Flat plate type contactor

Abstract

The utility model relates to the technical field of electric appliance systems, in particular to a flat plate type contactor, which comprises a shell, an electromagnetic driving device is arranged in the shell, a circuit conversion device is fixedly arranged at one end of the electromagnetic driving device, a cover plate is fixedly connected to the end part of the shell, and the cover plate is used for crimping the electromagnetic driving device and the circuit conversion device; the circuit conversion device comprises a lining plate, one end of the lining plate is fixedly connected with the electromagnetic driving device, two groups of normally open contacts and two groups of normally closed contacts are respectively arranged on two opposite sides of the lining plate, and the two groups of normally open contacts are both positioned on one side close to the electromagnetic driving device; according to the utility model, the static contact in the contactor can be independently disassembled through the first pin installed outside the shell, and the first pin and the static contact can be taken out from the interior of the shell only by disassembling the screw for fixing the first pin, so that the whole contactor does not need to be opened for replacement and maintenance; the labor intensity can be reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical systems, and particularly relates to a flat contactor. Background Art

[0002] Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC), and they are applied to power, power distribution and power utilization. In a broad sense, a contactor refers to an electrical appliance in industrial electricity that uses a coil to pass an electric current to generate a magnetic field, so that the contact closes to control the load.

[0003] However, in order to enhance the contact stability between the moving and static auxiliary contacts, the static auxiliary contacts of the current contactor are usually fixedly installed inside the housing; when a certain group of static auxiliary contacts is damaged, the whole contactor needs to be opened for disassembly and replacement, and then reassembled, which increases the labor intensity and maintenance cost. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flat contactor, which mainly solves the technical problems proposed in the prior art.

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

[0006] A flat contactor includes a housing, an electromagnetic driving device is arranged inside the housing, a line conversion device is fixedly arranged at one end of the electromagnetic driving device, a cover plate is fixedly connected to the end of the housing, and the cover plate is used for pressing the electromagnetic driving device and the line conversion device;

[0007] The line conversion device includes a lining plate, one end of the lining plate is fixedly connected to the electromagnetic driving device, two groups of normally open contacts and two groups of normally closed contacts are respectively arranged on the opposite sides of the lining plate, and both groups of normally open contacts are located on the side close to the electromagnetic driving device, and both groups of normally closed contacts are located on the side far from the electromagnetic driving device;

[0008] Each group of the normally open contacts and the normally closed contacts includes a moving contact and a static contact. The four moving contacts are all fixedly connected to the lining plate, and the four static contacts respectively correspond to the four moving contacts one by one. First pins are fixedly connected to the sides of the four static contacts far from the moving contacts, and the four moving contacts are all connected with second pins through leads, and the second pins are fixedly installed on the top of the cover plate;

[0009] One end of the cover plate away from the housing is provided with a first-level rectangular groove, the bottom end of the inner wall of the first-level rectangular groove is provided with multiple groups of second-level rectangular grooves, the bottom end of the inner wall of each group of second-level rectangular grooves is provided with a T-shaped groove, the first pin is inserted into the T-shaped groove, and the static contact is matched with the inner wall of the T-shaped groove;

[0010] The bottom end of the inner wall of the second-level rectangular groove and on one side of the T-shaped groove is provided with a screw hole, the top end of the first pin is provided with a first-level screw, and the bottom end of the first-level screw penetrates and extends out of the lower surface of the first pin and is screwed with the inner wall of the screw hole.

[0011] Preferably, the electromagnetic driving device includes a static iron core, the structure of the static iron core is in a loop shape, through holes are provided on both opposite sides of the static iron core, one end of the static iron core is sleeved with a fixed rod, one end of the fixed rod extends to the outside of the static iron core and is fixedly connected with a bottom plate, and the static iron core is fixedly connected with the bottom plate, and one end of the bottom plate away from the static iron core is detachably connected with the inner wall of the housing;

[0012] The other end of the static iron core is sleeved with a movable shaft, the movable shaft is slidably connected with the inner wall of the static iron core, one end of the movable shaft extends to the outside of the static iron core and is fixedly connected with a movable iron core, and one end of the movable iron core away from the static iron core is fixedly connected with the lining plate;

[0013] The outer surface of the static iron core is wound with a coil, one end of the coil is connected with a T-pole wiring board, the other end of the coil is connected with an L-pole wiring board, and the input ends of the T-pole wiring board and the L-pole wiring board are both located outside the housing.

