Top-hung auxiliary contact module

Abstract

The utility model discloses a top hanging auxiliary contact module which is arranged on a shell of a contactor and comprises an arc extinguishing cover and an indicating piece, the arc extinguishing cover comprises a panel, a through hole is formed in the panel, the indicating piece and the through hole are both arranged at the upper end of a contact moving track of the contactor, when the contactor is closed, a contact is far away from the indicating piece, and when the contactor is disconnected, the indicating piece is arranged on the panel. According to the utility model, the contact support assembly is provided with an indicating piece, the contact jacks up the indicating piece, a self-positioning piece is also arranged between the indicating piece and the panel, and the self-positioning piece limits the downward or upward displacement of the indicating piece when the contactor is closed and opened, so that the displacement of the indicating piece when the contact support assembly is opened and closed is fixed through the self-positioning piece; according to the utility model, contact strokes with different lengths can have the same indicator stroke, contactors with different specifications can use the same type of top-hung auxiliary contact module, the specifications of products are reduced, the manufacturing cost is reduced, and the top-hung auxiliary contact has universality and uniformity.

Description

Technical Field

[0001] The present application relates to the technical field of contactors, and in particular to a top-hung auxiliary contact module. Background Art

[0002] A contactor is a widely used switching device that uses electromagnetic, pneumatic or hydraulic principles to control the main circuit. The internal coil generates magnetic force when energized. During use, the coil is prone to burn out. The main reasons include excessive power supply voltage, overcurrent or overload, long-term operation, and coil insulation damage. When a fault caused by the above reasons occurs, maintenance is required.

[0003] In existing contactor products, when different models and types of contactors are opened and closed, the total stroke of the contact moving up and down is different. Therefore, the top-hanging auxiliary contact module of each contactor must be customized according to the stroke of the contact, and it is impossible to use a unified and universal top-hanging contact module, which greatly increases the specifications of the products and affects the production efficiency. At the same time, even for the same series of contactors from the same manufacturer, the top-hanging auxiliary contact modules of the contactors are quite different, which can easily cause users to misunderstand the products and cause inconvenience in use. Summary of the invention

[0004] In view of the above problems, the present application proposes a top-hanging auxiliary contact module, which fixes the displacement of the indicator when the contact support assembly is opened and closed by setting a self-positioning sheet, so that contact strokes of different lengths can have the same indicator stroke, and contactors of different specifications can use the same type of top-hanging auxiliary contact module, which reduces product specifications, reduces manufacturing costs, and makes the top-hanging auxiliary contacts universal and unified; the top-hanging auxiliary contact module is specifically implemented by the following technical solutions:

[0005] A top-mounted auxiliary contact module is arranged on the shell of a contactor, comprising: an arc extinguishing hood and an indicator, the arc extinguishing hood cover is arranged on the shell of the contactor, the arc extinguishing hood includes a panel, a through hole is arranged on the panel, the indicator is movably arranged in the through hole, the indicator and the through hole are both arranged at the upper end of the contact movement trajectory of the contactor, when the contactor is closed, the contact is away from the indicator, when the contactor is disconnected, the contact lifts up the indicator, a self-positioning piece is also arranged between the indicator and the panel, the self-positioning piece limits the downward or upward displacement of the indicator when the contactor is closed and disconnected, respectively.

[0006] It is further configured that a first positioning boss is provided on the outer shell, a first positioning flange is provided on the panel, the self-positioning piece passes through the indicator, and at the same time the first positioning flange presses both ends of the self-positioning piece downwardly against the first positioning boss. Through this configuration, the self-positioning piece can be fixed without connecting parts, so that the overall installation is convenient and the structure is stable.

[0007] It is further configured that a cavity is provided inside the indicator member, and a second limit boss is provided on the inner wall of the cavity, and the second limit boss is provided at the lower wall position of the cavity. When the contactor is disconnected, the indicator member moves upward, and the second limit boss abuts against the lower surface of the self-positioning sheet to form an upward limit. When the contactor is closed, the indicator member moves downward, and the upper wall of the cavity abuts against the upper surface of the self-positioning sheet to form a lower limit. Through this configuration, the upper and lower movements of the indicator member are limited, so that the basic function of the same indication action can be achieved for contactors with different contact strokes.

[0008] It is further configured that the inner wall of the cavity is also provided with a guide flange, and the guide flange is arranged at the upper wall position of the cavity. The self-positioning piece is provided with a guide opening corresponding to the guide flange. During the up and down displacement process, the self-positioning piece always vertically penetrates the guide opening. Through this configuration, the indicator plays a certain guiding role during the movement, so that the overall structure is more stable.

[0009] It is further configured that a spring is provided in the cavity, and the spring is provided between the self-positioning sheet and the lower wall of the cavity. The self-positioning sheet is provided with a positioning protrusion corresponding to the position of the spring, and the upper end of the spring is sleeved on the outer periphery of the positioning protrusion. Through this configuration, the indicator provides a restoring force to itself through the spring, so that the extension and retraction of the indicator are more stable and reliable when the indicator does not contact the contact.

