JP2002519879A - Device for fixing a rod-shaped antenna - Google Patents

Abstract

(57) [Summary] In order to prevent theft, a device for fixing the rod-shaped antenna (1) to the fixing surface (5) by screw connection has been proposed. In this case, the antenna leg (10) of the rod-shaped antenna (1) has a thread (15). A rotatable sliding clutch (20) is provided on the antenna leg (10). The sliding clutch (20) cooperates with the thread (15) such that the rotation of the thread (15) is effected by the rotational movement of the sliding clutch (20). The rotating body (30) of the antenna leg (10) elastically surrounds the slip clutch (20), whereby the antenna rod (35) of the rod-shaped antenna (1) is screwed through the thread (15). The sliding clutch (20) is entrained by the rotating body (30) during the rotating movement of the rotating body (30) for fixing to the fixed surface (5), and the antenna rod (35) fixed to the fixed surface (5) is screwed. The rotating body (30) slides on the slip clutch (20) during the rotating movement of the rotating body (30) for releasing the fixing via the mountain (15).

Description

DETAILED DESCRIPTION OF THE INVENTION

The invention relates to a device for fixing a rod-shaped antenna of the type described in the preamble of claim 1.

In a fixing device for an antenna, which is already known from the unpublished German Patent Application No. 197 23 272.9, the antenna leg has a screw bolt and the antenna leg has a fixing surface. Can be fixed by a lock nut.

In contrast, the device according to the invention having the features of claim 1 is provided with a rotatable sliding clutch on the antenna leg, which is driven by the rotational movement of the sliding clutch. In cooperation with the screw thread, the rotation of the screw thread takes place, the rotating body of the antenna leg elastically surrounds the slip clutch, whereby the antenna rod of the rod-shaped antenna is threaded through the screw thread. During the rotational movement of the rotating body for fixing to the fixed surface, the slip clutch is entrained by the rotating body, and the rotation of the rotating body for unlocking via the thread of the antenna rod fixed to the fixed surface. When exercising,
This has the advantage that the rotating body slides on the slip clutch. In this way, illegal removal of the antenna rod is prevented. This is because the fixing of the antenna rod cannot be easily released by the rotational movement of the rotating body, and an additional clamping tool must be used.

[0004] The device according to claim 2 provides an advantageous further development and refinement of the device according to claim 1.

[0005] It is particularly advantageous if the rotary body in the region of the slip clutch has an elastic material which contacts the slip clutch. In this way, the sliding clutch can be elastically surrounded by the rotating body in a particularly simple manner without additional material costs. As a result, no additional components, such as, for example, mechanical spring elements, are necessary for guiding the sliding clutch by means of the rotating body when fixing the antenna rod to the fixing surface. Therefore, costs can be reduced.

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, a rod-shaped antenna provided with an antenna rod 35 is indicated by reference numeral 1. The antenna rod 35 is arranged concentrically with respect to the screw thread 15,
Is connected to the screw thread 15 via a screw. The screw thread 15 is in this case provided on a screw bolt 45 which can be screwed into a screw opening 50 in the fixing surface 5. Thereby, the antenna rod 35 of the rod-shaped antenna 1 can be firmly screwed to the fixed surface 5. The fixing surface 5 can in this case, for example, be a part of the vehicle body. However, the fixing surface 5 may be located at another optional mounting point for the rod-shaped antenna. The thread 15 is a part of the antenna leg 10 of the rod-shaped antenna 1.
The antenna leg 10 has a rotatable sliding clutch 20. The sliding clutch 20 cooperates with the thread 15 such that its rotation causes rotation of the thread 15. For this purpose, for example, as shown in FIG. 1, a sliding clutch 20 is provided on the antenna leg 10 concentrically with respect to the thread 15 and is rigidly connected to the thread 15 via a rotary shaft 25. ing. The antenna leg 10 further has a rotating body 30, which is a portion of the rod-shaped antenna 1 facing the fixed surface 5,
It surrounds the antenna rod 35 concentrically with respect to the rotation axis 25. In this case, the slip clutch 20 is elastically surrounded by the rotating body 30.

[0008] Firm fastening of the rod-shaped antenna 1 on the fixed surface 5 is realized as follows.

