Connection device on the antenna housing

Abstract

The present invention relates to a connection device on an antenna housing, the connection device comprising: a circular mounting platform (1) for receiving an antenna circuit board on the upper side, wherein the bottom side of the mounting platform (1) is provided with reinforcing ribs (2) extending radially relative to the center; a cover (3) for completely covering the mounting platform (1); and a bolt (4) arranged in the center of the mounting platform (1) for inserting into an antenna housing bracket (15), characterized in that the connection device is designed as a rotating / locking connection.

Description

Background Art

[0002] Antenna housings of this type are known. The cover is usually connected to the mounting platform by means of a non-detachable snap-on connection. If testing of the operating principle of the antenna circuit board with the antenna transmitter and / or the antenna circuit board encapsulated with the transmitter shows that readjustment is necessary due to the dielectric formed by the cover, the cover must be removed forcibly, wherein the cover is usually damaged.

[0003] Utility model DE 20 2016 107 520 U1 discloses an antenna housing made of a plastic material that can be welded using ultrasound and does not have a dipole, which is fastened to an antenna housing support by means of a screw provided with a hollow shaft that is inserted into a mounting platform in a rotationally fixed manner. Here too, the function must be performed using a welded cover that cannot be removed again without damaging the housing.

[0004] The rotationally fixed arrangement of the bolts in the mounting platform for fastening the antenna housing to the bracket requires both an additional manual anti-rotation fastening on the antenna housing and tightening of the fastening nut on the bolt. In particular, when fastening the antenna housing to a motor vehicle roof, auxiliary forces are usually required both inside and outside the motor vehicle. Summary of the invention

[0005] The object of the present invention is therefore to provide a connection device on an antenna housing which, on the one hand, produces a fixed connection between the cover and the mounting platform for a functional test, which can be released without damage if necessary and, after the functional test, is fixed in a non-detachable manner to provide protection against vandalism. The antenna housing should be fixed to the support by a single fitter regardless of the installation location and even when a damaged antenna housing is modified or replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] An embodiment of the connection device according to the invention is schematically shown in the drawings and will be described in detail below with reference to the drawings. It is shown:

[0007] Figure 1 shows a perspective view of the antenna housing from below,

[0008] Figure 2 Shows a perspective view from the upper side of the mounting platform,

[0009] Figure 3 A perspective view showing the connection to the antenna housing bracket,

[0010] Figure 4a cross-sectional view showing the antenna housing on the antenna housing support, and

[0011] Figure 5a -c shows the snap-fit ​​connection between the mounting platform and the cover. DETAILED DESCRIPTION

[0012] An important feature of the subject matter of the invention is the rotational / locking connection used both for the cover on the mounting platform and for inserting the antenna housing into the bracket. When replacing an old unit with a new antenna housing using the anti-twist fastening, it is only necessary to provide a further hole in the antenna housing bracket at a specified distance next to the hole for the guide pin to pass through.

[0013] exist Figure 1 1 shows a perspective view of the antenna housing from below, showing a mounting platform 1 with radially arranged reinforcing ribs 2 and a cover 3 for completely covering the mounting platform 1. A bolt 4 is arranged in the center of the mounting platform 1. The mounting platform 1 and the cover 3 can be twisted relative to each other after being plugged into each other. The cover 3 includes a circumferential groove at the lower edge for inserting Figure 4 The lip seal 18 is shown.

[0014] The bolt 4 is fixedly formed as a hollow pin protruding vertically on the bottom side of the mounting platform 1 and has two parallel flattened portions 5. The plane of symmetry of the flattened portions 5 points to the area on the bottom side of the mounting platform 1 without reinforcement ribs 2.

[0015] Figure 2 The illustrated view of the top side of the mounting platform 1 shows a support and fastening mount 6 for an antenna circuit board (not shown here). The mounting platform 1 is circular and has different sections on its outer edge, which have different radii.

