Force adjusting mechanism, key force device and keyboard playing equipment

Abstract

The invention discloses a force adjusting mechanism, which is used for adjusting the pressing force of keys of keyboard playing equipment, and is characterized in that the force adjusting mechanism comprises a plurality of bias components, each of the plurality of bias components abuts against one key and applies bias force to the key; and a coupling member to which each of the plurality of biasing members is coupled. The coupling member and the plurality of biasing members are at least partially disposed in a vacant space between a key and a base of the keyboard performance apparatus, and the plurality of biasing members are configured to adjust a pressing force of the key by changing a biasing force applied to the key. The invention further relates to a key force device which comprises the force adjusting mechanism. The invention further relates to keyboard playing equipment which comprises the force adjusting mechanism or the key force device.

Description

Technical Field

[0001] The present application generally relates to the field of musical instruments. More specifically, the present application relates to a force adjustment mechanism for adjusting the pressing force of a key. The present application also relates to a key force device, which includes the force adjustment mechanism. The present application also relates to a keyboard playing device, which includes the key force device. Background Art

[0002] A keyboard performance device is a musical instrument in which keys forming a keyboard are arranged. Performance devices with a keyboard include, for example, a piano, a pipe organ, an accordion, an electronic organ, a double keyboard, a harmonica, a Japanese organ, an electronic organ, a harpsichord, an electronic synthesizer, and the like.

[0003] With the development of the times, more and more people are learning to play keyboard instruments, and the age span is getting wider and wider. Everyone's finger strength is different. However, usually the pressing force of the keys of keyboard playing equipment is fixed after it is manufactured, which is difficult to meet the playing force requirements of everyone.

[0004] Therefore, there is a need to improve keyboard performance equipment in the prior art. Summary of the invention

[0005] One of the purposes of the present application is to provide a force adjustment mechanism, a key force device and a keyboard playing apparatus that can overcome at least one defect in the prior art.

[0006] One object of the present application is to provide a force adjustment mechanism that does not interfere with or disturb the operation of the keys and does not require any changes to the structure of the keyboard playing device.

[0007] Another object of the present application is to provide a force adjustment mechanism that can be conveniently installed as a whole in a keyboard performance device.

[0008] Another object of the present application is to provide a key force device that can set and adjust the pressing force of the keys of a keyboard performance device.

[0009] According to a first aspect of the present application, there is provided a force adjustment mechanism for adjusting the pressing force of a key of a keyboard performance device, wherein the force adjustment mechanism comprises:

[0010] a plurality of biasing members, each of the plurality of biasing members abutting against a key and applying a biasing force to the key; and

[0011] a coupling member to which each of the plurality of biasing members is coupled;

[0012] The coupling member and the plurality of biasing members are at least partially disposed in an empty space between a key and a base of the keyboard performance device, and the plurality of biasing members are configured to adjust the pressing force of the key by changing the biasing force applied to the key.

[0013] The force adjustment mechanism is located in the empty space between the keys and the base, and will not interfere with the operation of the keys. At the same time, no modification is required to the structure of the keyboard performance device. That is, the force adjustment mechanism can be incorporated into the keyboard performance device without any modification to the existing keyboard performance device. Therefore, the force adjustment mechanism can be incorporated into the existing keyboard performance device without modifying the keyboard performance device, and has good adaptability. This is a major improvement over existing products and has broad market prospects.

[0014] In some embodiments of the velocity adjustment mechanism, the coupling member and the plurality of biasing members are detachably fixed to a base of the keyboard performance device.

[0015] In some embodiments of the force adjustment mechanism, the biasing member is in the form of an elongated elastic element, one end of which abuts against the key and the other end is fixed to the coupling member.

[0016] In some embodiments of the force adjustment mechanism, the plurality of biasing members are arranged side by side in alignment with each other, forming a comb-like structure together with the coupling member.

[0017] In some embodiments of the force adjustment mechanism, each of the plurality of biasing members abuts against a stopper of a key to apply a biasing force to the key.

[0018] In some embodiments of the force adjustment mechanism, the force adjustment mechanism also includes a base, and the connecting member and the biasing member are supported on the base, wherein the base is configured to be fixed to the base of the keyboard playing device, so that the force adjustment mechanism is fixed to the base of the keyboard playing device via the base and is installed on the base of the keyboard playing device as an integral structure.

[0019] Before the force adjustment mechanism is installed in the empty space between the key and the base, the force adjustment mechanism can be assembled into an integral structure, that is, the connecting member and the biasing member can be supported on the base, the adjustment assembly can be associated with the connecting member, and the adjustment assembly can be attached to the base. In this way, when installing the force adjustment mechanism, it is only necessary to align the biasing member with the part to be contacted on the key and fix the base to the base by fasteners such as bolts. The installation process is simple and easy to operate, and no additional changes to the keyboard performance device are required.

[0020] In some embodiments of the force adjustment mechanism, the biasing member applies a biasing force to the key through elastic deformation, so that the biasing member is configured to adjust the pressing force of the key by changing the elastic deformation of the biasing member.

[0021] In some embodiments of the force adjustment mechanism, the connecting member is pivotally supported on the base of the keyboard playing device, wherein the pivotal movement of the connecting member causes the biasing member to rotate around the pivot axis of the connecting member, so that the elastic deformation of the biasing member changes, resulting in a change in the biasing force applied by the biasing member to the key.

[0022] In some embodiments of the force adjustment mechanism, the force adjustment mechanism further includes an adjustment component, and the adjustment component includes:

[0023] a follower fixed to the coupling member; and

[0024] a cam, the follower being configured to maintain contact with a contoured surface of the cam;

[0025] The pivoting of the cam causes the follower to rotate around the pivot axis of the connecting member within a following range, and the rotation of the follower causes the pivoting movement of the connecting member, so that the cam is configured to adjust the pressing force of the key through the pivoting of the cam.

[0026] In some embodiments of the force adjustment mechanism, the profile of the cam is continuously gradient, so that the follower is configured to rotate in a continuously changing manner within its following range.

[0027] In some embodiments of the force adjustment mechanism, the profile of the cam is segmented, consisting of a plurality of profile segments, so that the follower is configured to rotate in a step-jump manner within its following range.

[0028] In some embodiments of the force adjustment mechanism, the adjustment assembly further comprises a knob operatively coupled to the cam such that the knob is configured to drive the cam to pivot through rotation of the knob.

[0029] In some embodiments of the force adjustment mechanism, a mark is provided on the knob, and the mark indicates the position of the biasing member based on the position of the pivot of the cam to show the pressing force of the key.

[0030] In some embodiments of the force adjustment mechanism, the adjustment assembly further includes a power unit, and the power unit includes a motor for driving the cam to pivot.

[0031] In some embodiments of the force adjustment mechanism, the connecting member is supported on the base of the keyboard playing device in a fixed manner, wherein the biasing member is configured to change the length of the elastically deformed portion of the biasing member so that the elastic deformation of the biasing member changes, thereby causing the biasing force applied by the biasing member to the key to change.

[0032] In some embodiments of the force adjustment mechanism, the force adjustment mechanism also includes an adjustment component, the adjustment component includes a slider, the top of the slider supports the biasing member, so that the biasing member undergoes elastic deformation with the top of the slider as a fulcrum under the action of the key, wherein the slider is configured to change the position of the biasing member supported by the top of the slider through the sliding of the slider, so that the elastic deformation of the biasing member changes, resulting in a change in the bias force applied by the biasing member to the key.

[0033] In some embodiments of the force adjustment mechanism, the adjustment assembly further comprises a track configured to allow the slider to slide within the track.

[0034] In some embodiments of the force adjustment mechanism, the adjustment assembly further includes an actuating element coupled to the slider and configured to drive the slider to slide.

