CN210805205U

CN210805205U - MIDI keyboard

Info

Publication number: CN210805205U
Application number: CN201921416584.5U
Authority: CN
Inventors: 黄健恒
Original assignee: Midiplus Inc
Current assignee: Midiplus Inc
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-19
Anticipated expiration: 2029-08-28

Abstract

The utility model belongs to the technical field of the electronic musical instrument technique and specifically relates to indicate a MIDI keyboard, including musical instrument seat, sound production circuit and all set up in a plurality of keys and a plurality of sound production switch of musical instrument seat, the middle part of key is equipped with the slider, the musical instrument seat is equipped with the confession the logical groove that the slider stretched into, the inside that leads to the groove is equipped with the elasticity reset block, and the upper end of elasticity reset block is contradicted the slider, the lower extreme of elasticity reset block is contradicted sound production switch, a key warp so that a sound production switch switches on through ordering about the elasticity reset block, and all sound production switches's output is connected with sound production circuit's control end. The utility model discloses a set up the slider that stretches into the logical groove of musical instrument seat at the middle part of key to make the slider pass through the elasticity reset block that the groove was led to in the elasticity of contradicting so that the sound production switch switches on, thereby utilize simple structure to realize pressing down of key discernment and reseing, thereby make the lower and portability of MIDI keyboard's manufacturing cost stronger.

Description

MIDI keyboard

Technical Field

The utility model belongs to the technical field of electronic musical instrument technique and specifically relates to indicate a MIDI keyboard.

Background

MIDI keyboards are portable relative to conventional pianos, and therefore more and more consumers will choose to purchase MIDI keyboards. The keys of the conventional MIDI keyboard generally adopt a structure imitating the keys of a conventional piano, i.e., one end of each key is hinged to a piano base, and the other end of each key is provided with a reset member for resetting the key and an identification member for identifying whether the key is pressed down. However, this structure is complicated and costly, and the keys need to be set to a longer length, which is not conducive to the miniaturization of MIDI keyboards and also to the enhancement of portability of MIDI keyboards.

Disclosure of Invention

The utility model discloses problem to prior art provides a MIDI keyboard, and not only the cost is lower, and does benefit to the portability that improves the MIDI keyboard.

The utility model adopts the following technical scheme: the utility model provides a MIDI keyboard, includes musical instrument seat, sound production circuit and all sets up in a plurality of keys and a plurality of sound production switch of musical instrument seat, and the middle part of key is equipped with the slider, the musical instrument seat is equipped with the confession the logical groove that the slider stretched into, the inside that leads to the groove is equipped with the elasticity reset block, and the upper end of elasticity reset block is contradicted the slider, the lower extreme of elasticity reset block are contradicted sound production switch, a key warp so that a sound production switch switches on through ordering about the elasticity reset block, and all sound production switch's output is connected with sound production circuit's control end respectively.

Preferably, the two sides of the sliding block are respectively provided with a first limiting lug and a second limiting lug, and the groove wall of the through groove is provided with a first limiting block for abutting against the upper end of the first limiting lug and a second limiting block for abutting against the upper end of the second limiting lug.

Preferably, the cross-sectional area of the first limiting bump is gradually reduced from the upper end of the first limiting bump to the lower end of the first limiting bump; the cross-sectional area of the second limiting bump is gradually reduced from the upper end of the second limiting bump to the lower end of the second limiting bump.

Preferably, the key is provided with a first guide column and a second guide column, the first guide column and the second guide column are respectively located at two ends of the key, and the piano base is provided with a first guide groove connected with the first guide column in a sliding mode and a second guide groove connected with the second guide column in a sliding mode.

Preferably, the MIDI keyboard still includes the balancing pole, the balancing pole includes the first body of rod, the second body of rod that is formed by the one end bending type of the first body of rod and the third body of rod that is formed by the other end bending type of the first body of rod, the musical instrument seat is equipped with the spread groove of being connected with the rotation of the first body of rod, and the lower extreme of key is equipped with first bulge and second bulge, and first bulge and second bulge are located the both ends of key respectively, and first bulge is equipped with and supplies the second body of rod to pass through first through-hole, and the second bulge is equipped with the second through-hole that supplies the third body of rod to pass through, all is equipped with the clearance between the pore wall of first through-hole and the second body of rod and between the pore wall of second through-hole and.

