Auxiliary Contact System for Contactors

Abstract

The present disclosure discloses an auxiliary contact system for a contactor, including an auxiliary movable contact (10), an auxiliary stationary contact (20) corresponding to the auxiliary movable contact (10), and a rotating member (100) configured to be rotatable between a first position and a second position. When the rotating member (100) is rotated to the first position, the rotating member (100) moves the contactor's main movable contact (30) to an electrical contact position where the main movable contact (30) contacts the contactor's main stationary contact. When the rotating member (100) is rotated to the second position, the rotating member (100) moves the contactor's main movable contact (30) to an electrical isolation position where the main movable contact (30) is isolated from the contactor's main stationary contact. When the rotating member (100) is in the first position, the auxiliary movable contact (10) is in the electrical contact position where the auxiliary movable contact (10) contacts the auxiliary stationary contact (20). When the rotating member (100) is in the second position, the rotating member (100) pushes the auxiliary movable contact (10) to an electrically isolated position where the auxiliary movable contact (10) is isolated from the auxiliary stationary contact (20). In the present disclosure, the synchronized operation of the auxiliary movable contact and the main movable contact can be controlled by the rotating member. Therefore, there is no need to add an auxiliary switch, which reduces the manufacturing cost of the contactor.

Description

[Technical field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit of Chinese patent application CN201922266990.4, filed with the China National Intellectual Property Office on December 17, 2019, the entire disclosure of which is incorporated herein by reference.

[0002] SUMMARY OF THE DISCLOSURE Embodiments of the present disclosure relate to an auxiliary contact system for a contactor. [Background technology]

[0003] A contactor is a kind of control electrical equipment. The operation of the main circuit contact (including the main moving contact and the main stationary contact) can be controlled by a coil electromagnetic system to realize the connection and disconnection of the main circuit. At the same time, the contactor is usually equipped with an additional auxiliary contact (including the auxiliary moving contact and the auxiliary stationary contact), which serves to connect the auxiliary circuit, indicating that the main circuit is in the on or off state. In the prior art, the auxiliary contact is usually a purchased auxiliary switch, which is complex in structure and expensive. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE DISCLOSURE It is an object of the present disclosure to address at least one aspect of the aforementioned problems and shortcomings in the prior art. [Means for solving the problem]

[0005] According to one aspect of the disclosure, there is provided an auxiliary contact system for a contactor, the auxiliary contact system including an auxiliary movable contact, an auxiliary stationary contact corresponding to the auxiliary movable contact, and a rotating member configured to be rotatable between a first position and a second position. When the rotating member is rotated to the first position, a primary movable contact of the contactor is moved by the rotating member to an electrical contact position where the primary movable contact contacts the primary stationary contact of the contactor. When the rotating member is rotated to the second position, the primary movable contact of the contactor is moved by the rotating member to an electrical isolation position where the primary movable contact is isolated from the primary stationary contact of the contactor. When the rotating member is in the first position, the auxiliary movable contact is in an electrical contact position where the auxiliary movable contact contacts the auxiliary stationary contact, and when the rotating member is in the second position, the rotating member pushes the auxiliary movable contact to an electrical isolation position where the auxiliary movable contact is isolated from the auxiliary stationary contact.

[0006] According to an exemplary embodiment of the present disclosure, when the rotating member is in a first position, the rotating member is configured not to contact the auxiliary movable contact, and the auxiliary movable contact is configured to make electrical contact with the auxiliary stationary contact by its own elastic deformation force.

[0007] According to another exemplary embodiment of the present disclosure, when the rotating member is in the second position, the rotating member is configured to overcome an elastic deformation force of the auxiliary movable contact and push the auxiliary movable contact to an electrically isolated position where the auxiliary movable contact is separated from the auxiliary stationary contact.

