EP0451623A1
Expired / Lapsed
EP
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Antenna switch
Assignee: Nokia Oyj
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Filing: 1991-03-27
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Granted: —
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Expires: 2011-03-27
Abstract
Abstract The device relates to an antenna switch for radio telephones, which are provided with an extendible external antenna (1) and a built-in internal antenna (2). The antenna switch comprises a microswitch (4) having a switch arm (6) and a press switch (5). The antenna switch accomplishes the switching-on of the microswitch (4), whereupon the signal route is connected with the internal antenna (2). Respectively, when the external antenna (1) is moved in the reverse direction, the signal route is connected with the external antenna (1). The switch arm (6) is in direct contact with the external antenna (1) so that the contact accomplishes the switching-on of the microswitch (4), when the external antenna (1) is in a partly pushed-in position. The switch arm (6) is situated in close vicinity to the lowest part (15) of the external antenna (1) when the external antenna (1) is in its extended extreme position.
Inventors
- 👤 Timo Saarnimo
- 👤 Ari Léman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 13:19
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/10; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q1/244
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
179 words
Antenna switch for radio telephones, which are provided with an extendible external antenna (1) and a built-in internal antenna (2), which antenna switch comprises a microswitch (4) having a switch arm (6) and a press switch (5), and which antenna switch is arranged to accomplish the switching-on of the microswitch (4), whereupon the signal route is connected with the internal antenna (2), when the external antenna (1) is moved from the extended position to the pushed-in position, and, respectively, to release the switching-on of the microswitch (4), whereupon the signal route is connected with the external antenna (1), when the external antenna (1) is moved in the reverse direction, characterized in that the switch arm (6) is in direct contact with the external antenna (1) so that the contact accomplishes the switching-on of the microswitch (4), when the external antenna (1) is in a partly pushed-in position, and that the switch arm (6) is situated in close vicinity to the lowest part (15) of the external antenna (1) when the external antenna (1) is in its extended extreme position.
Claim 2
Dependent Claim
63 words
Antenna switch according to claim 1 characterized in that the switch arm (6) is an elongated, preferably a planar form piece which is attached to the microswitch (4) at the first end portion (7) thereof and which switch arm (6) is arranged to be situated in direct contact with/in close vicinity to the external antenna (1) at the second end portion (8) thereof.
Claim 3
Dependent Claim
67 words
Antenna switch according to claim 2 characterized in that the microswitch (4) is switched on, when the switch arm (6) and the press switch (5) are pressed down, and that the switch arm (6) is rigidly fixed to the microswitch (4) so that releasing of the switch arm (6) from its pressed-down position is at least partly effected by the elastic forces of the switch arm (6).
Claim 4
Dependent Claim
82 words
Antenna switch according to claim 2 characterized in that the microswitch (4) is switched on as the switch arm (6) and the press switch (5) are pressed down and that the switch arm (6) is pivotally attached to the microswitch (4) so that releasing of the switch arm (6) from its pressed-down position is at least partly effected by an external force acting on the switch arm (6) like e.g. the spring force of the release spring of the press switch (5).
Claim 5
Dependent Claim
82 words
Antenna switch according to any of the above claims 2-4 characterized in that the switch arm (6) and the external antenna (1) are essentially parallel and that the switch arm (6) comprises a V-formed part (10) which is formed within the second end portion (8) and which is parallel to the longitudinal direction of the switch arm (6) and which has essentially a shape of a V in the cross-sectional plane that is perpendicular to the plane of the switch arm (6).
Claim 6
Dependent Claim
94 words
Antenna switch according to claim 5 characterized in that the first side (13) of the V-formed part (10) forms an inclined surface relative to the axial direction of the external antenna (1) and that the first side (13) is situated on the antenna path, which is parallel with the axial direction of the external antenna (1), so that the lowest part (15) of the external antenna (1) pushes against the first side (13) and accomplishes the switching-on of the microswitch (4) when the external antenna (1) is pushed inwards from the extreme extended position.
Claim 7
Dependent Claim
80 words
Antenna switch according to claim 5 characterized in that the switch arm (6) additionally comprises an edge part (12) of the switch arm (6) forming an extension to the V-formed part (10), the edge part being arranged to abut the rigid part of the antenna, which is attached to the mainframe of the radio telephone, when the external antenna (1) is in the extended extreme position, and that the edge part (12) is preferably parallel with the switch arm (6).
References Cited (Backward Citations)
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