JPH0636629Y2 - Waterproof electronics - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a waterproof electronic device suitable for a radio receiver, a CB radio receiver or the like that can be used underwater.

[Outline of device]

INDUSTRIAL APPLICABILITY The present invention is a waterproof electronic device suitable for a radio receiver, a CB wireless receiver, etc. that can be used underwater, and has a hole for airtightness check in the cabinet. By arranging the variable electric element such as a switch and volume at the position corresponding to the check hole, the variable electric element can be operated without providing a special configuration for operating this element, and the operation of this variable electric element can be performed. Even if it is performed, the airtightness is not likely to deteriorate.

[Conventional technology]

Conventionally, a waterproof compact radio receiver that can be used underwater as shown in FIG. 6 can be considered. In the small radio receiver shown in FIG. 6, the lower cabinet (1) and the upper cabinet (2) form a cabinet of this waterproof receiver. That is, the joint surface (1a) of the lower cabinet (1) and the joint surface (2a) of the upper cabinet (2) are separated by an O-ring (3).
By adhering via the above, a waterproof structure for maintaining the airtightness inside the cabinet is provided. Inside the cabinet, the printed circuit board (4) is fixed to the projections (1c) and (1d) of the lower cabinet (1) with screws (5a) and (5b) by screws. (4) Arrange the components such as the IC (6) that compose the receiving circuit of the radio receiver along the predetermined wiring pattern. Then, this radio receiver is adapted to listen to the received signal through the earphone (7). For this reason, the earphone wire (8) whose one end is soldered to the printed circuit board (4) is provided from the inside of the cabinet to the lower cabinet (1) through the lead-out hole (1).
The earphone (7) is attached to the tip of the earphone wire (8) by being led out to the outside via b). And in order to maintain the airtightness inside this cabinet,
b) is covered with a sealant (10). In addition, there is a small hole (2b) for checking the airtightness of a few mm in diameter at a predetermined position of the cabinet, for example, the upper surface of the upper cabinet (2)
Airtightness is checked using this small hole (2b).
That is, in the water, air is sucked into the cabinet from the small hole (2b) by a pump or the like, and air leakage is checked,
The airtightness of the waterproof structure is checked by sucking air from the small hole (2b) with a pump or the like to check the degree of vacuum. After the check, a plug (11) made of rubber or the like is attached to the small hole (2b) via a filler or an adhesive to waterproof the small hole (2b).

[Problems to be solved by the invention]

By the way, in such a radio receiver, in addition to a switch that is always operated, such as a power switch that turns on / off a power source, there is a switch that is rarely operated depending on a use state. For example, the switch (12) of the mute circuit that automatically enters the mute state when the received signal is weak to prevent noise is turned off only when it is necessary to receive even a weak received signal. It must be, but rarely turns off in normal use. Therefore, the switch (12) is mounted on the internal board (4) so that it can be operated only in the disassembled state where the upper cabinet (2) is not mounted, and it is prevented from being operated carelessly. ing.

However, since this cabinet has a waterproof structure, disassembling it in this way after assembling it once is not preferable from the viewpoint of maintaining airtightness, and in order to operate the switch (12) like this, the upper cabinet (2) is If it is removed and reassembled, the airtightness may be reduced.

For this reason, like the power switch (not shown) and other switches that are always operated, the operation knob that protrudes outside the cabinet in conjunction with the switch inside the cabinet is also attached to the switch (12) of this mute circuit and disassembled. Although it may be possible to operate it without using it, it is not easy to provide the operation knob on the outside of the waterproof cabinet in conjunction with the inside. In other words, it is necessary to apply complicated waterproof treatment to the operating knob by O-ring, packing, etc.
It is not preferable to open such an operating knob from the viewpoint of maintaining airtight precision and preventing an increase in manufacturing cost.
As described above, it is not preferable to provide the operation knob on the outside of the cabinet also from the viewpoint of preventing careless operation.

In view of the above points, the present invention provides a waterproof electric device that can operate a variable electric element such as a switch without providing an operation knob or the like, and that even if the variable electric element is operated, airtightness does not deteriorate. The purpose is to provide.

[Means for solving problems]

In the waterproof electronic device of the present invention, for example, as shown in FIG. 1, a cabinet is provided with a hole (2b) for airtightness check, a variable electric element (12) such as a switch and a volume is provided inside the cabinet, and this variable Electric element adjustment operation part (12
A) is arranged at a position facing the hole (2b), and an elastic lid (11) capable of closing the hole is provided.