[0010] It is further configured that the spring is configured as a compression spring, one end of the preload force of the spring acts on the lower wall of the cavity, and the other end acts on the lower surface of the self-positioning sheet. Through this configuration, the extension and retraction of the indicator are made more stable and reliable.

[0011] It is further configured that the contact of the contactor includes a movable contact and a fixed seat, the movable contact is movably arranged on the fixed seat, a spring cavity is formed between the movable contact and the fixed seat, a preload spring is arranged in the spring cavity, a second positioning boss is arranged in the spring cavity relative to the position of the preload spring, and the movable contact is provided with a positioning bent arm relative to the preload spring. Through this configuration, the contact of the contactor can be perfectly reset, and the overall structure is stable and reliable.

[0012] The top-mounted auxiliary contact module described above, by setting a self-positioning plate, fixes the displacement of the indicator when the contact support assembly is opened and closed, so that contact strokes of different lengths can have the same indicator stroke, and realizes that contactors of different specifications use the same type of top-mounted auxiliary contact modules, reducing product specifications, reducing manufacturing costs, and making the top-mounted auxiliary contacts universal and unified. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 A schematic diagram of the structure of a top-mounted auxiliary contact module provided in an embodiment of the present application;

[0015] Figure 2 A cross-sectional view of a top-mounted auxiliary contact module provided in an embodiment of the present application Figure 1 ;

[0016] Figure 3 The top-hung auxiliary contact module provided in the embodiment of the present application Figure 2 Enlarged view of part A in the middle;

[0017] Figure 4 A cross-sectional view of a top-mounted auxiliary contact module provided in an embodiment of the present application Figure 2 ;

[0018] Figure 5 The top-hung auxiliary contact module provided in the embodiment of the present application Figure 4 Enlarged view of part B in the middle.

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Contactor; 2. Housing; 3. Arc extinguishing cover; 4. Indicator; 5. Panel; 6. Through hole; 7. Self-positioning sheet; 8. First positioning boss; 9. First positioning flange; 10. Cavity; 11. Second limiting boss; 12. Guide flange; 13. Guide opening; 14. Spring; 15. Positioning protrusion; 16. Movable contact; 17. Fixed seat; 18. Spring cavity; 19. Preload spring; 20. Second positioning boss; 21. Positioning bent arm. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0024] Please also read Figures 1 to 5 A top-hanging auxiliary contact module is arranged on the housing 2 of the contactor 1, comprising: an arc extinguishing cover 3 and an indicator 4, the arc extinguishing cover 3 is covered on the housing 2 of the contactor 1, the arc extinguishing cover 3 comprises a panel 5, a through hole 6 is arranged on the panel 5, the indicator 4 is movably arranged on the through hole 6, the indicator 4 and the through hole 6 are both arranged at the upper end of the contact activity track of the contactor 1, when the contactor 1 is closed, the contact is away from the indicator 4, when the contactor 1 is disconnected, the contact lifts the indicator 4, and a self-positioning sheet is also arranged between the indicator 4 and the panel 5 7. The self-positioning piece 7 limits the downward or upward displacement of the indicator 4 when the contactor 1 is closed or opened. The self-positioning piece 7 is clamped between the panel 5, the indicator 4 and the housing 2, and limits the self-positioning piece 7 from different directions, thereby achieving a fixed position of the self-positioning piece 7. Such a setting has great advantages. There is no need to set connecting parts such as screws or practical welding or one-piece molding. The operation and production are simpler. At the same time, there is no need to destroy the overall appearance of the parts, so that the strength of the parts is more stable.

