WO2000028561A1 - Interrupteur de reseau pour poste de television a circuit de demagnetisation et a interrupteur de deconnexion - Google Patents

Interrupteur de reseau pour poste de television a circuit de demagnetisation et a interrupteur de deconnexion Download PDF

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Publication number
WO2000028561A1
WO2000028561A1 PCT/ES1999/000358 ES9900358W WO0028561A1 WO 2000028561 A1 WO2000028561 A1 WO 2000028561A1 ES 9900358 W ES9900358 W ES 9900358W WO 0028561 A1 WO0028561 A1 WO 0028561A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
disconnection
television
degaussing
network switch
Prior art date
Application number
PCT/ES1999/000358
Other languages
English (en)
Spanish (es)
Inventor
Antonio Vesperinas Roy
Original Assignee
Gestion Desarrollos Electronicos, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from ES9802346A external-priority patent/ES2146550B1/es
Priority claimed from ES9902414A external-priority patent/ES2161174B1/es
Application filed by Gestion Desarrollos Electronicos, S.A. filed Critical Gestion Desarrollos Electronicos, S.A.
Publication of WO2000028561A1 publication Critical patent/WO2000028561A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H7/00—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
    • H01H7/08—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with timing by mechanical speed-control devices
    • H01H7/10—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with timing by mechanical speed-control devices by escapement
    • H01H7/12—Devices for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts with timing by mechanical speed-control devices by escapement mechanical
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/29—Picture reproducers using cathode ray tubes using demagnetisation or compensation of external magnetic fields

