CN104616638B

CN104616638B - Piano mechanical device

Info

Publication number: CN104616638B
Application number: CN201410616363.8A
Authority: CN
Inventors: 安纳司·毕德内; 白琳; 乌多·卡姆; 扎比内·卡姆
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-05
Filing date: 2014-11-05
Publication date: 2018-03-02
Anticipated expiration: 2034-11-05
Also published as: EP2869295A1; AT514688B1; EP2869295B1; CN104616638A; AT514688A4

Abstract

The present invention relates to the piano mechanical device that one kind includes multiple keys (10), the key operates a hammerhead (2) respectively, when operating key (10), hammerhead is tapped on the string (17) substantially vertically set, key (10) mechanically connects with push rod (3), the push rod acts on hammerhead seat cushion (14) by acting surface (3a), the hammerhead seat cushion is arranged on the hammerhead seat (1) being connected with hammerhead (2), the acting surface (3a) of push rod (3) moves along hammerhead seat cushion (14) between active position and off-position, and the first spring is set, first spring is pre-tensioner to active position direction by push rod (3) according to the position of hammerhead (2).The property played is improved by following manner：First spring (5) is interacted by the first roller (13) and push rod (3).

Description

Piano mechanical device

Technical field

The present invention relates to a kind of piano mechanical device including multiple keys.

Background technology

Key operates a hammerhead respectively, and when operating key, hammerhead is tapped on the string substantially vertically set, qin Key mechanically connects with push rod, and the push rod acts on hammerhead seat cushion by acting surface, and the hammerhead seat cushion is arranged on to be connected with hammerhead Hammerhead seat on, the acting surface of push rod along hammerhead seat cushion between active position and off-position it is movable, and set first Spring, first spring is according to the position of hammerhead to the pre-tensioner push rod in active position direction.

Generally speaking, piano mechanical device is similar with grand piano mechanical device, but difference is that the string of piano is vertical Set and therefore operate hammerhead not in contrast to Action of Gravity Field.Therefore, especially hammerhead leaves string after push rod release Motion it is different from the motion of common grand piano mechanical device, i.e. so-called Anglicism hammered string instrument.

Above-mentioned difference especially causes poor double hit compared with grand piano, i.e., it is quick tap same key successively can Can property.Especially require that key can almost rise to starting point again when tapping again every time herein, so as to again Successfully tap the key.

Although specific favourable percussion situation be present, wherein can be tapped again earlier, such case is simultaneously It is indefinite controllable and be therefore random.

The U of CN 201 725 549 disclose a kind of piano mechanical device, can partly overcome the shortcoming wherein.Herein By a spring by persistently pre-tensioner into active position, the spring is fixed on to be coordinated on catcher bar push rod.Thus, in qin Push rod is sent into active position by the ascending motion of key from off-position again in advance after starting, thus can also be weighed earlier It is new to tap key.The shortcomings that solution, is, the percussion performance of key is changed based on the friction occurred in the system, because And many pianists think that the performance of this piano is unsatisfactory.

The C of DE 36 05 155 show a kind of piano mechanical device, wherein fixing company on catcher is coordinated, i.e. with hammerhead Ground connection is provided with a roller, and the roller is pressed onto on the double hit spring being fixedly connected with push rod according to the position of hammerhead and push rod. Therefore torque is applied while push rod is pressed into active position along percussion direction to hammerhead.Roller is on catcher is coordinated Install relative complex and be difficult to be installed in existing hammered string instrument in practice.Bullet must also be set on push rod for this in addition Spring, the spring further increase complexity.In addition, regulation difficulty is very big, because spring changes to a little position for tapping direction Change can make playing function completely out of hand, because the function of hammered string instrument depends primarily on the component.

The content of the invention

The task of the present invention is to overcome disadvantages mentioned above and proposes a kind of mechanical device for piano, the mechanical device Allow double hit rapidly and reliably, but it is as similar with grand piano as possible to tap performance simultaneously.In addition, one kind should be proposed as far as possible Simple structure.

