JPH0117594B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention is particularly applicable to French valves having two or more tuning sliding valve blocks and reversible air control valves.
Pertains to metal wind instruments such as horns.

In the known triple French horn, three sliding piece valve blocks for tuning are provided for the three horn sections, and these valve blocks are activated or deactivated by a total of four pneumatic control valves. controlled by. Simultaneous actuation of one pair of air control valves directs the air flow toward the second flow path, then a new actuation of the other pair of air control valves directs the air flow toward the second flow path. It is necessary to reorient to

[Problem to be solved by the invention]

The object of the present invention is to simplify the structure of the known French horn, which is complicated as described above, and to significantly reduce the overall weight.

[Means for solving problems]

In order to solve this problem, the present invention provides a metal wind instrument as described above with only a pair of air passage directional control valves for selectively directing the air flow toward each tuning sliding valve block. It is. To this end, each air control valve has a cylindrical valve housing having two or more air passages in a cylindrical casing and one air passage in the end wall of the casing, and an L-shaped cubital tube within the valve housing. A rotatable valve body forming an internal flow path is provided. For practical purposes, the two valve bodies of a pair of pneumatic control valves are mounted so as to be rotatable together on a common axis of rotation, and the common axis of rotation is coupled to one control by a tension spring mechanism. position and selectively held in the other control position using a lever mechanism.

In a preferred embodiment, the above-mentioned lever mechanism includes a double-armed lever and a swing shaft fixedly connected to the lever so as to be perpendicular to each other at the center point of the lever, and a spring member is coupled to the free lower end of the swing shaft for swinging. Holds the shaft in one control position. This swing shaft is held so as to be swingable in either the left or right direction by applying finger pressure on one arm of the dual-arm lever. The swing shaft is configured to apply rotational motion to the rotation shafts of the pair of air control valves through one connecting rod.

A flexible tensioning member is attached to the connecting rod to generate rotational movement on the rotating shaft. This is accomplished by wrapping the flexible tensioning member around the rotation axis of a pair of air control valves and securing each end of the tensioning member onto the articulating rod.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

〔Example〕

As is clear from the simplified diagram in FIG. 1, the air flow flowing in from the mouthpiece 5 not only passes through the first flow passage, but also flows into the second flow passage by simultaneously operating the pair of air control valves 1 and 2. It also passes through and flows out from the blowout port 6. one first
By selectively passing the blown air through the flow passage and the two second flow passages and letting it flow out from the rattling opening, the sound range of the French horn can be expanded to three times that of a simple French horn. The first flow path and the second flow path are provided with tuning sliding valve blocks 3, 4 which themselves have similar construction.

FIG. 2 shows a detailed structure for jointly operating the pair of air control valves 1 and 2 via the novel lever mechanism. This lever mechanism consists of a dual-arm lever 18 that can be operated alternately in the direction of arrow 22 by the player's finger pressure.
, in which a pivot shaft 19 is orthogonally integrated at the pivotal fulcrum of this lever 18 , the free lower end of which is located at a point 3 that the valve body 14 can take within the valve housing 7 of the air control valve 1 , 2 . 1 of 3 control positions
It is held by the spring mechanism 17 in the normal position corresponding to the position.

One connecting rod 20 at the free lower end of the swing shaft 19
are hingedly connected and a pair of air control valves 1 and 2
A flexible tensioning member 21 is wrapped around the rotating shaft 16 of the rotating shaft 16 to cause the rotating shaft 16 to alternately generate a rotational movement 23 . By using such a connecting rod 20, each valve body 14 of the two air control valves 1 and 2 can be
are pivoted into two other control positions for directing the blown air into the two second flow passages.

Figures 3-5 show additional details of the preferred three-way air passage directional control valves 1,2. The cylindrical casing 11 of each valve housing 7 is provided with three air flow channels 8, 9, 10, whereas the cylindrical casing end wall 13 is provided with an axial air flow opening 12. Furthermore, the valve body 14 has an internal passageway in the form of an L-shaped elbow tube, and the valve body 14 is rotatable inside the cylindrical casing.

Thereby, the flow opening of the internal passage opening into the cylindrical surface of the valve body 14 can be selectively aligned with one of the flow passages 8, 9, 10 in the cylindrical casing.

[Brief explanation of drawings]

Fig. 1 is a simplified diagram showing the basic configuration of a triple French horn, and Fig. 2 is a partial diagram showing the air control valve and its operating structure in approximately the actual size.
3 is a side view of the air control valve, FIG. 4 is a longitudinal sectional view of the air control valve shown in FIG. 3, and FIG. 5 is a plan view of the air control valve shown in FIG. 3. FIG. 6 is a view of a part of the lever mechanism viewed from the direction of arrow 25 in FIG. 2. 1, 2...Air control valve, 3, 4...Sliding valve block for tuning, 5...Uter mouth, 6...Blowout flap opening, 7...Valve housing, 8, 9, 10...Air circulation opening , 11... Cylindrical casing, 13...
Casing end wall, 14... Valve body, 15... Elbow tubular internal passage, 16... Rotating shaft, 17... Spring mechanism,
18...double arm lever, 19...swing axis, 20...
Connecting rod.

Claims (1)

[Scope of Claims] 1. A metal wind instrument comprising a plurality of sliding valve blocks for tuning and a pair of passage direction air control valves for selecting one of the sliding valve blocks,
The pair of air control valves is composed of one air control valve 1 placed on the mouthpiece 5 side of the musical instrument and one air control valve 2 placed on the blowout mouth 6 side, Through the control valves 1, 2 it is possible to selectively switch the flow of air to one of each of the air flow passages, including a plurality of tuning slide valve blocks 3, 4; Each of the valves 1 and 2 includes a cylindrical valve casing 11 and a rotatable valve body 14 therein, and a plurality of flow openings 8,
9 and 10 are formed, and an axial flow opening 12 is formed on the end surface side of the cylindrical wall thereof, and the valve body 1
An internal passageway 15 in the shape of a cubital tunnel is formed inside 4;
As a result, one end of the internal passage 15 is connected to the valve body 14.
The plurality of flow openings 8, 9, 1 are opened for each rotational operation of
The valve body 14 is incorporated into the valve casing 11 so that it can be aligned with one of the air control valves 1 and 2, and each valve body 14 of the pair of air control valves 1 and 2 can actuate the valve body simultaneously. The valve body 14 is mounted on a common interlocking member, and an appropriate actuation mechanism is connected to the common interlocking member.
a metal wind instrument that is selectively operable into one of the three air flow passages. 2. Each valve body 14 of the pair of air control valves 1 and 2 is provided on one common rotating shaft 16, and the common rotating shaft 16 is moved from one control position to the other control position by a lever mechanism having a spring mechanism 17. 2. The metal wind instrument according to claim 1, wherein the metal wind instrument is selectively operable. 3. The lever mechanism includes a double-arm lever 18 whose central portion is pivotably supported, and a swing shaft 19 that hangs orthogonally from the center portion of the lever, and further includes a swing shaft 19 at a lower end of the swing shaft 19. One end of the connecting rod 20 is hinge-connected, and a spring mechanism 17 is further attached to the lower end of the swing shaft 19 to move the swing shaft 19 to one of three control positions: left, center, and right positions. The metal wind instrument according to claim 2, which is formed to be able to be held. 4. Both end portions of a flexible tension member 21 wound around the common rotating shaft 16 to which each of the valve bodies 14 is attached are fixed to both ends of the connecting rod 20, and the linear movement of the connecting rod 20 causes 4. The metal wind instrument according to claim 3, wherein alternate rotational movements can be transmitted to the common rotating shaft 16.