JPH06196874A - Electric apparatus - Google Patents

Abstract

PURPOSE:To enhance the productivity of an apparatus by sending it to a next process even when a potting liquid is not hardened. CONSTITUTION:An opening part at a case 2 which has housed an electric component at the inside and which has been sealed after an insulating resin 1 has been injected is closed by a lid plate 3. At this time, an elastic sealing material 4 is installed integrally over the whole circumference at the outer circumference of the lid plate 3. The opening part at the case 2 into which the insulating resin 1 has been injected is closed by the lid plate 3, and a part between the outer circumference of the lid plate 3 and the inner face of the case 2 is sealed with the elastic sealing material 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device in which an insulating resin is injected into a case in which electric parts are housed to perform waterproofing and heat dissipation.

[0002]

2. Description of the Related Art Conventionally, in a charging adapter for an electric razor, for example, a potting liquid of an insulating resin is injected into a case containing a circuit board, a chassis block, etc., and naturally cured in a batch furnace for one day to cure the potting liquid. After that, fit the lid plate that will be the back lid into the opening of the case,
The claws of the undercut portion of the cover plate were engaged with the case and joined together.

[0003]

However, in such a conventional example, since the potting liquid cannot be sealed with the lid plate, it cannot be sent to the next step while the potting liquid is cured, and it takes a long time to manufacture. However, there is a problem that productivity is poor due to the above process. The present invention has been made in view of the above problems, and an object of the present invention is to seal a potting liquid of an insulating resin so as not to leak when closed with a lid plate, and the potting liquid does not harden. Even so, it is to provide an electric device that can be sent to the next step and can improve productivity.

[0004]

In order to achieve the above-mentioned object, the electric device of the present invention has a cover plate 3 for accommodating electric parts therein and at the opening of a case 2 sealed by injecting an insulating resin 1. In the electric device closed by, the elastic sealing material 4 is integrally provided on the outer circumference of the lid plate 3 over the entire circumference, and the opening of the case 2 in which the insulating resin 1 is injected is closed by the lid plate 3 and elastically sealed It is characterized in that the material 4 seals between the outer periphery of the lid plate 3 and the inner surface of the case 2.

[0005]

According to the above construction, the insulating resin 1 is provided in the case 2.
If the opening of the case 2 is closed with the lid plate 3 after injecting the potting liquid, the elastic sealing material 4 on the outer periphery of the lid plate 3 is elastically contacted with the inner surface of the case 2 to be sealed so that the potting liquid does not leak. become. Therefore, before the potting liquid is cured, it can be sent to the next step for the next work.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an example of a charger in which a storage battery such as an electric razor or the like and a built-in device are mounted for charging. As shown in FIGS. 3 and 4, the case 2 in which the electric parts are housed is formed in a rectangular box shape having an opening on the back side. A coupling projection 6 is provided on the outer surface of the upper surface opposite to the opening of the case 2 for coupling the main body of the electric razor,
A terminal pin insertion hole 7 is provided in the coupling convex portion 6. Case 2
On the inner surface side of the upper surface portion, two annular grooves 8 are provided in parallel. A positioning rib 9 for positioning the lid plate 3, a fixing rib 11 for positioning and fixing the circuit board 10, and a recess 13 for engaging the hook 12 of the lid plate 3 are provided on the inner surface of the side surface of the case 2. Each is provided with a plurality. Further, a notch 14 through which the cord bushing 15 is inserted is provided at an appropriate position of the case 2, and a concave groove 17 into which the convex rib 16 of the cord bushing 15 is fitted is provided at the inner periphery of the notch 14.

