阅读说明：本技术 一种切换型电磁继电器及其控制电路 (Switching type electromagnetic relay and control circuit thereof ) 是由 王天宇 于 2020-11-16 设计创作，主要内容包括：本发明公开了一种切换型电磁继电器及其控制电路,切换型电磁继电器包括基座、电磁铁、与电磁铁联动的衔铁、弹簧、转换构件及两对静触点,转换构件两端各设有一个动触点,电磁铁固定在基座上,弹簧第一端设置在基座上且弹簧第二端连接衔铁第一端,衔铁与基座上的支架连接,衔铁第二端连接转换构件,转换构件两端的动触点与两对静触点的位置对应设置。本发明实施例设有两对静触点,转换构件设有两个动触点,动触点与静触点的位置对应设置,通过电磁铁线圈电流的通断控制衔铁及转换构件的运动,使转换构件动触点与其中一对静触点连接,实现对两路电路的同时控制。本发明实施例可广泛应用于自动控制领域。(The invention discloses a switching type electromagnetic relay and a control circuit thereof, wherein the switching type electromagnetic relay comprises a base, an electromagnet, an armature linked with the electromagnet, a spring, a switching member and two pairs of stationary contacts, two ends of the switching member are respectively provided with a movable contact, the electromagnet is fixed on the base, a first end of the spring is arranged on the base, a second end of the spring is connected with a first end of the armature, the armature is connected with a bracket on the base, a second end of the armature is connected with the switching member, and the movable contacts at the two ends of the switching member are arranged corresponding to the positions of the two pairs of stationary contacts. The embodiment of the invention is provided with two pairs of fixed contacts, the conversion component is provided with two movable contacts, the movable contacts and the fixed contacts are correspondingly arranged, and the movement of the armature and the conversion component is controlled by the on-off of the current of the electromagnet coil, so that the movable contacts of the conversion component are connected with one pair of the fixed contacts, and the simultaneous control of two circuits is realized. The embodiment of the invention can be widely applied to the field of automatic control.)

1. A switching type electromagnetic relay is characterized by comprising a base, an electromagnet, an armature linked with the electromagnet, a spring, a switching member and two pairs of stationary contacts, wherein two ends of the switching member are respectively provided with a movable contact, the electromagnet is fixed on the base, a first end of the spring is arranged on the base, a second end of the spring is connected with a first end of the armature, the armature is connected with a support on the base, a second end of the armature is connected with the switching member, and the movable contacts at two ends of the switching member are arranged corresponding to the two pairs of stationary contacts.

2. A switching type electromagnetic relay according to claim 1, characterized in that the movable contacts at both ends of said switching member are convex square blocks.

3. A switching type electromagnetic relay according to claim 2, characterized in that said two pairs of stationary contacts are concave grooves, said concave grooves being sized to mate with said convex square blocks.

4. The switching type electromagnetic relay according to claim 1, wherein said switching member is fixed at an intermediate position, and a connection point of said switching member with said second end of said armature is provided at an end position of the switching member.

5. The switching electromagnetic relay according to claim 1, further comprising a housing and a spring, wherein the spring is partially disposed outside the housing, the spring comprises the two pairs of stationary contact springs and the electromagnet coil spring, the two pairs of stationary contact springs are connected to the two pairs of stationary contacts through wires, and the electromagnet coil spring is connected to the electromagnet coil through wires.

6. A control circuit comprising the switching type electromagnetic relay according to any one of claims 1 to 5, a first device control circuit and a second device control circuit, wherein the first device control circuit comprises two input terminals, the second device control circuit comprises two input terminals, a first pair of stationary contacts of the switching type electromagnetic relay is connected with the two input terminals of the first device control circuit, and a second pair of stationary contacts of the switching type electromagnetic relay is connected with the two input terminals of the second device control circuit.

7. The control circuit of claim 6, wherein the first device control circuit is functionally opposite to the first device control circuit.

8. The control circuit of claim 7, wherein the first device control circuit is a heating circuit and the second device control circuit is a cooling circuit.

Technical Field

The invention relates to the field of automatic control, in particular to a switching type electromagnetic relay and a control circuit thereof.

Background

A relay is an electrically controlled device in which a predetermined step change occurs in an output amount when a change in an input amount (excitation amount) meets a prescribed requirement. Current electronic relays include 3 basic forms: (1) the coil is in a dynamic type (normally open, H type), two contacts are disconnected when the coil is not electrified, and the two contacts are closed after the coil is electrified; (2) the coil is of a dynamic break type (normally closed and D type), two contacts are closed when the coil is not electrified, and the two contacts are disconnected after the coil is electrified; (3) the switching type relay has 3 contacts, namely a moving contact in the middle and a fixed contact at the upper part and the lower part, when the coil is not electrified, the moving contact is disconnected with the first fixed contact and is closed with the second fixed contact, and after the coil is electrified, the moving contact is closed with the first fixed contact and is disconnected with the second fixed contact.

