KR20050029011A - Method for winding a wire to low voltage vobin in flyback transformer - Google Patents

Abstract

A method for winding a low-voltage bobbin of a flyback transformer is provided to combine forward windings with reverse windings when wires are wound on a low-voltage bobbin, thereby reducing the length of wires and a winding time. The first wire is wound with predetermined number of turns through a reverse winding(301), and is connected by being wound on a pin 9 set to an E1 terminal(302). The wound first wire is re-connected by being wound on a pin 6 set to a ground terminal(303). The first wire is wound on a slit B with 3 turns in clockwise direction through a forward winding up to a pin 7 prior to the pin 6(304). The first wire is connected by being wound on a pin 5 set to an E2 terminal through a forward winding in clockwise direction with 20 turns(305), and an end of the first wire is cut(306). The second wire is sequentially wound on slots with 30 turns each, through a forwarding winding, and the second wire coming from one of the slots is wound on a pin 1 set to a collector terminal(307). The second wire connected to the pin 1 is sequentially wound on slits with 30 turns each, through a reverse winding(308), and an end of the second wire is cut(309).

Description

Method for winding a wire to low voltage vobin in flyback transformer}

The present invention relates to a flyback transformer, and more particularly, to a low-pressure bobbin winding method of a flyback transformer capable of winding with a small amount of wire in the flyback transformer and shortening the winding time.

In general, a cathode ray tube of color television consists of an electron gun emitting a hot electron beam and a fluorescent screen coated with a combination of R, G and B phosphors to provide the desired color and image by the emitted electron beam. In addition, deflection wires, acceleration and focusing wires, etc. for controlling the electron beam are provided. In addition, since the cathode ray tube of such a structure is usually applied with a high voltage of 25 KV or more to accelerate and focus an electron beam, a flyback transformer is provided to generate a high voltage of several tens of KV or more as described above.

As shown in FIG. 1, the flyback transformer providing a high voltage current includes a case 12 having a through hole 12 formed therein, and a cylindrical secondary wire assembly 30 embedded in the case 10 and connected to a cathode ray tube. And a primary wire assembly 20 inserted into the secondary wire assembly 30, a magnetic core 40 inserted into the primary wire assembly 20, and a portion of the secondary wire assembly 30. An anode cap 14 connected to the high voltage side, the cover 50 of the case 10, and a circuit element 52 embedded in the cover 50, and the like.

In the above, the primary and secondary wire assemblies 20 and 30 are made by winding the wires 22 and 32 to cylindrical bobbins 24 and 34 made of an insulator, respectively, wherein the primary wires 22 The applied voltage (primary voltage) induces a secondary voltage boosted by the secondary wire 32 due to the mutual induction, and the secondary voltage induced by the secondary wire 32 causes the anode cap 14 Through the cathode ray tube. At this time, the degree of boosting is determined in proportion to the winding ratio of the primary wire 22 and the secondary wire 32.

Among the above, the low voltage bobbin 24 has a plurality of slits A to H in which a wire having an arbitrary width is wound, and a plurality of pins P1 to P10 to be connected to predetermined terminals of the circuit, respectively, as shown in FIG. .

The plurality of pins provided in the low voltage bobbin 24 are specifically, a B + terminal to which power is applied, a collector terminal to which a triangular wave pulse is applied, a ground (GND) terminal to be grounded, and a voltage drawing E1, E2, E3 terminal, H terminal connected to the heater (heater) and so on.

By the way, in connecting the wire to the low-pressure bobbin 24 as described above, it was conventionally wound only in a constant direction. For example, since only the winding of the wire winding in the clockwise direction is performed, the number of turns of the wires appearing in the pins of the low pressure bobbin increases, so that the soldering time is difficult when the pins are mounted on the substrate, and the time required for the winding is reduced. Many problems occurred.

The present invention has been proposed to solve the above-mentioned conventional problems, and an object thereof is to perform a combination of the winding line and the reverse winding when winding a wire in a low pressure bobbin, thereby reducing the length and time of the wire used for the winding. To provide a low-voltage bobbin winding method of the flyback transformer.

