JPH0638170U - High voltage plug for power supply - Google Patents

Abstract

(57) [Summary] [Purpose] A high-voltage plug for a power supply that ensures electrical and mechanical contact with a partner device to which power is supplied. [Structure] Cylindrical sleeve 1 of body 10 made of insulating synthetic resin
0c, a Λ-shaped fitting groove 20c is formed on the lower surface of the reverse head of the conductive terminal 20 inserted inside the lower part of the coil-spring type conductive contact 18, and is similar to the Λ-shaped fitting groove 20c. And an electrode contact 22 having a conductive Λ-shaped protrusion 22a having a shape.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a high-voltage plug for a power supply, and more specifically to a reverse head of a conductive terminal inserted inside a lower part of a coil spring type conductive contact provided in a cylindrical sleeve of an insulating synthetic resin body. A Λ-shaped fitting groove is formed on the lower surface of the part, and an electrode contact having a conductive Λ-shaped protrusion having a shape similar to the Λ-shaped fitting groove is provided to prevent contact with a partner device to which power is supplied. High voltage plug for power supply to ensure.

[0002]

[Prior art]

For example, high voltage of tens of thousands of volts is applied to the charge elimination part for transfer and the power supply connection part of the charging part of a copying machine and a laser printer, so that these high voltage plugs must be manufactured robustly. The high-voltage plugs for power sources such as the static elimination part for transfer and the charging part of the laser printer, which have been proposed so far, need to be manufactured in a small size because the space at the mounting location is small. In such a high-voltage plug for power supply, the high-voltage power wire for power supply is connected to the receptacle terminal, and moreover, these members are guided into the cavity of the required mold, and the insulating molten synthetic resin is heated to a high temperature (approx. It was manufactured by injection molding at 300 ° C.) and high pressure (about 70 kg / 1 cm ² ), and then removing the mold after the molten insulating synthetic resin was cured.

[0003]

[Problems to be solved by the device]

 The applicant for this utility model has already proposed a high-voltage plug for a power supply having this shape, but a screw groove is formed around the conductive terminal inserted inside the lower part of the coil-spring type conductive contact. Since it is not formed, the coil / spring type conductive contact and the conductive terminal are not stably connected, and the lower surface of the conductive terminal has a hat shape, so that it is fitted to the conductive terminal. The contact with the power-supplied part to be joined may not be perfect, and the conductive terminal may come off from the coil spring type conductive contact during long-term use, or it may cause a contact failure or a short circuit. It was

[0004]

[Means for Solving Problems]

 In order to solve the above-mentioned deficiencies, the present invention forms a cylindrical sleeve in the longitudinal direction of the front end portion of an inverted L-shaped insulating synthetic resin body, and forms a through hole formed in the longitudinal direction of the rear end portion at a right angle. Insulating synthetic resin main body in which the required high-voltage cord for power supply is built in, and the fitting ring of the conductive crimp terminal connected to the high-voltage cord for power supply is arranged in the innermost part of the cylindrical sleeve; A conductive screw type terminal in which a screw groove is formed around the upper end of which is fitted into the fitting ring of the crimp terminal and the lower portion of which is partially projected below the center of the cylindrical sleeve. A coil spring type conductive contact whose upper part is screwed into the screw groove of the conductive screw type terminal several times; a screw groove around the upper part and a Λ shape on the lower surface of the inverted head A conductive end formed with a fitting groove and screwed inside the lower part of the coil spring type conductive contact. A power supply high voltage plug comprising a.

Further, an electrode is formed by forming a conductive Λ-shaped protrusion having a shape similar to the Λ-shaped fitting groove on the lower surface of the inverted head of the conductive terminal, and freely fitting in the Λ-shaped fitting groove. A high-voltage plug for a power source, which forms a contact, and a high-voltage plug for a power source, which includes a conductive terminal screwed into the lower inside of the coil-spring type conductive contact.

[0006]

[Function of the device]

 Unlike the high-voltage plug for power supply that has already been proposed, the high-voltage plug for power supply having the above-described structure has a coil-spring type conductive structure in which the upper part is screw-connected to the screw groove of the conductive screw type terminal. In the lower part of the sex contactor, a conductive groove having a screw groove around the upper part and a Λ-shaped fitting groove on the lower surface of the inverted head is screwed and integrated. It ensures electrical and mechanical contact with the other device to be charged, and the electrode contact does not separate from the coil spring type conductive contact even after long-term use.

[0007]

【Example】

 An embodiment of the power supply high-voltage plug 10 according to claim 1 will be described with reference to FIGS. A cylindrical sleeve 10c is formed in the longitudinal direction of the front end portion 10a of an inverted L-shaped insulating synthetic resin book body 10 composed of a front end portion 10a and its right-angled rear end portion 10b. The required high-voltage cord 12 for power supply is built in the formed through hole 10d.

The fitting ring 14a of the conductive crimp terminal 14 connected to the power supply high-voltage cord 12 is located at the innermost portion of the cylindrical sleeve 10c, and is projected from the right-angled rear end portion 10b. The high voltage cord 12 is covered with an insulating layer 12 a and extended outside the high voltage plug 10.

The upper end of a conductive screw type terminal 16 having a threaded groove 16 a formed around it is fitted and connected into the fitting ring 14 a of the conductive crimp terminal 14, and the conductive screw type terminal 16 is connected. The lower end of the cylindrical sleeve 10c is partially projected below the center of the cylindrical sleeve 10c. The upper part of the coil / spring type conductive contact 18 is screw-connected to the screw groove 16a of the conductive screw type terminal 16, and the upper part is surrounded by the lower part of the coil / spring type conductive contact 18. A conductive terminal 20 having a threaded groove 20a and a Λ-shaped fitting groove 20c formed on the lower surface of the inverted head 20b is screwed and connected, and the inverted head 20b is arranged near the opening of the cylindrical sleeve 10c. To do.