The rotating body 30 is rotated in a rotation direction necessary for screwing the antenna rod 35 to the fixed surface 5. In this case, the sliding clutch 20 is entrained by the rotating body 30 by elastically surrounding the sliding clutch 20 by the rotating body 30, and the sliding clutch 20 is screwed with the screw bolt 45 having the screw thread 15 by the antenna rod 3.
5 is rotated in the direction necessary for firmly screwing it to the fixing surface 5. The screw bolt 45 is thus firmly screwed into the screw opening 50. When the rod-shaped antenna 1 is firmly screwed to the fixing surface 5, one rotation for loosening the screw bolt 45 from the screw opening 50 and thus releasing the fixing of the antenna rod 35 fixed to the fixing surface 5. The rotation of the rotating body 30 in the direction causes the rotating body 30 to slide on the slip clutch 20. In this case, the sliding clutch 20 is not carried by the rotating body 30, so that the screw bolt 45 is not rotated and disengaged from the screw opening 50, and the rod-shaped antenna 1 is still firmly screwed to the fixed surface 5. That is, when the rod-shaped antenna 1 is released from the fixed surface 5, the antenna rod 35 that is firmly connected to the screw thread 15 via the rotary shaft 25 at the portion of the antenna rod 35 that is not surrounded by the rotating body 30. This is possible by a corresponding rotational movement. However, since the diameter of the antenna rod 35 is significantly smaller than the diameter of the rotating body 30 particularly in the area of the slip clutch 20, a large force must be applied to release the rod-shaped antenna 1 from the fixing surface 5. Such a process of releasing the rod-shaped antenna 1 from the fixed surface 5 can be further achieved if the antenna rod 35 has a metal surface and is not as easy to grasp as the plastic surface of the rotating body 30, for example. It becomes difficult.

FIG. 2 is a cross-sectional view of the slip clutch 20 according to the first embodiment, which is perpendicular to the rotation shaft 25. Here, a state in which the sliding clutch 20 is elastically surrounded by the rotating body 30 is shown. This is achieved by the fact that the rotor 30 has an elastic material in the region of the slip clutch 20 in contact with the slip clutch 20. The sliding clutch 20 has an annular tooth row 55 which curves against the direction of rotation indicated by the arrows in FIG. 2 for firmly screwing the antenna rod 35 to the fixing surface 5. Have been. The elastic material of the rotating body 30 is in contact with the tip of the tooth row 55. When the rotating body 30 is moved in a rotational direction for firmly screwing the antenna rod 35 to the fixed surface 5, the teeth 55 are engaged with the elastic material of the rotating body 30, and the slip clutch 20 is moved. It is entrained with the rotating body 30 in the rotation direction. On the other hand, when the rotating body 30 is moved in the opposite rotation direction for releasing the fixing of the antenna rod 35 firmly screwed to the fixing surface 5, the tooth row 55 becomes the rotating body 3.
It does not engage zero elastic material. On the contrary, the elastic material of the rotating body 30 slides on the teeth 55. This is because the teeth 55 are accurately curved in the rotation direction for releasing the fixing of the antenna rod 35 from the fixing surface 5. By using a clamping tool, for example, pliers, the rotating body 30 can be pressed against the sliding clutch 20 in the area of the sliding clutch 20, so that the rotating body for unlocking the antenna rod 35 fixed to the fixing surface 5 is released. Even at the time of 30 rotations,
The rotating body 30 entrains the slip clutch 20, and is thus rotated such that the screw bolt 45 is removed from the screw opening 50. Thus, theft prevention is performed.
This is because pliers are required to remove the rod-shaped antenna 1 from the fixed surface 5 without applying excessive force. On the other hand, this ensures that the antenna rod is unlocked from the fixing surface 5. This is advantageous, for example, if the antenna rod 35 has failed and must be replaced.

FIG. 3 shows a second embodiment of the fixing device according to the invention. In this case, the elastic surrounding of the sliding clutch 20 is provided by a mechanical spring member 40. In this case, the slip clutch 20 is formed as described for FIG. 2 and is likewise shown in cross section. The rotating body 30 is not made of an elastic material, at least in the region of the slip clutch 20, but is made of, for example, a hard plastic coating, so that the slip clutch 20 is not in contact. The mechanical spring members 40 each have a web 65, which is rotatably connected to the inner wall 70 of the rotating body 30 via a rotary joint 60. Each web 65 additionally has a spring 7
5 is connected to the inner wall 70. In this case, the springs 75 are arranged on the respective webs 65 on the surfaces oriented in the direction of rotation of the rotator 30 for firmly screwing the antenna rod 35 to the fixing surface 5. This direction of rotation is indicated by the arrow in FIG. The web 65 extends into the area of the tooth row 55. When the rotating body 30 is moved in a rotational direction for firmly screwing the antenna rod 35 to the fixing surface 5, the web 65 is engaged with the tooth row 55. In this case, the associated spring 75 is extended. Due to the spring force of the spring 75, the slip clutch 20 is driven and rotated together with the rotating body 30. As a result, the screw bolt 45 is screwed into the screw opening 50 and the fixing surface 5
Then, the antenna rod 35 is firmly screwed. Antenna rod 35 on fixed surface 5
When the rotating body 30 moves in the rotational direction for releasing the screw connection when the screw is firmly screwed, the web 65 is pushed in the direction of the inner wall 70 by the teeth 55 of the sliding clutch 20, whereby The rotating body 30 slides on the slip clutch 20 without the web 65 engaging with the tooth row 55.

