CN209357447U - A kind of damping unit for fingerboard cover board - Google Patents
A kind of damping unit for fingerboard cover board Download PDFInfo
- Publication number
- CN209357447U CN209357447U CN201822058882.3U CN201822058882U CN209357447U CN 209357447 U CN209357447 U CN 209357447U CN 201822058882 U CN201822058882 U CN 201822058882U CN 209357447 U CN209357447 U CN 209357447U
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- slow
- sending down
- down abnormally
- abnormally ascending
- ascending cylinder
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Abstract
The utility model discloses a kind of damping units for fingerboard cover board, 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 utility model, it is in such a way that air pressure valve is matched with spring, phenomena such as greatly reducing the volume of damping unit, and do not have oil contamination, the damping unit is hidden in fingerboard cover board and the underface at piano phase twisting, substantially increases aesthetics and practicability.
Description
Technical field
The utility model relates to piano field, in particular to a kind of damping unit for fingerboard cover board.
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 resistance on the market
Buddhist nun's device 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 damping unit for fingerboard cover board, to solve the above problems.
Utility model content
For the shortcomings of the prior art, the purpose of the utility model is to provide one kind to be used for piano keyhoard cover
The damping unit of plate greatly reduces the volume of damping unit, and do not have in such a way that air pressure valve is matched with spring
Phenomena such as oil contamination, the damping unit are hidden in fingerboard cover board and the underface at piano phase twisting, substantially increase
Aesthetics and practicability.
In order to realize above-mentioned purpose according to the present utility model and other advantages, provide a kind of for fingerboard cover board
Damping unit, 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 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.
The utility model compared with prior art, the beneficial effect is that: its in such a way that air pressure valve is matched with spring,
Phenomena such as greatly reducing the volume of damping unit, and not having oil contamination, the damping unit are hidden in fingerboard cover board
Underface at piano phase twisting, substantially increases aesthetics and practicability.
Detailed description of the invention
Fig. 1 is the front view according to the damping unit described in the utility model for fingerboard cover board；
Fig. 2 is the longitudinal sectional view according to the damping unit described in the utility model for fingerboard cover board.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, the aforementioned and other mesh of the utility model
, features, aspects and advantages will be apparent, to enable those skilled in the art's refer to the instruction text real accordingly
It applies.In the accompanying drawings, for clarity, shape and size can be amplified, and identical attached drawing mark will be used in all figures
Note is to indicate the same or similar component.In the following description, such as center, thickness, height, length, front, back, rear portion,
The words such as the left side, the right, top, bottom, top, lower part are to be based on the orientation or positional relationship shown in the drawings.Particularly, " high
Degree " is equivalent to size from the top to the bottom, and " width " is equivalent to size from left to right, and " depth " is equivalent to be arrived in the past
Size afterwards.These relative terms are to be not intended to need specifically to be orientated for convenience and usually.Be related to attachment,
Connection etc. term (for example, " connection " and " attachment ") refer to these structures pass through intermediate structure directly or indirectly to one another fixation or
The relationship of attachment and movable or rigidly attached or relationship, unless otherwise clearly stating.
Referring to FIG. 1 and FIG. 2, include: for the damping unit 1 of fingerboard cover board
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 damping unit 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 damping unit 1 is not affected by fingerboard cover board oppressive force, returning spring 14 in figure
Its maximum length in limited range is extended to, and is still in oppression state, this results in slow drop bar 13 to be responded spring
14 prop 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, work as steel
When the decline of piano key board cover board folds, when touch end 131 receives the oppressive force of fingerboard cover board straight down, piston 135 is slowly
Ground slowly squeezes out the air in slow sending down abnormally ascending cylinder 11 by unidirectional air outlet valve 122, under the mating reaction of returning spring, so that steel
The impact force of piano key board cover board release is buffered；When fingerboard cover board, which rises, to be unfolded, oppress in the pressure in touch end 131
Urgent power gradually becomes smaller, so that touch end 131 gradually rises under the action of 14 restoring force of returning spring, and piston 135
It is also risen therewith under the related effect of slow drop bar 13, air is held under the suction of slow sending down abnormally ascending cylinder 11 by breather cheek valve 121
It is continuous to enter 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, damping unit 1 restores extremely again
The state as shown in Fig. 1 Fig. 2.