Definitions

  • the invention relates to a "ON-OFF" switch for modified televisions and monitors, which is extended by an auxiliary disconnect switch that is incorporated into the re d switch and whose mission is the elimination of energy consumption, in depending on the performance of the device, the stationary term of the demagnetizing circuit of the image tube of said television sets and monitors.
  • the term "apparatus” shall comprise all types of televisions, monitors and any element of representation of the similar image.
  • the image tube used in television sets is usually a cathode ray tube of electromagnetic bending.
  • the flexion or cannon unit, located at the back, works by means of an electronic lightning system with fast-heating cathodes, surrounded by deflector coils that surround the barrel. It is precisely on these coils located in the tube where energy savings are achieved thanks to a switch according to the present invention.
  • degaussing composed of a demagnetizing coil and PTC resistor, mounted on the back of the cathode ray tube or cannon. Its function is to demagnetize the image tube when the device is connected to the network through the main switch.
  • Transitory term of the demagnetizing circuit corresponds to the time from the moment of the connection in which an intensity between 10 to 15 amps is reached up to 300 milliseconds later (equivalent to 15 complete cycles of a 50 Hz frequency sinusoid) in which it drops to milliamps in the last cycle. This time is considered to be sufficient for the coil to completely demagnetize the cathode ray tube.
  • a subject of the invention is a network switch which in turn includes an auxiliary switch which, by the means described below, eliminates the energy consumption of the stationary term demagnetizing circuit of the image tube.
  • the auxiliary disconnect switch will close the circuit before the network switch does and will open the circuit at least 300 ms after the device has been connected via the network switch.
  • the intensity in the demagnetizing circuit is generally of the order of milliamps.
  • the minimum delay of 300 milliseconds is completely independent of the speed of the switch actuation performed by the user. This time is assured only through non-electrical or electronic procedures.
  • the disconnection mechanism acts only by mechanical means, taking advantage of the energy itself provided by the user when executing the action of connecting the device by pressing the button of the main switch.
  • the application is a substitute for existing ones, based on electronic and / or electrical principles, whose most common components are timers, signal amplifiers and relays or triacs, which are always located outside the main switch.
  • the auxiliary disconnect switch integrated in the mains switch is based on mechanical means that allow the opening of the demagnetizing circuit in a delayed way when closing the main circuit.
  • These mechanical means are formed by a combination of cogwheels that, at first, turn against the action of elastic means, to later be defeated by them and cause, with the help of a probe, the opening of the circuit Demagnetizer
  • the auxiliary disconnect switch uses the energy of the user's action on the switch of the network switch when he wants to activate the device and receives the force through the same slide integrated in the button, so that said mechanical force works against the elastic means mentioned above.
  • said elastic means cause, with the help of the probe, the opening of the demagnetizing circuit.
  • Another feature of the present invention is the incorporation, in the structure of said network switch itself, of at least one PTC thermistor intended to control the electrical consumption. Said control of the electrical consumption consists in the modification of the intensity of the demagnetizing circuit of the apparatus where the switch is installed. In another sense, the incorporation of the PTC thermistor is done, according with the present invention, maintaining the structural configuration of the main patent switch.
  • the transmission means comprise a first gear wheel provided with a second gear wheel integral thereto, a third gear wheel coupled by gear to the first gear wheel and a rack coupled by gear to said one.
  • Second cogwheel In this way, the displacement of the rack due to the action of the user on the switch button compresses a torsion spring that is conveniently housed in the first sprocket.
  • the rack is provided with a vertically sliding pivot and damped in compression by a spring, the free end of said pivot being in permanent contact with a cam surface designed to cause the rack to be positioned so that it disengages from said first wheel serrated in its backward travel.
  • retention means of said first gear wheel comprise a probe that runs through an irregular groove formed inside said first gear wheel causing the rotation thereof to be intermittently due to the obstacles encountered by the probe as it reads the path of the cam surface, consequently reducing the angular speed of the first gearwheel.
  • Figure nS 1 is an installation scheme of the switch of the present invention mounted on a television set and the demagnetizing circuit installed on the back of the image tube of said television.
  • Figure nQ 2 is a cross-sectional elevation of the auxiliary switch.
  • Figure nQ 3 is a schematic top view of the auxiliary disconnect switch.
  • Figure 4 is a longitudinal section in schematic elevation of the auxiliary disconnect switch.
  • Figure nQ 5 is a schematic top view of the auxiliary disconnect switch and corresponding control.
  • Figures nQ 6, 7, 8 and 9 correspond to exterior views on the lower side plan in elevation, upper and front plan of the network switch, which within a single housing gathers the network switch and the auxiliary.
  • Figure 10 shows intensity graphs with respect to time with the demagnetizer circuit without disconnection by means of the auxiliary switch and with the demagnetizer circuit with disconnection by means of the auxiliary switch.
  • Figure 11 is a side elevational view of the cursor, provided on the inside of the switch housing.
  • Figure 12 is a top plan view of the cursor.
  • Figure 13 is a side elevational view of the control provided on the inside of the switch housing (16).
  • Figure nQ 14 is a top plan view of the remote control with the cursor positions of the cursor on it.
  • Figure nQ 15 is an exploded perspective view of a second embodiment of a switch according to the present invention, which has been shown without the upper housing for a better visualization of the different elements that form it.
  • Figure 16 is a schematic view illustrating the electrical circuit of the switch of the invention.
  • Figure nQ 17 is a top plan view of the switch shown in Figure nQ 15.
  • Figure nQ 18 is a partial plan view from below of the switch shown in said figure nQ 15.
  • Figure nQ 19 is a side elevation view of the switch of the present invention.
  • FIG. 20 is a front elevation view of the switch of said second embodiment.
  • the different elements that appear in the figures included are: (10) switch, (10.1) network switch, (10.2) auxiliary disconnect switch, (11) television, (12) demagnetizing circuit, (13) graphic intensity-time, (14) intensity-time graph, (15) male terminals, (15.1) contact tongue, (15a) contact tongue, (15b) contact tongue, (15.2) flat area, (15.3) concave zone, (15.4) flat zone, (15.6) contact zone, (16) switch housing, (17) switch cover, (18) housings, (19) housings, (20) housings, (21, 22) cogwheel shafts, (23) cursor, (23.1) bumper, (23.2) rack, (23.3) recessed, (24) gear, (25) gear , (26) gear, (28) control, (28.1) step, (28.2) ramp, (28.3) longitudinal zone, (29) cavity, (30) spring, (31) push button, (32) spring, (33) switch cover ribs, (34) motion transmission media module, (35) flat area of the
  • PTC (51) cogwheel probe, (52) probe contact end, and (53) probe rotation end.
  • the switch (10) is formed by a conventional network switch (10.1) and, therefore, , is outside the scope of the invention, and an auxiliary disconnect switch (10.2), whose function is to interrupt the power supply to the demagnetizing circuit of the television (12) after a certain time after having placed the switch (10) in the position of Connection.
  • the auxiliary disconnect switch (10.2) is housed inside a housing (16) of substantially prismatic configuration, without base and closed by the cover (17), in which holes are provided for the passage of the terminals male (15).
  • the housing (16) has inside ribs (33) that define housings (18, 19, 20) for the elements subject to rotation inside the switch (10.2).
