CN105300336A - Piano key depth measuring instrument and piano key depth measuring method - Google Patents
Piano key depth measuring instrument and piano key depth measuring method Download PDFInfo
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- CN105300336A CN105300336A CN201510884913.9A CN201510884913A CN105300336A CN 105300336 A CN105300336 A CN 105300336A CN 201510884913 A CN201510884913 A CN 201510884913A CN 105300336 A CN105300336 A CN 105300336A
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Abstract
The invention relates to a piano key depth measuring instrument, comprising a measuring arm, a dial gauge, and a key press block for pressing a key. Left and right sides of the key press block are both provided with a vertical straight trough; the measuring arm extending in a horizontal direction penetrates the two vertical straight troughs and slides in a vertical direction along the vertical straight troughs; the left end of the measuring arm is located above the left key of a press key, and the right end of the measuring arm is located above the right key of the press key; the dial gauge is fixed on the key press block; the downward gauging head of the dial gauge is located directly above the measuring arm; when jacked up by left and right keys of the press key, the measuring arm jacks up the gauging head of the dial gauge to drive the dial gauge for reading. The invention also relates to a piano key depth measuring method. The piano key depth measuring instrument has a simple structure, is convenient to manufacture, remold and operate, can quantize sinkage values, and belongs to the piano production measuring technical field.
Description
Technical field
The present invention relates to piano production measuring technique, specifically, relate to the sub-depth calibrator of piano key and the sub-depth measurement method of piano key.
Background technology
Piano key attached bag draws together black key and Bai Jian, and the key depth survey in the application refers to Bai Jian.
The degree of depth adjustment of piano key is an important step during piano is produced, and adjustment requirement is: the degree of depth of each key meets standard, and all wants consistent.
In order to make all key degree of depth consistent, prior art is: press one by one to compare by skilled whole stringed-instrument player's staff and adjust.
But prior art exists following shortcoming: 1. need senior professional, adjust accurate difficulty large, common people are difficult to be competent at.2. sense of touch subjectivity is strong.3. staff depressed key, presses down dynamics difference at every turn, causes error.4. pair each key may need to press repeatedly perception, and just can compare, efficiency is low.
There is not the measurement mechanism of key sense of touch in prior art, more there is not the device of energy measure of precision key submergence depth.
Summary of the invention
For the technical matters existed in prior art, the object of the invention is: a kind of sub-depth calibrator of piano key and the sub-depth measurement method of piano key that accurately can measure key submergence depth are provided.
In order to achieve the above object, the present invention adopts following technical scheme:
The sub-depth calibrator of piano key, comprises the key briquetting of gage beam, clock gauge, next key of pressure; Key briquetting be each side provided with a vertical slots, along the gage beam of left and right directions horizontal-extending through two vertical slots and along the upper and lower slippage of vertical slots, the left end of gage beam is placed in the top of sub-left side keys of depressed key, and the right-hand member of gage beam is placed in the top of sub-right hand side keys of depressed key; Clock gauge is fixed on key briquetting, and the downward gauge head of clock gauge is positioned at directly over gage beam; After gage beam is pressed down the left and right sides key jack-up of key, the gauge head jack-up of clock gauge is driven clock gauge reading by gage beam.
Preferred as one, clock gauge comprises dial plate, fixed bar, gauge rod, gauge head; Facing up of dial plate, the fixed bar along fore-and-aft direction extension is fixed on the rear end of dial plate, and vertical gauge rod is fixed on the lower end of dial plate, and gauge head is positioned at gauge rod lower end.
Preferred as one, key briquetting comprises Left-side support part, Right side support part, left side fixed part, right side fixed part, top connector portion; Top connector portion between Left-side support part and right sustaining portion are divided, also between left side fixed part and right side fixed part; Dial plate is fixed on the upper end of Left-side support part and Right side support part, and fixed bar is clipped between left side fixed part and right side fixed part.
Preferred as one, the top of left side fixed part and right side fixed part is equipped with arc-shaped slot, and fixed bar is arranged in two arc-shaped slots; Gap is left between left side fixed part and right side fixed part, and both first lock-screw lockings by extending along left and right directions; During locking, gap smaller, two arc-shaped slots are fixedly clamped bar.
Preferred as one, the second lock-screw locking by extending along left and right directions between Left-side support part and right sustaining portion divide; Dial plate is clamped between Left-side support part and right sustaining portion divide; Vertical slots is opened in Left-side support part and Right side support part.
