CN202872697U

CN202872697U - Dual-chip starter

Info

Publication number: CN202872697U
Application number: CN 201220402855
Authority: CN
Inventors: 黄智航; 骆焰鹏; 葛智华; 施庆生; 黄琼贤
Original assignee: Guangzhou Senbao Electrical Appliances Co Ltd
Current assignee: Guangzhou Senbao Electrical Appliances Co Ltd
Priority date: 2012-08-15
Filing date: 2012-08-15
Publication date: 2013-04-10
Anticipated expiration: 2022-08-15

Abstract

The utility model discloses a dual-chip starter, which comprises a PTC chip, a box body, and a box cover matched with the box body, wherein the box body is provided with three corresponding external ports for planting combined terminals and a terminal; the PTC chip is connected; a silicon controlled rectifier is connected with the PTC chip; a small PTC chip is parallelly connected with the PTC chip; and two ends of the small PTC chip which is originally used for controlling a silicon-controlled switch are fixedly connected with two pins respectively. The pins are directly used for welding and solid encapsulation is carried out in the limit clamping grooves of the box body by using resin, the original electrode plate crimping way is replaced, and the shortcomings that the electrode plates are poor in contact as the chip is small can be avoided.

Description

A kind of twin-core starter

Technical field

The utility model relates to a kind of starter, particularly a kind of twin-core starter that prevents electrode loose contact.

Background technology

The twin-core starter is a kind of starting device for electronic refrigerant compressor, is the motor in the compressor such as extensive use starting refrigerator.So-called " twin-core " refers to the PTC chip in the starter and another the little PCT chip that is used for the control reverse-blocking tetrode thyristor.When motor starting, will add to motor from the electric power of power supply, a triggering signal is added to the control utmost point of reverse-blocking tetrode thyristor by the little PTC chip of control reverse-blocking tetrode thyristor, so that being in electric current, reverse-blocking tetrode thyristor passes through state, and allow the motor starting electric current through starting PTC chip, because little PTC chip itself produces heat, its resistance is increased, utilize this characteristic to reduce electric current so that reverse-blocking tetrode thyristor disconnects.Existing technology is that the PTC chip is sandwiched between two elastic plate electrodes, this battery lead plate crimping mode is applicable to one of them larger PTC chip, then inapplicable for another little PCT chip that is used for the control reverse-blocking tetrode thyristor, because this chip is less, causes easily the battery lead plate loose contact, even stable connection, in long-term work, also shake easily and come off, in case loose contact or come off causes uncontrollable reverse-blocking tetrode thyristor, so that motor can't turn round.

Summary of the invention

The purpose of this utility model is to provide a kind of twin-core starter that prevents electrode loose contact, in the situation that does not change other position of components, avoids the loose contact that comes off of little PTC chip.

A kind of twin-core starter described in the utility model, the lid that comprises PTC chip, box body, matches with box body, 3 corresponding external-connected ports are arranged on the box body, plant respectively terminals of a unit block and terminal, the PTC chip is coupled, and controllable silicon links to each other with the PTC chip, and little PTC chip is in parallel with the PTC chip, little PCT chip two ends connect two pins, and admittedly are enclosed in the spacing draw-in groove of box body.

The twin-core starter of anti-battery lead plate loose contact described in the utility model, it fixes respectively two pins out at the former electrode two ends that are useful on the little PCT chip of control reverse-blocking tetrode thyristor, directly utilize the pin welding, the recycling resin is enclosed in the spacing draw-in groove of box body admittedly, replaced original battery lead plate crimping mode, avoided because the drawback of the less battery lead plate loose contact that causes of chip.

Description of drawings

Fig. 1 is a kind of explosive view of twin-core starter.

Fig. 2 is the box body cutaway view after Fig. 1 assembles.

Fig. 3 is the end view of twin-core starter box body.

Embodiment

Such as Fig. 1, Fig. 2, shown in Figure 3, a kind of twin-core starter described in the utility model, consisted of by box body 6 and lid 5, the little PTC chip 2 that in this box body, has held PTC chip 1, controllable silicon 3 and control reverse-blocking tetrode thyristor, also be provided with terminal 4 and terminals of a unit block 7, one end of these two terminals is in box body 6, and the other end is projected into outside the box body 6, connects usefulness.Be provided with spacing draw-in groove in the box body 6, be used for providing the space of separation to hold PTC chip, little PTC chip, controllable silicon 3, terminal 4 and terminals of a unit block 7.Little PTC chip 2 two ends are fixing pin 21 respectively, and utilizes resin admittedly to be enclosed in the spacing draw-in groove of box body 6.

Claims

1. twin-core starter, the lid (1) that comprises PTC chip (1), box body (6), matches with box body, 3 corresponding external-connected ports are arranged on the box body, plant respectively terminals of a unit block (7) and terminal (4), PTC chip (1) is coupled, and controllable silicon (3) links to each other with PTC chip (1), and little PTC chip (2) is in parallel with PTC chip (1), it is characterized in that: little PCT chip (2) two ends connect two pins (21), and admittedly are enclosed in the spacing draw-in groove of box body (6).

2. a kind of twin-core starter according to claim 1 is characterized in that: described solid envelope is sealed admittedly for resin.