Electromagnetic relay for intelligent and safe power utilization

Abstract

One side of the top of a base is fixedly connected with a supporting plate, one side of the supporting plate is provided with an electromagnetic coil, one side of the top of the supporting plate is fixedly connected with one side of a top plate, and one side of the top of the top plate is fixedly connected with one end of a normally-open elastic piece. The other end of the normally-open elastic piece is fixedly connected with the top of the movable plate, the top of the movable plate is rotationally connected with the other side of the top of the top plate, the lower end of the movable plate is fixedly connected with the movable contact piece, and the movable contact piece makes contact with the normally-open contact piece. The multi-device normally-open type electromagnetic relay effectively solves the problems that in the working process of an existing multi-device normally-open type electromagnetic relay, the instability of the magnitude of current cannot be known, so that whether the magnitude of current of the devices is in the normal operation state cannot be known, and when multiple devices are in the normally-open state, once one device is in the normally-open state, the instability phenomenon occurs. The normal operation of other equipment can be influenced when the equipment is in use, so that certain potential safety hazards exist.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of relays, and in particular to an electromagnetic relay for intelligent and safe electricity use. Background Art

[0002] Electromagnetic relay is a switch that uses electromagnet to control the on and off of the working circuit. Its working principle is to close the switch S in the low-voltage control circuit, and the current passes through the coil of the electromagnet A to generate a magnetic field, thereby generating attraction to the armature, so that the moving and static contacts are in contact, the working circuit is closed, and the motor works; when the low-voltage switch is disconnected, the current in the coil disappears, and the armature, under the action of the spring, disengages the moving and static contacts, disconnects the working circuit, and stops the motor. As long as a certain voltage is applied to both ends of the coil, a certain current will flow through the coil, thereby generating electromagnetic induction, and the armature will overcome the pulling force of the return spring under the action of electromagnetic attraction and be attracted to the iron core, thereby driving the moving contact of the armature and the static contact (normally open contact) to attract. When the coil is powered off, the electromagnetic attraction also disappears, and the armature will return to its original position under the reaction force of the spring, so that the moving contact and the original static contact (normally closed contact) are released. In this way, the attraction and release achieve the purpose of conduction and disconnection in the circuit. The "normally open and normally closed" contacts of the relay can be distinguished as follows: the static contact that is in the disconnected state when the relay coil is not energized is called the "normally open contact"; the static contact that is in the connected state is called the "normally closed contact".

[0003] The existing normally open electromagnetic relays for multiple devices cannot know the instability of the current during operation, resulting in the inability to know whether the current of the device is within normal operation.

[0004] Moreover, when multiple devices are in the normally-on state, if one of the devices becomes unstable, it will affect the normal operation of other devices, posing certain safety risks.

[0005] Therefore, an electromagnetic relay with intelligent and safe electricity use is needed to solve the above problems. Summary of the invention

[0006] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, provides a solution that is significantly different from the existing technology, and mainly provides an electromagnetic relay for intelligent and safe use of electricity to solve the technical problems raised in the above background technology.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: an electromagnetic relay for intelligent and safe electricity use, wherein one side of the top of the base is connected and fixed to a support plate, an electromagnetic coil is arranged on one side of the support plate, one side of the top of the support plate is connected and fixed to one side of a top plate, one side of the top of the top plate is connected and fixed to one end of a normally open elastic member, the other end of the normally open elastic member is connected and fixed to the top of a movable plate, the top of the movable plate is rotatably connected to the other side of the top of the top plate, the lower end of the movable plate is connected and fixed to a movable contact sheet, and the movable contact sheet is in contact with the normally open contact sheet.

[0008] Preferably, the upper end of the movable contact piece is electrically connected to a current sensor, and the current sensor is electrically connected to an overload control device.

[0009] Preferably, the overload control device includes a drive motor, which is fixedly connected to the base, which is transmission-connected to the slider, which is slidingly connected to the base left and right, and which has inclined surfaces on both sides. The inclined surfaces on both sides of the slider are in contact with the inclined surfaces on both sides of the top of the top block, and the top of the top block is connected and fixedly connected to the bottom of a symmetrically arranged top sheet, and the two top sheets are respectively located at the lower end of the movable contact sheet.

[0010] Preferably, a reset elastic member is provided at the bottom of the top block.

