CN209546156U - A kind of PCB layout structure of solid-state contactless relaying - Google Patents

Abstract

The utility model discloses a solid non-contact relay PCB layout structure, which comprises a circuit board body, an upper casing and a lower casing. A box-shaped body, a baffle is arranged in the lower case, and the baffle is vertically fixed to the inner cavity of the lower case, which divides the inner cavity of the lower case into a first circuit board area and a second circuit board area; the circuit board body includes a circuit board 1. Circuit board 2 and circuit board 3, circuit board 1 is set parallel to the upper casing, and there are a number of clamping grooves on it, and the circuit board 2 and circuit board 3 are vertically arranged on both sides of the end surface close to the lower casing; the circuit board The second is arranged in the area of the first circuit board, and the edge near the bottom end surface of the first circuit board protrudes from the first clamping block, and the first clamping block passes through the clamping slot and fixedly connects the second circuit board to the first circuit board. The circuit board body of the utility model is formed by cooperating and splicing between the clamping block and the clamping groove, and is not connected by a connector, which is convenient and practical.

Description

A PCB layout structure of solid-state non-contact relay

technical field

The utility model relates to the technical field of bridge cranes, in particular to a solid non-contact relay PCB layout structure.

Background technique

With the continuous development and progress of the automation of the overhead crane (overhead crane), a large number of relays are used to complete simple and repetitive work. The traditional relay is composed of a fixed iron core, a moving iron core, a spring, a moving contact, It consists of static contacts, coils, terminals and shells. When the coil is energized, the moving iron core acts to attract and close under the action of electromagnetic force, driving the moving contact to move, separating the normally closed contacts and closing the normally open contacts; when the coil is powered off, the moving iron core drives the moving contacts under the action of the spring reset. However, it is often due to wear and tear of the dynamic and static contacts that they cannot be turned on after being pulled in, or the static and dynamic contacts are stuck and cannot be separated, and the existing solid-state relays only have normally open contacts and no normally closed contacts, which cannot completely replace the central control part of the crane. The relay is large in size and cannot be replaced directly. It needs a major modification of the central control part. Therefore, a solid-state non-contact relay PCB layout structure is needed to replace the traditional solid-state non-contact relay.

Utility model content

The technical problem to be solved by the utility model is to overcome the disadvantages of the prior art and provide a PCB layout structure of solid-state non-contact relay.

In order to solve the above technical problems, the utility model provides the following technical solutions:

The utility model provides a solid non-contact relay PCB layout structure, including a circuit board body, an upper casing and a lower casing, the lower casing is a semi-closed structure with a closed bottom and an opening at the top facing the upper casing A box-shaped body, a baffle is arranged in the lower case, and the baffle is vertically fixed to the inner cavity of the lower case, which divides the inner cavity of the lower case into a first circuit board area and a second circuit board area; the circuit board body includes Circuit board 1, circuit board 2 and circuit board 3, circuit board 1 is arranged parallel to the upper casing, and there are a number of clamping slots on it, and circuit board 2 and circuit board 3 are vertically arranged on both sides of the end surface close to the lower casing; The circuit board 2 is arranged in the first circuit board area, and the edge near the bottom end surface of the circuit board 1 protrudes with a clamping block 1, and the clamping block 1 passes through the clamping groove and fixes the circuit board 2 and the circuit board 1 connect.

As a preferred technical solution of the present invention, the circuit board 3 is arranged in the second circuit board area, and the edge near the bottom end surface of the circuit board 1 protrudes from the clamping block 2, and the clamping block 2 passes through the clamping groove and Fixedly connect circuit board three to circuit board one.

As a preferred technical solution of the utility model, the circuit board body has a power supply circuit, an indicator light circuit, a photocoupler, a normally open contact drive circuit, a normally closed contact drive circuit and a controllable switch device.

As a preferred technical solution of the utility model, the clamping grooves are distributed on one edge of the circuit board, and are arranged correspondingly to the first clamping block and the second clamping block.

The beneficial effects achieved by the utility model are:

1. The structure of the utility model is simple, convenient and practical, and the installation method is the same as that of the traditional relay, and there is no need to change the user's usage habits.

2. The circuit board body of the utility model is formed by cooperating and splicing between the clamping blocks and the clamping slots, and does not need to be connected by connectors, which solves the problem that the current of small-sized connectors cannot meet the 5A requirement.

3. There is a baffle in the middle of the inner cavity of the lower casing of the utility model, which separates the circuit board 2 from the circuit board 3, and the baffle is used to increase the safety distance of components on the circuit board.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model.

In the attached picture:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of a circuit board of the present invention;

Fig. 3 is a schematic diagram of the second structure of the circuit board of the present utility model;

Fig. 4 is a schematic diagram of three structures of the circuit board of the present invention;

Fig. 5 is the implementation diagram of the utility model power supply circuit;

Fig. 6 is the implementation diagram of the indicator lamp circuit of the present invention;

Fig. 7 is an implementation diagram of the AC control circuit of the present invention.

Symbols in the figure: 1, upper housing; 2, lower housing; 3, circuit board one; 31, clamping groove; 4, circuit board two; 41, clamping block one; 5, circuit board three; 51, card Connect block two; 6, baffle plate.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower" and "horizontal" are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the utility model and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.

