CN111768752A

CN111768752A - Key guiding and key gap adjusting device for electronic music keyboard

Info

Publication number: CN111768752A
Application number: CN202010415279.5A
Authority: CN
Inventors: 陈立
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-10-13

Abstract

The invention discloses a key guiding and key gap adjusting device for an electronic music keyboard, and relates to the technical field of key guiding and key gap adjusting in the electronic music keyboard, in particular to a keyboard support (30), a white key (10), a black key (40) and a key guiding and key gap adjusting device (20). The key guiding and key clearance adjusting device (20) is provided with a mounting hole (23), a rotating arm (24), a counterpoint mark (21), a fixing groove (25), a guiding mechanism (22) and an adjusting device (26). The key is fixed on the keyboard support (30) through the rotating shaft (33), the key guiding and key clearance adjusting device (20) is installed at the other end of the keyboard support (30), and a guiding mechanism (22) of the key guiding and key clearance adjusting device (20) extends to the inside of the key (10, 40) and is in mutual contact with two faces (11) in the key, so that the guiding and clearance adjusting functions are achieved.

Description

Key guiding and key gap adjusting device for electronic music keyboard

Technical Field

The invention relates to the technical field of key guiding and key gap adjusting devices in an electronic music keyboard, in particular to a key guiding and key gap adjusting device for an electronic music keyboard.

Background

At present, the key guiding and key gap adjusting technology of the electronic keyboard is a problem which is difficult to solve, most key guiding mechanisms do not have the function of adjusting the key gap, whether the key gap is consistent or not is an important parameter for evaluating whether a keyboard is qualified or not, because most keys are injection molded, the shapes of white keys of each group are different, some keys are symmetrical or some keys are asymmetrical, and the positions and the directions of deformed keys of the same mold are different, the original designed gaps are consistent keyboards, the sizes of the key gaps produced are inconsistent, except the gaps caused by the deformation problem of the keys, the problems of a keyboard bracket and the assembly problem are possibly caused to be inconsistent, in conclusion, it is very difficult to achieve the complete consistency of the key gaps by controlling the production processes of the keys and the bracket, in order to enable the key gaps to meet the requirements, the following methods are currently used for adjustment: the guide piece is adjusted, feeding is carried out on one side with a large key gap, and meanwhile, material is reduced on the other side, so that the method is low in efficiency and unreliable, potential quality hazards are caused, the other method is that the guide piece or a key is deformed to adjust the key gap, the mode is mainly aimed at a metal keyboard support, the key gap adjusted in the mode can rebound, the hand feeling can be influenced, the part replacing mode can be influenced, and the like.

At present, patent No. ZL200910129391.6, published by yamaha corporation on 30.9.2009, describes a key guiding technique capable of adjusting a key gap. This technique is through setting up the mode of guide part on the key frame then at the support of guide part top, through the mechanism (draw-in groove cooperation) adjustment key clearance on the guide part and the direction action of key, and the technique that this patent provided is because following several problems are hardly realized in practical application:

1 because the clearance difference of key just is not big originally, often can not reach the effect of wanting through the mode location of draw-in groove (the draw-in groove has the restriction in the aspect of the size, and the draw-in groove is too little the reliability not good, difficult processing, and the draw-in groove is too big, does not play the effect of adjusting).

2, the proposal can be adjusted only after the key is removed, thus being unintuitive and low in efficiency.

And 3, the contact area of the guide part is too small, and the guide effect is poor. Key noise may occur during use.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a key guiding and key gap adjusting device for an electronic music keyboard, which solves the problems that the gap difference of keys in the background technology is not large originally, the positioning is often not capable of achieving the desired effect in a clamping groove mode (the clamping groove has the limitation of size, the clamping groove is too small, the reliability is not good, the processing is difficult, the clamping groove is too large, the adjusting effect cannot be achieved), the adjustment can be realized only after the keys are removed, the key guiding and key gap adjusting device is not intuitive, the efficiency is low, the contact area of a guiding part is too small, and the guiding effect is not good. The key noise may be generated during the use process, and the key clearance cannot be effectively adjusted by the scheme under certain extreme conditions.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a key direction and key clearance adjusting device for among electronic music keyboard, includes keyboard support, key direction and key clearance adjusting device, keyboard support one end is equipped with the keyboard button that can rotate at the certain limit, the pilot hole has been seted up on keyboard support other end surface, key direction and key clearance adjusting device assemble on the pilot hole of support, key direction and key clearance adjusting device's alignment mark aligns with keyboard support's mark, and has seted up the adjustment tank keyboard button one end bottom, direction and key clearance adjusting device extend to key adjustment tank inboard, adjusting device has been seted up to key direction and key clearance adjusting device base inside.

