CN210578479U

CN210578479U - Intermediate solid state relay

Info

Publication number: CN210578479U
Application number: CN201922029325.3U
Authority: CN
Inventors: 曾凤刚; 戴昌旗
Original assignee: Yueqing Ruishi Electric Co Ltd
Current assignee: Yueqing Ruishi Electric Co Ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-05-19
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to an intermediate solid-state relay, which comprises a shell, a relay body and a relay cover, wherein the shell is provided with an accommodating space, and one side of the shell is opened to form an opening; the base is connected with the shell, and the opening of the shell is covered by the base; the PCB is arranged in the accommodating space and comprises a constant pressure plate, a control plate, a normally closed driving plate and a normally open driving plate, and the constant pressure plate, the control plate, the normally closed driving plate and the normally open driving plate are welded with each other to form a mouth shape; and the plurality of contact pins penetrate through the base, one ends of the contact pins form external wiring ends, the other ends of the contact pins are internal wiring ends, and the internal wiring ends are electrically connected with the PCB. Utilize four circuit boards to be mouthful style of calligraphy and distribute for the basal area of relay reduces, thereby reduces the volume of whole relay, will normally open in addition and normally close mutual independence sets up, can avoid the mutual interference between the two, improves the reliability of relay.

Description

Intermediate solid state relay

Technical Field

The utility model relates to an intermediate solid state relay.

Background

A relay is a switch-like part that controls higher voltages and currents with lower dc voltages. The relays have been manufactured by electromagnetic principles. That is, a coil is wound on an iron core and is energized to become an electromagnet, thereby generating a magnetic field, and an iron piece movably disposed near the iron core on which the coil is wound is moved toward the magnetic field, thereby generating a switching action. A relay manufactured in such a manner as described above, that is, an electromagnet manufactured by winding a coil around a core and operated, is called a mechanical relay.

Because the action of the intermediate relay in the prior art is mainly realized by a mechanical structure, power loss exists in the use process, noise is generated when the coil runs, and the noise is larger when the armature is polluted. When the load current is large, the contact is easy to burn so that the contact cannot be released in time. When the main contact is released with load, arc ignition is easily generated, and the service life of the intermediate relay with a mechanical structure is short.

In the prior art, with the continuous development of electronic technology, especially silicon controlled rectifiers, products that utilize electronic circuits to achieve the function of opening and closing contacts in a similar intermediate relay have appeared in the market, wherein the mature products include solid-state relays, contactor without contacts, and the like. The basic principle is as follows: the aim of connecting and disconnecting the circuit without contact and spark is achieved by using the switching characteristics of electronic elements (such as switching transistors, bidirectional thyristors and other semiconductor devices), thereby achieving the effect similar to an electronic switch.

However, the products of the "electronic switch" class in the prior art generally have the following defects: the existing products of the electronic switch type need a plurality of circuit boards because of bearing larger passing current, and the volume of the products of the electronic switch type is larger.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model provides an intermediate solid state relay.

In order to achieve the above purpose, the utility model provides a following technical scheme: an intermediate solid state relay comprising

The shell is provided with an accommodating space, and one side of the shell is opened to form an opening;

the base is connected with the shell, and the opening of the shell is covered by the base;

the PCB is arranged in the accommodating space and comprises a constant pressure plate, a control plate, a normally closed driving plate and a normally open driving plate, the constant pressure plate, the control plate, the normally closed driving plate and the normally open driving plate are welded with each other to form a shape of a mouth, the control plate is arranged on the base, the bottom ends of the normally closed driving plate and the normally open driving plate are symmetrical and are perpendicular to the control plate, and the top ends of the normally closed driving plate and the normally open driving plate are electrically connected with the constant pressure plate;

and the plurality of contact pins penetrate through the base, one ends of the contact pins form external wiring ends, the other ends of the contact pins are internal wiring ends, and the internal wiring ends are electrically connected with the PCB.

The control board is provided with a plurality of slots matched with the pins, and the inner connecting ends of the pins penetrate through the slots.

And the bottoms of the normally closed driving plate and the normally open driving plate are provided with notch grooves matched with the ends of the internal connecting wires.

Conductive parts are arranged on the front side and the rear side of the notch groove, and the inner wiring end is inserted into the notch groove and is electrically connected with the conductive parts through welding.

One end of the control panel is provided with a limiting groove, and a limiting part matched with the limiting groove is formed on the base.

The limiting piece is L-shaped.

The other end of control panel is equipped with the cooperation groove, the bottom downwardly extending of normally closed drive plate and normally open drive plate forms the fitting piece with cooperation groove looks adaptation.

The both sides of permanent clamp plate are equipped with a plurality of fixed slots, the top of normally closed drive plate and normally open drive plate upwards extends the mounting that forms and fixed slot looks adaptation.

And a plurality of welding pads for electric connection are arranged at the joint of the constant pressure plate, the normally closed driving plate and the normally open driving plate.

The shell is matched with the base in a clamping mode.

The utility model has the advantages that: the printed circuit board has a switching function, so that operation noise is not generated at all, and the noise performance of a product adopting the intermediate solid-state relay can be greatly improved. And utilize four circuit boards to be the mouth style of calligraphy and distribute for the basal area of relay reduces, thereby reduces the volume of whole relay, will normally open in addition and normally closed mutual independence sets up, can avoid the mutual interference between the two, improves the reliability of relay.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is a schematic structural diagram of the base of the present invention.

Fig. 4 is a schematic structural diagram of the control panel of the present invention.

Fig. 5 is a schematic structural diagram of the normally closed driving board or the normally open driving board of the present invention.

Fig. 6 is a schematic structural view of the constant pressure plate of the present invention.

