CN109410901B

CN109410901B - Novel digital piano keyboard

Info

Publication number: CN109410901B
Application number: CN201811184892.XA
Authority: CN
Inventors: 陈天浩; 张念念
Original assignee: ZHEJIANG YOUYI ELECTRONIC CO Ltd
Current assignee: ZHEJIANG YOUYI ELECTRONIC CO Ltd
Priority date: 2018-10-11
Filing date: 2018-10-11
Publication date: 2024-01-23
Anticipated expiration: 2038-10-11
Also published as: CN109410901A

Abstract

The invention discloses a novel digital piano keyboard which has good hand feeling and large design space. The technical scheme adopted comprises the following steps: the key frame, white key, the black key of a set of alternate arrangement are installed to the key frame upper end, PCB board, a set of weight are installed to the key frame lower extreme, white key, black key press the post through the bottom and press the cooperation with the stationary contact on the PCB board, weight provides counter weight for white key, black key, its characterized in that: the weight is rotatably arranged on the key frame, a first curved surface is arranged at the top of the weight, a second curved surface matched with the first curved surface is arranged at the bottoms of the white key and the black key, and when the white key and the black key are played, the first curved surface and the second curved surface are in surface contact.

Description

Novel digital piano keyboard

Technical Field

The invention relates to a digital piano keyboard.

Background

With the continuous development of digital pianos, new technologies are continuously emerging and applied. The market also puts higher demands on the digital piano keyboard. Not only is a better "feel" required to be closer to a conventional piano, but also lower costs are required. In addition, a new digital piano keyboard is required to be able to match a new audio processing chip, thereby exerting the advantages of the new technology. As shown in the Chinese patent with the bulletin number of CN 102831883B, the scheme mainly adopts a modularized key frame, so that the keyboard is easier to produce and has strong expansibility. But also has the disadvantages that: 1. because the top of the heavy hammer is connected with the white key and the black key in a shaft way, the hand feeling is single, no design space exists, and different hand feeling can not be realized according to the needs of customers; 2. the PCB adopts a double-contact structure, and the phenomenon of sound interruption can occur in the rapid continuous playing process.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the novel digital piano keyboard which has good hand feeling and large design space.

In order to solve the problems, the technical scheme adopted by the invention comprises the following steps: the key frame, white key, the black key of a set of alternate arrangement are installed to the key frame upper end, PCB board, a set of weight are installed to the key frame lower extreme, white key, black key press the post through the bottom and press the cooperation with the stationary contact on the PCB board, weight provides counter weight for white key, black key, its characterized in that: the weight is rotatably arranged on the key frame, a first curved surface is arranged at the top of the weight, a second curved surface matched with the first curved surface is arranged at the bottoms of the white key and the black key, and when the white key and the black key are played, the first curved surface and the second curved surface are in surface contact.

The novel digital piano keyboard is characterized in that: the weight mainly comprises a weight balance rod, a mounting frame and a rubber head, wherein the weight balance rod is arranged on the mounting frame, the rubber head is arranged at the top of the weight balance rod, a first curved surface is arranged on the rubber head, and the weight is rotatably mounted on the key frame through the mounting frame.

The novel digital piano keyboard is characterized in that: the key frame middle part is equipped with a set of interval arrangement's first erection column, wear to be equipped with the axle on the first erection column, the mounting bracket of weight erect on the first erection column to through first recess with axle normal running fit.

The novel digital piano keyboard is characterized in that: the top of the key frame is provided with a group of second mounting columns which are arranged at intervals, shafts are arranged on the second mounting columns in a penetrating mode, and the tops of the white keys and the black keys are erected on the second mounting columns and are in rotary fit with the shafts through second grooves.

The novel digital piano keyboard is characterized in that: the bottoms of the white key and the black key are provided with a pair of hooks which are oppositely arranged, and the hooks are hung on the top of the counterweight rod.

The novel digital piano keyboard is characterized in that: the fixed contact on the PCB is composed of a front fixed contact, a middle fixed contact and a rear fixed contact, a rubber cushion is arranged between the pressing column and the fixed contact of the PCB, a front movable contact, a middle movable contact and a rear movable contact with increasing heights are arranged on the rubber cushion, and the front movable contact, the middle movable contact and the rear movable contact are respectively in contact fit with the fixed contact, the middle fixed contact and the rear fixed contact.

The novel digital piano keyboard is characterized in that: a foam cushion is arranged between the contact surfaces of the counterweight rod and the key frame.

The novel digital piano keyboard is characterized in that: and felts are arranged between the contact surfaces of the white keys, the black keys and the key frame.

The novel digital piano keyboard is characterized in that: the key frame is composed of a group of key frame modules, the key frame modules are connected through a metal connecting plate at the bottom), and the adjacent key frame modules are also connected in a matched manner through dovetail grooves and dovetail blocks.