Preferred as one, the sub-depth calibrator of piano key also comprises the spacer that is stuck in the sub-front end of depressed key; Spacer is fixed on the front end of key briquetting, and the lower end of spacer is lower than top connector portion; The lower surface of top connector portion is plane.
Preferred as one, the upper end in the middle of gage beam is provided with a supporting plane that can contact with gauge head.
Preferred as one, gage beam comprises the cylindrical section, clamping section, interlude, clamping section, the cylindrical section that set gradually from left to right; The front end of clamping section is provided with vertical draw-in groove, and the front end of the inwall of vertical slots snaps in draw-in groove; Supporting plane is positioned at interlude.
Preferred as one, protective seam is posted in the lower surface of key briquetting.
The sub-depth measurement method of piano key, use the sub-depth calibrator of piano key, key briquetting is placed on the front end of key to be measured, key is pressed to extreme lower position by the deadweight by the sub-depth calibrator of piano key, depressed key produces difference in height with arranged on left and right sides key, gage beam upwards lifts along vertical slots relative to key briquetting by arranged on left and right sides key, and gauge head up pushes up by gage beam, directly obtains the degree of depth of sinking key according to the translation distance of gauge head from clock gauge reading.
Principle of the present invention is: transformed by existing clock gauge, makes it be applicable to the accurate measurement of the sub-degree of depth of piano key.The submergence depth of key to be measured is converted to the raising height of adjacent key, this raising height is the lifting height of gage beam relative to key briquetting, this lifting height is converted into the translation distance of gauge head, thus by the translation of gauge head, the submergence depth of key is directly read in clock gauge.
Generally speaking, tool of the present invention has the following advantages:
1. structure is simple, easy to make, and transformation is convenient, easy to operate.
2. general operation workman can be competent at through simple training, can accurately measure key submergence depth, be quantized by submergence depth.
3. clock gauge can be fixed by the first lock-screw and the second lock-screw, structure is simple, and mounting or dismounting are convenient.
4. can ensure that the sub-depth calibrator of piano key is all placed on correct position at every turn by spacer.
5. the setting of protective seam both can be anti-skidding, also can protect key sub-surface, prevent from scratching.
6. by the deadweight of clock gauge, be equipped with the weight of key briquetting and gage beam, key can be depressed, without the need to manpower pressing, ensure the unification of each pressing strength, thus ensure the unification of the measuring condition of each key.
Accompanying drawing explanation
Fig. 1 is the front view of key briquetting.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the sectional view of Fig. 2.
Fig. 5 is piano key depth calibrator measuring state schematic diagram, does not show spacer.
Fig. 6 is the left view of the sub-depth calibrator of piano key.
Fig. 7 is the front view of the sub-depth calibrator of piano key.
Fig. 8 is the left view of clock gauge.
Fig. 9 is the front view of gage beam.
Figure 10 is the vertical view of gage beam.
Figure 11 is the sectional view of Fig. 9 along A-A direction.
Figure 12 is the sectional view of Fig. 9 along B-B direction.
Wherein, 1 is key briquetting, and 2 is clock gauge, and 3 is gage beam, and 4 is key.
1-1 is vertical slots, and 1-2 is Left-side support part, and 1-3 is Right side support part, and 1-4 is left side fixed part, 1-5 is right side fixed part, and 1-6 is top connector portion, and 1-7 is arc-shaped slot, and 1-8 is gap, 1-9 is spacer, and 1-10 is the first lock-screw, and 1-11 is the second lock-screw.
2-1 is dial plate, and 2-2 is fixed bar, and 2-3 is gauge rod, and 2-4 is gauge head.
3-1 is cylindrical section, and 3-2 is clamping section, and 3-3 is interlude, and 3-4 is draw-in groove, and 3-5 is supporting plane.
Embodiment
Come that the present invention will be further described in detail below.
The sub-depth calibrator of piano key comprises: clock gauge, key briquetting, gage beam, spacer.
Clock gauge comprises: dial plate, fixed bar, gauge rod, gauge head.Facing up of dial plate, is convenient to read data.Fixed bar along fore-and-aft direction extension is fixed on the rear end of dial plate.Vertical gauge rod is fixed on the lower end of dial plate, and gauge head is positioned at gauge rod lower end.During measurement, gauge head is translation upwards, and clock gauge can read the translation distance of gauge head.