[0035] In some embodiments of the force adjustment mechanism, one end of the biasing member is fixed to the base of a keyboard playing device, and the other end is against a key of the keyboard playing device, wherein the force adjustment mechanism also includes a slider, the top of which supports the biasing member, so that the biasing member undergoes elastic deformation with the top of the slider as a fulcrum under the action of the key, wherein the slider is configured to change the position of the biasing member supported by the top of the slider through the sliding of the slider, so that the elastic deformation of the biasing member changes, resulting in a change in the biasing force applied by the biasing member to the key.

[0036] In some embodiments of the force adjustment mechanism, the biasing member includes a support rod and a spring, the connecting member includes a sleeve, the support rod extends into the sleeve, and the spring is arranged in the sleeve, wherein the support rod is provided with a stop block, and the spring abuts against the stop block to push the support rod toward the key, thereby applying a biasing force to the key.

[0037] In some embodiments of the force adjustment mechanism, the force adjustment mechanism also includes an adjusting member, which is engaged with the sleeve by a threaded connection and can move relative to the sleeve, and the spring abuts between the stopper and the end of the adjusting member, wherein the adjusting member is configured to change the biasing force applied by the spring to the key by changing the position of the adjusting member relative to the sleeve.

[0038] In some embodiments of the force adjustment mechanism, the force adjustment mechanism further comprises a sensor configured to detect a biasing force applied by the biasing member to the key.

[0039] In some embodiments of the force adjustment mechanism, the force adjustment mechanism further comprises a display device configured to display information related to the biasing force applied by the biasing member to the key detected by the sensor.

[0040] According to a second aspect of the present application, there is provided a key velocity device for setting and adjusting the pressing force of a key of a keyboard performance device, wherein the key velocity device comprises:

[0041] A force setting mechanism, wherein the force setting mechanism is fixed between the keys and the base of the keyboard performance device or between the keys and the seat of the keyboard performance device; and

[0042] The force adjustment mechanism as described above,

[0043] The force setting mechanism is configured to set the initial pressing force of the keys of the keyboard playing device, the force adjustment mechanism is configured to adjust the pressing force of the keys of the keyboard playing device, and the force setting mechanism and the force adjustment mechanism are configured to jointly limit the final pressing force of the keys of the keyboard playing device.

[0044] In some embodiments of the key velocity device, the velocity setting mechanism is configured to apply a biasing force to the keys of the keyboard performance device to bias the keys of the keyboard performance device to an initial position or to bias the keys of the keyboard performance device toward the initial position.

[0045] In some embodiments of the key force device, the key force device also includes an additional force adjustment mechanism, which is configured to be associated with the force setting mechanism to adjust the initial pressing force set by the force setting mechanism by changing the bias force applied by the force setting mechanism to the keys of the keyboard playing device.

[0046] In some embodiments of the key force device, the additional force adjustment mechanism includes an adjusting element, one end of the force setting mechanism is fixed on the key of the keyboard playing device, and the other end is fixed to the adjusting element, wherein the adjusting element is configured to change the bias force applied by the force setting mechanism to the key of the keyboard playing device.

[0047] In some embodiments of the key force device, the adjusting element is in the form of a screw, and the force setting mechanism is in the form of a coil spring, the screw extends through the coil spring, wherein one end of the coil spring is fixed to the key of the keyboard playing device, and the other end is fixed to the screw, and wherein the screw is configured to change the tensile length of the coil spring by rotating the screw, thereby changing the bias force applied by the coil spring to the key of the keyboard playing device.

[0048] In some embodiments of the key force device, the adjusting element is in the form of a gear and a rack, the force setting mechanism is in the form of a coil spring, the rack extends through the coil spring, wherein one end of the coil spring is fixed to the key of the keyboard playing device, and the other end is fixed to the rack, and wherein the gear and rack are configured to change the tensile length of the coil spring by causing linear movement of the rack through the rotation of the gear, thereby changing the bias force applied by the coil spring to the key of the keyboard playing device.

[0049] In some embodiments of the key force device, the force setting mechanism and the force adjustment mechanism are structurally independent of each other.

[0050] According to a third aspect of the present application, a keyboard playing device is provided, which includes the force adjustment mechanism as described above.

[0051] According to a fourth aspect of the present application, a keyboard performance device is provided, which includes the key force device as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present application will be better understood, in which:

[0053] Figure 1 is a perspective view of a keyboard performance device according to some embodiments of the present application;

[0054] Figure 2 is a partial cross-sectional side view of a keyboard performance device according to some embodiments of the present application;

[0055] Figure 3 is a cutaway perspective view of a keyboard performance device according to some embodiments of the present application;

[0056] Figure 4is a cutaway perspective view of a keyboard performance device according to some embodiments of the present application;

[0057] Figure 5 is an enlarged cross-sectional perspective view of a keyboard performance device according to some embodiments of the present application;

[0058] Figure 6 is a partial cross-sectional side view of a keyboard performance device according to some embodiments of the present application;

[0059] Figure 7 is a partial cross-sectional side view of a keyboard performance device according to some embodiments of the present application;

[0060] Figure 8 is a perspective view of a keyboard performance device according to some embodiments of the present application;

[0061] Fig. 9 is a cutaway perspective view of a keyboard performance device according to some embodiments of the present application;

[0062] Fig.10 is a cross-sectional top view of a keyboard performance device according to some embodiments of the present application;

[0063] Fig.11 is a sectional side view of a keyboard performance device according to some embodiments of the present application;

[0064] Fig.12 is a partial cross-sectional side view of a keyboard performance device according to some embodiments of the present application;

[0065] Fig.13 is a partial cross-sectional side view of a keyboard performance device according to some embodiments of the present application;

[0066] Fig.14 is a partially cut-away side view of a keyboard performance device according to some embodiments of the present application; and

[0067] Fig.15 is a partial cross-sectional side view of a keyboard performance device according to some embodiments of the present application. DETAILED DESCRIPTION

[0068] The present application will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and fully explain the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0069] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0070] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present application. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0071] The singular forms "a", "the" and "the" used in the specification include the plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items. The terms "between X and Y" and "between approximately X and Y" used in the specification should be interpreted as including X and Y. The term "between approximately X and Y" used in this specification means "between approximately X and approximately Y", and the term "from approximately X to Y" used in this specification means "from approximately X to approximately Y".

[0072] In the specification, when an element is said to be "on", "attached", "connected", "coupled" or "contacting" another element, the element may be directly on, attached, connected, coupled or contacting another element, or there may be an intermediate element. In contrast, when an element is said to be "directly" "on", "directly attached", "directly connected", "directly coupled" or "directly contacting" another element, there will be no intermediate element. In the specification, a feature is arranged "adjacent" to another feature, which may refer to a feature having a portion that overlaps with an adjacent feature or a portion that is above or below an adjacent feature.

[0073] In the specification, spatial relational terms such as "upper", "lower", "left", "right", "front", "back", "higher", "lower", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0074] Keyboard playing equipment may include conventional playing instruments such as piano, organ, accordion, electronic keyboard, double keyboard, harmonica, Japanese organ, electronic organ, harpsichord, electronic synthesizer, etc., and may also include practice keyboards for practice or beginners, or may include any other musical instrument that is played using the keys that form a keyboard.

[0075] With the development of the times, more and more people are learning to play keyboard instruments, and the age span is getting wider and wider. Everyone's finger strength is different. However, usually the pressing force of the keys of keyboard playing equipment is fixed after it is manufactured, which is difficult to meet the playing force requirements of everyone.

[0076] For example, children have much less finger strength than adults, so they have a much harder time playing keyboard instruments than adults. Even among adults, there are certain differences in finger strength between people and between men and women. In order to achieve satisfactory playing comfort, the pressing force of the keys usually needs to be matched to the individual performer. Therefore, playing equipment with a fixed pressing force usually cannot meet the requirements of everyone.

[0077] To this end, a variety of means can be used to solve the problem of pressing force. For example, a special keyboard can be customized for different performers so that the pressing force of the keys matches the performers. However, such customization is costly, cannot be mass-produced, and is difficult to implement.

