JP2869506B2 - Battery storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery storage device, and more particularly, to a battery storage device suitable for use in a waterproof hearing aid.

[0002]

2. Description of the Related Art Conventionally, in this kind of hearing aid, a waterproof function is realized by increasing the adhesion between respective members. As this type of hearing aid, there is an ear-hearing hearing aid 1 as shown in FIG. 11 (Japanese Patent Publication No. 3-39440, Japanese Utility Model Publication No. 3-6075). That is, in the hearing aid 1, a hook 3 is screwed to a distal end portion of a case 2 formed in a bow shape as a whole. The whole is held at the position behind the auricle of the wearer. By attaching a tube and earplugs (not shown) to the end of the hook 3 in this state, the hearing aid obtained from the earphone is transmitted into the ear hole of the wearer through the sound path, the tube and the earplugs in the hook 3. .

The case 2 is composed of a case body 4, a case cover 5, and a battery cover 7, and the case body 4 has a built-in microphone, a hearing aid processing circuit, an earphone, and the like. The case lid 5 is rotatably attached to the case main body 4 about a rotation shaft (not shown) provided at a tip end position of the case main body 4. Therefore, in the hearing aid 1, the case cover 5 is opened by rotating the case cover 5 in the direction of the arrow a to perform adjustment and repair of each component incorporated in the case main body 4. The battery cover 7 is attached to the base of the case main body 4 so as to be rotatable around the rotation shaft 6 as a rotation center. Accordingly, in the hearing aid 1, the battery is replaced with the battery cover 7 opened by rotating the battery cover 7 in the direction of arrow b.

On the surface of the case lid 5, a volume knob 8 for volume control and a switch knob 9 for switching between a power supply and various functions are provided. These components penetrate through the thickness of the case lid 5 and pass through the case. It is connected to each switch component built in the main body 4. Further, on the surface of the case lid 5, an adjuster cover 10 that protects an adjusting unit that adjusts the hearing aid band and the maximum sound pressure level according to the wearer has a rotating shaft 11.
Is mounted so as to be openable and closable about the center of rotation.

Here, in the hearing aid 1, the case body 4
A seal packing having a shape adapted to each joint is provided at the joint surface between the case and the case lid 5 and at the joint between the case body 4 and the battery cover 7 so as to prevent intrusion of moisture from each joint. Has been made. O-rings are provided between the volume knob 8 and the case lid 5 and between the switch knob 9 and the case lid 5, respectively, whereby a gap between the volume knob 8 and the case lid 5 and the switch knob 9 are provided. Water is prevented from entering through a gap with the case lid 5.

A wind cover 12 for preventing wind noise from entering the microphone is provided at the tip end of the case 2. The hook 3 is screwed into the case body 4 while the window cover 12 is fitted in the case 2. It is sandwiched between the hook 3 and the case 2. That is, in the hearing aid 1, an external sound is introduced into the external sound intake of the microphone through a notch (not shown) formed near the hook 3 of the window cover 12.

Here, a suitable waterproof member made of a filter or the like that allows sound to pass through but does not allow water to pass through is provided in the external sound intake of the microphone, and the waterproof member prevents water from entering the microphone. ing. In this way, in the hearing aid 1, the waterproof seal is provided between the respective members to prevent the intrusion of moisture into the case 2 beforehand.

[0008]

In the case of the hearing aid 1, the seal packing 20 inserted between the case body 4 and the battery cover 7 is evident from FIG.
Is formed in a rectangular frame shape in accordance with the shape of the above-mentioned joint 4A formed at the lower end of the case main body 4 (and the above-described joint 7A formed at the tip of the peripheral side wall of the battery cover 7). Waterproofing is realized by being fitted into a groove (not shown) provided in the joint 7A.

In the hearing aid 1, after the battery cover 7 is closed by rotating in the closing direction indicated by arrow c, the locking knob 21 is rotated in the locking direction indicated by arrow d so that the battery cover 7 is not opened. By locking, the seal packing 20 can be sandwiched between the joint 4A of the case body 4 and the joint 7A of the battery cover 7, whereby the joint 4A of the case body 4 and the joint 7 of the battery case 7 can be held.
It is configured to prevent external moisture from entering the inside of the case 2 from between the points A.

