JPH0321049Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle antenna device in which the antenna body is inserted into the pillar of a vehicle such as an automobile, and the antenna body is fixed to the upper outer surface or roof of the billboard. It is something.

[Prior Art] Conventionally, there has been a vehicle antenna device as shown in FIG. 5 as described above. In this vehicle antenna device, a mounting base 1 of an antenna body, which has an antenna element whose expansion and contraction direction intersects with the vehicle body, is fixed by screwing a pin screw 4 into the vehicle body 3 through an earth plate and a rubber seat 2. ing. In this antenna device, the antenna is grounded by passing the pin screw 4 through the vehicle body 3 and bringing it into contact with the metal surface of the vehicle body 3, and by making the ground plate conductive to the vehicle body 3 via the screw 4.

However, in recent automobiles, the thickness of the car body is thin, so when screwing in the tatsupin screw, the threaded surface is lifted, causing the car body to deform, making it impossible to securely tighten the mounting base, and causing deformation of the car body. This created a gap between the rubber seat and the rubber seat, impairing its waterproof properties and allowing rainwater to enter the car body. Furthermore, since the deformation of the vehicle body is caused by waves not only on the screwing surface of the tatu pin screw, but also on the outer surface, it is not preferable to connect the mounting base to the vehicle body as shown in FIG.

Therefore, as shown in FIG. 6, there is one in which a mounting tube 5 is interposed between the vehicle body 3 and the pin screw 4. If the mounting tube 5 is made of synthetic resin, it is driven into the hole provided in the vehicle body 3 by using its elasticity, or if it is made of metal, it is inserted with many slots formed in it from below. Fitted and fixed.

However, the hole into which the mounting tube 5 is fitted and fixed is provided during press molding of the vehicle body, and a coating film is formed on the hole wall by subsequent painting, and the mounting tube 5 is fitted in this state. For this reason, even if the mounting parts are made of synthetic resin or metal, the conduction between the tassel pin screw 4 and the vehicle body 3 is interrupted and grounding cannot be achieved.

Furthermore, as shown in FIG.
It has been proposed to connect the grounding wire 8 from the power feeding section 7 to the vehicle body 3 instead of grounding the power feeding section 7 using the pin screw 4.

In FIGS. 6 and 7, the same reference numerals as in FIG. 5 indicate corresponding parts, and in FIG. 7, reference numeral 9a indicates the antenna top of the telescopic rod antenna element, and 10 indicates the feeder cable.

[Problem that the invention attempts to solve]

However, in the vehicle antenna shown in FIG. 7, the position where the ground wire is connected to the vehicle body is far from the antenna mounting portion, so there is a problem that the grounding function cannot be fully demonstrated. Also, Jikko Sho 58-968
As described in the publication, an antenna mounting method in which a ground plate is integrally provided with a protruding part that protrudes inward of the vehicle body and a locking part bent from the tip of this protrusion, and this locking part is provided on the vehicle body. Some antenna devices are fixed around the hole from the inside of the car body, but this antenna device is also used because the mounting hole is formed during press molding of the car body, and a coating film is formed on the hole wall by subsequent painting. , It is difficult to obtain continuity between the ground plate and the vehicle body, and it is almost impossible to ground the antenna body. After inserting the antenna body into the mounting hole, it is necessary to move the insertion direction in a direction perpendicular to the insertion direction, making the installation work difficult. The problem was that it was troublesome.

This invention solves the above-mentioned problems, allows the mounting base to be screwed onto the thin car body, and also ensures that the antenna mounting part is grounded to the car body through a simple installation process. It is an object of the present invention to provide a vehicle antenna device that can take the following characteristics.

[Means for solving problems]

The present invention provides a vehicle antenna device in which a mounting base of an antenna body, which is equipped with an antenna element whose expansion/contraction direction intersects with the vehicle body surface, is fixed to the vehicle body with screws via an earth plate and a rubber seat. A grounding plate having one end fixed to the body, a mounting base fixing the other end of the grounding plate, a rubber seat tightening the other end between the mounting base, and an antenna mounting hole provided in the vehicle body. An elastic clamping part is formed in the middle part of the ground plate so as to elastically support the peripheral part of the antenna mounting hole when the antenna body is inserted, and a metal and a feeder cable connected to the vicinity of the lower end of the elastic clamping part.

[Effect]

As explained above, with the present invention, all you have to do is insert a part of the antenna body into the antenna mounting hole from the outside and tighten the mounting base with a screw such as a tatsupin screw through the earth plate and rubber seat. The antenna body can be easily fixed to the car body with good flexibility, and since the screws mentioned above do not connect to the ground, an appropriate mounting tube can be used, and the antenna body can be easily fixed to the car body with a thin thickness. When inserted into the mounting hole, the nails peel off the paint film on the car body and bite into the metal part, ensuring electrical continuity between the ground plate and the car body. Furthermore, since the feeder cable is connected to the vehicle body near the antenna mounting section, the distance between the power feeding section and the ground section is shortened, which reduces capacitance and improves the receiving sensitivity of the antenna.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In FIG. 1, the same reference numerals as in FIGS. 5, 6, and 7 indicate corresponding parts, and in this embodiment,
Insert the lower end of the antenna main body from the outside into the antenna mounting hole 3a provided in the pillar part of the vehicle body 3, support the mounting base 1 on the outer surface of the vehicle body 3 via the earth plate 11 and rubber seat 2, which will be described later, and attach the mounting base to the vehicle body 3. 1 is fixed to the vehicle body 3 by tightening the tatu pin screw 4 to the mounting cylinder 5. Note that the above configuration is similar to the conventional one shown in FIG.

