JPH0729945U - Antenna mounting structure for drip-proof cordless telephone - Google Patents

Abstract

(57) [Abstract] [Purpose] An object is to obtain an antenna mounting structure for a drip-proof cordless telephone which is easy to mount and can be easily liquid-sealed. [Structure] An antenna mounting structure of a drip-proof cordless telephone in which a base portion 3a of a rod antenna 3 is inserted into an antenna hole 2 on an outer surface of a telephone case 1 to perform liquid sealing between a mounting portion of the rod antenna 3 and an inner surface 1a of the telephone case 3, a threaded hole 5 is formed on the surface of the base tongue piece 3b for stopping the rotation of the rod antenna 3, and a mounting hole 7 extending in a direction perpendicular to the antenna hole 2 and capable of reaching the threaded hole 5 is provided in the telephone. Internal connection terminal formed on the inner surface 1a of the case 1, formed with a counterbore 8 around which a seal ring such as an O-ring 9 is located, and an escape hole 12 corresponding to the seal ring. The threaded portion 6 of the mounting screw 6 with a collar with 10 interposed
Antenna mounting structure for a drip-proof cordless telephone in which a is tightened in the screw hole 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a case housing structure, and more particularly, to a mounting structure for a wireless communication rod antenna.

[0002]

[Prior art]

 As is well known, in a drip-proof cordless telephone used in a bathroom or the like, it is necessary to maintain a liquid-tight state between a stick antenna partially exposed to the outside of the telephone case and the inside of the telephone case. However, conventionally, the structure shown in FIG. 5 is used to seal the inside and outside of the telephone case.

That is, reference numeral “A” in FIG. 5 is a telephone case, and the outer surface a of the telephone case A is ₁ At the base b of the rod antenna B₁ An antenna hole C into which the insert can be inserted is formed, and the base b of the rod antenna B is₁ Mounting screw protruding from b₂ Is introduced into the inside of the telephone case A through a through hole D connected to the bottom surface of the antenna hole C. A liquid-sealing 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 b₂ The bag nut G is screwed into the terminal with the internal connection terminal F interposed. In addition, reference numeral “H” in FIG. 5 is a rotation stopping cutting surface formed on the peripheral surface of the base portion of the rod antenna B.

Therefore, according to such an antenna mounting structure, when the bag nut G is fastened 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]

[Problems to be solved by the device]

 However, this liquid-tight state is performed by controlling the tightening torque of the cap nut G that controls the deformation state of the O-ring E, but the cap nut G must be tightened within the narrow space inside the telephone case A. Not only is the work difficult to perform, but the tightening torque cannot be strictly controlled, so the tightening torque is weak, causing liquid droplets to enter the case A of the phone, causing malfunction, or conversely increasing the tightening torque. If not, it causes the phone case A to crack.

In view of the problems of the conventional antenna mounting structure as described above, an object of the present invention is to provide an antenna mounting structure of a drip-proof cordless telephone which is easy to mount and can easily obtain a liquid sealed state. is there.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, the present invention is directed to a drip-proof cordless telephone that inserts the base of a rod antenna into the antenna hole on the outer surface of the telephone case and seals the liquid between the attachment portion of the rod antenna and the inner surface of the telephone case. In the antenna mounting structure, a screw hole is formed on the surface of the base tongue for stopping the rotation of the rod antenna, and a mounting hole extending in a direction perpendicular to the antenna hole and reaching the screw hole is provided on the telephone case. It is formed on the inner surface, and a counterbore is formed around the same mounting hole where a seal ring such as an O-ring is located, and a collar is provided with an internal connection terminal that has an escape hole corresponding to the seal ring. An antenna mounting structure for a drip-proof cordless telephone in which a screw portion of a mounting screw is tightened in the screw hole.

[0008]

【Example】

 1 to 4, the details of the embodiment of the present invention will be described below. 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 rear portion of a telephone case 1 of the drip-proof cordless telephone, and the antenna hole 2 has a rod antenna. The base part 3a of 3 is inserted. That is, as shown in FIG. 2, an extension hole 4 for receiving the base tongue piece 3b integrally connected to the base end surface of the rod antenna 3 is connected to the bottom surface of the antenna hole 2 and also serves as a rotation stopper for the rod antenna 3. A substantially horizontal screw hole 5 is formed in the slanted base tongue piece 3b.

