Semi-closed relay

Abstract

The utility model relates to the technical field of relays, in particular to a semi-closed relay which comprises a base assembly, and the top of the base assembly is provided with a top assembly. According to the utility model, the over-current protector and the over-voltage protector are utilized to effectively prevent the relay from being damaged and influenced by circuit faults, when the over-current protector enters a set state, the relay in the protector can be automatically released, and the protector exits from a protection state, so that misoperation on the motor in the set state is effectively prevented, and the service life of the motor is prolonged. Therefore, the relay is damaged, the service life of the relay is prolonged, the normal working state of the relay can be kept, the stability and the reliability of the relay are improved, and the stability and the reaction speed of the relay can be improved by adding a filter circuit in the relay and filtering interference in input signals.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a semi-closed relay. Background Technique

[0002] A relay is an electrical control device. When the change of the input quantity reaches the specified requirement, it is an electrical appliance that makes the controlled quantity undergo a predetermined step change in the electrical output circuit. It is usually applied to an automatic control circuit. It is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit. Relays have various classifications: they can be classified in different dimensions according to the working principle or structural characteristics, external dimensions, load, and protection characteristics of the relay.

[0003] The authorized announcement number CN218769305U discloses a semi-closed relay. The semi-closed relay is provided with a heat dissipation through groove on the protection structure that matches the static contact structure of the relay, exposing the high-heat-generating static contacts of the relay except for the coil and the moving contacts outside the protection structure. By extending the bridge arm of the static contact of the relay and extending the extended bridge arm outside the protection structure, the heat of the contact is directly and quickly conducted to the air outside the protection structure through the extended bridge arm, greatly accelerating the heat dissipation of the contact and increasing the working current of the relay; however, at present, during the use of the relay, if a fault occurs inside the circuit, it is very easy to damage the relay, and in an environment with a large electromagnetic field, it is also very easy to affect the quality of the input signal of the relay and directly affect the working efficiency of the relay. Therefore, a semi-closed relay is needed to improve the above problems. Content of the Utility Model

[0004] In order to solve the problems that during the use of the current relay, if a fault occurs inside the circuit, it is very easy to damage the relay, and in an environment with a large electromagnetic field, it is also very easy to affect the quality of the input signal of the relay and directly affect the working efficiency of the relay, the purpose of the present utility model is to provide a semi-closed relay to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] A semi-closed relay, including a base assembly, and a top assembly is arranged on the top of the base assembly;

[0007] The base assembly includes a base, the base is fixedly connected with a printed board, and a contact power connection jack and a coil power connection jack are opened inside the printed board;

[0008] The top component includes an enclosure. Inside the enclosure, a supporting plate is fixedly connected. On the top of the supporting plate, an overcurrent protector and an overvoltage protector are fixedly connected. On the top of the supporting plate, a damping plate is fixedly connected. There are two damping plates, and a reaction spring is arranged between the two damping plates. Inside the enclosure, a bottom plate is fixedly connected, and a filter circuit device is fixedly connected to the top of the bottom plate.

[0009] As a preferred solution of the present utility model, two coil power connection jacks are provided, several contact power connection jacks are provided, and a ground wire connection end is fixedly connected to the top of the bottom plate.

[0010] As a preferred solution of the present utility model, a contact power connection plug and a coil power connection plug are fixedly connected to the bottom of the enclosure. The contact power connection plug is used in cooperation with the coil power connection jack, and the coil power connection plug is used in cooperation with the contact power connection jack.

[0011] As a preferred solution of the present utility model, a coil body is fixedly connected inside the enclosure. A bearing plate is fixedly connected to the side of the coil body, and a magnetic circuit is fixedly connected to the side of the bearing plate.

[0012] As a preferred solution of the present utility model, a normally open contact is fixedly connected to the top of the bearing plate, and a cable is fixedly connected to the side of the normally open contact.

[0013] As a preferred solution of the present utility model, a normally closed contact is fixedly connected to the bottom of the magnetic circuit, and several normally closed contacts are provided.

[0014] As a preferred solution of the present utility model, several coil wiring terminals are provided on the top of the base.