According to FIGS. 2 and 3, each of the slip clutches 20 has eight teeth 55. This number can be increased or decreased as needed. According to FIG.
One tooth 55 is provided with one mechanical spring member 40. However, fewer mechanical spring members 40 may be provided to save material. However, in this case, when the antenna rod 35 is firmly screwed to the fixing surface 5, the load on each mechanical spring member 40 is increased.

FIG. 4 shows a third embodiment for a fixing device according to the invention. In this case, the elastic surrounding of the sliding clutch 20 is provided by a mechanical spring element as a mechanical sheet metal cage 80. The sliding clutch 20 is in this case formed as described in FIGS. 2 and 3 and is likewise shown in cross-section. As in the second embodiment, the rotary body 30 is not made of an elastic material at least in the region of the slip clutch 20 in the embodiment of FIG. There is no contact with the clutch 20. Inner wall 7 of rotating body 30
At 0, a mechanical leaf spring cage 80 is in contact and has a sliding clutch 20. The four webs 65 from the mechanical leaf spring cage 80 are
0 is protruding into the area of the tooth row 55. The web 65 is in this case integrally connected to the mechanical sheet metal spring cage 80 and likewise consists of sheet metal. The web 65 is elastically coupled to the leaf spring cage 80 and is bent toward the inner wall 70 in the rotational direction indicated by the arrow in FIG. 4 to firmly screw the antenna rod 35 to the fixing surface 5. I have. On the other hand, the tooth row 55 of the slip clutch 20 is curved in a direction opposite to the rotation direction. According to the description of the second embodiment, the rotating body 3
The web 65 engages the teeth 55 as the 0 is moved in the direction of rotation necessary to firmly screw the antenna rod 35 to the fixed surface 5. In this way, the slip clutch 20 and the rotating body are driven and rotated, whereby the screw pin 45 is moved to the screw opening 50.
And the antenna rod 35 is firmly screwed to the fixing surface 5. In a state where the antenna rod 35 is firmly screwed to the fixing surface 5, when the rotating body 30 is moved in the rotation direction for releasing the screw fastening, the web 65 is slipped.
From the teeth 55 of the rotating body 30 toward the inner wall 70, whereby the mechanical leaf spring cage 80 of the rotating body 30 slides on the sliding clutch 20 without the web 65 engaging with the teeth 55. The mode of operation of the web 65 of the third embodiment is therefore similar to the mechanical spring member 40 of the second embodiment. In this case, the rotary joint 60 and the spring 75 can be omitted in the third embodiment shown in FIG.

According to FIG. 4, four webs 65 under eight teeth 55 of the sliding clutch 20 are shown.
Is not shown, one web 65 is not provided for each tooth 55. However, more or less webs 65 may be provided.

If the rotating body 30 is moved in a rotational direction for unlocking the antenna rod 35 from the fixed surface 5, the rotating body 30 is rotatable with respect to the antenna rod 35 in this rotating direction, Is also good. This is because the rotating body 30 slides on the slip clutch 20 in this case.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a rod-shaped antenna provided with a device for fixing the rod-shaped antenna to a fixed surface.

FIG. 2 is a view showing a first embodiment of a fixing device according to the present invention.

FIG. 3 is a view showing a second embodiment of the fixing device according to the present invention;

FIG. 4 is a view showing a third embodiment of the fixing device according to the present invention.

