CN215376906U - Electronic accordion bass button type keyboard - Google Patents

Abstract

The utility model discloses an electronic accordion bass button type keyboard, which comprises a plurality of bass buttons which are regularly arranged into a plurality of rows multiplied by a plurality of columns, wherein the bass buttons are arranged in a closed space formed by a bass panel, a supporting and fixing frame and a circuit board and are exposed, wherein: the base is provided with a base plate, a base plate and a positioning layer plate, wherein the base plate is arranged on the base plate, the base plate is provided with a plurality of through holes; under the pressing action of the bass button pressed by a player, the conductive silica gel button moves downwards to be in contact with the circuit board to generate a conducting electric signal. The utility model has the advantages of simple structure, stable and reliable operation, high sound response speed, light weight and low cost, and is suitable for popularization.

Description

Electronic accordion bass button type keyboard

Technical Field

The utility model relates to a bass button type keyboard of an electronic accordion, in particular to a bass button type keyboard for the electronic accordion.

Background

With the popularization of the accordion and the rapid development of electronic technology, the electronic accordion gradually appears in the visual field of people, but the existing mature electronic accordion products are manufactured abroad, have high price, complex structure and complex operation, are not suitable for common accordion learners and enthusiasts, and have defects in the aspects of pressing sensitivity, playing feeling and the like of bass machine keys of the foreign electronic accordion.

At present, the electronic accordion is still in a blank state in China, but some research results appear. For example, the chinese utility model patent No. 201721366213.1 entitled "an electronic accordion bass key button structure" discloses a bass key button structure as shown in fig. 3, which includes a key button 90, the key button 90 is installed in an enclosed space formed by a key plate 81, a supporting and fixing frame 82 and a circuit board 83 and exposed, wherein: the key button 90 includes a key cap 91, the top of the key cap 91 extends out from a key hole of the key board 81, the bottom of the key cap 91 is connected with the top of the sleeve 92, a top rod 94 is installed at the bottom of the sleeve 92, a spring 93 is arranged between the part of the top rod 94 located in the sleeve 92 and the inner wall of the top of the key cap 91, the top rod 94 can extend out and retract relative to the sleeve 92 under the elastic force action of the spring 93, the bottom of the top rod 94 is connected with the conductive silica gel button 85, the conductive silica gel button 85 is installed on the circuit board 83 through the fixing plate 84, and the conductive silica gel button 85 moves downwards under the pressing action of the key button 90 pressed by a player to contact with the circuit board 83 to generate a conduction electrical signal. The existing bass key button structure has stable and reliable pressing effect and good touch key feeling, reduces the weight of the accordion, reduces the load for accordion performers, and makes the popularization of the accordion to the younger children possible. However, it can be found from actual production, manufacture and use that when 120 keys are arranged for the accordion, 120 keys 90 consisting of the key cap 91, the spring 93, the sleeve 92 and the ejector rod 94 need to be arranged on the bass machine, and it can be seen that the structure is still complex, a plurality of friction surfaces exist among all parts, which causes deviation of pressing-down weight sense, i.e. poor hand feeling, and the complex structure causes low manufacturing efficiency, low yield, and high material cost and assembly labor cost (about 450 yuan), which still makes the accordion product expensive and not beneficial to popularization, and in addition, the complex structure makes the weight of the bass machine about 830 grams, which makes the accordion heavier and does not reduce the load for the accordion performer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electronic accordion bass button type keyboard which is simple in structure, stable and reliable in operation, high in sounding response speed, light in weight, low in cost and suitable for popularization and promotion.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an electronic accordion bass button keyboard, characterized in that: it includes a plurality of this button of regular arrangement into a plurality of lines of a plurality of columns, and this button is installed in the confined space that is formed by this panel, support mount and circuit board and is exposed, wherein: the base is provided with a base plate, a base plate and a positioning layer plate, wherein the base plate is arranged on the base plate, the base plate is provided with a plurality of through holes; under the pressing action of the bass button pressed by a player, the conductive silica gel button moves downwards to be in contact with the circuit board to generate a conducting electric signal.

