JPH08321413A - High voltage resistor pack and its manufacture - Google Patents

Abstract

PURPOSE: To raise fixing strength of a lead wire and to facilitate assembly operation. CONSTITUTION: On an end surface of a case 1 which has a variable resistor to which a high voltage is applied and houses a circuit substrate provided with the variable resistor, a holder part 1b holding a post-attaching terminal 10 is provided. The post-attaching terminal 10 is installed to the holder part 1b, and further the holder part 1b is melted for fixing the post-attaching terminal 10. A protrusion piece 12 protruding from the post-attaching terminal 10 and an engagement protrusion protruding in the opposite direction of the protrusion piece 12 are provided, and the protrusion piece 12 is engaged with the edge of the case 1, and then a lead wire 7 of an electronic part provided to the high voltage resistor pack is wound around the engagement protrusion.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a CRT (Cathode).
The present invention relates to a high-voltage resistor pack in which a variable resistor for adjusting a focus voltage of a Ray Tube (cathode ray tube) is housed in an insulating case, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, there is a high-voltage resistor pack provided with a variable resistor for adjusting a focus voltage of a CRT, a so-called focus pack, in which a capacitor is also housed in a case. Lead wires may be attached to the post-installed terminals. The joining method was to wind the lead wire extended from the capacitor around the post-attached terminal and solder it.

[0003]

In the case of the above-mentioned conventional technique, even if the lead wire extending from the capacitor is wound around the rear 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 drawback that the lead wire is easily moved in the longitudinal direction of the terminal due to an external force and the attachment strength is weak. Moreover, the number of manufacturing steps is also high.

The present invention has been made in view of the above prior art, and an object of the present invention is to provide a high voltage resistance pack having a high lead wire attachment strength and easy assembling work, and a manufacturing method thereof.

[0005]

According to the present invention, there is provided a holding portion which has a variable resistor to which a high voltage is applied, and which holds an after-installed terminal on an end face of a case in which a circuit board provided with the variable resistor is accommodated. In the high-voltage resistance pack in which the post-installed terminal is attached to the holding part and the post-installed terminal is fixed by melting the holding part, the projecting piece protruding from the post-installing terminal and the opposite direction to the projecting piece A high-voltage resistance pack formed by providing a locking projection protruding to the end of the case, locking the projecting piece on the edge of the case, and winding the lead wire of the electronic component provided on the high-voltage resistance pack around the locking projection. Is.

Further, according to the present invention, a high voltage is provided which has a variable resistor to which a high voltage is applied, and a holding portion for holding a post-installed terminal is provided on an end face of a case in which a circuit board having the variable resistor is accommodated. In a method of manufacturing a resistance pack, the post-installed terminal is attached to the holding part to melt the holding part, and a locking projection integrally provided with the post-installed terminal is provided with an electronic component provided on the high-voltage resistance pack. It is a method of manufacturing a high voltage resistance pack around which lead wires are wound.

The high-voltage resistance pack of the present invention is designed to hold the post-installed terminal in the holding portion at the edge of the case, and to wind the lead wire around the locking projection of the post-installed terminal. Even if an external force is applied, the winding portion of the lead wire hits the engaging portion and the lead wire does not move or come off.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show an embodiment of the present invention. The high voltage resistor pack of this embodiment is a so-called focus pack for adjusting a focus voltage and a screen voltage of a CRT.
The capacitor 2 and the resistor substrate 15 are housed in the. The resistor substrate 15 has a ground terminal 3, a capacitor input terminal 4, a focus and screen voltage output terminal 5.
Is protruding. Then, in the resistor substrate 15, the side from which the terminals 3 to 5 connected to the coil such as the flyback transformer is projected is the opening side of the case 1 and the case 1
Is housed inside. With the resistor substrate 1 housed, epoxy resin is poured into the opening of the case 1 to form the insulating resin layer 6 that covers the resistor substrate 15 and seals the inside of the case 1. ing. This secures the internal insulation, but the resin does not flow inside the resistor substrate 15, and the resistor on the surface of the resistor substrate 15 is
A brush described later can be slidably contacted.

Then, one lead wire 7 of the capacitor 2 is locked to a lead wire locking portion 8 provided at the bottom of the case 1 and inserted into a through hole (not shown) at the tip of the terminal 4 to be soldered. Has been done. The other lead wire 7 is wound around and soldered to the locking projection 11 of the post-installed terminal 10 which is attached by being sandwiched between the holding portions 1b formed on the edge 1a of the case 1.

