Synchronous switching ac-dc contactor with signal switching

Abstract

The application relates to the technical field of contactors and discloses a synchronous switching AC / DC contactor with signal switching, which comprises a shell, a first static contact piece and a second static contact piece arranged in the shell, a moving contact piece slidingly connected in the shell, an electromagnetic assembly arranged in the shell, a fixed shell arranged on the shell, a first signal plate and a second signal plate arranged in the fixed shell, a driving assembly slidingly connected in the fixed shell, and a fixing rod arranged on the electromagnetic assembly; when a power supply is in a direct current state, the driving assembly abuts against the first signal plate; when the power supply is in an alternating current state, the driving assembly abuts against the second signal plate; when the power supply is switched between the direct current state and the alternating current state, the fixing rod drives the driving assembly to move, the driving assembly abuts against the first signal plate and the second signal plate respectively to display different states of the power supply, and a worker can directly observe whether the power supply is in the direct current state or the alternating current state, thereby bringing great convenience to the worker.

Description

Technical Field

[0001] This application relates to the technical field of contactors, and in particular to a synchronous switching AC / DC contactor with signal switching. Background Technology

[0002] A contactor is an electrical device widely used in industrial automation and power control. It is mainly used to frequently and remotely connect or disconnect the main circuit or a high-capacity control circuit. Its core function is to generate a magnetic field through an electromagnetic coil to drive the contacts to move, thereby controlling the load.

[0003] In related technologies, the contactor includes a housing, within which a first stationary contact and a second stationary contact are disposed, and a moving contact is slidably connected within the housing; when the moving contact abuts against the first stationary contact, the power supply is switched to DC power; when the moving contact abuts against the second stationary contact, the power supply is switched to AC power.

[0004] Currently, most common contactors do not have signal switching functions and cannot display the real-time power status. This requires manual observation to determine whether the power supply has been successfully switched on or off, causing considerable inconvenience to staff. Utility Model Content

[0005] To improve the lack of signal switching functionality in contactors, this application provides a synchronous switching AC / DC contactor with signal switching capabilities.

[0006] This application provides a synchronous switching AC / DC contactor with signal switching, which adopts the following technical solution: A synchronous switching AC / DC contactor with signal switching includes a housing, within which are a first stationary contact and a second stationary contact. A movable contact is slidably connected within the housing. An electromagnetic assembly is also located within the housing, capable of driving the movable contact to abut against either the first or second stationary contact. A fixed shell is mounted on the housing, within which are a first signal plate and a second signal plate. A drive assembly is slidably connected within the fixed shell. A fixed rod is mounted on the electromagnetic assembly, used to move the drive assembly. When the power supply is DC, the drive assembly abuts against the first signal plate; when the power supply is AC, the drive assembly abuts against the second signal plate.

[0007] By adopting the above technical solution, when the power supply switches between DC and AC states, the first signal board and the second signal board are provided inside the fixed housing. The fixed rod drives the drive component to move, and the drive component abuts against the first signal board and the second signal board respectively to display the different states of the power supply. The staff can directly observe whether the power supply is in DC or AC state, which brings great convenience to the staff.

[0008] Optionally, the driving assembly includes a driving block and a contact piece. The driving block is slidably connected to the fixed housing and has a limiting groove for the contact piece to be inserted. When the current is in a DC state, the fixed rod drives the driving block to move towards the contact piece, and the contact piece abuts against the first signal piece.

[0009] By adopting the above technical solution, when the current is in a DC state, the fixed block drives the driving block to move towards the contact piece, so that the fixed block can drive the contact piece to abut against the first signal piece, thereby realizing the switching of signal function.

[0010] Optionally, a first spring is provided inside the fixed shell, a connecting groove for inserting the first spring is provided on the contact piece, and a connecting hole for inserting the end of the first spring is provided on the contact piece. The first spring is used to drive the contact piece to move.

[0011] By adopting the above technical solution, the contact piece is moved by the first spring, so that the contact piece can rotate between the first signal piece and the second signal piece through the deformation of the contact piece, thereby realizing the switching of AC / DC contactor signal function.

[0012] Optionally, a second spring is provided inside the fixed housing, and a fixing groove for inserting the second spring is provided on the moving rod, with the second spring abutting against the inner wall of the fixing groove away from the driving block.

[0013] By adopting the above technical solution, the second spring abuts against the inner wall of the fixing groove away from the drive block, enabling the second spring to drive the moving rod to move. The second spring can also help the moving rod to reset, thereby making the overall structure of the contactor more stable.

[0014] Optionally, the movable rod has a groove for inserting a contact piece, the groove being used to fix the contact piece.