However, in the case of the hearing aid 1 having such a configuration, since the seal packing 20 is formed in a rectangular frame shape, when the battery cover 7 is locked in the closed state, the joint 4A of the case body 4 and the battery cover 4 are closed. Since the magnitude of the force holding the seal packing 20 between the joint 7A and the joint 7A is slightly different between the corners and the sides, the joint 4A of the case body 4 and the joint 7A of the battery cover 7 There is a problem that external moisture easily penetrates into the inside of the case 2 from a portion where the holding force of the seal packing 20 is weak.

Further, according to the method of fitting the battery cover 7 to the case main body 4 about the rotation shaft 6 as a center of rotation, there is a limit to the force for sandwiching the seal packing 20, and accordingly, the extent to which water droplets such as sweat falls. In such a case, it is possible to prevent the infiltration of water, but in use in a pool or a bathroom where waterproofness is required, it is difficult to obtain a pinching force necessary for making the hearing aid 1 waterproof. Atsuta.

As one means for solving these problems, it is conceivable to form a battery cover which is opened and closed for battery replacement separately from the main body of the case, and to provide a waterproof structure using an O-ring.

[0013] This is because the O-ring has no corners, so that even when various methods such as a press-fitting method are applied as a method of mounting the battery cover to the case body, the pressure is applied to the O-ring over one round. Therefore, it is possible to obtain a highly reliable waterproof performance by arranging the battery housing of the hearing aid (hereinafter referred to as a battery housing) in this manner. Conceivable.

[0014] However, the hearing aid is usually used by elderly people who are handicapped. Therefore, when the battery cover of the battery housing is attached to the case body by, for example, a press-fitting method, the hearing aid is particularly used. Removing the battery cover against the elasticity of the O-ring when detaching the battery cover from the case main body has a problem in that it is inconvenient for elderly users.

The present invention has been made in view of the above points, and an object of the present invention is to propose a battery storage device which is easy to use and can obtain a highly reliable waterproofing performance.

[0016]

According to the present invention, there is provided a battery chamber 4 formed on a main body 40 side.
In a battery storage device in which an opening for attaching and detaching a battery of 0A is closed by using a lid-shaped battery cover formed separately from the main body 40, the battery cover is provided on the inner side surface of the battery chamber 40A. A first having inclined surfaces 40CX and 40DX that gradually become higher in the direction of rotation that separates from the chamber 40A;
Provided on the battery cover 42 and the projections 40C, 40D of
The second projections 42A and 42B having the inclined surfaces 42AXA and 42BXA that are gradually higher in the rotation direction for detaching the battery cover 42 from the battery chamber 40A corresponding to the first projections 40C and 40D, the main body 40 and the battery cover. And a waterproof means 45 interposed between the main body 40 and the battery cover 42 to prevent external moisture from entering the battery chamber 40A from the gap between the main body 40 and the battery cover 42, and the battery cover 42 is pivotally disengaged from the battery chamber 40A. When performing, the inclined surface 42 of the second protrusions 42A and 42B
AXA, 42BXA slides the inclined surfaces 40CX, 40DX of the first projections 40C, 40D toward the high direction of the inclined surfaces 40CX, 40DX of the first projections 40C, 40D, thereby moving the battery cover 42 from the main body 40. I tried to make it rise.

Further, in the present invention, the third projection 40B provided on the outer peripheral surface of the battery chamber 40A and the battery cover 42
The battery cover 42 is provided at the peripheral end of the inner surface of the main body 4.
0, a knob 71C that rotates along the outer peripheral surface of the battery chamber 40B, and a third protrusion 40 on one side surface 71CB of the knob 71C that faces the outer peripheral surface of the battery chamber 40A.
B, and the battery cover 42 is
A guide groove 71 </ b> D having an inclined surface 71 </ b> DX that becomes gradually lower in the direction of rotation fitted in the battery cover 4.
When the second cover 2 is mounted on the main body 40, the third protrusion 40B relatively slides along the inclined surface 71DX so that the battery cover 42 is pressed against the main body 40.