[0008] According to another exemplary embodiment of the present disclosure, the auxiliary movable contact includes an auxiliary movable elastic sheet and a protruding auxiliary movable contact provided on the auxiliary movable elastic sheet, and the auxiliary stationary contact includes an auxiliary stationary terminal and a protruding auxiliary stationary contact provided on the auxiliary stationary terminal, and the protruding auxiliary movable contact of the auxiliary movable contact is configured to be in electrical contact with the protruding auxiliary stationary contact of the auxiliary stationary contact when the rotating member is in a first position.

[0009] According to another exemplary embodiment of the present disclosure, when the rotating member is in a first position, the protruding auxiliary movable contact is configured to be in electrical contact with the protruding auxiliary stationary contact by an elastic deformation force generated by the auxiliary movable elastic sheet.

[0010] According to another exemplary embodiment of the present disclosure, the rotating member is formed with a pressing portion for pressing the auxiliary movable elastic sheet, and the auxiliary movable elastic sheet is formed with an extension portion corresponding to the pressing portion. During the rotation of the rotating member from the first position to the second position, the pressing portion presses the extension portion to overcome the elastic deformation force generated by the auxiliary movable elastic sheet, thereby moving the auxiliary movable elastic sheet.

[0011] According to another exemplary embodiment of the present disclosure, the extension portion is configured to extend outwardly from the end of the auxiliary movable elastic sheet by a predetermined length to increase the arm length of the auxiliary movable elastic sheet.

[0012] According to another exemplary embodiment of the present disclosure, the protruding auxiliary movable contact is fastened to the auxiliary movable elastic sheet, and the protruding auxiliary stationary contact is fastened to the auxiliary stationary terminal.

[0013] According to another exemplary embodiment of the present disclosure, the auxiliary movable contact further comprises an auxiliary movable terminal, and the auxiliary movable elastic sheet is fastened to the auxiliary movable terminal.

[0014] According to another exemplary embodiment of the present disclosure, the auxiliary movable terminal and the auxiliary stationary terminal are fixed to an inner wall of the housing of the contactor.

[0015] In each of the above exemplary embodiments according to the present disclosure, the auxiliary movable contact and the main movable contact can be controlled to operate synchronously by the rotating member. Therefore, there is no need to add an auxiliary switch, which reduces the manufacturing cost of the contactor. Moreover, the auxiliary contact system of the present application has strong anti-interference ability, which can avoid malfunction and accurately indicate the working status of the main circuit.

[0016] Other objects and advantages of the present disclosure will become apparent from the following description of the present disclosure, which refers to the accompanying drawings and may aid in a comprehensive understanding of the present disclosure.

[0017] The foregoing and other features of the present disclosure will become more apparent from the detailed description of exemplary embodiments of the present disclosure taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a schematic diagram of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure, showing the auxiliary movable contact in an electrical contact position in contact with the auxiliary stationary contact. [Diagram 2] FIG. 2 is a schematic diagram of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure, showing the auxiliary movable contact in an electrically isolated position in which it is isolated from the auxiliary stationary contact. [Diagram 3] FIG. 2 is a schematic perspective view of an auxiliary movable contact of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure; [Figure 4] FIG. 2 is a schematic perspective view of an auxiliary stationary contact of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The technical scheme of the present disclosure will be further described in detail by the following embodiments with reference to the accompanying drawings. In this specification, the same or similar reference symbols indicate the same or similar components. The following description of the embodiments of the present disclosure with reference to the accompanying drawings is intended to explain the general inventive concept of the present disclosure, and should not be construed as limiting the present disclosure.

[0020] Moreover, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. However, it will be apparent that one or more embodiments may be practiced without such specific details. In other instances, well-known structures and devices are shown in schematic form to simplify the drawings.