[0015] By adopting the above technical solution, a groove is provided on the moving rod for the contact piece to be inserted, so that the contact piece can be fixed in the groove. The groove can provide space for the rotation of the contact piece, allowing the contact piece to rotate smoothly with the movement of the moving rod, thereby realizing the switching of AC / DC contactor signals.

[0016] Optionally, the fixing shell includes a first shell and a second shell, the first shell is fixedly connected to the second shell, the fixing shell is provided with fasteners, and both the first shell and the second shell are provided with through holes for fasteners to be inserted; when the fasteners pass through the through holes on the first shell and the second shell in sequence, the first shell and the second shell are fixed.

[0017] By adopting the above technical solution, the first and second shells can be fixed to each other by fasteners passing through the through holes on the first and second shells in sequence, reducing the possibility of the first and second shells separating.

[0018] Optionally, the first shell is provided with a connector block, and the second shell is provided with a connector slot for inserting the connector block; when the connector block is inserted into the connector slot, the through holes on the first shell and the through holes on the second shell are aligned.

[0019] By adopting the above technical solution, when the connector block is inserted into the connector slot, the first shell and the second shell are fixed to each other. The operator can splice the first shell and the second shell without fixing it with bolts, which saves the operator's operation steps and provides convenience for the operator to install and fix the shell.

[0020] Optionally, the first shell is provided with multiple limiting rods, and the second shell is provided with multiple limiting holes for the limiting rods to be inserted. When the limiting rods are inserted into the limiting holes, the first shell and the second shell are pre-fixed.

[0021] By adopting the above technical solution, the first shell and the second shell can be pre-fixed by inserting the limiting rod into the limiting hole. The workers can splice the first shell and the second shell together without going through complicated bolt fixing steps, which provides convenience for subsequent installation steps and makes it easier for workers to install the fixed shell.

[0022] Optionally, a rotating plate is rotatably connected to the second shell, and a locking block is provided on the rotating plate. The first shell has a slot for the locking block to be inserted into the slot. When the locking block is inserted into the slot, the first shell and the second shell are fixed together.

[0023] By adopting the above technical solution, after the workers pre-fix the first shell and the second shell, they can insert the locking block into the slot by rotating the rotating plate to fix the first shell and the second shell, reducing the possibility of separation of the first shell and the second shell. The workers can assemble the first shell and the second shell without installing bolts, reducing the number of operation steps for the workers and providing convenience for the workers to install the shell.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When the power supply switches between DC and AC states, a first signal board and a second signal board are provided inside the fixed housing. The fixed rod drives the drive assembly to move, and the drive assembly abuts against the first signal board and the second signal board respectively to display the different states of the power supply. The staff can directly observe whether the power supply is in DC or AC state, which brings great convenience to the staff.

[0025] 2. When the current is in DC state, the fixed block drives the driving block to move towards the contact piece, so that the fixed block can drive the contact piece to abut against the first signal piece, thereby realizing the switching of signal function. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Example 1; Figure 2 It is Example 1 Figure 1 Sectional view along line AA; Figure 3 This is a partial structural diagram highlighting the contact piece in Example 1; Figure 4 It is Example 1 Figure 1 A partial sectional view along line BB; Figure 5 This is a structural schematic diagram of Example 2; Figure 6 This is a partial exploded view of the limiting rod in Example 2; Figure 7 This is a partial exploded view of the limiting hole in Example 2.

[0027] Reference numerals: 1. Housing; 11. First stationary contact piece; 12. Second stationary contact piece; 13. Moving contact; 14. Electromagnetic assembly; 141. Fixing rod; 2. Fixing shell; 21. First shell; 211. Through hole; 212. Connecting block; 213. Limiting rod; 214. Slot; 22. Second shell; 221. Connecting slot; 222. Limiting hole; 223. Rotating plate; 224. Locking block; 23. First signal plate; 231. Signal contact; 24. Second signal plate; 25. Through hole; 26. First spring; 27. Placement slot; 271. Second spring; 28. Fastener; 3. Drive assembly; 31. Drive block; 32. Contact piece; 321. Connecting slot; 322. Connecting hole; 33. Fixing hole; 34. Fixing plate; 341. Groove; 342. Inclined surface; 343. Fixing groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0029] Example 1 This embodiment discloses a synchronous switching AC / DC contactor with signal switching. (Refer to...) Figure 1 and Figure 2 A synchronous switching AC / DC contactor with signal switching includes a housing 1. A first stationary contact 11 and a second stationary contact 12 are fixedly connected inside the housing 1. The first stationary contact 11 and the second stationary contact 12 are arranged parallel to each other, and the first stationary contact 11 is located on the side of the second stationary contact 12 away from the ground.

