JPH09215099A - Lever switch and hearing aid with integrated lever switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate danger to infiltrate seat of a person wearing a hearing aid or rain drops into a case by forming a gap between the hearing aid case and a lever switch so as to make the inside visible for the hearing aid case. SOLUTION: A lever switch 5, for which bevel-shaped protruding parts 8a and 9a are formed through a gap 7a onto an outer peripheral surface 5b of a lever part 5a, is fitted to a hearing aid case 2 by protruding the lever part 5a from an opening part 3 on the hearing aid case 2 and engaging an edge part 11a formed at the case opening part 3 corresponding to the gap 7a with the gap 7a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever switch that rotates a lever portion to switch contacts and a hearing aid incorporating the lever switch.

[0002]

2. Description of the Related Art As a hearing aid incorporating a conventional lever switch, as shown in FIGS. 10 and 11, the lever part 101 of the lever switch 100 for input switching is provided so as to be rotatable. It is known that an opening 103 that projects outside the case 102 is formed large on the back surface of the case 102. Also, the lever switch 100
Also, as shown in FIGS. 10 and 11, the opening 102 of the case 102 to be attached is attached to the case 102 without any relation.

[0003]

In a hearing aid incorporating a conventional lever switch, since the opening 103 is made large so that the lever 101 can rotate, regardless of the switching state of the lever switch 100, Lever part 101
Is upright (Fig. 10 (a)), the lever portion 101
10 is in an inclined state (FIG. 10B), a gap 104 is formed between the case 102 and the lever switch 100, and sweat or water of the hearing aid user who flows to the outside of the case 102 may enter the case 102. was there. In particular, the lever portion 10
When 1 is in an inclined state (FIG. 10 (b)), the case 102
Since the gap 104 is formed so that the inside can be seen, there is a concern that sweat, water, or the like may easily enter the case 102.

Therefore, it is conceivable to change the lever switch 100 into a slide switch so that a gap is not formed between the lever switch 100 and the case 102 even if the lever switch 100 is operated. However, even if sweat or the like can be prevented from entering the case 102, it cannot be prevented from entering the inside of the switch, and there is a problem that corrosion occurs. Although it may be possible to make the slide switch a waterproof structure, there are problems that the number of components increases and the cost increases, and the operability as a hearing aid switch also deteriorates.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is not to impair the operability as a switch, but also has a simple structure and a stable waterproofing. The present invention aims to provide a lever switch that can exert its effect and a hearing aid that incorporates the lever switch.

[0006]

In order to solve the above-mentioned problems, the invention of claim 1 is a lever switch for rotating a lever part to switch contacts, and a plurality of umbrella-shaped protrusions are provided on an outer peripheral surface of the lever part. Is formed through a gap, and a plurality of edge portions are formed in the opening of the attachment target corresponding to the gap,
The gap is engaged with the edge portion to be attached to the attachment target.

According to a second aspect of the present invention, there is provided a lever switch in which a plurality of umbrella-shaped protrusions are formed on the outer peripheral surface of the lever portion with gaps, and the lever portion is protruded from the opening of the hearing aid case, and the gap is provided. Corresponding to the above, the plurality of edges formed in the case opening are engaged with the gaps and attached to the hearing aid case.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of a lever switch according to the invention of claim 1, FIG. 2 is a side view of the lever switch, FIG. 3 is a sectional view of the lever switch, FIG. 4 is a front view of the lever portion, and FIG. 6 is a side view of the portion, FIG. 6 is a diagram for explaining the operation of the lever switch, FIG. 7 is a partial sectional perspective view of a hearing aid incorporating the lever switch according to the invention of claim 2, and FIG. Cross section of
FIG. 9 is a sectional view of the lever switch mounting portion in the left-right direction.

As shown in FIG. 1, the lever switch 5 is
A lever portion 5a operated with a fingertip or the like, and two terminal plates 5d and 5e having a plurality of terminals 5c and sandwiching the lever portion 5a from the front and rear.
And a shaft 5f fitted into the through holes of the lever portion 5a and the terminal plates 5d and 5e, and the terminal plates 5d and 5e fitted to the tip of the shaft 5f.
It is composed of a washer 5g for fixing the. The lever switch 5 uses the fingertip or the like to connect the lever portion 5a to the shaft 5f.
A switch that rotates about the center of the switch to switch the contacts (lever 5a has 3 contacts: left tilt, upright, right tilt)
It is.