[0025] See also Figures 1 to 5In this embodiment, a first positioning boss 8 is provided on the housing 2, and a first positioning flange 9 is provided on the panel 5. The self-positioning piece 7 passes through the indicator 4, and the first positioning flange 9 presses both ends of the self-positioning piece 7 downward against the first positioning boss 8. The first boss limits the downward displacement and left-right lateral movement of the self-positioning piece 7, and the first positioning flange 9 limits the upward displacement of the self-positioning piece 7, so that the position of the self-positioning piece 7 is fixed relative to the housing 2 of the contactor 1, so that when the indicator 4 moves up and down, the various parts of the indicator 4 are respectively aligned with the self-positioning piece 7. The upper surface and the lower surface of the sheet 7 are in contact to form a limit, thereby realizing the upward limit and downward limit of the indicator 4, realizing the basic function; a cavity 10 is arranged inside the indicator 4, and a second limit boss 11 is arranged on the inner wall of the cavity 10, and the second limit boss 11 is arranged on the lower wall position of the cavity 10. When the contactor 1 is disconnected, the indicator 4 moves upward, and the second limit boss 11 abuts against the lower surface of the self-positioning sheet 7 to form an upward limit; when the contactor 1 is closed, the indicator 4 moves downward, and the upper wall of the cavity 10 abuts against the upper surface of the self-positioning sheet 7 to form a lower limit; the inner wall of the cavity 10 is also provided with A guide flange 12 is provided at the upper wall position of the cavity 10, and a guide opening 13 is provided at the self-positioning piece 7 corresponding to the guide flange 12. The self-positioning piece 7 always vertically penetrates the guide opening 13 during the up and down displacement process. The guide device provided in this way can greatly improve the stability of the indicator 4 during the up and down displacement process, thereby reducing the wear caused by unnecessary friction; a spring 14 is also provided in the cavity 10, and the spring 14 is provided between the self-positioning piece 7 and the lower wall of the cavity 10, and a positioning protrusion 15 is provided at the position of the self-positioning piece 7 corresponding to the spring 14, and the upper end sleeve of the spring 14 Provided with the outer periphery of the positioning protrusion 15; the spring 14 is set as a compression spring 14, one end of the preload force of the spring 14 acts on the lower wall of the cavity 10, and the other end acts on the lower surface of the self-positioning sheet 7, the contact of the contactor includes a movable contact 16 and a fixed seat 17, the movable contact 16 is movably arranged on the fixed seat 17, and a spring cavity 18 is formed between the movable contact 16 and the fixed seat 17, a preload spring 19 is arranged in the spring cavity 18, a second positioning boss 20 is arranged in the spring cavity 18 relative to the preload spring 19, and the movable contact 16 is provided with a positioning bent arm 21 relative to the preload spring 19.

[0026] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A top-mounted auxiliary contact module, arranged on a housing (2) of a contactor (1), comprising: An arc extinguishing hood (3) and an indicator (4), wherein the arc extinguishing hood (3) is covered on a housing (2) of a contactor (1), the arc extinguishing hood (3) comprises a panel (5), a through hole (6) is provided on the panel (5), the indicator (4) is movably provided in the through hole (6), the indicator (4) and the through hole (6) are both provided at the upper end of a contact movement track of the contactor (1), when the contactor (1) is closed, the contact is away from the indicator (4), when the contactor (1) is disconnected, the contact lifts up the indicator (4), and is characterized in that: a self-positioning sheet (7) is further provided between the indicator (4) and the panel (5), and the self-positioning sheet (7) limits the downward or upward displacement of the indicator (4) when the contactor (1) is closed and disconnected, respectively.

2. A top-hung auxiliary contact module according to claim 1, characterized in that The housing (2) is provided with a first positioning boss (8), the panel (5) is provided with a first positioning flange (9), the self-positioning sheet (7) passes through the indicator (4), and the first positioning flange (9) presses both ends of the indicator (4) downward against the first positioning boss (8).

3. A top-hung auxiliary contact module according to claim 1, characterized in that The indicating member (4) is provided with a cavity (10) inside, and the inner wall of the cavity (10) is provided with a second limiting boss (11), and the second limiting boss (11) is arranged at the lower wall position of the cavity (10); when the contactor (1) is disconnected, the indicating member (4) moves upward, and the second limiting boss (11) abuts against the lower surface of the self-positioning sheet (7), forming an upward limiting position; when the contactor (1) is closed, the indicating member (4) moves downward, and the upper wall of the cavity (10) abuts against the upper surface of the self-positioning sheet (7), forming a lower limiting position.

4. A top-hung auxiliary contact module according to claim 3, characterized in that The inner wall of the cavity (10) is also provided with a guide flange (12), and the guide flange (12) is arranged at the upper wall position of the cavity (10). The self-positioning piece (7) is provided with a guide opening (13) corresponding to the guide flange (12). During the process of upward and downward displacement, the self-positioning piece (7) always vertically penetrates the guide opening (13).

5. The top-hung auxiliary contact module according to claim 3, characterized in that A spring (14) is also arranged in the cavity (10). The spring (14) is arranged between the self-positioning sheet (7) and the lower wall of the cavity (10). The self-positioning sheet (7) is provided with a positioning protrusion (15) corresponding to the position of the spring (14). The upper end of the spring (14) is sleeved on the outer periphery of the positioning protrusion (15).

6. A top-hung auxiliary contact module according to claim 5, characterized in that The spring (14) is configured as a compression spring (14), one end of the preload force of the spring (14) acts on the lower wall of the cavity (10), and the other end acts on the lower surface of the self-positioning sheet (7).

7. The top-hung auxiliary contact module according to claim 1, characterized in that The contact of the contactor comprises a movable contact (16) and a fixed seat (17); the movable contact (16) is movably arranged on the fixed seat (17); a spring cavity (18) is formed between the movable contact (16) and the fixed seat (17); a preload spring (19) is arranged in the spring cavity (18); a second positioning boss (20) is arranged in the spring cavity (18) at a position relative to the preload spring (19); and the movable contact (16) is provided with a positioning bent arm (21) relative to the preload spring (19).

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