A small contactor

Abstract

The utility model relates to contactor technical field, and disclose a small contactor, including contactor casing, the inside of contactor casing is equipped with movable assembly, the both sides of fixed casing are all set up trouble jack, and place hole, the both sides of fixed casing are all equipped with trouble key, the top of support plate is equipped with elastic component, the top of elastic component is fixedly installed with top board, the both sides of top board bottom are all fixedly connected with fixed plate, the side of fixed plate is fixedly connected with movable plate. Through being equipped with trouble key, trouble jack and movable plate, can through manual pressing control block, make the movable contact block and the fixed contact block stable contact, insert the plug rod into the inside of trouble jack, and the plug rod is placed in the top of movable plate, thereby avoid fixed plate and movable plate to move upward, realize the forced contact of movable contact block and fixed contact block, make contactor circuit keep the state of being connected, avoided the problem that the normal work was affected because armature attracted and closed tightly.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, and more specifically, to a small contactor. Background Technology

[0002] A contactor is an electrical device used to control circuit switching, widely used in industrial automation, electrical control, and power systems. It uses electromagnetic force to control the connection and disconnection of high-current circuits, typically used to control the start and stop of motors, lighting systems, heating equipment, etc. The core function of a contactor is to control the opening and closing of contacts by energizing and de-energizing an electromagnetic coil, thereby controlling the connection or disconnection of the circuit. Contactors often work in conjunction with relays, time relays, overload protectors, and other devices for automated control and protection of electrical equipment.

[0003] However, in actual use, if the power supply voltage of the contactor coil is lower than the rated value, the electromagnetic force will be insufficient and the contactor will not be able to engage. If the voltage is too high, the coil may burn out, causing the contactor to malfunction. As the usage time increases, the coil may age or be damaged, resulting in the electromagnetic force weakening or disappearing and failing to engage properly. If the electromagnetic armature is not firmly engaged, it will affect the normal operation of the contactor and further affect the reliability of the contactor. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a small contactor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a small contactor, including a contactor housing, a fixed housing fixedly connected to the outer side of the contactor housing, a movable component installed on the inner side of the contactor housing, fault insertion holes and placement holes on both sides of the fixed housing, a fault key installed on the side of the fixed housing, the movable component including two support plates fixedly connected to the inner wall of the contactor housing, a spring component installed on the top of the support plate, a top plate fixedly installed on the top of the spring component, fixed plates fixedly connected to both sides of the bottom of the top plate, a movable plate fixedly connected to the side of the fixed plate, a connecting post fixedly connected to the top of the top plate, a moving contact plate fixedly connected to the top of the connecting post, a control block fixedly connected to the top of the moving contact plate, the control block movably sleeved with the top of the contactor housing, a moving armature fixedly connected to the middle of the bottom of the top plate, a stationary armature fixedly connected to the bottom of the inner wall of the contactor housing, and the fault key including a control plate and two plugs fixedly connected to the side of the control plate.

[0006] As a preferred embodiment of this utility model, external terminals are installed on both sides of the contactor housing, and coil terminals are installed on the front side of the contactor housing.

[0007] As a preferred embodiment of this utility model, the insertion rod is compatible with both the fault insertion hole and the placement hole, and the distance between the two placement holes is the same as the distance between the two insertion rods.

[0008] As a preferred embodiment of the present invention, the elastic component includes a cylindrical tube fixedly connected to the top of the support plate, a cylindrical rod movably sleeved on the top of the cylindrical tube, a spring sleeved on the outer side of the cylindrical tube, and the top of the cylindrical rod fixedly connected to the bottom of the top plate.

[0009] As a preferred embodiment of this utility model, both sides of the bottom of the moving contact plate are fixedly connected to moving contact blocks, and the two ends of the moving contact plate are bent and raised.

[0010] As a preferred embodiment of this utility model, stationary contact plates are fixedly connected to both sides of the inner wall of the contactor housing, and a stationary contact block is fixedly connected to the top of the stationary contact plate. The stationary contact block and the moving contact block are located in the same vertical direction.

[0011] As a preferred embodiment of this utility model, the contactor housing has sliding grooves on both sides, the movable plate passes through the sliding grooves, and the movable plate is slidably sleeved with the sliding grooves.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by providing a fault key, a fault socket, and a movable plate, allows the moving contact block to be stably contacted with the stationary contact block by manually pressing the control block. At the same time, the fixed plate drives the movable plate to move vertically downward along the inner side of the slide groove, inserting the plug rod into the inner side of the fault socket. The plug rod is placed on the top of the movable plate, thereby preventing the fixed plate and the movable plate from moving upward, achieving forced contact between the moving contact block and the stationary contact block, keeping the contactor circuit in a connected state, and avoiding the problem of normal operation being affected by the armature not being firmly attracted.

[0014] 2. This utility model has two elastic components. The spring has an upward pushing force on the top plate, thereby separating the moving contact block from the stationary contact block. By setting two elastic components, the circuit can be quickly disconnected and the disconnection can be made smooth. The two ends of the moving contact plate are bent and raised, which can lead the arc into the arc extinguishing chamber for arc extinguishing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fault socket structure of this utility model;

[0017] Figure 3This is a schematic diagram of the fault key structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the contactor housing of this utility model;

[0019] Figure 5 This is a schematic diagram of the slide groove structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the elastic component structure of this utility model.

