CN105006225B - A kind of guitar chord fingering device - Google Patents
A kind of guitar chord fingering device Download PDFInfo
- Publication number
- CN105006225B CN105006225B CN201410171217.9A CN201410171217A CN105006225B CN 105006225 B CN105006225 B CN 105006225B CN 201410171217 A CN201410171217 A CN 201410171217A CN 105006225 B CN105006225 B CN 105006225B
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- Prior art keywords
- compression bar
- branch
- rotating arm
- spring
- chord fingering
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Abstract
The present invention provides a kind of guitar chord fingering devices, including：Shell；L-shaped key lever, the L-shaped key lever have the button stretched out from the housing side；Compression bar, the compression bar lower end have pressing plate, are composed according to chord fingering below the pressing plate and be provided with branch's compression bar；Rotating arm, described rotating arm one end are connect with the housing into rotation, and the other end is rotatablely connected with L-shaped key lever, and centre is connect with compression bar；Return spring；When pushing the button, the rotating arm rotation makes branch's compression bar push string to push the compression bar；When unclamping the button, the return spring makes the rotating arm return.It is more comfortable convenient when playing chord that the invention enables players.
Description
Technical field
The present invention relates to guitar field of accessories, and in particular to a kind of guitar chord fingering device.
Background technology
Guitar is worldwide popular musical instrument, when playing, it is often necessary to play chord.But such as Fig. 1
Shown, guitar chord fingering spectrum is sufficiently complex, and the fingering in chord fingering spectrum, close to 360 kinds, is commonly used from A to G
Also have ten several, and in each chord fingering, different fingers is needed to press the different grades on different strings, and it is lucky
He generally has 12 grades or 14 grades, needs to change handle when playing, this gives guitarist, especially beginner
Bring very big difficulty.Moreover, frequently pressing string, finger can be made to feel pain.
It is more convenient and more comfortable when to make guitarist play chord, the improvement project that technical staff is taken
Essentially both direction.
One direction be use electric controling mode, such as application No. is 201320460099.4, it is entitled " guitar and
Disclosed in the Chinese invention patent application of string fingering device and the guitar for installing this guitar chord fingering device ", using circuit board
Control calutron pushes string according to chord fingering motion.This scheme can realize more fingering, but cost is opposite
It is higher.
Another direction be using mechanical, such as on July 20th, 1991 submit application No. is 91220091.X's
In the Chinese utility model patent of entitled " guitar bullet sings device ", a kind of device is disclosed, is composed, is passed through according to left hand chord fingering
Button, slided in casing press string by key lever, orientation steel wire, short digital and long digital, realize and turn chord fingering
Turn to the purpose of button.But in that patent, casing needs in the radial direction being connected thereto in orientation steel wire, this for
An inherently very difficult thing for tiny orientation steel wire, moreover, a root long digital needs while pushing down more qins
String, overlap joint forms line connection between making these strings, and during the right hand fingers a stringed instrument, the vibration between string is mutually dry
It disturbs, along with the resonance of orientation steel wire, seriously destroys the music effect played, therefore although the program has proposed more than 20
Year, but sold substantially without such product in the market.Also, the scheme disclosed in the patent pushes button by the way of vertical compression
Handle, finger still need larger lower pressure, play the time it is longer when still can feel pain.As mechanical improvement,
Application number：201220635779.0, the applying date：2012-11-27, a kind of China of utility model title " guitar fingering device " are real
With in new patent, inventor by master control compression bar stir secondary pressure control bar in the way of avoid resonance problem.But in the program
Master control compression bar, secondary pressure control bar respectively have a shaft, and the pressure that finger pushes the button of master control compression bar is by under after secondary transmission
It is pressed onto string, the pressure loss is be easy to cause due to frictional force etc. in transmission process, along with a master control compression bar is with more
A branch bar, finger still need to larger power when pushing button.Moreover, when a certain grade of a string corresponds to multiple chords,
It is mutually wrong in the horizontal direction mutually to avoid interference with needs when i.e. multiple master control compression bars are required to one secondary pressure control bar of driving
It opens, this brings difficulty to arrangement.
Invention content
It can convert complicated guitar chord fingering to the device of button the object of the present invention is to provide a kind of, and tie
Structure is simple, operation is comfortable.
