CN209930777U

CN209930777U - Solid-state relay with reset current-limiting protection

Info

Publication number: CN209930777U
Application number: CN201920084463.9U
Authority: CN
Inventors: 甘耀欢
Original assignee: Mibo (xiamen) Intelligent Technology Co Ltd
Current assignee: Mibo (xiamen) Intelligent Technology Co Ltd
Priority date: 2019-01-18
Filing date: 2019-01-18
Publication date: 2020-01-10
Anticipated expiration: 2029-01-18

Abstract

The utility model discloses a solid-state relay with reset current-limiting protection, which comprises a fixed seat, wherein a shell is welded at the top of the fixed seat, a power input junction box is fixedly installed on the left side wall of the shell through a bolt, a power output junction box is fixedly installed on the right side wall of the shell through a bolt, an upper cover is fixedly installed at the top of the shell through a bolt, a concave hole is opened at the top of the upper cover, a mesh cover is fixedly installed at the top of the upper cover through a bolt, a motor is fixedly installed at the top of an inner cavity of the upper cover through a bolt, fan blades are fixedly installed at the power output end of the motor, a PCB is fixedly installed at the bottom of the inner cavity of the shell through a bolt, a fast fuse, a current-limiting circuit breaker and an optical coupler are sequentially welded at the top of the PCB from left to right, the comprehensive effect of preventing corrosion.

Description

Solid-state relay with reset current-limiting protection

Technical Field

The utility model relates to a relay technical field specifically is a current-limiting protection formula solid state relay resets in area.

Background

A Solid State Relay (SSR) is a contactless switch composed of a microelectronic circuit, a discrete electronic device, and a power electronic power device. The isolation of the control end and the load end is realized by the isolation device. The input end of the solid-state relay uses a tiny control signal to directly drive a heavy-current load. The solid-state relay is a novel contactless switch device which is composed of solid-state electronic elements, and can achieve the purpose of connecting and disconnecting a circuit without contact and spark by utilizing the switching characteristics of the electronic elements (such as switching triodes, bidirectional thyristors and other semiconductor devices), so the solid-state relay is also called as a contactless switch. The solid-state relay is a four-terminal active device, two terminals of which are input control terminals, and the other two terminals of which are output controlled terminals, has the functions of amplification driving and isolation, is very suitable for driving a high-power switch type actuating mechanism, has higher reliability than an electromagnetic relay, is contactless, has long service life, high speed and small interference to the outside, and is widely applied.

The terminal box of relay among the prior art receives external corruption easily, and the inside high temperature of relay simultaneously, radiating effect is relatively poor, leads to the effect of relay to become invalid then, consequently needs urgent need to research and develop a kind of area and resets current-limiting protection formula solid state relay.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a current-limiting protection formula solid state relay resets in area to the current-limiting protection formula solid state relay terminal box that resets that provides in solving above-mentioned background art receives external corruption easily, and the inside high temperature of relay simultaneously, the relatively poor scheduling characteristic's of radiating effect problem.

In order to achieve the above object, the utility model provides a following technical scheme: a solid-state relay with reset current-limiting protection comprises a fixed seat, wherein a shell is welded at the top of the fixed seat, a power input junction box is installed on the left side wall of the shell through bolt fixing, a power output junction box is installed on the right side wall of the shell through bolt fixing, an upper cover is installed at the top of the shell through bolt fixing, a concave hole is formed in the top of the upper cover, a mesh enclosure is installed at the top of the upper cover through bolt fixing, a motor is installed at the top of an inner cavity of the upper cover through bolt fixing, fan blades are fixedly installed at the power output end of the motor, a PCB is installed at the bottom of the inner cavity of the shell through bolt fixing, a fast fuse, a current-limiting circuit breaker and an optical coupler are sequentially welded at the top of the PCB from left to right, limit blocks are fixedly installed at the, the radiator is characterized in that bolt holes are formed in four corners of the radiator, radiating holes are formed in the middle of the radiator, and radiating blades are evenly distributed in the middle of the radiator.

Preferably, transparent protective covers are clamped on the power input junction box and the power output junction box.

Preferably, the limiting block is cylindrical, and threaded rods are welded at two ends of the limiting block.

Preferably, the left side and the right side of the fixing seat are both provided with mounting holes.

Preferably, the radiator is an aluminum alloy radiating plate.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a take inner wall of current-limiting protection formula solid state relay that resets to have set up heat abstractor, can effectually go out the quick diffusion of the temperature of inside, guarantee the normal operation of relay, secondly the joint has the protective cover on the terminal box, can effectually play anticorrosive effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the heat dissipation device of the present invention;

fig. 3 is a schematic structural diagram of the heat sink of the present invention.