As shown in FIGS. 4 to 6, the retrofit terminal 10 has a locking projection 11 for the lead wire 7 formed at the base end thereof. The locking projection 11 is formed in a T-shape, and the T-shaped head is an engaging portion 11a with which the lead wire 7 is wound and engaged so as not to come off. Further, the post-installed terminal 10 is provided with a pair of convex pieces 12 in a direction opposite to the protruding direction of the locking projection 11, and the side surface of the convex piece 12 has
A slight bulge 13 is formed. Further, a through hole 13 is formed in the central portion of the retrofit terminal 10.

The post-installed terminal 10 has a groove portion 1 which is a locking portion formed on the edge 1a of the case 1 shown in FIG.
The protruding piece 12 is fitted into the c, the melting protrusion 1d protruding from the case edge 1a is inserted into the through hole 13, and both sides are held by the holding portion 1.
held by b. Then, the holding portion 1b and the melting protrusion 1d are melted, and as shown in FIG.
Surely holds.

Further, the case 1 is provided with adjusting knobs 9 for adjusting the focus voltage and the screen voltage, and the adjusting knob 9 is provided with a brush 16 slidably contacting a resistor on the resistor substrate 15 to adjust the focus and the screen voltage. It is possible to adjust.

In the high voltage resistance pack of this embodiment, the lead wire 7 of the capacitor 2 is attached to the locking projection 1 of the rear terminal 10.
Since it is wrapped around 1 and soldered, the locking protrusion 11
The winding portion of the lead wire 7 does not engage with the engaging portion 11a of the above, and the lead wire 7 does not come off or move from the locking projection 11. Moreover, this winding operation is easy because the locking projections 11 are provided at the opening of the case 1 so as to project outward.
In addition, the retrofit terminal 10 is provided with a convex piece 12, and the convex piece 12
Since it is fitted into the groove portion 1c of the case edge 1a, locked and held and fixed, it is securely fixed in addition to being held by the holding portion 1b. Further, since the bulging portion 13 is formed on the convex piece 12, it is securely held when fitted into the groove portion 1c.

The high-voltage resistor pack according to the present invention is only required to have lead wire winding locking projections formed on the retrofit terminal, and the locking projections may also have an engaging portion. The locking means does not matter. Further, the retrofit terminal may be any terminal to which a lead wire of a capacitor or other electronic component is connected, and the type of electronic component and the method of connecting the lead wire are not limited. Well, it can be used for high voltage packs other than focus packs.

[0015]

According to the high voltage resistance pack of the present invention, the post-fixed terminal fixed to the edge of the case is provided with the locking projection, and the lead wire is wound around the engaging portion of the locking projection. The winding of the wire is easy and reliable, and the attachment strength can be high. Further, the mounting strength of the retrofit terminal to the case is very high, the work of winding the lead wire is easy, and a highly reliable lead wire and terminal mounting structure can be obtained.

[Brief description of drawings]

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

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

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

FIG. 4 is a plan view of a post-installed terminal of this embodiment.

FIG. 5 is a front view of a rear terminal of this embodiment.

FIG. 6 is a right side view of the post-installed terminal of this embodiment.

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

FIG. 8 is a plan view showing a usage state of the post-installed terminal of this embodiment.

[Explanation of symbols]

 1 Case 1a Case edge 1b Holding part 7 Lead wire 10 Retrofit terminal 11 Locking protrusion 11a Engaging part 11c Groove part (locking part) 12 Convex piece

Claims (2)

[Claims] 1. A variable resistor to which a high voltage is applied,
A holding portion for holding the post-installed terminal is provided on the end surface of the case in which the circuit board provided with the variable resistor is housed, and the post-installed terminal is attached to the holding portion and the post-installed terminal is melted to fix the post-installed terminal. In the fixed high-voltage resistance pack, a protruding piece protruding from the retrofit terminal and a locking protrusion protruding in a direction opposite to the protruding piece are provided, and the protruding piece is locked to the edge of the case. A high voltage resistance pack comprising a lead wire of an electronic component provided on the voltage resistance pack, wound around the locking projection. 2. A variable resistor to which a high voltage is applied,
In a method of manufacturing a high voltage resistance pack, wherein a holding portion for holding a post-installed terminal is provided on an end surface of a case accommodating a circuit board provided with the variable resistor, the post-installed terminal is attached to the holding portion, and the holding portion is attached. And a lead wire of an electronic component provided in the high voltage resistance pack is wound around a locking protrusion integrally provided with the post-installed terminal.