Preferably, the first protruding portion includes a first elastic clip leg and a second elastic clip leg, the first through hole is formed between the first elastic clip leg and the second elastic clip leg, the first elastic clip leg protrudes towards the direction close to the second elastic clip leg to form a first limiting block for limiting the second rod body to exit from the first through hole, and the second elastic clip leg protrudes towards the direction close to the first elastic clip leg to form a second limiting block for limiting the second rod body to exit from the first through hole; the second bulge comprises a third elastic clamping foot and a fourth elastic clamping foot, a second through hole is formed between the third elastic clamping foot and the fourth elastic clamping foot, a third limiting block used for limiting the third rod body to withdraw from the second through hole is formed in the direction of the third elastic clamping foot close to the fourth elastic clamping foot, and a fourth limiting block used for limiting the third rod body to withdraw from the second through hole is formed in the direction of the fourth elastic clamping foot close to the third elastic clamping foot in a protruding mode.

Preferably, the sounding circuit comprises a main control chip U2, a tone storage chip U1 and a power amplifier chip U6, and the main control chip U2 extracts tone signals in the tone storage chip U1 according to the conduction conditions of all sounding switches and transmits the tone signals to the power amplifier chip U6.

Preferably, the sound production circuit further comprises a control key arranged on the surface of the base, and the output end of the control key is connected with the input end of the main control chip U2.

Preferably, the control key is a touch key.

The utility model has the advantages that: through the slider that the groove led to the groove that stretches into the musical instrument seat is set up in the middle part at the key to make the slider switch on through the elasticity reset block that the groove was led to the elasticity of contradicting, thereby utilize simple structure to realize pressing down of key discernment and reseing, thereby make the lower just portability of manufacturing cost of MIDI keyboard stronger.

Drawings

Fig. 1 is a three-dimensional structure diagram of the present invention.

Fig. 2 is a sectional view taken along a-a' direction of fig. 1.

Fig. 3 is a three-dimensional structure diagram of the hidden piano keyboard of the present invention.

Fig. 4 is an enlarged schematic view of a portion B in fig. 3.

Fig. 5 is a three-dimensional structure diagram of the balance bar and the key of the present invention.

Fig. 6 is a circuit diagram of the main control chip U2 of the present invention.

Fig. 7 is a circuit diagram of the power amplifier chip U6 of the present invention.

Fig. 8 is a circuit diagram of the chip U1 for storing tone of the present invention.

The reference signs are: 1. a piano base; 11. a through groove; 12. an elastic reset block; 13. a first stopper; 14. a second limiting block; 15. a first guide groove; 16. a second guide groove; 17. connecting grooves; 18. a control key; 2. a sound producing circuit; 4. keys of keys; 41. a slider; 42. a first limit bump; 43. a second limit bump; 44. a first guide post; 45. a second guide post; 6. a sound-producing switch; 7. a balancing pole; 71. a first rod body; 72. a second rod body; 73. a third rod body; 8. a first projecting portion; 81. a first elastic clamping pin; 82. a second elastic clamping pin; 83. a first through hole; 84. a first limiting block; 85. a second limiting block; 9. a second projection; 91. a third elastic clamping leg; 92. a fourth elastic clamping pin; 93. a second through hole; 94. a third limiting block; 95. and a fourth limiting block.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, a MIDI keyboard, including the musical instrument seat 1, sound production circuit 2 and all set up in a plurality of keys 4 and a plurality of sound production switch 6 of musical instrument seat 1, the middle part of key 4 is equipped with slider 41, musical instrument seat 1 is equipped with the confession the logical groove 11 that slider 41 stretched into, the inside that leads to groove 11 is equipped with elasticity reset block 12, and the upper end of elasticity reset block 12 is contradicted slider 41, the lower extreme of elasticity reset block 12 is contradicted sound production switch 6, a key 4 warp so that a sound production switch 6 switches on through ordering about elasticity reset block 12, and all sound production switch 6's output is connected with sound production circuit 2's control end respectively.

After the user pressed key 4, the slider 41 of key 4 contradicts elasticity reset block 12 and makes elasticity reset block 12 warp, and the elasticity reset block 12 of deformation contradicts vocal switch 6 for corresponding vocal switch 6 switches on, and which vocal switch 6 switched on in all vocal switch 6 are discerned to vocal circuit 2, and according to the corresponding sound production of vocal switch 6 signal that switches on. After the user no longer presses the key 4, the elastic return block 12 recovers the deformation and brings the key 4 to return. The utility model discloses a set up the slider 41 that stretches into logical groove 11 of musical instrument seat 1 at the middle part of key 4 to make slider 41 lead to elasticity reset block 12 in groove 11 through the elasticity of contradicting so that sound switch 6 switches on, thereby utilize simple structure to realize pressing down discernment and the reseing of key 4, thereby make the lower and portability of manufacturing cost of MIDI keyboard stronger.

