Contact mounting structure and contactor

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a contact mounting structure and a contactor. According to the contact installation structure provided by the utility model, the contact support is arranged in the first accommodating cavity of the base, the sliding block connected with the contact support passes through the plugging port and is arranged in the dustproof channel in a sliding manner, and the contact support slides in the first accommodating cavity under the guidance of the dustproof channel; a linkage cavity is arranged on the outer side face of the sliding block, a moving window is arranged on the dustproof channel, the linkage cavity and the moving window are correspondingly arranged, a cantilever of the side hanging accessory can penetrate through the moving window to be connected with the linkage cavity, and linkage of the auxiliary contact and the moving contact assembly is achieved. The moving window and the plugging port are arranged in a staggered mode, electric arcs generated when the moving contact assembly is disconnected cannot be sprayed out and splashed outwards through the moving window, the dielectric property and the use safety coefficient of the contactor are improved, external foreign matter cannot enter the contactor through the moving window, and then the practical reliability of the contactor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a contact installation structure and a contactor. Background Art

[0002] Contactors are one of the main low-voltage components for controlling motors and power circuits. Their main function is to frequently connect and disconnect motor circuits or power transmission and distribution circuits over long distances. Contactors usually include contact systems, electromagnetic systems, support / insulation systems, etc. The contact system includes moving and static contacts, a base that carries the static contacts, and contact supports that carry the reciprocating motion of the moving contacts.

[0003] The existing contactor needs to be linked with the auxiliary contact of the side-mounted accessory. Usually, installation windows and movement windows are opened on both sides of the contactor base, and a linkage cavity is set on the contact support of the contactor. The side-mounted accessory is fixed on the base of the contactor through the installation window. The cantilever of the side-mounted accessory passes through the movement window and is connected with the linkage cavity. The reciprocating motion of the contact support of the contactor drives the cantilever to move, thereby realizing the linkage of the main contact and the auxiliary contact. The installation window and the movement window in the prior art are directly connected with the cavity of the contact support installed on the base, which has the following problems: First, the arc generated when the main contact of the contactor is turned on and off is easy to spray and splash through the installation window and the movement window, reducing the dielectric performance of the contactor, and even forming a short circuit with the splashing arc in the adjacent contactor, causing safety hazards; Second, foreign objects such as dust, particles, flying insects, etc. can easily invade the interior of the contactor through the installation window and the movement window, reducing the reliability of the contact of the main contact of the contactor. Utility Model Content

[0004] The utility model aims to provide a contact installation structure and a contactor, which can effectively prevent arc ejection and splashing generated when the contactor is switched on and off, improve the dielectric performance and safety factor of the contactor, and prevent foreign matter from easily entering the interior of the contactor, thereby improving the reliability of the contactor.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The contact installation structure includes:

[0007] The moving contact assembly comprises a contact support, wherein two opposite sides of the contact support are provided with sliders respectively, and the outer side surface of at least one of the sliders is provided with a linkage cavity, and the linkage cavity is used to connect with the cantilever of the side-mounted accessory;

[0008] A base, wherein the base is provided with a first accommodating cavity, dustproof channels are respectively provided on opposite sides of the first accommodating cavity, each of the dustproof channels is respectively provided with a plug interface, the slider passes through the plug interface and is slidably arranged in the dustproof channel, the contact support is placed in the first accommodating cavity, at least one of the dustproof channels is provided with a moving window, the moving window and the plug interface are staggered, and the linkage cavity is arranged corresponding to the moving window.

[0009] As an optional technical solution for the above-mentioned contact installation structure, the bottom of the first accommodating cavity is provided with an installation opening, the dustproof channel extends along the height direction of the first accommodating cavity, and one end of the dustproof channel is provided with the plug interface connected to the installation opening, one end of the contact support passes through the installation opening and is placed in the first accommodating cavity, and the moving window is arranged on the side wall of the dustproof channel opposite to the contact support.

[0010] As an optional technical solution for the above-mentioned contact installation structure, an installation window is provided on the outer wall on the same side as the base and the moving window, and the installation window is not connected to the dustproof channel and the first accommodating cavity. The installation window is used to be connected with the buckle on the side-mounted accessory.