[0078] Another way is to use a key force device, including a force setting mechanism and a force adjustment mechanism. On the one hand, the force of the key can be limited by the force setting mechanism, and on the other hand, the force of the key can be adjusted by the force adjustment mechanism to meet the key force requirements of different players.

[0079] The following will describe in detail the keyboard performance device 1 and its key force device according to some embodiments of the present application with reference to the accompanying drawings. Figure 1 As shown, the keyboard performance device 1 can generally include a base 12 and a keyboard 14, and the keyboard 14 includes a plurality of keys 140, which are arranged side by side, and the player performs by pressing the keys 140. The keys 140 can generally include, for example, white keys 140A and black keys 140B for playing different tones.

[0080] According to some embodiments, the keyboard performance device 1 may further include a side panel 16 and a music stand 18 , wherein the side panel 16 is configured to surround at least a portion of the keyboard 14 to protect the keyboard 14 , and the music stand 18 is used to place music scores for the performer to browse during performance.

[0081] Figure 2The cross-sectional side view of the keyboard 140 is shown, wherein for the keys 140, the structures of the white keys 140A and the black keys 140B are roughly similar (the sizes are different). For the sake of clarity, the following mainly describes the white keys 140A. Those skilled in the art can understand that the structure of the keys described below is also applicable to the black keys 140B. According to some embodiments of the present application, Figure 2 As shown, the key 140 includes a key body 20, which can be in the form of a generally long rod, generally having a rectangular cross section. The key body 20 has a pressing portion 202 and a restoring portion 204 opposite to the pressing portion 202, and the pressing portion 202 and the restoring portion 204 can be generally located at opposite ends of the key body 20.

[0082] The key body 20 may have a fulcrum portion 206 configured so that the key body 20 can pivot about the fulcrum portion 206. In some embodiments, the fulcrum portion 206 may be located between the pressing portion 202 and the restoring portion 204, and the fulcrum portion 206 may be closer to the restoring portion 204 than the pressing portion 202.

[0083] The performer can press the key 140 to play by pressing the pressing portion 202. For example, a pressing surface 203 may be formed at the pressing portion 202. The performer presses the pressing surface 203 to cause the key body 20 to pivot about the fulcrum portion 206, thereby pressing the key 140, so that the key 140 can move between an initial position and an operating position. In the initial position, the key 140 is in a resting state, and the performer does not use the key to play. In the operating position, the key 140 is pressed to trigger the generation of sound. For example, for a piano, when the key 140 is pressed, the hammer strikes or strikes the string to produce a sound, and for an electronic keyboard, when the key 140 is pressed, the audio circuit is connected to produce a sound. When the key 140 is pressed, the key body 20 pivots along the fulcrum portion 206. Figure 2 The key 140 is pivoted in the counterclockwise direction in the middle, so that the key 140 moves from the initial position to the operating position. When the key 140 is reset, the key body 20 moves along the fulcrum portion 206. Figure 2 The key 140 is pivoted in the clockwise direction in the middle so that the key 140 returns from the operation to the initial position.

[0084] According to some embodiments, Figure 2As shown, the keyboard 14 may include a base 22, which may be disposed below the key 140 and between the key 140 and the base 12. The base 22 may be positioned close to the fulcrum portion 206 and the return portion 204, so that a space 220 is formed between the pressing portion 202 of the key 140 (especially for the white key 140A) and the base 12. The base 22 may be fixed to the base 12, for example, by screws, etc., and may be configured to be associated with the key 140 so as to assist the key 140 in completing its functional operation.

[0085] A fulcrum recess 222 may be formed on the seat 22, and the fulcrum recess 222 is configured to cooperate with the fulcrum portion 206 of the key body 20, so that the fulcrum portion 206 can be abutted against the fulcrum recess 222 or accommodated in the fulcrum recess 222 to form a fulcrum, thereby the key body 20 can be formed as a lever with the fulcrum portion 206 and the fulcrum recess 222 as fulcrums. In some embodiments, the fulcrum portion 206 can be a protrusion protruding from the key body 20 toward the seat 22 and the base 12, and the fulcrum recess 222 can be in the form of a groove to accommodate the protrusion, and the fulcrum portion 206 can perform joint movement in the fulcrum recess 222. Further, as Figure 2 As shown, the fulcrum portion 206 can be in the form of a triangular protrusion, and the fulcrum recess 222 can correspondingly be in the form of a triangular groove, with the apex of the triangular protrusion abutting against the apex of the triangular groove, so as to prevent the fulcrum portion 206 from sliding when the fulcrum portion 206 moves relative to the fulcrum recess 222.

[0086] In some embodiments, for example, in the case where the keyboard performance device 1 is an electronic piano, the circuit board 224 may be provided on the piano seat 22. The circuit board 224 may be fixed to the piano seat 22 by, for example, bolts, facing the key body 20 of the key 140. A contact 208 may be provided on the side of the key body 20 facing the piano seat 22, and the contact 208 may be, for example, adhered to the key body 20. The contact 208 may be provided between the fulcrum portion 206 and the pressing portion 202, corresponding to the circuit board 224, and spaced apart from the circuit board 224 and not in contact with the circuit board 224 in a normal state. When the player presses the pressing portion 202 of the key body 20, the key body 20 pivots about the fulcrum portion 206, so that the contact 208 moves toward the circuit board 224, and finally contacts with the circuit board 224, to complete the operation of the key 140.

[0087] According to some embodiments of the present application, Figure 2As shown, the key force device may include a force setting mechanism 30, which is configured to set the initial pressing force of the key 140. The force setting mechanism 30 may be arranged at the reset portion 204 of the key body 20 to suppress the pivoting of the key body 20 around the fulcrum portion 206, thereby biasing the key 140 to its initial position or biasing the key 140 toward its initial position. When the player presses the pressing surface 203 of the key 140, the biasing force of the force setting mechanism 30 needs to be overcome to press the pressing portion 202, so that the key 140 pivots around the fulcrum portion 206 and moves from the initial position to the operating position. When the player releases the key 140, the biasing force of the force setting mechanism 30 causes the key 140 to pivot in the opposite direction around the fulcrum portion 206 and return from the operating position to the initial position. The biasing force of the force setting mechanism 30 corresponds to the initial pressing force of the key 140 , that is, the force setting mechanism 30 can be used to set the initial pressing force of the key 140 .

[0088] According to some embodiments of the present application, Figure 2 As shown, the force setting mechanism 30 may be in the form of a spring, such as a coil spring, one end of which is fixed to the reset portion 204 of the key body 20, and the other end of which may be fixed to, for example, the base 12 or the pedestal 22. In the illustrated embodiment, the pedestal 22 may be formed with a protrusion 226, which corresponds to the reset portion 204 of the key body 20, and the other end of the spring is fixed to the protrusion 226. The extension direction or the stretching direction of the spring may be substantially perpendicular to the extension direction of the key body 20, so that when the key 140 pivots about the fulcrum portion 206, the reset portion 204 moves substantially along the extension direction or the stretching direction of the spring.

[0089] In order to ensure that the key 140 can always be correctly reset to its initial position, the force setting mechanism 30 usually keeps applying a biasing force to the key 140, for example, the spring is kept in a stretched state. In this case, in order to prevent the key 140 from moving beyond its initial position under the action of the force setting mechanism 30, a limit position structure can be provided. According to some embodiments of the present application, such as Figure 2 As shown, a limit frame 228 can be provided on the piano seat 22, and a limit member 210 can be formed on the key body 20. The limit frame 228 and the limit member 210 interact with each other to produce a limit effect.

