JP2535701Y2 - Antenna mounting structure for drip-proof cordless telephone - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing structure, and more particularly, to a mounting structure of a rod antenna for wireless communication.

[0002]

2. Description of the Related Art As is well known, in a drip-proof cordless telephone used in a bathroom or the like, a liquid-tight state is provided between a stick antenna partially exposed outside the telephone case and the inside of the telephone case. Although it is necessary to hold the liquid, conventionally, the inside and outside of the telephone case are sealed by a structure as shown in FIG.

[0005] That is, reference numeral “A” in FIG. 5 denotes a telephone case, and an antenna hole C into which the base b ₁ of the rod antenna B can be inserted is formed on the outer surface a ₁ of the telephone case A,
Mounting screw b ₂ protruding from base b ₁ of rod antenna B
Is introduced into the telephone case A through the through hole D connected to the bottom surface of the antenna hole C. A liquid-sealing O-ring E is interposed between the base end surface of the rod antenna B and the bottom surface of the antenna hole C, and the mounting screw b
_A cap nut G is screwed into ₂ with the internal connection terminal F interposed therebetween. The symbol "H" in FIG.
Is a turning-stop ground surface formed on the peripheral surface of the base.

Therefore, according to such an antenna mounting structure, when the cap nut G is tightened to the mounting screw b ₂ , the O-ring E is elastically deformed between the base end surface of the rod antenna B and the bottom surface of the antenna hole C. Therefore, the O-ring E provides a liquid-tight state inside and outside the telephone case A.

[0005]

However, this liquid-tight state is achieved by controlling the tightening torque of the cap nut G which controls the deformation state of the O-ring E.
Since the cap nut G must be tightened in the narrow space inside the phone case A, not only is the work difficult, but also
Since the tightening torque cannot be strictly controlled, the tightening torque is weak, and liquid droplets enter the inside of the phone case A, causing a malfunction. On the contrary, the tightening torque is too strong, causing the phone case A to crack. ing.

SUMMARY OF THE INVENTION The object of the present invention is to make mounting work easy in view of the above-mentioned problems of the conventional antenna mounting structure.
An object of the present invention is to provide an antenna mounting structure for a drip-proof cordless telephone that can easily obtain a liquid-sealed state.

[0007]

In order to achieve this object, according to the present invention, a base of a rod antenna is inserted into an antenna hole on an outer surface of a telephone case, and a liquid between a mounting portion of the rod antenna and an inner surface of the telephone case is provided. In an antenna mounting structure for a drip-proof cordless telephone for sealing, a screw hole is formed in a surface of a base tongue for stopping rotation of the rod antenna, and is extended in a direction perpendicular to the antenna hole and reaches the screw hole. An internal connection terminal having a mounting hole formed therein on the inner surface of the telephone case, a counterbore in which a seal ring such as an O-ring is positioned around the mounting hole, and a relief hole corresponding to the seal ring is formed. It is an object of the present invention to provide an antenna mounting structure for a drip-proof cordless telephone in which a screw portion of a mounting screw with a collar is fastened to the screw hole while being interposed.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention; FIG. FIG. 1 shows a drip-proof cordless telephone to which the present invention is applied. An antenna hole 2 oriented substantially vertically is formed in the upper part of the back of a telephone case 1 of the drip-proof cordless telephone. Base 3 of 3
a is inserted. That is, as shown in FIG. 2, an extension hole 4 for receiving a base tongue piece 3b integrally connected to the base end face of the rod antenna 3 is connected to the bottom surface of the antenna hole 2,
A substantially horizontal screw hole 5 is formed in the base tongue piece 3b which also serves to stop the rod antenna 3.

A substantially horizontal mounting hole 7 into which the screw portion 6a of the mounting screw 6 with a collar can be inserted is bored in the inner surface 1a of the telephone case 1 at a portion corresponding to the screw hole 5. A counterbore 8 concentric with the mounting hole 7 is formed on the inner surface 1a, and an O-ring 9 is located in the counterbore 8. The cross-sectional diameter of the O-ring 9 for maintaining liquid tightness is selected to be slightly larger than the sum of the depth of the counterbore 8 and the thickness of the internal connection terminal 10, as will be apparent from the description below. It is.

