JPH073437Y2 - Winding tool for string winder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a winding tool for a thread winding device provided in a stringed instrument such as a guitar.

<Prior Art> A stringed instrument such as a guitar is provided with a thread winding device for spreading the strings, and a large number of the thread winding devices are arranged in parallel at the head portion of the stringed instrument.

Such a bobbin winder has a take-up shaft for winding a string and a manual knob for rotating the take-up shaft. By rotating the knob with fingers, the string is wound on the take-up shaft. It is configured to be wound up.

Therefore, in this type of stringed instrument, it is necessary to sequentially operate a large number of bobbin winders in order to stretch the string or adjust the tension of the string, which is a troublesome task. I got it.

For this reason, conventionally, the above-described bobbin winding device is driven by a manually operated winding tool, whereby the string is quickly wound.

As shown in FIG. 5, such a take-up device has a winding device 1
It has a long-mouthed receiving portion 3 integrally formed of synthetic resin or the like so that the knob piece 2 can be fitted therein, and a handle 4 which pivotally supports one end in the longitudinal direction of the receiving portion 3. After inserting the knob piece 2 into the receiving portion 3, the knob piece 4 is rotated by rotating the handle 4 so that the winding shaft 5 moves in the chord winding direction or the string unwinding direction. It is configured to rotate to.

<Problems to be Solved by the Invention> In the conventional winding tool, since the receiving portion 3 into which the knob 2 is inserted is directly pivoted to the handle 4, the force applied to the handle 4 by the operator. Will be applied as a rotational force to the picking piece 2, and accordingly there will be a problem that the string is cut due to the excessive force applied to the string, and the string force is mechanically adjusted. There is also a problem that it takes time to tune because it cannot be done.

<Means for Solving the Problem> In the winder of the present invention, the connecting piece 30 is interposed between the receiving portion 10 into which the tab 2 is inserted and the handle 20 which rotates the receiving portion 10.

The connecting piece 30 is constructed such that one end 31 thereof is pivotally attached to the handle 20 and the other end 32 is provided with a torque adjusting mechanism 40, and the torque adjusting mechanism 40 connects the receiving portion 10 and the connecting piece 30. The receiving portion 10 and the connecting piece 30 are connected by a predetermined frictional force by interposing between them, and the receiving portion and the connecting piece 30 are connected to each other when a rotational force larger than a predetermined frictional force is applied. Uncoupling means 41,
The adjusting means 42 is provided for adjusting the frictional force of the coupling means 41 by an external operation.

<Operation> Since the winding tool of the present invention has such a structure, the connecting means is previously formed
If the frictional force of 41 is determined, the operator's force applied to the coupling means 41 will not be transmitted to the receiving portion 10 when the rotational force applied to the receiving portion 10 exceeds a predetermined value.

Therefore, the rotational force applied to the handle 20 simply causes the handle 20 to idle, and at this time, the receiving portion 10 is maintained in a stationary state regardless of the rotational movement of the handle 20.

<Embodiment> FIG. 1 is a perspective view of the winder of the present invention, showing a receiving portion 10, a handle 20 and a connecting piece 30.

The receiving part 10 has a long receiving chamber 11 having a front opening so that the knob 2 of the bobbin winding device 1 can be inserted therein. The receiving chamber 11 changes its length in the longitudinal direction. It is configured to do things.

For this reason, the receiving portion 10 is, as shown in FIGS. 1 and 4,
Two outer wall pieces having an L-shaped cross section are combined in a butt shape with each other, and one of the outer wall pieces is used as a base piece 12, which is connected to the connecting piece 30 by a support shaft 14, Piece
On the other hand, the other outer wall piece is used as the movable piece 13 for the base piece 12.
Is slidably attached to.

The movable piece 13 is provided with a long hole 131, and the fixed screw 15 is inserted into the long hole 131, and the fixed piece 15 fixes the movable piece 13 to the position after the sliding displacement.

The base piece 12 is provided with upper and lower guide grooves 121 and 121 ', and two upper and lower projections 132 and 132' which are provided on the inner surface of the movable piece 13 are fitted into the guide grooves 121 and 121 '.

As shown in FIG. 2, the support shaft 14 is fixed to the base piece 12, and the fixing screw is provided at the center of the base portion of the base piece 12.
It has a screw hole 141 into which 15 is screwed.

The grip 20 has one end of the connecting piece 30 rotatably supported at the tip thereof, so that the connecting piece 30 has a connecting hole.
31 is provided, the reduced end 21 of the handle 20 is loosely fitted in the connecting hole 31, and the reduced end 21 is rotatably connected by the set screw 22.