As shown in fig. 2 and 4, a first limiting protrusion 42 and a second limiting protrusion 43 are respectively disposed on two sides of the slider 41, and a first limiting stopper 13 for abutting against an upper end of the first limiting protrusion 42 and a second limiting stopper 14 for abutting against an upper end of the second limiting protrusion 43 are disposed on a wall of the through groove 11, so as to prevent the key 4 from being withdrawn from the through groove 11 and causing the key 4 to fall off.

As shown in fig. 2, the cross-sectional area of the first restriction bump 42 gradually decreases from the upper end of the first restriction bump 42 to the lower end of the first restriction bump 42; the cross-sectional area of the second restriction bump 43 gradually decreases from the upper end of the second restriction bump 43 to the lower end of the second restriction bump 43. The thickness at first spacing lug 42 edge and the thickness at second spacing lug 43 edge are relatively thin, and when the user stimulates key 4 hard, first spacing lug 42 and the spacing lug 43 of second can take place tiny deformation and make first stopper 13 and second stopper 14 no longer block first spacing lug 42 and the spacing lug 43 of second to make the user can make key 4 and lead to groove 11 separation with right the utility model discloses overhaul.

As shown in fig. 2 and 4, the key 4 is provided with a first guide post 44 and a second guide post 45, the first guide post 44 and the second guide post 45 are respectively located at both ends of the key 4, the base 1 is provided with a first guide groove 15 slidably connected to the first guide post 44 and a second guide groove 16 slidably connected to the second guide post 45, and the movement locus of the key 4 is limited by the first guide post 44 and the second guide post 45, so that the key 4 is prevented from being displaced by itself.

As shown in fig. 4 and 5, the MIDI keyboard further comprises a balance bar 7, wherein the balance bar 7 comprises a first bar 71, a second bar 72 formed by bending one end of the first bar 71, and a third bar 73 formed by bending the other end of the first bar 71, the piano base 1 is provided with a connecting groove 17 which is rotationally connected with the first rod body 71, the lower end of the key 4 is provided with a first bulge 8 and a second bulge 9, the first bulge 8 and the second bulge 9 are respectively positioned at two ends of the key 4, the first bulge 8 is provided with a first through hole 83 for the second rod body 72 to pass through, the second bulge 9 is provided with a second through hole 93 for the third rod body 73 to pass through, gaps are respectively arranged between the hole wall of the first through hole 83 and the second rod body 72 and between the hole wall of the second through hole 93 and the third rod body 73, the left and right ends of the key 4 are relatively balanced by the balance bar 7, preventing the key 4 from rocking left and right.

As shown in fig. 5, the first protrusion 8 includes a first elastic latch 81 and a second elastic latch 82, the first through hole 83 is formed between the first elastic latch 81 and the second elastic latch 82, the first elastic latch 81 protrudes toward the second elastic latch 82 to form a first limiting block 84 for limiting the second rod 72 to exit from the first through hole 83, and the second elastic latch 82 protrudes toward the first elastic latch 81 to form a second limiting block 85 for limiting the second rod 72 to exit from the first through hole 83; the second protruding portion 9 includes a third elastic clip 91 and a fourth elastic clip 92, the second through hole 93 is formed between the third elastic clip 91 and the fourth elastic clip 92, a third limiting block 94 for limiting the third rod 73 to exit the second through hole 93 is formed on the third elastic clip 91 in a direction close to the fourth elastic clip 92, and a fourth limiting block 95 for limiting the third rod 73 to exit the second through hole 93 is formed on the fourth elastic clip 92 in a protruding manner in a direction close to the third elastic clip 91. In the use state, the second rod 72 cannot exit the first through hole 83 and the second rod 72 cannot exit the second through hole 93. When a user needs to detach the key 4, the second rod 72 is pulled to drive the first elastic clamping foot 81 and the second elastic clamping foot 82 to be away from each other and the third rod 73 is driven to drive the third elastic clamping foot 91 and the fourth elastic clamping foot 92 to be away from each other by pulling the key 4 with force, so that the second rod 72 is separated from the first through hole 83 and the third rod 73 is separated from the second through hole 93.

As shown in fig. 6 to 8, the sound circuit 2 includes a main control chip U2, a tone storage chip U1, and a power amplifier chip U6, and the main control chip U2 extracts tone signals in the tone storage chip U1 according to the on-state of all the sound switches 6 and transmits the tone signals to the power amplifier chip U6, so as to realize the function of generating different sounds by pressing different keys 4.

As shown in fig. 1, the sound generating circuit 2 further includes a control key 18 disposed on the surface of the base 1, and an output end of the control key 18 is connected to an input end of the main control chip U2. The user can also adjust the volume and tone isoparametric of piano through control button 18, thereby improves the utility model discloses more functions have.