An internal connection terminal 10 connected to the internal connection 11 is interposed between the spring 6b of the collar mounting screw 6 and the inner surface 1a of the telephone case 1, and the internal connection terminal 10 and the collar are provided. Electrical connection between the internal connection 11 and the rod antenna 3 is achieved via the mounting screw 6. At the center of the internal connection terminal 10 fitted into the screw portion 6a of the flanged mounting screw 6, a relief hole 12 having a diameter slightly larger than the outer diameter of the O-ring 9 is formed. The flanged mounting screw 6 can simultaneously contact the surface of the smooth flange 6b of the mounting screw 6 and the bottom surface of the counterbore 8.

As can be understood from FIG. 3, in order to obtain a positional relationship between the inner surface 1a of the telephone case 1 and the mounting screw 6 with the collar, the inner surface 1a of the telephone case 1 is obtained.
Are provided with two positioning pins 13, and positioning holes 14 are formed in the surface of the internal connection terminal 10 corresponding to the positioning pins 13. Therefore, positioning pin 1
When the positioning hole 14 of the internal connection terminal 10 is fitted to the hole 3, the center of the escape hole 12 of the internal connection terminal 10 coincides with the center of the mounting hole 7 and the counterbore 8. The mounting work of the rod antenna 3 becomes easy.

Since the antenna mounting structure of the drip-proof cordless telephone according to the illustrated embodiment has the structure described above, after the base 3a of the rod antenna 3 is inserted into the antenna hole 2 of the telephone case 1, the mounting with the collar is performed. By screwing the screw portion 6a of the screw 6 into the screw hole 5 of the base tongue piece 3b, a liquid-tight state inside and outside the telephone case 1 is obtained. That is, as shown in FIG. 4, the O-ring 9 is
When the internal connection terminal 10 is fitted, the tip of the screw portion 6a is passed through the mounting hole 7, and the flanged mounting screw 6 is tightened into the screw hole 5 of the base tongue piece 3b, as shown in FIG. The surface of the flange 6b of the mounting screw 6 with the surface and the counterbore 8
The liquid seal inside and outside the telephone case 1 is completed because the liquid crystal display is brought into close contact with the bottom surface of the telephone case over the entire circumference. This fixing work can be easily performed with a screw driver or the like from a direction perpendicular to the length direction of the rod antenna 3, but the deformed white of the O-ring 9 depends on the depth of the counterbore 8 and the internal connection terminal 10.
Can be set in advance by the thickness of the internal connection terminal 10, so that the tightening torque at the time of tightening the internal connection terminal 10 is very easily managed, and a proper liquid-tight state by the O-ring 9 can be easily realized.

In the above embodiment, the O-ring 9 is exemplified, but instead of the O-ring 9,
Other seal rings may be used.

[0014]

As is clear from the above description, according to the present invention, it is possible to mount the antenna only by tightening the mounting screw with the collar from a wide space perpendicular to the length direction of the rod antenna. Mounting work becomes easy. In the present invention, the deformation of the seal ring such as the O-ring can be set in advance according to the depth of the counterbore and the thickness of the internal connection terminal. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a side view of a drip-proof cordless telephone according to the present invention, partially cut away.

FIG. 2 is an enlarged sectional view of a main part of the drip-proof cordless telephone.

FIG. 3 is a left side view of FIG. 2 with the pick-up removed.

FIG. 4 is a view similar to FIG. 2 but before tightening of the mounting screw with collar.

FIG. 5 is a sectional view of a conventional antenna mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telephone case 1a Inner surface 2 Antenna hole 3 Rod antenna 3a Base 3b Base tongue piece 4 Extension hole 5 Screw hole 6 Collar mounting screw 6a Screw portion 6b Collar 7 Mounting hole 8 Counterbore 9 O-ring 10 Internal connection terminal 12 Escape hole

Claims (1)

(57) [Scope of request for utility model registration] An antenna mounting structure for a drip-proof cordless telephone that inserts a base of a rod antenna into an antenna hole on an outer surface of a telephone case and performs liquid sealing between a mounting portion of the rod antenna and an inner surface of the telephone case. A screw hole is formed on the surface of the base tongue for stopping the antenna, and a mounting hole extending in a direction perpendicular to the antenna hole and capable of reaching the screw hole is formed on the inner surface of the telephone case. A counterbore in which a seal ring such as an O-ring is located is formed around the periphery, and the internal thread of the mounting screw with a collar is inserted with the internal connection terminal formed with a relief hole corresponding to the seal ring. An antenna mounting structure for a drip-proof cordless telephone, which is fastened to a hole.