JPH0629212U - Antenna mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] A GPS antenna can be attached to the trunk lid with good stability via a U-shaped bracket for a vehicle with a large curvature of the trunk lid. [Structure] A recess (fixing seat) 4 for fixing a U-shaped metal fitting 2 is provided on a back surface 1a of a mounting base incorporating a GPS antenna, and a U-shaped metal fitting lower than the depth of the recess 4 is placed behind the recess 4. The raised portion 8 for hanging is formed, and the fixed position of the U-shaped metal fitting 2 can be adjusted to move back and forth. For a trunk lid having a large bending rate, the U-shaped metal fitting 2 is slid rearward and the rear portion thereof is provided. Is mounted on the heap portion 8 and fixed rearward and downward with respect to the rear surface of the mounting base.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an antenna mounting structure for fixing an antenna to a vehicle trunk lid through a U-shaped metal fitting fixed to the back surface of the antenna mounting base.

[0002]

[Prior art]

 To attach the antenna to the vehicle, it is safe to make a mounting hole in the car body and attach the base to it and screw the base tightly, but this is not preferable because it will damage the car body. Conventionally, as a mounting structure of an antenna for fixing an antenna to a vehicle using a U-shaped metal fitting fixed to the back surface of the mounting base, for example, as described in Japanese Utility Model Publication No. 1-21405, a U-shaped metal fitting is used. It is known that a protrusion is formed on the inner surface of the upper plate, and the protrusion and a fastening screw are used to stably and firmly fix the protrusion to the trunk lid of the vehicle.

[0003]

[Problems to be solved by the device]

 Vehicle trunk lids can be seen to be nearly flat or extremely curved depending on the vehicle model. Conventionally, since the U-shaped metal fitting 2 is fixed to the back surface 1a of the mounting base in a horizontal direction, if the curvature rate of the trunk lid 10 is large, as shown in FIG. The side opposite to the fixed part floats along the surface of 10 and the mounting stability deteriorates. Therefore, there was a drawback that it was easily affected by the vibrations that occurred during running. Also, when external force is applied to the floating part, there is a drawback that part of the lid of the trunk is bent or damaged.

[0004]

[Means for Solving the Problems]

 This invention makes it possible to attach the antenna to the trunk lid with good stability even if the trunk lid has a large bending ratio. The structure is such that it is located at the rear position of the fastening seat for fastening the U-shaped bracket. On the back of the mounting base by moving the fastening position of the U-shaped metal fitting back and forth by forming a raised part for mounting the U-shaped metal fitting. Is adjustable backwards.

[0005]

[Action]

 If you mount the rear part of the U-shaped bracket on the raised part and fix it to the back of the mounting base, the opposite side of the fixed part will approach the upper surface of the trunk lid, so the bending rate of the trunk lid will be large. However, the back of the mounting base will be in the mounting position along the surface of the trunk lid.

[0006]

【Example】

 An example of mounting the antenna mounting structure according to the present invention in a GPS antenna will be described with reference to the drawings. Reference numeral 1 is an antenna mounting base, and 2 is a U-shaped metal fitting. The mounting base 1 incorporates a GSP patch antenna (circularly polarized patch antenna), a microstrip antenna, etc. (not shown), and a coaxial cable 3 connected to a feeding point of the antenna is led out. . Further, at the rear end of the mounting base bottom surface 1a, a horizontally long rectangular concave portion 4 which is a seat for the U-shaped metal fitting 2 is provided, and the concave portion 4 has a semicircular bulging portion 4a in the center of the front side. And a recess 54 having the same shape as the recess 4 is formed in the front portion so that the semi-circular bulging portions 5a face each other. Screw holes 6.6 and 7.7 are provided at the bottoms of the recesses 4 and the bulges 4a and 5a. A raised step portion 8 is formed.

On the antenna fastening side of the U-shaped metal fitting 2, a fastening plate 9 matching the recess 4 is formed in the center, and both sides of the fastening plate 9 are brought into contact with the surface of the trunk lid 10 to be attached. The sandwiching plate 11 is protruded inward by one step in parallel with the fastening plate 9, and the fastening plate 9 is provided with two parallel cut grooves 12. Further, the holding plate 13 on the side opposite to the antenna fixing side is provided with screw holes 14 and 14, and fastening screws 15 and 15 are screwed into the screw holes 14 and 14, respectively.