To achieve the above object, the embodiment provides following technical solutions：
A kind of guitar chord fingering device, including：Shell；L-shaped key lever, the L-shaped key lever has to be stretched from the housing side
The button gone out；Compression bar, the compression bar lower end have pressing plate, are composed according to chord fingering below the pressing plate and be provided with branch's compression bar；
Rotating arm, described rotating arm one end are connect with the housing into rotation, and the other end is rotatablely connected with L-shaped key lever, intermediate to connect with compression bar
It connects；Return spring；When pushing the button, the rotating arm rotation makes to push the compression bar under branch's compression bar
Press string；When unclamping the button, the return spring makes the rotating arm return.
Preferably, it is connected by motion changing mechanism between the compression bar and the rotating arm, thus by the rotating arm
Convert rotational motion be the compression bar linear motion.
Preferably, above-mentioned guitar chord fingering device further includes fagging, and guide sleeve, the pressure are provided on the fagging
Bar and branch's compression bar are slidably matched with the guide sleeve.
Preferably, at the position of the multiple chords of correspondence, there is partition wall in the guide sleeve, the partition wall is by institute
It states guide sleeve and is divided into multiple chambers, branch's compression bar sliding of the multiple chamber position corresponding with multiple compression bars respectively is matched
It closes.
Preferably, hold-down devices are fixed on the fagging, at the position of the multiple chords of correspondence, multiple branch's pressures
Bar pushes string by the same hold-down devices.
Preferably, the hold-down devices include press rods, spring cup and spring storehouse, and compression spring is provided in the spring storehouse,
There is the press rods flange, the spring storehouse to be fixed on the fagging, and the flange of the press rods is pressed on the compression spring
The spring storehouse is closed with the spring cup afterwards and the both ends of the press rods is made to be stretched out from the spring storehouse, the press rods
Upper end has pressure cover.
Preferably, the pressure cover has point with the surface that branch's compression bar contacts with each other.
Preferably, on the shell, being located at the position below the button has finger bracket.
Preferably, the shell is that can be opened and closed shell, the return spring be mounted on the shell and the rotating arm it
Between.
The present invention connects rotating arm using L-shaped key lever, and compression bar is connected to the shell tie point and L-shaped key of rotating arm
Between bar tie point, this enables first utilizes lever principle when pushing button, finger pushes button energy with smaller power
Pressure under larger string is obtained, operation is more comfortable；Secondly, resonance problem can be well solved using pressing plate；Again, L-shaped
Key lever enable pressing plate corresponding with each chord, branch's compression bar to there are enough spaces mutually to avoid on vertical direction,
It keeps button to be in the side lower position of shell again simultaneously, does not interfere with operation convenience.
Further, use motion changing mechanism by the convert rotational motion of rotating arm for the straight line of the vertical direction of compression bar
Movement can avoid branch's compression bar generation transverse movement during pushing from causing pressure string inaccurate.
Further, guide sleeve can ensure that branch's compression bar pushes the positional accuracy of string.
Further, at the position of the multiple chords of correspondence, using the guide sleeve with multiple chambers come for multiple points
Branch compression bar provides guiding, can not only improve the accuracy for pushing chord position, and can avoid different compression bars, branch's pressure
Collision or interference are generated between bar.
Further, at the position of the multiple chords of correspondence, multiple branch's compression bars push qin by the same hold-down devices
String so that playing different chords but needing when same position pushes string, lower pressure point is same, and guarantee is played different
Sound will not be run when chord.
Further, the hold-down devices that the embodiment of the present invention uses, are not only simple in structure, and spring storehouse itself also can
Enough dampening resonances.
Further, the point on surface that pressure cover contacts with each other with branch's compression bar can avoid two during pushing
Opposite sliding occurs between person causes pressure string unstable.
Further, the finger bracket below button can improve comfort when holding entire guitar chord fingering device.
Further, the opening and closing property of box body and the installation site of return spring improve the repair convenience of device.
