connected to the top of slow sending down abnormally ascending cylinder (11), to be sealed to the opening；
Slow to drop bar (13), which passes through the inside that sealing cover (136) deeply extremely delay sending down abnormally ascending cylinder (11) afterwards,
Wherein, the side for delaying sending down abnormally ascending cylinder (11) is equipped with slow sending down abnormally ascending valve (12), the bottom of slow sending down abnormally ascending valve (12) and slow sending down abnormally ascending cylinder (11)
Portion is connected.
2. fingerboard cover board descending lifeline (1) as described in claim 1, which is characterized in that the top of slow drop bar (13) is affixed
There are touch end (131), the radius of the touch end (131) is greater than the radius of slow drop bar (13), and the bottom of slow drop bar (13) is connected with
The inner sidewall continuous contact of piston (135), the periphery of piston (135) and slow sending down abnormally ascending cylinder (11) is to form sealing.
3. fingerboard cover board descending lifeline (1) as claimed in claim 2, which is characterized in that the lateral wall of slow sending down abnormally ascending cylinder (11)
On offer and adjust screw thread (112), be arranged on slow sending down abnormally ascending cylinder (11) and the adjustment disk (142) that adjusts screw thread (112) bolt.
4. fingerboard cover board descending lifeline (1) as claimed in claim 3, which is characterized in that touch end (131) and adjustment disk
(142) returning spring (14) are equipped between, which is sheathed on slow drop bar (13) and slow sending down abnormally ascending cylinder (11), and
The upper and lower ends of returning spring (14) are touched end (131) respectively and are limited with adjustment disk (142).
5. fingerboard cover board descending lifeline (1) as claimed in claim 4, which is characterized in that the lower surface one of touch end (131)
Body formula it is formed with the first axle sleeve (132) for being arranged concentrically from top to bottom and the second axle sleeve (133), the half of the second axle sleeve (133)
Diameter less than the first axle sleeve (132) radius so that the second axle sleeve (133) and the junction of the first axle sleeve (132) are formed with
Step section.
6. fingerboard cover board descending lifeline (1) as claimed in claim 5, which is characterized in that the underface of the second axle sleeve (133)
Equipped with the tightening nut (143) being bolted on slow drop bar (13), matched position-arresting disk is arranged in the step section
(141), position-arresting disk (141) is mutually tightened by tightening nut (143) with the step section.
7. fingerboard cover board descending lifeline (1) as claimed in claim 6, which is characterized in that returning spring (14) is set to limit
Between disk (141) and adjustment disk (142), so that the lower surface continuous contact at the top of returning spring (14) and position-arresting disk (141).
8. fingerboard cover board descending lifeline (1) as described in claim 1, which is characterized in that sealing cover (136) includes horizontal segment
With vertical section, which is integrally combined with vertical section so that sealing cover (136) structure in T shape, the vertical section
It is deeply internal to slow sending down abnormally ascending cylinder (11) from the opening, wherein the horizontal segment is covered in the top of the opening to described
Opening is closed, and the inner sidewall Elastic Contact of the periphery of the vertical section and slow sending down abnormally ascending cylinder (11) is to form sealing.
9. fingerboard cover board descending lifeline (1) as claimed in claim 8, which is characterized in that the horizontal segment and vertical section
Junction is formed with shoulder, and the shoulder is arranged between the vertical section and slow sending down abnormally ascending cylinder (11) inner sidewall first close
Seal (137).
10. fingerboard cover board descending lifeline (1) as claimed in claim 8, which is characterized in that the horizontal segment and slow drop bar
(13) the clamping sealing ring (139) being sheathed on slow drop bar (13) is equipped between, between the vertical section and slow drop bar (13)
Delay second sealing ring (138) of drop bar (13) at least equipped with being sheathed on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500861.0A CN109360538B (en) | 2018-12-10 | 2018-12-10 | Piano keyboard cover plate descent control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811500861.0A CN109360538B (en) | 2018-12-10 | 2018-12-10 | Piano keyboard cover plate descent control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109360538A true CN109360538A (en) | 2019-02-19 |
| CN109360538B CN109360538B (en) | 2024-05-07 |
Family
ID=65330155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811500861.0A Active CN109360538B (en) | 2018-12-10 | 2018-12-10 | Piano keyboard cover plate descent control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109360538B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08115075A (en) * | 1994-10-13 | 1996-05-07 | Kawai Musical Instr Mfg Co Ltd | Buffer mechanism of keyboard lid |
| EP1246161A1 (en) * | 2001-03-30 | 2002-10-02 | Yamaha Corporation | Keyboard instrument |
| CN201117220Y (en) * | 2007-04-10 | 2008-09-17 | 康米塔 | Piano keyboard cap buffer |
| WO2009091742A1 (en) * | 2008-01-15 | 2009-07-23 | Geoghegan Daniel E | Support for a piano lid |
| CN204493571U (en) * | 2015-04-03 | 2015-07-22 | 福建省晋江市东石耐特克机械有限公司 | A kind of anti-collision rear shock absorber |
| CN204592122U (en) * | 2015-04-16 | 2015-08-26 | 刘海坤 | Gas recovery formula vibration damper |
| CN205722749U (en) * | 2016-04-13 | 2016-11-23 | 闫雨 | A kind of fingerboard slow descending device |
| CN209357447U (en) * | 2018-12-10 | 2019-09-06 | 吴怡 | A kind of damping unit for fingerboard cover board |
-
2018
- 2018-12-10 CN CN201811500861.0A patent/CN109360538B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08115075A (en) * | 1994-10-13 | 1996-05-07 | Kawai Musical Instr Mfg Co Ltd | Buffer mechanism of keyboard lid |
| EP1246161A1 (en) * | 2001-03-30 | 2002-10-02 | Yamaha Corporation | Keyboard instrument |
| CN201117220Y (en) * | 2007-04-10 | 2008-09-17 | 康米塔 | Piano keyboard cap buffer |
| WO2009091742A1 (en) * | 2008-01-15 | 2009-07-23 | Geoghegan Daniel E | Support for a piano lid |
| CN204493571U (en) * | 2015-04-03 | 2015-07-22 | 福建省晋江市东石耐特克机械有限公司 | A kind of anti-collision rear shock absorber |
| CN204592122U (en) * | 2015-04-16 | 2015-08-26 | 刘海坤 | Gas recovery formula vibration damper |
| CN205722749U (en) * | 2016-04-13 | 2016-11-23 | 闫雨 | A kind of fingerboard slow descending device |
| CN209357447U (en) * | 2018-12-10 | 2019-09-06 | 吴怡 | A kind of damping unit for fingerboard cover board |
Non-Patent Citations (1)
| Title |
|---|
| 梁剑非;: "钢琴的美观与安全探讨", 现代商贸工业, no. 17, 1 September 2010 (2010-09-01), pages 364 * |
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| Publication number | Publication date |
|---|---|
| CN109360538B (en) | 2024-05-07 |
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