JPH07273522A - Antenna mount device - Google Patents

Abstract

PURPOSE:To surely attain water-proof even for an antenna having an internal structure and to prevent the intrusion of static electricity and to improve the reliability in the mechanical strength as well. CONSTITUTION:An antenna 16 having an internal structure is clamped by a clamping member 4 of a front case 2 being a 1st case structure member and other clamping member 10, and the clamping member 10 and the antenna 16 are fixed to a boss 6 of the front case 2 by a screw 24. A packing 26 is fitted to an antenna cover 17 and a torus rib 29 in the inside of a small diameter part 27 is in press contact with the outer periphery of the antenna cover 17 to seal the cover. The antenna cover 17 is inserted to a hole 31 of a rear case 3 being a 2nd case structure member. The case is sealed by combining the rear case 3 with the front case 2 to press the torus rib 30 of a large diameter part 28 of a packing 26 contact into the inner face of the rear case 3 at an outer peripheral edge of a hole 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna mounting device which is used in portable wireless equipment such as a cordless telephone handset and which is waterproof.

[0002]

2. Description of the Related Art Conventionally, as an antenna mounting device for a cordless telephone handset, a structure is known that is waterproof as shown in FIGS. 3 is an external view of a slave unit using the conventional antenna mounting apparatus, FIG. 4 is a sectional view showing the conventional antenna mounting apparatus, and FIG. 5 is a partially exploded perspective view showing the antenna mounting apparatus.

As shown in FIGS. 3 to 5, the case 51 of the slave unit comprises a rear case 52 and a front case 53, and the rear case 52 and the front case 53 are screwed and engaged (not shown). ) Etc. are fixed. Antenna 5
In No. 4, an annular groove 55 is formed on the base side, a core member 56 capable of providing good antenna characteristics is projected on the base end side, and a mounting hole 57 is formed at the end of the core member 56. A recess 58 is formed in the upper portion of the rear case 52, and a hole 59 is formed in the bottom of the recess 58. Annular groove 55 of antenna 54
An O-ring 60 made of an elastic material is fitted to the core member 56. In this state, the core member 56 is inserted from the recess 58 of the rear case 52 into the hole 59, and the upper portion of the core member 56 is inserted into the recess 58. The O-ring 60 is interposed between the inner surface of the annular groove 55 and the inner peripheral surface of the recess 58 in a compressed state, and the outer periphery of the antenna 54 and the inner periphery of the recess 58 of the rear case 52 are sealed.

The core member 56 of the antenna 54 is superposed on the tip of a boss 61 projecting in the rear case 52 via a washer 62, and a screw 63 is inserted through a mounting hole 57 of the core member 56 into the washer 62 to form a boss. The antenna 54 is fixed to the boss 61 of the rear case 52 by being screwed into the screw hole 64 of 61. A wire 65 connected to the washer 62 is electrically connected to the wireless unit inside the case 51.

As described above, in the conventional antenna mounting device for the cordless telephone handset, the rear case 52 is used.
The antenna 54 and the rear case 52 are fixed by inserting and fixing the antenna 54 with the O-ring 60 attached to the outside.
The area between can be waterproofed.

[0006]

However, in the above-described conventional antenna mounting device, when an antenna having an internal structure such as an exciter (lossless impedance converter) is used, the base side of the antenna is inserted from the outside of the case. However, there is a problem that a similar waterproof structure cannot be obtained.

The present invention solves such a conventional problem, and even an antenna having an internal structure can surely be waterproof and can prevent static electricity from entering from the outside. Therefore, it is possible to improve the reliability of waterproofing, and to eliminate the need for static electricity measures in the electric circuit near the antenna section.
The antenna can be protected by absorbing a mechanical shock from the outside, and further, the case can be prevented from disassembling even if a mechanical shock is applied to the entire portable wireless device,
Therefore, it is an object of the present invention to provide an antenna mounting device capable of improving reliability in mechanical strength.

[0008]

Means for Solving the Problems The technical means of the present invention for achieving the above object is to provide a fixing means for fixing an antenna having an internal structure to a first case constituent member and a second case constituent member. A hole formed to project the antenna, and a packing that seals the outer periphery of the antenna and seals the inner surface of the second case constituent member at the peripheral portion of the hole are provided.

As a fixing means in the above technical means, a pair of large-diameter portions formed on the base of the antenna,
A first sandwiching member projecting inside the first case component member and engaged between the large diameter portions, and a first sandwiching member engaged between the large diameter portions and cooperating with the first sandwiching member. The second holding member for holding the antenna, the boss protruding inside the first case component, the base end of the antenna, and the base end of the second holding member. Screwing means for screwing to the boss.