[Action]

According to the present invention, a variable electric element (12) such as a switch or volume is located at a position corresponding to the airtightness check hole (2b).
Therefore, the variable electric element (12) can be operated from the outside through the hole (2b), and the variable electric element (12) can be operated without providing operation knobs or the like on the outside of the cabinets (1) and (2). In addition to being operable, it is not necessary to disassemble the cabinets (1) and (2) at the time of operation, so there is no risk that the airtightness will deteriorate even if this variable electric element (12) is operated.

〔Example〕

An embodiment of the waterproof electronic device of the present invention will be described below with reference to FIGS. 1 and 2. In FIGS. 1 and 2, parts corresponding to those in FIG. 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

The waterproof electronic device of this example is configured as a waterproof radio receiver as in the conventional example, and is configured as shown in FIG. That is, a small hole (2b) for airtightness check is provided in a cabinet (2) located right above a slider (12a) of a slide switch (12) for turning on / off a mute circuit mounted on the surface of a printed circuit board (4). ) Is provided. This small hole (2
b) has a diameter of, for example, about 2 to 3 mm, and an elastic lid such as rubber, for example, a plug (11) is fixed to the small hole (2b) through a filler such as a silicone sealant or an adhesive. Others are the same as those of the receiver shown in FIG. 6 as a conventional example.

Since the receiver of this example is configured as described above, it is possible to check the airtightness after assembling the cabinet by using the small hole (2b) as in the conventional case. The slide switch (12) can be easily operated even after the cabinet is assembled. That is, when operating the slide switch (12) of the receiver assembled as shown in FIG. 1, the plug (11) of the small hole (2b) is removed as shown in FIG. ) Insert a small tool such as a screwdriver (13) into the cabinet from
Use a tool such as 3) to move the slider (12a), which is the adjustment operation part of the slide switch (12), and then press this switch (12).
Switch. Then, after operating the switch (12), the stopper (11) is fixed again to the small hole (2b).

Thus, according to this example, the slide switch (12) arranged inside can be operated only by removing the plug (11) of the small hole (2b), and the upper cabinet (2) and the lower cabinet (1) can be operated as in the conventional case. ) And, there is no need to disassemble operation knobs and the like that require a complicated waterproof mechanism on the outside. For this reason, there is no risk that the airtightness will deteriorate due to the disassembly of the cabinet. Just by keeping the airtightness of the small hole (2b) with a diameter of about 2 to 3 mm by the plug (11), the airtightness will be maintained even after the switch operation. Can maintain sex.

Instead of attaching the stopper (11) to the small hole (2b), for example, as shown in FIG. 3, a lid (14) made of plate-shaped rubber or the like is used.
May be adhered to the stepped portion (2c) provided around the small hole (2b). In this case, a push switch (16) is arranged as a switch as shown in FIG. 4, and a relatively thin lid (15) having flexibility is adhered to the stepped portion (2c), so that the lid as shown in FIG. Even if the (15) is not removed, it can be operated by pushing the button (16a) of the push switch (16) with the driver (13) or the like from the top of the lid (15). In the case of FIG. 4, since there are no parts to be removed, the operation can be performed very easily.

In the above embodiment, the case of the switch (12) of the mute circuit is described, but the present invention can be applied to the case of other switches as long as it is a switch that is rarely operated, and of course, the variable electric element is used. It can be easily understood that parts other than switches such as semi-solid volume may be used if they are present. Furthermore, although the radio receiver has been described in the above embodiments, the present invention can of course be applied to other waterproof electronic devices such as a CB radio receiver and a cassette tape recorder. Furthermore, the present invention is not limited to the above-described embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[Effect of device]

According to the waterproof electronic device of the present invention, the variable electric element (12) can be operated without providing it on the outside of the cabinets (1) and (2) such as operation knobs, and the cabinets (1) and (2) can be disassembled during operation. Since it is not necessary to operate the variable electric element (12), there is an advantage that airtightness is not deteriorated even if the variable electric element (12) is operated.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the waterproof electronic device of the present invention, FIG. 2 is a sectional view showing an essential part of the example of FIG. 1, and FIGS. 3 to 5 are other embodiments of the present invention. FIG. 6 is a sectional view showing an essential part of an example, and FIG. 6 is a sectional view showing an example of a conventional waterproof electronic device. (1) is the lower cabinet, (2) is the upper cabinet,
(2b) is a small hole, and (12) is a slide switch.

Claims (1)

[Scope of utility model registration request] 1. A cabinet is provided with a hole for checking airtightness, a variable electric element such as a switch and a volume is provided inside the cabinet, and an adjusting operation part of the variable electric element is located at a position corresponding to the hole. A waterproof electronic device provided with an elastic lid that can close the hole.