[0021] In the diagram: 1. Contactor housing; 11. Stationary contact plate; 12. Stationary contact block; 13. Slide groove; 101. Fixed housing; 102. Fault socket; 103. Placement hole; 104. External terminal; 105. Coil terminal; 2. Movable assembly; 201. Support plate; 202. Spring assembly; 221. Cylindrical tube; 222. Cylindrical rod; 223. Spring; 203. Top plate; 204. Fixed plate; 241. Movable plate; 205. Connecting post; 206. Moving contact plate; 207. Moving contact block; 208. Control block; 210. Moving armature; 211. Stationary armature; 3. Fault key; 301. Control board; 302. Insert rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 6As shown, this utility model provides a small contactor, including a contactor housing 1. A fixed housing 101 is fixedly connected to the outer side of the contactor housing 1. A movable component 2 is installed on the inner side of the contactor housing 1. Fault insertion holes 102 and placement holes 103 are provided on both sides of the fixed housing 101. A fault key 3 is installed on the side of the fixed housing 101. The movable component 2 includes two support plates 201 fixedly connected to the inner wall of the contactor housing 1. A spring component 202 is installed on the top of the support plate 201. A top plate 203 is fixedly installed on the top of the spring component 202. Both sides of the bottom of the top plate 203 are fixedly connected to the spring component 202. A fixed plate 204 is fixedly connected to the top of the top plate 203. A movable plate 241 is fixedly connected to the side of the fixed plate 204. A connecting post 205 is fixedly connected to the top of the top plate 203. A movable contact plate 206 is fixedly connected to the top of the connecting post 205. A control block 208 is fixedly connected to the top of the movable contact plate 206. The control block 208 is movably sleeved with the top of the contactor housing 1. A movable armature 210 is fixedly connected to the middle of the bottom of the top plate 203. A stationary armature 211 is fixedly connected to the bottom of the inner wall of the contactor housing 1. The fault key 3 includes a control plate 301 and two plug rods 302 fixedly connected to the side of the control plate 301.

[0024] In this embodiment, the contactor coil is a common prior art and will not be described in detail here. It is not shown in the accompanying drawings. When the coil is energized, the moving armature 210 and the stationary armature 211 generate magnetic attraction. The moving armature 210 moves downward, thereby driving the moving contact plate 206 to move downward, which in turn causes the moving contact block 207 to contact the stationary contact block 12, thus connecting the circuit. When the coil is de-energized, the support plate 201 loses its magnetism. Under the elastic force of the spring 223, the top plate 203 drives the moving armature 210 to move upward. At the same time, the moving contact plate 206 drives the moving contact block 207 to move upward and separate from the stationary contact block 12, thus disconnecting the circuit.

[0025] When a product malfunctions, the moving armature 210 and the stationary armature 211 may not engage properly, leading to poor contact or no contact between the moving contact block 207 and the stationary contact block 12. By manually pressing the control block 208, the moving contact block 207 and the stationary contact block 12 can be stably contacted. At the same time, the fixed plate 204 drives the movable plate 241 to move vertically downward along the inner side of the slide groove 13, inserting the plug rod 302 into the inner side of the fault socket 102. The plug rod 302 is placed on top of the movable plate 241, thereby preventing the fixed plate 204 and the movable plate 241 from moving upward, achieving forced contact between the moving contact block 207 and the stationary contact block 12, and keeping the contactor circuit connected.

[0026] External terminals 104 are installed on both sides of the contactor housing 1, and coil terminals 105 are installed on the front of the contactor housing 1.

[0027] External terminal 104 is used for connection to external circuits and is connected to stationary contact plate 11. Coil terminal 105 is used to control the coil's on / off state.

[0028] The insertion rod 302 is compatible with the fault insertion hole 102 and the placement hole 103, and the distance between the two placement holes 103 is the same as the distance between the two insertion rods 302.

[0029] When the contactor is in normal use, the fault key 3 is installed horizontally, and the insertion rod 302 is inserted into the inside of the placement hole 103, which will not affect the movement of the movable plate 241. When the contactor malfunctions, the fault key 3 is rotated 90°, one insertion rod 302 is inserted into the inside of the fault insertion hole 102, and the other insertion rod 302 is placed at the bottom of the fixed housing 101 to block and position the top of the movable plate 241.

[0030] The elastic component 202 includes a cylindrical tube 221 fixedly connected to the top of the support plate 201, a cylindrical rod 222 movably sleeved on the top of the cylindrical tube 221, a spring 223 sleeved on the outside of the cylindrical tube 221, and the top of the cylindrical rod 222 fixedly connected to the bottom of the top plate 203.

[0031] Spring 223 exerts an upward thrust on top plate 203, thereby separating moving contact block 207 from stationary contact block 12. By setting two elastic components 202, the circuit can be quickly disconnected and the disconnection can be smooth.

