An auxiliary contact of a contactor

Abstract

This utility model proposes an auxiliary contact for a contactor, including a first insulating shell, a second insulating shell, a contact support assembly, a first stationary contact, and a second stationary contact. The first insulating shell is provided with a hook and an elastic buckle. The first stationary contact is mounted on the first insulating shell, and the second stationary contact is mounted on the first insulating shell and located directly below the first stationary contact. The contact support assembly is movably mounted between the first and second stationary contacts. The first and second insulating shells are fastened together. The hook protrudes from the second insulating shell and hangs on the contactor. The elastic buckle is used to lock with a buckle on the contactor. The contact support assembly protrudes from the second insulating shell and is used for contact support connection inside the contactor. The auxiliary contact is detachably mounted on the contactor, eliminating the need for auxiliary tools and making assembly and disassembly very convenient.

Description

Technical Field

[0001] This utility model relates to the field of electrical switch technology, and in particular to an auxiliary contact of a contactor. Background Technology

[0002] Auxiliary contacts are mainly used in control circuits. They are installed on contactors as accessories and are often used to help transmit operating status signals or form electrical interlocks between switches. However, existing auxiliary contacts require a screwdriver or other disassembly tools to remove them from the contactor, making disassembly and assembly very inconvenient.

[0003] Therefore, it is necessary to provide an auxiliary contact for the contactor to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary contact for a contactor. The auxiliary contact can be detachably installed on the contactor without the need for auxiliary tools, making it very convenient to install and remove.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: an auxiliary contact of a contactor includes a first insulating shell, a second insulating shell, a contact support assembly, a first stationary contact, and a second stationary contact. The first insulating housing is provided with a hook and a resilient buckle. The first stationary contact is mounted on the first insulating housing, and the second stationary contact is mounted on the first insulating housing and located directly below the first stationary contact. The contact support assembly is movably mounted between the first stationary contact and the second stationary contact. The first insulating housing and the second insulating housing are fastened together. The hook protrudes from the second insulating housing and hangs on the contactor. The resilient buckle is used to lock with the buckle on the contactor. The contact support assembly protrudes from the second insulating housing and is used to connect with the contact support inside the contactor.

[0006] Preferably, the top of the first insulating shell is provided with a first wire passage groove, the first stationary contact is located directly below the first wire passage groove, the top of the second insulating shell is provided with a second wire passage groove, and when the first insulating shell and the second insulating shell are fastened together, the first wire passage groove and the second wire passage groove are spliced ​​together to form a wire passage hole.

[0007] Preferably, a third wire-passing groove is provided at the middle edge of the first insulating shell, the second stationary contact is located directly below the third wire-passing groove, and a fourth wire-passing groove is provided at the middle edge of the second insulating shell. When the first insulating shell and the second insulating shell are fastened together, the third wire-passing groove and the fourth wire-passing groove are spliced ​​together to form a wire-passing hole.

[0008] Preferably, the contact support assembly includes a first moving contact, a second moving contact, a first elastic element, a second elastic element, and a contact support; The contact support is movably mounted between the first stationary contact and the second stationary contact. The contact support has an upper groove and a lower groove, with a fixing block positioned between the upper and lower grooves. The first moving contact is movably mounted at the top of the upper groove, and the second moving contact is movably mounted at the bottom of the lower groove. The first and second moving contacts are distributed between the first and second stationary contacts. The first elastic element is installed between the top surface of the first moving contact and the fixed block, and the second elastic element is installed between the bottom surface of the second moving contact and the fixed block.

[0009] Preferably, the upper groove has an upper guide rail on its side wall, the lower groove has a lower guide rail on its side wall, and the fixing block is installed between the upper guide rail and the lower guide rail.

[0010] Preferably, the front side of the contact support is provided with a fixing rod that protrudes outside the second insulating housing.

[0011] Preferably, the top surface of the fixing block is provided with an upper fixing member, the bottom surface of the fixing block is provided with a lower fixing member, one end of the first elastic member is sleeved on the upper fixing member, and one end of the second elastic member is sleeved on the lower fixing member.

[0012] Preferably, the first insulating shell has a first rectangular hole in the middle, and a first square hole on each side of the first rectangular hole. The bottom of the first insulating shell has two grooves. The second insulating shell has a second rectangular hole in the middle, and two spaced second square holes on the bottom. The hook protrudes outside the second square hole and hooks onto the mounting port of the contactor. The fixing rod supporting the contact protrudes outside the second rectangular hole.

[0013] Compared with existing technologies, the advantages are as follows: the auxiliary contact is designed with hooks and elastic clips, so the auxiliary contact is hung on the contactor by hooks (removable installation) and fastened to the contactor by elastic clips. No auxiliary tools are needed for disassembly and assembly, making disassembly and assembly very convenient.