[0011] As an optional technical solution for the above-mentioned contact installation structure, the side wall of the base is provided with at least one installation groove from the bottom along the height direction of the first accommodating cavity, and the groove wall of each installation groove is provided with at least one installation window.

[0012] As an optional technical solution for the above-mentioned contact installation structure, at least two installation grooves are provided on one side of the base, the installation grooves are respectively provided on both sides of the movement window, and the groove wall of each installation groove is provided with at least two installation windows.

[0013] As an optional technical solution for the above-mentioned contact installation structure, guide ribs are respectively provided on two opposite sides of each slider, and the inner wall of the dustproof channel is provided with a guide groove corresponding to the guide rib, and the guide rib is slidably arranged in the guide groove.

[0014] As an optional technical solution for the above-mentioned contact installation structure, the two other opposite inner side walls of the first accommodating cavity are respectively provided with at least one guide groove, and the contact support is provided with a guide slider corresponding to the guide groove, and the guide slider is slidably set in the guide groove.

[0015] As an optional technical solution for the above-mentioned contact installation structure, the base includes a bottom plate, and side plates are respectively connected to the opposite sides of the bottom plate, two isolation plates are connected between the two side plates, the two isolation plates are spaced apart, and the first accommodating cavity is formed between the two isolation plates, the dustproof channel is arranged on the side plate, and second accommodating cavities are respectively arranged on both sides of the first accommodating cavity on the base, and a static contact assembly is arranged in the second accommodating cavity.

[0016] As an optional technical solution of the above-mentioned contact installation structure, the slider is snap-connected with the contact support, the slider is made of thermoplastic material, and the contact support is made of thermosetting material.

[0017] A contactor comprises the contact mounting structure described in any one of the above.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a contact installation structure, in which the contact support is placed in the first accommodating cavity of the base, the slider connected to the contact support is provided with an insertion interface and is slidably arranged in the dustproof channel, and the contact support slides in the first accommodating cavity under the guidance of the dustproof channel, thereby realizing the sliding connection between the contact support and the base; a linkage cavity is provided on the outer side of the slider, and a movement window is provided on the dustproof channel, the linkage cavity and the movement window are correspondingly arranged, and the cantilever of the side-hanging accessory can pass through the movement window and be connected with the linkage cavity, thereby realizing the linkage between the auxiliary contact and the moving contact assembly, and the movement window plays a role of avoidance when the cantilever moves with the contact support; the movement window and the insertion interface are staggered, and the arc generated when the moving contact assembly is disconnected will not spray outward or splash through the movement window, thereby improving the dielectric performance and the safety factor of the contactor, and foreign matter from the outside will not enter the inside of the contactor through the movement window, thereby improving the practical reliability of the contactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a base, a contact support and a side-mounted accessory provided by an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the exploded structure of the base and the contact support provided by the embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a base provided by an embodiment of the utility model;

[0023] Figure 4 It is a cross-sectional view of the first state of the base, contact support and side-mounted accessories provided by the embodiment of the utility model;

[0024] Figure 5It is a cross-sectional view of the second state of the base, contact support and side-mounted accessories provided by the embodiment of the utility model.

[0025] In the figure:

[0026] 100, side-mounted attachment; 101, cantilever; 102, buckle;

[0027] 2. Base;

[0028] 11. Contact support; 12. Slider; 13. Linkage cavity; 14. Guide rib; 15. Guide slider;

[0029] 21. First accommodating chamber; 22. Dust-proof passage; 23. Plug-in interface; 24. Movement window; 25. Installation opening; 26. Installation window; 27. Installation slot; 28. Guide slide slot; 29. ​​Second accommodating chamber;

[0030] 211, bottom plate; 212, side plate; 213, isolation plate;

[0031] a. Height direction. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] like Figures 1 to 4 As shown, this embodiment provides a contact installation structure, including a moving contact assembly and a base 2. The moving contact assembly includes a contact support 11, and sliders 12 are respectively provided on opposite sides of the contact support 11. The outer side of at least one slider 12 is provided with a linkage cavity 13, and the linkage cavity 13 is used to connect with the cantilever 101 of the side-mounted accessory 100. The base 2 is provided with a first accommodating cavity 21, and dustproof channels 22 are respectively provided on opposite sides of the first accommodating cavity 21. Each dustproof channel 22 is respectively provided with a plug-in port 23. The slider 12 is provided with a plug-in port 23 and is slidably arranged in the dustproof channel 22. The contact support 11 is placed in the first accommodating cavity 21. A moving window 24 is provided on at least one dustproof channel 22. The moving window 24 is staggered with the plug-in port 23, and the linkage cavity 13 is correspondingly arranged with the moving window 24.