[0014] Preferably, mounting parts are fixedly connected to the opposite surfaces of the fixed rod and the movable shaft, springs are sleeved on the outer surfaces of the two mounting parts, and the two ends of the springs are respectively fixedly connected to the opposite surfaces of the fixed rod and the movable shaft.

[0015] Preferably, two mounting grooves are provided on the top end of the housing and near one side of the bottom plate, and second-level positioning rods are fixedly connected to the bottom ends of the inner walls of the two mounting grooves;

[0016] Two mounting pieces are fixedly connected to one end of the bottom plate away from the static iron core, the two mounting pieces are respectively adapted to the second-level positioning rods, the top ends of the second-level positioning rods penetrate through the top ends of the mounting pieces and are screwed with second-level screws, the second-level screws are used for pressing the mounting pieces, and the top ends of the second-level screws are flush with the top ends of the mounting grooves.

[0017] Preferably, first-stage positioning rods are fixedly connected to the top of the housing at the four corners. Countersunk bolt holes are provided at the top of the cover plate at the four corners. The first-stage positioning rods are sleeved in the countersunk bolt holes, and third-stage screws are screwed on the inner wall of the first-stage positioning rods at the top of the countersunk bolt holes.

[0018] Preferably, an arc extinguishing cover is provided below the bottom end of the housing and below the line conversion device.

[0019] Preferably, C-shaped plates are fixedly connected to the opposite sides of the inner wall of the housing relative to the first pin. The inner wall of the C-shaped plate is slidably connected to the outer surface of the first pin.

[0020] Preferably, anti-blocking parts are provided on the opposite sides of the inner wall of the housing, and one side of each of the two anti-blocking parts abuts against one side of the coil away from the bottom plate.

[0021] Preferably, eight U-shaped wire passing holes are provided on the inner wall of the first-stage rectangular groove on the side away from the electromagnetic driving device.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0023] 1. In the present utility model, the static contact in the contactor can be separately disassembled through the first pin installed outside the housing. During the disassembly process, only the first-stage screw fixing the first pin needs to be disassembled, and then the first pin and the static contact can be taken out from the inside of the housing, so that it is not necessary to open the whole contactor for replacement and maintenance, which can reduce the labor intensity and maintenance cost.

[0024] 2. In the present utility model, the contactor is fixedly installed on the cover plate and the electromagnetic driving device by setting a plurality of positioning rods and cooperating with screw pressing, which simplifies the overall installation difficulty; moreover, the contactor is designed as a flat structure, which can reduce the installation occupation space and is convenient for horizontal installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 is the front three-dimensional view of the flat contactor of the present utility model;

[0027] Figure 2 is the back three-dimensional view of the flat contactor of the present utility model;

[0028] Figure 3 In the present utility model Figure 1 Schematic structural view of the structure with the cover plate removed;

[0029] Figure 4 In the present utility model Figure 1 Exploded view.