[0015] As a preferred solution of the present utility model, contact wiring terminals are provided on the top of the base, and a card slot is provided at the bottom of the base.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. In the present utility model, by using the overcurrent protector and the overvoltage protector, damage and influence of circuit faults on the relay can be effectively avoided. When the overcurrent protector enters the set state, the relay inside the protector will automatically release, and the protector exits the protection state, effectively preventing misoperation of the motor in the set state, thereby damaging the relay, and further increasing the service life of the relay, maintaining the normal working state of the relay, and improving the stability and reliability of the relay.

[0018] 2. In the present utility model, by adding a filter circuit device inside the relay to filter out the interference in the input signal, the stability and response speed of the relay can be improved, enabling the relay to have a sensitivity adjustment function. By adjusting the sensitivity, the relay can be more accurate and reliable when responding to weak signals. Reasonably adjusting the sensitivity of the relay can effectively reduce the probability of misoperation and faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the internal structure of the top component of the present utility model;

[0021] Figure 3 is a schematic diagram of the protection component structure of the present utility model;

[0022] Figure 4 is a schematic diagram of the base component structure of the present utility model.

[0023] In the figure: 1. Base component; 101. Base; 102. Card slot; 103. Coil terminal; 104. Contact terminal; 105. Stencil; 106. Contact power jack; 107. Coil power jack; 2. Top component; 201. Enclosure; 202. Contact power plug; 203. Coil power plug; 204. Normally closed contact; 205. Magnetic circuit; 206. Carrier plate; 207. Bottom plate; 208. Filter circuit device; 209. Normally open contact; 210. Cable; 211. Ground connection terminal; 212. Support plate; 213. Overcurrent protector; 214. Damping plate; 215. Return spring; 216. Overvoltage protector; 217. Coil body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment, please refer to Figures 1 - 4 , the present utility model provides a technical solution:

[0026] A semi - enclosed relay includes a base component 1, and a top component 2 is arranged on the top of the base component 1.

[0027] In this embodiment, as shown in Figure 1 , Figure 2 , Figure 3 andFigure 4 As shown in the figure, the base assembly 1 includes a base 101, the base 101 is fixedly connected with a stereotype plate 105, a contact power connection jack 106 and a coil power connection jack 107 are arranged inside the stereotype plate 105, the top assembly 2 includes an enclosure 201, a support plate 212 is fixedly connected inside the enclosure 201, an overcurrent protector 213 and an overvoltage protector 216 are fixedly connected to the top of the support plate 212, a damping plate 214 is fixedly connected to the top of the support plate 212, there are two damping plates 214, a reaction spring 215 is arranged between the two damping plates 214, a bottom plate 207 is fixedly connected inside the enclosure 201, a filter circuit device 208 is fixedly connected to the top of the bottom plate 207. The overcurrent protector 213 and the overvoltage protector 216 can effectively avoid the damage and influence of circuit faults on the relay. When the overcurrent protector 213 enters the set state, the relay inside the protector will be automatically released, and the protector exits the protection state, effectively preventing misoperation of the motor during the set state, thereby damaging the relay, and further increasing the service life of the relay, and can maintain the normal working state of the relay, improving the stability and reliability of the relay.

[0028] Among them, there are two coil power connection jacks 107, several contact power connection jacks 106 are arranged, a ground wire connection end 211 is fixedly connected to the top of the bottom plate 207, a contact power connection plug 202 and a coil power connection plug 203 are fixedly connected to the bottom of the enclosure 201. The contact power connection plug 202 is used in cooperation with the coil power connection jack 107, and the coil power connection plug 203 is used in cooperation with the contact power connection jack 106. A coil body 217 is fixedly connected inside the enclosure 201, a carrier plate 206 is fixedly connected to the side of the coil body 217, and a magnetic circuit 205 is fixedly connected to the side of the carrier plate 206. By adding a filter circuit device 208 inside the relay to filter the interference in the input signal, the stability and response speed of the relay can be improved, enabling the relay to have a sensitivity adjustment function. By adjusting the sensitivity, the relay can be more accurate and reliable when responding to weak signals. Reasonably adjusting the sensitivity of the relay can effectively reduce the probability of misoperation and faults.

