JPH0145138Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an antenna mounting device suitable for mounting an antenna on a housing of a television receiver or the like.

FIG. 1 shows a typical conventional example of this type of antenna mounting device. That is, this antenna mounting device includes a male member 1 provided on the antenna side and a female member 3 mounted on the housing 2 side of a television receiver or the like. The male member 1 includes an elastically deformable locking piece 5 divided into two parts by a slot 4 cut in the axial direction from the lower end.
5, and arrowhead-shaped locking protrusions 6, 6 are provided at the lower ends of the locking pieces 5, 5, respectively. In addition, this male member 1
For example, two rotatable antenna elements 7, 7
It can be attached to an indoor antenna, etc. that has a on the other hand,
The female member 3 includes a cylindrical main body 8 formed to be attached to the housing 2 with, for example, screws. The inner diameter of this cylindrical body 8 at its upper opening end is substantially smaller than the outer diameter of the locking protrusions 6, 6, but the lower end thereof has an inner diameter that cooperates with the locking protrusions 6, 6. A locking recess 9 is formed which acts as a retainer. Therefore, while elastically deforming the locking pieces 6, 6, the male member 1 is inserted into the female member 3.
The locking protrusion 6 and the locking recess 9
By engaging these, the antenna can be rotatably and securely attached to the housing 2.

By the way, according to the UL standard, which is a safety standard in the United States, conductive objects such as metal rods must not be accidentally inserted into the housing of electrical equipment such as television receivers. Therefore, the female member 3 as described above must not be a through hole, and is provided with a bottom cover 10 to close it. However, since the locking recess 9 must be provided in the cylindrical body 8 of the female member 3, it is extremely difficult to integrally mold the cylindrical body 8 having the bottom cover 10 from synthetic resin. Conventionally, the cylindrical main body 8 and the bottom cover 10 are formed separately, and the bottom cover 10 is attached later using an adhesive or the like. Needless to say, this method increases the number of parts and has poor workability. On the other hand, FIG. 2 shows a structure in which the female member 3 with the bottom cover 10 can be integrally molded with the housing 2 as a conventional example that solves the above-mentioned drawbacks. According to this, since almost half of the locking recess 9 serves as a mold extraction passage perpendicular to the axis of the cylindrical body 8, the bottom cover 10 is inserted from the side wall of the housing 2 to the lower opening of the cylindrical body 8. can be extended so as to almost occlude the area. However, as shown in FIG. 3, this includes a first mold 11 that forms the inner wall surface of the casing 2, a nest 12 that forms the locking recess 9, and a mold that forms the inner wall surface of the casing 2. A complex mold includes a second mold (not shown) that forms an outer wall surface, and a slide core 13 that abuts the tip of the nest 12 at right angles to form an internal passage of the cylindrical body 8. In addition, in order to prevent the insert 12 from being pushed by the slide core 13 and deformed, a slight gap 14 is provided between the underline of the locking recess 9 and the bottom cover 10, and the tip of the insert 12 is Bottom side first
Since the metal mold 11 must be used to hold it, an increase in costs is inevitable. Furthermore, since burrs are generated at the joining portion between the slide core 13 and the insert 12 due to deformation of the insert 12 during molding, there is a problem that requires time and effort for subsequent processing.

Therefore, the purpose of this invention is to enable integral molding with the housing using a simple mold, and to
An object of the present invention is to provide an antenna mounting device equipped with a female member with a bottom cover that also complies with UL standards.

Hereinafter, this invention will be explained in detail with reference to an embodiment shown in FIGS. 4 and 5. Note that the male member of the antenna mounting device according to this invention is the same as the male member 1 described in connection with FIG. 1, so a description thereof will be omitted, and only the female member will be described here.

In this invention, the female member 20 is formed of a cylindrical body with a bottom integrally formed with the housing 2. in this case,
The inner diameter of the female member 20 is substantially smaller than the outer diameter of the locking protrusions 6, 6 provided on each locking piece 5, 5 of the male member 1;
A thin wall portion 21 is provided at the lower end of the peripheral wall corresponding to the insertion position of the locking protrusions 6, 6 when the insertion is completed, and can be deformed to bulge outward by the elastic restoring force of the locking pieces 5, 5. There is. Note that this female member 20
may be made of, for example, ABS resin, which is normally used as a molding material for the housing 2, and the peripheral wall on the top opening side is formed to have a thickness of about 2.5 to 3 mm, whereas the thin wall portion 21 The thickness is approximately 1mm. However, it goes without saying that this thickness is appropriately selected depending on the synthetic resin used, the elastic restoring force of the locking piece 5, and the like.

FIG. 5 illustrates a state in which the male member 1 is inserted into the female member 20. That is, while elastically deforming the locking pieces 5, 5 in the diametrical direction, the male member 1 is
When the is forcibly inserted into the female member 20, the thin part 21
bulges outward as shown in the figure due to the elastic restoring force of the locking pieces 5, 5, thereby forming a locking recess for the locking protrusions 6, 6. Therefore, the male member 1 is firmly attached so that it will not come off under normal tension. Also. The thin part 21 is the locking protrusion 6, 6
Because of the friction that occurs between the joint surfaces, even if rotational stress due to twisting of the feeder wire (not shown) is applied to the antenna, the orientation of the antenna can be adjusted to the desired rotational position for each broadcast station. can be held.

As is clear from the description of the embodiments described above, according to this invention, the female member 20 is a cylindrical body with a simple bottom and does not have an undercut portion unlike the conventional one, so that a mold with a simple structure can be used. This allows it to be integrally molded with the housing 2, which has great practical value. Also, since it is a cylindrical body with a bottom,
Needless to say, it complies with UL standards.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a typical conventional antenna mounting device, Fig. 2 is an explanatory diagram of a conventional example different from Fig. 1, and Fig. 3 is a molded metal of the female member shown in Fig. 2. FIG. 4 is a cross-sectional view showing an embodiment of this invention, and FIG. 5 is an explanatory view of its operation. In the figure, 1 is a male member, 2 is a housing, 4 is a slot,
5 is a locking piece, 6 is a locking protrusion, 20 is a female member, 21
is the thin part.

Claims (1)

[Claims for Utility Model Registration] It has a male member provided on the antenna side and a female member provided on the housing side of a television receiver, etc., and the male member has a slot cut in the axial direction from the lower end. Consists of a rod-shaped body that is divided into a plurality of parts by splitting and has an elastically deformable locking piece with an arrowhead-shaped locking protrusion formed at the lower end, and each of the locking pieces is deformed in the direction of diameter reduction. In the antenna mounting device for attaching the antenna to the housing by inserting the antenna into the female member while moving the female member, the female member is a bottomed cylindrical body made of synthetic resin and integrally formed with the housing, An antenna mounting device characterized in that the lower end is provided with a thin part that can be deformed outward by the elastic restoring force of the locking piece to form a locking recess that cooperates with the locking protrusion. .