The cover plate 3 is formed in a rectangular plate shape corresponding to the opening of the case 2, and a hook 12 is provided at a position corresponding to the recess 13 of the case. In the portion where the hook 12 is provided, an opening 12a that vertically penetrates is provided on both sides of the hook 12, a hole 12b that vertically penetrates is provided at the base of the hook 12, and a half of the plate thickness of the hook 12 is cut out at the tip of the hook 12. It has a notch 12c. A soft rubber material is integrally molded on the outer periphery of the lid plate 3 to integrally form an elastic seal material 4 as shown in FIG. The elastic sealing material 4 is formed over the entire outer circumference of the lid plate 3, but is provided with a thickness of about half the thickness of the lid plate 3 except for the portion where the hook 12 is present. At a portion where the hook 12 is provided, the elastic sealing material 4 is integrally provided on the upper surface and the lower surface of the hook 12 and the cutout portion 12c.
2b is filled with the elastic seal material 4, and the elastic seal material 4
The ability to fuse to the cover plate 3 is enhanced. Further, the elastic sealing material 4 exposed on the outer surface side at the hook 12 has a function of improving the grounding property and a function of preventing slippage when the charger is assembled and installed.

The terminal base 18 of the three-dimensional chassis structure is provided with two protrusions 19 on the outer circumference in an annular shape so as to cover the entire circumference,
A charging terminal 20 is provided upright in the center, and a lead terminal 21 is provided on the outer circumference. The terminal base 18 is installed inside the case 2, and the charging terminal 20 corresponds to the pin insertion hole 7. With the terminal base 18 housed in the case 2, the two convex portions 19 and the two concave grooves 8 are fitted and sealed to prevent water from entering.

The circuit board 10 is arranged on the terminal base 18 in the case 2, and the circuit board 10 is fixed by being locked to the fixing rib 11. The charging circuit block 24 is mounted on the circuit board 10, and the cord bushing 15 is inserted into the notch 14 to connect the cord 22 to the circuit board 10. In this way, in the state where the electric components are housed in the case 2, alumina particles 23 are loaded into the case 2 as shown in FIG. 5 in order to enhance the heat radiation effect, and the potting liquid of the insulating resin 1 is filled with the alumina particles 23. The case 2 is filled.
After filling the potting liquid, the opening of the case 2 is closed by the lid plate 3 before the potting liquid hardens. Lid plate 3
When the cover plate 3 is attached, the cover plate 3 is positioned by the positioning rib 9, and the hook 12 is engaged with the recess 13 to fix the cover plate 3. When the cover plate 3 is attached, the elastic sealing material 4 elastically contacts the inner surface of the case 2, and the cover plate 3 and the case 2 are reliably sealed. In this way, the potting liquid is assembled as shown in FIGS. 1 and 2, and sent to the next step before the potting liquid is cured, and the next work is performed.

[0010]

As described above, according to the present invention, an elastic seal material is integrally provided on the outer periphery of the lid plate over the entire circumference, and the opening of the case filled with the insulating resin is closed by the lid plate to provide the elastic seal. Since the material seals between the outer periphery of the lid plate and the inner surface of the case,
Since the potting liquid can be sealed so that it does not flow out when the potting liquid of the insulating resin is injected and then closed with the lid plate, it is possible to proceed to the next process without waiting for the potting liquid to harden. Since it can be shortened and productivity can be improved, and since it can be sealed with an elastic sealing material, it can be waterproofed against the intrusion of water.

[Brief description of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention.

FIG. 2 is a side sectional view of the above.

FIG. 3 is a perspective view of the above case.

FIG. 4 is a perspective view seen from a direction different from FIG.

FIG. 5 is a perspective view showing a state in which electric parts are incorporated in the above case.

FIG. 6 is a perspective view of the above terminal base.

FIG. 7 is a perspective view of the above lid plate.

FIG. 8 is a perspective view showing a state in which an elastic sealing material is provided on the lid plate of the above.

[Explanation of symbols]

 1 Insulating resin 2 Case 3 Lid plate 4 Elastic sealing material

Claims (1)

[Claims] 1. An electric device in which an electric component is housed inside and an opening of a case sealed by injecting an insulating resin is closed by a cover plate, and is elastic over the entire circumference of the cover plate. An electric device characterized in that a sealing material is integrally provided, an opening of a case filled with an insulating resin is closed by a cover plate, and an elastic sealing material is used to seal between an outer periphery of the cover plate and an inner surface of the case. machine.