[0011] Preferably, the output end of the driving motor is connected to a gear transmission, and the gear is meshed with a tooth block arranged on the top of the slider.

[0012] Preferably, the opposing surfaces of the tops of the normally open contact sheet and the normally closed contact sheet are respectively provided with a normally open contact end and a normally closed contact end, and the opposing surface edges of the normally open contact end and the normally closed contact end are both inclined surfaces.

[0013] Preferably, a protective shell is arranged on the top of the base, and the protective shell is a plastic shell made of a transparent material.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the current sensor can monitor the current consumption of each device in real time. Once current instability occurs, the overload control device will be immediately driven to control the shutdown of the unstable device to avoid affecting the normal operation of other devices and the occurrence of safety hazards.

[0015] The movement of the slider can be controlled by driving the motor to lift the top block, further allowing the top plate to separate the movable contact plate from the normally open contact plate, and one driving motor can control the separation of one side of the movable contact plate of two devices from the normally open contact plate.

[0016] When the driving motor controls the slider to move and lifts the top block, further causing the top plate to separate the movable contact plate from the normally open contact plate, it proves that there is a problem with the equipment. After the inspection is completed, reopen the relay circuit switch to allow the driving motor to rotate and reset, and then the reset elastic member pushes the top block and the top plate back to complete the reset.

[0017] The protective shell is a transparent plastic shell, so that the staff can see the contact between the internal movable contact sheet and the normally open contact sheet 52, so that the inside can be seen more intuitively, and the protective shell can prevent dust and moisture from entering, avoiding the occurrence of relay short circuit.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of the overload control device in the present invention; Figure 5 It is a schematic diagram of the structure of the protective shell in the present invention.

[0020] Markings in the figure: 1-base, 11-protective shell, 2-support plate, 3-top plate, 4-normally open elastic member, 5-movable plate, 51-movable contact piece, 52-normally open contact piece, 521-normally open contact end, 53-normally closed contact piece, 531-normally closed contact end, 6-current sensor, 7-overload control device, 71-drive motor, 72-gear, 73-slider, 74-top block, 75-top piece, 8-electromagnetic coil. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0024] See also Figure 1-3 , an electromagnetic relay for intelligent safe electricity use, including a base 1, one side of the top of the base 1 is connected and fixed to a support plate 2, an electromagnetic coil 8 is arranged on one side of the support plate 2, and a movable contact piece 51 can be controlled to contact with a normally closed contact piece 53 through the electromagnetic coil 8, one side of the top of the support plate 2 is connected and fixed to one side of a top plate 3, one side of the top of the top plate 3 is connected and fixed to one end of a normally open elastic member 4, the normally open elastic member 4 can be a spring, the other end of the normally open elastic member 4 is connected and fixed to the top of a movable plate 5, the top of the movable plate 5 is rotatably connected to the other side of the top of the top plate 3, the lower end of the movable plate 5 is connected and fixed to a movable contact piece 51, one side of the movable contact piece 51 is in contact with a normally open contact piece 52, and a normally closed contact piece 53 is arranged on the other side of the movable contact piece 51.

[0025] The upper end of the movable contact piece 51 is electrically connected to the current sensor 6, and the current sensor 6 is electrically connected to the overload control device 7. The current sensor 6 can monitor the current consumption of each device in real time. Once current instability occurs, the overload control device 7 will be immediately driven to control the shutdown of the unstable device to avoid affecting the normal operation of other devices and the occurrence of safety hazards.

[0026] The overload control device 7 includes a driving motor 71, which is connected and fixed to the base 1, and is transmission-connected to a slider 73, which is slidably connected to the base 1 left and right, with inclined surfaces on both sides of the slider 73, which are in contact with the inclined surfaces on both sides of the top of the top block 74, and the top of the top block 74 is connected and fixed to the bottom of a symmetrically arranged top sheet 75, and the two top sheets 75 are respectively located at the lower end of the movable contact sheet 51, and the slider 73 can be controlled to move by the driving motor 71 to lift the top block 74, so that the top sheet 75 further separates the movable contact sheet 51 from the normally open contact sheet 52. In addition, a driving motor 71 can control the separation of one side of the movable contact sheet 51 of the two devices from the normally open contact sheet 52. A reset elastic member 76 is provided at the bottom of the top block (74). The reset elastic member 76 can be a spring. When the driving motor 71 controls the slider 73 to move, the top block 74 is lifted up, and further causes the top sheet to separate the movable contact sheet 51 from the normally open contact sheet 52, it proves that there is a problem with the equipment. After the inspection is completed, the relay circuit switch is reopened to allow the driving motor 71 to rotate and reset, and then the top block 74 and the top sheet 74 are pulled back by the reset elastic member 76 to complete the reset.