Further, the packing in the above technical means is fitted to the antenna and fitted to the small diameter portion which is inserted into the hole of the second case constituent member and the antenna, and the packing of the second case constituent member and the antenna is fitted. A large-diameter portion interposed between the large-diameter portion and an annular protrusion that is pressed against the outer circumference of the antenna on the inner circumference of the small-diameter portion;
It can be configured to have an annular ridge that is pressed against the inner surface of the second case component at the peripheral edge of the hole in the case component.

[0011]

According to the present invention constructed as described above, the antenna is fixed to the first case component member, and the outer circumference of the antenna is projected from the hole of the second component member by the packing,
Since the inner surface of the peripheral edge of the hole in the second case constituent member is sealed, even an antenna having an internal structure can be reliably waterproofed to prevent water from entering the case from the outside. It is possible to prevent static electricity from entering the case from the outside. Further, since the packing is interposed between the antenna and the second case constituent member, it is possible to protect the antenna by absorbing a mechanical shock from the outside. Further, since the antenna is fixed to the first case constituent member and the antenna is inserted through the hole of the second case constituent member, even if a mechanical shock is applied to the entire portable wireless device, the first and second It is possible to prevent the case constituent members from being disassembled.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show an antenna mounting device according to an embodiment of the present invention. FIG. 1 is a sectional view and FIG. 2 is an exploded perspective view.

As shown in FIGS. 1 and 2, the case 1 of the slave unit includes a front case 2 which is a first case constituent member and a rear case 3 which is a second case constituent member in this embodiment. The front case 2 and the rear case 3 are combined and fixed by engagement means (not shown) or the like.

A holding member 4 is integrally provided inside the front case 2 substantially parallel to the upper surface, and a recess 5 is formed at the tip of the holding member 4. Bosses 6 and 7 are integrally provided inside the holding member 4 inside the front case 2, and screw holes 8 and 9 are formed inside the bosses 6 and 7, respectively. Clamping member 1 provided independently of front case 2 and rear case 3
In No. 0, the folded-back portion 12 is integrally provided on the front side of the base portion 11, the screw mounting holes 13 and 14 are formed in the base portion 11 so as to correspond to the screw holes 8 and 9 of the bosses 6 and 7, and the tip portion of the folded-back portion 12 is formed. A recessed portion 15 is formed in the.

The antenna 16 includes an antenna cover 17, an exciter (a printed circuit board for providing antenna characteristics) 18 arranged at the base end of the antenna cover 17, and a core member arranged behind the exciter 18. 19 and a coaxial wire 20 connected to the exciter 18, each of which is fixed and integrated by means such as caulking and has an antenna function. The base of the antenna cover 17 has a pair of large diameter parts 2
1, 22 are integrally provided, and a screw mounting hole 23 is formed at the tip of the core material 19.

The large diameter portions 21, 22 of the antenna 16 are
Between the concave portion 5 side of the holding member 4 of the front cover 2 and the holding member 1
0 is engaged by the side of the recessed portion 15 and both sides of the recessed portions 5, 15 of the sandwiching members 4, 10 are in contact with each other, and the large diameter portions 21, 22 of the antenna 16 are sandwiched by the sandwiching members 4, 10. Has been done. In this state, the tip end of the core member 19 of the antenna 16 and one side of the base 11 of the holding member 10 are sequentially stacked on the boss 6, and the screw 24 is screwed into the screw hole 8 of the boss 6 from the screw mounting holes 13 and 23. The other side of the base portion 11 of the holding member 10 is superposed on the boss 7, screws 25 are screwed into the screw holes 9 of the boss 7 from the screw mounting holes 14, and the antenna 16 is fixed to the front cover 2.

The packing 26 is made of an elastic material such as rubber,
A small-diameter portion 27 and a large-diameter portion 28 that are fitted to the antenna cover 17 of the antenna 16 are integrally provided. An annular ridge 29 is integrally provided inside the small diameter portion 27 at a position slightly ahead of the middle portion, and an annular ridge 30 is integrally formed on the outer peripheral portion of the large diameter portion 28 on the protruding side of the small diameter portion 27. It is provided in. The packing 26 is fitted to the antenna cover 17 of the antenna 16. At this time, the annular ridge 2
Since the inner diameter of 9 is set to be smaller than the outer diameter of the antenna cover 17, the annular ridge 29 is deformed into a compressed state and pressed against the outer circumference of the antenna cover 17, so that the gap between the antenna cover 17 and the packing 26 is reduced. Is sealed.