[0090] The stopper 210 generally extends from the key body 20 toward the base 12. For the white key 140A, the stopper 210 can be located between the pressing portion 202 and the fulcrum portion 206, and for the black key 140B, the stopper 210 can be located at the pressing portion 202, so that for the keyboard 14 as a whole, the stoppers 210 of all the keys 140 can be arranged side by side in alignment with each other. When the pressing portion 202 is pressed, the stopper 210 is disengaged from the stopper frame 228, and the key 140 pivots about the fulcrum portion 206 from the initial position to the operating position. When the pressing portion 202 is released, the key 140 pivots about the fulcrum portion 206 to return from the operating position to the initial position. When the key 140 reaches the initial position, the stopper 210 on the key body 20 contacts the stopper frame 228 disposed on the pedestal 22 and is blocked by the stopper frame 228 and cannot continue to move, thereby preventing the key 140 from further pivoting beyond the initial position. In some embodiments, a buffer pad may be disposed on the stopper frame 228 or the stopper 210 to mitigate the impact generated when the stopper 210 touches the stopper frame 228.

[0091] Figure 3-7 A schematic diagram of a keyboard performance device 1 according to some embodiments of the present application is shown, wherein Figure 3-5 shows a cutaway perspective view of the keyboard performance device 1, Figure 6 shows a partially cut-away side view of the keyboard performance device 1, Figure 7 Another partially cut-away side view of the keyboard performance device 1 is shown.

[0092] like Figure 3-6 As shown, the keyboard force device of the keyboard performance device 1 also includes a force adjustment mechanism 42, which is configured to adjust the pressing force of the key 140 to meet the requirements of different players for the key pressing force as much as possible. Specifically, the force adjustment mechanism 42 can apply a certain bias force to the key 140. When pressing the pressing part 202 of the key 140, it is necessary to overcome the bias force applied by the force adjustment mechanism 42 to the key 140 to press the key 140. The magnitude of the bias force is adjustable, and the pressing force of the key 140 is adjusted by adjusting the bias force applied by the force adjustment mechanism 42 to the key 140. The force setting mechanism 30 and the force adjustment mechanism 42 can cooperate with each other to jointly define the final pressing force of the key 140, that is, when pressing the pressing part 202 of the key 140, it is necessary to simultaneously overcome the bias forces applied by the force setting mechanism 30 and the force adjustment mechanism 42 to the key 140 to press the key 140.

[0093] Generally, there is a certain space between the key 140 and the base 12 of the keyboard performance device 1 for the pivoting of the key 140 between the initial position and the operating position to prevent other parts of the keyboard performance device 1, such as the base 12, from affecting the movement of the key 140. This space is also referred to as "vacant space" 220 in this article. Generally speaking, when the key 140 is in the initial position, the size of the space between the key 140 and the base 12 is the largest, and when the key 140 is in the operating position, the size of the space between the key 140 and the base 12 is the smallest. Due to the design of the structure of the key 140 itself and the pivoting movement of the key 140 around its fulcrum portion 206, the pivoting of the key 140 between the initial position and the operating position usually does not completely occupy the space between the key 140 and the base 12, that is, when the key 140 pivots to the operating position, there is still a certain size of unoccupied space between the key 140 and the base 12.

[0094] According to some embodiments of the present application, Figure 3-7 As shown, the force adjustment mechanism 42 can be at least partially arranged in the empty space 220 between the key 140 and the base 12. For example, the force adjustment mechanism 42 can be completely contained in the empty space 220, or a part of it can extend out of the empty space 220, so as to facilitate the installation and operation of the force adjustment mechanism 42. The force adjustment mechanism 42 is in the empty space 220 between the key 140 and the base 12, and will not interfere with or disturb the operation of the key 140, and at the same time, it is not necessary to make changes to the structure of the keyboard performance device 1, that is, according to some embodiments of the present application, the force adjustment mechanism 42 can be incorporated into the keyboard performance device 1 without any changes to the existing keyboard performance device 1. Therefore, according to an important aspect of the present application, the force adjustment mechanism 42 can be incorporated into the existing keyboard performance device 1 without modifying the keyboard performance device 1, and has good adaptability. This is a major improvement over existing products and has broad market prospects.

[0095] According to the present application, the force adjustment mechanism 42 may include a biasing member 422 and a connecting member 424, wherein the biasing member 422 abuts against the key 140 and applies a biasing force to the key 140 so as to adjust the pressing force of the key 140, and the connecting member 424 is used to connect the biasing member 422, for example, the biasing member 422 is fixed to the connecting member 424.

[0096] According to some embodiments of the present application, the force adjustment mechanism 42 may include a plurality of biasing members 422, for example, each key 140 corresponds to a biasing member 422, so that each biasing member 422 applies a biasing force to the corresponding key 140 individually. The biasing force applied by the biasing member 422 to the key 140 biases the key 140 toward its initial position. When the performer presses the pressing surface 203 of the key 140, it is necessary to overcome the biasing force of the force setting mechanism 30 and the biasing member 422 to press the pressing portion 202, so that the key 140 pivots around the fulcrum portion 206 and moves from the initial position to the operating position. When the performer releases the key 140, the biasing force of the force setting mechanism 30 and the biasing member 422 causes the key 140 to pivot in the opposite direction around the fulcrum portion 206 and return from the operating position to the initial position. By changing the biasing force applied by the biasing member 422 to the corresponding key 140 , the biasing force that the player needs to overcome when depressing the depressing surface 203 of the key 140 can be changed, thereby changing the depressing force of the key 140 .

[0097] The biasing member 422 can be in the form of an elastic element and can have an elongated shape, such as a long strip of reed as shown in the figure. In this case, the biasing member 422 can apply a biasing force to the key 140 by its own elastic deformation, and the magnitude of the biasing force applied to the key 140 can be adjusted by changing the magnitude of the elastic deformation, such as Figure 6-7 One end of the elastic element can be against the key 140 , and the other end is fixed to the connecting member 424 , so that the elastic element is elastically deformed by the action with the key 140 .

[0098] The coupling member 424 may be in the form of an elongated rod, disposed below the pressing portion 202 of the key 140, close to the base 12. According to some embodiments of the present application, a plurality of biasing members 422 may be arranged side by side in alignment with each other and fixed to the coupling member 424, such as Figure 4 In this case, the biasing member 422 and the connecting member 424 together can form a comb-like structure similar to a comb. The biasing member 422 can be fixed to the connecting member 424 by, for example, welding, or can be formed integrally with the connecting member 424. The connecting member 424 can extend across the entire keyboard 14, so that a plurality of biasing members 422 can extend across the entire keyboard 14 as a whole, so as to facilitate each biasing member 422 to correspond to a corresponding key 140 and apply a biasing force to the key 140.

[0099] In some embodiments, one end of the biasing member 422 may abut against the stopper 210 of the key body 20 of the key 140, such as Figure 6 and 7As shown. In the case where the stoppers 210 of all the keys 140 are arranged side by side in alignment with each other, correspondingly, the plurality of biasing members 422 can also be arranged side by side in alignment with each other. In this way, the alignment installation of the biasing members 422 can be facilitated. For example, when installing the force adjustment mechanism 42, only a few biasing members 422 (such as the two biasing members on the left and right sides) need to be selected to align with the stoppers 210 on the corresponding keys 140, so that all the biasing members 422 can be aligned with the corresponding stoppers 210, and at the same time, the biasing force applied by each biasing member 422 to the key 140 can be made equal.

[0100] According to some embodiments of the present application, Figure 6-7 As shown, the coupling member 424 can be arranged below the pressing portion 202 of the key 140, so that the coupling member 424 does not contact and interfere with the key 140 when the key 140 is in the operating position. The biasing member 422 extends from the coupling member 424 toward the key body 20 and finally abuts against the key body 20, specifically, it can extend toward the stopper 210 of the key body 20 and finally abut against the stopper 210. The biasing member 422 and the coupling member 424 are both arranged in the vacant space 220 between the key 140 and the base 12, and will not interfere with the key 140 and cause the key 140 to be unable to pivot to the operating position, that is, will not prevent the key 140 from pivoting from the initial position to the operating position. When the key 140 is pressed down, the key 140 (specifically, the stopper 210) pushes one end of the biasing member 422 to move downward, thereby overcoming the biasing force of the biasing member 422 and pivoting from the initial position to the operating position.