[0029] In this embodiment, as Figure 1 and Figure 4 shown, a normally open contact 209 is fixedly connected to the top of the carrier plate 206, a cable 210 is fixedly connected to the side of the normally open contact 209, a normally closed contact 204 is fixedly connected to the bottom of the magnetic circuit 205, there are several normally closed contacts 204, a coil connection terminal 103 is arranged on the top of the base 101, there are several coil connection terminals 103, a contact connection terminal 104 is arranged on the top of the base 101, and a card slot 102 is opened at the bottom of the base 101. The card slot 102 facilitates the relay to be stuck on the terminal block and be tightly installed with the electrical appliance, reducing the waste of installation space.

[0030] Working process of the utility model: When the semi-closed relay designed by this solution is working, the purpose of the coil body 217 is that after being energized, it can generate electromagnetic suction force to drive the armature of the magnetic circuit 205 to be attracted, and cause the normally closed contact 204 and the normally open contact 209 to produce displacement actions. The magnetic circuit 205 is composed of an iron core, an iron yoke and an armature. Its task is to establish a magnetic circuit 205 channel for the magnetic flux generated by the coil. In the magnetic circuit 205, the most important is the air gap of the magnetic circuit 205, which is a section of space between the armature and the iron core. When the coil is not energized, the air gap is at its maximum value and the contacts are in the initial state. After the coil body 217 is energized, the air gap is zero and the contacts are displaced to the action state. The function of the counter-force spring 215 is to provide a repulsive force in the opposite direction of the action for the armature. When the coil is powered off, it can help the armature, the normally closed contact 204 and the normally open contact 209 to reset. The normally closed contact 204 and the normally open contact 209 are used to execute the control output externally. After the relay is attracted, the normally closed contact 204 opens and the normally open contact 209 closes. After the coil is powered off and released, the normally closed contact 204 and the normally open contact 209 both reset to the initial state.

[0031] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A semi - enclosed relay, comprising a base assembly (1), characterized in that: A top component (2) is provided at the top of the base component (1); The base component (1) includes a base (101), the base (101) is fixedly connected to a stereotype (105), and a contact power connection jack (106) and a coil power connection jack (107) are provided inside the stereotype (105); The top component (2) includes an enclosure (201), a support plate (212) is fixedly connected inside the enclosure (201), an overcurrent protector (213) and an overvoltage protector (216) are fixedly connected to the top of the support plate (212), a damping plate (214) is fixedly connected to the top of the support plate (212), there are two damping plates (214), a reaction spring (215) is arranged between the two damping plates (214), a bottom plate (207) is fixedly connected inside the enclosure (201), and a filter circuit device (208) is fixedly connected to the top of the bottom plate (207).

2. The semi - enclosed relay according to claim 1, wherein: There are two coil power connection jacks (107), several contact power connection jacks (106) are provided, and a ground wire connection terminal (211) is fixedly connected to the top of the bottom plate (207).

3. A semi-closed relay according to claim 1, characterized in that: A contact power connection plug (202) and a coil power connection plug (203) are fixedly connected to the bottom of the enclosure (201), the contact power connection plug (202) is used in cooperation with the coil power connection jack (107), and the coil power connection plug (203) is used in cooperation with the contact power connection jack (106).

4. A semi - enclosed relay according to claim 1, wherein: A coil body (217) is fixedly connected inside the enclosure (201), a carrier plate (206) is fixedly connected to the side of the coil body (217), and a magnetic circuit (205) is fixedly connected to the side of the carrier plate (206).

5. The semi-enclosed relay according to claim 4, characterized in that: A normally open contact (209) is fixedly connected to the top of the carrier plate (206), and a cable (210) is fixedly connected to the side of the normally open contact (209).

6. The semi-enclosed relay according to claim 4, characterized in that: A normally closed contact (204) is fixedly connected to the bottom of the magnetic circuit (205), and several normally closed contacts (204) are provided.

7. A semi-closed relay according to claim 1, characterized in that: A coil wiring terminal (103) is provided at the top of the base (101), and several coil wiring terminals (103) are provided.

8. A semi-closed relay according to claim 1, characterized in that: A contact wiring terminal (104) is provided at the top of the base (101), and a card slot (102) is provided at the bottom of the base (101).

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