A hole 31 is formed in the upper plate of the rear case 3, and the hole 31 is loosely fitted in the small diameter portion 27 of the packing 26 with the antenna cover 17 of the antenna 16 inserted into the hole 31. The rear case 3 is combined with the front case 2 by utilizing this loose state, and the case 1 is configured in a fixed state. At this time, the outer surface of the large-diameter portion 21 of the antenna 16 on the projecting side of the antenna cover 17 and the inner surface of the upper plate of the rear cover 3 are parallel to each other, and the distance A includes the annular protrusion 30 of the packing 26. It is set to be shorter than the thickness of the portion 28. Therefore,
The annular ridge 30 is deformed into a compressed state, and is pressed against the inner surface of the upper plate of the rear case 3 at the outer peripheral edge of the hole 31 so that the rear case 3
The seal 26 and the packing 26 are sealed. Antenna 1
The coaxial line 20 of 6 is connected to a wireless unit (not shown) inside the case 1.

According to the above-mentioned embodiment, the packing 26 keeps the close contact with the antenna cover 17 by the annular projection 29 and the close contact with the inner surface of the upper plate of the rear case 3 by the annular projection 30. By keeping this, water can be prevented from entering between the packing 26 and the antenna 16 and from the packing 26 and the hole 31 of the rear case 3, and even in the case of the antenna 16 having an internal structure such as the exciter 18, the antenna part Can be waterproofed. In addition, by obtaining the above-mentioned close contact state, it is possible to prevent static electricity from entering between the packing 26 and the antenna cover 17 and between the packing 26 and the hole 31 of the rear case 3, thereby preventing static electricity in the electric circuit near the antenna section. Can be eliminated.

Further, since the elastic packing 26 is interposed between the antenna 16 and the rear case 3 which holds the antenna 16, a shock that does not directly transmit a mechanical shock from the outside to the base of the antenna 16. It can have an absorption structure.

Further, the antenna 16 is attached to the front case 2 with screws 2.
4 and then fix the antenna 16 to the hole 3 in the rear case 3.
Since it is inserted into 1 and fixed, even if a mechanical shock is applied to the entire slave unit, the front case 2 and the rear case 3 do not come off due to the shock.

[0023]

As described above, according to the present invention, the antenna is fixed to the first case constituent member, and the outer circumference of the antenna protruded from the hole of the second constituent member by the packing and the second case. Since the inner surface of the peripheral edge of the hole in the component member is sealed, even an antenna with an internal structure can be reliably waterproofed to prevent water from entering the case from the outside, and moreover, the inside of the case from the outside. It is possible to prevent static electricity from invading. Therefore, it is possible to improve the reliability of waterproofing and eliminate the need to take measures against static electricity in the electric circuit near the antenna section. Further, since the packing is interposed between the antenna and the second case constituent member, it is possible to protect the antenna by absorbing a mechanical shock from the outside. Further, since the antenna is fixed to the first case constituent member and the antenna is inserted through the hole of the second case constituent member, even if a mechanical shock is applied to the entire portable wireless device, the first and second It is possible to prevent the case constituent members from being disassembled. Therefore, the reliability in mechanical strength can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an antenna mounting device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the antenna mounting device.

FIG. 3 is an external view of a cordless telephone handset using a conventional antenna mounting device.

FIG. 4 is a cross-sectional view showing the antenna mounting device.

FIG. 5 is a partially exploded perspective view showing the antenna mounting device.

[Explanation of symbols]

 1 case 2 front case 3 rear case 4 clamping member 10 clamping member 16 antenna 18 exciter 21 large diameter portion 22 large diameter portion 26 packing 27 small diameter portion 28 large diameter portion 29 annular projection 30 annular projection 31 hole

Claims (3)

[Claims] 1. A fixing means for fixing an antenna having an internal structure to a first case constituent member, a hole formed in the second case constituent member for projecting the antenna, and sealing the outer periphery of the antenna. An antenna mounting device, comprising: a packing that seals an inner surface of the second case constituent member at a peripheral portion of the hole. 2. A fixing means is provided on a pair of large diameter portions formed on a base portion of the antenna and a first projecting member on the inside of the first case constituting member so as to be engaged between the large diameter portions. A clamping member,
A second sandwiching member that is engaged between the large diameter portions and sandwiches the antenna in cooperation with the first sandwiching member; and a boss that projects inside the first case component member. The antenna mounting device according to claim 1, further comprising: a screwing means for screwing the base end of the antenna and the base end of the second holding member to the boss. 3. The packing is fitted to the antenna, and the second
And a large diameter portion that is fitted into the antenna and that is interposed between the second case constituent member and the large diameter portion of the antenna. An annular protrusion is provided on the inner circumference to be pressed against the outer circumference of the antenna, and is pressed against the inner surface of the second case constituent member at the peripheral portion of the hole of the second case constituent member on the outer circumference of the large diameter portion. The antenna mounting device according to claim 1 or 2, further comprising an annular protrusion.