According to the present invention, the task is solved by favourable feature, i.e. first spring is fixed on hammerhead seat And the first roller is supported with, first roller interacts with push rod.

The present invention is based on the following recognition：Based on kinematics characteristic in hammer motion the end of the first spring and push rod it Between force occur relative motion.The change of percussion condition is responsible in the relative motion based on thus caused frictional force.Pass through basis The solution of the present invention significantly reduces frictional force, because roller can roll on push rod.Key exists in this way The resistance and the resistance of grand piano provided during percussion is very much like.

According to the solution of the present invention further effect is that, hammerhead passes through the roller branch on the first spring after percussion Support.Therefore in touch, the first spring replaces catcher.In heavier percussion, hammerhead is as in Anglicism hammered string instrument The device that is captured is caught, but once discharges key, and hammerhead is moved slightly toward string and push rod can arrive again at operating position In.Therefore, in touch, hammerhead is maintained in reached end position and moved not towards string direction, so as to which push rod can Back within immediately in initial position.In bang, this is carried out after key is discharged.

In the case importantly, the effect above very much similar to grand piano mechanical device effect.In triangular steel In qin mechanical device, hammerhead is maintained at after touch on gangbar supporting leg and therefore catcher does not work.Join in bang Lever spring is tensioned by gangbar supporting leg and push rod is captured, and device is caught.When discharging key, hammerhead is in being directed towards qin String moves, therefore push rod can act on again.

Not only in the piano striking machine according to the present invention but also in struck string machine for grand piano, the effect can be by correct Ground adjusts corresponding spring accurately to limit, and to avoid undesirable epiphenomenon, such as hammerhead is past restrikes string.

The effect above cause according to the present invention hammered string instrument play property meaning in grand piano mechanical device extremely It is similar.

The present invention it is another advantageous effect reside in that, can also abandon push rod impingement plate if necessary (Stosszungenprallleiste)。

According to the present invention, the first spring is fixed on hammerhead seat.This can realize particularly simple structure and allow to install additional On existing hammered string instrument.Relatively large diameter can be realized by the type of spring, position and length, this brings the function of stabilizer pole And realize the insensitivity for relative to external action, such as adjusting instrument.Therefore, spring relative to environment influence be it is stable and And even allow to continue in the case of damage or imbalance normally to play.

Position, size and the characteristic of spring, which produce small spring travel and therefore can not adversely influence to play, to be felt, That is spring force does not increase significantly.

Kinematically particularly advantageously, the first roller is acted in the acting surface region of push rod.

According to a kind of particularly advantageous scheme of the present invention, the first spring is configured to helical spring.This realizes compact Frame mode.

When being connected with a spring leg on helical spring, when the spring leg supports the first roller, realize simple adjustable Section property.

Particularly advantageously, the first roller lifts when part taps key before push rod is released from push rod.By This, in the regional area of hammer motion track, friction is related to spring to be wholly absent.

Another particularly advantageous scheme of the present invention sets catcher, and second spring is set on the catcher, described Second spring is to the direction pre-tensioned fit catcher for making hammerhead leave string.It is achieved in better controling over hammerhead.

Brief description of the drawings

Below the present invention is described in detail by embodiment shown in accompanying drawing.Accompanying drawing is as follows：

Fig. 1 is the hammered string instrument according to the present invention in resting position；

Fig. 2 is Fig. 1 hammered string instrument and key is partly tapped；

Fig. 3 is Fig. 1 hammered string instrument and key is tapped completely；

Fig. 4 is the details top view of the first spring；

Fig. 5 is the side view of the first spring.