[0101] According to some embodiments of the present application, the connecting member 424 can be pivotally supported on the base 12, and the biasing force applied by the biasing member 422 to the key 140 is adjusted by the pivoting of the connecting member 424. When the connecting member 424 pivots, the extension direction and angle of the biasing member 422 fixed to the connecting member 424 change accordingly, thereby changing the elastic deformation of the biasing member 422, and then changing the biasing force applied to the key 140. Figure 6-7 As shown, those skilled in the art can understand that when the connecting member 424 pivots in the clockwise direction in the figure, the biasing force applied by the biasing member 422 to the key 140 decreases, and when the connecting member 424 pivots in the counterclockwise direction in the figure, the biasing force applied by the biasing member 422 to the key 140 increases.

[0102] The force adjustment mechanism 42 may further include an adjustment assembly 43, which may be configured to adjust the biasing force applied by the biasing member 422 to the key 140. Figure 3-7In the illustrated embodiment, the adjustment assembly 43 can adjust the biasing force applied by the biasing member 422 to the key 140 by adjusting the pivoting of the connecting member 424 .

[0103] In some embodiments, Figure 6-7 As shown, the adjustment assembly 43 may include a housing 430, a pivot 432, a cam 434, and a follower 436. The pivot 432 is configured to be able to pivot about its pivot axis, the cam 434 is coupled to the pivot 432 so that the cam 434 rotates as the pivot 432 pivots, and the follower 436 is fixed to the coupling member 424 and extends from the coupling member 424 toward the cam 434. The follower 436 may be configured to maintain contact with the contour surface of the cam 434, and in the case where the coupling member 424 is able to pivot, as the cam 434 rotates, the follower 436 correspondingly rotates about the pivot axis of the coupling member 424 and follows the contour of the cam 434. The rotation of the follower 436 drives the coupling member 424 to pivot about its own pivot axis, thereby causing the biasing member 422 to rotate about the pivot axis of the coupling member 424, so that the extension direction and angle of the biasing member 422 change accordingly, thereby changing the elastic deformation of the biasing member 422, thereby changing the biasing force applied to the key 140. The pivot 432, the cam 434 and the follower 436 can all be accommodated in the housing 430, one end of the coupling member 424 can extend into the housing 430, and the follower 436 is fixed to the end of the coupling member 424 extending into the housing 430.

[0104] The cam 434 may be configured to cause the follower 436 to reciprocate within a following range as the cam 434 pivots, thereby causing the biasing member 422 to reciprocate within a biasing range. The following range of the follower 436 may be defined by the profile of the cam 434, and the biasing range of the biasing member 422 may roughly correspond to the following range of the follower 436. For example, when the follower 436 rotates around the pivot axis of the coupling member 424 within a following range such as 0° to 45°, the biasing member 422 correspondingly also rotates around the pivot axis of the coupling member 424 within a biasing range of approximately 0° to 45°. The biasing range of the biasing member 422 roughly defines the adjustment range of the force adjustment mechanism 42.

[0105] The cam 434 may be in the form of an eccentric cam. Figure 6 As shown, it shows a form of an eccentric cam, wherein the profile of the cam 434 is continuously and gradually changed, so that the follower 436 can rotate in a continuously changing manner within its follow-up range, and accordingly, the biasing member 422 rotates in a continuously changing manner within its biasing range, so that the pressing force of the key can be adjusted in a continuously changing manner. Figure 7As shown, another form of eccentric cam is shown, wherein the profile of the cam 434 is segmented, that is, the profile of the cam 434 is composed of a plurality of profile segments, so that the follower 436 can rotate in a step-jump manner within its follow-up range, and accordingly, the biasing member 422 rotates in a step-jump manner within its biasing range, so that the pressing force of the key can be adjusted in a gear selection manner. It can be understood by those skilled in the art that such an embodiment is merely exemplary, and the cam 434 can adopt any suitable structural form that enables the follower 436 to rotate within a predetermined follow-up range.

[0106] In some embodiments, Figure 6-7 As shown, the follower 436 can be kept in contact with the contour surface of the cam 424 by the biasing force of the biasing member 422. As described above, the biasing member 422 is elastically deformed against the key 140 to apply a biasing force to the key 140. At this time, due to the elastic deformation of the biasing member 422, it also applies a biasing force to the connecting member 424 and the follower 436 fixed to the connecting member 424, and the biasing force keeps the follower 436 in contact with the contour surface of the cam 424. Such a structure makes full use of the characteristics of the biasing member 422, so that the operations of multiple components are interrelated, and compared with the structure in which each component is controlled and operated separately, the number of components is reduced, the structure is simplified, and the cost is reduced. In addition, it can be imagined by those skilled in the art that the follower 436 can also be kept in contact with the contour surface of the cam 424 by another biasing element.

[0107] The adjustment component 43 can be set outside the keyboard 14, that is, the adjustment component 43 may not be set between the key 140 and the base 12. For example, the adjustment component 43 can be set on the side of the keyboard playing device 1 to facilitate the performer to operate the force adjustment mechanism 42, and use the adjustment component 43 to adjust the pressing force of the key 140.

[0108] According to some embodiments, Figure 4-5 As shown, the adjustment assembly 43 may include a knob 438 disposed outside the housing 430 and coupled to the pivot 432. The pivot 432 may be pivoted by rotating the knob 438. The knob 438 may also be provided with markings to indicate the position of the biasing member 422 based on the current position of the pivot 432. For example, for Figure 6 In the embodiment shown, the knob 438 may display a force adjustment range corresponding to the cam 434's follow-up range and the biasing range of the biasing member 422, and the mark may show the current pressing force, which corresponds to the position of the cam 434 within its follow-up range and the position of the biasing member 422 within its biasing range. Figure 7In the illustrated embodiment, the force adjustment gear corresponding to the segmented structure of the contour of the cam 434 (i.e., the contour segment) can be displayed on the knob 438, and the mark can show the current pressing force, which corresponds to the contour segment of the contact follower 436 of the cam 434.

[0109] According to some embodiments, the adjustment assembly 43 may further include a power unit (not shown), the power unit including a motor for driving the pivot 432 to pivot and an optional speed reduction device connected between the pivot 432 and the motor. On the one hand, the use of the power unit can facilitate automatic control of the force adjustment mechanism 42 and reduce the operator's operation. On the other hand, for example, Figure 6 In the embodiment, when adjusting the pressing force of the key in a continuously changing manner, controlling the pivoting amount of the pivot 432 by a motor can provide more precise pressing force adjustment.

[0110] The connecting member 424 can be supported on the base 12 in a pivotable manner. For example, two mounting seats can be provided, and the two ends of the connecting member 424 are respectively supported on the two mounting seats so that the connecting member 424 can pivot relative to the mounting seats. The mounting seats can be fixed to the base 12 by bolts, etc. The housing 430 of the adjustment assembly 43 can serve as a mounting seat.

[0111] According to some embodiments, the force adjustment mechanism 42 may further have a base 426, which may be configured to be fixed to the base 12 of the keyboard performance device 1, for example, fixed to the base 12 in a detachable manner by bolts or the like. In some embodiments, the connecting member 424 may be directly supported on the base 426, for example, support portions may be formed at both ends of the base 426, and the two ends of the connecting mechanism 424 are respectively supported on the support portions at both ends of the base 426. In other embodiments, the connecting member 424 may be connected to the base 426 by, for example, a support member 428, whereby the force adjustment mechanism 42 may be detachably mounted to the base 12 of the keyboard performance device 1 via the base 426. The base 426 may extend substantially parallel to the connecting member 424, such as Figure 4-5 The adjustment assembly 43 may be attached to the base 426 or may be disposed separately from the base 426 .

