JPS6223044Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a hearing aid adjuster. More specifically, this invention relates to a hearing aid adjuster, and more specifically, it is a hearing aid adjuster. More specifically, it is a hearing aid adjuster. This invention relates to a hearing aid adjuster composed of a resistor.

In a conventional regulator of this type, individual variable resistors 1 are mounted on a printed circuit board 2, as shown in FIG. 1a. Usually, the printed circuit board 2 is arranged in parallel with the chassis board 3, and the variable resistor 1 is arranged between the printed circuit board 2 and the chassis board 3, and the adjustment member 1a of the variable resistor 1 and the adjustment member 1a of the variable resistor 1 are bored in the chassis board 3. Hole 3
a are arranged so that they are concentrically aligned.

To position and arrange the variable resistor 1 as described above, place the variable resistor 1 on the printed circuit board 2 directly or through the spacer 4 as shown in FIG. The wire 1b was attached by providing a land on the pattern side of the printed circuit board 2 and soldering 2a.

Conventional hearing aid adjusters with this structure are
Due to variations in the external dimensions of the variable resistor 1,
If the relative positional relationship between the adjusting member 1a and the adjusting hole 3a is not constant and there is a mutual positional deviation, there is a problem that the adjusting operation cannot be performed smoothly. As a countermeasure to this problem, a positioning jig is used to attach the variable resistor 1, but the reality is that even with the use of the jig, it is not possible to compensate for variations in the dimensions of the variable resistor 1. In addition, when fitting (adjusting the hearing aid according to the auditory characteristics of the wearer), the driver groove 1 of the adjustment member 1a shown in FIG.
Since the indicators _1a , 1a, ₂ , etc. are small and difficult to see, the operability of adjustment is poor, and the consistency confirmation between the indicators 1a, ₂ and the scale 3b displayed on the chassis plate 3 tends to be unreliable. It was hot. Furthermore, since the adjustment member 1a is rotated with a screwdriver during fitting, force is applied directly to the lead wire 1b, causing damage and damage.
It had many drawbacks, such as wire breakage and other problems.

On the other hand, in recent years, hearing aids have been required to have more and more functions, be smaller in size, and have higher reliability, and as a result, the density of components has increased significantly. Therefore, it has become impossible to realize a satisfactory hearing aid function by using an adjuster having a variable resistor mounting structure as described above.

This invention was made in view of the above circumstances, and the purpose is to provide a hearing aid adjuster that solves the above conventional problems by assembling multiple variable resistors into a single component. It is something to do.

Another object of this invention is to obtain a hearing aid adjuster in which a plurality of small variable resistors are each covered with an adjustment cap and housed in a single case to form a single unit.

This invention will be explained below using an example shown in the drawings.

In Figure 2 a and b, multiple (here, 6)
The variable resistor 10 includes an adjustment groove 10a and a plurality of lead wires 10b, and a substrate 10c is connected to the lower case 1.
It is attached to each quadrangular section divided by one rib 11a. 11b is a through hole for the lead wire 10b. Each of the plurality of adjustment caps 12 is attached to the variable resistor 10, and as shown in FIG.
A driver groove 12b is formed at the upper end, and an index 12c is displayed on the upper surface. The upper case 13 has a plurality of protruding short cylindrical parts 13a into which the upper end of the substantially cylindrical adjustment cap 12 is fitted, and protrusions that fit into the holes 11c of the lower case 11 are formed on the lower surface of the short cylindrical parts 13a. This allows the relative positions of the upper and lower cases 13 and 11 to be accurate for assembly. The printed circuit board 14 has a plurality of holes 14a through which the lead wires 10b pass, holes 14b into which two protrusions 11d protruding from the lower surface of the lower case 11 fit, and holes 14c into which the screws 15 pass. There is. The upper end of the screw 15 is the screw hole 1 formed in the upper case 13.
3b. The upper case 1 is mounted on the chassis board 16 parallel to the printed circuit board 14.
A plurality of holes 16a are provided that match the short cylindrical portions 13a of No.3.

When assembling, the variable resistor 10 is mounted on a predetermined position on the lower case 11, and each variable resistor 1 is
After attaching the adjustment cap 12 to the upper case 1
3 and are fastened with screws 15 to be integrally fastened and attached to the printed circuit board 14.

In the thus assembled adjuster, the upper and lower cases 13, 11 and the printed circuit board 14 are accurately positioned by the engagement of their respective holes and protrusions, and the adjustment cap 12 is also positioned by the short cylindrical portion 13a. The adjustment cap 12 can be easily placed at a desired height with respect to the surface of the chassis plate 16. Also, the rib 11a of the lower case 11 allows the substrate 10c of the variable resistor 10 to
As a result, when operating the adjustment cap 12, no force is directly applied to the lead wire 10b, thereby preventing breakage, disconnection, etc. of the lead wire 10b. Furthermore, no jig is required during assembly, and adjustment operations can be performed accurately and quickly.

[Brief explanation of the drawing]

Figures 1a and b are respectively partially sectional side views of the conventional product, Figure 1c is a plan view, and Figure 2 is an embodiment of this invention, where a is an exploded perspective view and b is a partially enlarged sectional view. Figure 1c is a sectional view of the adjustment cap. 10... Variable resistor, 11... Lower case, 12... Adjustment cap, 13... Upper case, 14... Printed circuit board, 15... Screw, 16... Chassis board.

Claims (1)

[Scope of utility model registration request] A lower case having a plurality of sections formed by ribs, a plurality of variable resistors each having an adjustment groove formed at an upper end and attached to each section, and a protrusion engaging the adjustment groove at a lower end. A plurality of substantially cylindrical adjustment caps attached to the variable resistor and an upper case formed with a plurality of short cylindrical parts into which the upper ends of the adjustment caps fit are sequentially placed on a printed circuit board and tightened. Hearing aid adjuster that is worn on the body.