Disclosure of Invention

In view of the above, an object of the embodiments of the present invention is to provide a switching type electromagnetic relay and a control circuit thereof. The switching type electromagnetic relay realizes the simultaneous control of two circuits.

In a first aspect, an embodiment of the present invention provides a switching electromagnetic relay, including a base, an electromagnet, an armature linked with the electromagnet, a spring, a switching member, and two pairs of stationary contacts, where two ends of the switching member are respectively provided with a moving contact, the electromagnet is fixed on the base, a first end of the spring is disposed on the base, a second end of the spring is connected to a first end of the armature, the armature is connected to a bracket on the base, a second end of the armature is connected to the switching member, and the moving contacts at two ends of the switching member are disposed corresponding to the positions of the two pairs of stationary contacts.

Optionally, the movable contacts at the two ends of the conversion member are raised square blocks.

Optionally, the two pairs of stationary contacts are concave grooves, and the concave grooves are matched with the convex square blocks in size.

Optionally, the intermediate position of the conversion member is fixed, and the connection point of the conversion member and the second end of the armature is arranged at the end position of the conversion member.

Optionally, the switching electromagnetic relay further includes a housing and an elastic sheet, the elastic sheet is partially disposed outside the housing, the elastic sheet includes the two pairs of stationary contact elastic sheets and the electromagnet coil elastic sheet, the two pairs of stationary contact elastic sheets are connected to the two pairs of stationary contacts through wires, and the electromagnet coil elastic sheet is connected to the electromagnet coil through wires.

In a second aspect, an embodiment of the present invention provides a control circuit, including the above-mentioned switching type electromagnetic relay, a first device control circuit, and a second device control circuit, where the first device control circuit includes two input terminals, the second device control circuit includes two input terminals, a first pair of stationary contacts of the switching type electromagnetic relay is connected to the two input terminals of the first device control circuit, and a second pair of stationary contacts of the switching type electromagnetic relay is connected to the two input terminals of the second device control circuit.

Optionally, the first device control circuitry is functionally reversed from the first device control circuitry.

Optionally, the first device control circuit is a heating circuit, and the second device control circuit is a cooling circuit.

The implementation of the embodiment of the invention has the following beneficial effects: the embodiment of the invention is provided with two pairs of fixed contacts, the conversion component is provided with two movable contacts, the movable contacts and the fixed contacts are correspondingly arranged, the movement of the armature is controlled through the on-off of the current of the electromagnet coil, and the movement of the conversion component connected with the armature is further controlled, so that the movable contacts of the conversion component are connected with one pair of the fixed contacts, and the simultaneous control of two circuits by the relay is realized.

Drawings

Fig. 1 is a schematic structural diagram of a switching electromagnetic relay according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional structural diagram of a movable contact and a fixed contact paired according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a control circuit according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments. The step numbers in the following embodiments are provided only for convenience of illustration, the order between the steps is not limited at all, and the execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art.

As shown in fig. 1, an embodiment of the present invention provides a switching type electromagnetic relay 100, including a base 101, an electromagnet 102, an armature 103 linked with the electromagnet, a spring 104, a switching member 105, a first pair of stationary contacts 106 and a second pair of stationary contacts 107, where two ends of the switching member 105 are respectively provided with one movable contact 108, the electromagnet 102 is fixed on the base 101, a first end of the spring 104 is disposed on the base 101, a second end of the spring 104 is connected to a first end of the armature 103, the armature 103 is connected to a bracket on the base 101, a second end of the armature 103 is connected to the switching member 105, and the movable contacts 108 at two ends of the switching member 105 are disposed corresponding to positions of the first pair of stationary contacts 106 and the second pair of stationary contacts 107.

The switching type electromagnetic relay 100 operates as follows: after the coil of the electromagnet 102 is electrified, magnetic force is generated, and the armature 103 moves downwards under the action of the magnetic force, so that the movable contacts 108 at the two ends of the conversion component 105 are in contact connection with the first pair of fixed contacts 106; when the coil of the electromagnet 102 is de-energized, the magnetic force disappears, and the armature 103 moves upward under the action of the spring 104, so that the movable contacts 108 at both ends of the switching member 105 are in contact connection with the second pair of stationary contacts 106.

It should be noted that the moving contact may be at the end point of the switching member, or may be at other positions, and the present invention is not limited in particular.