[0030] In the figure: housing 1, primary positioning rod 101, mounting groove 102, secondary positioning rod 103, resisting portion 104, C-shaped plate 105, cover plate 2, countersunk bolt hole 21, primary rectangular groove 22, secondary rectangular groove 221, T-shaped groove 2211, screw hole 2212, wire threading groove 23, electromagnetic driving device 3, bottom plate 31, mounting piece 311, fixing rod 312, static iron core 32, movable shaft 33, spring 34, movable iron core 35, mounting portion 36, coil 37, line conversion device 4, lining plate 41, moving contact 411, normally open contact 42, normally closed contact 43, first pin 44, static contact 441, second pin 45, arc extinguishing cover 5, primary screw 6, secondary screw 7, tertiary screw 8, L-pole wiring board 9, T-pole wiring board 10. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] Such as Figures 1-4As shown in the figure, the utility model provides a flat contactor, which includes a housing 1. An electromagnetic driving device 3 is arranged inside the housing 1. A circuit conversion device 4 is fixedly arranged at one end of the electromagnetic driving device 3. A cover plate 2 is fixedly connected to the end of the housing 1. The cover plate 2 is used to press the electromagnetic driving device 3 and the circuit conversion device 4. The circuit conversion device 4 includes a lining plate 41. One end of the lining plate 41 is fixedly connected to the electromagnetic driving device 3. Two groups of normally open contacts 42 and two groups of normally closed contacts 43 are respectively arranged on the opposite sides of the lining plate 41. And the two groups of normally open contacts 42 are both located on the side close to the electromagnetic driving device 3, and the two groups of normally closed contacts 43 are both located on the side far from the electromagnetic driving device 3. Each group of normally open contacts 42 and normally closed contacts 43 includes a moving contact 411 and a static contact 441. The four moving contacts 411 are all fixedly connected to the lining plate 41. And the four static contacts 441 respectively correspond to the four moving contacts 411 one by one. A first pin 44 is fixedly connected to the side of the four static contacts 441 far from the moving contacts 411. The four moving contacts 411 are all connected with a second pin 45 through a lead. And the second pin 45 is fixedly installed at the top end of the cover plate 2. An upper rectangular groove 22 is opened at the end of the cover plate 2 far from the housing 1. A plurality of lower rectangular grooves 221 are opened at the bottom end of the inner wall of the upper rectangular groove 22. A T-shaped groove 2211 is opened at the bottom end of the inner wall of each of the plurality of lower rectangular grooves 221. The first pin 44 is inserted into the T-shaped groove 2211. And the static contact 441 matches the inner wall of the T-shaped groove 2211. A screw hole 2212 is opened at the bottom end of the inner wall of the lower rectangular groove 221 and on one side of the T-shaped groove 2211. An upper screw 6 is arranged at the top end of the first pin 44. The bottom end of the upper screw 6 penetrates through the lower surface of the first pin 44 and is screwed with the inner wall of the screw hole 2212.

[0033] Among them, when the contactor is in use, according to the needs of the user, the load circuit can be connected to the corresponding pins of the normally open contacts 42 and normally closed contacts 43 by means of screw pressing. Then, the electromagnetic driving device 3 is used to switch the working states of the normally open contacts 42 and normally closed contacts 43, so as to control the on and off of the load circuit. When one of the static contacts 441 in the contactor is damaged, the upper screw 6 at the corresponding contact position can be disassembled. Then, the first pin 44 is pulled out from the lower rectangular groove 221, so that the first pin 44 takes out the damaged static contact 441 from the T-shaped groove 2211. After cleaning, maintaining or replacing the damaged static contact 441, the static contact 441 with good conductivity is inserted back into the housing 1 through the T-shaped groove 2211 through the first pin 44. And the first pin 44 is embedded into the lower rectangular groove 221. Finally, the first pin 44 is fixed by the upper screw 6. Therefore, it is not necessary to open the whole contactor for replacement and maintenance, which can reduce the labor intensity and maintenance cost.

[0034] Furthermore, the electromagnetic drive device 3 includes a static iron core 32, the structure of the static iron core 32 is set in a circular shape, through holes are opened on opposite sides of the static iron core 32, one end of the static iron core 32 is sleeved with a fixing rod 312, one end of the fixing rod 312 extends to the outside of the static iron core 32 and is fixedly connected to the bottom plate 31, and the static iron core 32 is fixedly connected to the bottom plate 31, and the end of the bottom plate 31 away from the static iron core 32 is detachably connected to the inner wall of the shell 1; the other end of the static iron core 32 is sleeved with a movable shaft 33, the movable shaft 33 is slidably connected to the inner wall of the static iron core 32, one end of the movable shaft 33 extends to the outside of the static iron core 32 and is fixedly connected to the moving iron core 35, and the end of the moving iron core 35 away from the static iron core 32 is fixedly connected to the lining plate 41; the outer surface of the static iron core 32 is wound with a coil 37, one end of the coil 37 is connected to the T-pole terminal board 10, and the other end of the coil 37 is connected to the L-pole terminal board 9, and the input ends of the T-pole terminal board 10 and the L-pole terminal board 9 are both located outside the shell 1.