[0016] The first section 7 has a larger radius, which is adapted to the lining in the cover 3. The second section 8 has a relatively small radius as a notch. A downwardly directed bent section 9 is formed on each of the second sections 8. The first sections 7 each have a locking element 10 at one end, which is formed as a spring-loaded tongue by a slot-shaped undercut. In front of the locking element 10, the first section 7 is provided with an inwardly directed section, so that the head of the locking element 10 is located on the same arc as the first section 7.

[0017] Figure 3A fork-shaped tool 11 is shown arranged below the mounting platform 1 for engaging around the flattened portion 5 on the bolt 4 (not shown here). The fork-shaped tool 11 is provided with a flat handle arm 12, on which a cylindrical pin 13 is arranged vertically protruding. A predetermined distance is provided between the axis of the cylindrical pin 13 and the axis of the bolt 4. The fork-shaped tool 11 is tensioned on the bolt 4 (not shown here) in the direction of the bottom side of the mounting platform 1 by means of a nut 14, wherein the cylindrical pin 13 can be snapped into a hole in the antenna housing bracket 15, thereby effectively preventing the antenna housing from rotating.

[0018] Figure 4 The sectional view shows the overall arrangement of the antenna housing on a metal plate 15 as a support, which can be, for example, a motor vehicle roof. A first O-ring 16 is provided on the underside of the mounting platform 1, surrounding the bolt 4, which seals the mounting platform 1 relative to the metal plate 15. A correspondingly smaller second O-ring 17 is arranged around the cylindrical pin 13, which seals the locking of the cylindrical pin 13 in the metal plate 15. The cover 3 is sealed relative to the metal plate 15 by a lip seal 18 known per se.

[0019] Figure 4 The antenna housing cross section shown cuts through the mounting platform 1 in the region of the second section 8 with the formed kinked section 9. The edge section 7 lies internally on the cover cap 3 on the circumferential support surface 19. Figure 1 , from which the guide strip 20 spaced apart from the support surface 19 can also be seen.

[0020] After the mounting platform 1 has been inserted into the section region between two guide strips 20 following one another, the mounting platform 1 and the cover 3 can be twisted relative to one another. First, the angled section 9 on the second section 8 is almost flush with the edge of the cover 3 on the guide strip 20. During the twisting, the edge section 7 is pushed under the guide strip 20 and the angled section 9 covers the cushioning region of the edge section 7 accordingly.

[0021] A stop plate 21 is provided between the guide strip 20 and the support surface 19 to limit the rotation, which stop plate can be, for example, Figure 5a In the rotational direction, before the stop plate 21 , the contact surface 19 is provided in the cover 3 with a rising ramp 22 which increases the wall thickness of the cover 3 and has a stepped edge 23 located before the stop plate 21 .

[0022] When the cover 3 is twisted relative to the mounting platform 1, resistance is generated when the locking element 10 rises onto the rising ramp 22. The cover 3 can be connected to the mounting platform 1 in a fixed position for testing purposes and can be loosened again by reverse rotation as required. After passing the functional test, the locking element 10 can jump over the jump edge 23 into the gap between the stop plate 21 and the jump edge 23 after overcoming the rotation resistance and then permanently ensure the connection between the cover 3 and the mounting platform 1.

[0023] FIG. 5 shows that the two components are inserted into each other ( Figure 5a ) and card connection ( Figure 5c ). Here, the locking element 10 is designed with a springy tongue that passes through the slot-shaped undercut, so that the locking element 10 can be deflected into the surface of the mounting platform 1 when it is raised on the rising ramp 22. However, the locking element 10 can also be designed without the slot-shaped undercut. However, in order to overcome the rotational resistance, the wall of the cover 3 must then be pressed outward.