In the figure: the device comprises a fixing seat 1, a shell 2, a PCB 3, a fast fuse 4, a current limiting breaker 5, an optical coupler 6, a power input junction box 7, a power output junction box 8, a limiting block 9, a heat radiator 10, an upper cover 11, a motor 12, fan blades 13, a mesh enclosure 14, heat dissipation holes 15, bolt holes 16 and heat dissipation blades 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: the utility model provides a solid-state relay of current-limiting protection formula that resets for improve radiating effect and effectual protection terminal box, please refer to fig. 1, including fixing base 1, the left and right sides of fixing base 1 all opens the mounting hole, utilize bolt and mounting hole to peg graft, realize with the installation of wall body, the top welding of fixing base 1 has casing 2, the left side wall of casing 2 has power input terminal box 7 through bolt fixed mounting, the right side wall of casing 2 has power output terminal box 8 through bolt fixed mounting, the top of casing 2 has upper cover 11 through bolt fixed mounting, power input terminal box 7 and power output terminal box 8 all joint have transparent protective cover, utilize the protective box to realize covering power input terminal box 7 and power output terminal box 8, prevent the entering of dust etc., the inner chamber bottom of casing 2 has PCB board 3 through bolt fixed mounting, the top of PCB board 3 has welded fast acting fuse 4 from left to right in proper order, The current-limiting circuit breaker 5 and the optical coupler 6, the left and right sides of the inner cavity of the housing 2 are fixedly provided with limit blocks 9, the limit blocks 9 are cylindrical, threaded rods are welded at both ends of the limit blocks 9, the connection with the PCB 3 and the limit blocks 9 is realized by utilizing the threaded rods, a certain distance is kept between the PCB 3 and the limit blocks 9 by utilizing the limit blocks 9, the top of the limit blocks 9 is fixedly provided with a radiator 10 by bolts, please refer to fig. 2, the top of the upper cover 11 is provided with concave holes, the top of the upper cover 11 is fixedly provided with a mesh enclosure 14 by bolts, the mesh enclosure 14 is used for preventing objects from falling into the inner part of the upper cover 11 so as to avoid damaging the fan blades 13, the top of the inner cavity of the upper cover 11 is fixedly provided with a motor 12 by bolts, the power output end of the motor 12 is fixedly provided with, therefore, the heat dissipation effect is realized, referring to fig. 3, the four corners of the heat sink 10 are all provided with bolt holes 16, the middle of the heat sink 10 is provided with heat dissipation holes 15, the middle of the heat sink 10 is uniformly distributed with heat dissipation blades 17, the temperature in the inner cavity of the shell 2 is rapidly and uniformly diffused by the heat dissipation blades 17, the heat sink 10 is an aluminum alloy heat dissipation plate, and the aluminum alloy heat dissipation plate has light weight and good heat dissipation effect.

In specific use, as needs the utility model discloses at first utilize fixing base 1 to install with the wall body at the in-process that uses, then all connect the cable with power input terminal box 7 and power output terminal box 8, the inner chamber of solid relay during operation casing 2 can produce the high temperature, utilize radiator 10 to carry out the heat quick and transmit to the top, simultaneously through motor 12's rotation, drive flabellum 13 rotation, utilize flabellum 13 to blow the hot gas flow to the outside to reach radiating purpose.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a current-limiting protection formula solid state relay resets in area, includes fixing base (1), its characterized in that: the welding of the top of fixing base (1) has casing (2), the left side wall of casing (2) has power input terminal box (7) through bolt fixed mounting, the right side wall of casing (2) has power output terminal box (8) through bolt fixed mounting, the top of casing (2) has upper cover (11) through bolt fixed mounting, open at the top of upper cover (11) has the shrinkage pool, there is screen panel (14) at the top of upper cover (11) through bolt fixed mounting, there is motor (12) at the inner chamber top of upper cover (11) through bolt fixed mounting, the power take off fixed mounting of motor (12) has flabellum (13), there is PCB board (3) at the inner chamber bottom of casing (2) through bolt fixed mounting, the top of PCB board (3) has fast acting fuse (4), current limiting circuit breaker (5) and optical coupler (6) from left to right in proper order, the inner chamber left and right sides fixed mounting of casing (2) has stopper (9), there is radiator (10) at the top of stopper (9) through bolt fixed mounting, bolt hole (16) have all been opened at four turnings of radiator (10), open at the middle part of radiator (10) has louvre (15), the even radiating fin (17) of having arranged in middle part of radiator (10).

2. The solid-state relay with the reset current-limiting protection function of claim 1, wherein: transparent protective covers are clamped on the power input junction box (7) and the power output junction box (8).

3. The solid-state relay with the reset current-limiting protection function of claim 1, wherein: the limiting block (9) is cylindrical, and threaded rods are welded at two ends of the limiting block (9).

4. The solid-state relay with the reset current-limiting protection function of claim 1, wherein: the left side and the right side of the fixed seat (1) are both provided with mounting holes.

5. The solid-state relay with the reset current-limiting protection function of claim 1, wherein: the radiator (10) is an aluminum alloy radiating plate.