A groove 41A provided at a position substantially opposite to the third protrusion 40B and an outer peripheral surface of the battery cover 42, which is a peripheral side surface forming an opening for attaching and detaching the battery of the battery chamber 40A. A fourth projection 71E provided at a position substantially opposite to the knob 71C;
The battery cover 42 is fixed to the main body 40 by fitting the fourth protrusion 71E into the groove 41A when is fitted to a predetermined position of the guide groove 71D.

[0019]

When the battery cover 42 is pivotally separated from the battery chamber 40A, the inclined surfaces 42AXA of the second projections 42A and 42B are removed.
42BXA is the inclined surface 40C of the first protrusions 40C and 40D.
X and 40DX are inclined surfaces 40 of the first protrusions 40C and 40D.
By sliding the battery cover 42 upward from the main body 40 by sliding toward the high direction of the CX, 40DX, the battery cover 42 can be easily detached from the main body 40.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

(1) Overall Configuration of Hearing Aid In FIGS. 1 and 2, reference numeral 30 denotes a waterproof ear-hearing hearing aid as a whole, and a box-shaped case 31 made of a synthetic resin material is provided behind a pinna. The window cover 32 and the hook 33 are integrally attached to the tip of the bow shape so as to conform to the external shape of.

As is apparent from FIG. 2, the case 31 forms an inner peripheral portion and a root portion of the case 31, and is rotatably supported at the tip of the case body 40. , A case cover 41 forming the outer peripheral portion of the case 31 and a battery cover 42 formed at the base of the case body 40 and closing the battery chamber 40A in the columnar space. The battery is assembled as shown in FIG. 1 by screwing it to one end of an electrode 43 protruding inside and mounting it by screwing the battery cover 42 into the case body 40.

In this case, the case body 40 and the case lid 4
A seal packing 44 made of an elastic material (for example, a rubber material) is interposed between the casing body 4 and the case body 4.
Water is prevented from entering the case 31 from the gap between the case 0 and the case lid 41. Similarly, an O-ring 45 made of an elastic material (for example, a rubber material) is inserted between the case body 40 and the battery cover 42, so that a gap between the case body 40 and the battery cover 42 enters the case 31. It is designed to prevent water from entering.

The battery cover 42 has a pair of arc-shaped battery holding walls 42A and 42B projecting from the inner surface thereof, as is apparent from FIG.
The battery can be held inside a space surrounded by 42B (hereinafter, this space is referred to as a battery holding space). Thus, in the hearing aid 30, the battery cover 42
After the battery is fitted in the battery holding space, the battery can be loaded into the battery chamber by attaching the battery cover to the case main body, and thus the signal processing unit 50 housed inside the case 31 can receive the battery. Power can be supplied to the power supply.

In the signal processing section 50, as can be seen from FIG. 2, a gain adjuster 52 and a mode switching switch 5 are provided on a flexible substrate 51 on which a hearing aid processing circuit is formed.
3. The sound signal supplied from the microphone 60 or the induction coil, which is formed by integrally attaching the adjustment trimmer 54 and the electrode 55, is set by operating the gain adjuster 52, the mode switching switch 53, and the adjustment trimmer 54. After hearing aid processing is performed based on the input / output characteristics, the hearing aid is transmitted to the earphone 62.

In this case, in the gain adjuster 52 and the mode switching switch 53, the volume knob 63 and the switch knob disposed on the outer peripheral surface of the case 31 formed by the curved surface of the case lid 41 through the thickness of the case lid 41. 64 with high waterproofness. Thus, in the hearing aid 30, the sound pressure level of the hearing aid output from the earphone 62 can be adjusted by rotating the volume knob 63, and the power supply can be adjusted by operating the switch knob 64. Or switch the mode.

The adjusting trimmer 54 is exposed to the outside of the case 31 through a trimmer opening (not shown) formed on the outer peripheral surface of the case 31. For this reason, the adjuster cover 65 is attached to the outer peripheral surface of the case 31 so as to cover the adjusting trimmer 54 so as to be openable and closable, thereby preventing the adjusting trimmer 54 from being carelessly operated. It has been made like that.

Further, the induction coil is disposed inside the flexible substrate 51 bent in a cylindrical shape, so that the space inside the case 31 can be effectively used. The microphone 60 is attached to a distal end inside the case lid 41.