[0014] Other features and advantages of this invention will be set forth in the following description, and in part will be apparent from the description, or may be learned by practice of the invention. The features and advantages of this invention may be realized and obtained by means of the elements and combinations specifically pointed out in the appended claims. These and other features of this invention will become more apparent from the following description and the appended claims, or may be learned by practice of the embodiments described herein. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the auxiliary contact of the contactor of this utility model.

[0017] Figure 2 for Figure 1 The diagram shows a partial structural diagram of the auxiliary contact of the contactor.

[0018] Figure 3 for Figure 2 The diagram shows a partial structural diagram of the auxiliary contact of the contactor.

[0019] Figure 4 for Figure 1 The diagram shows the structure of the first insulating shell.

[0020] Figure 5 for Figure 1 The diagram shows the structure of the second insulating shell. Detailed Implementation

[0021] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the present utility model and are not intended to limit the present utility model.

[0022] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Please see Figures 1 to 5 This utility model provides an auxiliary contact for a contactor, including a first insulating shell 1, a second insulating shell 2, a contact support assembly 3, a first stationary contact 4, and a second stationary contact 5. The first insulating housing 1 is provided with a hook 11 and an elastic buckle 12. The first stationary contact 4 is fixedly installed on the first insulating housing 1. The second stationary contact 5 is fixedly installed on the first insulating housing 1 and located directly below the first stationary contact 4. The contact support assembly 3 is movably installed between the first stationary contact 4 and the second stationary contact 5. The first insulating housing 1 and the second insulating housing 2 are fastened together. The hook 11 protrudes from the second insulating housing 2 and hangs on the contactor. The elastic buckle 12 is used to lock with the buckle on the contactor. The contact support assembly 3 protrudes from the second insulating housing 2 and is used to connect with the contact support inside the contactor.

[0025] Thus, when installing the auxiliary contact, since the contactor has a pre-drilled mounting port and a locking slot, simply fasten the hook 11 to the mounting port and apply force to the elastic buckle 12 to lock it in place to complete the installation. When removing the auxiliary contact, apply force to the elastic buckle 12 to unlock it from the locking slot, remove the auxiliary contact, and completely detach the hook 11 from the mounting port to complete the removal.

[0026] When the contactor is energized, the coil inside the contactor generates a magnetic field, and the contact support inside the contactor moves downward. Through the contact support inside the contactor, the contact support component 3 of the auxiliary contact moves downward and contacts the second stationary contact 5. The circuit circuit between the contact support component 3 inside the auxiliary contact and the second stationary contact 5 is connected. When the contactor is de-energized, the magnetic field of the coil inside the contactor disappears, and the contact support inside the contactor moves upward to its original position. Through the contact support inside the contactor, the contact support assembly 3 of the auxiliary contact moves upward to contact the first stationary contact 4, and the circuit circuit of the contact support assembly 3 inside the auxiliary contact and the first stationary contact 4 is connected. In this way, the circuit circuit inside the auxiliary contact can be connected or disconnected, realizing the synchronization of the connection or disconnection of the circuit circuit inside the contactor.

[0027] In a preferred embodiment, the top of the first insulating shell 1 is provided with a first wire passage groove 13, the first stationary contact 4 is located directly below the first wire passage groove 13, the top of the second insulating shell 2 is provided with a second wire passage groove, and when the first insulating shell 1 and the second insulating shell 2 are fastened together, the first wire passage groove 13 and the second wire passage groove are spliced ​​together to form a circular wire passage hole.

[0028] It should be noted that in this embodiment, there are two first wire passage slots 13, two second wire passage slots, and two first stationary contacts 4. The two first stationary contacts 4 are installed close to the top of the first insulating shell 1, and the two first stationary contacts 4 are distributed at intervals on both sides of the moving contact assembly 3.

[0029] The external auxiliary circuit leads pass through the aforementioned wire holes and are electrically connected to the first stationary contact 4. The contact support assembly 3 moves upward and contacts the two first stationary contacts 4, thus connecting the circuit circuit of the two first stationary contacts 4 inside the auxiliary contact. At this time, the circuit circuit of the second stationary contact 5 is disconnected.

[0030] In a preferred embodiment, a third wire passage groove 14 is provided at the middle edge of the first insulating shell 1, the second stationary contact 5 is located directly below the third wire passage groove 14, and a fourth wire passage groove is provided at the middle edge of the second insulating shell 2. When the first insulating shell 1 and the second insulating shell 2 are fastened together, the third wire passage groove 14 and the fourth wire passage groove are spliced ​​together to form a circular wire passage hole.

[0031] It should be noted that in this embodiment, there are two third wire passage slots 14, two fourth wire passage slots, and two second stationary contacts 5. The two second stationary contacts 5 are located below the third wire passage slots 14 and installed close to the bottom of the first insulating shell 1, and the two second stationary contacts 5 are spaced apart on both sides of the moving contact assembly 3.

[0032] The external auxiliary circuit leads pass through the aforementioned wire holes and are electrically connected to the second stationary contact 5. The contact support assembly 3 moves downward to contact the two second stationary contacts 5, thereby connecting the circuit circuit of the two second stationary contacts 5 inside the auxiliary contact, while the circuit circuit of the first stationary contact 4 is disconnected.

