CN210110313U - Magnetic force reset system of upright piano action - Google Patents
Magnetic force reset system of upright piano action Download PDFInfo
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- CN210110313U CN210110313U CN201920641572.6U CN201920641572U CN210110313U CN 210110313 U CN210110313 U CN 210110313U CN 201920641572 U CN201920641572 U CN 201920641572U CN 210110313 U CN210110313 U CN 210110313U
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Abstract
A magnetic force resetting system of a string striking machine of an upright piano comprises a linkage rod, a top rod and a wood supporting rod, wherein the linkage rod is sequentially provided with a spoon nail, a linkage rod shaft bracket, a top rod shaft bracket, a wood supporting rod and a climbing belt hook; the spoon nail is vertically and fixedly connected with the linkage rod; the linkage rod shaft bracket is hinged with the linkage rod; the ejector rod shaft bracket is vertically and fixedly connected with the linkage rod, the other end of the ejector rod shaft bracket is hinged with the ejector rod, a first magnet is fixed at the bottom of the ejector rod, a second magnet is arranged at the bottom of the first magnet, and the second magnet is arranged at the position, opposite to the first magnet, of the linkage rod; the wood supporting rod is obliquely and fixedly connected with the linkage rod, a wood supporting is fixed to the other end of the wood supporting rod, and a wood supporting felt is connected to the wood supporting rod; the climbing belt hook is obliquely and fixedly connected with the linkage rod. The utility model discloses simple structure, not fragile, magnetic force resetting means life is unanimous basically with the piano.
Description
Technical Field
The utility model relates to a musical instrument technical field, in particular to vertical piano string striking machine magnetic force reset system.
Background
The piano is deeply loved by the great masses of music enthusiasts by the unique broad range, beautiful timbre and unique performance, so the piano is well known as the king of the musical instrument. Along with the development of the society, the market demand of upright pianos is more and more, and the excellent of the performance of the action machine, as the core part of the piano, directly influences the musical expression of the piano, and a high-quality action machine, besides the design requirements, also requires that the piano has stable quality and is durable in use for a long time. The traditional string striking machine linkage device adopts a mandril spring as a reset device, but the problem that the elasticity of the mandril spring is insufficient easily occurs after the piano is used for many years, and the elasticity adjustment and repair are needed to ensure that the reset action of the mandril is faster so as to improve the speed and the efficiency of key striking of the piano, but the force of the spring picked in the adjustment and repair process is not easy to control, and if the force picked is unbalanced, the phenomenon of different resistances possibly occurs to each key, so that the uneven key touch of the piano is caused; meanwhile, if the force is too large in the adjusting and repairing process, the excessive stretching height of the spring is too large, and the spring cannot be shortened, so that great difficulty is brought to fine piano adjustment; if the ejector rod spring has noise problems, the ejector rod spring needs to be replaced, but the springs used by pianos of different brands and models are different in size, and the replacement of the springs to be completely consistent is still difficult.
Chinese utility model patent application no: 201620933601.2, the utility model discloses a piano action linkage, the ejector pin of action linkage adopts the form of adjustable length, though can be used for the different pianos of specification to finely tune to make the transmission effect of power on the ejector pin better, but it does not fundamentally solve the problem of elasticity, can't guarantee the life of ejector pin spring.
Chinese utility model patent application no: 201720840905.9, in the utility model patent entitled "a piano string striking machine linkage", a piano string striking machine linkage is disclosed, the ejector pin bottom of the string striking machine linkage is added with an oil injection pipe, the weight of how much control ejector pin through controlling injected silicone oil controls the hand feeling of piano keys, although the problem of different hand feeling habits of different piano users can be solved, the oil injection amount is not easy to control, and if excessive silicone oil is injected, the readjustment cannot be carried out.
SUMMERY OF THE UTILITY MODEL
The aforesaid is not enough among the prior art, the utility model provides an upright piano action magnetic force reset system, its simple structure, convenient popularization.