In the description of the present utility model, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

Embodiment 1: As shown in Figures 1-4, the utility model provides a PCB layout structure of a solid-state non-contact relay, including a circuit board body, an upper casing 1 and a lower casing 2, and the lower casing 2 It is a semi-closed box-shaped body with the bottom end closed and the top opening facing the upper casing 1. The lower casing 2 is provided with a baffle 6, and the baffle 6 is vertically fixed to the inner cavity of the lower casing 2, which connects the lower casing The inner cavity of the body 2 is divided into a first circuit board area and a second circuit board area; the circuit board body includes a circuit board 1 3, a circuit board 2 4 and a circuit board 3 5, and the circuit board 1 3 is arranged in parallel with the upper casing 1 , which is provided with a number of clamping grooves 31, which are vertically arranged on both sides of the end face of the lower housing 2 and the circuit board 2 4 and the circuit board 3 5; the circuit board 2 4 is arranged in the first circuit board area, and it A clamping block 1 41 protrudes from the edge of the bottom end surface of the circuit board 1 , and the clamping block 1 41 passes through the clamping groove 31 and is fixedly connected to the circuit board 2 4 and the circuit board 1 3 .

The circuit board three 5 is arranged in the second circuit board area, and the edge near the bottom end surface of the circuit board one 3 protrudes with a clamping block two 51, and the clamping block two 51 passes through the clamping groove 31 and connects the circuit board three 5 with the The circuit board-3 is fixedly connected.

The clamping slots 31 are distributed on the edge of the first circuit board 3 , and are arranged corresponding to the first clamping block 41 and the second clamping block 51 .

Embodiment 2: The utility model provides a PCB layout structure of a solid-state non-contact relay. The circuit board body has a power circuit, an indicator light circuit, a photocoupler, a normally open contact drive circuit, a normally closed contact drive circuit and Controllable switching device.

As shown in Figure 5, it is the implementation diagram of the power circuit, power- and power+ are the control signal input terminals, R8 is the current limiting resistor, D1 is the rectifier bridge, and C1 is the capacitor. When there is a control signal input, VCC is generated through the power circuit power supply.

As shown in Figure 6, it is the implementation diagram of the indicator light circuit, D1 is a light-emitting diode, and R7 is a current-limiting resistor. When a control signal is input, after the VCC power is generated through the power supply circuit, the indicator light is on to remind the user that the solid-state non-contact Relay output state switching.

As shown in Figure 7, U1 is a normally open photocoupler, U2 is a normally closed photocoupler, R5 and R6 are photocoupler current limiting resistors, R1 and R2 are normally open contact drive circuits, R3 and R4 are The normally closed contact drive circuit, Q1 and Q2 are controllable switching devices, and the AC control system uses thyristors.

1. When there is no control signal input, that is, the power circuit does not generate VCC power, the indicator light is off, U1 is not conducting, Q1 is not conducting, that is, the normally open contact is not conducting, U2 is conducting, and R3 and R4 are normally closed Under the action of the type contact drive circuit, Q2 is turned on, that is, the normally closed contact is turned on.

2. When there is a control signal input, after the VCC power is generated through the power circuit, the indicator light is on, the state of the output terminal is switched, U1 is turned on, and under the action of the drive circuit R1 and R2, Q1 is turned on, that is, the normally open contact is turned on , U2 is not conducting (closed), that is, the normally closed contact is not conducting (closed).

It is worth noting that the whole device is controlled by the main control button. Since the equipment matched with the control button is a common equipment and belongs to the existing Changshu technology, its electrical connection relationship and specific circuit structure will not be described here.

Finally, it should be noted that: the above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the It is still possible to modify the technical solutions described in the foregoing embodiments, or to perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (4)

1. a kind of PCB layout structure of solid-state contactless relaying, which is characterized in that including wiring board ontology, upper housing (1) under Shell (2), the lower case (2) are the semiclosed box-like body of a bottom end closure, top end opening towards upper housing (1), lower case (2) it is provided with baffle (6) in, baffle (6) is vertically fixed in lower case (2) inner cavity, and lower case (2) inner cavity is divided into first Wiring board region and the second wiring board region；The wiring board ontology includes wiring board one (3), wiring board two (4) and wiring board Three (5), wiring board one (3) are arranged in parallel with upper housing (1), offer several clamping grooves (31) thereon, close to lower case (2) End face two sides be vertically arranged wiring board two (4) and wiring board three (5)；The wiring board two (4) is set to first line plate area In domain, it is protruding with clamping block one (41) close to the edge of wiring board one (3) bottom face, clamping block one (41) passes through clamping groove (31) and by wiring board two (4) with wiring board one (3) it is fixedly connected.

2. a kind of PCB layout structure of solid-state contactless relaying according to claim 1, which is characterized in that the route Plate three (5) is set in the second wiring board region, and the edge close to wiring board one (3) bottom face is protruding with clamping block two (51), clamping block two (51) passes through clamping groove (31) and is fixedly connected with wiring board three (5) with wiring board one (3).

3. a kind of PCB layout structure of solid-state contactless relaying according to claim 1, which is characterized in that the route Plate ontology have power circuit, indicator light circuit, photoelectrical coupler, normally opened contact driving circuit, normally-closed contact driving circuit with Controllable switch device.

4. a kind of PCB layout structure of solid-state contactless relaying according to claim 2, which is characterized in that the clamping Slot (31) is distributed assist side one (3) edge, is correspondingly arranged with clamping block one (41), clamping block two (51).