The utility model has the advantages that:

compared with the existing Bass machine key button structure, the Bass button of the Bass button type keyboard greatly simplifies the structure, the conducting silica gel button is directly touched and pressed by the Bass button to realize conduction, the elasticity is completely from the conducting silica gel button, the key touch sensitivity and the comfort feeling of players are greatly improved, the manufacturing efficiency and the yield are greatly improved, the cost is greatly reduced, and the weight of the whole piano is greatly reduced.

Drawings

Fig. 1 is a schematic structural diagram of an electronic accordion bass button type keyboard of the present invention.

Fig. 2 is an enlarged schematic view of a-a of fig. 1 in section (cable not shown).

Fig. 3 is a schematic diagram of a prior art bass keybutton configuration.

Detailed Description

Referring to fig. 1 and 2, the electronic accordion-bass button type keyboard of the present invention includes a plurality of bass buttons 30 regularly arranged in a plurality of rows × a plurality of columns, the bass buttons 30 being installed in and exposed from an enclosed space such as a rectangular body formed by a bass panel 10, a support holder 60, and a circuit board 20, the bass panel 10 having an inverted U shape as a top plate and two opposite side plates, the circuit board 20 as a bottom plate, and a portion of the support holder 60 as the other two opposite side plates to form a housing accommodating the bass buttons 30, wherein: the bass button 30 can penetrate through the button hole 11 of the bass panel 10 in a way of moving up and down, the top of the bass button 30 extends out of the bass panel 10 from the button hole 11, the bottom of the bass button 30 in the bass panel 10 is placed on the top of a conductive silicone button 50, the bass button 30 is in contact with but not fixedly connected with the conductive silicone button 50, and the conductive silicone button 50 is pressed on the circuit board 20 through the positioning layer plate 40 to keep a relative position with the circuit board 20 fixed; under the depression of the bass button 30 by the player, the conductive silicone button 50 moves down to contact the circuit board 20 to generate a conduction electric signal.

As shown in fig. 2, the bass button 30 includes a solid or hollow button cap 31, the top of the button cap 31 extends out of the button hole 11, a ring of cap edge 311 is disposed at the bottom of the button cap 31, the cap edge 311 is limited by the bass panel 10 and is always located in the closed space, a felt pad (not shown) is disposed on a surface of the cap edge 311 of the button cap 31 facing the bass panel 10, a bottom surface of the button cap 31 is in contact with a top surface of the conductive silicone button 50 but is not fixed by bonding or the like, and the bass button 30 can make an extending and retracting movement relative to the button hole 11 of the bass panel 10 under a guiding action generated by the button hole 11 and a resilient force of the conductive silicone button 50.

According to the utility model, the design of the felt mat can effectively reduce mechanical collision sound in the playing process, greatly reduce noise and improve playing touch feeling.

As shown in fig. 2, the conductive silicone button 50 includes an elastic body 51 in the shape of an inverted bowl, a circle of convex edge 511 is disposed outwards at the bottom of the elastic body 51, a silicone button slot connecting seat 52 is disposed upwards at the outer top of the elastic body 51, a convex block 54 is disposed downwards at the inner top of the elastic body 51, a conductive silicone rubber sheet 53 is disposed on the bottom surface of the convex block 54, the conductive silicone rubber sheet 53 is vertically opposite to a corresponding contact on the circuit board 20, wherein: the conductive silicone button 50 moves downward by the depression of the bass button 30 to make the conductive silicone rubber sheet 53 contact with the corresponding contact on the circuit board 20; the lower part of the elastic body 51 of the conductive silicone button 50 is inserted into the positioning hole 41 of the positioning layer plate 40, the convex edge 511 of the elastic body 51 is buckled at the bottom of the positioning hole 41 and faces to the outside to form a circle of annular groove 410, the upper part (or the rest part) of the elastic body 51 of the conductive silicone button 50 and the silicone button groove connecting seat 52 extend out of the positioning hole 41, and the positioning layer plate 40 and the circuit board 20 are fixed through bolts.