In order to achieve the above object, the utility model adopts the following technical scheme:
a magnetic force resetting system of a string striking machine of an upright piano comprises a linkage rod, a top rod and a wood supporting rod, wherein the linkage rod is sequentially provided with a spoon nail, a linkage rod shaft bracket, a top rod shaft bracket, a wood supporting rod and a climbing belt hook;
the spoon nail is vertically and fixedly connected with the linkage rod;
the linkage rod shaft bracket is hinged with the linkage rod;
the ejector rod shaft bracket is vertically and fixedly connected with the linkage rod, the other end of the ejector rod shaft bracket is hinged with the ejector rod, a first magnet is fixed at the bottom of the ejector rod, a second magnet is arranged at the bottom of the first magnet, and the second magnet is arranged at a position opposite to the first magnet and the linkage rod;
the wood supporting rod is obliquely and fixedly connected with the linkage rod, a wood supporting is fixed to the other end of the wood supporting rod, and a wood supporting felt is connected to the wood supporting rod;
the climbing belt hook is obliquely and fixedly connected with the linkage rod.
Preferably, the ejector rod is of an L-shaped structure.
Preferably, the first magnet and the second magnet are arranged opposite to each other in the same pole.
Preferably, the first magnet and the second magnet are identical in shape and size.
Preferably, the first magnet and the second magnet are both N35 magnets with the diameter of 2mm and the thickness of 2 mm.
Preferably, the wood supporting rod is parallel to the bridle belt hook position.
The utility model has the advantages that:
through the magnetic force resetting device, the string striking machine linkage in the piano can avoid the problems of insufficient elasticity of the ejector rod spring or maintenance damage, and the weakening speed of the magnetic force of the magnet is very low and basically consistent with the service life of the piano, so that the resetting system adopting the magnetic force device can keep uniform and stable mechanical efficiency for a long time. Simultaneously if need adjust the key touch, can install electromagnetic means on this device's basis, adjust the magnetic force intensity through the size of control resistance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a view showing the structure of a piano action linkage;
FIG. 2 is an enlarged view of a portion of the magnetic reset system;
1-linkage rod, 2-ejector rod, 3-wood supporting rod, 4-spoon nail, 5-linkage rod shaft bracket, 6-ejector rod shaft bracket, 7-climbing belt hook, 8-wood supporting, 9-wood supporting felt, 10-magnetic force resetting system, 101-magnet I, 102-magnet II.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention easier to be clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
As shown in figure 1, the magnetic force resetting system of the string striking machine of the upright piano comprises a linkage rod 1, a mandril 2 and a wood supporting rod 3, wherein a spoon nail 4, a linkage rod shaft bracket 5, a mandril shaft bracket 6, a wood supporting rod 3 and a climbing belt hook 7 are sequentially arranged on the linkage rod 1; the spoon nail 4 is vertically and fixedly connected with the linkage rod 1; the linkage rod shaft bracket 5 is hinged with the linkage rod 1; the ejector rod shaft bracket 6 is vertically and fixedly connected with the linkage rod 1, the other end of the ejector rod shaft bracket 6 is hinged with an ejector rod 2, and the bottom of the ejector rod 2 is fixed with a magnet I101; the bottom of the first magnet 101 is provided with a second magnet 102, and the second magnet 102 is arranged at a position opposite to the first magnet 101 of the linkage rod 1; the wood supporting rod 3 is fixedly connected with the linkage rod 1 in an inclined mode, a wood supporting 8 is fixed to the other end of the wood supporting rod 3, and a wood supporting felt 9 is connected to the wood supporting 8; the climbing belt hook 7 is fixedly connected with the linkage rod 1 in an inclined mode.
In this embodiment, the top bar 2 is an "L" shaped structure.
In this embodiment, the same poles of the first magnet 101 and the second magnet 102 are opposite to each other, that is, the S pole of the first magnet 101 corresponds to the S pole of the second magnet 102, or the N pole of the first magnet 101 corresponds to the N pole of the second magnet 102.
