CN104616638A

CN104616638A - Piano mechanical device

Info

Publication number: CN104616638A
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: 2015-05-13
Anticipated expiration: 2034-11-05
Also published as: CN104616638B; EP2869295B1; EP2869295A1; AT514688A4; AT514688B1

Abstract

The invention relates to a piano mechanical device comprising a plurality of keys (10). Each key controls a hammer (2). When the key (10) is operated, the hammer (10) knocks on a string (17) arranged vertically essentially. The key (10) is mechanically connected with an ejection rod (3). The ejection rod acts on a string pad (14) by utilization of an acting surface (3a). The hammer base pad (14) is arranged on a hammer base (1) connected with the hammer (2). The acting surface (3a) of the ejection rod (3) moves between the acting position and a release position along the hammer base pad (14). A first spring is arranged. The first spring carries out pretensioning of the ejection rod (3) towards the acting position according to the position of the hammer (2). Performing is improved through the following way: the first spring (5) interacts with the ejection rod (3) through a first roller (13).

Description

Piano mechanical hook-up

Technical field

The present invention relates to a kind of piano mechanical hook-up comprising multiple key according to claim 1 preamble.

Background technology

Key operates a hammerhead respectively, when operating key, hammerhead knocks on the string of perpendicular setting, key and push rod are mechanically connected, described push rod acts on hammerhead seat cushion by acting surface, this hammerhead seat cushion is arranged on the hammerhead seat that is connected with hammerhead, the acting surface of push rod is movable between active position and off-position along hammerhead seat cushion, and arranges the first spring, this first spring according to the position of hammerhead to the pre-tensioner push rod in active position direction.

Generally speaking, piano mechanical hook-up and grand piano mechanical hook-up similar, but difference is, the string of piano is vertically arranged and therefore not in contrast to Action of Gravity Field to operate hammerhead.Therefore, after push rod release especially hammerhead to leave the motion of string different from common grand piano mechanical hook-up, the i.e. motion of so-called Anglicism hammered string instrument.

Above-mentioned difference especially causes double hit poor compared with grand piano, namely knocks the possibility of same key fast successively.Especially require that key almost can rise to starting point, again again can successfully knock this key when again knocking at every turn at this.

Although exist and specifically favourablely knock situation, wherein can earlier again knock, this situation is also indefinite controlled and be therefore random.

CN 201 725 549U discloses a kind of piano mechanical hook-up, can partly overcome described shortcoming wherein.Continued pre-tensioner in active position by a spring at this push rod, this spring is fixed on and coordinates on catcher bar.Thus, again push rod is sent into active position from off-position in advance after the upward movement of key starts, thus also earlier again can knock key.The shortcoming of this solution is, what change key based on the friction occurred in this system knocks performance, and thus many pianists think that the performance of this piano is unsatisfactory.

DE 36 05 155C illustrates a kind of piano mechanical hook-up, and wherein on cooperation catcher, be namely provided with a roller with being fixedly connected with hammerhead, this roller is pressed onto according to hammerhead and the position of push rod on the double hit spring that is fixedly connected with push rod.Therefore torque and being simultaneously pressed in active position by push rod is applied along knocking direction to hammerhead.Roller is in the installation relative complex coordinated on catcher and be difficult in practice be installed in existing hammered string instrument.Also must arrange spring on push rod in addition, this spring further increases complexity for this reason.In addition, regulate difficulty very large, playing function can be made completely out of hand, this is because the function of hammered string instrument depends primarily on this component because spring changes to a little position of knocking direction.

Summary of the invention

Task of the present invention is to overcome above-mentioned shortcoming and proposes a kind of mechanical hook-up for piano, and this mechanical hook-up allows fast and double hit reliably, but to knock performance similar with grand piano as far as possible simultaneously.In addition, the simple as far as possible structure of one should be proposed.

According to the present invention, described task is solved by the feature of claim 1, that is, described first spring to be fixed on hammerhead seat and to be supported with the first roller, and this first roller and push rod interact.

The present invention is based on following understanding: force when hammer motion relative motion occurs between the end and push rod of the first spring based on kinematics characteristic.This relative motion is responsible for the change of the condition of knocking based on the friction force caused thus.Friction force is significantly reduced, because roller can roll on push rod by solution according to the present invention.The resistance that theres is provided when knocking of key is very similar to the resistance of grand piano in this way.

Another effect according to the solution of the present invention is, hammerhead passes through the roller supporting on the first spring after knocking.Therefore when touching, the first spring replaces catcher.When heavier knocking, the hammerhead device that is captured as in Anglicism hammered string instrument catches, but once release key, and hammerhead is slightly towards string motion and push rod can arrive in working position again.Therefore, when touching, hammerhead to remain in reached end position and not towards the motion of string direction, thus push rod can return in initial position immediately.When thumping, this carries out after release key.

In the case importantly, above-mentioned effect is very similar to the effect of grand piano mechanical hook-up.In grand piano mechanical hook-up, hammerhead remains on gangbar supporting leg after touching and catcher is therefore inoperative.When thumping, by the tensioning of gangbar supporting leg, and push rod is captured, device catches gangbar spring.When discharging key, so hammerhead is towards string motion, therefore push rod can act on again.

Not only in piano striking machine according to the present invention but also in struck string machine for grand piano, this effect accurately limits by correctly regulating corresponding spring, to avoid undesirable epiphenomenon, if hammerhead is toward restriking string.

Above-mentioned effect makes hammered string instrument according to the present invention very similar to grand piano mechanical hook-up in the meaning of the property played.

Another advantageous effects of the present invention is, also can abandon push rod impingement plate (Stosszungenprallleiste) if desired.