Optionally, the alignment mark is aligned with an alignment mark on the keyboard support, and the alignment mark and the key guiding and key gap adjusting device are in an integrated structure. And the keyboard bracket and the alignment mark thereon are in an integrated structure

Optionally, the key adjusting groove and the keyboard keys are in an injection molding integrated structure.

Optionally, the key adjustment grooves are distributed on both sides of the key guide.

Optionally, the axis of the key guide base coincides with the axis of the assembly hole, and the key guide base is movably connected with the assembly hole of the keyboard support.

Optionally, the adjusting tool is of an L-shaped structure, and the structural size and the cross-sectional shape of the outer opening of the adjusting column are matched with those of the inner openings of the adjusting device and the mounting hole.

Optionally, the adjusting device of the key guiding and key gap adjusting device forms a rotating structure between the keyboard support assembly hole, the base, the rotating arm and the guiding mechanism, and the keyboard support assembly hole is movably connected with the key guiding base.

Optionally, the key adjusting groove forms a rotating structure through the guide mechanism, the rotating arm and the base, and the side surface of the key adjusting groove is attached to the side surface of the guide mechanism.

The invention provides a key guiding and key gap adjusting device for an electronic music keyboard, which has the following beneficial effects:

1. this a key direction and key clearance adjusting device for among electronic music keyboard, when the not waiting in clearance between the keyboard button, only need inject adjusting tool adjusting device, thereby it supports the key adjustment inslot side and carries out the level and promote to rotate clockwise or anticlockwise rotation adjusting tool can make key direction base along with it to rotate, thereby adjust the clearance difference between the keyboard button, make the interval distribution homogenization between the keyboard button, and need not to tear down the keyboard button and can adjust, compare with the regulation method before, it is more directly perceived high-efficient.

2. When the key guiding and key gap adjusting device for the electronic music keyboard is used for adjusting the gap difference between the keys of the keyboard, the influence on the hand feeling of the keys after the gap is adjusted is very small because the size of the guiding mechanism in the key guiding and key gap adjusting device in the width direction of the keyboard (namely the difference of D2-D1 in figures 9-12 is not changed) in the adjusting process.

3. When the key guide and key gap adjusting device for the electronic music keyboard is arranged on the keyboard support, the alignment mark of the key guide and key gap adjusting device needs to be aligned with the alignment mark on the keyboard support, the arrangement is favorable for standardizing the assembly of the keys of the keyboard, and the gap irregularity among the keys of the keyboard is avoided.

4. The key guide and key gap adjusting device for the electronic music keyboard has small gap between the key guide mechanism and the key adjusting groove, and is beneficial to storing lubricating oil.

5. The key guide and key gap adjusting device for the electronic music keyboard is provided with a soft rubber key between the contact surface of the key guide and the key adjusting groove, and is beneficial to absorbing key noise.

6. This a key direction and key clearance adjusting device for among electronic music keyboard, after finishing to the poor adjustment in clearance between the keyboard button, through to keyboard support position fixed slot and the inside fixed injection of key direction and key clearance adjusting device's fixed slot mould the fat, mould the fat and solidify the back and can make the relative position of key direction and key clearance adjusting device and keyboard support remain unchanged to prevent that key direction and key clearance adjusting device from appearing rotatoryly by oneself in the use, prevent that the clearance between the keyboard button from appearing changing.

Drawings

FIG. 1 is a schematic view of the front view of the present invention;

FIG. 2 is a schematic top view of a keyboard key;

FIG. 3 is a schematic diagram illustrating an uneven key gap of a keyboard;

FIG. 4 is a schematic top view of the keyboard key according to the present invention;

FIG. 5 is a schematic view of the overall front view of the internal structure of the present invention;

FIG. 6 is a schematic top view of the internal structure of FIG. 5 according to the present invention

FIG. 7 is an enlarged view of the structure at A in FIG. 5 according to the present invention;

FIG. 8 is a schematic view of the pitch structure of the mounting groove of the present invention;

FIGS. 9 to 12 are schematic structural views of a key connecting key and a key guiding member capable of adjusting a gap between keys of a keyboard according to the present invention;

FIG. 13 is a schematic view showing a condition in which key guides of different structures are in contact with key connection keys;

fig. 14 is a schematic view of several possible connection structures of the key connecting key and the key guide.

The symbol shows that:

a white key (10); a key guide and key gap adjusting device (20); a keyboard support (30);

a black key (40) (since the black key and white key are the same in basic principle, only the white key will be explained below); the tool 50 is adjusted.

Wherein: the white key (10) comprises a white key adjusting groove contact surface (11), a white key adjusting groove (12), a mounting hole (13) and the like.

