JPH0742207U - Car antenna device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a car antenna device mounted on the body of an automobile such as a passenger car or a minibus, and tilts the antenna deliberately even if the antenna receives wind pressure, vibration or shock. In addition, it is possible to reduce the number of components and facilitate the assembly and adjustment, and to save labor in mass production. According to the present invention, in a car antenna, a tapered receiving portion 20b having a straight portion 20c is formed on an upper portion of a connecting cylinder body 20, and a sliding step portion 22a is formed in the connecting cylinder body 20.
The sliding body 22 having the
2, an antenna support 21 is pivotally attached to the upper part of the hinge 2 by a hinge pin 23 so that the tapered support 20b and the sliding step 2
2a and the coil spring 24 between the antenna support 21 and
Is urged against the taper receiving portion 20b so as to come into contact therewith.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a car antenna device mounted on the body of an automobile such as a passenger car or a minibus.

[0002]

[Prior art]

 The conventional car antenna device is configured as shown in FIGS. 4 to 6 (Japanese Utility Model Publication No. 56-16810).

In FIGS. 4 to 6, a threaded portion 1 a is engraved on the lower portion of the connection fitting 1 of the car antenna so as to screw an antenna holder (not shown). The connecting member 2 is connected to the upper part by a connecting cylinder member 3. A matching coil 4 is attached to the axial center of the connecting member 2, and the matching coil 4 is connected to a terminal 5. Furthermore, a cover member 6 having a truncated conical shape is screwed on the upper portion of the connection member 2, and a connection cylinder 7 is press-fitted into the cover member 6 so as not to come out. Further, a taper receiving portion 7a is formed on the upper part of the connecting cylinder body 7, and the taper receiving portion 7a is fitted so that the taper portion 8a of the antenna supporting rod 8 is brought into contact therewith. An antenna (not shown) is inserted into the insertion hole 8b of the antenna support rod 8. A hinge member 9 is pivotally attached to the taper portion 8a of the antenna support rod 8 by a hinge pin 10 so that the hinge member 9 can rotate between the flange portion 9a of the hinge member 9 and the taper receiving portion 7a. The coil spring 11 is interposed so as to urge the antenna support rod 8 toward the taper receiving portion 7a so as to abut.

Therefore, in the car antenna device described above, for example, when the car antenna is laid down in a substantially horizontal direction so as not to damage the antenna when entering the garage, the antenna support rod 8 is slightly moved upward against the elastic force of the coil spring 11. The hinge pin 10 of the hinge member 9 is pulled out to the outside, and then the antenna support rod 8 is rotated about 90 ° around the hinge pin 10 so that the antenna does not fall down substantially horizontally and is not broken. (See Fig. 6).

[0005]

[Problems to be solved by the device]

 However, although the above-mentioned car antenna device has no problem theoretically, when the antenna is subjected to wind pressure, vibration, or shock while the vehicle is running, the antenna support rod 8 resists the elasticity of the coil spring 11. Then, there is a tendency to rise and tilt, or to fall over.

The present invention solves the above-mentioned problems of the conventional technology and prevents the antenna from inadvertently tilting or falling down even when the antenna is subjected to wind pressure, vibration, or shock while the vehicle is running. In addition, it is an object of the present invention to provide a car antenna device in which the number of constituent parts is reduced, assembly and adjustment are facilitated, and labor is saved in mass production.

[0007]

[Means for Solving the Problems]

 According to the present invention, in a car antenna, a taper receiving portion having a straight portion is formed on an upper portion of a connecting cylinder body, and a sliding body having a sliding step portion is slidably fitted in the connecting cylinder body. An antenna support is pivotally attached to the upper part of the moving body by a hinge pin so that the antenna support can be raised and lowered, and a coil spring is pressed between the taper receiving part and the sliding step part so as to urge the antenna supporting body to the taper receiving part. It is the one that has been inserted.