[0021] According to a general technical concept of the present disclosure, there is provided an auxiliary contact system for a contactor, the auxiliary contact system including an auxiliary movable contact, an auxiliary stationary contact corresponding to the auxiliary movable contact, and a rotating member configured to be rotatable between a first position and a second position. When the rotating member is rotated to the first position, the rotating member moves a main movable contact of the contactor to an electrical contact position where the main movable contact contacts the main stationary contact of the contactor. When the rotating member is rotated to the second position, the rotating member moves the main movable contact of the contactor to an electrical isolation position where the main movable contact is isolated from the main stationary contact of the contactor. When the rotating member is in the first position, the auxiliary movable contact is in an electrical contact position where the auxiliary movable contact contacts the auxiliary stationary contact. When the rotating member is in the second position, the rotating member urges the auxiliary movable contact to an electrically isolated position in which the auxiliary movable contact is isolated from the auxiliary stationary contact.

[0022] FIG. 1 is a schematic diagram of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure, in which an auxiliary movable contact 10 is in an electrical contact position in which the auxiliary movable contact 10 contacts an auxiliary stationary contact 20 .

[0023] 1, in the illustrated embodiment, the auxiliary contact system of the contactor mainly includes an auxiliary movable contact 10, an auxiliary stationary contact 20, and a rotating member 100. The auxiliary stationary contact 20 corresponds to the auxiliary movable contact 10.

[0024] FIG. 2 is a schematic diagram of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure, with the auxiliary movable contact 10 in an electrically isolated position where the auxiliary movable contact 10 is isolated from the auxiliary stationary contact 20.

[0025] As shown in Figures 1 and 2, in the illustrated embodiment, rotatable member 100 is configured to be rotatable between a first position (the position shown in Figure 1) and a second position (the position shown in Figure 2).

[0026] As shown in FIG. 1, in an exemplary embodiment, when the rotating member 100 is rotated to a first position, the rotating member 100 moves the main movable contact 30 of the contactor to an electrical contact position in which the main movable contact 30 contacts a main stationary contact (not shown) of the contactor.

[0027] As shown in FIG. 2, in an exemplary embodiment, rotating the rotating member 100 to the second position causes the rotating member 100 to move the main movable contact of the contactor to an electrically isolated position in which the main movable contact is isolated from the main stationary contact of the contactor.

[0028] As shown in FIG. 1, in the illustrated embodiment, when the rotating member 100 is in the first position, the auxiliary movable contact 10 is in an electrical contact position where the auxiliary movable contact 10 contacts the auxiliary stationary contact 20 .

[0029] As shown in FIG. 2, in the illustrated embodiment, when the rotating member 100 is in the second position, the rotating member 100 pushes the auxiliary movable contact 10 to an electrically isolated position in which the auxiliary movable contact 10 is isolated from the auxiliary stationary contact 20.

[0030] As shown in FIG. 1, in an exemplary embodiment, when the rotating member 100 is in a first position, the rotating member 100 is configured not to contact the auxiliary movable contact 10, and the auxiliary movable contact 10 is configured to make electrical contact with the auxiliary stationary contact 20 by its own elastic deformation force.

[0031] As shown in FIG. 2 , in an exemplary embodiment, when the rotating member 100 is in the second position, the rotating member 100 is configured to overcome the elastic deformation force of the auxiliary movable contact 10 and push the auxiliary movable contact 10 to an electrically isolated position where the auxiliary movable contact 10 is separated from the auxiliary stationary contact 20.

[0032] Fig. 3 is a schematic perspective view of an auxiliary movable contact 10 of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure. Fig. 4 is a schematic perspective view of an auxiliary stationary contact 20 of an auxiliary contact system of a contactor according to an exemplary embodiment of the present disclosure.

[0033] 1 to 4, in the illustrated embodiment, the auxiliary movable contact 10 includes an auxiliary movable elastic sheet 11 and a protruding auxiliary movable contact point 11a provided on the auxiliary movable elastic sheet 11. The auxiliary stationary contact 20 includes an auxiliary stationary terminal 21 and a protruding auxiliary stationary contact point 21a provided on the auxiliary stationary terminal 21.

[0034] As shown in Figures 1 to 4, in the illustrated embodiment, when the rotating member 100 is in the first position, the protruding auxiliary movable contact 11a of the auxiliary movable contact 10 is configured to be in electrical contact with the protruding auxiliary stationary contact 21a of the auxiliary stationary contact 20.