[0112] Before the force adjustment mechanism 42 is installed in the empty space 220 between the key 140 and the base 12, the force adjustment mechanism 42 can be assembled into an integral structure, that is, the connecting member 424 and the biasing member 422 can be supported on the base 426, the adjustment assembly 43 can be associated with the connecting member 424, and the adjustment assembly 43 can be attached to the base 426. In this way, when the force adjustment mechanism 42 is installed, it is only necessary to align the biasing member 422 with the part to be contacted on the key 140 (such as the stopper 210), and then fix the base 426 to the base 12 by fasteners such as bolts, so that the installation process is simple and easy to operate, and no additional changes to the keyboard performance device 1 are required.

[0113] Figure 8-11 A schematic diagram of a keyboard performance device 1 according to some embodiments of the present application is shown, wherein Figure 8 shows a perspective view of the keyboard performance device 1, Fig. 9 shows a cutaway perspective view of the keyboard performance device 1, Fig.10 shows a sectional top view of the keyboard performance device 1, Fig.11 A sectional side view of the keyboard performance device 1 is shown.

[0114] Figure 8-11 The keyboard performance device 1 of the embodiment shown is constructed in the same Figure 3-7 The embodiments shown are generally similar except for the adjustment assembly and the coupling member, and thus are similar to Figure 3-7 The same structure is not repeated here, and only the same Figure 3-7 Different parts.

[0115] The force adjustment mechanism 42 may include a biasing member 422 and a coupling member 424. The biasing member 422 abuts against the key 140 and applies a biasing force to the key 140 so as to adjust the pressing force of the key 140. The biasing member 422 is fixed to the coupling member 424. Figure 3-7 In the embodiment of the invention, the connecting member 424 is pivotally supported on the base 12, and the pivoting of the connecting member 424 drives the biasing member 422 to pivot, thereby changing the elastic deformation of the biasing member 422, and changing the biasing force of the biasing member 422 on the key 140, thereby adjusting the pressing force of the key. Figure 8-11 In the illustrated embodiment, the coupling member 424 is non-pivotable. In this embodiment, the biasing force of the biasing member 422 on the key 140 is changed by changing the length of the elastically deformed portion of the biasing member 422, thereby adjusting the pressing force of the key.

[0116] According to some embodiments of the present application, Fig.11As shown, the coupling member 424 is fixedly supported on the base 12, or the coupling member 424 is fixedly supported on the base 426, and the base 426 is fixed to the base 12. The force adjustment mechanism 42 includes an adjustment component 44, which may include a slider 442, which is located below the biasing member 422 and the coupling member 424, supported on the base 12 or the base 426 and can slide on the base 12 or the base 426. The top of the slider 442 supports the biasing member 422, so that the biasing member 422 is elastically deformed with the top of the slider 442 as a fulcrum under the action of the key 140. Through the sliding of the slider 442, the position on the biasing member 422 supported by the top of the slider 442 is changed, that is, the fulcrum position of the biasing member 422 is changed, thereby changing the elastic deformation of the biasing member 422 to change the biasing force applied by the biasing member 422 to the key 140, thereby adjusting the pressing force of the key.

[0117] The adjustment assembly 44 may further include a track 444 in which the slider 442 can slide. The track 444 may be provided on the base 12 or the pedestal 426, and the track 444 extends such that the slider 442 can slide on the track along a direction in which the biasing member 442 extends.

[0118] The adjustment assembly 44 may further include an actuating element 446, which is coupled to the slider 442 to drive the slider 442 to slide. Figure 8 As shown, the actuating element 446 can be located outside the keyboard performance device 1 so that the adjustment assembly 44 can be operated from the outside. For example, a slot is formed on the side plate 16, and the actuating element 446 passes through the slot and is connected to the slider 442. The actuating element 446 can move along the slot to drive the slider 442 to slide in the same direction. According to some embodiments, corresponding positions on the slot can be marked to indicate different corresponding pressing forces. When the actuating element 446 moves to a certain mark in the slot, the corresponding pressing force can be known.

[0119] Fig.12 A partial cross-sectional side view of a keyboard performance device 1 according to some embodiments of the present application is shown. The keyboard performance device 1 includes a force adjustment mechanism 50, which is configured to adjust the pressing force of the key 140 to meet the requirements of different players for the key pressing force as much as possible.

[0120] The force adjustment mechanism 50 includes an adjustment element 502, which can be configured to be associated with the force setting mechanism 30 to adjust the initial pressing force set by the force setting mechanism 30 by changing the biasing force applied by the force setting mechanism 30 to the key 140. Fig.12As shown, one end of the force setting mechanism 30 can be fixed to the key body 20 (such as the reset part 204), and the other end can be fixed to the adjusting element 502, so that the biasing force applied by the force setting mechanism 30 to the key 140 can be changed by the adjusting element 502.

[0121] In the illustrated embodiment, the adjusting element 502 may be in the form of a screw rod, which extends along the force setting mechanism 30. The force setting mechanism 30 may be in the form of a coil spring, through which the screw rod may extend. One end of the coil spring may be fixed to the key body 20, and the other end may be fixed to the screw rod. As the screw rod rotates, the screw rod may move along the direction in which the coil spring extends, for example, along the direction in which the coil spring extends. Fig.12 The initial pressing force set by the spiral spring is adjusted by moving the spiral spring in the up-down direction in the middle, thereby changing the stretched length of the spiral spring, thereby changing the biasing force applied by the spiral spring to the key 140. The change in pressing force can be read by the change in the length of the screw or the scale set on the screw.

[0122] The force adjustment mechanism 50 may further include a bracket 504, which may be fixed to the piano seat 22 or the base 12, and the adjustment element 502 is supported by the bracket 504. In the illustrated embodiment, the adjustment element 502 in the form of a screw is rotatably supported on the bracket 504, and a knob 506 may be provided on the end of the screw opposite to the coil spring, and the screw is rotated by the knob 506 to convert the rotational motion of the screw into linear motion.

[0123] Fig.13 A partial cross-sectional side view of a keyboard performance device 1 according to some embodiments of the present application is shown. The keyboard performance device 1 includes a force adjustment mechanism 52, which is configured to adjust the pressing force of the key 140 to meet the requirements of different players for the key pressing force as much as possible.

[0124] The force adjustment mechanism 52 includes an adjustment element 522, which can be configured to be associated with the force setting mechanism 30 to adjust the initial pressing force set by the force setting mechanism 30 by changing the biasing force applied by the force setting mechanism 30 to the key 140. Fig.13 As shown, one end of the force setting mechanism 30 can be fixed to the key body 20 (such as the reset part 204), and the other end can be fixed to the adjusting element 522, so that the biasing force applied by the force setting mechanism 30 to the key 140 can be changed by the adjusting element 522.

[0125] In the illustrated embodiment, the adjusting element 522 may be in the form of a gear and a rack, the rack may extend along the force setting mechanism 30, the force setting mechanism 30 may be in the form of a coil spring, the rack may extend through the coil spring, one end of the coil spring may be fixed to the key body 20, and the other end may be fixed to the rack. As the gear rotates, the rack can move along the direction in which the coil spring extends, for example, along Fig.13 The initial pressing force set by the coil spring is adjusted by moving the coil spring in the up-down direction, thereby changing the stretched length of the coil spring, thereby changing the biasing force applied by the coil spring to the key 140. The change in pressing force can be read by the change in the length of the rack or the scale set on the rack, or by the change in the angle of rotation of the gear or the scale set on the gear.

[0126] Fig.14 A partial cross-sectional side view of a keyboard performance device 1 according to some embodiments of the present application is shown. The keyboard performance device 1 includes a force adjustment mechanism 60, which is configured to adjust the pressing force of the key 140 to meet the requirements of different players for the key pressing force as much as possible.

[0127] The force adjustment mechanism 60 and Fig.11 The operating principle of the force adjustment mechanism 44 is basically similar, and the following only describes Fig.11 The difference between the force adjustment mechanism 44.