2 and 3 showing the high-voltage plug 10 for a power source according to claim 1, the Λ-shaped fitting groove 20c formed on the lower surface of the inverted head 20b of the conductive screw type terminal 20 The conductive Λ-shaped projection 22a of the conductive terminal 22 having the conductive Λ-shaped projection 22a having a similar shape is freely fittable in the Λ-shaped fitting groove 20c.

A high voltage plug 10 for a power source according to the present invention has a fitting ring 14a of the conductive crimp terminal 14 to which a rear end of a high voltage cord 12 having an insulating coating 12a is connected in advance, and The mating ring 14a, into which the upper end of the conductive screw type terminal 16 having the screwing groove 16a formed around it is fitted and connected, is introduced into the cavity of a required die (not shown), An insulating molten synthetic resin is injected into the cavity at a high temperature (about 300 ° C.) and a high pressure (about 70 kg / 1 cm ² ) to be molded, and the molten insulating synthetic resin is manufactured by curing and demolding. , The innermost portion of the cylindrical sleeve 10c.

Next, in the lower part of the conductive screw type terminal 14, the conductive terminal 20 having the Λ-shaped fitting groove 20c formed on the lower surface of the reverse head 20b is screwed and connected, and the reverse head is formed. 20b is placed near the opening of the cylindrical sleeve 10c.

[0013]

[Effect of device]

 As described above, in the power supply high voltage plug 10 according to the present invention, the upper portion of the coil spring type conductive contact 18 is provided in the screw groove 16a of the conductive screw type terminal 16. It is firmly fixed because it is screwed and connected multiple times. In addition, since the screw groove 20a around the upper portion of the conductive terminal 20 is screwed into the lower portion of the coil-spring type conductive contact 18, the conductive terminal 20 is firmly fixed, so that wobbling occurs. It does not come off or come off, and contact failure or short circuit does not occur. Further, since the Λ-shaped fitting groove 20c is formed on the lower surface of the inverted head 20b, it is possible to reliably feed power to the Λ-shaped power-supplied portion 22a of the electrode contactor 22 having a shape similar to that of the Λ-shaped fitting groove 20c formed in advance. Therefore, power supply to required electric equipment can be performed without any trouble. In addition, the number of parts when molding the power supply high-voltage plug 10 is reduced, the power supply high-voltage plug 10 can be molded in a small size, the manufacturing process is significantly shortened, and the material can be saved, which is extremely economical. To be the target.

[0014]

[Brief description of drawings]

FIG. 1 is a front view of a high voltage plug for a power supply according to the present invention.

FIG. 2 is a vertical cross-sectional view taken along line 11-11 of FIG. 1 and a schematic partial cross-sectional view of the tip of a mating power-supplied part that is fitted to a high-voltage plug for power supply.

FIG. 3 is an exploded perspective view of the power supply high-voltage cord connected to the conductive crimp terminal, the conductive screw-type terminal, the coil / spring-type conductive contact, and the conductive terminal from the power-supply high-voltage plug of FIG. It is a figure.

FIG. 4 is an enlarged front view of the conductive terminal shown in FIG.

FIG. 5 is a schematic partial cross-sectional view of a conductive terminal and a tip of a mating power-supplied part.

FIG. 6 is a schematic partial cross-sectional view of the tip of a conventional high-voltage plug for a power supply and a counterpart power-supplied part. 10 ... High voltage plug; 10a ... High voltage plug front end; 10b ... Right angle rear end; 10c ... Cylindrical sleeve; 12 ... High voltage cord for power supply; 12a ... Insulation Layer: 14 ... Conductive crimp terminal; 14a ... Fitting ring; 16 ... Conductive screw type terminal; 16a ... Screw groove; 18 ... Coil spring type conductive contact 20 ... Conductive terminal; 20a ... Screw groove; 20b ... Reverse head; 20c ... Λ-shaped fitting groove; 22 ... Conductive terminal; 22a ... Conductive Λ Shaped protrusion.

Claims (2)

[Scope of utility model registration request] 1. A cylindrical sleeve is formed in a longitudinal direction of a front end portion of an inverted L-shaped insulating synthetic resin main body, and a required high-voltage cord for a power supply is incorporated in a through hole formed in a longitudinal direction of a rear end portion thereof at a right angle. And an insulating synthetic resin body in which a fitting ring of a conductive crimp terminal connected to the high-voltage cord for power supply is arranged at the innermost portion of the cylindrical sleeve; and a screw groove is formed around the lower portion,
A conductive screw-type terminal whose upper end is fitted in the fitting ring of the crimp terminal and whose lower portion is partially projected below the center of the cylindrical sleeve; A coil / spring type conductive contact whose upper part is screwed and connected to the screw groove; a screw groove on the periphery of the upper part, and a Λ-shaped fitting groove on the lower surface of the inverted head are formed. -A high-voltage plug for a power supply, which is composed of a spring-type conductive contact and a conductive terminal screwed inside the lower part. 2. A conductive Λ-shaped protrusion having a shape similar to that of the Λ-shaped fitting groove on the lower surface of the inverted head of the conductive terminal is formed, and is freely fittable in the Λ-shaped fitting groove. The high voltage plug for a power supply according to claim 1, which is formed as an electrode contact.