[0030] Reference Figure 2 A movable contact 13 is slidably connected inside the housing 1. The movable contact 13 is located between the first stationary contact piece 11 and the second stationary contact piece 12, and is used to abut against the first stationary contact piece 11 or the second stationary contact piece 12. An electromagnetic component 14 is slidably connected inside the housing 1, and is used to drive the movable contact 13 to abut against the first stationary contact piece 11 or the second stationary contact piece 12.

[0031] Reference Figure 2 A fixed shell 2 is provided on the outer surface of the housing 1. A first signal plate 23 and a second signal plate 24 are fixedly connected inside the fixed shell 2. There are two of each of the first signal plate 23 and the second signal plate 24. The two first signal plates 23 are arranged in parallel to the two corresponding second signal plates 24. The first signal plate 23 is located on the side of the second signal plate 24 away from the housing 1.

[0032] Reference Figure 2 The side of the fixed housing 2 has a through hole 25 for the first signal plate 23 and the second signal plate 24 to pass through, and the first signal plate 23 and the second signal plate 24 both extend out of the corresponding through hole 25. Signal contacts 231 are fixedly connected to both the first signal plate 23 and the second signal plate 24, and the signal contacts 231 on the first signal plate 23 and the signal contacts 231 on the second signal plate 24 are arranged symmetrically to each other.

[0033] Reference Figure 2 A drive assembly 3 is slidably connected inside the fixed housing 2. A fixed rod 141 is fixedly connected to the electromagnetic assembly 14. The fixed rod 141 can drive the drive assembly 3 to move along the height direction of the housing 1. The drive assembly 3 includes a drive block 31 and a contact piece 32. The drive block 31 is slidably connected inside the fixed housing 2 and is used to drive the contact piece 32 to rotate.

[0034] Reference Figure 2 and Figure 3 A fixing hole 33 is formed on the surface of the drive block 31 away from the fixing rod 141, and a fixing plate 34 is inserted into the fixing hole 33. A groove 341 for the contact piece 32 to be inserted is formed on the fixing plate 34, and opposing inclined surfaces 342 are formed on the groove wall of the groove 341. When the fixing rod 141 drives the drive block 31 to move closer to the fixing shell 2, the contact piece 32 can rotate closer to the first signal piece, and at this time the power supply switches from AC to DC.

[0035] Reference Figure 2 and Figure 3The fixed housing 2 is provided with a first spring 26, which is used to drive the contact piece 32 to move. The contact piece 32 has a connecting groove 321 for the first spring 26 to be inserted, and two connecting holes 322 for the ends of the first spring 26 to be inserted. The connecting holes 322 are located on opposite sides of the connecting groove 321.

[0036] Reference Figure 2 and Figure 3 A fixing groove 343 is provided on the surface of the fixing plate 34 away from the housing 1. A second spring 271 is inserted into the fixing groove 343. A placement groove 27 for inserting the second spring 271 is provided in the fixing housing 2. The second spring 271 is used to drive the fixing plate 34 to move away from the fixing groove 343.

[0037] Reference Figure 1 and Figure 4 The fixed housing 2 includes a first housing 21 and a second housing 22. The first housing 21 is fixedly connected to the second housing 22. The fixed housing 2 is provided with fasteners 28, which are bolts. Both the first housing 21 and the second housing 22 have through holes 211 for inserting the fasteners 28. Multiple through holes 211 are provided. The operator inserts the fasteners 28 through the first housing 21 into the second housing 22 to achieve the bolted connection between the first housing 21 and the second housing 22.

[0038] Reference Figure 4 Two connector blocks 212 are fixedly connected to the first shell 21, and two slots 221 are provided on the second shell 22 for the connector blocks 212 to be inserted. When the connector blocks 212 are inserted into the slots 221, the first shell 21 and the second shell 22 are pre-fixed, which makes it easier for the operator to insert the fasteners 28 into the through holes 211 to fix the shell 2.

[0039] The implementation principle of Example 1 is as follows: when the current switches from AC to DC, the fixed block drives the driving block 31 to move towards the contact piece 32, so that the fixed block can drive the contact piece 32 to abut against the first signal piece, thereby realizing the switching of signal function.

[0040] Example 2 Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that a plurality of limiting rods 213 are fixedly connected to the surface of the first shell 21 near the second shell 22, and the limiting rods 213 are distributed along the circumference of the first shell 21.

[0041] Reference Figure 6 and Figure 7The second shell 22 has multiple limiting holes 222 on its surface near the first shell 21. The limiting holes 222 are used for the insertion of the limiting rod 213. When the limiting rod 213 is inserted into the corresponding limiting hole 222, the first shell 21 and the second shell 22 are pre-fixed.

