JPS6336382Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a switch structure in a snare drum, and more specifically, an operating part and a holding part provided at opposing positions on the drum body allow the snare pin on the bottom surface of the drum to come into contact with or separate from the drum surface. This invention relates to a switch structure that allows

A switch for a snare drum usually has an operating part and a holding part (or a fixed part) at opposing positions on the drum body, and operates the handle of the operating part to bring the snare pin on the bottom of the drum into contact with or away from the drum surface. configured to perform switching. By the way, the sound wires made of thin metal wires that make up this Snatsupi are constantly stretched under strong tension, so they often become fatigued or sag and do not produce sufficient acoustic effects, making it necessary to replace them. occurs. However, the conventional switch structure does not have a mechanism for replacing the snap pin itself, so when replacing the snap pin, the entire switch part had to be disassembled and replaced.

However, in order to replace the snap pin, it is necessary to disassemble the operating section and the holding section provided on the drum body, which is very complicated and inconvenient for the user.

In view of these demands, the purpose of this invention is to provide a switch structure that allows easy replacement of the snap pin and does not reduce the functionality and strength of the snap pin in any way.

This device has a switch structure in which a snap pin on the bottom surface of the drum is brought into contact with or separated from the drum surface by an operating part and a holding part provided at opposing positions on the drum body, and both ends of the snap pin are connected by end fittings. The end fitting on the operating section side is connected to the main body piece connected to the operating section by fitting, and has a size that allows it to be inserted through the snap guide hole of the lower hoop. A snare drum comprising an auxiliary piece, wherein the end fitting on the other side of the holding part is housed and held in a slide groove provided inwardly and upwardly inclined in the holding part via an elastic stopper. Regarding the switch.

This invention will be explained in detail below according to the embodiment shown in the attached drawings. FIG. FIG. 3 is a vertical cross-sectional view of the main parts with the central part of the drum omitted, and a perspective view showing the end fittings at both ends of the snap pin.

As shown in FIG. 1, this invention uses an operating section 50 and a holding section (on the opposite side 70) provided at opposing positions on the body 11 of the snare drum 10 to move the snare pin 20 on the bottom surface of the drum to the drum surface 15. This relates to a switching mechanism for making contact with or separating from the contact point.
In the figure, 12 is an upper hoop, 13 is a lower hoop,
14 is a guide hole provided in the lower hoop for raising and lowering the snap pin, 21 is a sound wire that constitutes the snap pin 20, 25 is a holding rod for the snap pin, 30 is an end fitting on the operating part 50 side of the snap pin, and 40 is also a holding rod. The end fittings on the part 70 side are respectively shown.

The invention can be better understood in the cross-sectional view of FIG. 2 and the perspective view of FIG.

In this invention, both ends of the snap pin 20 are constituted by end fittings 30 and 40. In addition,
In the illustrated embodiment, the snap pin 20 is attached to end fittings 30 and 40 at both ends via snap pin holders 23, 23. Holding rods 25 and 25 are installed between the end fittings 30 and 40 to maintain the overall shape of the snap pin and to restrict its expansion and contraction. Reference numerals 26 and 26 are mounting screws that also serve to adjust the tension of the sound wire.

The end fitting 30 on the operating section 50 side has a main body piece 31 connected to the operating section 50, and is connected to the main body piece 31 by fitting, and is large enough to be inserted through the snap guide hole 14 of the lower hoop 13. The auxiliary piece 35 has two parts.
As is clear from FIG. 3, a flange portion 32 is formed at the lower part of the main body piece 31, and the other auxiliary piece 35 is provided with an insertion portion 36 into which the flange portion 32 can be fitted. As indicated by the chain line in FIG. 3, the flange portion 32 is configured to fit into the insertion portion 36 from the inside.

Here, the structure of the operating section 50 will be explained mainly with reference to the drawing in FIG. A handle lever 55 is pivotally supported on the main body member 2 by a shaft pin 56, and a switch lever 60 is supported on the fixed member 51 by a shaft pin 61.
It is pivoted by.

As shown in the figure, the switch lever 60 is pivotally supported by the operating section 50 at a bent portion bent into a substantially L-shape, and has a lever groove 65 in one arm portion 62. It is link-coupled with the tip boss portion 57 of the handle lever 55, and the body portion 3 of one end fitting 30 of the snap pin 20 is connected at the tip of the other arm portion 66.
1 through a shaft pin 67.

The end fitting 40 on the side of the other holding part 70 in the snap pin 20 is housed and held in a slide groove 75 provided in the holding part 70 so as to be inclined inwardly and upwardly through an elastic stopper 77 .

That is, like the operation section 50, the holding section 70 has a fixing member 71 fixed to the drum body 11.
It consists of a main body member 72 whose position can be adjusted vertically by means of a vertical adjustment screw 73, but the main body member 72 is opened downward, as is particularly clear from the chain line in FIG. The inner side wall 76 of the cutout has a cutout 74 with a slide groove 75, 7 inclined upward in the inner direction of the drum.
5 is formed.