Specifically, the control key 18 is a touch key, which is not easy to damage and has a longer service life.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims

1. A MIDI keyboard, characterized by: including musical instrument seat (1), sound production circuit (2) and all set up in a plurality of keys (4) and a plurality of sound production switch (6) of musical instrument seat (1), the middle part of key (4) is equipped with slider (41), musical instrument seat (1) is equipped with the confession logical groove (11) that slider (41) stretched into, the inside that leads to groove (11) is equipped with elasticity reset block (12), and the upper end of elasticity reset block (12) is contradicted slider (41), the lower extreme of elasticity reset block (12) is contradicted sound production switch (6), a key (4) warp so that a sound production switch (6) switch on through ordering about elasticity reset block (12), and the output of all sound production switches (6) is connected with the control end of sound production circuit (2) respectively.

2. A MIDI keyboard as claimed in claim 1, wherein: the both sides of slider (41) are equipped with first spacing lug (42) and second spacing lug (43) respectively, the cell wall that leads to groove (11) is equipped with and is used for conflicting first stopper (13) of the upper end of first spacing lug (42) and is used for conflicting second stopper (14) of the upper end of second spacing lug (43).

3. A MIDI keyboard as claimed in claim 2, wherein: the cross-sectional area of the first limiting bump (42) is gradually reduced from the upper end of the first limiting bump (42) to the lower end of the first limiting bump (42); the cross-sectional area of the second limit bump (43) is gradually reduced from the upper end of the second limit bump (43) to the lower end of the second limit bump (43).

4. A MIDI keyboard as claimed in claim 1, wherein: the key (4) is provided with a first guide post (44) and a second guide post (45), the first guide post (44) and the second guide post (45) are respectively positioned at two ends of the key (4), and the piano base (1) is provided with a first guide groove (15) connected with the first guide post (44) in a sliding mode and a second guide groove (16) connected with the second guide post (45) in a sliding mode.

5. A MIDI keyboard as claimed in claim 1, wherein: the MIDI keyboard further comprises a balance rod (7), the balance rod (7) comprises a first rod body (71), a second rod body (72) formed by bending one end of the first rod body (71) and a third rod body (73) formed by bending the other end of the first rod body (71), the piano seat (1) is equipped with and rotates spread groove (17) of being connected with the first body of rod (71), the lower extreme of key (4) is equipped with first bulge (8) and second bulge (9), first bulge (8) and second bulge (9) are located the both ends of key (4) respectively, first bulge (8) are equipped with and supply the second body of rod (72) to pass through first through-hole (83), second bulge (9) are equipped with second through-hole (93) that supply third body of rod (73) to pass through, all be equipped with the clearance between the pore wall of first through-hole (83) and the second body of rod (72) and between the pore wall of second through-hole (93) and the third body of rod (73).

6. A MIDI keyboard according to claim 5, wherein: the first protruding portion (8) comprises a first elastic clamping pin (81) and a second elastic clamping pin (82), a first through hole (83) is formed between the first elastic clamping pin (81) and the second elastic clamping pin (82), a first limiting block (84) used for limiting the second rod body (72) to exit from the first through hole (83) is formed in the first elastic clamping pin (81) in a protruding mode towards the direction close to the second elastic clamping pin (82), and a second limiting block (85) used for limiting the second rod body (72) to exit from the first through hole (83) is formed in the second elastic clamping pin (82) in a protruding mode towards the direction close to the first elastic clamping pin (81);

the second protruding portion (9) comprises a third elastic clamping pin (91) and a fourth elastic clamping pin (92), a second through hole (93) is formed between the third elastic clamping pin (91) and the fourth elastic clamping pin (92), a third limiting block (94) used for limiting the third rod body (73) to exit from the second through hole (93) is formed in the direction of the third elastic clamping pin (91) close to the fourth elastic clamping pin (92), and a fourth limiting block (95) used for limiting the third rod body (73) to exit from the second through hole (93) is formed in the direction of the fourth elastic clamping pin (92) close to the third elastic clamping pin (91) in a protruding mode.

7. A MIDI keyboard as claimed in claim 1, wherein: the sounding circuit (2) comprises a main control chip U2, a tone storage chip U1 and a power amplifier chip U6, wherein the main control chip U2 extracts tone signals in the tone storage chip U1 according to the conduction condition of all sounding switches (6) and transmits the tone signals to the power amplifier chip U6.

8. A MIDI keyboard as claimed in claim 7, wherein: the sounding circuit (2) further comprises a control key (18) arranged on the surface of the piano base (1), and the output end of the control key (18) is connected with the input end of the main control chip U2.

9. A MIDI keyboard as claimed in claim 8, wherein: the control key (18) is a touch key.