[Procedural Amendment] Submission of translation of Article 34 Amendment of the Patent Cooperation Treaty

[Submission date] February 11, 2000 (2000.2.11)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

1. An antenna rod (35) on a fixing surface (5) by screw connection.
A device for fixing a rod-shaped antenna (1) having a shape in which the antenna leg (10) of the rod-shaped antenna (1) has a thread (15), A rotatable sliding clutch (20) is provided at (10),
The sliding clutch (20) cooperates with the thread (15) such that the rotation of the thread (15) is performed by the rotation of the sliding clutch (20), and the antenna leg (1) is rotated.
The rotating body (30) of (0) elastically surrounds the slip clutch (20), whereby the antenna rod (35) of the rod-shaped antenna (1) is fixed via the thread (15) to the fixing surface (5). The sliding clutch (20) is entrained by the rotating body (30) during the rotating movement of the rotating body (30) for fixing the antenna rod (35) fixed to the fixing surface (5) to the thread (15). Rotating body (30)
The device for fixing a rod-shaped antenna, characterized in that the rotating body (30) slides on the slip clutch (20) during the rotational movement of (1).

[Procedural Amendment] Submission of translation of Article 34 Amendment of the Patent Cooperation Treaty

[Submission date] July 14, 2000 (2000.7.14)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002] In a fixing device for an antenna already known from the unpublished German Patent Application No. 197 23 272.9, the antenna legs have screw bolts and the antenna legs have fixing surfaces. Can be fixed by a lock nut. In a short rod-shaped antenna for motor vehicles known from German Utility Model No. 29705308, an antenna rod is permanently connected to a lock via a screw connection with an adhesive. This lock has, for example, a cylinder insert for a key. The lock has a bayonet opening for the locking pin on the side opposite the antenna rod. The locking pin has at its end insertable into this insertion opening a notch formed as a circumferential groove for the engagement of a locking bolt.
The locking bolt is arranged in the region of the plug-in opening and engages in the locking condition in the peripheral groove. The locking pin has a thread section at the end facing the antenna base and can thus be screwed into a corresponding thread hole in the antenna base. Such a screw connection between the thread section and the thread hole can also be fixed by means of an adhesive. The antenna rod can only be released from the antenna base by releasing the lock between the lock and the locking pin using a key that matches the lock. U.S. Pat. No. 5,642,972 discloses a one-way screw coupling device. The screw connection device is manually operated, but requires a tool for release.
For this purpose a rotary knob is placed over the screw. A one-way ratchet is provided between the rotary knob and the screw. The ratchet allows the screw to be turned clockwise with a knob and tightened. When rotating counterclockwise, the ratchet prevents the screw from being released, so a tool is required to release the screw.

Claims (6)

[Claims] An apparatus for fixing a rod-shaped antenna (1) to a fixing surface (5) by screw connection, wherein the antenna leg (10) of the rod-shaped antenna (1) is provided.
Has a thread (15), a rotatable sliding clutch (20) is provided on the antenna leg (10),
The sliding clutch (20) cooperates with the thread (15) such that the rotation of the thread (15) is performed by the rotation of the sliding clutch (20), and the antenna leg (1) is rotated.
The rotating body (30) of (0) elastically surrounds the slip clutch (20), whereby the antenna rod (35) of the rod-shaped antenna (1) is fixed via the thread (15) to the fixing surface (5). The sliding clutch (20) is entrained by the rotating body (30) during the rotating movement of the rotating body (30) for fixing the antenna rod (35) fixed to the fixing surface (5) to the thread (15). Rotating body (30)
The device for fixing a rod-shaped antenna, characterized in that the rotating body (30) slides on the slip clutch (20) during the rotational movement of (1). 2. A sliding clutch (20) is provided on the antenna leg (10) concentrically with respect to the thread (15), and the sliding clutch (20) is mounted on a rotating shaft (25).
2. The device according to claim 1, wherein the device is rigidly connected to the thread via a thread. 3. The device according to claim 1, wherein the sliding clutch is elastically surrounded by a mechanical spring element. 4. The sliding body according to claim 1, wherein the rotating body has an elastic material in the region of the slip clutch in contact with the slip clutch. Equipment. 5. The rotating body (30) is rotated by a clamping tool, in particular by pliers, during a rotational movement of the rotating body (30) for unlocking the antenna rod (35) fixed to the fixing surface (5). 5. The device according to claim 4, wherein the device is pushable against the slip clutch, whereby the slip clutch is entrained by the rotating body. 6. The antenna rod (35) is arranged concentrically with respect to the thread (15), and the antenna rod (35) is connected to the thread (1) via a rotation axis (25).
6. The device according to claim 1, which is rigidly connected to 5).