JPH0528685Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a battery storage device, and is used, for example, as a charger for secondary batteries such as nickel-cadmium batteries.

(B) Prior art In electrical equipment equipped with a battery storage device, such as a charger, the battery is generally inserted with the battery laid down, as described in Japanese Utility Model Publication No. 57-41954, etc. is normal. However, with this method, when attempting to charge a large number of batteries at the same time, it was necessary to insert the batteries one above the other, making it difficult to insert the batteries.

In order to solve this problem, it is possible to insert the battery vertically as described in Japanese Utility Model Publication No. 55-36938, but how do you insert the electrical contact at the back end of the battery storage recess? The question is how to install it.

(c) Problems to be solved by the invention This invention is mainly designed to allow electrical contacts to be easily attached to a battery storage device in which batteries are inserted vertically.

(ii) Means to solve the problem In this proposal, a small hole is formed at the end of one of a pair of battery storage recesses and a protrusion is formed at the end of the other battery storage recess, and both ends of the metal wire are wound in a spiral shape and each spiral portion is engaged with the small hole and the protrusion, and the approximate center of the metal wire is engaged with a notch formed in the side wall connecting the multiple battery storage recesses, thereby making it possible to easily attach electrical contacts.

(E) Function The spiral parts at both ends of the metal wire are engaged with the small holes and protrusions at the ends of the battery storage recess, and the approximate center part is engaged with the notch, so that the elasticity of the metal wire is improved. As a result, the spiral portions at both ends are pressed against the ends of the battery housing recess, and the electrical contact can be easily attached without using screws or the like.

(F) Embodiment To explain based on the drawings, 1 is a charger consisting of a main body case 2 and a battery case 3. The main body case 2 has a charging plug 4 protruding upward, and the battery case 3 is arranged below. A void space 5 is formed for receiving. The battery case 3 has four cell storage recesses 6, 7, 8, and 9 and four cell storage recesses 10, 11, 12, and 13 opened on its upper surface, and two cell storage recesses 10, 11, 12, and 13. The storage recess and the two cell storage recesses are continuous with each other. As a result, two or four batteries of the same size can be charged at the same time, but batteries of different sizes cannot be charged at the same time. Also, this battery case 3 has its lower end corner 1
4 is pivotally supported at the lower end of the cavity 5 of the main body case, and as shown in FIGS. 1 and 2, after inserting the batteries 15 with the battery case 3 open, the second
When the battery case 3 is pushed into the space 5 as shown by the dotted line in the figure, the upper ends of the batteries 15 come into contact with the electrical contacts 16 and 17 on the main case 2 side.
Also, if battery case 3 is opened more than necessary, battery 1
In order to prevent the main body case 2 from falling, the main body case 2
It is designed so that the stopper 19 on the side is in contact with it.

Of the above-mentioned D and D cell storage recesses,
A recess 6 into which the battery is inserted with its terminal side facing down.
A small hole 20 is drilled in the center of the bottom of each of the recesses 7, 9, and 12 into which the terminal is inserted with the terminal side facing down.
An annular projection 21 is provided at the center of the bottom of each of the parts 11 and 13. Reference numeral 22 denotes a metal wire, at one end of which a small-diameter spiral portion 23 is formed downward, and at the other end a conical spiral portion 24 is formed upward. The small-diameter spiral portion 23 is inserted and fitted into the small hole 20 in the battery housing recess, and the conical spiral portion 24 is engaged with the annular protrusion 21, and furthermore, the small diameter spiral portion 23 is inserted into the small hole 20 in the battery storage recess, and the conical spiral portion 24 is engaged with the annular protrusion 21. The battery storage recesses 6 and 7 are
8, 9, 10, 11, 12, and 13 formed in the lower end of the side wall. As a result, the elasticity of the metal wire 22 strengthens the force of fitting the spiral portions 23 and 24 into the small hole 20 and the engagement force with the annular projection 21, respectively.

When the battery is inserted into the battery storage recesses 6, 7, etc. so that the battery side contacts the small-diameter spiral portion 23 and the battery side contacts the conical spiral portion 24, respectively,
The two batteries are connected in series via metal wire 22. When the battery case 3 is pushed into the recess 5 of the main case, the upper end of each battery comes into contact with the electrical contacts 16 and 17 on the main case side, forming a charging circuit. Since the conical spiral portion 24 itself is elastic, the electrical contact 17 on the main body case side corresponding to it may remain fixed, but the small diameter spiral portion 23 has its spiral portion inserted into the small hole 20 of the battery case. Since they fit together, it is not possible to support the battery elastically, and therefore the corresponding contact 1 on the main body case side
6 must be attached elastically. In addition, in order to prevent a charging circuit from being formed when the battery is inserted backwards into the battery case 3, a step is provided at the lower corner of the battery storage recess 6, 8, 10, 12, into which the battery is inserted with its side terminal facing down. 26 is formed. As a result, if the battery is inserted into this battery storage recess with the battery side facing down, it will hit the stepped portion 26 and cannot be inserted any further, so the side terminals of the battery will be inserted into the small diameter spiral portion 26.
3 and no charging circuit is formed.

(G) Effect As described above, the present invention involves forming both ends of the metal wire into a spiral shape, engaging the spiral portions with the small holes and protrusions of the battery storage recess to form a battery contact, and also forming a coil at approximately the center of the metal wire. Since the metal wire is engaged with the notch in the side wall that connects the two battery storage recesses, the metal wire is held in place by its own elasticity, making it easy to install the battery contacts. It's simple and reliable.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a charger to which the battery storage device of the present invention is applied, Fig. 2 is a side view with main parts cut away, and Fig. 3
The figure is a perspective view of the battery case, FIG. 4 is a plan view of the same, and FIG. 5 is a cross-sectional perspective view of the same essential part. 6...13...Battery storage recess, 22...Metal wire,
23, 24... spiral part, 25... notch, 20...
Small foramen, 21... annular process.

Claims (1)

[Scope of utility model registration request] At least a pair of battery storage recesses, a metal wire that contacts and connects two batteries stored in the recesses, a small hole at the end of one battery storage recess, and a small hole at the end of the other battery storage recess. forming protrusions at the ends of each of the battery storage recesses, and winding both ends of the metal wire in a spiral shape;
engaging each spiral portion with the small hole and protrusion;
A battery storage device characterized in that a substantially central portion of the metal wire is engaged with a notch formed in a side wall connecting the plurality of battery storage recesses.