A waterproof member (not shown) is attached to the tip of the case lid 41 to prevent moisture from entering the inside of the case 31 through the tip of the case lid 41. It is made to be able to do. The earphone 62 is disposed at the tip inside the case main body 40, so that a hearing aid sound based on the output of the hearing aid processing circuit of the signal processing unit 50 can be output to the outside of the hearing aid 30 via the hook 33. ing.

(2) Configuration of Battery Storage Section As shown in FIGS. 3 and 4, the battery cover 42 forming a part of the battery storage section of the hearing aid 30 has a battery cover main body 71 and a disk. Shaped waterproof filter 70
And an annular filter holder 72.
In this case, an annular protrusion 71B is formed to project from the inner surface of a substantially disk-shaped base portion 71A forming the outer surface of the battery cover main body 71, and the above-described battery holding wall 42A is formed on the distal end surface of the annular protrusion 71B. , 42B.

A groove (not shown) is provided around the outer circumference of the annular projection 71B, and the O-ring 45 is fitted into the groove. Further, the annular projection 71
A vent hole 71AX is provided in the center of the base portion 71A surrounded by B to communicate the outside of the case 31 and the battery chamber 40A of the case main body 40.
The external air can be supplied into the battery chamber 40A through the ventilation holes 71AX even when the battery is mounted on the case body 40. Therefore, in this hearing aid 30,
An air battery can be used as a power battery in addition to a mercury battery.

For this reason, a waterproof filter 70 is fixed at the center of the inner surface of the base portion 71A surrounded by the annular projection 71B by using a filter holder 72 so as to close the ventilation hole 71AX. While supplying external air to the inside of the case 31, the external moisture can be prevented from entering the inside of the case 31.

Further, at a part of the inner peripheral portion of the inner surface of the base portion 71A, a distance substantially equal to the thickness of the peripheral side wall of the battery chamber 40A of the case body 40 is located with respect to the annular projection 71B and the battery holding wall 42B. Thus, a substantially triangular prism-shaped knob 71C is formed so as to protrude. This makes this hearing aid 3
0, when the battery cover 42 is attached to and detached from the case main body 40, after the battery cover 40A of the case main body 40 is covered, the battery cover 42 can be easily rotated in a desired direction by using the knob 71C as a clue. .

In this case, the annular projection 71B and the battery holding wall 4
One side 71CA of the knob 71C facing the 2B
This side surface is referred to as an inner side surface 71CA), and an end of a side surface 71CB facing the mounting rotation direction indicated by an arrow e (hereinafter, this side surface is referred to as a mounting rotation direction opposing surface 71CB) is opposite to the mounting rotation direction. A guide groove 71D is provided so as to reach the vicinity of the end on the side surface 71CC facing the detachment rotation direction. The guide groove 71D is provided with a knob 71C from the center thereof.
The side surface 71DX (hereinafter, referred to as a tapered surface) on the side close to the tip of the knob 71C is formed in a tapered shape so that the groove width gradually widens toward the end on the side facing the mounting rotation direction. I have.

As shown in FIG. 5, a pressing projection 40B is provided on the outer peripheral surface of the peripheral wall of the battery chamber 40A of the case body 40 at a position corresponding to the guide groove 71D of the battery cover 42. As a result, in the hearing aid 30, as shown in FIG.
The battery cover 42 is attached to the battery chamber 40A of the case body 40 so as to be positioned in the mounting rotation direction with respect to the second guide groove 71DX.
7A and 8A, the battery cover 42 is sequentially rotated in the mounting rotation direction, so that the pressing projection 40B of the case body 40 is
The second guide groove 71D can be relatively slid along the tapered surface 71DX along the tapered surface 71DX.

In this case, the pressing projection 40B of the case body 40
Is the tapered surface 71D of the guide groove 71D of the battery cover 42.
X relatively slides on the tapered surface 71DX while giving a force acting on the tip of the knob 71C to X. Accordingly, in the hearing aid 30, the battery cover 42 is rotated in the mounting rotation direction from the state shown in FIG. 6A so that the battery cover 42 is pressed against the case main body 40 against the battery cover 42. Can give pressure,
Thus, the O-ring 45 is in the battery chamber 40A of the case body 40.
The battery cover 42 can be fitted into the case body 40 so as to be in close contact with the upper end of the inner wall surface of the battery.