As a construction means for achieving the above object, the present invention is a low voltage bobbin winding method of a flyback transformer winding the first coil and the second coil in a cylindrical low pressure bobbin having a plurality of slots and a plurality of pins, A first step of winding the GND and the different voltage drawing pins with the first wire in a predetermined order by a predetermined number of turns; A second step of continuously connecting the first wire to the low voltage bobbin in a reverse order to the first step between the ground (GND) and the respective voltage drawing pins; A third step of forming the first coil by cutting the first wire; A fourth step of connecting the second wire from the pin for power supply (B +) terminal to the pin for collector terminal by winding on a low voltage bobbin; A fifth step of continuously connecting the second wire from the collector terminal pin to the power supply (B +) terminal pin with a reverse winding on a low voltage bobbin; And forming a first coil and a second coil by cutting the second wire to form a second coil.

In the winding method of the low-pressure bobbin according to the present invention, in the first step, after winding the first wire to the heater terminal pin, and then wound up on the low-pressure bobbin, wound again on the ground terminal pin, low pressure Reverse winding on the bobbin and wound on the pin for E1 terminal, again winding on the low voltage bobbin, then winding on the ground terminal pin, and in the second step, the first wire connected to the ground terminal pin is again put on the bobbin. After winding, it is wound up and connected to the heater terminal pin, and after winding the bobbin on the bobbin, and then wound around the pin for E2 terminal, in the fourth step, the second wire is wound around the pin for B + terminal and connected to the bobbin The winding is connected to the collector terminal pin by winding, and in the fifth step, the second wire wound around the collector terminal pin may be wound on the bobbin and then wound around the pin for B + terminal.

Further, in the low-voltage bobbin winding method according to the present invention, in the first step, the first wire is wound around the pin for E3 terminal, and then wound up on the low-voltage bobbin, and then wound around the pin for heater terminal. After that, it is then wound around the ground terminal pin and connected, and then the reverse winding on the low-voltage bobbin, and then wound around the pin for E1 terminal, in the second step, after winding the first wire connected to the pin for E1 terminal to the bobbin Winding wire is connected to the ground terminal pin, and after winding the bobbin on the bobbin, and then winding around the heater terminal pin, then winding on the low voltage bobbin, then winding around the pin for E3 terminal, and then on the low voltage bobbin After the power line, it is wound on the pin for E2 terminal, and in the fourth step, the second wire is wound around the pin for B + terminal, connected to the bobbin, and then wound around the 600Vpp lead-out pin. After collec It is connected to the pin for terminator, and in the fifth step, the second wire connected to the collector terminal pin may be wound on the bobbin, and then wound around the pin for B + terminal.

Further, in the low-voltage bobbin winding method according to the present invention, in the first step, the first wire is wound around the pin for the E1 terminal, reverse wound on the low-voltage bobbin, and then wound around the pin for the heater terminal, and then the low pressure is continued. Reverse winding on the bobbin and wound around the ground terminal pin. In the second step, the first wire connected to the ground terminal pin is wound again on the bobbin, and then connected to the heater terminal pin. After the power line is connected to the pin for E1 terminal, it is connected to the pin for E2 terminal, and then wound around the pin for E2 terminal, and in the fourth step, the second wire is connected to the pin for B + terminal, After winding, it is wound on the pin for V1 terminal, and again wound on the bobbin, and then connected to the collector terminal pin.In the fifth step, the second wire wound on the collector terminal pin is wound on the bobbin, and then the B + terminal is used. Hoist on pin and connect Can.

In addition, in the low-voltage bobbin winding method according to the present invention, it is preferable that the total number of turns of the winding of the fourth stage and the total number of turns of the reverse winding of the fifth stage are the same.

Hereinafter, a low voltage bobbin winding method of a flyback transformer according to the present invention will be described in detail with reference to the accompanying drawings.

In the first embodiment described below, pin P1 of FIG. 2 is a collector terminal, pin P3 is a power supply B + terminal, pin P5 is an E2 terminal, pin P6 is a ground (GND) terminal, and pin P7 Set to H terminal and pin P9 to E1 terminal.