Description of the drawings
Next specific embodiments of the present invention will be described in further detail in conjunction with attached drawing, wherein：
Fig. 1 is part guitar chord fingering spectrum；
Fig. 2 is the stereogram of the guitar chord fingering device of one embodiment of the present invention；
Fig. 3 is the vertical view of the guitar chord fingering device of one embodiment of the present invention；
Fig. 4 is the front view of the guitar chord fingering device of second embodiment of the present invention；
Fig. 5 is the front view of the guitar chord fingering device of the third embodiment of the present invention；
Fig. 6 is the front view of the guitar chord fingering device of the 4th embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the guide sleeve in Fig. 5；
Fig. 8 is the viewgraph of cross-section of the guide sleeve in Fig. 6；
Fig. 9 is the 4th branch's compression bar of embodiment and the cooperation schematic diagram of guide sleeve of the present invention；
Figure 10 is the stereogram of the press rods of the 4th embodiment of the present invention；
Figure 11 is the operating diagram of the hold-down devices of the 4th embodiment of the present invention；
Figure 12 is the course of work front view of hold-down devices in Figure 10；
Figure 13 is the explosive view of the hold-down devices of the 4th embodiment of the present invention.
Description of symbols in upper figure：Guitar chord fingering device 100, the first column 101, the second column 102, shaft 103, first
Rotating arm 104, the second rotating arm 105, the first compression bar 106, the second compression bar 107, the first key lever 108, the second key lever 109, first
Button 110, the second button 111, the first pressing plate 112, the second pressing plate 113, first branch's compression bar 114, second branch's compression bar 115,
First return spring 116, the second return spring 117, finger bracket 118, guide sleeve 119, fagging 120, third return spring
121, cam 122, upper shell 123, hold-down devices 124, partition wall 125, branch's compression bar 126, press rods 127, pressure cover 128,
Spring cup 129, spring storehouse 130, compression spring 131, point 132, flange 133, lower housing 134, guitar 200, neck 201, capo
202, string 203.
Specific implementation mode
In conjunction with Fig. 2, Fig. 3, shows the internal structure of guitar chord fingering device 100 for clarity, shell is saved
Slightly.On the first column 101 and the second column 102, shaft 103 is installed.104 one end of first rotating arm is rotated with shaft 103
Connection, the other end are rotatablely connected with L-shaped first key lever 108, and centre position between the ends is connect with the first compression bar 106.
More specifically, in the present embodiment, first rotating arm 104 and the first compression bar 106 are also rotation connection.First key lever 108 with
The opposite other end in 104 connecting pin of first rotating arm has the first button 110, and apparent from Fig. 6 as it can be seen that first presses
Key 110 is stretched out from housing side, as it can be seen that column 101,102 and shaft 103 can be considered as upper shell 123 in Fig. 3, Fig. 6
A part.Those of ordinary skill in the art it is envisioned that, first rotating arm 104, the second rotating arm 105 can also pass through hinge
Etc. modes directly connect with shell, and without the help of column 101,102.There is the first pressing plate 112 in 106 lower end of the first compression bar,
First pressing plate 112 is provided with multiple branch's compression bars 114.It is provided between the first column 101 and first rotating arm 104 first time
Position spring 116.Similarly, 105 one end of the second rotating arm is rotatablely connected with shaft 103, the other end and L-shaped second key lever 109
Rotation connection, centre position between the ends is connect with the second compression bar 107.More specifically, in the present embodiment, the second rotation
Arm 105 and the second compression bar 107 are also rotation connection.Second key lever 109 it is opposite with 105 connecting pin of the second rotating arm another
End has the second button 111, and the second button 111 is also stretched out from housing side.Have second in 107 lower end of the second compression bar
Pressing plate 113, the second pressing plate 113 are provided with multiple branch's compression bars 115.It is arranged between the second column 102 and the second rotating arm 105
There is the second return spring 117.Unlike, the string 203 that first branch's compression bar 114 and second branch's compression bar 115 are pushed is simultaneously
It is not exactly the same, this is because the first button 110, the second button 111 correspond to the different chords in chord fingering spectrum respectively, accordingly
Ground, the number and position of first branch's compression bar 114 and second branch's compression bar 115 will also be composed according to chord fingering to be configured, this
Sample, when pushing the first button 110,103 rotations make first point to first rotating arm 104 to push the first compression bar 106 around the shaft
Branch compression bar 114 pushes string 203 and realizes a kind of chord fingering, and when pushing the second button 111, the second rotating arm 105 rotates
The rotation of axis 103 makes second branch's compression bar 115 push string 203 and realizes another chord fingering to push the second compression bar 107.