[0027] See also Figure 4 The output end of the driving motor 71 is connected to the gear 72, and the gear 72 is meshed with the tooth block set on the top of the slider 73. Through the meshing transmission of the gear 72 and the tooth block of the slider 73, the slider 73 can be driven to slide more stably.

[0028] See also Figure 3 The normally open contact end 521 and the normally closed contact end 531 are respectively arranged on opposite surfaces of the top of the normally open contact sheet 52 and the normally closed contact sheet 53, and the edges of the opposite surfaces of the normally open contact end 521 and the normally closed contact end 531 are both inclined surfaces. Since the edges of the opposite surfaces of the normally open contact end 521 and the normally closed contact end 531 are both inclined surfaces, it is convenient for the top sheet 75 to separate the two.

[0029] See also Figure 5 A protective shell 11 is arranged on the top of the base 1. The protective shell 11 is a plastic shell made of a transparent material, so that the staff can see the contact between the internal movable contact sheet 51 and the normally open contact sheet 52, so that the inside can be seen more intuitively. In addition, the protective shell 11 can prevent the entry of dust and moisture, and avoid the occurrence of short circuit.

[0030] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An electromagnetic relay for intelligent and safe use of electricity, characterized in that: The invention comprises a base (1), wherein one side of the top of the base (1) is connected and fixed to a support plate (2), an electromagnetic coil (8) is arranged on one side of the support plate (2), one side of the top of the support plate (2) is connected and fixed to one side of a top plate (3), one side of the top of the top plate (3) is connected and fixed to one end of a normally open elastic member (4), the other end of the normally open elastic member (4) is connected and fixed to the top of a movable plate (5), the top of the movable plate (5) is rotatably connected to the other side of the top of the top plate (3), the lower end of the movable plate (5) is connected and fixed to a movable contact sheet (51), and the movable contact sheet (51) is in contact with a normally open contact sheet (52).

2. The electromagnetic relay for intelligent safe electricity use according to claim 1, characterized in that: The upper end of the movable contact piece (51) is electrically connected to the current sensor (6), and the current sensor (6) is electrically connected to the overload control device (7).

3. The electromagnetic relay for intelligent safe electricity use according to claim 2, characterized in that: The overload control device (7) comprises a drive motor (71), the drive motor (71) is connected and fixed to the base (1), the drive motor (71) is transmission-connected to a slider (73), the slider (73) is slidably connected to the base (1) left and right, inclined surfaces are provided on both sides of the slider (73), the inclined surfaces provided on both sides of the slider (73) are in contact with inclined surfaces provided on both sides of the top of a top block (74), the top of the top block (74) is connected and fixed to the bottom of a symmetrically arranged top sheet (75), and the two top sheets (75) are respectively located at the lower end of the movable contact sheet (51).

4. The electromagnetic relay for intelligent safe electricity use according to claim 3, characterized in that: A reset elastic member (76) is disposed at the bottom of the top block (74).

5. The electromagnetic relay for intelligent safe electricity use according to claim 3, characterized in that: The output end of the driving motor (71) is transmission-connected to a gear (72), and the gear (72) is meshed with a tooth block arranged on the top of the slider (73).

6. The electromagnetic relay for intelligent safe electricity use according to claim 1, characterized in that: The normally open contact end (521) and the normally closed contact end (531) are respectively arranged on opposite surfaces of the top of the normally open contact sheet (52) and the normally closed contact sheet (53), and the edges of the opposite surfaces of the normally open contact end (521) and the normally closed contact end (531) are both inclined surfaces.

7. The electromagnetic relay for intelligent safe electricity use according to claim 1, characterized in that: A protective shell (11) is arranged on the top of the base (1), and the protective shell (11) is a plastic shell made of a transparent material.

Images