As shown in FIGS. 2 to 4, the ground plate 11 has one end of the mounting plate 11a interposed between the mounting base 1 and the rubber seat 2, and is fastened and fixed with a tatu pin screw 4 that fastens these to the vehicle body 3. ing. Further, the earth plate 11 is attached to the mounting plate 11a.
A protrusion 11f that protrudes vertically inward at an inclination of about 20° corresponding to the inclination angle with the vertical plane of the vehicle body 3.
A lower end portion of the antenna body 6 is fixed to a metal member of the power feeding portion 7 of the antenna body 6 with solder 12 . Projection 11
An elastic clamping part 11c is integrally provided on one side of b, and this clamping part 11c is formed in a substantially U-shape that opens diagonally downward and is narrow on the opening side, and has an outer bent part provided in the middle of the opposite side. A pair of pawls 11f that protrude toward the opening side and the opposing surface side from 11d and 11e are provided at the opposite end of the wide portion. In addition, in Figure 1,
Reference numeral 9 is a telescopic rod antenna element having an antenna top 9a.

In this embodiment, by inserting the antenna body 6 into the antenna mounting hole 3a of the vehicle body 3 from the outside, a ground plate 11 fixed to the antenna body 6 is installed.
The elastic clamping part 11c provided on the protruding part 11b is press-fitted into the lower peripheral part of the mounting hole 3a of the vehicle body 3, and the claw 11f of the elastic clamping part 11c scratches the paint film on the inner surface of the vehicle body 3 and peels it off from the metal surface. For this reason, the antenna element 9 passes through the ground plate 11 to the vehicle body 3.
is grounded to.

As described above, in this embodiment, when the antenna main body 6 is inserted into the mounting hole 3a of the vehicle body 3, the elastic clamping portion 11c of the ground plate 11 fits into the vehicle body 3 from the end face of the mounting hole 3a. In this case, since the insertion direction of the antenna body 6 and the direction in which the clamping portion 11c is fitted are the same, it is easy to attach the antenna body 6 to the vehicle body 3. The opposing sides of the clamping part 11c strongly press against the inner and outer surfaces of the vicinity of the mounting hole 3a of the vehicle body 3, so that the supporting force is stable and strong, and sharp claws 11f protrude from both sides of the inner side of the clamping part 11c. As described above, since the paint film on the inner surface of the vehicle body 3 is peeled off and the metal surface is bitten, reliable grounding can be achieved with good workability. and,
In this embodiment, the clamping part 11c is integrally provided with a conventional grounding plate, so that it is possible to obtain grounding when installing the antenna without adding any separate parts. There is no need to consider the insulation and conductivity of the mounting tube 5 fixed to the mounting tube 5. Furthermore, since the clamping part 11c is bent outward from the middle part, it is easy to fit into the end face of the mounting hole 3a of the vehicle body 3, and the clamping part 11c is bent outward from the middle part. The antenna main body 6 is positioned by the elastic holding of the vehicle body 3 by 11c, and the positional relationship with the pin screw 4 can be easily secured, thereby allowing the antenna to be attached to the vehicle body 3 with good workability. Furthermore, since the grounding can be done at a location close to the power feeding section 7, the grounding function can be fully demonstrated.

[Effect of idea]

As explained above, according to the present invention, an elastic clamping part is formed on the ground plate to elastically support the area around the mounting hole of the vehicle body when the antenna body is inserted into the antenna mounting hole of the vehicle body, and this clamping part By removing the paint from the car body and providing claws that bite into the metal surface, the mounting base can be screwed onto thin car bodies, and the simple installation process ensures that the antenna mounting part is grounded to the car body. The advantage is that it is possible to provide a vehicle antenna device that can perform the following functions.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view showing a vehicle antenna device according to an embodiment of the present invention, Fig. 2 is a side view of the ground plate, Fig. 3 is a plan view of the same part, and Fig. 4
The figure is an explanatory diagram of the same elastic clamping part, Figures 5 and 6 are cross-sectional views showing the attachment parts of different conventional vehicle antenna devices to the vehicle body, and Figure 7 is another conventional vehicle antenna device. FIG. 2 is a schematic side view showing the antenna device. 1...Mounting base, 2...Rubber seat, 3...Vehicle body, 3a...Antenna mounting hole, 4...Tatsu pin screw, 5...Mounting tube, 6...Antenna body, 7...
Power feeding section, 8... Earth wire, 9... Antenna element,
9a...Antenna top, 10...Feeder cable, 11...Earth plate, 11a...Mounting plate, 11b...Protrusion part, 11c...Elastic clamping part,
11d, 11e...Bending portion, 11f...Claw, 12
……solder.

Claims (1)

[Scope of utility model registration request] In a vehicle antenna device in which a mounting base of an antenna body including an antenna element whose expansion/contraction direction intersects with the vehicle body surface is fixed to the vehicle body with screws via a ground plate and a rubber seat, the power feeding part 7 of the antenna body 6 is A grounding plate 11 having one end fixed, a mounting base 1 fixing the other end of the grounding plate 11, a rubber seat 2 tightening the other end between the mounting base 1, and an antenna provided on the vehicle body. an elastic clamping part 11c formed in the middle part of the ground plate 11 so as to elastically support the peripheral part of the antenna mounting hole 3a when the antenna main body 6 is inserted into the mounting hole 3a;
An antenna device for a vehicle, characterized in that it is provided with a claw 11f that is provided on the vehicle body and bites into the metal part by peeling off the paint of the vehicle body, and a feeder cable 10 that is connected to the vicinity of the lower end of the elastic clamping portion 11c. .