  • a control (28) is provided formed by a channel (28.3), an oblique step (28.1) and a ramp (28.2) arranged between them, as shown in figures nQ 2, 4, 5, 13 and 14.
  • first gear wheel (24) Mounted on the housing (16) and rotating around the axles (21-22) there is a first gear wheel (24), a second gear wheel (25) integral with the gear wheel (24) and a third gear wheel (26 ) that meshes with the said cogwheel (24).
  • the second gearwheel (25) is smaller in diameter than the gearwheel (24).
  • the shafts (21) and (22) that allow the rotation of the sprockets (24, 25, 26) fit into the housings (18, 19, 20) designed for this purpose on the inside of the housing (16).
  • the gearwheel (24) is subjected to the tensioning action of a spring (30) which, as can be seen in Figure 4, is immobilized by one of its ends (30.1) on the gearwheel (24), while on the other end it is immobilized on the cover (17), as shown in figure nQ 4.
  • a spring (30) which, as can be seen in Figure 4, is immobilized by one of its ends (30.1) on the gearwheel (24), while on the other end it is immobilized on the cover (17), as shown in figure nQ 4.
  • the dynamic element of the switch (10) is the cursor (23) which, by the system detailed below, activates the switch network (10.1) and auxiliary disconnect switch (10.2), when pushed (23) through the link or recessed (23.3) which pushes
  • the switch (10.2) is arranged in the connection position as of this moment and the pulling action of the spring (30) on the gearwheel (24) rotates the gearwheel (26) at an angle of approximately 300Q in the opposite direction , while, by the pressure of the spring (29) mounted inside the cavity (23.4), it raises the cursor (23) and its pin (23.1) by jumping the step (28.1) of the control (28).
  • the cursor (23) goes back down the pin (23.1) gently down the ramp (28.2) while the contact (15) and its area (15.2) is lifted, the electrical circuit is opened and the auxiliary switch (15.1) remains disconnection position and, therefore, the demagnetizer circuit open.
  • the different positions and trajectory of said stud (23.1) are as illustrated in Figures 5 and 14.
  • the male terminal (15), as can be seen in Figure 2, has an extension as a contact tongue (15.1), which comprises a flat area (15.2) that extends into a concave area (15.3) that at the same time it extends into an inclined area (15.4), which is the one that in the connection position makes contact with the zone (15.6) and in the disconnected position it separates from it.
  • the switch designated as a whole by (10) consists essentially of a mains switch (10.1) and an auxiliary disconnect switch (10.2) intended to interrupt the power supply to the circuit Demagnetizer (12) of a television (11), after a certain time after having placed the switch (10) in the connection position.
  • said switch (10) also incorporates a PTC type thermistor (50) intended to control the power supply to said demagnetizing circuit (12) of the apparatus (11).
  • Said thermistor has been schematically represented in Figures No. 16, 17, 18 and 19.
  • the control of the current intensity present in the demagnetization circuit (12) of the apparatus (11) is determined by the arrangement of the PTC thermistor (50) which is incorporated in the switch (10), a unlike what happens in conventional devices, in which the thermistor (50) is arranged in a location outside the switch, forming part of the electrical circuit of the device itself.
  • the ceramics used to manufacture the thermistor or thermistors (50) have a nature that is determined by the circuit's own characteristics and, more specifically, by its resistance. More particularly, the PTC type thermistor (50) included inside the switch (10) for the control of the power supply is a resistor of the so-called positive thermal coefficient (PTC).
  • the ceramics can be manufactured according to different chemical compositions from complex titanate (BaTi , 3 , SrTi0 3 , etc.) and can be arranged in simple, double packing configurations, etc., according to the needs of the circuit.
  • the switch (10) comprises a housing (16), see figure nQ 19 of the drawings which is closed by a cover (17) in the mounting position.
  • Said cover which can be seen in figure 2, has internally ribs (33) that define housings (18-20) for the different elements of the switch (10).
  • Said switch (10) is provided with a single push-button (31) which, when operated by the user, acts on one of the contact tabs (15a, 15b) by means of a rack (23.2) whose operation will be described hereafter .
  • the button (31) has an extension (23) provided with a cylindrical pivot (49) adapted to be housed in a hole (41) formed at the end of said rack (23.2), which is part, as discussed above, of a means for transmitting movement of the button (31).
  • Said means for transmitting movement of the button (31) comprise a first gear wheel (24) provided with a second gear wheel (25) integral thereto.
  • the first cogwheel (24) is engaged by gear to a third cogwheel (26), as shown in figure nQ 1.
  • the rack (23.2) is coupled by gear to said second cogwheel (26) as can be seen. in figure nQ 18.
  • the actuation of the button (31) by the user causes the rack (23) to move, which causes the rotation of the sprockets (24, 25) in the same direction and consequently the rotation of the wheel toothed (26) in the opposite direction to these.
  • the rotation of the first gear wheel (24) compresses a torsion spring (46) that is housed in a cavity formed on the surface of said first gear wheel (24).
  • the spring is coupled at its end (47) in a hole (42) of the gearwheel (24), the opposite end (48) being fixed to the cover (17) of the switch (10).
  • the rotation shafts (21) and (22) allow the rotation of the sprockets (24, 25, 26) respectively.
  • Said shafts (21, 22) fit into respective housings designed for this purpose in the cover (17) of the switch (10).
  • the rack (23.2) is provided with a pivot (37) that is vertically slidable and on which a spring (38) conveniently housed in a cavity (39) of compression acts on compression.
  • the free end (40) of the pivot (37) is in permanent contact with an inner cam surface (44) formed in a carcass area (16), as shown in figures nQ 19 and 20.
  • the inner cam surface (44 ) is conveniently designed to cause the positioning of the rack (23.2) so that it is disengaged from said first gear wheel (24) in its reverse travel.
  • the movement transmission means of the button (31) also includes means for retaining the first gear wheel (24) to reduce its angular speed.
  • Said retention means comprise a probe (51), see figure nQ 1, formed by a small rod configured by a straight section whose ends (52, 53) are opposite bent at a substantially right angle to said straight section of the rod .
  • the end (52) or contact end of the probe (53) runs through a groove (42), see figure nQ 18, which is formed on the surface of the first sprocket (24).
  • the groove (42) runs substantially along the periphery of the gearwheel (24) and has an irregular path and bottom.
  • the opposite end (53) of the probe (51) is housed in a hole (45) of the module (34) where the motion transmission means are arranged to allow the rotation of the probe (51) in accordance with the path followed by the end (52) inside the groove (42).
  • This causes the rotation of the cogwheel (24) to be intermittently due to the obstacles that the end (52) of the probe (51) is in its path through the groove (42) of said cogwheel (24) ) thereby reducing its angular velocity.
  • the actuation of the button (31) causes the slide of the rack (23.2) and the activation of the network switch (10.1) and the auxiliary disconnect switch (10.2).
  • Said drive also causes the end (40) of the pivot (37) read the cam surface (44), see figure nQ 19, and allow the rack (23.2) to drive the sprockets (24, 25 and 26) so that the contact tabs (15a, 15b) are coupled thanks to the action of the wedge (43) of the gearwheel (26), which causes the flat area (35) of the contact tongue (15a) to descend towards the flat area (36) of said contact tongue (15a ) closing the electrical circuit and positioning the switch (10.2) in the on state. From this moment, the spring (46), figure 1 and 5, acts on the first gear wheel (24) by turning the third gear wheel (26) in the opposite direction.
  • the assembly formed by the pivot (37), the cam surface (44) and the spring (38) causes that, in the reverse of the rack (23.2), it uncouples the cogwheel (24) and open the electrical circuit.
  • the auxiliary switch (10.2) is in the disconnected position and, therefore, the demagnetizing circuit is open.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Abstract

