JP3217047B2 - High voltage resistor pack and its assembly method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a CRT (Cathode
The present invention relates to a high-voltage resistance pack in which a variable resistor or the like for adjusting a focus voltage of a ray tube (cathode ray tube) is housed in an insulating case, and an assembling method thereof.

[0002]

2. Description of the Related Art Conventionally, a so-called focus pack, which is provided with a variable resistor for adjusting a focus voltage of a CRT and has a capacitor housed in a case, is provided on the ground side of the capacitor. Lead wires may be attached to retrofit terminals. The method of attachment was to wind a lead wire extending from a capacitor around a retrofit terminal and solder it.

[0003]

In the case of the above-mentioned prior art, even if a lead wire extending from a capacitor is wound around a post-installed terminal and soldered, there is no place where the lead wire engages with the wound portion. If the attachment is not sufficient, there is a disadvantage that the lead wire easily moves in the longitudinal direction of the terminal due to external force, and the attachment strength is weak. In addition, the number of manufacturing steps is also long.

[0004] The present invention has been made in view of the above-mentioned conventional technology, and has a high attachment strength of a lead wire of a terminal portion.
An object of the present invention is to provide a high-voltage resistance pack that can be easily assembled and a method for assembling the same.

[0005]

According to the high voltage resistor pack of the present invention, a capacitor and a resistor substrate are accommodated in a case, and the resistor substrate has a ground terminal, a capacitor input terminal, a focus and a screen voltage output terminal. The resistor substrate is housed in the case with the side from which each terminal connected to the coil of the flyback transformer or the like protrudes facing the opening of the case. In a state where the resistor substrate is stored, an epoxy resin is poured into the opening of the case, and an insulating resin layer that covers the resistor substrate and seals the inside of the case is formed. And
One lead wire of the capacitor is locked by a lead wire locking portion provided at the bottom of the case, and is inserted into a through hole (not shown) at the tip of the terminal and soldered. The other lead wire is wound around a locking projection of a post-installed terminal, which is a high-voltage resistance terminal and is sandwiched between holding portions formed on the edge of the case.

The retrofit terminal has a projection protruding from a base end thereof, and a locking projection protruding in a direction opposite to the projection. The groove is formed in an edge of the case. The protruding piece is fitted, and the lead wire of the electronic component provided in the case is wound around the locking projection.

According to another aspect of the present invention, there is provided a high-voltage resistor pack having a variable resistor to which a high voltage is applied, and having a holding portion for holding a retrofit terminal in a case in which a circuit board provided with the variable resistor is housed. In the assembling method, the post-installed terminal is provided with a projection and a locking projection protruding in a direction opposite to the projection, and the holding portion at the edge of the case includes a groove in which the projection is fitted. Forming a fusion protrusion, melting the retention portion and the fusion protrusion after attaching the retrofit terminal, and wrapping a lead wire of an electronic component provided on the case around the locking projection provided integrally with the retrofit terminal. This is a method of assembling a high voltage resistance pack.

The electronic component is a capacitor, and one lead wire of the capacitor is wound around a terminal protruding from the circuit board, and the other lead wire is wound around the locking projection.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 8 show an embodiment of the present invention. The high-voltage resistor pack of this embodiment is used for a so-called focus pack for adjusting a focus voltage and a screen voltage of a CRT. 1 houses a capacitor 2 and a resistor substrate 15. The resistor substrate 15 is provided with a ground terminal 3, a capacitor input terminal 4, and a focus and screen voltage output terminal 5 protruding therefrom. The resistor substrate 15 is housed in the case 1 with the side from which the terminals 3 to 5 connected to the coils of the flyback transformer or the like protrude facing the opening of the case 1. And
In a state where the resistor substrate 1 is housed, an epoxy resin is poured into the opening of the case 1 to form an insulating resin layer 6 that covers the resistor substrate 15 and seals the inside of the case 1. . This ensures internal insulation,
No resin flows inside the resistor substrate 15 and the resistor substrate 1
A brush described later can be slid on the resistor on the surface of No. 5.

[0010] One lead wire 7 of the capacitor 2 is locked by a lead wire locking portion 8 provided on the bottom of the case 1, inserted through a through hole (not shown) at the tip of the terminal 4 and soldered. Have been. Further, the other lead wire 7 is wound around a locking projection 11 of a post-installed terminal 10 which is a terminal for high-voltage resistance mounted and sandwiched between holding portions 1b formed on the edge 1a of the case 1 and soldered. ing.

As shown in FIGS. 4 to 6, the post-installed terminal 10 has a locking projection 11 for the lead wire 7 formed at the base end, and a terminal portion 18 extending from the base end to the front end. A bulging portion 17 is formed along the direction. Further, a through hole 14 is formed in the center of the retrofitting terminal 10, and a bulging portion 17 is continuously formed around the through hole 14, and the bulging portion 17 is provided in a Y-shape. . In addition, the locking projection 11
Is formed in a T-shape, and the T-shaped head is an engaging portion 11a which is wound around and engaged with the lead wire 7 so as not to come off. The post terminal 10 has a locking projection 11.
A pair of convex pieces 12 are provided in a direction opposite to the direction in which the convex pieces 12 protrude, and a slight bulging portion 13 is formed on a side surface of the convex piece 12.