The novel digital piano keyboard has the following advantages:

1. the black key, the white key and the heavy hammer are in contact operation through the curved surfaces, different hand feeling can be produced through designing different curved surfaces, so that the diversity of the hand feeling design is greatly improved, different customer requirements are met, and the hand feeling is closer to that of a traditional piano keyboard through the operation mode.

2. Through three-contact electric signal feedback, the sound is smoother continuously in the rapid continuous playing process, and the phenomenon of sound interruption can not occur.

The invention is further described below with reference to the drawings.

Drawings

FIG. 1 is a schematic diagram of a novel digital piano keyboard of the present invention;

FIG. 2 is a cross-sectional view of a novel digital piano keyboard of the present invention;

FIG. 3 is a schematic diagram showing the assembly of the key and the weight according to the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2;

FIG. 5 is a schematic structural view of a key frame module of the present invention;

FIG. 6 is a schematic diagram of the structure of a white key according to the present invention;

fig. 7 is a schematic view of the structure of the black key of the present invention;

FIG. 8 is a schematic diagram of the weight of the present invention;

fig. 9 is a partial enlarged view of fig. 1.

Detailed Description

Referring to fig. 1 to 9, the novel digital piano keyboard of the present invention comprises a key frame 1, wherein the key frame 1 is formed by connecting a plurality of key frame modules 19, and the key frame modules 19 are connected through a metal connecting plate 20 at the bottom. In order to make the connection between the key frame modules 19 more firm and smooth, the adjacent key frame modules 19 are connected in a matched manner through the dovetail grooves 21 and the dovetail blocks 22 (i.e. the dovetail blocks of the former key frame module are inserted into the dovetail grooves of the latter key frame module). The key frame 1 upper end is installed a set of white key 2, black key 3 that set up in turn (standard 88 key, also can 61 key, 49 key etc.), PCB board 4, a set of weight 5 are installed to key frame 1 lower extreme, white key 2, black key 3 press the cooperation with the stationary contact 7 on the PCB board 4 through the pressing post 6 of bottom, weight 5 provides the counter weight (i.e. the gravity of pushing down and reset) for white key 2, black key 3, weight 5 upper end rotatable install in on the key frame 1, just weight 5 top be equipped with first curved surface 8, white key 2, black key 3 bottom be equipped with first curved surface 8 matched second curved surface 9, when playing white key 2, black key 3, carry out the face contact between first curved surface 8, the second curved surface 9, also exert gravity through this first curved surface to white key 2, black key 3.

Further, the weight 5 mainly comprises a weight balancing rod 51, a mounting frame 52 and a rubber head 53, the upper end of the weight balancing rod 51 is arranged on the mounting frame 52, the rubber head 53 is arranged at the top of the weight balancing rod 51, the rubber head 53 is provided with a first curved surface 8, and the weight 5 is rotatably mounted on the key frame 1 through the mounting frame 52. Through the design of mounting bracket to the quick installation of weight and mounting bracket is convenient. Through the design of rubber head, the design shaping of the first curved surface of being convenient for and convenient the change, rubber head has certain elasticity simultaneously, and when the operation, its "feel" is better.

Further, a set of first mounting columns 10 are arranged in the middle of the key frame 1 at intervals, shafts 11 are arranged on the first mounting columns 10 in a penetrating manner, and the mounting frame 52 of the heavy hammer 5 is erected on the first mounting columns 10 and is in running fit with the shafts 11 through the first grooves 12. Through the structure, the heavy hammer can be replaced very conveniently, and different hand feeling can be realized conveniently according to the needs of customers.

Further, a set of second mounting columns 13 are arranged at the top of the key frame 1 at intervals, shafts 11 are arranged on the second mounting columns 13 in a penetrating mode, the tops of the white keys 2 and the black keys 3 are arranged on the second mounting columns 13 in a erected mode, and the white keys and the black keys are in running fit with the shafts 11 through the second grooves 14. The white key and the black key are convenient to assemble and disassemble, so that the heavy hammer is further convenient to assemble and disassemble.

Further, a pair of hooks 25 are disposed at the bottoms of the white key 2 and the black key 3, and are hung on the top of the weight balancing rod 51 through the hooks 25, so as to play a role in positioning the weight, so as to prevent the weight from deviating from the position.