L'invention concerne un interrupteur de réseau équipé d'un interrupteur auxiliaire de déconnexion pourvu, à son tour, de moyens de transmission permettant l'ouverture temporisée du circuit de démagnétisation de l'appareil au moment de la fermeture du circuit principal. L'interrupteur comprend un bouton poussoir (31) agissant sur une languette (15A) et au moins une thermistance CTP (34) assurant le contrôle de l'approvisionnement électrique du circuit (12). Les moyens de transmission comprennent deux roues dentées (24, 25) solidaires, une troisième roue dentée (26) en prise avec la roue (24) et une crémaillère (23) en prise avec la roue (25). Le déplacement de la crémaillère (23) comprime un ressort de torsion (30) logé dans la roue (24). La crémaillère (23) présente un pivot (23.1) en contact avec une surface de came (28) du boîtier (16) qui entraîne le désaccouplement de la crémaillère (23) de la roue dentée (24) lors de son retour.
PCT/ES1999/000358 1998-11-11 1999-11-10 Interrupteur de reseau pour poste de television a circuit de demagnetisation et a interrupteur de deconnexion WO2000028561A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES9802346A ES2146550B1 (es) 1998-11-11 1998-11-11 Interruptor de red para televisor con desconexion degaussing.
ESP9802346 1998-11-11
ES9902414A ES2161174B1 (es) 1999-11-04 1999-11-04 Interruptor de red para televisor con desconexion degaussing.
ESP9902414 1999-11-04