[0035] As shown in Figures 1 to 4, in the illustrated embodiment, when the rotating member 100 is in a first position, the protruding auxiliary movable contact 11a is configured to be in electrical contact with the protruding auxiliary stationary contact 21a by an elastic deformation force generated by the auxiliary movable elastic sheet 11.

[0036] 1 to 4, in the illustrated embodiment, the rotating member 100 is formed with a pressing portion 110 for pressing the auxiliary movable elastic sheet 11, and the auxiliary movable elastic sheet 11 is formed with an extension portion 11b corresponding to the pressing portion 110. While the rotating member 100 rotates from the first position to the second position, the pressing portion 110 presses the extension portion 11b so as to overcome the elastic deformation force generated by the auxiliary movable elastic sheet 11, thereby moving the auxiliary movable elastic sheet 11.

[0037] As shown in Figures 1 to 4, in the exemplary embodiment, the extension portion 11b of the auxiliary movable elastic sheet 11 is configured to extend outward from the end of the auxiliary movable elastic sheet 11 by a predetermined length, thereby increasing the arm length of the auxiliary movable elastic sheet 11.

[0038] As shown in Figures 1 to 4, in the exemplary embodiment, the protruding auxiliary movable contact 11a is configured as a separate member from the auxiliary movable elastic sheet 11 and is fastened to the auxiliary movable elastic sheet 11, and the protruding auxiliary static contact 21a is configured as a separate member from the auxiliary static terminal 21 and is fastened to the auxiliary static terminal 21.

[0039] As shown in FIGS. 1 to 4, in the illustrated embodiment, the auxiliary movable contact 10 further includes an auxiliary movable terminal 12, and the auxiliary movable elastic sheet 11 is fastened to the auxiliary movable terminal 12. As shown in FIG.

[0040] As shown in FIGS. 1 to 4, in the illustrated embodiment, the auxiliary movable terminal 12 and the auxiliary stationary terminal 21 are fixed to the inner wall of the housing 1 of the contactor.

[0041] In each of the above-mentioned exemplary embodiments according to the present disclosure, the synchronous operation of the auxiliary movable contact and the main movable contact can be controlled by the rotating member. Therefore, there is no need to add an auxiliary switch, which reduces the manufacturing cost of the contactor. In addition, the auxiliary contact system of the present application has strong anti-interference ability to avoid malfunction and accurately indicate the working status of the main circuit. For example, when the main circuit of the contactor fails and cannot disconnect the working contact, the rotating member cannot reset normally, and the auxiliary movable contact and the auxiliary stationary contact will be in the ON state, and an alarm of abnormal working status will be issued by signal feedback. Thereby, the working status of the main circuit can be efficiently and accurately monitored.

[0042] It will be understood by those skilled in the art that the embodiments described above are illustrative and may be modified, and that the structures described in the various embodiments may be freely combined without any contradiction in structure or principle.

[0043] The present disclosure has been described with reference to the accompanying drawings, in which the embodiments disclosed are intended to be illustrative illustrations of preferred embodiments of the present disclosure and should not be construed as limiting the present disclosure.

[0044] While several embodiments of the general inventive concepts of the present disclosure have been illustrated and described, it will be understood by those skilled in the art that changes can be made to these embodiments without departing from the principles and spirit of the general inventive concepts, with the scope of the present disclosure being defined by the claims and their equivalents.

[0045] It should be noted that the term "comprising" does not exclude other elements or steps, and the terms "a" or "an" do not exclude a plurality. Moreover, any reference numbers in the claims should not be construed as limiting the scope of the present disclosure.