[0128] The force adjustment mechanism 60 includes a biasing member 602 and a slider 604. One end of the biasing member 602 is fixed to the piano seat 22, and the other end abuts against the key 140, for example, against the stopper 210 of the key 140. The slider 604 is located below the biasing member 602 and the piano seat 22, and can be supported on the base 12 and can slide on the base 12, for example, along the Fig.14 The arrows shown on both sides of the middle slider 604 slide left and right. The top of the slider 604 supports the biasing member 602, so that the biasing member 602 is elastically deformed with the top of the slider 604 as a fulcrum under the action of the key 140. By sliding the slider 604, the position of the biasing member 602 supported by the top of the slider 604 is changed, that is, the fulcrum position where the biasing member 602 is elastically deformed is changed, thereby changing the biasing force applied by the biasing member 602 to the key 140, thereby adjusting the pressing force of the key. The change in the pressing force can be read by the change in the position of the fulcrum, that is, the change in the position where the top of the slider 604 contacts the biasing member 602.

[0129] Since the biasing member 602 is fixed to the piano seat 22, Fig.14As shown, the biasing member 602 is fixed to the side of the saddle 22 facing the base 12, so there may be a certain gap between the end of the biasing member 602 and the stopper 210, resulting in the end of the biasing member 602 being unable to abut against the stopper 210. In this case, a connecting element 606 may be provided between the end of the biasing member 602 and the stopper 210, the connecting element 606 being fixed to the stopper 210, equivalent to an extension of the stopper 210, and the connecting element 606 abuts against the end of the biasing member 602, so that the biasing member 602 undergoes elastic deformation, so that the biasing member 602 applies a biasing force to the key 140.

[0130] Fig.15 A partial cross-sectional side view of a keyboard performance device 1 according to some embodiments of the present application is shown. The keyboard performance device 1 includes a force adjustment mechanism 62, which is configured to adjust the pressing force of the key 140 to meet the requirements of different players for the key pressing force as much as possible.

[0131] In the illustrated embodiment, the force adjustment mechanism 62 may include a support rod 622, an adjustment member 624, a spring 626, and a sleeve 628. One end of the support rod 622 abuts against the key 140, for example, against the stopper 210 of the key 140, so that when the key 140 is pressed, the support rod 622 can be pushed by the key 140 and move downward. The support rod 622 extends into the sleeve 628 and can reciprocate relative to the sleeve 628. The adjustment member 624 is provided with an external thread, and the sleeve 628 is provided with an internal thread. The external thread of the adjustment member 624 is engaged with the internal thread of the sleeve 628, so that the adjustment member 624 is engaged with the sleeve 628 and can move relative to the sleeve 628 through threaded engagement. The support rod 622 can extend through the adjustment member 624 and can reciprocate relative to the adjustment member 624, so that the reciprocating motion of the support rod 622 is guided by the adjustment member 624. The support rod 622 is provided with a stopper 623, which is located in the sleeve 628. When the key 140 is not pressed, the stopper 623 can abut against the inner end of the sleeve 628 to limit further movement of the support rod 622. The spring 626 is located in the sleeve 628 and is arranged between the stopper 623 of the support rod 622 and the end of the adjustment member 624, so that the spring 626 pushes the support rod 622 toward the key 140, for example, toward the limiter 210. It can be imagined by those skilled in the art that the spring 626 can also be arranged between the stopper 623 and the inner end of the sleeve 628 opposite to the stopper 623, or other structures for the spring 626 to abut against can also be arranged in the sleeve 628, such as a flange or protrusion extending from the inner wall of the sleeve 628.

[0132] When the key 140 is pressed, the spring pushes the support rod 622 toward the key 140, so the key 140 needs to overcome the force of the spring 626 to move downward, that is, there is a certain key pressing force. When the key 140 overcomes the force of the spring 626 and moves downward, the support rod 622 is pushed by the key 140 and moves downward along the sleeve 628, and the spring 626 is compressed, so that the pushing force of the support rod 622 is increased, and then the force of the support rod 622 on the key 140 is increased, that is, the key pressing force is increased.

[0133] The spring 626 is located between the stopper 623 of the support rod 622 and the end of the adjusting member 624. By changing the position of the end of the adjusting member 624, the length of the spring 626 can be changed, and then the pushing force applied by the spring 626 to the support rod 622 can be changed, so that the key pressing force can be adjusted. The adjusting member 624 is engaged with the sleeve 628 through threaded engagement. By rotating the adjusting member 624 relative to the sleeve 628, the position of the adjusting member 624 relative to the sleeve 628 can be changed. The adjusting member 624 can be provided with an operating portion 625, and the user can rotate the adjusting member 624 relative to the sleeve 628 through the operating portion 625, for example, by twisting the operating portion 625 to rotate the adjusting member 624. The operating portion 625 can be arranged outside the sleeve 628 to facilitate the operation of the operating portion 625.

[0134] According to some embodiments of the present application, the force adjustment mechanism may include a sensor configured to detect the magnitude of the bias force applied by the biasing member to the key, and then determine the pressing force of the key. The sensor may adopt any suitable sensor known in the art, such as a force sensor, a contact sensor, a piezoelectric ceramic, a proximity sensor, etc. The sensor may directly measure the magnitude of the bias force applied by the biasing member to the key, such as directly measuring the force applied by the biasing member through a force sensor, or the sensor may also detect the position of the biasing member to determine the magnitude of the bias force applied by the biasing member to the key. In the case of a power unit including, for example, a motor, the sensor may detect the operation of the power unit, such as detecting the rotation of the motor, thereby indirectly determining the magnitude of the bias force applied by the biasing member to the key.

[0135] According to some embodiments of the present application, the force adjustment mechanism may include a display device, which may be used to display relevant information detected by the sensor, such as the key pressing force corresponding to the magnitude of the bias force applied by the biasing member to the key, so as to provide an intuitive visual display for the user. The display device may be any suitable display device known in the art, such as a liquid crystal display, a display screen, a touch screen, etc.

[0136] The technical solutions of the present application have been described above with respect to different embodiments of the present application, but those skilled in the art will appreciate that the present application is not limited to the above embodiments, and those skilled in the art may make various modifications, changes and combinations to the above embodiments without departing from the scope of the present application.

[0137] For example, the keyboard performance device 1 according to the present application may include two force adjustment mechanisms, rather than just a single force adjustment mechanism. According to some embodiments of the present application, for example Figure 3-11 The force adjustment mechanism 42 shown, Fig.14 The force adjustment mechanism 60 shown or Fig.15 The force adjustment mechanism 62 shown can be used as the primary force adjustment mechanism, while Fig.12 The force adjustment mechanism 50 or Fig.13 The force adjustment mechanism 52 shown can be used as an additional force adjustment mechanism. The main force adjustment mechanism and the additional force adjustment mechanism can cooperate with each other to jointly complete the adjustment of the key pressing force, so that the key pressing force can be adjusted within a larger range and in a more precise manner.

[0138] Although the exemplary embodiments of the present application have been described, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present application without departing from the spirit and scope of the present application in essence. Therefore, all changes and modifications are included in the protection scope of the present application as defined by the claims. The present application is defined by the attached claims, and the equivalents of these claims are also included.

Claims

1. A force adjustment mechanism for adjusting the pressing force of a key of a keyboard performance device, characterized in that: The force adjustment mechanism comprises: a plurality of biasing members, each of the plurality of biasing members abutting against a key and applying a biasing force to the key; and a coupling member to which each of the plurality of biasing members is coupled; The coupling member and the plurality of biasing members are at least partially disposed in an empty space between a key and a base of the keyboard performance device, and the plurality of biasing members are configured to adjust the pressing force of the key by changing the biasing force applied to the key.

2. The force adjustment mechanism according to claim 1, characterized in that: The coupling member and the plurality of biasing members are detachably fixed to a base of the keyboard performance device.

3. The force adjustment mechanism according to claim 1 or 2, characterized in that: The biasing member is in the form of an elongated elastic element, one end of which abuts against the key and the other end is fixed to the coupling member.

4. A force adjustment mechanism according to any one of the preceding claims, characterized in that: The plurality of biasing members are arranged side by side in alignment with each other, forming a comb-like structure together with the coupling member.

