JPS593645Y2 - Rotary dial governor mechanism for telephones - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a governor mechanism for a rotary dial for telephones.

Conventionally, as this type of apparatus, those shown in FIGS. 1 and 2 have been used.

To explain this with a diagram, a flybar 2 is attached to a governor shaft 20 in a cylindrical governor cup 1 with one end closed.
Two governor weights 3 and 4 facing each other are arranged on the upper surface of the flybar 2.

In this case, these governor weights 3.4 are secured by inserting the support pins 9, 10 into the through holes 7, 8 of the support parts 5, 6 at both ends, and fitting their tips into the holes 11.12 of the flybar 2. It is rotatably supported by support pins 9 and 10.

Reference numeral 13 is a governor spring, and one end thereof is locked to a locking pin 14 disposed on one governor way 1 to 3, and the other end is locked to a locking pin 15 of another governor weight 4, respectively. When the dial is released, the governor weights 3 and 4 rotate clockwise in FIG. 1, and the elasticity of the governor weights prevents the centrifugal force from expanding the support pins 9 and 10 more than necessary, in other words. The governor weights 3 and 4 are positioned at a predetermined interval from each other.

However, in such a configuration, the support pins 9,
Not only is the assembly work complicated, such as caulking 10 to the fly 2 and applying oil between the through holes 7 and 8 and the support pins 9 and 10, but if the caulking strength of the support pins 9 and 10 is too large, the governor weight 3 , 4 may not rotate smoothly.

The present invention improves on these conventional drawbacks by integrally forming a bearing shaft at both ends of the fly, and making it possible to freely rotate the bearing shaft without using a through hole or caulking provided in the support part of the governor weight. The present invention provides a governor mechanism for a rotary dial for a telephone, which is easy to assemble by adopting an engaging configuration.

An embodiment of the present invention will be described below based on the drawings.

In FIGS. 3 and 4, the fly 2 is housed in the governor cup 1, and the governor shaft 2 is inserted into the shaft hole 2b of the governor cup 1 through the shaft hole 1a of the governor cup 1, as in the conventional example.
The tip of the fly 2 is press-fitted and fixed to the governor shaft 20, and a cylindrical body 21.21 integrally formed with the fly 2 is disposed on the upper surface of both ends thereof.

A slit 22.22 is formed from the tip of each of these cylindrical bodies 21, 21 along the axial direction of the cylindrical body 21.21.
are provided on the outside of one of the three parts divided into two by the slits 22, 22, that is, on the side where centrifugal force acts on the governor weights 3 and 4 due to the rotation of the fly. A cylindrical protrusion 23 is provided to hold the governor weight 3.4 in a state in which the cylindrical body 21.21 is inserted into the matching holes 7, 8.

For this reason, the slit 22 is provided in a direction that intersects the direction in which the centrifugal force is applied.

A distance approximately corresponding to the thickness D of the governor weights 3 and 4 is formed between the lower end of the projection 23 and the upper surface of the fly 2 (see FIG. 5).

In addition, the governor weights 3 and 4 are incorporated into the cylindrical body 21.2.
When the governor weights 3 and 4 are rotatably held and operated about the axis 1, the governor weights 3 and 4 are attached to the cylindrical body 21.
．． 21, so that the protrusion 23 is held at right angles to the cylindrical body 21 to reduce so-called backlash, so that the protrusion 23 is at least on the upper side of the right cylindrical body 21 and at the bottom on the left cylindrical body 21 on the governor weight side, that is, in the state shown in FIG. The governor weights 3 and 4 are disposed on the side where centrifugal force is applied to the governor weights 3 and 4 by rotation of the fly.

When assembling, insert the two-part part of the tip of the cylindrical body 21 of the fly 2 into the engagement hole 7° 8 of the governor weights 3 and 4 while pressing inward, and the cylindrical body 21 will be formed into a springy shape. Since the protrusions 23 and 23 are made of high-quality materials, they bend toward the center slit 22 and the engagement hole has a dimension of 7.8 degrees, so that the protrusion 23 also passes through the engagement holes 7 and 8 and is fitted therein.

At the end of fitting, the protrusion 23 of the cylindrical body 21 is in the engagement holes 7 and 8.
In order to come out higher and restore the original dimensions, the governor weights 3 and 4 are prevented from coming off by the protrusion 23 and at the same time are rotatably supported by the portion of the cylindrical body 21 below the protrusion 23.

When assembling, the fly 2 may be fixed in the governor cup 1 in this state as described above.

Reference numeral 13 denotes a governor spring, which is the same as that explained in FIGS. 1 and 2, so its explanation will be omitted.

The fried material 2 can be easily manufactured by molding it from a synthetic resin material such as plastic.

It is also obvious that the governor weights 3, 4 may be integrally formed with the engagement pins 14, 15 by die casting.

As is clear from the above description, the governor mechanism of the present invention has the following effects.

(1) Assembly is easy because there is no caulking work for support pins.

(2) The number of parts can be reduced.

(3) Since there is no caulking part, there is no need to worry about the governor weight rotating incorrectly.

(4) By molding the fried material using synthetic resin material, the process of oiling can be omitted.

[Brief explanation of the drawing]

Figure 1 is a plan view showing the structure of a conventional telephone governor;
The figure is an exploded perspective view of the governor in Figure 1, Figure 3 is a plan structural view showing an embodiment of the governor device according to the present invention, Figure 4 is an exploded perspective view of the embodiment in Figure 3, and Figure 5 is an exploded perspective view of the governor in Figure 1. FIG. 3 is a partially enlarged sectional view of the left side of the embodiment of the present invention. 1... Governor cup, 2... Fly bar 3, 4... Governor weight, 5, 6...
...Support part, 7, 8...Engagement hole, 13...
... Governor spring, 21 ... Support shaft, 22
...Slit, 23...Protrusion to prevent removal.

Claims (1)

[Scope of utility model registration request] A governor cup, a flyver housed in the governor cup so as to be rotatably supported on a governor shaft, and one end of each of the flybars is rotatably supported and fixed to each other at a predetermined position by a governor spring. and a plurality of governor weights, the rotation for a telephone is such that when the flybar rotates on the governor shaft, the elastic force of the governor spring acts against and balances the centrifugal force acting on the governor weight. In the governor mechanism with a shaped dial, a support shaft for a governor weight is integrally formed at both ends of the flyver, and a slit is provided at the free end of the support shaft so as to cross the direction in which the centrifugal force acts. of the three parts of the support shaft divided into two parts by the slit, the side on which the centrifugal force acts is provided with a protrusion for preventing removal for holding the governor weight; When the end portion is fitted into the retaining hole of the governor weight, the three parts bend toward the slit, and the protrusion passes through the engagement hole and is fitted, and after fitting is completed, the bending is restored and the slit is bent. A governor mechanism for a rotary dial for a telephone, characterized in that the governor weight is rotatably held on the support shaft and prevented from coming off by the protrusion.