On the outer peripheral surface 5b of the lever portion 5a, double umbrella-shaped protruding portions 8 and 9 are formed over the entire circumference with a gap 7 therebetween. As shown in FIG. 2 and FIG. 3, these protrusions 8 and 9 are arranged in the direction orthogonal to the rotation direction of the lever part 5a and the left and right protrusions 8a and 9a formed in the rotation direction of the lever part 5a. The front and rear protrusions 8b and 9b are formed. The gap 7 includes a left-right gap 7a formed in the turning direction of the lever portion 5a and a front-rear gap 7b formed in a direction orthogonal to the turning direction of the lever portion 5a.

Further, as shown in FIGS. 4 and 5, the lever portion 5a holds two movable contact pieces 5h having an elastic force in the front and rear, and positions each position at the time of switching contacts, and at the time of switching. Two click portions 5i are formed on the left and right in order to configure a click mechanism that produces a moderate resistance. In addition, the movable contact piece 5h is formed with a pair of protrusions 5k forming contact points.

Further, as shown in FIG. 6A, three terminals 5c are fixed to the terminal plate 5d, and the terminal plate 5e is
As shown in FIG. 2, the two terminals 5c are fixed.
Then, when the terminal plates 5d and 5e are fixed by the shaft 5f and the washer 5g with the lever portion 5a sandwiched from the front and rear, the protrusion 5k of one movable contact piece 5h and the three terminals 5c of the terminal plate 5d,
The projecting portion 5k of the other movable contact piece 5h and the two terminals 5c of the terminal plate 5e constitute contacts having elastic force by the movable contact piece 5h.

That is, two contacts and one circuit are formed by the protrusion 5k of one movable contact piece 5h and the three terminals 5c of the terminal plate 5d, and the protrusion 5k of the other movable contact piece 5h and two terminals 5c of the terminal plate 5e. One contact and one circuit are composed of. In addition, the terminal board 5d,
Six recesses 5j are formed on the left and right to engage with the click portion 5i to form the click mechanism.

Lever switch 5 constructed as described above
Allows the lever portion 5a to freely rotate by causing the lever portion 5a to project from an opening formed in an attachment target (not shown) such as a case of an electronic device and engaging the edge portion of the opening with the gap 7. Then, the contacts are mounted on the mounting object so that the contacts can be switched. Then, the outer protruding portion 8 sandwiches the edge portion of the opening of the exposed portion in the gap 7, so that the protruding portions 8 and 9 and the edge portion of the opening come into close contact with each other, and the gap between the lever switch 5 and the object to be attached is set. An unnecessary gap is not formed in. Therefore,
It is possible to prevent infiltration of liquid such as water or dust.

When the lever portion 5a is rotated, as shown in FIG. 6, the two movable contact pieces 5h move together with the lever portion 5a, and the click portion 5i is engaged with the recess 5j.
To re-engage with the adjacent recess 5j. Then, the lever portion 5
Each terminal plate 5d provided corresponding to the rotation angle of a,
The terminals 5c fixed to 5e are electrically connected via the protrusion 5k of the movable contact piece 5h. Note that FIG. 6 shows the relationship between the terminal plate 5d and the movable contact piece 5h.

As an embodiment of the lever switch according to the invention of claim 1, as shown in FIG. 4 and the like, the umbrella-shaped protrusions 8 and 9 are doubled with a gap 7 between them, and A case has been described in which one edge is formed in the opening of the attachment target corresponding to one gap 7, and one gap 7 and one edge are engaged to attach to the attachment target. However, a plurality of umbrella-shaped protrusions are formed over the entire circumference of the outer peripheral surface 5b of the lever portion 5a with a gap therebetween, and a plurality of edge portions are formed in the opening of the attachment target corresponding to the plurality of gaps. It is also possible to attach the object to be attached by engaging the gap and the edge portion facing each other.