[0032] Both sides of the bottom of the moving contact plate 206 are fixedly connected to moving contact blocks 207. The two ends of the moving contact plate 206 are bent and raised, which can lead the electric arc into the arc extinguishing chamber for arc extinguishing.

[0033] The contactor housing 1 has stationary contact plates 11 fixedly connected to both sides of the inner wall, and a stationary contact block 12 fixedly connected to the top of the stationary contact plate 11. The stationary contact block 12 and the moving contact block 207 are located in the same vertical direction.

[0034] The contactor housing 1 has grooves 13 on both sides, and the movable plate 241 passes through the grooves 13 and is slidably connected to the grooves 13.

[0035] When the coil is energized, the movable plate 241 contacts the bottom of the inner wall of the slide 13; when the coil is de-energized, the movable plate 241 contacts the top of the inner wall of the slide 13.

[0036] Working principle and usage process of this utility model:

[0037] The contactor coil is a common existing technology and will not be described in detail in this application. It is not shown in the attached drawings. When the coil is energized, the moving armature 210 and the stationary armature 211 generate magnetism. The moving armature 210 moves downward, thereby driving the moving contact plate 206 to move downward, which in turn causes the moving contact block 207 to contact the stationary contact block 12, thus realizing the circuit connection. When the coil is de-energized, the support plate 201 loses magnetism. Under the elastic force of the spring 223, the top plate 203 drives the moving armature 210 to move upward. At the same time, the moving contact plate 206 drives the moving contact block 207 to move upward and separate from the stationary contact block 12, thus realizing the circuit disconnection.

[0038] When a product malfunctions, the moving armature 210 and the stationary armature 211 may not engage properly, leading to poor contact or no contact between the moving contact block 207 and the stationary contact block 12. By manually pressing the control block 208, the moving contact block 207 and the stationary contact block 12 can be stably contacted. At the same time, the fixed plate 204 drives the movable plate 241 to move vertically downward along the inner side of the slide groove 13, inserting the plug rod 302 into the inner side of the fault socket 102. The plug rod 302 is placed on top of the movable plate 241, thereby preventing the fixed plate 204 and the movable plate 241 from moving upward, achieving forced contact between the moving contact block 207 and the stationary contact block 12, and keeping the contactor circuit connected.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small contactor, comprising a contactor housing (1), characterized in that: A fixed housing (101) is fixedly connected to the outer side of the contactor housing (1). A movable component (2) is installed on the inner side of the contactor housing (1). Fault insertion holes (102) and placement holes (103) are provided on both sides of the fixed housing (101). A fault key (3) is installed on the side of the fixed housing (101). The movable component (2) includes two support plates (201) fixedly connected to the inner wall of the contactor housing (1). A spring component (202) is installed on the top of the support plate (201). A top plate (203) is fixedly installed on the top of the spring component (202). Fixed plates (204) are fixedly connected to both sides of the bottom of the top plate (203). A movable plate (241) is fixedly connected to the side of the fixed plate (204), a connecting post (205) is fixedly connected to the top of the top plate (203), a moving contact plate (206) is fixedly connected to the top of the connecting post (205), a control block (208) is fixedly connected to the top of the moving contact plate (206), the control block (208) is movably sleeved with the top of the contactor housing (1), a moving armature (210) is fixedly connected to the middle of the bottom of the top plate (203), a stationary armature (211) is fixedly connected to the bottom of the inner wall of the contactor housing (1), and the fault key (3) includes a control plate (301) and two plug rods (302) fixedly connected to the side of the control plate (301).

2. A miniature contactor according to claim 1, characterized in that: External terminals (104) are installed on both sides of the contactor housing (1), and coil terminals (105) are installed on the front of the contactor housing (1).

3. A miniature contactor according to claim 1, characterized in that: The insertion rod (302) is compatible with the fault insertion hole (102) and the placement hole (103), and the distance between the two placement holes (103) is the same as the distance between the two insertion rods (302).

4. A miniature contactor according to claim 1, characterized in that: The elastic component (202) includes a cylindrical tube (221) fixedly connected to the top of the support plate (201), a cylindrical rod (222) movably sleeved on the top of the cylindrical tube (221), a spring (223) sleeved on the outside of the cylindrical tube (221), and the top of the cylindrical rod (222) fixedly connected to the bottom of the top plate (203).

5. A miniature contactor according to claim 1, characterized in that: Movable contact blocks (207) are fixedly connected to both sides of the bottom of the movable contact plate (206), and the two ends of the movable contact plate (206) are bent and raised.

6. A miniature contactor according to claim 1, characterized in that: The contactor housing (1) has stationary contact plates (11) fixedly connected to both sides of its inner wall. A stationary contact block (12) is fixedly connected to the top of the stationary contact plate (11). The stationary contact block (12) and the moving contact block (207) are located in the same vertical direction.

7. A miniature contactor according to claim 1, characterized in that: The contactor housing (1) has sliding grooves (13) on both sides, and the movable plate (241) passes through the sliding grooves (13). The movable plate (241) is slidably sleeved with the sliding grooves (13).

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