Number of devices and treatment scale described herein are the explanations for simplifying the utility model.To the utility model
Application, 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, it is not limited in institute in specification and embodiments
Column use, it can be applied to various fields suitable for the present invention completely, for those skilled in the art, can
Easily realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, this is practical
It is novel to be not limited to specific details and legend shown and described herein.
Claims (10)
1. a kind of damping unit (1) for fingerboard cover board 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. damping unit (1) as described in claim 1, which is characterized in that be connected with touch end at the top of slow drop bar (13)
(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 piston
(135), the inner sidewall continuous contact of the periphery of piston (135) and slow sending down abnormally ascending cylinder (11) is to form sealing.
3. damping unit (1) as claimed in claim 2, which is characterized in that offer tune on the lateral wall of slow sending down abnormally ascending cylinder (11)
It saves screw thread (112), the adjustment disk (142) with adjusting screw thread (112) bolt is arranged on slow sending down abnormally ascending cylinder (11).
4. damping unit (1) as claimed in claim 3, which is characterized in that set between touch end (131) and adjustment disk (142)
There are returning spring (14), which is sheathed on slow drop bar (13) and slow sending down abnormally ascending cylinder (11), and returning spring
(14) upper and lower ends are touched end (131) respectively and are limited with adjustment disk (142).
5. damping unit (1) as claimed in claim 4, which is characterized in that the lower surface of touch end (131) is integrally formed
There are the first axle sleeve (132) being arranged concentrically from top to bottom and the second axle sleeve (133), the radius of the second axle sleeve (133) is less than first
The radius of axle sleeve (132), so that the junction of the second axle sleeve (133) and the first axle sleeve (132) is formed with step section.
6. damping unit (1) as claimed in claim 5, which is characterized in that being arranged right below for the second axle sleeve (133) is bolted in
Delay the tightening nut (143) in drop bar (13), is arranged with matched position-arresting disk (141) in the step section, screws spiral shell
Position-arresting disk (141) is mutually tightened by female (143) with the step section.
7. damping unit (1) as claimed in claim 6, which is characterized in that returning spring (14) is set to position-arresting disk (141) and adjusts
It saves between disk (142), so that the lower surface continuous contact at the top of returning spring (14) and position-arresting disk (141).
8. damping unit (1) as described in claim 1, which is characterized in that sealing cover (136) includes horizontal segment and vertical section,
The horizontal segment is integrally combined with vertical section so that sealing cover (136) structure in T shape, and the vertical section is from the opening
It is deeply internal to slow sending down abnormally ascending cylinder (11), wherein the horizontal segment is covered in the top of the opening to seal to the opening
It closes, 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. damping unit (1) as claimed in claim 8, which is characterized in that the junction of the horizontal segment and vertical section is formed
There is shoulder, the shoulder is arranged with the first sealing ring (137) between the vertical section and slow sending down abnormally ascending cylinder (11) inner sidewall.
10. damping unit (1) as claimed in claim 8, which is characterized in that be equipped between the horizontal segment and slow drop bar (13)
The clamping sealing ring (139) being sheathed on slow drop bar (13), it is slow equipped with being sheathed between the vertical section and slow drop bar (13)
Second sealing ring (138) of bar (13) at least drops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058882.3U CN209357447U (en) | 2018-12-10 | 2018-12-10 | A kind of damping unit for fingerboard cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058882.3U CN209357447U (en) | 2018-12-10 | 2018-12-10 | A kind of damping unit for fingerboard cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209357447U true CN209357447U (en) | 2019-09-06 |
Family
ID=67798624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822058882.3U Active CN209357447U (en) | 2018-12-10 | 2018-12-10 | A kind of damping unit for fingerboard cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209357447U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360538A (en) * | 2018-12-10 | 2019-02-19 | 吴怡 | A kind of fingerboard cover board descending lifeline |
-
2018
- 2018-12-10 CN CN201822058882.3U patent/CN209357447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109360538A (en) * | 2018-12-10 | 2019-02-19 | 吴怡 | A kind of fingerboard cover board descending lifeline |
| CN109360538B (en) * | 2018-12-10 | 2024-05-07 | 吴怡 | Piano keyboard cover plate descent control device |
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