[0035] Before using the contactor, the T-pole terminal board 10 and the L-pole terminal board 9 are first connected to the main line in the circuit respectively to control the power supply of the coil 37; when the coil 37 is energized, the current in the coil 37 generates a magnetic field, and the generated magnetic field causes the static iron core 32 to generate an electromagnetic attraction to attract the moving iron core 35, and then the moving iron core 35 drives the movable shaft 33 to slide along the inner wall of the static iron core 32, so that the normally open contact 42 is closed and the normally closed contact 43 is disconnected, and the circuit is connected.

[0036] Furthermore, the opposite surfaces of the fixed rod 312 and the movable shaft 33 are fixedly connected with mounting parts 36, and the outer surfaces of the two sets of mounting parts 36 are sleeved with springs 34, and the two ends of the spring 34 are respectively fixedly connected with the opposite surfaces of the fixed rod 312 and the movable shaft 33; when the coil 37 is energized, under the action of electromagnetic attraction, the movable shaft 33 will move to the side close to the fixed rod 312 and compress the spring 34, so that the spring 34 accumulates force; when the coil 37 is de-energized, the electromagnetic attraction disappears, and then under the action of the elastic restoring force of the spring 34, the movable shaft 33 is ejected to the side away from the fixed rod 312, so that the movable shaft 33 drives the moving iron core 35 to reset, thereby disconnecting the normally open contact 42 and closing the normally closed contact 43, and disconnecting the circuit.

[0037] Furthermore, two groups of mounting grooves 102 are provided at the top of the shell 1 and on one side close to the base plate 31, and the bottom ends of the inner walls of the two groups of mounting grooves 102 are fixedly connected with secondary positioning rods 103; two groups of mounting plates 311 are fixedly connected with one end of the base plate 31 away from the static iron core 32, and the two groups of mounting plates 311 are respectively adapted to the secondary positioning rods 103, and the top end of the secondary positioning rod 103 passes through the top end of the mounting plate 311 and is screwed with a secondary screw 7, which is used to crimp the mounting plate 311, and the top end of the secondary screw 7 is flush with the top end of the mounting groove 102.

[0038] Among them, during the assembly process, first place the electromagnetic driving device 3 into the housing 1, sleeved the two groups of mounting pieces 311 on the secondary positioning rods 103 respectively, and then screw the secondary screw 7 into the secondary fixing rod 312 to press and connect the mounting pieces 311, then the positioning and installation of the electromagnetic driving device 3 can be completed, which can simplify the installation difficulty, facilitate the disassembly and maintenance of the moving contact 411 in the later stage, and achieve rapid assembly.

[0039] Furthermore, first-stage positioning rods 101 are fixedly connected to the top of the housing 1 at the four corners, and countersunk bolt holes 21 are provided at the top of the cover plate 2 at the four corners. The first-stage positioning rods 101 are sleeved in the countersunk bolt holes 21, and a third-stage screw 8 is screwed on the inner wall of the first-stage positioning rod 101 at the top of the countersunk bolt hole 21; during the assembly process, the first-stage positioning rods 101 can be inserted into the countersunk bolt holes 21 from the bottom end of the cover plate 2, and then the third-stage screws 8 are screwed into the first-stage positioning rods 101 from the top end of the cover plate 2 to lock the first-stage positioning rods 101, then the rapid installation of the housing 1 and the cover plate 2 can be realized.