Key briquetting comprises Left-side support part, Right side support part, left side fixed part, right side fixed part, top connector portion.Top connector portion connects between Left-side support part and right sustaining portion are divided by below, also connect between left side fixed part and right side fixed part in below simultaneously, Left-side support part is in fixed part front, left side, and Right side support part is in fixed part front, right side.Dial plate is fixed on the upper end of Left-side support part and Right side support part; The second lock-screw locking by extending along left and right directions between Left-side support part and right sustaining portion divide, dial plate is clamped between Left-side support part and right sustaining portion divide.The lower end of dial plate, Left-side support part, right sustaining portion surround a space between dividing, and hold gauge rod, gauge head, gage beam.The vertical slots of bar shaped is opened in Left-side support part and Right side support part, and two vertical slots are symmetrical set.The top of left side fixed part and right side fixed part is equipped with arc-shaped slot, and fixed bar is arranged in the annular of two arc-shaped slot compositions.Gap is left between left side fixed part and right side fixed part, and both first lock-screw lockings by extending along left and right directions; During locking, gap smaller, the two arc-shaped slots bar that is fixedly clamped from both sides close to each other.The lower surface of top connector portion is plane, and protective seam is posted in this lower surface.The width of key briquetting is corresponding to the width of key, is slightly less than the width of key.
Gage beam is symmetrical, comprises the cylindrical section, clamping section, interlude, clamping section, the cylindrical section that set gradually from left to right.The diameter of cylindrical section is less than clamping section, and the front end of clamping section is provided with the vertical draw-in groove run through up and down, and the front end of the inwall of the vertical slots of key briquetting snaps in draw-in groove, to ensure that gage beam does not deflect.The supporting plane of level is positioned at interlude, is also positioned at the upper end of the centre of gage beam, is positioned at immediately below gauge head for contacting with gauge head.Along the gage beam of left and right directions horizontal-extending through two, left and right vertical slots and along the upper and lower slippage of vertical slots.The left end of gage beam is placed on sub-left side keys of depressed key, and the right-hand member of gage beam is placed on sub-right hand side keys of depressed key.
Spacer is fixed on the front end of key briquetting, and the lower end of spacer is lower than top connector portion.Spacer is for being stuck in the front end of key, and ensure to measure each key period of the day from 11 p.m. to 1 a.m, the sub-depth calibrator of piano key is all positioned at the ad-hoc location of each key.
The sub-depth measurement method of piano key is: front end key briquetting being placed on key to be measured, located by spacer, key is pressed to extreme lower position by the deadweight by the sub-depth calibrator of piano key, now depressed key produces difference in height with adjacent arranged on left and right sides key, gage beam upwards lifts along vertical slots relative to key briquetting by arranged on left and right sides key, gauge head up pushes up by the supporting plane of gage beam, directly obtains the degree of depth of sinking key according to the translation distance of gauge head from clock gauge reading.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. the sub-depth calibrator of piano key, is characterized in that: the key briquetting comprising gage beam, clock gauge, next key of pressure; Key briquetting be each side provided with a vertical slots, along the gage beam of left and right directions horizontal-extending through two vertical slots and along the upper and lower slippage of vertical slots, the left end of gage beam is placed in the top of sub-left side keys of depressed key, and the right-hand member of gage beam is placed in the top of sub-right hand side keys of depressed key; Clock gauge is fixed on key briquetting, and the downward gauge head of clock gauge is positioned at directly over gage beam; After gage beam is pressed down the left and right sides key jack-up of key, the gauge head jack-up of clock gauge is driven clock gauge reading by gage beam.
2. according to the sub-depth calibrator of piano key according to claim 1, it is characterized in that: described clock gauge comprises dial plate, fixed bar, gauge rod, gauge head; Facing up of dial plate, the fixed bar along fore-and-aft direction extension is fixed on the rear end of dial plate, and vertical gauge rod is fixed on the lower end of dial plate, and gauge head is positioned at gauge rod lower end.
3. according to the sub-depth calibrator of piano key according to claim 2, it is characterized in that: described key briquetting comprises Left-side support part, Right side support part, left side fixed part, right side fixed part, top connector portion; Top connector portion between Left-side support part and right sustaining portion are divided, also between left side fixed part and right side fixed part; Dial plate is fixed on the upper end of Left-side support part and Right side support part, and fixed bar is clipped between left side fixed part and right side fixed part.
4. according to the sub-depth calibrator of piano key according to claim 3, it is characterized in that: the top of described left side fixed part and right side fixed part is equipped with arc-shaped slot, fixed bar is arranged in two arc-shaped slots; Gap is left between left side fixed part and right side fixed part, and both first lock-screw lockings by extending along left and right directions; During locking, gap smaller, two arc-shaped slots are fixedly clamped bar.