Furthermore, as shown in fig. 2, the bottom surface of the button cap 31 is provided with an anti-moving block 32 protruding downward, and the anti-moving block 32 is disposed in the groove of the silicone button groove connecting seat 52. The movement prevention block 32 functions to prevent the bass button 30 from being excessively displaced with respect to the conductive silicone button 50 during the up-and-down movement, thereby ensuring that the respective movements of the bass button 30 and the conductive silicone button 50 and the movement therebetween can be well maintained in the up-and-down direction.

For the conductive silicone button 50, the cross-sectional area of the bottom of the cylindrical silicone button groove connecting seat 52 should be slightly smaller than the top surface area of the elastic body 51. In addition, the cross-sectional area of the solid protrusion 54 should be smaller than the cross-sectional area of the through hole of the silicone button groove connection seat 52, so that the protrusion 54 can be retracted into the silicone button groove connection seat 52 by designing the portion of the top surface of the elastic body 51 between the silicone button groove connection seat 52 and the protrusion 54 to have a suitable thickness (thinness). In practical design, the thickness of the side wall and the top surface of the elastic body 51 between the silicone button and the connecting seat 52 and the protrusion 54 is designed to be concave and curved.

In the present invention, the conductive silicone button 50 is deformed after being stressed to contact the corresponding contact point on the circuit board 20, so as to conduct the corresponding circuit on the circuit board 20, so that the circuit board 20 performs the function of transmitting the sound information to the electronic sound generating device, and the conductive silicone button 50 is pressed to immediately touch and conduct the circuit board 20, and can be continuously pressed, so as to fully satisfy the playing hand feeling requirement, and the two pressing processes are distinct in level and respectively meet the playing force comfort requirement. Specifically, the downward movement of the conductive silicone button 50 by the depression of the bass button 30 is divided into two phases:

in the first stage, at the beginning of playing, a player presses down the button cap 31 with about 65 grams of pressure (the mass of the button cap is less than 1 gram, and the action of the button cap in the lower pressure is ignored), the silicone button groove connecting seat 52 and the projection 54 move downwards together, the side wall of the elastic body 51 is recessed inwards, the conductive silicone rubber sheet 53 on the projection 54 is contacted with the contact of the circuit board 20, the compression generated on the conductive silicone button 50 in this stage is realized by the elasticity of the elastic body 51, and the purpose that the player can realize the connection of the circuit board 20 in the shortest possible time by using smaller pressing force is achieved in this stage;

in the second stage, the player continues to press the button cap 31 downwards due to inertia, the silicone button groove connecting seat 52 continues to move downwards, the bump 54 is not moved at this time, the top of the elastic body 51 begins to be sunken downwards, the side wall continues to be sunken inwards, so that the bump 54 is retracted into the silicone button groove connecting seat 52, the compression on the conductive silicone button 50 in this stage is realized by the elasticity of the elastic body 51 and the retraction of the bump 54 into the silicone button groove connecting seat 52, the player linearly increases the pressing force of the button cap 31 downwards from about 110 g to about 250 g at this time, and the compression displacement in this stage brings clear, comfortable and free playing hand feeling to the player.

In practical design, it is preferable that the pressing stroke of the silicone button slot connecting seat 52 and the protrusion 54 for generating the conduction electrical signal in the first stage is 0.5mm to 1.0mm, and the pressing stroke of the silicone button slot connecting seat 52 in the second stage is 2mm to 5 mm.

After the first and second stages, the conductive silicone button 50 generates a resilient force by its own elastic deformation characteristic, so that it and the bass button 30 are reset.

Based on the above design of the conductive silicone button 50, the bass button 30 has a clear touch, and is slightly kneaded compared with the traditional accordion, so that the playing feeling is good.