[0036] The contact support 11 is placed in the first accommodating cavity 21 of the base 2, and the slider 12 connected to the contact support 11 is provided with an insertion interface 23 and is slidably arranged in the dustproof channel 22. The contact support 11 slides in the first accommodating cavity 21 under the guidance of the dustproof channel 22, thereby realizing the sliding connection between the contact support 11 and the base 2; the outer side of the slider 12 is provided with a linkage cavity 13, and the dustproof channel 22 is provided with a movement window 24. The linkage cavity 13 and the movement window 24 are correspondingly arranged, and the cantilever 101 of the side-mounted accessory 100 can pass through The moving window 24 is connected to the linkage cavity 13, realizing the linkage between the auxiliary contact and the moving contact assembly. The moving window 24 plays a role of avoidance when the cantilever 101 moves with the contact support 11; the moving window 24 and the plug interface 23 are staggered, and the arc generated when the moving contact assembly is disconnected will not spray or splash outward through the moving window 24, thereby improving the dielectric properties and safety factor of the contactor. Foreign matter from the outside will not enter the interior of the contactor through the moving window 24, thereby improving the practical reliability of the contactor.

[0037] The base 2 includes a bottom plate 211, and side plates 212 are respectively provided on the opposite sides of the bottom plate 211. Two isolation plates 213 are connected between the two side plates 212. The two isolation plates 213 are arranged at intervals, and a first accommodating cavity 21 is formed between the two isolation plates 213. The dust-proof channel 22 is arranged on the side plates 212. Second accommodating cavities 29 are respectively provided on both sides of the first accommodating cavity 21 on the base 2. A static contact assembly is provided in the second accommodating cavity 29, which provides space for the installation of the static contact assembly. The static contact assembly and the moving contact assembly are respectively installed in their own independent cavities.

[0038] In some embodiments, the bottom of the first accommodating cavity 21 is provided with an installation opening 25, the dustproof channel 22 extends along the height direction a of the first accommodating cavity 21, and one end of the dustproof channel 22 is provided with an insertion port 23 connected with the installation opening 25, one end of the contact support 11 is provided with the installation opening 25 and is placed in the first accommodating cavity 21, and the movement window 24 is provided on the side wall of the dustproof channel 22 opposite to the contact support 11. Along the height direction a of the first accommodating cavity 21, the side of the base 2 provided with the installation opening 25 is the bottom, and the side of the base 2 opposite to the installation opening 25 is the top, the contact support 11 is installed in the first accommodating cavity 21 from the bottom of the base 2, the contact support 11 closes the installation opening 25, the slider 12 closes the insertion port 23, and the slider 12 slides in the dustproof channel 22 to drive the contact support 11 to slide in the first accommodating cavity 21, which can effectively prevent foreign impurities from entering the base 2, and the structure has a dustproof effect and is convenient for installing the contact support 11 on the base 2.

[0039] Guide ribs 14 are respectively provided on opposite sides of each slider 12, and guide grooves corresponding to the guide ribs 14 are provided on the inner side wall of the dustproof channel 22, and the guide ribs 14 are slidably arranged in the guide grooves. When the slider 12 slides in the dustproof channel 22, the guide grooves limit the guide ribs 14, thereby preventing the slider 12 from shaking in the dustproof channel 22, thereby ensuring the stability of the contact support 11 moving along the height direction a of the first accommodating cavity 21, so that the moving contact installed on the contact support 11 can stably contact with the static contact.