3 is a flow chart showing a first embodiment of the winding method of the low-pressure bobbin according to the present invention, Figures 4a to 4g is a process diagram showing the winding operation state of each step shown in Figure 3, With reference to the low-voltage bobbin winding method of the present invention will be described sequentially. Each of the drawings shown in FIGS. 4A to 4G separately illustrates the performance state of each step of the winding method to be described below. Finally, each winding process of FIGS. 4A to 4G is continuously performed to provide a low pressure bobbin. The winding process is complete.

In general, the low-pressure bobbin 24 has a high-voltage side is connected to the collector end and the primary wire is wound on the low-pressure side is connected to the power supply B +, and also for the low pressure withdrawal E1, E2 and H terminals on the ground GND middle tap Connected wire is wound. It is preferable to wind each wire in a minimum step without cutting, and the winding method will be described sequentially.

First, the first wire is wound around the pin P7, which is a heater (H) terminal, and then a predetermined number of turns (for example, a reverse winding) is performed on one slit (for example, slit A) of the low pressure bobbin 24. For example, it is wound by three turns) and wound around the ground terminal P6 to be connected (301). Figure 4a shows the winding state of the low-pressure bobbin in which the process was performed, both ends of the first wire is connected to the pins P6, P7, respectively, the middle of which is wound counterclockwise to the slit A of the low-pressure bobbin have.

Next, the first wire connected to the pin P6 is wound around the slit A by a predetermined number of turns (for example, 10 turns), and then wound around the pin P9 set as the E1 terminal (302). 4B is a side view of the low pressure bobbin that has been wound by step 302 above. That is, it shows the state wound around pin P9 after winding to slit A counterclockwise from pin P6.

Subsequently, the first wire wound on the pin P9 is continuously wound to any other slit (for example, slit B) by a power line for a predetermined number of turns (for example, 10 turns), and then the pin is set as a ground terminal. Rewind it to P6 and reconnect it (303). 4C is a low-voltage bobbin in a state of winding from the pin P9 to the pin P6, that is, clockwise.

By the above steps 302 and 303, a coil having 20 turns in a constant direction is formed between the pins P9 and P6.

Subsequently, as shown in FIG. 4D, winding 3 turns clockwise in the slit B by the regime line from pin P6 to pin P7 where the first winding was started earlier (304). In this step, a coil having six turns in a predetermined direction is formed between the pins P7 and P6.

Next, as shown in FIG. 4E, the first wire connected to the pin P7 is subjected to a winding line 20 turns clockwise to the slit B, and then wound around the pin P5 which is an E2 terminal (305). The end of the first wire is cut (306).

By performing the above step 306, the winding of the heater voltage and the predetermined E1, E2, low voltage circuit for drawing the heater voltage is completed.

Then, as shown in Figure 4f, after winding the end of the new second wire from the pin P 3 set to the power supply B + stage, and then winding in a turn by 30 turns in slots A, B, C, D in turn In operation 307, the second wire from the slot D is wound around the pin P1 set as the collector terminal.

Subsequently, as shown in FIG. 4G, the second wire connected to the pin P1 is wound around the slit E, F, G, and H in turn by 30 turns, and then wound around the pin P3. 308, the end is cut off (309).

In this way, a coil having 240 turns in a predetermined direction is formed between the collector terminal P3 and the power supply terminal B +.

After performing all of the above steps, looking at the number of times the wire is wound around each pin, the pins P7 and P6 is the number of times the wire is wound twice, but the remaining pins P1, P3, P5, P9 is once. In the conventional method, since the pins P9 to P1 must be wound in the same manner as the present invention only by the regime line, the wire is wound twice to not only all the pins P7 and P6 but also the remaining pins P1, P3, and P9. In the present invention, since a continuous wire that is not cut once is wound on the pins P7 and P6, there is no problem in maintaining connection or firmness even if only one turn is performed. It is safe to wind more than once to ensure a strong connection. Therefore, when the winding method according to the present invention is applied, the number of turns of the wire wound on each pin can be reduced as compared with the conventional art. As a result, when the low voltage bobbin wound with the wire is mounted, a poor soldering of each pin is prevented. can do.

In addition, in the case of winding the coil in the low-pressure bobbin according to the present invention as described above, since the wire is cut only two times, it can be performed in two continuous winding process.