In this embodiment, the first magnet 101 and the second magnet 102 are both N35 magnets with a diameter of 2mm and a thickness of 2mm, and according to the formula for calculating the magnetic force of the magnets: the magnet volume x density x 600 (multiple) is suction force, in this embodiment, N35 magnet is used, Br is 12700Gauss, diameter is 2mm, thickness is 2mm, and the calculated magnetic field strength Bp is 2556Gauss, which is enough to make the mandril 2 play a role of resetting during the movement.
In this embodiment, the wood-supporting rod 3 is parallel to the climbing belt hook 7.
The working principle is as follows:
the spring of the ejector rod 2 in the string striking machine linkage device is optimized to be a magnetic force reset device, the key reset function is achieved by utilizing the principle that homopolarity of magnets repel each other, homopolarity of the magnets I101 and the magnets II 102 are oppositely arranged, repulsive magnetic force is generated between the magnets I101 and the magnets II 102, the magnetic force acts on the linkage rod 1 and the ejector rod 2 and then reacts on touch of fingers, so that the key reset function can be achieved, resistance of keys can be uniformly controlled, weakening of the magnetic force of the magnets is very slow, the service life of the magnets is basically consistent with that of a piano, and the reset system adopting the magnetic force device can keep uniform and stable mechanical efficiency for a long time.
The utility model discloses simple structure, convenient preparation, the problem of avoiding 2 spring elastic of ejector pin that can be fine not enough or the maintenance damage makes the key sense of touch even, and magnetic force resetting means is not fragile, life and piano basic unanimity.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a vertical piano action magnetic force reset system, includes gangbar, ejector pin, holds in the palm the wooden pole, its characterized in that: the linkage rod is sequentially provided with a spoon nail, a linkage rod shaft frame, a mandril shaft frame, a wood supporting rod and a climbing belt hook;
the spoon nail is vertically and fixedly connected with the linkage rod;
the linkage rod shaft bracket is hinged with the linkage rod;
the ejector rod shaft bracket is vertically and fixedly connected with the linkage rod, the other end of the ejector rod shaft bracket is hinged with the ejector rod, a first magnet is fixed at the bottom of the ejector rod, a second magnet is arranged at the bottom of the first magnet, and the second magnet is arranged at the position, opposite to the first magnet, of the linkage rod;
the wood supporting rod is obliquely and fixedly connected with the linkage rod, a wood supporting is fixed to the other end of the wood supporting rod, and a wood supporting felt is connected to the wood supporting rod;
the climbing belt hook is obliquely and fixedly connected with the linkage rod.
2. The magnetic force resetting system for the action of the upright piano according to claim 1, wherein: the ejector rod is of an L-shaped structure.
3. The magnetic force resetting system for the action of the upright piano according to claim 1, wherein: the homopolar of the first magnet and the homopolar of the second magnet are arranged oppositely.
4. The magnetic force resetting system for the action of the upright piano according to claim 1, wherein: the shape and the size of the first magnet and the second magnet are the same.
5. The magnetic force resetting system for the action of the upright piano according to claim 1, wherein: the first magnet and the second magnet are both N35 magnets with the diameter of 2mm and the thickness of 2 mm.
6. The magnetic force resetting system for the action of the upright piano according to claim 1, wherein: the wood supporting rod is arranged in parallel with the bridle belt hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920641572.6U CN210110313U (en) | 2019-05-07 | 2019-05-07 | Magnetic force reset system of upright piano action |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920641572.6U CN210110313U (en) | 2019-05-07 | 2019-05-07 | Magnetic force reset system of upright piano action |
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| Publication Number | Publication Date |
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| CN210110313U true CN210110313U (en) | 2020-02-21 |
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| CN201920641572.6U Active CN210110313U (en) | 2019-05-07 | 2019-05-07 | Magnetic force reset system of upright piano action |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085196A (en) * | 2019-05-07 | 2019-08-02 | 郝一男 | A kind of upright piano action magnetic force resetting system |
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2019
- 2019-05-07 CN CN201920641572.6U patent/CN210110313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085196A (en) * | 2019-05-07 | 2019-08-02 | 郝一男 | A kind of upright piano action magnetic force resetting system |
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