The post-installed terminal 10 is provided with a groove 1 as an engaging portion formed on an edge 1a of the case 1 shown in FIG.
c, the convex piece 12 is fitted, the molten protrusion 1d protruding from the case edge 1a is inserted into the through hole 14, and both sides of the holding part 1
b. Then, the holding portion 1b and the fusion protrusion 1d are melted, and as shown in FIG.
Is securely held.

The case 1 is provided with focus voltage and screen voltage adjustment knobs 9. The adjustment knob 9 is provided with a brush 16 slidably in contact with a resistor on a resistor substrate 15, and has focus and screen voltage adjustment knobs 9. Adjustment is possible.

In the high-voltage resistance pack of this embodiment, the lead wire 7 of the capacitor 2
1 and soldered, so that the locking projections 11
The winding portion of the lead wire 7 is wound around the engaging portion 11a and electrically connected to the engaging portion 11a, so that the lead wire 7 does not come off or move from the locking projection 11. In addition, the winding operation is easy because the locking projection 11 is provided so as to protrude outward at the opening of the case 1. Further, the protruding piece 12 is provided on the retrofitting terminal 10, and this protruding piece 12 is fitted into the groove 1c of the case edge 1a and locked and held and fixed, so that it is securely fixed in addition to the holding by the holding portion 1b. . Further, the bulging portion 1 is
Since the groove 3 is formed, it is securely held when fitted into the groove 1c.

In the high voltage resistance pack of the present invention, the shape of the terminal portion is not limited, and the shape of the locking projection may be any as long as it has an engaging portion. Absent. Further, the retrofit terminal may be a terminal to which a lead wire of a capacitor or other electronic component is connected, and the type of the electronic component and the method of connecting the lead wire are not limited.

[0016]

According to the high voltage resistance pack of the present invention, a locking projection is provided on a retrofit terminal fixed to the edge of the case, and the lead wire of the electronic component is wound around the engaging portion of the locking projection. Therefore, the winding of the lead wire becomes easy and reliable, and the mounting strength can be increased. Furthermore, the mounting strength of the post-installed terminal to the case is very high, and the work of winding the lead wire is easy, so that a highly reliable lead-wire and terminal mounting structure can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a high-voltage resistance pack according to the present invention.

FIG. 2 is a partially cutaway right side view of the high-voltage resistance pack according to the embodiment.

FIG. 3 is a bottom view of the high-voltage resistance pack of the embodiment.

FIG. 4 is a plan view of a retrofit terminal according to the embodiment.

FIG. 5 is a front view of a retrofit terminal according to the embodiment.

FIG. 6 is a right side view of the retrofit terminal according to the embodiment.

FIG. 7 is a perspective view showing an edge portion of the case according to the embodiment.

FIG. 8 is a plan view showing a use state of the retrofit terminal according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 1a Case edge 1b Holding part 7 Lead wire 10 Retrofit terminal 11 Locking projection 11a Engaging part 11c Groove part 12 Protrusion piece 13, 17 Swelling part 14 Through-hole 18 Terminal part

Claims (3)

(57) [Claims] A variable resistor to which a high voltage is applied;
The circuit board on which the variable resistor is provided is housed in an insulating case, and a capacitor and a resistor base are mounted on the case.
In the high-voltage resistance pack in which the board is accommodated , a ground terminal and a capacitor input terminal are protrudingly provided on the resistor substrate, and the side from which each terminal of the resistor substrate protrudes is set to the opening side of the case. The board is housed in the case, and in a state where the resistor board is housed, epoxy resin is poured into an opening of the case, and covers the resistor board, seals the inside of the case, and forms one of the capacitors. The lead wire is locked to a lead wire locking portion provided on the bottom of the case and connected to the capacitor input terminal ,
Connect the other lead of the capacitor to the end of the case.
The terminal is wound around a locking projection of a terminal attached to the edge, and the terminal is attached to the terminal from the base end thereof.
The case is provided with a convex piece protruding in the opposite direction to the protrusion.
The convex piece fits into the groove formed in the edge and the retrofit end
High-voltage resistor package,
H. 2. A variable resistor to which a high voltage is applied,
In a method of assembling a high-voltage resistance pack in which a holding portion for holding a retrofit terminal is provided in a case in which a circuit board and a capacitor are housed in which the variable resistor is provided, the retrofit terminal has a convex piece and a convex piece. Is provided with a locking projection protruding in the opposite direction, and a groove for fitting the convex piece and a fusion projection are formed in the holding portion at the edge of the case.
One lead of the capacitor
Wrapped terminals projecting from the substrate to melt the attachment after the holding portion and the molten projection of the rear attachment pin, the said locking projection provided integrally with the retrofit terminal above, the Conde
A method for assembling a high-voltage resistance pack, comprising winding the other lead wire of the sensor. 3. A variable resistor to which a high voltage is applied,
The circuit board with this variable resistor and the capacitor
A holding part for holding the retrofit terminal is installed in the stored case.
In the method of assembling the high-voltage resistor pack,
The terminal has a convex piece and a locking protrusion protruding in the opposite direction to this convex piece.
The electromotive Prefecture provided to the hold portion of the case end edge, the convex
Forming a groove and a fusion protrusion where the piece fits,
The lead wire locking part is installed at the bottom of the case where the
And connect one lead of the capacitor to the lead
Engage with the engaging part and attach to the terminal protruding from the circuit board.
After attaching the above-mentioned post-installed terminal,
Melt the fusion protrusion and provided integrally with the retrofit terminal
Connect the other lead of the capacitor to the locking projection
How to assemble a high voltage resistance pack characterized by mounting
Law.