JPS5812376Y2 - charger - Google Patents

Description

[Detailed description of the invention] This invention relates to a charger used for electric devices such as electric razors that can be used with both dry batteries and rechargeable batteries.The present invention describes a simple method for fixing a two-piece case and a method for fixing external connection contacts. This is what we provide.

This embodiment will be explained below with reference to the drawings.

Fig. 1 is a longitudinal cross-sectional view of this embodiment, and Fig. 2 is an A-A in Fig. 1.
The sectional view, FIG. 3, is a sectional view taken along line BB in FIG. 1.

The charger 1 consists of a front case 2 and a back case 3, which are split into two parts, and inside the case there are a storage battery 4, a rectifier 24, a power transformer 5 for the step-down part of the power supply, and a rotatable power plug for connecting to an external power supply. 6. Built-in is a pair of plug contacts 8 that conduct to a pair of grab blades I of the power plug 6 when the power plug 6 is rotated and inserted into an outlet, and a plug contact board 9 that supports the contacts.

The support portion of the power plug 6 has a cylindrical convex portion 10 integrally formed at the center of rotation of the power plug, and a rotation support hole 11 in which the cylindrical convex portion 10 is located is provided in the front case, and the cylindrical convex portion 1
A cylindrical recess 12 is provided on the opposite side of the cylindrical convex part 10 so as to have the same rotation axis as the cylindrical convex part 10, and the cylindrical recess 1 that enters the cylindrical opening 12 is provided.
2. A rotation support shaft 13, which is shorter than the depth, is provided on the back case 3,
A coil spring 14 is inserted into the gap between the cylindrical recess 12 and the rotation support shaft 13, so that the C1 power plug 6 is always pressed against the clothing case 2 side, and the power plug 6 is rotated 90 degrees from the charger for charging. In order to secure the power plug 6 so that it does not wobble or fall over when the power plug 6 is moved and plugged into an outlet, the power plug 6 is attached to the front case 2 in the same way as the power plug 6.
A wide power plug fixing recess 15 is provided, and the power plug 6 is dropped into the recess by the spring force of a coil spring 14.

In addition, when storing the power plug 6 in the charger 1 case at the end of charging, press the cylindrical convex part 10 protruding outside of the front case 2 with your finger and remove the power plug 6 from the power plug fixing recess 15. Rotate.

Further, in order to ensure conduction when the charger 1 is set inside the electric razor, a contact (+) 16 is provided at the upper part of the outer shell of the charger 1, and a contact (-) 17 is provided at the lower part.

The contact (+) 15 has both ends formed in the key part 18, and a case recess 19 is provided in the case 2 and the back case 3, and the contact (+) is inserted into the case recess 19 so as to span both cases. While elastically deforming the key part 18 of 16, the contact (+) 16 is fixed to the case.

The contact ( ) 11 has a bent part 21 in a right angle direction with a fixing hole 20 on both sides thereof, and a contact ← ratio convex part 22 protruding from both the group case 2 and the back case 3 is provided. When the case 2 and the back case 3 are stacked together, the contact ←) stop convex portion 22 of both cases is inserted into the fixing hole 20 of the contact ←) 17, and the contact (@11) is fixed to both cases.

Since the upper part of the charger is fixed by contact r+) 16 to fix the group case 2 and the back case 3, the lower part is fixed by the case set screw 23.

Since this screw 23 is screwed in in the direction of the rotation axis of the power plug 6, not only does the joint between the group case 2 and the back case 3 become strong, but even if the power plug 6 is moved by the coil spring 14 and receives elastic force. It can be held without any problem.

Since the embodiment of the present invention is constructed as described above, the contact (+) 160 is fixed to the case in a snap-like manner using the elastic deformation of the key part 18, so it can be securely fixed with a single touch operation during assembly. In addition, by using the elastic force, the group case 2 and the back case 3 of the two-piece case can be drawn into each other, and the case can be fixed.There is no need to further fix the case with screws, and in this embodiment, the lower part of the charger Only the case set screw 23 is used.

Therefore, the number of assembly steps can be reduced.

In addition, the contact point ←) 17 can be easily and securely fixed by simply overlapping both cases so that the contact point ←) stopper convex portion 22 of the group case 2 and back case 3 is inserted into the fixing hole 20 of the bent part. can.

Also, of course, the contact (+) 16 and the contact →17 are connected to the storage battery 4 ((
G) It is necessary to establish continuity between the pole and the lead wire (-) at the sharp bend, but since the contacts (blade 16 and contact ←) can be easily fixed to the case 17, there will be no disconnection of the lead wire. It is possible to prevent this and improve the reliability of the charger.

In this embodiment, the contact (-1-) 16 is fixed to the case using the elastic deformation of the key part 18, but the same effect can be achieved even if a part of the case is made thinner and the elastic deformation of the case is used. effect can be obtained.

As described above, although the present invention has a simple structure, it has excellent advantages.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of this embodiment, and Fig. 2 is an A-A in Fig. 1.
The sectional view, FIG. 3, is a sectional view taken along line BB in FIG. 1...Charger, 2...Group case, 3.
...Back case, 4...Storage battery, 5...
...Power transformer, 6...Power plug, 1.
...Plug blade, 8...Plug contact, 9.
...Plug contact board, 10... Cylindrical convex portion, 11... Rotation support hole, 12... Cylindrical recess, 13... Times Dynamic support shaft, 14...
Coil spring, 15...Power plug fixing recess, 1
6...Contact (-1 (17,-,,, contact←L1
8...Key part, 19...Case recessed part,
20...Fixing hole, 21...Folded portion, 22...Contact ←) Stopper protrusion, 23...
・Case set screw, 24... Rectifier.

Claims (1)

[Scope of utility model registration request] In a charger built into an electrical device, the case consists of a two-part case containing at least a storage battery, a rectifier, a transformer, and a power plug, and a spring is biased between the two-part cases in the direction of the rotation axis. an external connection contact connected to one pole of the storage battery on the upper part of the two-piece case, and a power plug that is rotated by engaging with at least one of the two-piece cases to rotatably hold the power plug. The upper parts of both cases are fixed by elastically engaging the key parts provided at both ends with the recesses provided in each of the two-part cases, and the other pole of the storage battery is connected to the lower part of the two-part case. Another conductive external connection contact is arranged, a bent part bent at right angles is provided on both sides of the contact, and the contact connecting part protruding from both cases is inserted into the fixing hole formed in the bent part to connect the external connection point. A charger characterized in that a connection contact is attached and the two-piece case is fixed by a case set screw arranged in the direction of the rotation axis of the power plug.