JPH0635525Y2 - Telescopic antenna for vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a telescopic antenna for a vehicle mounted on a vehicle such as an automobile, and more particularly to an improvement of a mounting mechanism for mounting the telescopic antenna to a vehicle body or the like.

[Conventional technology]

When the telescopic antenna is attached to the vehicle body, the vicinity of the antenna insertion / extraction opening of the antenna housing cylinder is fitted and inserted into the antenna attachment hole formed in the vehicle body, and is fixed to the vehicle body by the upper and lower antenna attachment elements. In this case, as the lower antenna mounting element that comes into contact with the inner surface side of the vehicle body, a so-called ground base usually formed of a metal member such as an aluminum alloy is necessary because it is necessary to electrically connect the ground end of the antenna to the vehicle body. It is used.

Since the ground base is a hard one and is mechanically and closely inserted between the antenna housing cylinder and the vehicle body, it causes unpleasant noise when resonance occurs due to vibrations of the motor or vibrations of the vehicle while traveling. There was a risk of causing.

As a measure against such noise generation, what is called a soft mount has been used in which the material of the main body of the ground base is changed to an elastic member such as rubber and grounding means is added to the elastic member.

[Problems to be solved by the device]

By using the soft mount, the noise is significantly reduced. However, since the material of the main body of the ground base causes elastic deformation, it is difficult to fix the positions of the antenna housing cylinder and the ground base in the circumferential direction, and when a strong external force is applied, the ground base rotates. There was a risk of doing it. Therefore, there is a problem that the ground base and the vehicle body are not properly joined to each other, and the antenna cannot be stably attached in a predetermined state.

Therefore, the object of the present invention is to use a soft mount as the lower antenna mounting element, but it is possible to position this lower antenna mounting element in a stable and reliable manner with respect to the antenna housing cylinder, and the antenna is good with respect to the vehicle body. (EN) Provided is a telescopic antenna for a vehicle, which is equipped with a mounting means that can be mounted on a vehicle.

[Means for Solving the Problems]

The present invention has taken the following means in order to solve the above problems and achieve the object. That is, a ground washer that is electrically connected to the grounded end of the antenna housing cylinder is attached to one end surface of the cylindrical soft mount portion formed of an elastic member, and an earth washer that is electrically connected to the vehicle body is attached to the other end surface of the soft mount portion. In a telescopic antenna for a vehicle in which the antenna is mounted by using a lower mounting element formed by short-circuiting both washers, a slit detent piece provided upright on the ground washer is provided in the soft mount portion. The groove is formed on the peripheral surface, and the slit is fitted to a projection protruding on the outer circumference of the storage cylinder for attachment.

[Action]

By taking the above measures, resonance generated in the antenna can be suppressed and unpleasant noise can be prevented, and of course, the lower antenna mounting element composed of the soft mount can be positioned stably, and the antenna is good with respect to the vehicle body. Can be attached to.

〔Example〕

1 to 5 show an embodiment in which the present invention is applied to a telescopic antenna for an electric vehicle.

FIG. 1 is a schematic diagram showing the overall configuration of this embodiment. 1
Is a drive motor for rotating the drum mechanism 2. A rope (not shown) formed of hard synthetic resin or the like is wound around the drum mechanism 2, and the tip of the rope is connected to the minimum diameter rod of the antenna 3. The antenna 3 is housed in a housing cylinder 4 so that it can be inserted and removed freely. Thus, when the rotation control of the motor 1 is performed by the controller 5, the drum mechanism 2 is actuated to transfer the rope, and accordingly, the antenna 3 is inserted / removed in / from the storage cylinder 4 to expand / contract. .

By the way, a lower antenna mounting element 6 made of a soft mount is fitted in the vicinity of the insertion / removal opening of the antenna housing cylinder 4. The lower antenna mounting element 6 will be described in detail later, but its upper end surface is a tapered surface that fits the inner surface of the vehicle body. Reference numeral 7 denotes an upper mounting element, which is fitted into the upper end portion of the antenna housing cylinder 4 protruding outward of the vehicle body and is brought into contact with the outer surface of the vehicle body. Reference numeral 8 denotes a fixing nut, which is screwed into a threaded portion at the upper end portion of the antenna housing cylinder 3, and the tightening force thereof causes the upper mounting element 7 to be pressed against the vehicle body and to give a force to pull the housing cylinder 4 upward. Thus, the storage cylinder 4 is fixed to the vehicle body by the upper and lower attachment elements 6 and 7. Incidentally, reference numeral 9 in FIG. 1 denotes an antenna feeder line.

FIG. 2 is a side sectional view showing the structure of the lower antenna attachment element 6, and FIG. 3 is a front view of the element 6. In FIGS. 2 and 3, reference numeral 10 denotes a soft mount portion made of an elastic member such as rubber, which has a substantially cylindrical shape. A pair of cut grooves 11 and 12 are provided on the lower end surface of the soft mount portion 10, and the ground washer 15 is integrally attached to the cut groove 11 and 12 with the pair of projecting pieces 13 and 14 being inserted. There is. The upper end surface of the soft mount portion 10 is a tapered surface whose angle matches the inclination of the inner surface of the vehicle body as shown in the figure. An earth washer 17 having a projecting portion 16 on one side for contacting with the inner surface of the vehicle body in a state of being bited is fixedly mounted on the tapered surface. The terminal 15a of the ground washer 15 and the terminal 17a of the ground washer 17 are short-circuited by the lead wire 18 as shown in FIG.