Rollers 45, 45 provided on both sides of the holding portion side end fitting 40 of the snap pin 20 in the width direction are housed in the slide grooves 75, 75, and
The end fitting 40 is held in such a way as to resist the force urged downward by the elastic stopper 77 provided therein. In other words, the holding portion side end fitting 40 of the snap pin 20 is elastically held on the premise of the inward tensile force of the snap pin 20 main body. Reference numeral 78 in the figure is a spring.

Next, to explain the operation of the switch mechanism of this invention, the solid line in FIG. 2 shows the position where the snap pin 20 is in contact with the drum surface 15, and the position shown with the chain line shows the position where the snap pin 20 is separated. .

That is, the handle lever 55 in the solid line position
When the lever rotates in the direction of arrow A about the shaft pin 56, the tip boss portion 57 engages the switch lever 6.
0, the switch lever 60 is rotated in the direction of arrow B about its shaft pin 61 as a fulcrum, and the other arm portion 66
The tip is rotated in the direction of arrow C, that is, the snap pin 20 (end fitting 30) connected to the tip is moved to the position indicated by chain line D, and the snap pin 20 is separated from the drum surface 15.

On the other hand, as described above, the other end fitting 40 of the snap pin 20 has the rollers 45, 45 at both ends of the slide grooves 75, 7, which are inclined upwardly toward the inner side of the drum.
5, the end fitting 40 is constantly applied with a downward force by the biasing force of the spring 78 of the stopper 77, so that the operating section of the snap pin 20 When one end fitting 30 moves downward, the other end fitting 40 correspondingly slides downward in the inclined groove 75 by the biasing force of the spring 78. As a result, the snap pin 20 moves in parallel along the inclined slide groove 75.

On the other hand, when the handle lever 55 is returned to the original solid line position and the snap pin 20 is brought into contact with the drum surface 15, the actions of each part are simply reversed and are not exactly the same. Needless to say.

Next, when removing the snap pin 20, while pushing up the end fitting 40 on the holding section side toward the spring 78 side, the auxiliary piece 3 of the end fitting 30 on the other operating section side
5 inward to release the fitting with the main body piece 31. When the auxiliary piece 35 is removed from the main body piece 31, the other end fitting 40 is easily removed since it is only elastically held in the inclined slide groove 75. Then, the auxiliary piece 3 of the end fitting 30
5 has a size that allows it to be inserted through the snap guide hole 14 of the lower hoop 13, so if it is pulled out toward the holding part 70,
The entire snap pin 20 as well as the end fittings 30 and 40 are separated independently from the operating section 50 and the holding section 70.

On the other hand, when attaching the snap pin 20, conversely, fit the holding part side end fitting 40 into the slide groove 75, and then while pushing up this end fitting 40 toward the spring 78, remove the auxiliary piece of the other end fitting 30. 35 into the main body piece 31.

In this manner, this invention allows the snap pin 20 to be independently separated from the operating section 50 and the holding section 70 and assembled therein with an extremely simple operation, and can be easily replaced and repaired. Therefore,
This eliminates the troublesome work of disassembling all the parts from the operating part to the holding part and assembling them one by one each time the snap pin is replaced, as was done in the past.

In addition, in the switch structure of this invention, since the holding part is a sliding mechanism equipped with an elastic stopper, the snap pin can be moved easily and smoothly, and the switching feeling of the operating part is also extremely good. This invention has many advantages over conventional switch structures of this type.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a snare drum seen from below showing an embodiment of this invention, Fig. 2 is a longitudinal sectional view of the main parts with the central part of the drum omitted, and Fig. 3 is the end fittings at both ends of the snare drum. FIG. 10... Snare drum, 11... Body, 15...
...Drum surface, 20...Snappy pin, 30...Operation part side end fitting, 31...Body piece, 35...Auxiliary piece, 40...Holding part side end fitting, 50...Operation part, 55...Handle lever , 60... Switch lever, 70... Holding section, 75... Slide groove,
77...stopper, 78...spring.

Claims (1)

[Scope of utility model registration request] In a switch structure in which a snap pin on the lower surface of the drum is brought into contact with or separated from the drum surface by an operating part and a holding part provided at opposing positions on the drum body, both ends of the snap pin are constituted by end fittings, and , the end fitting on the operating section side is connected to the main body piece connected to the operating section, and an auxiliary piece that is connected to the main body piece by fitting and has a size that allows it to be inserted through the snap guide hole of the lower hoop. 1. A snare drum switch characterized in that the end fitting on the other side of the holding part is housed and held in a slide groove provided in the holding part so as to be inclined inwardly and upwardly through an elastic stopper.