Wherein: the key guiding and key gap adjusting device (20) comprises an alignment mark (21), and the guiding mechanism (22) comprises a mounting hole (23), a rotating arm (24), a fixing groove (25), an adjusting device (26), a guiding surface (27), a base (28) and the like.

Wherein: the keyboard support (30) comprises an alignment mark (31), a position fixing groove (32), a rotating shaft (33), an assembling hole (34) and the like.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 14, the present invention provides a technical solution: the utility model provides a key direction and key clearance adjusting device for among electronic music keyboard, including keyboard support (30), key direction and key clearance adjusting device (20) and white key (10) and black key (40), keyboard support (30) link together through pivot (33) with connecting white key (10) and black key (40), and make it can revolve rotation axis (33) in certain extent, white key (10) evenly distributed is on keyboard support (30), pilot hole (34) have been seted up to the other end of keyboard support (30), base (28) in key direction and the key clearance adjusting device (20) link together with the axle center cooperation of pilot hole (34). When the key guiding and key clearance adjusting device (20) is assembled, the adjusting tool (50) is inserted into the mounting hole (23) and rotates for a plurality of circles, and the alignment mark (21) is required to be aligned with the alignment mark (31). To ensure that the relative orientation of each key guide and key gap adjustment device (20) with respect to the keyboard support (30) is consistent.

A guide mechanism (22) in the key guiding and key clearance adjusting device (20) extends into a white key adjusting groove (12) of the white key (10) and is in tangent fit with a white key adjusting groove contact surface (11) through a guide surface (27) of the guide mechanism (22), wherein lubricating grease is required between the guide surface (27) and the white key adjusting groove contact surface (11). In special cases, a soft rubber part can be sleeved outside the guide surface (27) to absorb the noise of the guide surface.

After the keys (10, 40) and the key guiding and key gap adjusting device (20) are arranged on the keyboard bracket (30) as required, if the key gap is found to be uneven and needs to be adjusted, only the adjusting tool (50) needs to be inserted into the adjusting device (26) of the key guiding and key gap adjusting device (20), and the adjusting tool (50) is clockwise or anticlockwise rotated as required, at the moment, the base (28) drives the guide mechanism (22) to rotate through the rotating arm (24), and the guide mechanism (22) extrudes or pushes or pulls the white key adjusting groove contact surface (11) through the guide surface (27), so that the adjusted keys move towards the required direction, and the purpose of adjusting the key gap of the keys (10, 40) is achieved.

After the key clearance is adjusted, resin is filled in the fixing grooves (25) on the key guiding and key clearance adjusting device (20) and the fixing grooves (32) on the keyboard support (30), and the key guiding and key clearance adjusting device (20) is guaranteed not to loosen in the using process after the resin is solidified, so that the stability after the key clearance is adjusted is guaranteed.

Since the dimension D2 remains constant during the adjustment, the difference in the dimensions D1 and D2 remains constant, so that the hand feel before and after adjustment does not change much theoretically.

From the above adjusting process, the technical scheme does not need to disassemble keys, does not need to analyze the reasons of key gap generation, does not need to adjust other parts, can adjust the gap very intuitively, and has the advantages of high efficiency, reliable performance after adjustment, intuition and the like compared with the traditional adjusting scheme.

To sum up, when the key guiding and key gap adjusting device for the electronic music keyboard is used, firstly, as shown in fig. 3, when the gap difference between the keyboard keys 2 is unequal, namely, the situation that D1 is obviously unequal to D2 is reflected, the adjusting tool (50) is inserted from the adjusting device (26), and the base (28) can press or push the white key adjusting groove contact surface (11) through the guide surface (27) by rotating the adjusting tool (50) clockwise or anticlockwise through the rotating arm (24) and the guide mechanism (22), and the white key adjusting groove contact surface (11) moves towards the left or the right in the width direction of the white key (10) through the white key adjusting groove (12), so that the purpose of adjusting the gap difference between the keyboard keys is achieved;

then, fig. 9 to 12 are illustrations of several possible dimensions of the implementation of the solution, which require:

D1>D2.