As shown in fig. 1 and 2, a fitting hole 120 is provided in a fitting portion 12 extending downward from one side of the bass panel 10, and the fitting portion 12 is used to integrally mount the bass button type keyboard of the present invention on an electronic accordion.

In the present invention, the bass panel 10 functions as: first, the circuit board 20 and other components are integrated into a single body, the bass button keyboard. Second, the bass button type keypad of the present invention is fixed to the electronic accordion by a screw passing through the fitting hole 120. Thirdly, besides being used for arranging and positioning the bass buttons 30, the bass buttons 30 are provided with a guiding function of pressing to and fro, the thickness of the bass panel 10 is reasonably designed according to the height of the button caps 31, and the gap between the cylindrical surfaces of the bass buttons 30 and the hole walls of the button holes 11 is preferably kept at 0.3mm, so that the button caps 31 are ensured not to topple and clamp while the guiding function is provided for the button caps 31.

In practical design, all the bass buttons 30 should be regularly arranged in a form of a plurality of rows × a plurality of columns according to the requirements of the electronic accordion, the number of the bass buttons of the electronic accordion with different specifications and models is different, and the bass panel 10 is designed reasonably according to the number of the bass buttons. For example, 120 button holes 11 are provided on the bass panel 10 of an electronic accordion in which 120 bass buttons are arranged, but it is also possible to arrange a children's organ of 96, 80, 60, 48, … … up to 8 bass buttons, and so on.

In actual design, the top of the bass button 30 is exposed from the button hole 11 by 103 mm to 6mm of the bass panel.

In practical use, the circuit board 20 is connected to the sound source board of the electronic sound generating apparatus via the cable 70, and the conduction of the circuit board 20 is used to trigger the electronic sound generating apparatus to generate correct sound.

The configuration of the circuit board 20 in the present invention may be various, and is not limited thereto, which is well known in the art and thus will not be described in detail herein.

For example, the circuit board 20 is a sound collecting board, and a matrix circuit is used to collect input sound information by the contact of the conductive silicone rubber sheet 53 of the conductive silicone button 50.

When a player presses a certain button cap 31 during playing, the button cap 31 moves downward and abuts against the conductive silicone button 50, a downward force is transmitted to the conductive silicone button 50, and then the conductive silicone button 50 also moves downward. When the conductive silicone rubber sheet 53 on the conductive silicone button 50 contacts with the corresponding contact on the circuit board 20, the matrix circuit on the circuit board 20 is triggered to generate a conducting electrical signal, so as to control the electronic sound generating device of the electronic accordion to generate the sound corresponding to the bass button 30.

When the player releases the button cap 31, under the effect of the resilient return of the conductive silicone button 50, the button cap 31 moves upward until the cap edge 311 of the button cap 31 is stopped by the bass panel 10, at which time the conductive silicone rubber sheet 53 of the conductive silicone button 50 separates from the corresponding contact on the circuit board 20, and then the electronic sound generating device of the electronic accordion stops generating the sound corresponding to the button cap 31.

The utility model has the advantages that:

compared with the existing Bass machine key button structure, the Bass button of the Bass button type keyboard greatly simplifies the structure, removes a spring, a sleeve and an ejector rod of the existing Bass machine key button structure, replaces the spring with the self elastic resetting capability of the conductive silica gel button, replaces the sleeve with the guiding function of a button hole of the Bass panel, simplifies the structure, simultaneously, ensures that the pressing function generated by the Bass button is stable and reliable, and compared with the existing Bass machine key button structure, brings the following advantages due to the simplified structure:

1. the stroke from the button cap to the contact of the conductive silica gel button to the circuit board is greatly shortened, so that the response speed of pressing the sounding by the finger is increased, and the touch key sensitivity and the comfort feeling of a player are greatly improved.