FIGS. 4 (a) to 4 (c) are views showing the relationship and shape of the ground washer 15 and the ground washer 17, FIG. 4 (a) is a plan view of the ground washer 17, and FIG.
Is a plan view of the ground washer 15, and FIG. 7B is a diagram showing a state in which both washers are connected. The ground washer 17 has a shape as shown in FIG. 11A when viewed from above, and as shown in FIG.
Has 19. The engagement piece 19 is fitted in a groove formed on the upper end of the soft mount portion 10 to fix the ground washer 17 on the soft mount portion 10. Further, when the ground washer 15 is viewed from below, the ground washer 15 has a shape as shown in FIG. The detent piece 20 has a detent function with respect to the antenna housing cylinder 4, and is for specifying the position in the same direction.

FIG. 5 is an exploded perspective view showing the relative relationship between the housing cylinder 4 and the soft mount portion 10 and the ground washer 15 in the lower antenna mounting element 6. In this figure, the ground washer 15 is removed from the soft mount portion 10 and attached to the storage cylinder 4 alone. The rotation stopper provided on the ground washer 15 with respect to the protrusion 41 provided on the storage cylinder 4.
The slit portion 21 of 20 is adapted to be engaged. Thus, the ground washer 15 is positioned with respect to the storage cylinder 4, and at the same time, the rotation preventing function is exerted. Further, the protrusions 13 and 14 are fitted into the grooves 11 and 12 provided in the soft mount portion 10,
The detent piece 20 and the protrusion 41 are engaged with the groove 50. Thus, the soft mount portion 10, the ground washer 15, and the storage cylinder 4 are positioned, and at the same time, the rotation preventing function is exerted.

The function of preventing the storage cylinder 4 and the ground washer 15 from rotating can be generated, for example, between the inner peripheral portion of the ground washer 15 and the outer peripheral portion of the storage cylinder 4, but is configured as in this embodiment. This has the following effects.
The protrusion 41 used as the rotation stopper protrusion for the metallic ground base can be used as it is to exert the rotation stopper function between the storage cylinder 4 and the ground washer 15. as a result,
What is conventionally used as the storage cylinder 4 is
It can be used as it is, and there is no need to redesign part of it. Since the anti-rotation piece 20 and the protrusion 41 are engaged with the groove 50 of the soft mount portion 10, the antenna housing tube 4, the ground washer 15, the soft mount portion
It is possible to easily and surely perform positioning between the three members 10 and 10. Moreover, the anti-rotation piece 20 is inserted into the groove of the soft mount portion 10.
Since it is engaged with 40, a large engaging force due to external force
Even when acting on 40, the groove 40 can be prevented from being deformed, and the soft mount portion 10 can be stably prevented from rotating.
As a result, while using a soft mount,
The lower antenna mounting element can be stably and surely mounted on the antenna housing cylinder.

The present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[Effect of device]

According to the present invention, the anti-rotation piece with the slit provided upright on the ground washer is engaged with the groove formed on the inner peripheral surface of the soft mount portion, and the slit is fitted on the protrusion protruding on the outer periphery of the storage cylinder. Since I tried to attach them together,
It is possible to provide a vehicular telescopic antenna including a mounting means capable of stably and reliably positioning the lower antenna mounting element with respect to the antenna housing cylinder, and capable of mounting the antenna well to the vehicle body.

[Brief description of drawings]

1 to 5 are views showing an embodiment of the present invention, and FIG. 1 is a side view showing a schematic configuration of an antenna of this embodiment,
2 and 3 are a side sectional view and a front view of the lower antenna mounting element. 4A to 4C are views showing the ground washer and the ground washer, FIG. 4A is a plan view of the ground washer, FIG. 4B is a side view of the ground washer and the ground washer connected by lead wires, (C)
[Fig. 4] is a plan view of a ground washer. FIG. 5 is an exploded perspective view showing the relationship among the storage cylinder, the ground washer, and the soft mount portion. 1 ... motor, 2 ... drum mechanism, 3 ... antenna, 4
…… Storing cylinder, 41 …… Projection, 5 …… Controller, 6…
… Lower antenna mounting element, 7 …… Upper antenna mounting element, 8 …… Fixing nut, 9 …… Antenna feeder, 10 ……
Soft mount, 11,12 …… groove, 13,14 …… projection piece, 15…
… Grand washer, 17 …… Ground washer, 19 …… Protrusion, 20 …… Rotating stopper.

Claims (1)

[Scope of utility model registration request] 1. A ground washer which is electrically connected to a ground end of an antenna housing cylinder is attached to one end surface of a cylindrical soft mount portion formed of an elastic member, and another end surface of the soft mount portion is electrically connected to a vehicle body. In a telescopic antenna for a vehicle in which an earth washer is attached and an antenna is attached by using a lower attachment element formed by short-circuiting both washers, in the above-mentioned soft washer A telescopic antenna for a vehicle, characterized in that the telescopic antenna is mounted by engaging with a groove formed on an inner peripheral surface of the portion, and by fitting the slit into a protrusion protruding on an outer periphery of the housing cylinder.