[0024] List of reference numerals:

[0025] 1Installation Platform

[0026] 2 Reinforcement

[0027] 3 Cover hood

[0028] 4 Bolts

[0029] 5 flattened part

[0030] 6 Support / fixed support

[0031] 7 Large radius of the first section

[0032] 8 Second section small radius

[0033] 9 bending section

[0034] 10 Locking element

[0035] 11 Fork tool

[0036] 12 arms

[0037] 13 Cylindrical pin

[0038] 14 Nut

[0039] 15 Metal plate / antenna housing bracket

[0040] 16 First O-ring

[0041] 17 Smaller second O-ring

[0042] 18 Lip seal

[0043] 19 Support surface in cover

[0044] 20 Guide strip in cover

[0045] 21 Stop plate

[0046] 22 Rising Slope

[0047] 23 Jumping Edges

Claims

1. A connection device on an antenna housing, the connection device having: - a circular mounting platform (1) for receiving the antenna circuit board on the upper side, wherein: The bottom side of the mounting platform (1) is provided with reinforcing ribs (2) extending radially relative to the center. - a cover (3) for completely covering the mounting platform (1), - a bolt (4) arranged in the center of the mounting platform (1) for insertion into the antenna housing bracket (15), The connection device is designed as a rotation / locking connection having a first rotation position that can be released without damage and a locking position that cannot be released by further rotation, The bolt (4) is formed as a hollow pin protruding vertically on the bottom side of the mounting platform (1), and the threaded portion of the bolt has two flattened portions (5) parallel to each other.

2. The connection device according to claim 1, characterized in that The symmetry plane of the flattened portion (5) points to the area on the bottom side of the mounting platform (1) where there are no reinforcing ribs (2).

3. The connection device according to claim 1, characterized in that A fork-shaped tool (11) is provided around the joint flattened portion (5), the fork-shaped tool having a flat handle arm (12), on the surface of which a cylindrical pin (13) is arranged, which engages in a hole in the antenna housing bracket (15) after the mounting platform (1) is correspondingly rotated.

4. The connection device according to claim 3, characterized in that - the bolt (4) is surrounded by a first O-ring (16) arranged in the bottom side of the mounting platform (1) to seal relative to the antenna housing bracket (15), and A cylindrical pin (13) arranged on the handle arm (12) of the fork-shaped tool (11) is surrounded by a second O-ring (17) arranged in the handle arm (12) to seal against the antenna housing support (15).

5. A connection device according to any one of the preceding claims, characterised in that - a circumferential support surface (19) is arranged on the inner side of the cover hood (3) at a distance from the hood edge, - an arc-shaped guide strip (20) is arranged between the support surface (19) and the cover edge, the width of the guide strip being almost the same as that of the support surface (19) for rotatably inserting the mounting platform (1), - the distance between the support surface (19) and the guide strip (20) is adapted to the thickness of the surface of the mounting platform (1), - an arc-shaped recess adapted to the guide strip (20) in terms of length and width is provided in the circumferential edge of the mounting platform (1) for placing the mounting platform (1) on the support surface (19).

6. The connection device according to claim 5, characterized in that A stop plate (21) is provided between the guide strip (20) and the support surface (19) in the torsion direction to limit the rotation.

7. The connection device according to claim 5, characterized in that - a bending section (9) is formed at the notch perpendicular to the surface of the mounting platform (1), which engages the guide strip (20) when the cover (3) and the mounting platform (1) are rotated, The thickness of the kinked section is adapted in the joining region to the distance of the guide strip (20) from the edge of the cover.

8. The connection device according to claim 6, characterized in that - an inwardly directed rising ramp (22) is provided in the wall of the cover (3) in front of the stop plate (21) in the direction of rotation, the rising ramp having a stepped edge (23) located at a distance in front of the stop plate (21), - On the first section (7) and the second section (8) of the mounting platform (1) which are engaged between the guide strip (20) and the support surface (19), a locking element (10) pointing radially outward and capable of sliding over a jumping edge (23) is formed in the section area which is located in front in the torsion direction and points to the stop plate (21).

9. The connection device according to claim 8, characterized in that The size of the locking element (10) is adapted to the distance between the stepped edge (23) and the stop plate (21).

10. The connection device according to claim 8, characterized in that The locking element (10) is provided with a resilient tongue having an elastic travel in the plane of the mounting platform (1).

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