Only realize two chord fingering in shown embodiment in figure 2 and figure 3, those skilled in the art being capable of easily root
Multiple chord fingering are realized according to expand.When unclamping the first button 110, the second button 111, the first return spring
116 and second return spring 117 drive 105 return of first rotating arm 104 and the second rotating arm respectively.As it can be seen that in the present embodiment
In, due to the leverage of first rotating arm 104, the second rotating arm 105, apply on the first button 110, the second button 111
Smaller power, it will be able to make first branch's compression bar 114, second branch's compression bar 115 generate larger lower pressure to string 203, make
It is more comfortable to obtain player.Also, since the first key lever 108 and the second key lever 109 are all L-shaped, on the one hand so that the first button
110 and second button 111 be located at the side of entire guitar chord fingering device 100, compared with being more convenient for grasping for the button of direct press type
Make；On the other hand, this space for leaving bigger in the vertical direction so that need to realize multiple chord fingering as shown in Figure 6
When, each pressing plate 112,113 etc. can be staggeredly arranged, and avoid interference with.In conjunction with Fig. 6 as it can be seen that on lower housing 134, it is located at the
The position of 111 lower section of one button 110 and the second button, there is finger bracket 118, finger bracket 118 to have the radian of fovea superior, symbol
Ergonomic designs are closed, such player can feel more comfortable when holding guitar chord fingering device 100.
With reference to figure 4, for clarity, the figure omits section components.With Fig. 2 and first reality illustrated in fig. 3
It applies example to compare, in a second embodiment of the present invention, also adds fagging 120, fagging 120 and the first column 101, second are vertical
Column 102 is fixedly connected or is directly fixedly connected with upper shell 123.On fagging 120, it is fixedly installed guide sleeve 119, the
One compression bar 106 is slidably matched with guide sleeve 119.During pushing the first button 110, the first compression bar 106 is removed to have and be erected
Outside straight downward componental movement, also there is lateral componental movement to enable to the first compression bar 106 by the effect of guide sleeve 119
The movement for pushing first branch's compression bar 114 is kept in a certain range, it is ensured that first branch's compression bar 114 can be pressed onto string 203
On.It is also equipped with third return spring 121 in guide sleeve 119, drives and is lifted on the first compression bar 106, and then drives the first rotation
104 return of pivoted arm.First return spring 116 can either use simultaneously with third return spring 121, can also be respectively adopted.
With reference to figure 5, similarly for clarity, the figure omits section components.From figure 5 it can be seen that the present invention's
In third embodiment, in order to make the first compression bar 106 only do the movement on vertical direction, is pushed on first rotating arm 104
The position of one compression bar 106 has processed cam face 122, and in this way when pushing the first button 110, first rotating arm 104 rotates,
But the first compression bar 106 only does vertical direction movement in guide sleeve 119, to ensure that first branch's compression bar 114 is accurately pressed onto
On string 203, water is not will produce up to pushing first branch's compression bar of end since first branch's compression bar 114 contacts string 203
Square upward sliding, it is ensured that pressure string is accurate.Those of ordinary skill in the art it is envisioned that, in first rotating arm 104 and first
It can also be connected by other motion changing mechanisms such as connecting rod slider, crank connecting link between compression bar 106, thus by first rotating arm
104 convert rotational motion is the linear motion of the first compression bar 106.
With reference to figure 6, in the 4th embodiment of the present invention, entire shell includes upper shell 123 and lower housing 134,
Middle lower housing 134 is fixed with neck 201, and upper shell 123 can overturn opening, expose guitar chord fingering device 100
Internal structure.In this embodiment, it is advantageous using the first return spring 116, opening upper shell 123 in this way can
Replacement is repaired to the first return spring 116.In the embodiment show in figure 6, guide sleeve 119 is and first branch's compression bar
114 are slidably matched, and hold-down devices 124 are fixed on fagging 120.