For example, an umbrella-shaped protrusion is formed in a triple manner with a gap therebetween, and two edge portions are formed in the opening of the object to be attached corresponding to the two gaps. Then, it is also possible to engage the gaps facing each other with the edge portions and attach them to the attachment object. In this way, the protrusions are formed in a triple manner with a gap therebetween, and the two gaps and the two edges are engaged with each other to be attached to the object to be attached. Since an unnecessary gap is not formed between the lever switch and the object to be attached, it is possible to more effectively prevent infiltration of liquid such as water or dust.

Next, an ear-hook type hearing aid incorporating the lever switch 5 will be described. As shown in FIG. 7, the behind-the-ear type hearing aid 1 amplifies an output signal of a microphone and a microphone for converting an audio signal into an electric signal and converts an output signal of a hearing aid processing unit or a hearing aid processing unit for performing a hearing aid process into a sound. The case 2 is configured to house earphones and the like. Further, on the back surface 2a of the hearing aid case 2, the opening 3,
4 is formed, and the lever portion 5a of the lever switch 5 which is a three-stage changeover switch (three positions), the operation portion 6a of the gain adjusting volume 6 and the like are arranged so as to project.

The lever switch 5 of the ear-hook type hearing aid 1 includes a lever portion 5a operated by a fingertip and a case 2
In the width (left and right) direction to switch the contacts (lever 5a is tilted to the left, upright, tilted to 3 positions), and a switch that allows the desired function to be selected. Plays both roles of switch.

As described above, the lever portion 5a is formed with a double umbrella-shaped projection portion over the entire circumference of the outer peripheral surface 5b of the lever portion 5a via the gaps 7a and 7b. As shown, these protrusions are the width of the case 2 (left and right).
The left and right protrusions 8a and 9a are formed in the same direction, and the front and rear protrusions 8b and 9b are formed in the longitudinal (front and rear) direction of the case 2. The gap 7a is a left-right gap formed in the width direction of the case 2, and the gap 7b is a front-rear gap formed in the longitudinal direction of the case 2.

Further, in the opening 3 of the case 2, the case 2 follows the shapes of the left and right front and rear projections 8a, 8b, 9a, 9b.
Left and right edge portions 11a protruding in the width direction and front and rear edge portions 11b protruding in the longitudinal direction of the case 2 are formed.

Then, as shown in FIG. 8, the left and right edge portions 11a protruding in the width direction of the case 2 are engaged with the left and right gaps 7a formed in the width direction of the case 2, and as shown in FIG. The front and rear edge portions 11b protruding in the longitudinal direction of the case 2 are engaged with the front and rear gaps 7b formed in the longitudinal direction of the case 2.

Therefore, the lever switch 5 includes the left and right front and rear protrusions 8a, 8b, 9a and 9b and the left and right front and rear edges 11.
The left and right protrusions 8a and 9a are closely attached to the left and right edge portions 11a, and the front and rear protrusion portions 8b and 9b are closely attached to the front and rear edge portions 11b and the lever portion 5a. No more gap than necessary is formed with the opening 3.

With the above structure, in the left-right direction, as shown in FIG. 8, when the lever portion 5a is in the upright state (FIG. 8A), the lever portion 5a is in the inclined state (FIG. 8A). 8 (b), no gap is formed between the lever switch 5 and the case 2 so that the inside of the case 2 can be seen. Also, in the front-rear direction, the front-rear edge 11b is always engaged with the front-rear gap 7b, so that no gap is formed between the lever switch 5 and the case 2 so that the inside of the case 2 can be seen.

Therefore, the left and right front and rear projections 8a, 8b and 9 are formed.
a, 9b and the left and right front and rear edges 11a, 11b are in close contact with each other, and the case 2 and the left and right front and rear protrusions 8a, 8b, 9a,
In combination with the water-repellent action of the material of the lever portion 5a provided with 9b, it is possible to prevent perspiration and raindrops of the hearing aid wearer from entering the case 2.

As an embodiment of a hearing aid incorporating the lever switch according to the invention of claim 2, as shown in FIG. 7 and the like, umbrella-shaped protrusions 8a, 9a are formed on the outer peripheral surface 5b of the lever portion 5a. The lever switch 5 which is double formed through the gap 7a is provided from the opening 3 of the hearing aid case 2 to the lever 5
The case where the a is projected and the one edge 11a formed in the case opening 3 corresponding to the one gap 7a is engaged with the gap 7a and attached to the hearing aid case 2 has been described.