In this case, a locking projection 71E is provided at a peripheral end of a base 71A opposed to a knob 71C of the battery cover 42 through an air hole 71AX, and a battery is provided at a lower end of the case cover 41. The pressing projections 40B of the case body 40 correspond to the locking projections 71E of the cover 42.
A lock notch groove 41A is formed so as to face the battery chamber 40A via the battery chamber 40A.

As a result, in the hearing aid 30, FIG.
The battery cover 42 is further rotated in the mounting rotation direction from the state shown in FIG. 9A, and the pressing protrusion 40B of the case body 40 is completely rotated as shown in FIG.
When the battery cover 42 is fitted to the innermost part of
The locking projection 71E can be fitted into the locking notch groove 41A of the case lid 41, so that the battery cover 42 can be locked in close contact with the case body 40.

In the case of this embodiment in addition to the above configuration, FIG.
As is apparent from FIG. 4, the tip of each of the battery holding walls 42A and 42B of the battery cover 42 is inclined at a predetermined position in the mounting rotation direction so that the height from the base 71A gradually increases. The surfaces 42AXA and 42BXA (hereinafter, these are respectively referred to as the battery cover side inclined surfaces 42AXA,
42BXA), each having a notch 42AX,
42BX are formed.

As is clear from FIGS. 5 and 10, the inside of the battery chamber 40A of the case body 40 is mounted in the mounting rotation direction in accordance with the formation positions and the inclination angles of the battery cover side inclined surfaces 42AXA and 42BXA. Once battery room 40A
Inclined surface 40CX, 4 whose height from the bottom surface is gradually reduced
0DX (hereinafter referred to as case-side inclined surfaces 40CX, 40D
X) is provided in the battery compartment 4.
They are formed so as to face each other around the central axis of 0A.

Actually, each of the cams 40C and 40D has a pressing protrusion 40B of the case main body 40 formed in the guide groove 7 of the battery cover 42.
As shown in FIG. 6B, when the battery cover 42 is positioned on the mounting rotation direction side before being fitted into the 1D, the battery cover-side inclined surfaces 42AXA and 42BXA of the battery cover 42 and the case-side inclined surfaces 40CX and 40DX of the case body 40. Are formed at positions where they contact with each other.

Thus, in the hearing aid 30, when the battery cover 42 is mounted on the case body 40 by rotating the battery cover 42 in the mounting rotation direction, the battery cover 42 is
While the battery cover 42 is not disturbed by the pressing force applied from the pressing projection 40B, the battery cover 42 is rotated in the detaching rotation direction to be detached from the case main body 40. The battery cover 42 slides parallel to the central axis of the O-ring 45 by sliding so that the battery cover-side inclined surfaces 42AXA and 42BXA of 42 rise along the case-side inclined surfaces 40CX and 40DX of the case body 40. It is made so that it can be made to fool. In this case, as is clear from FIGS. 3 and 4, the lower surfaces 42AXB, 42BX of the notches 42AX, 42BY connected to the battery cover-side inclined surfaces 42AXA, 42BXA of the battery cover 42, respectively.
B is formed parallel to the inner surface of the case portion 71A, similarly to the tip surfaces of the battery holding walls 42A and 42B.

As shown in FIGS. 8A and 8B, the notches 42AX and 42BX are
The tip of the pressing projection 40B is the tapered surface 7 of the battery cover 42.
When reaching the innermost portion of 1DX, the tip surfaces of the cams 40C and 40D of the case main body 40 are respectively set to the lower surface 42AX.
B and 42BXB are selected in depth.