Embodiment

Fig. 1 piano mechanical device includes key 10, and the key acts on gangbar 4 and the connection by key fore-set 16 Lever is lifted when operating key 10.The motion of gangbar 4 is delivered on push rod 3, and push rod has acting surface on its upper end 3a, the acting surface are configured to and the collective effect of hammerhead seat cushion 14.Hammerhead seat cushion 14 is arranged on hammerhead seat 1 and touched from push rod 11 application faces with bending of pad are hit, the application surface construction is used to receive the ascending motion of push rod 3 first and is converted For the rotational motion of hammerhead seat 1, i.e., so long, until the release lever 15 of push rod 3 is collided on button release 19 and push rod 3 is pressed Pad 11 is collided from push rod.From this moment on, the acting surface 3a of push rod 3 slides on hammerhead seat cushion 14, thus there is no torque edge Counter clockwise direction in Fig. 1 is applied on hammerhead seat 1.This cause hammerhead 2 after hitting string when under continuing by key 10 It can still be moved from from string 17.

Damper head 18 controls as common in piano mechanical device also by gangbar 4.

Release lever 15, which is in, figure 2 illustrates piano mechanical device collides position when 19 on button release.

Fig. 3 shows position of the piano mechanical device after push rod 3 just discharges, wherein, realizing the percussion string of hammerhead 2 Also the position is entered when 17.

In order to realize quick double hit, push rod 3 needs to again return in initial position as early as possible from Fig. 3 position, at this Push rod is abutted on push rod collision pad 11 in initial position, so as to which hammerhead 2 can move to string 17 again.This passes through the first bullet Spring 5 realizes that first spring has the first roller 13 on its end, and the first roller is in the side action of push rod 3 in acting surface 3a Region in.

From accompanying drawing, in Fig. 1 and Fig. 3 position, roller 13 is actually abutted on push rod 3 and can applied to push rod Power.But based on the rotational motion of hammerhead seat 1, roller 13 lifts and in push rod from push rod 3 soon after key 10 is operated Just contacted again with it after release.

Component- Based Development kinematics, the direction of motion of roller 13 have minimum acute angle relative to the side of push rod 3.Therefore the One spring 5 is only somewhat tensioned and applies only relatively small thrust along direction is tapped, thus hammer motion is in well under control Under system.

Second spring 12 is installed on catcher 8, the second spring will coordinate catcher 7 to be pressed downward and therefore make string Mallet 2 is pressed from string 17.Catcher 7 is coordinated to be fixed on as common by brake bar 6 on hammerhead seat 1.

Fig. 4 and Fig. 5 is shown specifically the structure of the first spring 5.Helical spring 5a is connected with fixing section 5d.From the spiral shell Revolve spring and stretch out a spring leg 5b, the axis 5c of the first roller 13 is provided on the end of the spring leg.

The present invention allows for piano can more rapidly and reliably double hit, and the piano has simple structure and similar In the property played of grand piano.

Claims

1. including the piano mechanical device of multiple keys (10), the key operates a hammerhead (2) respectively, in operation key (10) when, hammerhead is tapped on the string (17) substantially vertically set, and key (10) mechanically connects with push rod (3), the top Bar acts on hammerhead seat cushion (14) by acting surface (3a), and the hammerhead seat cushion is arranged on the hammerhead seat (1) being connected with hammerhead (2) On, the acting surface (3a) of push rod (3) along hammerhead seat cushion (14) between active position and off-position it is movable, and set the One spring (5), first spring is pre-tensioner to active position direction by push rod (3) according to the position of hammerhead (2), and its feature exists In first spring (5) is fixed on hammerhead seat (1) and supports the first roller (13), first roller and push rod (3) phase Interaction.

2. piano mechanical device according to claim 1, it is characterised in that first roller (13) acts on push rod (3) in the region of acting surface (3a).

3. piano mechanical device according to claim 1 or 2, it is characterised in that first spring (5) is configured to spiral Spring.

4. piano mechanical device according to claim 3 a, it is characterised in that bullet is connected with the helical spring Spring leg (5b), the spring leg support the first roller (13).

5. piano mechanical device according to claim 1 or 2, it is characterised in that first roller (13) is partly being struck Lifted when hitting key (10) before push rod (3) is released from push rod (3).

6. piano mechanical device according to claim 1 or 2, it is characterised in that catcher (8) is set, in the catcher It is upper setting second spring (12), the second spring will coordinate catcher (7) to make hammerhead (2) leave string (17) direction it is pre- Tensioning.