It should be noted that the shape of the moving contact may be a square block or a circular block, and the present invention is not limited in particular. The two pairs of stationary contacts may have a convex surface, a concave surface, or a flat surface, and the present invention is not limited in particular.

The position of the connection point of the conversion member and the second end of the armature at the conversion member is not limited, and may be at an intermediate position, an off-center position, or an end position of the conversion member.

Optionally, the movable contacts at the two ends of the conversion member are raised square blocks. When the shape of this embodiment movable contact is square piece, area of contact is bigger, and stability is better.

Alternatively, as shown in fig. 2, the first pair of stationary contacts 106 and the second pair of stationary contacts 107 are concave grooves, the movable contact 108 is a convex square block, and the concave grooves are matched with the square block in size. This embodiment stationary contact adopts the concave groove, and the movable contact adopts protruding square piece to the size is mated, and when stationary contact and movable contact back, the interlock is better, is difficult to take place the displacement, and stability is better.

Optionally, the intermediate position of the conversion member is fixed, and the connection point of the conversion member and the second end of the armature is arranged at the end position of the conversion member.

In the embodiment, the connecting point of the conversion member is arranged at the end point position, and the conversion member is driven to move by the connecting point more easily, so that the conversion member is less worn and has longer service life.

Optionally, the switching electromagnetic relay further includes a housing and an elastic sheet, the elastic sheet is partially disposed outside the housing, the elastic sheet includes the two pairs of stationary contact elastic sheets and the electromagnet coil elastic sheet, the two pairs of stationary contact elastic sheets are connected to the two pairs of stationary contacts through wires, and the electromagnet coil elastic sheet is connected to the electromagnet coil through wires.

Encapsulate the relay in this embodiment in the casing, draw forth the casing outside stationary contact and electromagnet coil wiring end through the shell fragment, under this condition, the relay is difficult to damage, makes things convenient for the wiring moreover.

The implementation of the embodiment of the invention has the following beneficial effects: the embodiment of the invention is provided with two pairs of fixed contacts, the conversion component is provided with two movable contacts, the movable contacts and the fixed contacts are correspondingly arranged, the movement of the armature is controlled through the on-off of the current of the electromagnet coil, and the movement of the conversion component connected with the armature is further controlled, so that the movable contacts of the conversion component are connected with one pair of the fixed contacts, and the simultaneous control of two circuits by the relay is realized.

As shown in fig. 3, an embodiment of the present invention provides a control circuit, which includes the above-mentioned switching type electromagnetic relay, a first device control circuit, and a second device control circuit, where the first device control circuit includes two input terminals, the second device control circuit includes two input terminals, a first pair of stationary contacts of the switching type electromagnetic relay is connected to the two input terminals of the first device control circuit, and a second pair of stationary contacts of the switching type electromagnetic relay is connected to the two input terminals of the second device control circuit.

The working principle of the control circuit is as follows: after a control switch of the electromagnet coil is closed, the coil of the electromagnet is electrified to generate magnetic force, the armature iron moves downwards under the action of the magnetic force, so that the movable contacts at the two ends of the conversion component are in contact connection with the first pair of fixed contacts, and the first device control circuit is switched on and starts to work; after the control switch of the electromagnet coil is switched off, the magnetic force disappears after the electromagnet coil is switched off, the armature iron moves upwards under the action of the magnetic force, so that the movable contacts at the two ends of the conversion component are in contact connection with the second pair of fixed contacts, and the second device controls the circuit to be switched on and starts to work. The control circuit can simultaneously control two circuits, and one circuit is switched on and the other circuit is switched off at any time.

The implementation of the embodiment of the invention has the following beneficial effects: the embodiment of the invention is provided with two pairs of fixed contacts, the conversion component is provided with two movable contacts, the movable contacts and the fixed contacts are correspondingly arranged, the movement of the armature is controlled through the on-off of the current of the electromagnet coil, and the movement of the conversion component connected with the armature is further controlled, so that the movable contacts of the conversion component are connected with one pair of the fixed contacts, and the simultaneous control of two circuits by the relay is realized.

Optionally, the first device control circuitry is functionally reversed from the first device control circuitry. In this embodiment, the first device control circuit and the first device control circuit having opposite functions do not operate simultaneously, and the operation is simple and the practicability is good using the control circuit.

Optionally, the first device control circuit is a heating circuit, and the second device control circuit is a cooling circuit. The application scenes of the embodiment are more, if a certain workshop of a factory needs to realize constant temperature, the fan loop can be cooled but can be driven only by a low-power supply, the heating system loop needs a high-power supply to be driven, the heating system loop and the heating system loop cannot run simultaneously, the switching type electromagnetic relay is adopted to switch the work of two paths of systems, and the power supplies of the two systems and the power supply of the control circuit are completely isolated.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.