[0040] The other two opposite inner side walls of the first accommodating chamber 21 are respectively provided with at least one guide slot 28, and the contact support 11 is provided with a guide slider 15 corresponding to the guide slot 28, and the guide slider 15 is slidably arranged in the guide slot 28. The guide slot 28 plays a role of limiting the guide slider 15, preventing the contact support 11 from shaking in the first accommodating chamber 21 when moving along the height direction a of the first accommodating chamber 21, and increasing the sliding connection area between the contact support 11 and the first accommodating chamber 21, ensuring the stability of the contact support 11 moving along the height direction a of the first accommodating chamber 21, so that the moving contact installed on the contact support 11 can stably contact with the static contact.

[0041] Reference Figure 1 and Figure 2 As shown, the contactor needs to be linked with the auxiliary contact of the side-mounted accessory 100, and the above-mentioned moving window 24 is provided for the cantilever 101 to pass through and is connected with the linkage cavity 13 of the contact support 11, thereby realizing the linkage between the moving contact assembly of the contactor and the auxiliary contact of the side-mounted accessory 100. Then, when installing the side-mounted accessory 100, the side-mounted accessory 100 needs to be fixed on the contactor. Therefore, an installation window 26 is provided on the outer wall of the base 2 on the same side as the moving window 24. The installation window 26 is not connected with the dustproof channel 22 and the first accommodating cavity 21. The installation window 26 is used to snap with the buckle 102 on the side-mounted accessory 100, fix the side-mounted accessory 100 on the contactor, and ensure that the cantilever 101 of the side-mounted accessory 100 is stably connected with the linkage cavity 13. The installation window 26 is not connected with the dustproof channel 22, so as to prevent foreign matter from entering the dustproof channel 22 through the installation window 26 and affecting the sliding of the contact support 11 in the dustproof channel 22. The installation window 26 is also not connected to the first accommodating chamber 21 , so as to prevent foreign matter from entering the first accommodating chamber 21 through the installation window 26 and affecting the disconnection of the moving contact assembly and the static contact assembly, thereby improving the reliability of the contactor.

[0042] In order to improve the stability of the connection between the side-mounted accessory 100 and the contactor, the side wall of the base 2 is provided with at least one mounting groove 27 from the bottom along the height direction a of the first accommodating cavity 21, and the groove wall of each mounting groove 27 is provided with at least one mounting window 26, and the mounting window 26 is connected with the mounting groove 27. The buckle 102 of the side-mounted accessory 100 is snapped into the mounting window 26, and part of the buckle 102 is placed in the mounting groove 27. The buckle 102 is not easy to detach from the mounting window 26, and the mounting groove 27 is not connected with the dustproof channel 22 and the first accommodating cavity 21. Impurities entering the mounting groove 27 through the mounting window 26 will not enter the dustproof channel 22 and the first accommodating cavity 21, and will also be discharged through the notch of the mounting groove 27.

[0043] In order to further improve the stability of the connection between the side-mounted accessory 100 and the contactor, at least two installation grooves 27 are provided on one side of the base 2, and installation grooves 27 are provided on both sides of the moving window 24. The cantilever 101 of the side-mounted accessory 100 is connected to the linkage cavity 13 of the slider 12. The side-mounted accessory 100 is placed on both sides of the cantilever 101 and is provided with buckles 102. The buckles 102 are snapped into the corresponding installation windows 26. When the auxiliary contact is linked with the moving contact assembly, the side-mounted accessory 100 is installed with uniform force, and the side-mounted accessory 100 can be stably fixed on the contactor. The number of the installation windows 26 provided corresponds to the number of buckles 102 provided on the side-mounted accessory 100, and is not specifically limited here.

[0044] In some embodiments, the slider 12 and the contact support 11 are split structures. Specifically, the slider 12 is connected to the contact support 11 by a snap-fit ​​method. The specific snap-fit ​​structure is not limited here. The slider 12 is made of thermoplastic material, which makes the slider 12 wear-resistant and has a long service life, greatly extending the service life of the contact support mechanism. The contact support 11 is made of thermosetting material, which makes the contact support 11 arc-resistant and high-temperature-resistant, ensuring that the contactor is normally disconnected and carries the high current load of the main circuit.