5. according to the sub-depth calibrator of piano key according to claim 3, it is characterized in that: the second lock-screw locking by extending along left and right directions between described Left-side support part and right sustaining portion divide; Dial plate is clamped between Left-side support part and right sustaining portion divide; Vertical slots is opened in Left-side support part and Right side support part.
6. according to the sub-depth calibrator of piano key according to claim 3, it is characterized in that: it also comprises the spacer that is stuck in the sub-front end of depressed key; Spacer is fixed on the front end of key briquetting, and the lower end of spacer is lower than top connector portion; The lower surface of top connector portion is plane.
7. according to the sub-depth calibrator of piano key according to claim 1, it is characterized in that: the upper end in the middle of described gage beam is provided with a supporting plane that can contact with gauge head.
8. according to the sub-depth calibrator of piano key according to claim 7, it is characterized in that: described gage beam comprises the cylindrical section, clamping section, interlude, clamping section, the cylindrical section that set gradually from left to right; The front end of clamping section is provided with vertical draw-in groove, and the front end of the inwall of vertical slots snaps in draw-in groove; Supporting plane is positioned at interlude.
9. according to the sub-depth calibrator of piano key according to claim 1, it is characterized in that: protective seam is posted in the lower surface of described key briquetting.
10. the sub-depth measurement method of piano key, use the sub-depth calibrator of piano key according to any one of claim 1 to 9, it is characterized in that: front end key briquetting being placed on key to be measured, key is pressed to extreme lower position by the deadweight by the sub-depth calibrator of piano key, depressed key produces difference in height with arranged on left and right sides key, gage beam upwards lifts along vertical slots relative to key briquetting by arranged on left and right sides key, gauge head up pushes up by gage beam, directly obtains the degree of depth of sinking key according to the translation distance of gauge head from clock gauge reading.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510884913.9A CN105300336B (en) | 2015-12-03 | 2015-12-03 | The sub- depth calibrator of piano key and the sub- depth measurement method of piano key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510884913.9A CN105300336B (en) | 2015-12-03 | 2015-12-03 | The sub- depth calibrator of piano key and the sub- depth measurement method of piano key |
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| Publication Number | Publication Date |
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| CN105300336A true CN105300336A (en) | 2016-02-03 |
| CN105300336B CN105300336B (en) | 2017-11-24 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1165554A (en) * | 1997-08-26 | 1999-03-09 | Kawai Musical Instr Mfg Co Ltd | Pedal mechanism of grand piano |
| CN201946292U (en) * | 2010-11-25 | 2011-08-24 | 赵洪云 | Device for detecting states of keys of keyboard instrument without refitting and contacting keyboard instrument |
| CN202008816U (en) * | 2011-04-11 | 2011-10-12 | 周伟 | Submergence depth debugging device for piano key |
| US20130205974A1 (en) * | 2012-02-15 | 2013-08-15 | Yamaha Corporation | Keyboard device for electronic musical instrument |
| KR101352963B1 (en) * | 2013-07-10 | 2014-01-21 | 김두회 | A depth with leveling device for grand piano key |
| CN205300558U (en) * | 2015-12-03 | 2016-06-08 | 广州珠江恺撒堡钢琴有限公司 | Sub - degree of depth measuring apparatu of piano key |
-
2015
- 2015-12-03 CN CN201510884913.9A patent/CN105300336B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1165554A (en) * | 1997-08-26 | 1999-03-09 | Kawai Musical Instr Mfg Co Ltd | Pedal mechanism of grand piano |
| CN201946292U (en) * | 2010-11-25 | 2011-08-24 | 赵洪云 | Device for detecting states of keys of keyboard instrument without refitting and contacting keyboard instrument |
| CN202008816U (en) * | 2011-04-11 | 2011-10-12 | 周伟 | Submergence depth debugging device for piano key |
| US20130205974A1 (en) * | 2012-02-15 | 2013-08-15 | Yamaha Corporation | Keyboard device for electronic musical instrument |
| KR101352963B1 (en) * | 2013-07-10 | 2014-01-21 | 김두회 | A depth with leveling device for grand piano key |
| CN205300558U (en) * | 2015-12-03 | 2016-06-08 | 广州珠江恺撒堡钢琴有限公司 | Sub - degree of depth measuring apparatu of piano key |
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| CN105300336B (en) | 2017-11-24 |
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