CN211125005U

CN211125005U - Novel assembly structure of keyboard lever arm

Info

Publication number: CN211125005U
Application number: CN201921449186.3U
Authority: CN
Inventors: 顾冰峰; 祁明辉
Original assignee: DELI MUSICAL INSTRUMENT (ZHUHAI) CO LTD
Current assignee: DELI MUSICAL INSTRUMENT (ZHUHAI) CO LTD
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-07-28
Anticipated expiration: 2029-09-03

Abstract

The utility model relates to a novel assembly structure of a keyboard lever arm, which comprises a key support, a white key, a black key and a heavy hammer lever, wherein the white key and the black key are arranged on the key support, one end of the white key is rotationally connected with the key support, and the other end of the white key can be pressed down and automatically reset; the weight lever is provided with an arc-shaped elastic clamping seat with an opening capable of being opened and automatically restoring, the elastic clamping seat is clamped on a support shaft of the key support, and the inner side surface of the elastic clamping seat is provided with a groove, so that the weight lever can be mounted on the key support in a seesaw type motion mode and is located under the white keys and the black keys in a one-to-one correspondence mode. Like this, can guarantee that the weight lever can not drop when playing, the keyboard stable performance is reliable, and the recess both can strengthen strutting and the automatic resilience performance of elasticity cassette moreover, and the installation easy operation, convenience, the lubricating oil of accessible inslot reduces the friction of elasticity cassette and support shaft again, and the shock attenuation is located to the rotatory strong point of help weight lever, promotes the uniformity and the stability that the key felt.

Description

Novel assembly structure of keyboard lever arm

Technical Field

The utility model belongs to the technical field of the electronic piano, in particular to novel assembly structure of keyboard lever arm.

Background

At present, the sound production principle of the existing electric piano on the market is that a keyboard is used as an on-off switch to form electrophoresis, once a key is pressed down, an internal crystal oscillator starts to work to form a pulse to generate a waveform with a certain frequency, and then the pulse is amplified by a frequency divider and sent to a loudspeaker to produce sound; however, the applicant found that: the whole sounding process of the electric piano depends on a frequency division analog circuit, the keyboard has no string striking feeling during playing, however, because a player expects more vivid traditional piano keyboard hand feeling to the electric piano, the prior art uses a lever principle to realize the hammer feeling of keys, but has the problem difficult to solve, namely the assembly and lubrication of the hammer lever type parts inevitably interfere the hand feeling, and the hammer lever type parts are expressed in the influences of the superposition of friction between rotary fulcrum shaft holes on hand feeling load and the interference of magnitude during the shaft hole assembly on the assembly, particularly when the injection molding process of the hammer lever is unstable, the hammer lever has the adverse effects of falling and insufficient lubrication on the hand feeling after the assembly.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a weight lever can not drop when guaranteeing to play, and the keyboard performance is more stable, more reliable, and installation operation is easy, convenient, still effectively reduces the vibrations of weight lever rotation support point department, promotes the novel assembly structure of keyboard lever arm of the uniformity and the stability that the key was felt.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a novel assembling structure of a keyboard lever arm comprises a key support, a white key and a black key, wherein the white key and the black key are arranged on the key support, one ends of the white key and the black key are rotatably connected with the key support, and the other ends of the white key and the black key can be pressed down and automatically reset; the novel assembling structure of the keyboard lever arm further comprises a heavy hammer lever, wherein the heavy hammer lever is provided with a circular arc-shaped elastic clamping seat, the opening of the circular arc-shaped elastic clamping seat can be opened and automatically restored, the elastic clamping seat is clamped on a support shaft of the key support, the inner side surface of the elastic clamping seat is provided with a groove, the heavy hammer lever can be installed on the key support in a seesaw type motion mode, and the heavy hammer lever is located under a white key and a black key in a one-to-one correspondence mode.

Furthermore, a supporting point of the heavy hammer lever for seesaw type movement is arranged between the opening and the groove, and the groove is an oil storage tank and is communicated with the supporting point.

Further, the elastic clamping seat is a C-shaped elastic clamping seat, and the groove faces the opening of the C-shaped elastic clamping seat.

Further, the section of the elastic clamping seat is 3/4 circular, and the groove is a U-shaped groove.

Furthermore, the elastic clamping seat, the groove and the heavy hammer lever are of an integrated structure.

Furthermore, soft rubber mats are arranged at the bottoms of the white keys and the black keys, a heavy hammer part is arranged at one end of the heavy hammer lever, a hard boss which is pressed against the soft rubber mats is arranged at the other end of the heavy hammer lever, and the soft rubber mats slide between the hard bosses in the early stage and the later stage of pressing the white keys and the black keys.

The utility model discloses beneficial effect:

the above technical scheme, the utility model, weight lever can not drop when guaranteeing to play, and the keyboard performance is more stable, more reliable, and through the recess both can strengthen strutting and the automatic resilience performance of elasticity cassette, the installation operation is easier, more convenient, and the lubricating oil in the accessible recess reduces the friction of elasticity cassette and support shaft again, and the shock attenuation of the rotatory strong point department of help weight lever promotes uniformity and the stability that the key felt greatly.