[0042] Reference Figure 7 A rotating plate 223 is rotatably connected to the outer surface of the second shell 22, and a locking block 224 is fixedly connected to the rotating plate 223. A slot 214 for the locking block 224 to be inserted is provided on the first shell 21. When the locking block 224 is inserted into the slot 214, the first shell 21 and the second shell 22 are fixed together.

[0043] The implementation principle of Example 2 is as follows: The worker inserts the limiting rod 213 on the first shell 21 into the limiting hole 222 of the second shell 22 to pre-fix the first shell 21 and the second shell 22. Then, the rotating plate 223 is flipped and the card block 224 on the rotating plate 223 is inserted into the card slot 214 to fix the first shell 21 and the second shell 22.

[0044] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A synchronous switching AC / DC contactor with signal switching, comprising a housing (1), wherein a first stationary contact (11) and a second stationary contact (12) are provided inside the housing (1), a moving contact (13) is slidably connected inside the housing (1), and an electromagnetic assembly (14) is provided inside the housing (1), wherein the electromagnetic assembly (14) is capable of driving the moving contact (13) to abut against the first stationary contact (11) or the second stationary contact (12), characterized in that: The housing (1) is provided with a fixed shell (2), and the fixed shell (2) is provided with a first signal plate (23) and a second signal plate (24). The fixed shell (2) is slidably connected with a drive assembly (3). The electromagnetic assembly (14) is provided with a fixed rod (141), which is used to drive the drive assembly (3) to move. When the power supply is in DC state, the drive assembly (3) abuts against the first signal plate (23). When the power supply is in AC state, the drive assembly (3) abuts against the second signal plate (24).

2. The synchronous switching AC / DC contactor with signal switching according to claim 1, characterized in that: The driving assembly (3) includes a driving block (31) and a contact piece (32). The driving block (31) is slidably connected to the fixed shell (2). The driving block (31) has a limiting groove for the contact piece (32) to be inserted. When the current is in a DC state, the fixed rod (141) drives the driving block (31) to move toward the contact piece (32), and the contact piece (32) abuts against the first signal piece.

3. A synchronous switching AC / DC contactor with signal switching according to claim 2, characterized in that: The fixed shell (2) is provided with a first spring (26), the contact piece (32) is provided with a connecting groove (321) for the first spring (26) to be inserted, and the contact piece (32) is provided with a connecting hole (322) for the end of the first spring (26) to be inserted. The first spring (26) is used to drive the contact piece (32) to move.

4. A synchronous switching AC / DC contactor with signal switching according to claim 2, characterized in that: A fixing hole (33) is provided on the surface of the drive block (31) away from the fixing rod (141). A fixing plate (34) is inserted into the fixing hole (33). A fixing groove (343) is provided on the surface of the fixing plate (34) away from the housing (1). A second spring (271) is inserted into the fixing groove (343). The second spring (271) abuts against the inner wall of the fixing groove (343) away from the drive block (31).

5. A synchronous switching AC / DC contactor with signal switching according to claim 4, characterized in that: The fixing plate (34) has a groove (341) for inserting the contact piece (32), and the groove (341) is used to fix the contact piece (32).

6. A synchronous switching AC / DC contactor with signal switching according to claim 1, characterized in that: The fixed shell (2) includes a first shell (21) and a second shell (22). The first shell (21) is fixedly connected to the second shell (22). The fixed shell (2) is provided with fasteners (28). Both the first shell (21) and the second shell (22) are provided with through holes (211) for the fasteners (28) to be inserted. When the fasteners (28) pass through the through holes (211) on the first shell (21) and the second shell (22) in sequence, the first shell (21) and the second shell (22) are fixed.

7. A synchronous switching AC / DC contactor with signal switching according to claim 6, characterized in that: The first shell (21) is provided with a connector block (212), and the second shell (22) is provided with a connector slot (221) for inserting the connector block (212); when the connector block (212) is inserted into the connector slot (221), the through hole (211) on the first shell (21) and the through hole (211) on the second shell (22) are aligned.

8. A synchronous switching AC / DC contactor with signal switching according to claim 6, characterized in that: The first shell (21) is provided with multiple limiting rods (213), and the second shell (22) is provided with multiple limiting holes (222) for the limiting rods (213) to be inserted. When the limiting rods (213) are inserted into the limiting holes (222), the first shell (21) and the second shell (22) are pre-fixed.

9. A synchronous switching AC / DC contactor with signal switching according to claim 6, characterized in that: A rotating plate (223) is rotatably connected to the second shell (22), and a locking block (224) is provided on the rotating plate (223). The first shell (21) is provided with a slot (214) for inserting the locking block (224). When the locking block (224) is inserted into the slot (214), the first shell (21) and the second shell (22) are fixed.

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