[0045] Figure 4 A schematic diagram of the state of the side-mounted accessory 100 and the contact support 11 when the contactor is not closed in order to connect the contactor to the main circuit of the electrical equipment. Figure 5 It is a schematic diagram of the state of connecting the contactor to the main circuit of the electrical equipment, the contactor being closed, and the side-mounted accessory 100 and the contact support 11.

[0046] This embodiment also provides a contactor, including the above-mentioned contact installation structure.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. The contact installation structure is characterized in that: include: A moving contact assembly comprises a contact support (11), wherein two opposite sides of the contact support (11) are respectively provided with sliders (12), and an outer side surface of at least one of the sliders (12) is provided with a linkage cavity (13), wherein the linkage cavity (13) is used to connect with a cantilever (101) of a side-mounted accessory (100); A base (2), wherein the base (2) is provided with a first accommodating cavity (21), dustproof channels (22) are respectively provided on opposite sides of the first accommodating cavity (21), each of the dustproof channels (22) is respectively provided with a plug interface (23), the slider (12) passes through the plug interface (23) and is slidably arranged in the dustproof channel (22), the contact support (11) is placed in the first accommodating cavity (21), at least one of the dustproof channels (22) is provided with a moving window (24), the moving window (24) and the plug interface (23) are arranged in a staggered manner, and the linkage cavity (13) and the moving window (24) are arranged correspondingly.

2. The contact installation structure according to claim 1, characterized in that: The bottom of the first accommodating cavity (21) is provided with a mounting opening (25), the dustproof channel (22) extends along the height direction (a) of the first accommodating cavity (21), and one end of the dustproof channel (22) is provided with the plug interface (23) connected with the mounting opening (25), one end of the contact support (11) passes through the mounting opening (25) and is placed in the first accommodating cavity (21), and the moving window (24) is arranged on the side wall of the dustproof channel (22) opposite to the contact support (11).

3. The contact installation structure according to claim 1, characterized in that: An installation window (26) is provided on the outer side wall on which the base (2) and the moving window (24) are located on the same side; the installation window (26) is not connected to the dustproof passage (22) and the first accommodating chamber (21); the installation window (26) is used to be snap-connected with a buckle (102) on the side-mounted accessory (100).

4. The contact installation structure according to claim 3, characterized in that: The side wall of the base (2) is provided with at least one installation groove (27) from the bottom along the height direction (a) of the first accommodating cavity (21), and the groove wall of each installation groove (27) is provided with at least one installation window (26).

5. The contact installation structure according to claim 4, characterized in that: At least two installation grooves (27) are provided on one side of the base (2), the installation grooves (27) are provided on both sides of the movement window (24), and the groove wall of each installation groove (27) is provided with at least two installation windows (26).

6. The contact installation structure according to claim 1, characterized in that: Each of the sliders (12) is provided with guide ribs (14) on two opposite sides, and the inner side wall of the dustproof channel (22) is provided with guide grooves corresponding to the guide ribs (14), and the guide ribs (14) are slidably arranged in the guide grooves.

7. The contact installation structure according to claim 1, characterized in that: The other two opposite inner side walls of the first accommodating cavity (21) are each provided with at least one guide slot (28); the contact support (11) is provided with a guide slider (15) corresponding to the guide slot (28); the guide slider (15) is slidably disposed in the guide slot (28).

8. The contact installation structure according to claim 1, characterized in that: The base (2) comprises a bottom plate (211), the two opposite sides of the bottom plate (211) are respectively connected with side plates (212), two isolation plates (213) are connected between the two side plates (212), the two isolation plates (213) are arranged at intervals, and the first accommodating cavity (21) is formed between the two isolation plates (213), the dustproof channel (22) is arranged on the side plates (212), and second accommodating cavities (29) are respectively arranged on both sides of the first accommodating cavity (21) on the base (2), and a static contact assembly is arranged in the second accommodating cavity (29).

9. The contact installation structure according to claim 1, characterized in that: The slider (12) is snap-connected with the contact support (11); the slider (12) is made of a thermoplastic material, and the contact support (11) is made of a thermosetting material.

10. A contactor, characterized in that A contact mounting structure comprising any one of claims 1-9.

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