According to the mounting structure thus formed, the fastening plate 9 of the U-shaped metal fitting 2 is fitted into the concave portion 3, and the fastening screws 16 and 16 inserted into the cut grooves 12 and 12 are screw holes. The U-shaped metal fitting 2 can be attached in parallel with the back surface 1a of the base by screwing it into the 7-, and the end edge of the trunk lid 10 can be inserted into the U-shape and tighten the tightening screws 15, 15. When tightened, the rear end of 1 is fixed to the trunk lid 10, and the anti-slip rubbers 17 · 17 ··· that are adhered to the four places on the rear surface 1a of the mounting base are pressed against the surface of the trunk lid 10. It can be attached to the trunk lid 10 with good stability (Fig. 2).

When the radius of curvature of the trunk lid 10 is small and the side opposite to the fastening side is lifted up, the fastening screws 16 and 16 are temporarily loosened and the notch 12 is used to stop the U-shaped metal fitting 2. If the rear end of the mounting plate 9 is slid to the raised step portion 8 and the fastening screws 16 are re-tightened to adjust the U-shaped metal fitting 2 so as to be lowered downward, the mounting angle of the mounting base 1 is reduced. It has been modified to accommodate trunk lid 10 with a small radius of curvature (Fig. 3). In this case, since the raised step portion 8 is lower than the depth of the recessed portion 4, the wall surface 4b of the recessed portion 4 functions as a stopper behind the raised step portion 8 and there is no possibility that the U-shaped metal fitting 2 will come off or be displaced. .

In the embodiment, since the height of the raised step portion 8 is lower than the depth of the concave portion 4, the wall surface 4b of the concave portion 4 functions as a stopper at the rear side as described above, and the U-shaped metal fitting may be displaced rearward and fall off. Although it is prevented, when the raised step portion 8 is made higher than the depth of the concave portion 4, it is desirable to form a wall as a stopper behind the raised step portion 8. Further, although the raised step portion 8 of the embodiment is one step, the number of steps is increased by forming the raised step portion 8 into two steps as shown in FIG. 4, or the raised portion is formed into a curved inclined surface as shown in FIG. It can also be formed and adjusted steplessly.

By the way, in the case of a vehicle such as a bus that does not have a trunk lid, it cannot be mounted using a U-shaped metal fitting, but in the structure of this embodiment, it is symmetrical to the fastening seat in front of the rear surface of the mounting base. Since the concave portion 5 with the bulging portion 5a is provided, as shown in FIG. 6, the attachment 18 incorporating the permanent magnets 18a and 18a is fitted so as to straddle the concave portions 4 and 5, and the screw hole 6 is used. It is also possible to fix it with screws 19 and attach it to the roof surface by the magnetic force of the permanent magnet. In this embodiment, the GPS antenna in which the antenna is built in the mounting base has been described, but the mounting structure of the present invention can also be used in, for example, a whip antenna in which the antenna is not built in the mounting base. Provide a connector for mounting the antenna on the mounting base, attach the whip antenna to the connector, and connect the coaxial cable.

[0012]

[Effect of device]

 According to the present invention, since the posture of the U-shaped metal fitting fastened to the back surface of the mounting base can be adjusted by using the raised portion, the U-shaped metal fitting can be used for vehicles with different curved trunk lid shapes. The antenna can be attached easily and with good stability by adjusting the angle.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a mounting portion of an antenna according to the present invention.

FIG. 2 is an explanatory diagram of an antenna mounting state.

FIG. 3 is an explanatory diagram of an antenna mounting state.

FIG. 4 is an explanatory diagram of a modification example.

FIG. 5 is an explanatory diagram of a modification example.

FIG. 6 is an explanatory view showing an attachment for mounting on a roof surface.

FIG. 7 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 ... Mounting base, 1a ... Mounting base bottom,
2 ・ ・ U-shaped metal fittings, 3 ・ ・ Coaxial cable, 4 ・ ・ Recessed part (stop seat), 4a ・ ・ Bulged part, 4b ・ ・ Wall surface of recessed part 3,
5 ・ ・ Concave part, 5a ・ ・ Swelling part, 6.7 ・ ・ Screw hole, 8 ・
・ Raised step, 9 ・ ・ Fixing plate, 10 ・ ・ Trunk lid, 11 ・ ・ Holding plate, 12 ・ ・ Incision groove, 13 ・ ・ Holding plate, 14 ・ ・ Screw hole, 15 ・ ・
Tightening screw, 16 ... Fixing screw, 17 ... Anti-slip rubber, 18 ... Attachment, 18a ... Permanent magnet, 1
9 ... screw.

Claims (1)

[Scope of utility model registration request] 1. An antenna mounting structure for fixing an antenna to a trunk lid of a vehicle through a U-shaped metal fitting fixed to the rear surface of an antenna mounting base, the fixing seat for fixing the U-shaped metal fitting. An antenna mounting structure in which a raised portion for mounting the U-shaped metal fittings is formed at the rear position of, and the fastening position of the U-shaped metal fittings can be adjusted to move back and forth.