On the inner surface 1a of the telephone case 1, a substantially horizontal mounting hole 7 into which the screw portion 6a of the collar mounting screw 6 can be inserted is formed 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 that keeps the liquid-tightness should 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 following. To be elected.

An internal connection terminal 10 connected to an 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 attached. Electrical connection between the internal connection 11 and the rod antenna 3 is achieved via the mounting screw 6. Since the escape hole 12 having a diameter slightly larger than the outer diameter of the O-ring 9 is formed in the central portion of the internal connection terminal 10 fitted into the threaded portion 6a of the flanged mounting screw 6, the O-ring 9 is formed. The surface of the smooth collar 6b of the mounting screw 6 with the collar and the bottom surface of the spot facing 8 can be simultaneously contacted.

As can be seen from FIG. 3, in order to obtain the positional relationship of the internal connection terminals 10 between the inner surface 1 a of the telephone case 1 and the mounting screw 6 with the flange, two positionings are made on the inner surface 1 a of the telephone case 1. The pins 13 are projected, and the positioning holes 14 are formed in the surface of the internal connection terminals 10 corresponding to the positioning pins 13. Therefore, when the positioning hole 14 of the internal connection terminal 10 is fitted into the positioning pin 13, the center of the clearance hole 12 of the internal connection terminal 10 is aligned with the center of the mounting hole 7 and the spot facing 8, so that the flange The work of mounting the rod antenna 3 with the mounting screw 6 becomes easy.

Since the antenna mounting structure of the drip-proof cordless telephone according to the illustrated embodiment has the structure as described above, after the base portion 3a of the rod antenna 3 is inserted into the antenna hole 2 of the telephone case 1, a collar is attached. By screwing the screw portion 6a of the mounting screw 6 into the screw hole 5 of the base tongue piece 3b, a liquid-tight state inside and outside the telephone case 1 can be obtained. That is, as shown in FIG. 4, the O-ring 9 and the internal connection terminal 10 are fitted into the threaded portion 6a of the flanged mounting screw 6, the tip of the threaded portion 6a is passed through the mounting hole 7, and the screw of the base tongue piece 3b is screwed. When the collar mounting screw 6 is tightened in the hole 5, the surface of the O-ring 9 extends over the entire circumference with respect to the surface of the collar 6b of the collar mounting screw 6 and the bottom surface of the counterbore 8, as shown in FIG. As a result, the liquid sealing inside and outside the telephone case 1 is completed. This fixing work can be easily performed with a screw driver or the like from a direction perpendicular to the longitudinal direction of the rod antenna 3, but the deformation of the O-ring 9 is caused by the depth of the counterbore 8 and the internal connection terminal 10. Since the thickness can be set in advance, the tightening torque for tightening the internal connection terminal 10 can be controlled very easily, and a proper liquid-tight state by the O-ring 9 can be easily realized.

Although the O-ring 9 is illustrated in the above embodiment, another seal ring may be used instead of the O-ring 9.

[0014]

[Effect of device]

 As is clear from the above description, according to the present invention, since it is possible to mount the rod antenna by simply tightening the mounting screw with a collar from a wide space at a right angle to the length direction, the mounting work is easy. become. In the present invention, the deformation ring of the seal ring such as the O-ring can be set in advance by the depth of the counterbore and the thickness of the internal connection terminal. There is an effect that the state is obtained.

[Brief description of drawings]

FIG. 1 is a side view of a drip-proof cordless telephone according to the present invention, shown partially broken 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 a pickup removed.

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

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

[Explanation of symbols]

 1 Telephone case 1a Inner surface 2 Antenna hole 3 Bar antenna 3a Base part 3b Base part Tongue piece 4 Extension hole 5 Screw hole 6 Mounting screw with collar 6a Screw part 6b Collar 7 Mounting hole 8 Counterbore 9 O-ring 10 Internal connection terminal 12 Relief hole

Claims (1)

[Scope of utility model registration request] 1. An antenna mounting structure for a drip-proof cordless telephone in which a base portion of a rod antenna is inserted into an antenna hole on an outer surface of a telephone case to perform 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 rotation of the antenna, and a mounting hole extending in a direction perpendicular to the antenna hole and reaching the screw hole is formed on the inner surface of the telephone case. Form a spot facing around which a seal ring such as an O-ring is located, and insert the flange of the mounting screw with the internal connection terminal that has a relief hole corresponding to the seal ring. An antenna mounting structure for a drip-proof cordless telephone characterized by being tightened in a hole.