[0040] Furthermore, an arc extinguishing cover 5 is arranged at the bottom end of the housing 1 and below the line conversion device 4; during the use of this contactor, the arc can be made to contact the solid medium through the arc extinguishing cover 5, which can reduce the arc temperature, thereby accelerating the arc extinction, and can play a certain protective role for the electrical components inside the contactor and extend the service life of this contactor.

[0041] C-shaped plates 105 are fixedly connected to the inner wall of the housing 1 on the opposite sides of the first pin 44, and the inner wall of the C-shaped plates 105 is slidably connected to the outer surface of the first pin 44; the bottom end of the first pin 44 extends between the two C-shaped plates 105, which can enhance the stability of the static contact 441 during use.

[0042] Furthermore, anti-blocking parts 104 are arranged on the opposite sides of the inner wall of the housing 1, and one sides of the two anti-blocking parts 104 are respectively abutted against the side of the coil 37 far from the bottom plate 31; it is convenient to position and install the coil 37.

[0043] Furthermore, U-shaped wire passing grooves 23 are provided on the inner wall of the first rectangular groove 22 on one side of the second rectangular groove 221; when wiring, the external lead can be embedded into the U-shaped wire passing grooves 23 to keep the top end of the cover plate 2 flush, which is convenient for installation and placement.

[0044] In the present utility model, the static contact 441 in the contactor can be separately disassembled through the first pin 44 installed at the top end of the cover plate 2. During the disassembly process, only the first-level screw 6 fixing the first pin 44 needs to be removed, and then the first pin 44 and the static contact 441 can be taken out from the inside of the housing 1. Thus, it is not necessary to open the whole contactor for replacement and maintenance, which can reduce the labor intensity and maintenance cost. At the same time, the contactor is fixedly installed on the cover plate 2 and the electromagnetic driving device 3 by setting a plurality of positioning rods in cooperation with screw crimping, which simplifies the overall installation difficulty and facilitates the replacement and maintenance of the moving contact 411 in the later stage. Moreover, the contactor is designed as a flat plate structure, which can reduce the installation space occupied and is convenient for horizontal installation.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. Flat plate contactor, characterized in that: The invention comprises a shell (1), wherein an electromagnetic drive device (3) is arranged inside the shell (1), a line conversion device (4) is fixedly arranged at one end of the electromagnetic drive device (3), and a cover plate (2) is fixedly connected to the end of the shell (1), and the cover plate (2) is used for crimping the electromagnetic drive device (3) and the line conversion device (4); The line conversion device (4) comprises a lining plate (41), one end of the lining plate (41) is fixedly connected to the electromagnetic drive device (3), two groups of normally open contacts (42) and two groups of normally closed contacts (43) are respectively arranged on opposite sides of the lining plate (41), and the two groups of normally open contacts (42) are both located on a side close to the electromagnetic drive device (3), and the two groups of normally closed contacts (43) are both located on a side away from the electromagnetic drive device (3); Each group of the normally open contacts (42) and the normally closed contacts (43) comprises a group of moving contacts (411) and a group of static contacts (441); the four groups of moving contacts (411) are fixedly connected to the lining plate (41), and the four groups of static contacts (441) correspond to the four groups of moving contacts (411) one by one; the four groups of static contacts (441) are fixedly connected to a first pin (44) on a side away from the moving contacts (411); the four groups of moving contacts (411) are connected to a second pin (45) via a lead wire, and the second pin (45) is fixedly mounted on the top of the cover plate (2); A primary rectangular groove (22) is provided at one end of the cover plate (2) away from the housing (1); a plurality of groups of secondary rectangular grooves (221) are provided at the bottom end of the inner wall of the primary rectangular groove (22); a T-shaped groove (2211) is provided at the bottom end of the inner wall of the plurality of groups of secondary rectangular grooves (221); the first pin (44) is inserted into the T-shaped groove (2211), and the static contact (441) matches the inner wall of the T-shaped groove (2211); A screw hole (2212) is provided at the bottom end of the inner wall of the secondary rectangular groove (221) and located on one side of the T-shaped groove (2211); a primary screw (6) is provided at the top end of the first pin (44); the bottom end of the primary screw (6) penetrates through the lower surface of the first pin (44) and is screwed to the inner wall of the screw hole (2212).