An end portion of the connecting piece 30 opposite to the connecting hole 31 is formed in a connecting portion 32 for rotatably and non-detachably supporting the support shaft 14 of the receiving portion 10. As shown in FIGS. 2 and 3, a bearing portion 321 that inserts the support shaft 14, a retaining ring 322 that retains the support shaft 14, and a bottom surface 323 formed on the side facing the receiving portion 10. Are provided, and an appropriate number of, for example, four small holes 324 are provided on the bottom surface thereof.

A torque adjusting mechanism 40 is provided in the connecting portion 32 of the connecting piece 30, and the torque adjusting mechanism 40 includes a connecting means 41 for connecting the receiving portion 10 and the connecting piece 30 by a frictional force, and the connecting means 41. The adjusting means 42 adjusts the frictional force of the means 41 by an external operation.

The coupling means 41 couples the receiving portion 10 and the connecting piece 30 with each other by a predetermined frictional force, and when the strength of the rotational force with respect to the receiving portion 10 exceeds the frictional force, the receiving portion is received. Ten
Is set so as to release the connection between the connecting piece 30 and the connecting piece 30, and in the embodiment, the friction plate 411 fixed to the support shaft 14 of the receiving portion 10, for example, a convex line is sequentially provided in the circumferential direction to form an uneven surface. The formed disc and the connecting portion 32 so as to come into contact with the plate surface of the friction plate 411.
The pusher 412 protruding from the small hole 324, the spring 413 that urges the presser 412 toward the friction plate 411, and the bearing 321 of the coupling portion 32 are fitted and attached so as to serve as a fulcrum of the spring 413. And an annular pressing plate 414.

In the embodiment, the adjusting means 42 is a knob dial 421 screwed to the bearing portion 321 so as to press the pressing plate 414.
And a pressing portion 422 protruding inside the knob dial so as to come into contact with the pressing plate 414.The dial 421 is rotated to move the pressing portion 422 forward and backward in the direction of the pressing plate 414. Accordingly, it is designed to increase or decrease the pressing force of the spring 413.

Therefore, according to this embodiment, after the pressing force of the pressing element 412 against the friction plate 411 is determined by the adjusting means 42, the grip 20
When the rotating shaft is rotated, the rotational movement of the connecting piece 30 centered on the support shaft 14 is transmitted to the friction plate 411 via the pressing element 412, and this force causes the support shaft 14 to rotate. And the receiving part 10 fixed to this are rotated. When the string is tense due to the rotation of the receiving portion 10 as described above, the rotating torque is increased accordingly, and finally, the rotating force exceeding the predetermined frictional force is applied to the presser 412. It will be a matter.

In this state, the presser 412 cannot connect the friction plate 411 and only moves while rubbing the uneven surface of the friction plate 411, so that the receiving portion 10 is stationary without receiving the rotational force. , The string will be stretched with a predetermined tension.

<Effect of device> Since the winder of the present invention is such a one, it is possible to eliminate the string cutting accident at the time of string extension and to determine the force applied to the string by mechanical means. There is an effect that it is extremely easy to make the tension of the constant.

[Brief description of drawings]

Fig. 1 is a perspective view of the winder of the present invention, and Fig. 2 is Fig. 1-2.
Fig. 3 is a cross-sectional view taken along the line, Fig. 3 is a cross-sectional view taken along the line Fig. 2-3-3, Fig. 4 is an exploded perspective view of the winding device of the present invention, and Fig. 5 is a perspective view of the winding device of the present invention. . In the figure, 10 is a receiving part 20 is a handle, 30 is a connecting piece, 32 is a connecting part, 40 is a torque adjusting mechanism, 41 is a coupling means, and 42 is an adjusting means.

Claims (1)

[Scope of utility model registration request] 1. A receiving portion into which a knob of a bobbin winding device provided in a stringed instrument is fitted, and a connecting piece pivotally supporting the receiving portion at one end thereof.
The grip has a tip pivotally attached to the other end of the connecting piece, and the connecting piece and the receiving portion are connected via a torque adjusting mechanism, and the torque adjusting mechanism receives the connecting piece and the receiving portion. The receiving part is connected to the connecting piece with a predetermined frictional force interposed between the receiving part and the connecting part, and when the rotational force applied to the receiving part exceeds the connecting force due to the frictional force, the receiving part and the connecting piece are connected. A winding device for a string winding device of a stringed instrument, which comprises a connecting means for unraveling the connecting means and an adjusting means for adjusting the frictional force of the connecting means by an external operation.