Further, the stationary contact 7 on the PCB 4 is composed of a stationary contact 71, a middle stationary contact 72 and a rear stationary contact 73 which are arranged at intervals, a rubber pad 15 is arranged between the pressing post 6 and the stationary contact 7 of the PCB 4, a front movable contact 16, a middle movable contact 17 and a rear movable contact 18 with increasing heights are arranged on the rubber pad 15, the front movable contact 16, the middle movable contact 17 and the rear movable contact 18 are respectively in contact fit with the stationary contact 71, the middle stationary contact 72 and the rear stationary contact 73, and the rubber pad 15 provides elastic force for the front movable contact 16, the middle movable contact 17 and the rear movable contact 18 so as to enable the front movable contact 16, the middle movable contact 17 and the rear movable contact 18 to reset. By means of the design of three conductive adhesive contacts with different heights, the three contacts can trigger and conduct corresponding circuits when keys are pressed to different depths. Taking the white key as an example, the first point (i.e., front stationary contact 71) is turned on approximately 5mm when the key is pressed, the second point (i.e., middle stationary contact 72) is approximately 7mm, and the third point (i.e., rear stationary contact 73) is approximately 9 mm. The total stroke of the white keys of a typical keyboard is about 10.8mm. After the key is pushed to the bottom, the hand is released, and the three contacts are released sequentially from the third contact. When the first point is triggered, the circuit is temporarily kept on; after the second point is triggered, the CPU starts timing, and after the third point is triggered, a time difference is obtained, say, tens of milliseconds. At this time, a strength signal is given, and the CPU processes the intensity of the sound by this signal. Then, after the key touches the bottom, the rebound stroke is started: firstly, the third contact is released, then when the key is lifted to the second contact, if the key is placed on a keyboard with two traditional contacts, the sound is cut off, otherwise, the sound is not cut off as long as the key is not lifted to the position for cutting off the first contact, the interval is approximately 5-7mm, and the key is bounced again at the moment, and a musical sound is generated. Namely the effect of quick connection.

Further, a foam cushion 23 is disposed between the contact surfaces of the weight bar 51 and the key frame 1, for absorbing the impact sound between the weight bar and the key frame. And felt 24 is arranged between the contact surfaces of the white keys 2, the black keys 3 and the key frame 1 and is used for absorbing impact sound between the buttons and the key frame. Finally, the effect of noise reduction is achieved.

Although the present invention has been described with respect to preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the invention, and the invention is not limited to the specific embodiments described above, but is intended to cover all modifications, equivalents and alternatives falling within the scope of the invention.

Claims

1. The utility model provides a novel digital piano keyboard, includes keyframe (1), white key (2), black key (3) that a set of set up in turn are installed to keyframe (1) upper end, PCB board (4), a set of weight (5) are installed to keyframe (1) lower extreme, white key (2), black key (3) press the post (6) through the bottom with stationary contact (7) press fit on PCB board (4), weight (5) provide counter weight for white key (2), black key (3), its characterized in that: the heavy hammer (5) is rotatably arranged on the key frame (1), a first curved surface (8) is arranged at the top of the heavy hammer, a second curved surface (9) matched with the first curved surface (8) is arranged at the bottoms of the white key (2) and the black key (3), and when the white key (2) and the black key (3) are played, the first curved surface (8) and the second curved surface (9) are in surface contact;

the top of the key frame (1) is provided with a group of second mounting columns (13) which are arranged at intervals, a shaft (11) is arranged on the second mounting columns (13) in a penetrating mode, and the tops of the white keys (2) and the black keys (3) are arranged on the second mounting columns (13) in a erecting mode and are in rotary fit with the shaft (11) through second grooves (14); the middle part of the key frame (1) is provided with a group of first mounting columns (10) which are arranged at intervals, a shaft (11) is arranged on the first mounting columns (10) in a penetrating manner, and a mounting frame (52) of the heavy hammer (5) is erected on the first mounting columns (10) and is in running fit with the shaft (11) through a first groove (12); the key frame (1) is composed of a group of key frame modules (19), the key frame modules (19) are connected through a metal connecting plate (20) at the bottom, and adjacent key frame modules (19) are also connected in a matched manner through dovetail grooves (21) and dovetail blocks (22);

the weight (5) mainly comprises a weight balance rod (51), a mounting frame (52) and a rubber head (53), wherein the weight balance rod (51) is arranged on the mounting frame (52), the rubber head (53) is arranged at the top of the weight balance rod (51), a first curved surface (8) is arranged on the rubber head (53), and the weight (5) is rotatably arranged on the key frame (1) through the mounting frame (52).

2. The novel digital piano keyboard of claim 1, wherein: the bottoms of the white key (2) and the black key (3) are provided with a pair of hooks (25) which are oppositely arranged, and the tops of the counterweight rods (51) are hung through the hooks (25).

3. The novel digital piano keyboard of claim 1, wherein: a foam cushion (23) is arranged between the contact surface of the counterweight rod (51) and the key frame (1).

4. The novel digital piano keyboard of claim 1, wherein: and felts (24) are arranged between the contact surfaces of the white keys (2), the black keys (3) and the key frame (1).

5. The novel digital piano keyboard of any one of claims 1-4, wherein: the static contact (7) on the PCB (4) comprises a front static contact (71), a middle static contact (72) and a rear static contact (73), a rubber pad (15) is arranged between the pressing column (6) and the static contact (7) of the PCB (4), a front movable contact (16), a middle movable contact (17) and a rear movable contact (18) with increasing heights are arranged on the rubber pad (15), and the front movable contact (16), the middle movable contact (17) and the rear movable contact (18) are respectively in contact fit with the static contact (71), the middle static contact (72) and the rear static contact (73).