Publications (1)

Publication Number Publication Date
WO2000028561A1 true WO2000028561A1 (fr) 2000-05-18

Family

ID=26155187

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES1999/000358 WO2000028561A1 (fr) 1998-11-11 1999-11-10 Interrupteur de reseau pour poste de television a circuit de demagnetisation et a interrupteur de deconnexion

Country Status (1)

Country Link
WO (1) WO2000028561A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB641313A (en) * 1948-03-19 1950-08-09 Frank Heaton Improvements in push-button devices for use in controlling electric circuits
DE835847C (de) * 1951-01-25 1952-04-07 Willy Beckmann Schalter fuer elektrisch betaetigte Fahrtrichtungsanzeiger von Kraftfahrzeugen
GB799665A (en) * 1954-09-10 1958-08-13 English Electric Co Ltd Improvements in and relating to escapement devices
FR1199866A (fr) * 1957-09-19 1959-12-16 Rau Swf Autozubehoer Commutateur électrique pour la mise en circuit périodiquement simultanée d'un essuie-glace et d'un lave-glace de voitures automobiles
US5093755A (en) * 1988-07-15 1992-03-03 Deutsche Thomson-Brandt Gmbh Circuitry for demagnetizing the mask in a color picture tube
EP0920037A2 (fr) * 1997-11-26 1999-06-02 Satori Electric Co., Ltd. Commutateur double avec succession des manoeuvres échelonnée

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB641313A (en) * 1948-03-19 1950-08-09 Frank Heaton Improvements in push-button devices for use in controlling electric circuits
DE835847C (de) * 1951-01-25 1952-04-07 Willy Beckmann Schalter fuer elektrisch betaetigte Fahrtrichtungsanzeiger von Kraftfahrzeugen
GB799665A (en) * 1954-09-10 1958-08-13 English Electric Co Ltd Improvements in and relating to escapement devices
FR1199866A (fr) * 1957-09-19 1959-12-16 Rau Swf Autozubehoer Commutateur électrique pour la mise en circuit périodiquement simultanée d'un essuie-glace et d'un lave-glace de voitures automobiles
US5093755A (en) * 1988-07-15 1992-03-03 Deutsche Thomson-Brandt Gmbh Circuitry for demagnetizing the mask in a color picture tube
EP0920037A2 (fr) * 1997-11-26 1999-06-02 Satori Electric Co., Ltd. Commutateur double avec succession des manoeuvres échelonnée

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