Thus, in the hearing aid 30, when the battery cover 42 is mounted on the case main body 40 by rotating the battery cover 42 in the mounting rotation direction, the pressing projection 40 B of the case main body 40 is provided.
After the tip of the battery cover 42 reaches the tapered surface 71DX of the battery cover 42, the tips of the cams 40C and 40D of the case main body 40 are relatively notched 42A of the battery cover 42, respectively.
In order to slide and support the lower surfaces 42AXB, 42BXB of X, 42BX, the battery cover 42 is not fitted into the battery chamber 40A of the case body 40 further deeper. Therefore, in this case, in the hearing aid 30, the pressing projection 40B of the case body 40 is smoothly fitted into the innermost portion of the guide groove 71D of the battery cover 42 by rotating the battery cover 42 at the same depth. Thus, the pressing projection 40B of the case body 40 can be prevented from being carelessly removed from the guide groove 71D of the battery cover 42 (FIGS. 6A and 6B).

(3) Operation of Embodiment In the above configuration, the pressing protrusion 40B of the case body 40
Are positioned in the mounting rotation direction with respect to the guide groove 71D of the battery cover 42, and the battery cover-side inclined surfaces 42AXA, 42BXA of the battery cover 42 are in contact with the case-side inclined surfaces 40CX, 40DX of the case body 40. When the battery cover 42 is placed over the battery chamber 40A of the case body 40, the tips of the cams 40C and 40D of the case body 40 contact and are supported by the tips of the battery holding walls 42A and 42B of the battery cover 42. On the other hand, the battery cover 42 is held in a state where the O-ring 45 does not fit into the upper end of the inner wall surface of the battery chamber 40A of the case main body 40 and is floated.

When the battery cover 42 is rotated in the mounting rotation direction from this state, the battery cover-side inclined surfaces 42AXA and 42BXA of the battery cover 42 start contacting the case-side inclined surfaces 40CX and 40DX of the case body 40 (FIG. 7). (A) and FIG. 7 (B)), the pressing protrusion 40B of the case body 40 is formed.
Fits into the guide groove 71D of the battery cover 42 (FIG. 7).
(A) and FIG. 7 (B)). Thereafter, the battery cover 42 of the case main body 40 is moved based on the pressing force applied from the pressing projection 40B of the case main body 40 in accordance with the rotation amount.
It is pressed into A and is fitted. At this time, the inclined surface 42AXA, 42BXA of the battery cover 42 on the battery cover side.
Are the case-side inclined surfaces 40CX, 40D of the case body 40.
X slides and descends in the direction of the battery chamber 40A of the case main body 40 along the case-side inclined surfaces 40CX and 40DX.

When the battery cover 42 is further rotated, the tips of the cams 40C and 40D of the case body 40 are
2 notch 42AX, low surface 42AXB of 42BX,
42BXB (FIG. 8A and FIG.
(B)) Then, the tips of the cams 40C and 40D are connected to the lower surfaces 4 of the notches 42AX and 42BX of the battery cover 42.
The battery cover 42 slides relatively on the 2AXB and 42BXB to support it, so that the battery body 42 is deeper than this.
The battery case 40A rotates without being pushed into the battery chamber 40A, the pressing protrusion 40B of the case body 40 thereafter fits into the innermost part of the guide groove 71D of the battery cover 42, and the locking protrusion 71E of the battery cover 42 The battery cover 4 is inserted into the locking hole 41A of the lid 41 so as to be fitted.
2 is locked (FIGS. 9A and 9B).

On the other hand, when the battery cover 42 is rotated in the detaching rotation direction from this state, the pressing projection 40 of the case body 40 is rotated.
B comes out from the innermost part of the guide groove 71D of the battery cover 42, and the locking projection 71E of the battery cover 42 comes out of the locking hole 41A of the case lid 41, whereby the locking of the battery cover 41 is released. Until the battery cover-side inclined surfaces 42AXA and 42BXA of the battery cover 42 contact the case-side inclined surfaces 40CX and 40DX of the case main body 40 (in this case, the pressing protrusions 40B of the case main body 40).
Is the tapered surface 7 of the guide groove 71D of the battery cover 42.
8 (A) and FIG. 8 (A).
(B)) The battery cover 42 rotates while being pressed against the case body 40.