According to the present invention, the first spring is fixed on hammerhead seat.This can realize simple especially structure and allow to be installed on existing hammered string instrument.Can realize relative large diameter by the type of spring, position with length, this brings the function of stabilizer pole and realizes relative to external action, insensitivity as adjustment means.Therefore, spring is stable relative to environmental impact and even allows when damaging or lack of proper care to continue normal performance.

The position of spring, size and characteristic produce little spring travel and therefore can not adversely affect plays sensation, and that is spring force does not significantly increase.

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

The particularly advantageous scheme of one according to the present invention, the first spring construction is volute spring.This achieve compact structure mode.

When being connected with a spring leg on volute spring, when this spring leg supports the first roller, realize simple controllability.

Particularly advantageously, the first roller lifted from push rod before push rod is released when part knocks key.Thus, in the regional area of hammer motion track, can completely disappear relevant to spring of rubbing.

The particularly advantageous scheme of another kind of the present invention arranges catcher, and this catcher arranges the second spring, and described second spring is to the direction pre-tensioned fit catcher making hammerhead leave string.Realize thus controlling hammerhead better.

Accompanying drawing explanation

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

Fig. 1 be in rest position according to hammered string instrument of the present invention;

Fig. 2 is the hammered string instrument of Fig. 1 and key is partly knocked;

Fig. 3 is the hammered string instrument of Fig. 1 and key is knocked completely;

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

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

Embodiment

The piano mechanical hook-up of Fig. 1 comprises key 10, and this key acts on gangbar 4 by key fore-set 16 and this gangbar is lifted when operating key 10.The Movement transmit of gangbar 4 is on push rod 3, and push rod end has acting surface 3a thereon, and this acting surface is configured to and hammerhead seat cushion 14 acting in conjunction.Hammerhead seat cushion 14 to be arranged on hammerhead seat 1 and to have bending applying face from push rod collision pad 11, this applying surface construction is used for first receiving the upward movement of push rod 3 and the rotational motion being converted into hammerhead seat 1, namely so for a long time, until the release lever 15 of push rod 3 to collide on button release 19 and push rod 3 by pressure from push rod collision pad 11.From at the moment, acting surface 3a slippage on hammerhead seat cushion 14 of push rod 3, thus no longer includes torque and is applied on hammerhead seat 1 along the counter clockwise direction in Fig. 1.Even if this makes hammerhead 2 still can leave from string 17 motion by during key 10 under continuation after hitting string.

Damper head 18 is also controlled by gangbar 4 as common in piano mechanical hook-up.

Piano mechanical hook-up shown in Figure 2 is in position when release lever 15 to collide on button release 19.

Fig. 3 illustrates the position of piano mechanical hook-up after push rod 3 just discharges, wherein, realizing also entering this position when hammerhead 2 knocks string 17.

In order to realize quick double hit, from the position of Fig. 3, push rod 3 needs again to turn back in initial position as early as possible, and in this initial position, push rod abuts on push rod collision pad 11, thus hammerhead 2 can move to string 17 again.This is realized by the first spring 5, and this first spring has the first roller 13, first roller on its end in push rod 3 side action in the region of acting surface 3a.

From accompanying drawing, in the position of Fig. 1 and Fig. 3, roller 13 is actual to be abutted on push rod 3 and can apply power to push rod.But based on the rotational motion of hammerhead seat 1, roller 13 lifts from push rod 3 soon and just again contacts with it after push rod release after operation key 10.

Component-Based Development kinematics, the direction of motion of roller 13 has minimum acute angle relative to the side of push rod 3.Therefore the first spring 5 is only applied only relatively little thrust, under thus hammer motion is in control well by tensioning a little along knocking direction.

Catcher 8 is provided with the second spring 12, this second spring by cooperation catcher 7 to pressing down and therefore making hammerhead 2 press from string 17.Catcher 7 is coordinated to be fixed on hammerhead seat 1 by brake rod 6 as common.

Fig. 4 and Fig. 5 is shown specifically the structure of the first spring 5.Fixing section 5d is connected with volute spring 5a.Stretch out a spring leg 5b from this volute spring, the end of this spring leg arranges the axis 5c being used for the first roller 13.

The present invention allows to realize piano can more fast and reliably double hit, and this piano has simple structure and is similar to the property played of grand piano.

Claims

1. comprise the piano mechanical hook-up of multiple key (10), described key operates a hammerhead (2) respectively, when operating key (10), hammerhead knocks on the string (17) of perpendicular setting, key (10) and push rod (3) are mechanically connected, described push rod acts on hammerhead seat cushion (14) by acting surface (3a), this hammerhead seat cushion is arranged on the hammerhead seat (1) that is connected with hammerhead (2), the acting surface (3a) of push rod (3) is movable between active position and off-position along hammerhead seat cushion (14), and the first spring (5) is set, this first spring according to the position of hammerhead (2) by pre-tensioner to active position direction for push rod (3), it is characterized in that, described first spring (5) is fixed on hammerhead seat (1) and goes up and support the first roller (13), this first roller and push rod (3) interact.

2. piano mechanical hook-up according to claim 1, is characterized in that, described first roller (13) acts in the region of acting surface (3a) of push rod (3).

3. according to the piano mechanical hook-up of claim 1 or 2, it is characterized in that, described first spring (5) is configured to volute spring.

4. piano mechanical hook-up according to claim 3, is characterized in that, described volute spring is connected with a spring leg (5b), and this spring leg supports the first roller (13).

5. according to the piano mechanical hook-up of one of Claims 1-4, it is characterized in that, described first roller (13) was lifted from push rod (3) before push rod (3) is released when part knocks key (10).

6. according to the piano mechanical hook-up of one of claim 1 to 5, it is characterized in that, catcher (8) is set, this catcher arranges the second spring (12), and described second spring will coordinate catcher (7) pre-tensioner to making hammerhead (2) leave the direction of string (17).