However, a lever switch, in which a plurality of umbrella-shaped protrusions are formed on the outer peripheral surface 5b of the lever portion 5a with a gap, allows the lever portion 5a to protrude from the opening 3 of the hearing aid case 2 and corresponds to the gap. Then, the plurality of edge portions formed in the case opening portion 3 can be engaged with the gap and attached to the hearing aid case 2. For example, the outer peripheral surface 5b of the lever portion 5a
A lever switch 5 having an umbrella-shaped projecting portion formed in a triple manner with a gap is provided from the opening 3 of the hearing aid case 2 to the lever portion 5.
A can be attached to the hearing aid case 2 by projecting a and engaging a gap facing two edges formed in the case opening 3 corresponding to the two gaps.

In this way, the lever switch, in which the projecting portions are triple-formed with the gap therebetween, engages the gaps facing the two edges formed in the case opening 3 corresponding to the two gaps, and the hearing aid case. By attaching to the case 2, it is possible to more effectively prevent perspiration and raindrops of the hearing aid wearer from entering the case 2 as compared with the case where the protrusions are doubled with a gap.

[0029]

As described above, according to the invention of claim 1, the lever switch is mounted on the mounting object by engaging the plural edges of the opening of the mounting object with the plural gaps. , Since the plurality of protrusions and the plurality of edges of the opening are in close contact with each other and an unnecessary gap is not formed between the lever switch and the object to be mounted, the intrusion of liquid such as water or dust is effectively prevented. be able to.

According to the second aspect of the invention, the plurality of protrusions and the plurality of edges of the case opening allow the plurality of protrusions and the plurality of edges of the opening to be formed. The close contact does not form an unnecessary gap between the lever switch and the hearing aid case, effectively preventing perspiration and raindrops of the hearing aid wearer flowing outside the hearing aid case from entering the inside of the hearing aid case. You can

[Brief description of drawings]

FIG. 1 is a perspective view of a lever switch according to a first aspect of the invention.

FIG. 2 is a front view of a lever portion.

FIG. 3 is a side view of a lever portion.

FIG. 4 is a side view of the lever switch.

FIG. 5 is a sectional view of a lever switch.

FIG. 6 is an explanatory diagram of the operation of the lever switch.

FIG. 7 is a partial sectional perspective view of a hearing aid incorporating a lever switch according to the invention of claim 2;

FIG. 8 is a cross-sectional view of the lever switch mounting portion in the front-rear direction,
(A) the lever part is upright, (b) the lever part is tilted

FIG. 9 is a cross-sectional view of the lever switch mounting portion in the left-right direction.

FIG. 10 is a partial cross-sectional perspective view of a hearing aid incorporating a conventional lever switch.

FIG. 11 is a cross-sectional view of a conventional lever switch mounting portion in the front-rear direction.

[Explanation of symbols]

1 ... Hearing aid, 2 ... Hearing aid case, 3 ... Opening,
Reference numeral 5 ... Lever switch, 5a ... Lever portion, 5b ... Outer peripheral surface of lever portion, 7 ... Gap, 7a ... Left / right gap, 7b ... Front / rear gap, 8, 9 ... Projection portion, 8a, 9a ... Left / right projection portion, 8b,
9b ... front and rear protrusions, 11a ... left and right edge portions, 11b ... front and rear edge portions.

Claims (2)

[Claims] 1. A lever switch for rotating a lever part to switch contacts, wherein a plurality of umbrella-shaped protrusions are formed on an outer peripheral surface of the lever part with gaps, and an object to be attached corresponding to the gaps. A lever switch, characterized in that a plurality of edge portions are formed in an opening of an object, and the gap and the edge portion are engaged with each other to be attached to the attachment object. 2. A lever switch in which a plurality of umbrella-shaped protrusions are formed on the outer peripheral surface of the lever portion with gaps, the lever portion protruding from the opening of the hearing aid case, and the lever switch corresponding to the gaps. A hearing aid incorporating a lever switch, wherein the hearing aid is mounted on the hearing aid case by engaging a plurality of edges formed in a case opening with the gap.