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 efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model provides an intermediate solid-state relay, it includes

The device comprises a shell 1, a first fixing piece and a second fixing piece, wherein the shell is provided with an accommodating space, and one side of the shell is opened to form an opening;

the base 2 is connected with the shell, and the base covers the opening of the shell;

the PCB is arranged in the accommodating space and comprises a constant pressure plate 5, a control plate 7, a normally closed driving plate 4 and a normally open driving plate 6, the constant pressure plate 5, the control plate 7, the normally closed driving plate 4 and the normally open driving plate 6 are welded with each other to form a shape of a mouth, the control plate is arranged on the base, the bottom ends of the normally closed driving plate and the normally open driving plate are symmetrical and are perpendicular to the control plate, and the top ends of the normally closed driving plate and the normally open driving plate are electrically connected with the constant pressure plate;

and a plurality of pins 3 arranged through the base, wherein one end of each pin forms an external terminal, and the other end of each pin is an internal terminal 31 electrically connected with the PCB.

Set up in the arbitrary one end of base and prevent slow-witted structure, one side that the shell corresponds simultaneously and this prevent slow-witted structure looks adaptation, the wrong problem of direction that appears when avoiding the assembly, shell and base joint cooperation in addition, when breaking down, can comparatively convenient dismantlement maintain.

The control board is arranged on the base in parallel, a plurality of slots 72 matched with the contact pins are formed in the control board, the inner connecting ends of the contact pins penetrate through the slots, a limiting groove 71 is formed in one end of the control board, a limiting part 21 matched with the limiting groove is formed in the base, and the limiting part is L-shaped. Utilize mutually supporting between locating part and the spacing groove, realize the ascending displacement restriction of control panel one side, in addition the other end of control panel is equipped with cooperation groove 73, the bottom downwardly extending of normally closed drive plate and normally open drive plate forms the fitting piece 8 with cooperation groove looks adaptation, utilizes the cooperation of fitting piece and cooperation groove, realizes the ascending displacement of another side of control panel, and a plurality of contact pins also further assurance the position between control panel and the base.

The bottom of the normally closed driving plate and the bottom of the normally open driving plate are provided with notch grooves matched with the inner wiring ends, namely the normally closed driving plate and the normally open driving plate are matched with the inner wiring ends, the control plate is fixedly arranged on the base, in addition, the front side and the rear side of each notch groove are provided with conductive parts, the inner wiring ends are inserted into the notch grooves and are electrically connected with the conductive parts through welding, the electric connection between the three PCB boards and the contact pins is realized, and meanwhile, the fixing effect is also realized.

And a plurality of fixing grooves 51 are formed in two sides of the constant pressure plate, and the top ends of the normally closed driving plate and the normally open driving plate extend upwards to form fixing pieces 9 matched with the fixing grooves. And a plurality of welding pads for electric connection are arranged at the joint of the constant pressure plate, the normally closed driving plate and the normally open driving plate. Through mutually supporting of fixed slot and fixed key, guaranteed that four PCB boards are mouthful style of calligraphy and set up, the inner wall setting of laminating the shell completely, very big utilization the inner space of shell, simultaneously, utilize the pad welding, realized the electricity between each PCB board and connected, also played fixed effect simultaneously.

The constant voltage board adopts two triodes, realizes constant voltage control through the triode, and its circuit is simple, and area occupied is less, can also install the emitting diode who is used for work instruction.

The control panel realizes relay switching control through the work of switching normally closed drive plate and normally open drive plate.

The normally closed driving plate is isolated through the optical coupler, and the triode is locked to trigger the rectification silicon controlled rectifier, so that the normally closed state of the silicon controlled rectifier is switched.

The normally open drive plate realizes isolation through the optical coupler, and the triode realizes triggering the rectification silicon controlled rectifier, reaches the switching of the normally open state of silicon controlled rectifier.

The utility model discloses a PCB board has the switch function, consequently can not produce the running noise completely to can improve the noise performance of the product that adopts middle solid state relay by a wide margin.

The PCB board, the pin, and the base provided inside the housing are assembled in the housing in a state of being formed as one assembly, so that the workability of the assembly operation is good.

The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. An intermediate solid state relay, characterized by: which comprises

2. The intermediate solid-state relay of claim 1, wherein: the control board is provided with a plurality of slots matched with the pins, and the inner connecting ends of the pins penetrate through the slots.

3. The intermediate solid-state relay of claim 2, wherein: and the bottoms of the normally closed driving plate and the normally open driving plate are provided with notch grooves matched with the ends of the internal connecting wires.

4. An intermediate solid-state relay according to claim 3, characterized in that: conductive parts are arranged on the front side and the rear side of the notch groove, and the inner wiring end is inserted into the notch groove and is electrically connected with the conductive parts through welding.

5. The intermediate solid-state relay of claim 1, wherein: one end of the control panel is provided with a limiting groove, and a limiting part matched with the limiting groove is formed on the base.

6. The intermediate solid-state relay of claim 5, wherein: the limiting piece is L-shaped.

7. An intermediate solid-state relay according to claim 1, 5 or 6, characterized in that: the other end of control panel is equipped with the cooperation groove, the bottom downwardly extending of normally closed drive plate and normally open drive plate forms the fitting piece with cooperation groove looks adaptation.

8. The intermediate solid-state relay of claim 1, wherein: the both sides of permanent clamp plate are equipped with a plurality of fixed slots, the top of normally closed drive plate and normally open drive plate upwards extends the mounting that forms and fixed slot looks adaptation.

9. The intermediate solid-state relay of claim 8, wherein: and a plurality of welding pads for electric connection are arranged at the joint of the constant pressure plate, the normally closed driving plate and the normally open driving plate.

10. The intermediate solid-state relay of claim 1, wherein: the shell is matched with the base in a clamping mode.