JPS584263Y2 - dial device - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a dial device.

Conventionally, radio receivers, stereo equipment, recording and playback equipment,
As shown in FIGS. 1 and 2, a dial drive device used in a communication device, etc. has a roller 1, which is a part of the component, fixed to a chassis 3 by a roller shaft 2, or a dial drive device fixed to the chassis 3. After the roller 1 is fitted onto the roller shaft 4, a retaining ring 5 for preventing falling off is fitted and fixed.

However, such a dial device requires a large number of parts and assembly man-hours, resulting in high costs. In addition, if the number of parts such as the roller 1, roller shaft 2 (4), chassis 3, and retaining ring 5 is uneven, extra losses may occur. There was a problem in that it caused

Therefore, an object of this invention is to provide a dial device with a small number of parts and less loss of parts.

An embodiment of this invention will be explained with reference to FIGS. 3 to 5.

That is, this device has a chassis 6 as shown in FIG.
It consists of a shaft 7 and a lawn fall-off prevention piece 8 that are integrally formed, and a roller 10 is connected to a narrow band-like piece 9 protruding from one end of the chassis 6.

The chassis 6, roller shaft 7, roller fall prevention piece 8, strip 9, and roller 10 are integrally formed of flexible synthetic resin.

The tip of the roller fall prevention piece 8 is bent toward the roller shaft 7 side, and a guide slope 8a is provided on its upper surface to facilitate fitting of the roller 10 to the roller shaft 7. A fitting hole 10a for the shaft 7 is provided.

Further, reference numeral 11 indicates a through hole created when molding the falling-off prevention piece 8.

Since this thin strip 9 is flexible, it can be bent to easily fit the fitting hole 10a of the roller 10 onto the roller shaft 7 as shown in FIG. After that, the roller 10 is removed by cutting and removing the strip 9.
can be rotated freely.

By suspending a dial rope (not shown) on this roller 10, it can be used as a dial device for a radio receiver or the like.

Further, as shown in FIG. 4, the roller fall prevention piece 8 is arranged such that the distance between its bent end and the roller axis is slightly smaller than half the outer diameter of the collar of the roller 10, that is, LAD/2. It is designed to be easy to fit and also to reliably prevent falling off.

In this way, since this device integrally molds the roller 10 with the chassis 6 without molding them separately, the number of parts and assembling steps can be extremely reduced, and the number of steps required to match the number of parts and the loss caused by this can be eliminated. It has the advantage of being extremely easy to assemble.

Fig. 5 shows another embodiment of this invention, in which a collar is provided only on one side of the roller 12, and a recess is provided in the chassis 13 to prevent the dial rope from coming off, making it easier to form the roller 12 portion. , has the same effect as the previous embodiment.

As described above, the dial device of this invention includes a chassis made of flexible synthetic resin, a roller shaft made of flexible synthetic resin integrally formed with the chassis, and a thin strip made of flexible synthetic resin attached to the chassis. A roller made of flexible synthetic resin is integrally formed with a strip interposed therebetween and is pivoted to the roller shaft with the strip in a bent state; The roller is equipped with a flexible synthetic resin roller fall prevention piece that prevents the roller from falling off, and the strip is cut and removed after the roller is attached to the roller shaft, so the number of parts is small and assembly work is easy. This has the effect of reducing losses because the number of parts is always the same.

In particular, since the chassis and rollers, which are normally separate parts, are integrated via a strip until just before assembly is completed, there is no need to lose rollers, and there is no need to supply rollers from other sources during assembly. Therefore, there is little loss and the work is easy.

[Brief explanation of the drawing]

Figures 1 and 2 are perspective views showing parts of a conventional dial device, Figure 3 is a perspective view showing parts of an embodiment of this invention, Figure 4 is an assembled cross-sectional view, and Figure 5 is another example. FIG. 3 is an assembled sectional view of the embodiment. 6.13... Chassis, 7... Roller shaft, 8... Roller fall prevention piece, 9...
Strips, 10, 12・°°...loaf.

Claims (1)

[Scope of utility model registration request] a chassis made of flexible synthetic resin; a roller shaft made of flexible synthetic resin integrally formed with the chassis; and a roller shaft made of flexible synthetic resin integrally formed with the chassis via a strip made of flexible synthetic resin; a flexible synthetic resin roller that is pivoted to the roller shaft in a bent state; and a flexible synthetic resin roller that is integrally formed with the chassis to prevent the roller from falling off the roller shaft. A dial device comprising a drop-off prevention piece, the strip being cut and removed after the roller is attached to the roller shaft.