In the above-described winding method, the number of turns to be wound and the pins to which the wire is wound can be changed according to the design of the corresponding low pressure bobbin.

5 to 7 are flowcharts showing another embodiment of the present invention.

In the embodiment shown in Fig. 5, after winding the first wire to the pin for E3 terminal, after winding 10 turns on the low pressure bobbin and wound around the heater terminal pin (501), and then on the low pressure bobbin After winding 3 turns, it is connected to the ground terminal pin by winding (502), and then, after winding 10 turns on the low voltage bobbin, the winding is connected to the pin for E1 terminal (503).

Then, after changing the winding direction, successively with the first wire connected to the pin for E1 terminal, after winding 10 turns to bobbin and winding around the pin for ground terminal (504), the three turns on the bobbin regime After winding the wire to the pin for the heater terminal is connected (505), after winding 10 turns, and wound around the pin for E3 terminal (506), after winding the turn 20 turns to connect to the pin for E2 terminal (507). Then, the end of the first wire is cut (508). Thus, the first coil connected to the E3 terminal, the H terminal, the ground terminal, and the E3 terminal is completed.

Next, while the winding direction is the same (forward direction), the second wire is wound around the B + terminal pin and connected, and after winding 45 turns on the bobbin, the winding is connected to the 600Vpp drawing pin (509), and the bobbin again. After winding 45 turns on the phase and wound around the collector pin pin (510).

Next, the winding direction is changed, and the second wire connected to the collector terminal pin is wound 90 turns on the bobbin, and then wound around the B + terminal pin (511), and the end of the first wire is cut (512). ). As a result, a second coil connected to the power supply B + terminal and the collector terminal is completed.

In the embodiment shown in Figure 6, after winding the first wire to the heater terminal pin, and after winding three turns on the low pressure bobbin wound around the pin for the ground terminal (601), the low voltage bobbin 18 After winding the turn, it is wound around the pin for E1 terminal and connected (602).

Subsequently, after changing the winding direction to the forward direction, the first wire connected to the pin for E1 terminal is wound on the bobbin by winding 18 turns and connected to the ground terminal pin (603), and then 3 turns on the low voltage bobbin. After winding the wire and connected to the heater terminal pin (604), and finally winding 30 turns on the low-pressure bobbin winding after winding the pin for E2 terminal (605), cut the wire (606).

Then, after winding the second wire to the pin for the B + terminal, and connected to the collector terminal pin by winding 110 turns on the bobbin (607), the winding direction is changed to the second wound on the pin for the collector terminal After winding 110 turns on the bobbin with a wire, it is wound around the pin for B + terminal and connected and cut (608,609).

In the embodiment shown in Fig. 7, the first wire is wound around the pin for E1 terminal in a continuous state with the winding direction set in the reverse direction, and then, after winding 10 turns on the low voltage bobbin, (701). After winding three turns on the low voltage bobbin, it is wound around the pin for ground terminal and connected (702).

Next, the winding direction is changed to the forward direction, and successively, the first wire connected to the ground terminal pin is wound three turns on the bobbin, and then wound around the heater terminal pin (703), and 10 turns on the bobbin. After winding the wire to the pin for E1 terminal (704), after winding 20 turns on the bobbin and wound around the pin for E2 terminal (705), the first wire is cut (706).

Then, the second wire is connected to the pin for B + terminal, and after winding 40 turns on the bobbin, and wound around the pin for V1 terminal (707), after winding 80 turns on the bobbin, winding around the collector pin for connection. (708).

Then, after the winding direction is changed, the second wire wound on the collector terminal pin is wound 120 turns on the bobbin, and then wound on the B + terminal pin to be connected (709), and the second wire is cut (710). ).

As described above, the present invention forms the first coil and the second coil in the low pressure bobbin by combining the regime line and the reverse winding, thereby reducing the number of times of wire cutting and the number of windings on the pin, thereby reducing the amount of wire consumed and time. As a result, it is possible to improve productivity by shortening the winding time. In addition, by reducing the number of times the wire is wound around each pin of the low-pressure bobbin, there is an excellent effect to prevent the poor soldering of the pin to improve the reliability.