[0008]

[Action]

 According to the present invention, when the antenna is laid down substantially horizontally, the antenna support body is slightly pulled upward against the elastic force of the coil spring to pull out the hinge pin of the sliding body to the outside. Rotate the antenna support about 90 ° around the hinge pin to lay down the antenna almost horizontally, and lay down the antenna deliberately even if the antenna receives wind pressure, vibration or shock while the car is running. By doing so, the number of components is reduced, assembly and adjustment are facilitated, and labor is saved by mass production.

[0009]

【Example】

 Hereinafter, the present invention will be described with reference to the illustrated embodiments.

In FIGS. 1 to 3, reference numeral 20 denotes a connection cylinder in a car antenna, and a screw portion 20 a is screwed to an antenna holder (not shown) at a lower portion of the connection cylinder 1. A straight portion 20c is formed on an upper portion of the connecting cylinder body 20, and a taper receiving portion 20b is formed continuously on the straight portion 20c. Further, the straight portion 20c and the taper receiving portion 20b are fitted so that the taper portion 21a and the sliding portion 21b of the antenna support body 21 come into contact with each other. I am trying to insert it. Further, a sliding member 22 is pivotally attached to a tapered portion 21a of the antenna support 21 by a hinge pin 23 so that the sliding step portion 22a is connected to the lower portion of the sliding member 22. The inner periphery of the cylindrical body 20 is formed so as to be slidable by increasing frictional force. Furthermore, a coil spring 24 is interposed between the sliding step portion 22a and the taper receiving portion 20b so as to urge the antenna supporting body 21 to contact the taper receiving portion 20b. .

Therefore, when the antenna is laid down substantially horizontally, the antenna support 21 is slightly pulled upward against the elastic force of the coil spring 24, and the hinge pin 23 of the sliding body 22 is pulled outward, and thereafter, The antenna support 21 is rotated about 90 ° around the hinge pin 23 to lie the antenna substantially horizontally.

On the other hand, when the vehicle is running, the antenna receives wind pressure, vibration or shock, and the sliding body 22 tries to float upward against the elasticity of the coil spring 24. The elastic force and the frictional force of the sliding step portion 22a prevent the antenna from inadvertently tilting or falling down, and the number of components is reduced to facilitate assembly and adjustment, thereby achieving labor saving by mass production.

The straight portion 20c of the connecting tubular body 20 may be formed in the middle portion or the lower portion of the opening of the continuous tubular body 20, as shown in FIGS. 7 (A) and 7 (B).

[0014]

[Effect of device]

 As described above, according to the present invention, the tapered receiving portion having the straight portion is formed on the upper portion of the connecting cylinder body, and the sliding body having the sliding step portion is slidably fitted in the connecting cylinder body. An antenna support is pivotally attached to the upper part of the moving body by a hinge pin so that the antenna support can rise and fall, and a coil spring is pressed between the taper receiving part and the sliding step part so as to urge the antenna supporting body to the tapered receiving part. Since the antenna is installed in the vehicle, even if the antenna is subjected to wind pressure, vibration, or shock while the vehicle is running, not only will the antenna tilt unintentionally or will not fall over, but also the number of components will be reduced and assembly adjustment will be performed. It has an excellent effect that it can facilitate manufacturing and save labor in mass production.

[Brief description of drawings]

FIG. 1 is a sectional view showing a car antenna device of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of FIG.

FIG. 3 is a view for explaining the operation of the present invention.

FIG. 4 is a front view showing a half of a conventional car antenna device in cross section.

FIG. 5 is an exploded view of a main part of a conventional car antenna device.

FIG. 6 is a diagram for explaining the operation of a conventional car antenna device.

FIG. 7 is a view showing another embodiment of the present invention.

[Explanation of symbols]

 20 connection cylinder 20b taper receiving part 20c straight part 21 antenna support 22 sliding body 22a sliding step 23 hinge pin 24 coil spring

Claims (1)

[Scope of utility model registration request] 1. A sliding body having a taper receiving portion having a straight portion formed on an upper portion of a connecting cylinder body, a sliding step portion slidably fitted in the connecting cylinder body, and a sliding body of the sliding body. The antenna support is pivotally attached to the upper part by a hinge pin so that the antenna support is biased to and abuts the taper receiving part and the taper receiving part and the sliding step part. A car antenna device comprising a coil spring.