2. The simplification of structure makes the friction surface between each spare part significantly reduce, has eliminated the deviation that the light heavy sense of pushing down appears, and the player is more clear to the sense of touch of this button, compares with traditional accordion, and the sense of touch is more lightly rubbed a little, and the impression of playing is better.

3. The simplified structure enables the production efficiency to be improved, the yield is improved, and by taking 120 Bass buttons arranged on the accordion as an example, the assembly material cost and the assembly labor cost can be greatly reduced to about 160 yuan, so that the price of the accordion product is reduced, and the popular demand is met.

4. Taking 120 bass buttons arranged on an accordion as an example, compared with the existing bass machine button structure, the simplified structure enables the weight of the bass machine to be reduced by 550 grams and about 280 grams, which is a great progress for carrying a clasping type musical instrument, the weight of the accordion is really reduced, the load is really reduced for an accordion performer, and the popularization of the accordion to the young children is realized.

The above description is of the preferred embodiment of the present invention and the technical principles applied thereto, and it will be apparent to those skilled in the art that any changes and modifications based on the equivalent changes and simple substitutions of the technical solutions of the present invention are within the protection scope of the present invention without departing from the spirit and scope of the present invention.

Claims (6)

1. An electronic accordion bass button keyboard, characterized in that: it includes a plurality of this button of regular arrangement into a plurality of lines of a plurality of columns, and this button is installed in the confined space that is formed by this panel, support mount and circuit board and is exposed, wherein: the base is provided with a base plate, a base plate and a positioning layer plate, wherein the base plate is arranged on the base plate, the base plate is provided with a plurality of through holes; under the pressing action of the bass button pressed by a player, the conductive silica gel button moves downwards to be in contact with the circuit board to generate a conducting electric signal.

2. The electronic accordion bass button keyboard of claim 1, wherein:

the bass button includes solid or hollow button cap, and the top of button cap is followed stretch out in the button hole, and the bottom of button cap is equipped with the round cap limit, and the cap limit receives in the spacing and be in the enclosure space all the time of bass panel, the cap limit orientation of button cap be equipped with the felt pad on the one side of bass panel, the bottom surface of button cap with the top surface contact of conductive silica gel button is but unsettled, the bass button is in the guide effect that the button hole produced with can for under the elasticity of conductive silica gel button the button hole is done and is stretched out and the indentation motion.

3. The electronic accordion bass button keyboard of claim 2, wherein:

conductive silica gel button is including being the elasticity main part of back-off bowl form, and elasticity main part bottom is equipped with the round chimb outwards, and the outer top of elasticity main part is equipped with silica gel button groove connection seat up, and the interior top of elasticity main part is equipped with the lug down, is equipped with conductive silicone rubber piece on the bottom surface of lug, conductive silicone rubber piece with corresponding contact on the circuit board is relative from top to bottom, wherein: the conductive silicone button moves downwards under the pressing action of the Bass button so as to enable the conductive silicone rubber sheet to be in contact with the corresponding contact on the circuit board; the lower part of the elastic main body of the conductive silica gel button is inserted into the positioning hole of the positioning layer plate, the convex edge of the elastic main body is buckled in a circle of annular groove arranged at the bottom of the positioning hole outwards, the upper part of the elastic main body of the conductive silica gel button and the silica gel button groove connecting seat stretch out of the positioning hole, and the positioning layer plate is fixed on the circuit board through bolts.

4. The electronic accordion bass button keyboard of claim 3, wherein:

the bottom surface of the button cap is provided with an anti-moving block in a downward convex mode, and the anti-moving block is arranged in a groove of the silica gel button groove connecting seat.

5. An electronic accordion bass button keyboard as claimed in any one of claims 1 to 4, wherein:

the bass panel is provided with an assembly hole on an assembly part extending downwards from one side of the bass panel.

6. An electronic accordion bass button keyboard as claimed in any one of claims 1 to 4, wherein:

the top of the bass button is exposed out of the bass panel by 3-6 mm from the button hole.

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