1 is an exploded perspective view showing the entire structure of a flyback transformer,

2 is a side and front view showing the structure of a low pressure bobbin in a flyback transformer,

3 is a flowchart illustrating a winding method of a low pressure bobbin according to the present invention,

4A to 4G are diagrams illustrating each operation step of the low pressure bobbin according to the present invention.

5 to 7 is a flow chart showing a low-voltage bobbin winding sequence according to another embodiment of the present invention.

Claims (5)

In the low-pressure bobbin winding method of the flyback transformer for winding the first coil and the second coil in a cylindrical low pressure bobbin having a plurality of slots and a plurality of pins, A first step of reverse winding between the ground GND and the different voltage drawing pins by a predetermined number of turns with the first wire in a predetermined order; A second step of continuously connecting the first wire to the low voltage bobbin in a reverse order to the first step between the ground (GND) and the respective voltage drawing pins; A third step of forming the first coil by cutting the first wire; A fourth step of connecting the second wire from the pin for power supply (B +) terminal to the pin for collector terminal by winding on a low voltage bobbin; A fifth step of continuously connecting the second wire from the collector terminal pin to the power (B +) terminal pin with a reverse winding on a low voltage bobbin; and A sixth step of forming the second coil by cutting the second wire Low pressure bobbin winding method of a flyback transformer consisting of. The method of claim 1, In the first step, the first wire is wound around the pin for heater terminals, and then wound on a low voltage bobbin, wound on a ground terminal pin, and then wound on a low voltage bobbin, and wound on a pin for E1 terminal. After winding again on the low voltage bobbin, wind it to the ground terminal pin, In the second step, after winding the first wire connected to the pin for the ground terminal on the bobbin again and wound on the heater terminal pin, and then connected to the pin for E2 terminal after winding the bobbin on the bobbin, In the fourth step, the second wire is wound around the B + terminal pin, and then connected to the collector terminal pin by winding on the bobbin. In the fifth step, the winding of the second wire wound on the collector terminal pin is wound on the bobbin, and then wound around the B + terminal pin winding low voltage bobbin winding method of the transformer. The method of claim 1, In the first step, the first wire is wound around the pin for E3 terminal, and then it is wound on the low pressure bobbin, and it is wound up again on the heater terminal pin. Winding up the pin, connect it to the low voltage bobbin and then wind it around the pin for E1 terminal, In the second step, after winding the first wire connected to the pin for E1 terminal to the bobbin and wound around the pin for the ground terminal, and after winding the wire on the bobbin, and then wound around the pin for the heater terminal, and then connected to the low pressure bobbin After winding the power supply on the wire, connect it to the pin for E3 terminal, and then, after the power winding on the low voltage bobbin, wind the wire to the pin for E2 terminal, In the fourth step, the second wire is wound around the B + terminal pin, connected to the bobbin wire, and then wound around the 600Vpp lead-out pin, and again connected to the bobbin pin for the collector terminal. In the fifth step, winding the second wire connected to the collector terminal pin on the bobbin and then wound around the B + terminal pin is connected to the low-voltage bobbin winding method of the flyback transformer. The method of claim 1, In the first step, the first wire is wound around the pin for the E1 terminal, and then wound up on the low voltage bobbin, and then wound around the pin for the heater terminal, and then wound up on the low voltage bobbin, and then wound around the pin for the ground terminal. And In the second step, the first wire connected to the ground terminal pin is again wired to the bobbin, and then connected to the heater terminal pin, and the wire is continuously wired to the bobbin, and then to the E1 pin, and the bobbin is continuously After the power on the phase and wound around the pin for E2 terminal, In the fourth step, the second wire is connected to the pin for the B + terminal, after winding on the bobbin, wound around the pin for V1 terminal, again on the bobbin for winding, and then connected to the collector terminal pin. In the fifth step, the winding of the second wire wound on the collector terminal pin is wound on the bobbin, and then wound around the B + terminal pin winding low voltage bobbin winding method of the transformer. The method according to any one of claims 1 to 4, And the total number of turns of the power winding in the fourth step and the total number of turns of the reverse winding in the fifth step are the same.