5. A force adjustment mechanism according to any one of the preceding claims, characterized in that: Each of the plurality of biasing members abuts against a stopper of a key to apply a biasing force to the key.

6. A force adjustment mechanism according to any one of the preceding claims, characterized in that: The force adjustment mechanism also includes a base, on which the connecting member and the biasing member are supported, wherein the base is configured to be fixed to the base of the keyboard performance device, so that the force adjustment mechanism is fixed to the base of the keyboard performance device via the base and is installed on the base of the keyboard performance device as an integral structure.

7. A force adjustment mechanism according to any one of the preceding claims, characterized in that: The biasing member applies a biasing force to the key through elastic deformation, so that the biasing member is configured to adjust the pressing force of the key by changing the elastic deformation of the biasing member.

8. A force adjustment mechanism according to any one of the preceding claims, characterized in that: The connecting member is pivotally supported on the base of the keyboard playing device, wherein the pivotal movement of the connecting member causes the biasing member to rotate around the pivot axis of the connecting member, so that the elastic deformation of the biasing member changes, resulting in a change in the biasing force applied by the biasing member to the key.

9. A force adjustment mechanism according to any one of the preceding claims, characterized in that: The force adjustment mechanism further includes an adjustment component, and the adjustment component includes: a follower fixed to the coupling member; and a cam, the follower being configured to maintain contact with a contoured surface of the cam; The pivoting of the cam causes the follower to rotate around the pivot axis of the connecting member within a following range, and the rotation of the follower causes the pivoting movement of the connecting member, so that the cam is configured to adjust the pressing force of the key through the pivoting of the cam.

10. The force adjustment mechanism according to claim 9, characterized in that: The profile of the cam is continuously and gradually varied, so that the follower is configured to rotate in a continuously varying manner within its following range.

11. The force adjustment mechanism according to claim 9, characterized in that: The profile of the cam is segmented and consists of a plurality of profile segments, so that the follower is configured to rotate in a step-jump manner within its follower range.

12. The force adjustment mechanism according to claim 9, characterized in that: The adjustment assembly also includes a knob operatively coupled to the cam such that the knob is configured to cause pivoting of the cam by rotation of the knob.

13. The force adjustment mechanism according to claim 12, characterized in that: The knob is provided with a mark which indicates the position of the biasing member based on the position of the pivot of the cam to show the degree of depression of the key.

14. The force adjustment mechanism according to claim 9, characterized in that: The adjustment assembly further includes a power unit including a motor for driving the cam to pivot.

15. The force adjustment mechanism according to claim 1, characterized in that: The connecting member is supported on the base of the keyboard performance device in a fixed manner, wherein the biasing member is configured to change the length of the elastically deformed portion of the biasing member so that the elastic deformation of the biasing member changes, thereby causing the biasing force applied by the biasing member to the key to change.

16. The force adjustment mechanism according to claim 15, characterized in that: The force adjustment mechanism also includes an adjustment component, which includes a slider, the top of which supports the biasing member, so that the biasing member undergoes elastic deformation with the top of the slider as a fulcrum under the action of the key, wherein the slider is configured to change the position of the biasing member supported by the top of the slider through the sliding of the slider, so that the elastic deformation of the biasing member changes, resulting in a change in the biasing force applied by the biasing member to the key.

17. The force adjustment mechanism according to claim 16, characterized in that: The adjustment assembly also includes a track configured such that the slider slides within the track.

18. The force adjustment mechanism according to claim 16, characterized in that: The adjustment assembly further includes an actuating element coupled to the slider and configured to drive the slider to slide.

19. The force adjustment mechanism according to claim 1, characterized in that: One end of the biasing member is fixed to the base of the keyboard playing device, and the other end is against the key of the keyboard playing device, wherein the force adjustment mechanism also includes a slider, the top of the slider supports the biasing member, so that the biasing member undergoes elastic deformation with the top of the slider as a fulcrum under the action of the key, wherein the slider is configured to change the position of the biasing member supported by the top of the slider through the sliding of the slider, so that the elastic deformation of the biasing member changes, resulting in a change in the biasing force applied by the biasing member to the key.

20. The force adjustment mechanism according to claim 1, characterized in that: The biasing member includes a support rod and a spring, and the connecting member includes a sleeve, the support rod extends into the sleeve, and the spring is arranged in the sleeve, wherein the support rod is provided with a stopper, and the spring abuts against the stopper to push the support rod toward the key, thereby applying a biasing force to the key.

21. The force adjustment mechanism according to claim 20, characterized in that: The force adjustment mechanism also includes an adjustment member, which is engaged with the sleeve by a threaded connection and can move relative to the sleeve, and the spring abuts between the stopper and the end of the adjustment member, wherein the adjustment member is configured to change the biasing force applied by the spring to the key by changing the position of the adjustment member relative to the sleeve.

22. The force adjustment mechanism according to claim 1, characterized in that: The force adjustment mechanism further includes a sensor configured to detect a biasing force applied by the biasing member to the key.

23. The force adjustment mechanism according to claim 22, characterized in that: The force adjustment mechanism further includes a display device configured to display information related to the biasing force applied by the biasing member to the key detected by the sensor.

24. A key force device for setting and adjusting the pressing force of a key of a keyboard performance device, characterized in that: The key force device comprises: A force setting mechanism, wherein the force setting mechanism is fixed between the keys and the base of the keyboard performance device or between the keys and the seat of the keyboard performance device; and The force adjustment mechanism according to any one of claims 1 to 23, The force setting mechanism is configured to set the initial pressing force of the keys of the keyboard playing device, the force adjustment mechanism is configured to adjust the pressing force of the keys of the keyboard playing device, and the force setting mechanism and the force adjustment mechanism are configured to jointly limit the final pressing force of the keys of the keyboard playing device.

25. The key force device according to claim 24, characterized in that: The force setting mechanism is configured to apply a biasing force to the keys of the keyboard performance device to bias the keys of the keyboard performance device to an initial position or to bias the keys of the keyboard performance device toward the initial position.

26. The key force device according to claim 24, characterized in that: The key force device also includes an additional force adjustment mechanism, which is configured to be associated with the force setting mechanism to adjust the initial pressing force set by the force setting mechanism by changing the bias force applied by the force setting mechanism to the keys of the keyboard performance device.

27. The key force device according to claim 26, characterized in that: The additional force adjustment mechanism includes an adjustment element, one end of the force setting mechanism is fixed on the key of the keyboard performance device, and the other end is fixed to the adjustment element, wherein the adjustment element is configured to change the bias force applied by the force setting mechanism to the key of the keyboard performance device.

28. The key force device according to claim 27, characterized in that: The adjusting element is in the form of a screw, and the force setting mechanism is in the form of a coil spring, the screw extending through the coil spring, wherein one end of the coil spring is fixed to a key of a keyboard playing device, and the other end is fixed to the screw, and wherein the screw is configured to change the tensile length of the coil spring by rotating the screw, thereby changing the biasing force applied by the coil spring to the key of the keyboard playing device.

29. The key force device according to claim 27, characterized in that: The adjusting element is in the form of a gear and a rack, and the force setting mechanism is in the form of a coil spring, the rack extending through the coil spring, wherein one end of the coil spring is fixed to the key of the keyboard playing device, and the other end is fixed to the rack, and wherein the gear and rack are configured to change the tensile length of the coil spring by causing linear movement of the rack through the rotation of the gear, thereby changing the biasing force applied by the coil spring to the key of the keyboard playing device.

30. The key force device according to claim 24, characterized in that: The force setting mechanism and the force adjusting mechanism are structurally independent of each other.

31. A keyboard performance device, characterized in that: The keyboard performance device includes the velocity adjustment mechanism according to any one of claims 1 to 23.

32. A keyboard performance device, characterized in that: The keyboard performance apparatus comprises a key velocity device according to any one of claims 24 to 30.

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