After the battery cover-side inclined surfaces 42AXA and 42BXA of the battery cover 42 come into contact with the case-side inclined surfaces 40CX and 40DX of the case body 40, the battery cover 4
2 so that the battery cover-side inclined surfaces 42AXA, 42BXA rise along the case-side inclined surfaces 40CX, 40DX of the case body 40 toward the distal ends of the cams 40C, 40D of the case body 40. The battery cover 42 slides so that the pressing projection 40B of the case main body 40 moves in the direction of coming out of the tapered surface 71DX of the guide groove 71D of the battery cover 42 so that the battery cover 42 moves in the central axis direction of the O-ring 45. An abutment comes from 40 (FIGS. 7A and 7B).

When the battery cover 42 is lifted, the pushing projections 40B of the case body 40 are disengaged from the guide grooves 71D of the battery cover 42, and the tips of the battery cover-side inclined surfaces 42AXA and 42BXA of the battery cover 42 are connected to the case body 40.
6 (A) and 6 (B) until the tip of the cams 40C, 40D of the case body 40 comes into contact with the battery cover 4.
The battery cover 42 slides on the tip end surfaces of the battery holding walls 42A, 42B of the second case 2 so as to support the battery cover 42.
Is held in a state where it floats from the surface.

Therefore, in this hearing aid 30, the battery cover 4
When the battery cover 42 is detached, the battery cover 42 is rotated only by a slight angle in the detachment rotation direction.
Is raised from the case body 40 in the direction of the center axis of the O-ring 45, so that the battery cover 42 above the O-ring 45 rises from the battery chamber 40A. Can be easily attached and detached.

In the hearing aid 30, the battery cover 42
By using the O-ring 45 as a waterproof seal between the case body 40 and the case body 40, the waterproof performance can be improved.

(4) Effects of the Embodiment According to the above configuration, the cam 4 having the case-side inclined surfaces 40CX and 40DX inside the battery chamber 40A of the case body 40.
0C and 40D, and correspondingly, the battery cover side inclined surfaces 42AXA and 42BXA are formed on the battery holding walls 42A and 42B of the battery cover 42, so that an O-ring is used as a waterproof seal. Also in this case, the attachment / detachment of the battery cover 42 can be facilitated, and thus the battery housing portion of the hearing aid 30 which is easy to use and can obtain a highly reliable waterproof performance can be realized.

(5) Other Embodiments In the above embodiment, two cams 40C and 40D are formed on the battery chamber 40A side of the case body 40,
Corresponding to this, the battery holding wall 42A of the battery cover 42,
Although the case where two notches 42AX and 42BX are formed in 42B has been described, the present invention is not limited to this, and the number of cams 40C and 40D and the corresponding number of notches 42AX and 42BX of the battery cover 42 corresponding thereto are as follows. Both may be numbers other than two, for example, one or three or more.

In the above embodiment, the knob 71
While forming the notch groove 71D in the inner side surface 71CA of C,
Although the case where the protrusion 40B is formed on the outer peripheral surface at the lowermost end of the case body 40 corresponding to the notch groove 71D has been described, the present invention is not limited to this, and the protrusion is formed on the inner surface 71CA of the knob 71C. Alternatively, a groove having a tapered shape or an inclined angle may be formed at the root of the case body 40 corresponding to the projection.

Further, in the above-described embodiment, the case where the O-ring 45 is used as the waterproof means between the battery cover 42 and the case body 40 has been described. However, the present invention is not limited to this, and the cross-sectional shape is not limited to this. A waterproof member formed of an elastic material other than a circle, such as a home base type, can be used.

Further, in the above-described embodiment, the notches 42A are formed in the battery holding walls 42A and 42B of the battery cover 42.
X, 42BX to form the battery cover 42
Although the case where the battery cover side inclined surfaces 42AXA and 42BXA are formed on the battery cover 42 is described above, the present invention is not limited to this.
The slanted surface on the battery cover side may be formed by forming an elongated plate-shaped protrusion without forming B, and tapering the tip of the protrusion. Various methods can be applied as a method of forming the.

Further, in the above-described embodiment, the case where the present invention is applied to the hearing aid 30 has been described. However, the present invention is not limited to this, and may be applied to other electronic devices using a battery such as a radio. Are also suitable.