d cannot be equal to zero

FIG. 13 illustrates four possible dimensional changes after contact surface rotation:

in the a, assuming that the contact surface (11) of the white key adjusting groove is in contact with the inner wall surface of the guide surface (27), the contact surfaces at two sides are two hemispherical surfaces, the two hemispherical surfaces are plane surfaces, the two hemispherical surfaces are not concentric, and the size becomes small after the rotation, namely D1 is larger than D2;

in b, assuming that the size of the white key adjusting groove contact surface (11) and the size of the guide surface (27) are increased after the white key adjusting groove contact surface is rotated for a certain angle, and the size is decreased after the white key adjusting groove contact surface is rotated for a certain angle, namely, D1 is larger than D2, and finally D2 is larger than D1;

in c, assuming that two non-concentric arc surfaces and two planes are in contact in 4 surfaces of the white key adjusting groove contact surface (11) and the inner wall surface of the guide surface (27), the size is reduced after rotation, namely D1 is larger than D2;

d, assuming that of 4 surfaces of the contact surface (11) of the white key adjusting groove and the inner wall surface of the guide surface (27), two circular arc cylindrical surfaces which belong to the same circle center and have the same radius are in contact with two planes, and if the angle a rotating around the O point is smaller than the angle b in the figure, D is equal to D1;

by comparing the dimensional stability after rotation for the four possible shapes above, only one cylindrical surface in the two sets of surfaces can be the other set of surfaces as shown in fig. 9, fig. 10. Or one set of the surfaces is a plane and the other set of the surfaces is concentric circular arc surfaces with the same diameter as shown in the figures 11 and 12. Under the condition that the arc surface is in tangential contact with the plane, the values of the dimension D1 minus D2 are not changed in the width direction of the keyboard in the process of adjusting the key clearance of the guide mechanism (22), so that the stability and consistency of the guide mechanism are ensured;

after the key clearance is adjusted, resin is filled in the fixing groove (25) on the key guiding and key clearance adjusting device (20) and the fixing groove (32) on the keyboard support (30), and the key guiding and key clearance adjusting device (20) is not loosened in the using process after the resin is solidified, so that the stability after the key clearance adjustment is ensured.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. A key guide and key gap adjusting device used in an electronic music keyboard comprises a keyboard bracket, a key guide and key gap adjusting device, a white key and a black key;

the keyboard support is characterized in that: one end of the keyboard bracket is provided with a rotating shaft, and the other end of the keyboard bracket is provided with an assembling hole, a position fixing groove and an alignment mark;

the key direction and key clearance adjusting device is characterized in that: the device is provided with a mounting hole, a rotating arm, an alignment mark, a fixing groove, a guide mechanism, an adjusting device, a guide surface and a base;

the key is characterized in that: one end of the connecting rod is provided with a mounting hole, the other end of the connecting rod is provided with a key adjusting groove, and the contact surface of the key adjusting groove is arranged.

2. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: the key guiding and key clearance adjusting device comprises two contact surfaces of a guiding mechanism and a key adjusting groove contact surface, one of the two groups of surfaces is a plane, the other group of surfaces is a cylindrical surface or a concentric equal-diameter arc surface, and for the concentric equal-diameter arc surface, the rotating angle a of the rotating adjusting device is required to be smaller than the included angle b between the central line of the guiding mechanism and the connecting line of one end point of the arc surface and the center.

3. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: the swivel arm in the key guide and key gap adjustment device cannot be equal to zero, i.e. the center of the adjustment device and the center of the guide mechanism cannot coincide.

4. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: when the adjusting device is rotated by the tool, the size of the guide mechanism is not changed in the rotating process of the guide mechanism along the center of the adjusting device, and the gaps between the white key adjusting groove and the black key adjusting groove and the guide mechanism are not changed, so that the hand feeling before and after the key gap is adjusted is kept unchanged to the maximum extent.

5. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: after the key gap is adjusted, the fixed groove, the adjusting device and the position fixed groove are filled with plastic grease, so that the purpose of fixing the key guide and the key gap adjusting device is achieved, and the stability of the mechanism is guaranteed.

6. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: the key guiding and key clearance adjusting device is correspondingly arranged in the assembling hole on the keyboard bracket.

7. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: when the key guide and key gap adjustment device is assembled, the alignment marks are aligned with the alignment marks of the keyboard support.

8. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: the guiding mechanism in the key guiding and key clearance adjusting device extends into the white key adjusting groove in the white key, is in contact with the white key surface and guides the moving direction of the key.

9. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: the base of the key guiding and key clearance adjusting device is coaxially matched with the assembling hole, and the base is connected with the assembling hole through a thread or a light hole, but not limited to the connecting mode.

10. A key guiding and key gap adjusting apparatus for use in an electronic musical keyboard as claimed in claim 1, wherein: the adjusting tool is L-shaped but not limited to L-shaped, the cross section can be regular hexagon and other similar structures, the structural size of the outer opening of the adjusting tool is matched with the structural size of the inner opening of the mounting hole and the adjusting device, the adjusting device and the guide mechanism in the key guide and key gap adjusting device form a rotating structure, the guide surface is in tangent fit with the contact surface of the key adjusting groove, a lubricant is arranged between the guide surface and the contact surface of the key adjusting groove, and a soft rubber part can be sleeved outside the guide surface to absorb the noise under special conditions.