In some cases, a grade position between the capo 202 of a string 203 need it is corresponding multiple and
String, such as the third grade position shown in Fig. 1 for being required to push the 5th string when playing Cm, Cm11, Cm7 chord,
The third grade position for pushing the 5th string can be corresponded to by requiring multiple branch's compression bars in this way, it is sometimes desirable to up to five points
Branch compression bar pushes the same grade of same string, and this results in pressure string is difficult.As shown in fig. 7, the guide sleeve in the present embodiment
There is in 119 partition wall 125, to which guide sleeve to be divided into five chambers as shown in Figure 8, each chamber respectively with one
One branch's compression bar of compression bar is slidably matched.Certainly, the number of chamber is the string 203 according to 119 position of guide sleeve
What corresponding how many a chord fingering determined, such as the guide sleeve 119 of the position of the third grade of the 5th string is corresponded in fig.9
Three chambers are separated out by partition wall 125, each chamber respectively with the pushing of the compression bar of corresponding Cm, Cm11, Cm7 chord fingering
Branch's compression bar 126 of the position of the third grade of five strings is slidably matched (for clarity, one is only shown in Fig. 9).In this way, this
Just the restrained same guide sleeve 119 constrains a little branches compression bar 126, avoids interfering and convenient for arrangement.Meanwhile in correspondence
At the position of the third grade of 5th string, these branch's compression bars 126 push string 203 by the same hold-down devices 124, this
It ensure that for each grade position of every string 203, only there are one hold-down devices 124 when playing different chords
String is pressed, the accuracy of tone is ensure that, avoids the third grade that branch's compression bar 126 when playing different chords is pressed in the 5th string
Different location causes to run sound.
With reference to figure 10, which particularly illustrate the press rods 127 and pressure cover 128 employed in hold-down devices 124.Pressure cover
Five positions shown on 128 are corresponding with five chambers in Fig. 8 respectively, i.e., different branch's compression bars 126 can be pressed onto pressure
The different location of lid 128.When using simple press rods 127 and pressure cover 128 as hold-down devices 124,127 meeting of press rods
Stress shakiness is led to the problem of, is easy to happen and is overturn and then cause to skid on string 203.To solve the problems, such as this, in the present embodiment
Hold-down devices 124 use structure as shown in Figure 11 to Figure 13.
From Figure 11 to Figure 13 as it can be seen that hold-down devices 124 include press rods 127, spring cup 129 and spring storehouse 130.In spring
Compression spring 131 is provided in storehouse 130.Press rods 127 have flange 133.Spring storehouse 130 is fixed on fagging 120.According to such as Figure 13
Shown in erection sequence, press rods 127 are packed into spring storehouse 130 first, the flange 133 of press rods 127 is pressed on compression spring 131
Afterwards, spring cup 129 is installed to close spring storehouse 130 from upper end, and the upper and lower ends of press rods 127 are kept from spring storehouse
It is stretched out in 130, pressure cover 128 finally is installed in the upper end of press rods 127 again.After being completed, branch's compression bar 126 is by lower pressure
Pressure cover 128, press rods 127 are passed to, it is final to push string 203, while compression spring 131 is compressed, when branch's compression bar 126 rises
Compression spring 131 restores.In this way, even if different branch's compression bars 126 is different to the point of application of pressure cover 128, spring storehouse 130 and spring
Lid 129 can ensure that press rods 127 still can keep moving in the vertical direction, without overturning, ensureing that pressure string is accurate
Really.In addition, spring storehouse 130 itself is used as an accumulation of energy part, the vibration of string can be prevented, which to be communicated up, influences other branch's pressures
Pushing of the bar to other strings.
It is apparent by Figure 12 as it can be seen that the surface that pressure cover 128 and branch's compression bar 126 contact with each other has point 132, avoid
Branch's compression bar 126 skids during pushing.
Although present invention combination above example is described, the present invention is not limited to above-described embodiment,
Those of ordinary skill in the art can easily carry out it equivalence replacement and modification, but and without departing from the claim of the present invention
Protection domain.
Claims (9)
1. a kind of guitar chord fingering device, which is characterized in that including：
Shell；
L-shaped key lever, the L-shaped key lever have the button stretched out from the housing side；
Compression bar, the compression bar lower end have pressing plate, are composed according to chord fingering below the pressing plate and be provided with branch's compression bar；
Rotating arm, described rotating arm one end are connect with the housing into rotation, and the other end is rotatablely connected with L-shaped key lever, intermediate and pressure
Bar connects；
Return spring；
When pushing the button, the rotating arm rotation makes branch's compression bar push string to push the compression bar；When
When unclamping the button, the return spring makes the rotating arm return.
2. guitar chord fingering device according to claim 1, which is characterized in that lead between the compression bar and the rotating arm
Motion changing mechanism connection is crossed, to the linear motion by the convert rotational motion of the rotating arm for the compression bar.
3. guitar chord fingering device according to claim 1, which is characterized in that further include fagging, be arranged on the fagging
There are guide sleeve, the compression bar and branch's compression bar to be slidably matched with the guide sleeve.
