JPH0117091Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a battery housing case used for incorporating a battery that supplies DC power to a small electrical device into a small electrical device.

An example of the above-mentioned small electric device is a wireless microphone. The batteries used in such wireless microphones are small, high output,
It is necessary to have a long lifespan, so 006P
Square type batteries are often used. but,
The 006P type battery is relatively expensive, and it is desirable to use an inexpensive cylindrical battery. Cylindrical batteries have low output, so multiple batteries must be used, and cylindrical batteries are relatively large, making it difficult to accommodate them in a wireless microphone with high density. was difficult.

The object of this invention is to provide a battery housing case that can house a plurality of cylindrical batteries in a small electric device with high density.

Hereinafter, this invention will be explained in detail based on an illustrated example in which this invention is implemented in a wireless microphone. In FIG. 1, reference numeral 1 denotes a head case in which a microphone element (not shown) is accommodated. A female thread (not shown) is formed on the inner peripheral surface of the rear end of the head case 1, and is screwed into a male thread 3 formed on the outer peripheral surface of the front end of the short tubular connector 2. A female thread (not shown) is formed on the inner circumferential surface of the rear end of the connector 2 , and is screwed into a male thread 5 formed on the outer circumferential surface of the front end of the battery housing case 4 . At the front end of the battery housing case 4,
Support protrusions 6, 6 are protruded so as to penetrate into the connector 2, and protrusions 9, 9 of the low-circumference circuit board 8 are inserted into long holes 7, 7 formed in these protrusions 6, 6. The low frequency circuit board 8 is supported within the connector 2. A high frequency circuit board holding section 10 is coupled to the rear end of the battery housing case 4, and a high frequency circuit board 11 is held within this holding section 10. A cylindrical outer shell 12 is arranged to surround the battery housing case 4 and the high-frequency circuit board holder 10, and a female thread 13 is formed on the inner circumferential surface of the front end of the outer shell 12, and a female thread 13 is formed on the outer circumferential surface of the rear end of the connector 2. It is screwed into a male screw 14 provided therein.

The battery storage case 4 includes two discs 16 arranged at a distance approximately equal to the length of AAA batteries,
18, and three frames 20, 22, 24 provided so as to straddle the discs 16, 18. As shown in FIG.
These batteries 26, 30 are bundled so that their central axes are located at each vertex of an equilateral triangle.
It is formed into a disk corresponding to the circumscribed circles of 28 and 30. The frame 20 is provided near a contact point between the peripheral edge of the battery 26 and the peripheral edge of the battery 28, and is in contact with a portion of the peripheral edge of the batteries 26 and 28, respectively. Similarly, the frame 22 is provided near the contact point between the peripheral edge of the battery 26 and the peripheral edge of the battery 30, and is in contact with a portion of the peripheral edge of the batteries 26 and 30, respectively. Further, the frame 24 is provided near the contact point between the peripheral edge of the battery 28 and the peripheral edge of the battery 30, and is in contact with a portion of the peripheral edge of the batteries 28 and 30, respectively. Therefore, the battery 26 is connected to the frame 2
The battery 28 is taken in and taken out laterally from the space between the frames 20 and 22, and the battery 30 is taken in and taken out laterally from the space between the frames 24 and 22. Frame 20,2
In the middle of 2, as shown in FIG.
Elastic claws 32, 3 for pressing 8, 30 inward
4 is formed, and a groove 36 is formed on the outside of the frame 24 for passing a lead wire connecting the low frequency circuit board 8 and the high frequency circuit board 11.

In addition, 37, 37, 37 shown in FIG. 1 are contact fittings for the negative electrode, 38, 38, 38 are contact fittings for the positive electrode, and these are insertion holes 40, 40, 40 formed in the disks 16, 18, respectively. , 42, 42, 42, and soldered to disk-shaped printed circuit boards 44, 46 provided on the outside of the disks 16, 18.

The battery housing case 4 configured in this way has a first
It is manufactured from ABS resin using a total of three molds: two molds 48 and 50 shown in FIG. 0 and FIG. 11, and a mold for forming the protrusion 6 (not shown).
If the projecting piece 6 is not formed, of course two molds 4 are used.
Manufactured by 8,50.

This battery storage case 4 contains three batteries 26, 2.
Each battery 26, 28, 30 is bundled so that their axes are parallel to each other and the center axis of each battery 26, 28, 30 is located at each vertex of an equilateral triangle.
Since the discs 16, 18 are configured such that the peripheral edges of the batteries 6, 28, 30 are in contact with the discs 16, 18, the batteries 26, 28, 30 can be housed in high density. In other words, if three batteries are arranged in parallel, and the radius of the batteries is R, the storage case will be at least
In this battery case 4, the diameter of the discs 16 and 18 is 2 (R + 2R x sin60° x 2/3)≒ as is clear from Fig. 8.
4.3R, the battery case 4 is densely packed with batteries 26,
It can accommodate 28,30. Moreover, in this battery case 4, the batteries 26, 28, and 30 can be taken in and out from the sides of the battery case 4, so that electronics can be placed on the front side of the disk 16 and on the rear side of the disk 18 as in this embodiment. Circuits etc. are provided, and the discs 16, 18
Even if the battery cannot be inserted or removed from the side, the battery can be easily inserted or removed.

In the above embodiment, the battery case according to this invention was incorporated into the wireless microphone.
The battery housing case according to this invention can also be used when a battery is incorporated into a small electric device other than a wireless microphone.

[Brief explanation of the drawing]

Figure 1 is an assembly diagram of a wireless microphone incorporating a battery housing case according to this invention, Figure 2 is a front view of the case, Figure 3 is a plan view of the case,
Figure 4 is a rear view of the case, Figure 5 is a right side view of the case, Figure 6 is a bottom view of the case, Figure 7 is a vertical side view of the case, and Figure 8 is the same as Figure 3. A-A
An enlarged cross-sectional view, FIG. 9 is a BB sectional view of FIG. 3, FIG. 10 is a sectional view of a mold for manufacturing the same case, corresponding to FIG. 8, and FIG. 11 is a cross-sectional view of the mold for manufacturing the same case. FIG. 9 is a sectional view corresponding to FIG. 9 of the mold for the mold. 16, 18... Disk, 20, 22, 24... Frame, 26, 28, 30... Battery.

Claims (1)

[Scope of utility model registration request] Two discs are arranged at a distance approximately equal to the length of a cylindrical battery, and these discs are arranged so that the axes of the battery are parallel to each other and the center axis of the battery is at each vertex of an equilateral triangle. When three batteries are arranged in a bundle, the two discs are formed to a size that forms the circumscribed circle of each battery, and each battery surrounded by the periphery of each battery and the disc is A battery accommodating case comprising three frames, each of which is in contact with a part of the periphery of the adjacent two batteries in the vicinity of the contact point of the two adjacent batteries in the space, and provided astride between the two discs. .