JPH04131861U - charger - Google Patents

Abstract

(57) [Summary] [Purpose] Even if water enters the outlet or electrolyte leaks from the storage battery, short circuits and corrosion will not occur. [Structure] A bottomed cylindrical insertion opening 13 into which a storage battery is inserted is formed in the upper housing 11 of a housing divided into upper and lower halves, and a water drain hole 14 which also serves as the insertion hole for the charging terminal 31 is formed in the bottom part, and the lower housing 12 Drain tube 15 whose lower end is open and whose upper end fits into the outer circumference of the lower end of the insertion port 13 to fix the charging terminal 31.
is formed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a charger for charging storage batteries used in rechargeable power tools, etc. It is.

0002

[Conventional technology]

As this type of charger, one shown in FIG. 6 has been conventionally used. This is the top A step-down transformer 2 and a charging circuit are mounted inside the housing 1, which is formed by dividing the bottom into two parts. A storage battery is inserted into the upper housing 11. A cylindrical plug-in port 13 with a bottom is open, and a charging port 13 that is erected from the circuit board 3 is opened. Electrical terminals 31, 31 are located within the insertion port 13.

0003

[Problem that the idea aims to solve]

In this case, there is an opening at the bottom of the outlet for inserting the charging terminal 31. Since the circuit board 3 is located below this opening, the charger cannot be used outdoors. If water enters from the outlet 13 while the charging circuit is being I end up eating it.

0004 This invention was devised in consideration of these points, and its purpose is to Even if the battery gets into the socket or the electrolyte from the storage battery leaks, it will not cause short circuit or corrosion. Our goal is to provide you with a charger that never breaks.

[0005]

[Means to solve the problem]

However, the present invention has a housing that is divided into upper and lower halves, and the upper housing is used to store electricity. It forms a cylindrical outlet with a bottom into which a battery is inserted, and a charging terminal is inserted at the bottom. A water drain hole is formed that also functions as a water drain hole, and the lower end is open in the lower housing while the upper end is open. is fitted to the outer periphery of the lower end of the socket to form a drainage pipe that secures the charging terminal. It is characterized by its presence.

[0006] According to this invention, even if water enters the outlet, this water will flow through the drain hole and into the drain pipe. It is discharged to the outside through.

[0007]

【Example】

The present invention will be described in detail below based on the illustrated embodiment. A housing 1 containing a transformer 2 and a circuit board 3 is connected to an upper housing 11 and a lower housing 1. The top housing 12 is divided into upper and lower halves, and the upper surface of the upper housing 11 is A cylindrical outlet 13 with a bottom is formed at the bottom of the outlet 13. The drain hole 14 is open. In the lower housing 12, the above-mentioned insert is inserted. A drainage tube 15 that opens upward and downward is formed in a portion corresponding to the opening 13.

[0008] The drain pipe 15 here has an upper end that fits into the lower end outer circumference of the insertion port 13. , At this time, the charging terminal 31 disposed inside the outlet 13 through the drain hole 14, 31 is clamped and fixed between the outer surface of the insertion port 13, and the Water that has entered from the port 13 is discharged downward to the outside from the drain hole 14 through the drain pipe 15. It is now possible to do so. The circuit board 3 surrounds the drain pipe 15 as shown in FIG. Because the circuit board 3 is placed in the This means that there is no contact with the liquid, and the diameter of the drain pipe 15 is narrower towards the lower end. Because it has a conical cylindrical shape, water can be drained quickly.

[0009] 4 in the figure is a light emitting diode for displaying when charging is in progress, and this light emitting diode After assembling the upper and lower housings 11 and 12, the door 4 is installed on the upper housing 11 side. By being arranged in the hole 16, the lead wire 40 of the light emitting diode 4 is connected to the circuit board 3. It is designed to be connected to the connector 33 of. This is a light emitting diode on the circuit board 3. After installing the diodes 4, I assembled the upper and lower housings 11 and 12. In this case, as shown in FIG. 6, the upper housing 11 hits the light emitting diode 4 and the light is emitted. Considering that the photodiode 4 may fall down, the upper and lower housings 11, 1 The installation is done after the assembly of step 2. In addition, light emitting diode 4 is waterproofed by covering it with a transparent seal 44.

0010

[Effect of the idea]

As described above, with this invention, even if water enters the outlet, this water will be drained out. It is discharged outside through the drainage pipe through the hole, and water and storage batteries are discharged outside. The charging circuit will not be short-circuited or corroded due to liquid leakage. .

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one embodiment.

FIG. 2 is a perspective view of the same as above.

FIG. 3 is a partial plan view of the same as above.

FIG. 4 is a sectional view of the light emitting diode mounting portion same as above.

FIG. 5 is a longitudinal cross-sectional view of the same as the above during charging.

FIG. 6 is a sectional view of a conventional example.

[Explanation of symbols]

11 Upper housing 12 Lower housing 13 Inlet 14 Drain hole 15 Drain pipe 31 Charging terminal

Claims (1)

[Scope of utility model registration request] Claim 1: A bottomed cylindrical insertion opening into which a storage battery is inserted is formed in the upper housing of a housing divided into upper and lower halves, and a water drain hole which also serves as the insertion hole for the charging terminal is formed in the bottom part, and the lower end is formed in the lower housing. A charger that is open and forms a drainage tube whose upper end fits into the outer circumference of the lower end of the insertion port and fixes the charging terminal.