[0059]

As described above, according to the present invention, the opening for attaching and detaching the battery of the battery chamber formed on the main body side is closed using the lid-shaped battery cover formed separately from the main body. In the battery storage device, a first protrusion having an inclined surface gradually increasing in a rotation direction for detaching the battery cover from the battery chamber is formed on an inner surface of the battery chamber, and a first protrusion is formed on the battery cover.
A second projection having an inclined surface that gradually becomes higher in the direction of rotation that separates the battery cover from the battery chamber corresponding to the projection is formed, and waterproof means is inserted between the main body and the battery cover. As a result, the battery cover can be easily detached from the main body, and thus a battery housing device that is easy to use and that can obtain highly reliable waterproof performance can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an overall configuration of an ear-hearing hearing aid according to one embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the overall configuration of an ear-hearing hearing aid according to one embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a configuration of a battery cover.

FIG. 4 is a perspective view illustrating a configuration of a battery cover.

FIG. 5 is an exploded perspective view illustrating a configuration of a battery storage unit.

6A and 6B are a perspective view and a plan view for explaining attachment and detachment of a battery cover to and from a case body.

7A and 7B are a perspective view and a plan view for explaining attachment and detachment of a battery cover to and from a case body.

8A and 8B are a perspective view and a plan view for explaining attachment / detachment of the battery cover to / from the case body.

9A and 9B are a perspective view and a plan view for explaining attachment and detachment of a battery cover to and from a case body.

FIG. 10 is a cross-sectional view for explaining the inside of the battery chamber of the case body.

FIG. 11 is a perspective view showing a conventional waterproof hearing aid.

FIG. 12 is a perspective view for explaining a seal packing between a battery cover and a case main body of the hearing aid shown in FIG. 11;

[Explanation of symbols]

1, 30 ... hearing aid, 40 ... body (case body), 4
0A: battery chamber, 40B: third protrusion (pressing protrusion),
40C, 40D: first projection (cam), 40CX, 4
0DX: inclined surface (case-side inclined surface), 41: groove (locking groove), 42: battery cover, 42A, 42B ...
Second protrusion (battery holding wall), 42AXA, 42BXA ...
... Slope (battery cover side slope), 71C ...
71CB: one side (inner side), 71D: guide groove,
71DX: inclined surface (tapered surface), 71E: fourth protrusion (locking protrusion).

Claims (3)

(57) [Claims] 1. A battery storage device for closing an opening for attaching and detaching a battery in a battery chamber formed on a main body side by using a lid-shaped battery cover formed separately from the main body. A first projection provided on the inner side surface and having an inclined surface gradually increasing in a rotation direction for detaching the battery cover from the battery chamber; and a first projection provided on the battery cover and corresponding to the first projection. A second protrusion having an inclined surface that gradually becomes higher in a rotation direction in which the battery cover is detached from the battery chamber; and a second protrusion that is interposed between the main body and the battery cover, and that is interposed between the main body and the battery cover. Waterproof means for preventing external moisture from entering the battery chamber, and when the battery cover is pivotally separated from the battery chamber, the inclined surface of the second projection is formed by the first projection. The inclined surface is the first Battery housing device for causing rise parsley the battery cover from the body by which One suited to high altitude direction of the inclined surface of the protrusion slides. 2. A battery according to claim 1, further comprising: a third protrusion provided on an outer peripheral surface of the battery chamber; and a peripheral end provided on an inner side surface of the battery cover, wherein the battery cover is attached to or detached from the main body. A knob that rotates along the outer peripheral surface of the chamber; and a side surface of the knob that faces the outer peripheral surface of the battery chamber, which is provided corresponding to the third protrusion, and fits the battery cover into the battery chamber. And a guide groove having an inclined surface that is gradually lowered toward the turning direction in which the third protrusion is relatively slid along the inclined surface when the battery cover is rotationally mounted on the main body. 2. The battery storage device according to claim 1, wherein the battery cover is press-fitted to the main body. 3. A battery according to claim 1, further comprising: a groove provided at a position substantially opposite to said third protrusion; a groove provided at a position substantially facing said third projection; and an outer peripheral surface of said battery cover. A fourth projection provided at a position substantially opposite to the knob;
3. The battery cover according to claim 2, wherein the battery cover is fixed to the main body by fitting the fourth protrusion into the groove when the protrusion is fitted to a predetermined position of the guide groove. Battery storage device.