JPH0615399Y2 - Structure of battery compartment in battery-equipped devices - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention relates to improvement of the structure of the battery storage portion in various devices such as portable electric lights, radios, and tape recorders that use a battery as a power source. The structure will allow the use of both type 2 and size AA batteries.

<< Prior Art >> In a conventional device that uses a battery as a power source, the type and type of battery to be used are specified. For example, in the case of a device that uses two single type batteries, the structure of the battery storage section is The form is adapted to it. Therefore, for example, the battery is exhausted while using the device for single type battery, and there is no new single type battery, but there is a single type 2 or size 3 type battery. However, since the structure of the battery housing is not designed to be able to set batteries of AA type or AA type, it was not possible to substitute these.

In view of this, Japanese Utility Model Laid-Open No. 62-76465 proposes a structure of a battery storage portion as shown in FIG. 3 which enables use of any type of battery such as single type, size D2 and size AA batteries. .
The structure shown in FIG. 3 has a tubular body 30 having an inner diameter slightly larger than the outer diameter of the single type battery, and three grooves 31 formed in the wall portion of the tubular body 30 at 120 ° intervals in parallel to the axial direction. The cylinder 30
Of the movable spacers 32 slidably inserted in the respective grooves 31 in the radial direction, and an elastic body 33 for constantly urging the movable spacers 32 from the back portion thereof toward the center of the cylindrical body 30.
It has and. Any of the single type battery B1, the AA type battery B2, and the AA type battery B3 can be concentrically held in the cylindrical body 30 by the tip portions of the three movable spacers 32.

<< Problems to be Solved by the Invention >> In the conventional technique shown in FIG.
Has a structure in which the cylindrical body 30 is moved in and out in the radial direction, and the elastic body 33 is provided on the back portion of the movable spacer 32, so that there is a drawback that the outer dimensions of the battery storage portion become very large.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to use any of a single type battery, an AA type battery, and an AA type battery, and moreover, the size of the battery storage portion as a whole. To make it smaller.

<< Means for Solving the Problems >> The structure of the battery housing according to the present invention has a triangular tubular body having an internal cross-sectional shape of a substantially triangular shape, and the base end is attached to each of the three corners of the triangular tubular body. , Three leaf springs for pressing the battery peripheral surface, the tip side of which extends toward each inner side surface of the triangular tubular body and are biased toward the center, and the leaf springs, which are disposed on the end surface portion of the triangular tubular body. And a spring for pressing the end surface of the battery.

<< Operation >> The three leaf springs are deformed according to the diameters of the single-type battery, the AA-type battery, and the AA-type battery, and any of the batteries is pressed against the central portion of the triangular cylinder by the leaf spring. Retained.

<< Embodiment >> FIG. 1 and FIG. 2 show a portable electric lamp adopting the structure of the battery housing according to an embodiment of the present invention. In the figure, reference numeral 1 denotes a plastic triangular cylinder whose internal cross-sectional shape is substantially triangular, and an illuminating section 2 is integrally provided at one end thereof. The illumination unit 2 is provided with a light bulb 3, a reflecting mirror 4, a lens 5 and the like. The other end of the triangular tubular body 1 is open, and the lid 6 is detachably attached thereto.
The lid 6 and the triangular tubular body 1 constitute a battery storage section as follows.

The internal dimensions of the triangular tubular body 1 are such that the single battery B1 can be accommodated with a certain amount of margin, and spring support shafts 7 are provided integrally with the triangular tubular body 1 at the three inner corners, respectively. ing. A leaf spring 8 bent into a substantially J-shape is attached to each spring support shaft 7. The leaf spring 8 is attached so as to wind around the spring support shaft 7, and the attachment point of the spring support shaft 7 is the base end of the spring. The tip (free end) side of the leaf spring 8 extends to the inner side surface of the triangular tube body 1 and is biased toward the center of the triangular tube body 1 by the elastic force of the spring.

When the single-type battery B1 is used, the battery B1 is pushed into the triangular tube body 1 by pushing each leaf spring 8 outward. Then, the three leaf springs 8 press the peripheral surface of the battery B1, and the battery B1 is stably held. When the AA battery B2 is used, when the battery B2 is pushed into the triangular tube body 1 in the same manner, the leaf spring 8 is displaced toward the center side as compared with the case of the single battery B1, and the peripheral surface of the battery B2 is also changed. It is pressed by the three leaf springs 8. Thereby, the battery B2 is also stably held in the central portion of the triangular tube body 1. The same applies to AA batteries.

A coil spring 9 for pressing the battery end surface is provided on the inner surface side of the lid 6.
Is attached, single type battery B1, AA type battery B
2. Regardless of which of the AA size batteries B3 is housed, the center part of one end face of these batteries is pressed by the coil spring 9, and the terminal face at the other end is at the boundary between the triangular tube body 1 and the illumination part 2. The contact piece 10 is pressed. The contact piece 10 is directly connected to one terminal of the light bulb 3. The coil spring 9 is electrically conductive and is connected to the other terminal of the light bulb 3 by an internal wiring (not shown) including a switch.

<< Advantages of the Invention >> As described in detail above, in the structure of the battery housing according to the present invention, the base ends are attached to the three corners of the triangular tube, and the tips are on the inner surface side of the triangular tube. Since the peripheral surface of the battery is pressed by the three leaf springs that extend toward the center and are urged toward the center, the triangular cylinder need only be a little larger than the largest single-type battery. The leaf spring is housed in a gap formed between the cylindrical body and the single type battery. Therefore, the size of the battery compartment is much smaller than that of the conventional structure.
Any of the AA batteries can be stably held.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a portable electric lamp adopting a battery housing according to an embodiment of the present invention, FIG. 2 is a lateral sectional view of the same battery housing, and FIG. 3 is a lateral sectional view of a conventional battery housing. Is. 1 ... Triangular cylinder, 2 ... Illumination part 3 ... Light bulb, 4 ... Reflecting mirror 5 ... Lens, 6 ... Lid 7 ... Spring support shaft, 8 ... Leaf spring 9 ... Coil spring, 10 ... ... Contact piece B1 ... single type battery B2 ... single type 2 battery B3 ... size 3 type battery

Claims (1)

[Scope of utility model registration request] 1. A triangular tubular body having a substantially triangular internal cross-section, and a base end attached to each of the three corners of the triangular tubular body, the tip side extending to each inner side surface side of the triangular tubular body. In a device with built-in battery including three leaf springs for pressing the battery peripheral surface biased toward the center and a spring for pressing the battery end surface arranged on the end surface of the triangular cylinder. Storage structure.