4. guitar chord fingering device according to claim 3, which is characterized in that at the position of the multiple chords of correspondence, institute
Stating has partition wall in guide sleeve, the guide sleeve is divided into multiple chambers, the multiple chamber point by the partition wall
Branch's compression bar of the position not corresponding with multiple compression bars is slidably matched.
5. guitar chord fingering device according to claim 4, which is characterized in that hold-down devices are fixed on the fagging,
At the position of the multiple chords of correspondence, multiple branch's compression bars push string by the same hold-down devices.
6. guitar chord fingering device according to claim 5, which is characterized in that the hold-down devices include press rods, bullet
Spring lid and spring storehouse are provided with compression spring in the spring storehouse, and the press rods have flange, and the spring storehouse is fixed on the support
On plate, the flanges of the press rods closes the spring storehouse with the spring cup after being pressed on the compression spring and makes the press rods
Both ends stretched out from the spring storehouse, the upper ends of the press rods has pressure cover.
7. guitar chord fingering device according to claim 6, which is characterized in that the pressure cover and branch's compression bar phase
The surface mutually contacted has point.
8. guitar chord fingering device according to claim 1, which is characterized in that on the shell, be located under the button
The position of side has finger bracket.
9. guitar chord fingering device according to claim 1, which is characterized in that the shell is that can be opened and closed shell, described
Return spring is mounted between the shell and the rotating arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171217.9A CN105006225B (en) | 2014-04-25 | 2014-04-25 | A kind of guitar chord fingering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410171217.9A CN105006225B (en) | 2014-04-25 | 2014-04-25 | A kind of guitar chord fingering device |
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| Publication Number | Publication Date |
|---|---|
| CN105006225A CN105006225A (en) | 2015-10-28 |
| CN105006225B true CN105006225B (en) | 2018-09-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410171217.9A Expired - Fee Related CN105006225B (en) | 2014-04-25 | 2014-04-25 | A kind of guitar chord fingering device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107538500A (en) * | 2017-08-23 | 2018-01-05 | 南通理工学院 | Bass playing robot |
| CN107767730B (en) * | 2017-11-17 | 2021-07-02 | 温州大学瓯江学院 | Multi-fingering-method Chinese zither playing device capable of playing smoothly |
| CN108538272B (en) * | 2018-06-14 | 2023-08-15 | 徐正奇 | Guitar playing auxiliary string pressing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1514778A (en) * | 1974-08-30 | 1978-06-21 | Castillo J Del | Apparatus for use when playing a stringed instrument |
| US4363256A (en) * | 1978-11-15 | 1982-12-14 | Smith Robert L | Easy fret |
| US4428273A (en) * | 1981-01-27 | 1984-01-31 | Favron Emile H | Automatic chorder for stringed instruments |
| US4566365A (en) * | 1984-10-05 | 1986-01-28 | Huston Jr Roy E | Chord playing attachment for stringed musical instruments |
| CN2119702U (en) * | 1991-07-20 | 1992-10-21 | 周有嵩 | Apparatus for playing guitar |
| CN1310436A (en) * | 2000-02-25 | 2001-08-29 | 梅兼毓 | Plucked string instrument and its string clamp |
| CN203799630U (en) * | 2014-04-25 | 2014-08-27 | 周建峰 | Guitar chord fingering device |
-
2014
- 2014-04-25 CN CN201410171217.9A patent/CN105006225B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1514778A (en) * | 1974-08-30 | 1978-06-21 | Castillo J Del | Apparatus for use when playing a stringed instrument |
| US4363256A (en) * | 1978-11-15 | 1982-12-14 | Smith Robert L | Easy fret |
| US4428273A (en) * | 1981-01-27 | 1984-01-31 | Favron Emile H | Automatic chorder for stringed instruments |
| US4566365A (en) * | 1984-10-05 | 1986-01-28 | Huston Jr Roy E | Chord playing attachment for stringed musical instruments |
| CN2119702U (en) * | 1991-07-20 | 1992-10-21 | 周有嵩 | Apparatus for playing guitar |
| CN1310436A (en) * | 2000-02-25 | 2001-08-29 | 梅兼毓 | Plucked string instrument and its string clamp |
| CN203799630U (en) * | 2014-04-25 | 2014-08-27 | 周建峰 | Guitar chord fingering device |
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|---|---|
| CN105006225A (en) | 2015-10-28 |
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