2. The flat plate contactor according to claim 1, characterized in that: The electromagnetic drive device (3) comprises a static iron core (32), the structure of the static iron core (32) is arranged in a circular shape, through holes are provided on opposite sides of the static iron core (32), one end of the static iron core (32) is sleeved with a fixing rod (312), one end of the fixing rod (312) extends to the outside of the static iron core (32) and is fixedly connected to a bottom plate (31), and the static iron core (32) is fixedly connected to the bottom plate (31), and one end of the bottom plate (31) away from the static iron core (32) is detachably connected to the inner wall of the shell (1); The other end of the static iron core (32) is sleeved with a movable shaft (33), the movable shaft (33) is slidably connected to the inner wall of the static iron core (32), one end of the movable shaft (33) extends to the outside of the static iron core (32) and is fixedly connected to a movable iron core (35), and one end of the movable iron core (35) away from the static iron core (32) is fixedly connected to the lining plate (41); A coil (37) is wound around the outer surface of the static iron core (32); one end of the coil (37) is connected to a T-pole terminal board (10); the other end of the coil (37) is connected to an L-pole terminal board (9); and the input ends of the T-pole terminal board (10) and the L-pole terminal board (9) are both located outside the housing (1).

3. The flat plate contactor according to claim 2, characterized in that: The opposite surfaces of the fixed rod (312) and the movable shaft (33) are fixedly connected with mounting parts (36), and the outer surfaces of the two groups of mounting parts (36) are sleeved with springs (34), and the two ends of the springs (34) are respectively fixedly connected with the opposite surfaces of the fixed rod (312) and the movable shaft (33).

4. The flat plate contactor according to claim 2, characterized in that: Two groups of mounting grooves (102) are provided at the top of the housing (1) and on one side close to the bottom plate (31), and the bottom ends of the inner walls of the two groups of mounting grooves (102) are fixedly connected with secondary positioning rods (103); Two groups of mounting plates (311) are fixedly connected to one end of the base plate (31) away from the static iron core (32), and the two groups of mounting plates (311) are respectively matched with the secondary positioning rod (103), and the top end of the secondary positioning rod (103) passes through the top end of the mounting plate (311) and is screwed with a secondary screw (7), and the secondary screw (7) is used to press the mounting plate (311), and the top end of the secondary screw (7) is flush with the top end of the mounting groove (102).

5. The flat plate contactor according to claim 1, characterized in that: The top of the shell (1) and the four corners are fixedly connected with a first-level positioning rod (101), the top of the cover plate (2) and the four corners are provided with countersunk bolt holes (21), the first-level positioning rod (101) is sleeved in the countersunk bolt hole (21), and the inner wall of the first-level positioning rod (101) and the top of the countersunk bolt hole (21) are screwed with a third-level screw (8).

6. The flat plate contactor according to claim 1, characterized in that: An arc extinguishing cover (5) is provided at the bottom end of the housing (1) and below the line conversion device (4).

7. The flat plate contactor according to claim 1, characterized in that: A C-shaped plate (105) is fixedly connected to the inner wall of the housing (1) and located on opposite sides of the first pin (44), and the inner wall of the C-shaped plate (105) is slidably connected to the outer surface of the first pin (44).

8. The flat plate contactor according to claim 2, characterized in that: Relative sides of the inner wall of the shell (1) are provided with stoppers (104), and one side of two groups of the stoppers (104) respectively abuts against a side of the coil (37) away from the bottom plate (31).

9. The flat plate contactor according to claim 1, characterized in that: Eight groups of U-shaped threading holes (23) are provided on the inner wall of the primary rectangular groove (22) and on a side away from the electromagnetic drive device (3).

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