In addition, the soft rubber mat can buffer the mutual impact force of the keys and the hard bosses when the white keys and the black keys are pressed to generate the string hitting feeling, the vibration of the rotary supporting points of the heavy hammer lever is further reduced, the key playing hand feeling is better, and the hand feeling requirement of players is met.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a novel assembly structure of a keyboard lever arm according to the present invention;

FIG. 2 is another schematic structural view of an embodiment of the novel assembly structure of the keyboard lever arm according to the present invention;

FIG. 3 is a schematic structural diagram of a weight lever in an embodiment of the novel assembly structure of the keyboard lever arm according to the present invention;

fig. 4 is a schematic structural view illustrating an embodiment of a novel keyboard lever arm assembly structure according to the present invention, in which an elastic clip is clipped into a support shaft;

fig. 5 is a schematic structural view of an embodiment of a novel assembly structure of a keyboard lever arm according to the present invention, wherein an elastic clamping seat is clamped into or separated from a support shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 5:

the embodiment of the utility model provides a novel assembly structure of keyboard lever arm, including key support 1, white key 2, black key 3 and weight lever 4, white key 2 and black key 3 are installed on key support 1, and white key 2 and black key 3's one end and key support 1 rotate to be connected, and the other end can push down and reset automatically; be equipped with the convex elasticity cassette 5 that opening 8 can strut and automatic recovery on the weight lever 4, elasticity cassette 5 card is equipped with recess 7 on the support shaft 6 of key support 1 and the inboard surface, makes weight lever 4 can install on key support 1 with seesaw formula motion to be located white key 2 and black key 3 under the one-to-one, concrete structure can be: the elastic clamping seat 5 is a C-shaped elastic clamping seat, the groove 7 is opposite to an opening 8 of the C-shaped elastic clamping seat, a supporting point of the seesaw type movement of the heavy hammer lever 4 is arranged between the opening 8 and the groove 7, and the groove 7 is an oil storage tank and is communicated with the supporting point; the section of the elastic clamping seat 5 is 3/4 circles, the groove 7 is a U-shaped groove, and the elastic clamping seat 5 and the groove 7 are integrated with the weight lever 4 (for example, the elastic clamping seat 5 and the groove 7 are integrally injection-molded with the weight lever 4).

Thus, the novel assembly structure of keyboard lever arm is through the elastic clamping seat 5 with 6 interference fit of support shaft of key support 1, weight lever 4 can never drop when guaranteeing to play, the keyboard performance is more stable, it is more reliable, but also can strengthen strutting and the automatic resilience performance of elastic clamping seat 5 through recess 7 (as figure 4 and 5, wherein when elastic clamping seat 5 card goes into or separates support shaft 6, recess 7 department takes place deformation, make opening 8 strut to can let support shaft 6 pass through), the installation operation is easier, it is more convenient, again lubricating oil in the accessible recess 7 reduces the friction of elastic clamping seat 5 and support shaft 6, help 4 rotatory strong points of weight lever department shock attenuation, the uniformity and the stability that greatly promoted the key and felt.

In addition, soft rubber pads 9 are arranged at the bottoms of the white keys 2 and the black keys 3, a heavy hammer part 10 is arranged at one end of the heavy hammer lever 4, a hard boss 11 which is pressed against the soft rubber pads 9 is arranged at the other end of the heavy hammer lever, and the soft rubber pads 9 slide between the hard boss 11 in the early and later pressing processes of the white keys 2 and the black keys 3. Therefore, the novel assembly structure of keyboard lever arm can cushion the mutual impact of key and stereoplasm boss 11 when pressing white key 2 and black key 3 production string feeling through setting up soft cushion 9, further reduces the vibrations of 4 rotation support points of weight lever, and the key is played and is felt better.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. A novel assembling structure of a keyboard lever arm comprises a key support (1), a white key (2) and a black key (3), wherein the white key (2) and the black key (3) are installed on the key support (1), one ends of the white key (2) and the black key (3) are rotatably connected with the key support (1), and the other ends of the white key (2) and the black key (3) can be pressed down and automatically reset; the novel piano key is characterized by further comprising a heavy hammer lever (4), wherein an opening (8) of a circular arc-shaped elastic clamping seat (5) which can be unfolded and automatically reset is arranged on the heavy hammer lever (4), the elastic clamping seat (5) is clamped on a support shaft (6) of the key support (1), a groove (7) is formed in the inner side surface of the elastic clamping seat, the heavy hammer lever (4) can be installed on the key support (1) in a seesaw type motion mode, and the heavy hammer lever (4) is located under the white keys (2) and the black keys (3) in a one-to-one correspondence mode.

2. The novel keyboard lever arm assembly structure of claim 1, wherein a supporting point for seesaw movement of the weight lever (4) is provided between the opening (8) and the groove (7), and the groove (7) is an oil storage tank and is communicated with the supporting point.

3. The novel assembly structure of keyboard lever arm according to claim 1, characterized in that the elastic clamping seat (5) is a C-shaped elastic clamping seat, and the groove (7) is opposite to the opening (8) of the C-shaped elastic clamping seat.

4. The novel assembly structure of keyboard lever arm of claim 3, characterized in that the section of the elastic clamping seat (5) is 3/4 circular, and the groove (7) is a U-shaped groove.

5. The novel assembly structure of keyboard lever arm according to claim 1 or 2 or 3 or 4, characterized in that the elastic clamping seat (5) and the groove (7) are integrated with the weight lever (4).

6. The novel assembling structure of keyboard lever arm according to claim 1 or 2 or 3 or 4, characterized in that the bottom of the white key (2) and the black key (3) is provided with a soft rubber pad (9), one end of the weight lever (4) is provided with a weight part (10), the other end is provided with a hard boss (11) which is pressed against the soft rubber pad (9), and the soft rubber pad (9) slides between the hard boss (11) and the early and later processes of pressing down the white key (2) and the black key (3).