Claims

1. 1. An auxiliary contact system for a contactor, comprising: An auxiliary movable contact (10); an auxiliary stationary contact (20) corresponding to the auxiliary movable contact (10); a rotating member (100) configured to be rotatable between a first position and a second position; When the rotating member (100) is rotated to the first position, a main movable contact (30) of the contactor is moved by the rotating member (100) to an electrical contact position in which the main movable contact (30) contacts a main stationary contact of the contactor; When the rotating member (100) is rotated to the second position, the main movable contact (30) of the contactor is moved by the rotating member (100) to an electrically isolated position in which the main movable contact (30) is isolated from the main stationary contact of the contactor, When the rotating member (100) is in the first position, the auxiliary movable contact (10) is in the electrical contact position where the auxiliary movable contact (10) contacts the auxiliary stationary contact (20); When the rotating member (100) is in the second position, the rotating member (100) pushes the auxiliary movable contact (10) to the electrical isolation position where the auxiliary movable contact (10) is isolated from the auxiliary stationary contact (20); The rotating member (100) is formed with a pressing portion (110) for pressing the auxiliary movable elastic sheet (11) of the auxiliary movable contact (10), and the auxiliary movable elastic sheet (11) is formed with an extension portion (11b) corresponding to the pressing portion (110); While the rotating member (100) rotates from the first position to the second position, the pushing portion (110) pushes the extension portion (11b) so as to overcome an elastic deformation force generated by the auxiliary movable elastic sheet (11), thereby moving the auxiliary movable elastic sheet (11). Auxiliary contact system for contactors.

2. When the rotating member (100) is in the first position, the rotating member (100) is configured not to come into contact with the auxiliary movable contact (10), and the auxiliary movable contact (10) is configured to come into electrical contact with the auxiliary stationary contact (20) by the elastic deformation force generated by the auxiliary movable elastic sheet (11).

10. The auxiliary contact system of claim 1.

3. When the rotating member (100) is in the second position, the rotating member (100) is configured to overcome the elastic deformation force of the auxiliary movable contact (10) and push the auxiliary movable contact (10) to the electrical isolation position where the auxiliary movable contact (10) is isolated from the auxiliary stationary contact (20).

3. The auxiliary contact system of claim 2.

4. The auxiliary movable contact (10) includes the auxiliary movable elastic sheet (11) and a protruding auxiliary movable contact point (11a) provided on the auxiliary movable elastic sheet (11), The auxiliary stationary contact (20) comprises an auxiliary stationary terminal (21) and a protruding auxiliary stationary contact (21a) provided on the auxiliary stationary terminal (21); When the rotating member (100) is in the first position, the protruding auxiliary movable contact (11a) of the auxiliary movable contact (10) is configured to be in electrical contact with the protruding auxiliary stationary contact (21a) of the auxiliary stationary contact (20).

10. The auxiliary contact system of claim 1.

5. When the rotating member (100) is in the first position, the protruding auxiliary movable contact (11a) is configured to electrically contact the protruding auxiliary stationary contact (21a) by the elastic deformation force generated by the auxiliary movable elastic sheet (11).

5. The auxiliary contact system of claim 4.

6. The extension portion (11b) is configured to extend outward from an end of the auxiliary movable elastic sheet (11) by a predetermined length to increase the arm length of the auxiliary movable elastic sheet (11).

6. The auxiliary contact system of claim 5.

7. The extension portion (11b) is configured to extend outward from the end of the auxiliary movable elastic sheet (11) by a predetermined length to increase the arm length of the auxiliary movable elastic sheet (11).

10. The auxiliary contact system of claim 1.

8. The protruding auxiliary movable contact (11a) is fastened to the auxiliary movable elastic sheet (11), The protruding auxiliary stationary contact (21a) is fastened to the auxiliary stationary terminal (21).

5. The auxiliary contact system of claim 4.

9. The auxiliary movable contact (10) further comprises an auxiliary movable terminal (12), The auxiliary movable elastic sheet (11) is fastened to the auxiliary movable terminal (12), 5. The auxiliary contact system of claim 4.

10. The auxiliary movable terminal (12) and the auxiliary stationary terminal (21) are fixed to an inner wall of the housing (1) of the contactor.

10. The auxiliary contact system of claim 9.

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