[0033] In a preferred embodiment, the contact support assembly 3 includes a first moving contact 31, a second moving contact 32, a first elastic element 33, a second elastic element 34, and a contact support 35; The contact support 35 is movably mounted between the first stationary contact 4 and the second stationary contact 5. The contact support 35 has an upper groove 351 and a lower groove 352, with a fixing block 353 positioned between the upper groove 351 and the lower groove 352. The first moving contact 31 is movably mounted at the top of the upper groove 351, and the second moving contact 32 is movably mounted at the bottom of the lower groove 352. The first moving contact 31 and the second moving contact 32 are distributed between the first stationary contact 4 and the second stationary contact 5. The first elastic element 33 is installed between the top surface of the first moving contact 31 and the fixed block 353, and the second elastic element 34 is installed between the bottom surface of the second moving contact 32 and the fixed block 353.

[0034] In a preferred embodiment, the side walls (left and right sides) of the upper groove 351 are provided with upper guide rails 354, and the side walls (left and right sides) of the lower groove 352 are provided with lower guide rails 355. The fixing block 353 Install Between the upper guide rail 354 and the lower guide rail 355.

[0035] In a preferred embodiment, the contact support 35 has a fixing rod 356 protruding from the outside of the second insulating shell 2 on its front side. Thus, when the contact support 35 moves upward, the first moving contact 31 simultaneously contacts the two first stationary contacts 4, connecting the circuit of the two first stationary contacts 4 within the auxiliary contact; when the contact support 35 moves downward, the second moving contact 32 simultaneously contacts the two second stationary contacts 5, connecting the circuit of the two second stationary contacts 5 within the auxiliary contact. The first elastic element 31 and the second elastic element 32 can act as buffers during this process.

[0036] In a preferred embodiment, the top surface of the fixing block 353 is provided with an upper fixing member 3531, the bottom surface of the fixing block 353 is provided with a lower fixing member 3532, one end of the first elastic member 33 is sleeved on the upper fixing member 3531, and one end of the second elastic member 34 is sleeved on the lower fixing member 3532.

[0037] This facilitates the installation of the first elastic element 33 and the second elastic element 34, can limit the movement of the first elastic element 33 and the second elastic element 34, and can also prevent the first elastic element 33 and the second elastic element 34 from falling off when they move within the contact support 35.

[0038] In a preferred embodiment, a first rectangular hole 15 is provided in the middle of the first insulating shell 1, and a first square hole 16 is provided on each side of the first rectangular hole 15. Two grooves 17 are provided at the bottom of the first insulating shell 1. A second rectangular hole 23 is provided in the middle of the second insulating shell 2, and two spaced second square holes 24 are provided at the bottom of the second insulating shell 2. The hook 11 protrudes outside the second square hole 24 and is hooked at the mounting port of the contactor. The fixing rod 356 of the contact support 35 protrudes outside the second rectangular hole 23, which facilitates the installation of the auxiliary contact of the contactor on the corresponding contactor. The fixing rod 356 is inserted into the contactor and connected to the contact support inside the contactor. It moves up and down under the drive of the contact support inside the contactor.

[0039] This invention is not limited to the description in the specification and embodiments. Therefore, other advantages and modifications can be readily realized by those skilled in the art. Thus, without departing from the spirit and scope of the general concept as defined by the claims and their equivalents, this invention is not limited to the specific details, representative devices and illustrated examples shown and described herein.

Claims

1. An auxiliary contact of a contactor, characterized by, It includes a first insulating shell (1), a second insulating shell (2), a contact support assembly (3), a first stationary contact (4), and a second stationary contact (5). The first insulating shell (1) is provided with a hook (11) and an elastic buckle (12). The first stationary contact (4) is installed on the first insulating shell (1). The second stationary contact (5) is installed on the first insulating shell (1) and located directly below the first stationary contact (4). The contact support assembly (3) is movably installed between the first stationary contact (4) and the second stationary contact (5). The first insulating shell (1) and the second insulating shell (2) are fastened together. The hook (11) protrudes from the second insulating shell (2) and hangs on the contactor. The elastic buckle (12) is used to lock with the buckle on the contactor. The contact support assembly (3) protrudes from the second insulating shell (2) and is used to connect with the contact support inside the contactor.

2. The contactor auxiliary contact of claim 1, wherein The first insulating shell (1) has a first wire passage groove (13) on its top. The first stationary contact (4) is located directly below the first wire passage groove (13). The second insulating shell (2) has a second wire passage groove on its top. When the first insulating shell (1) and the second insulating shell (2) are fastened together, the first wire passage groove (13) and the second wire passage groove are spliced ​​together to form a wire passage hole.

3. The contactor auxiliary contact of claim 1, wherein A third wire passage groove (14) is provided at the middle edge of the first insulating shell (1), and the second stationary contact (5) is located directly below the third wire passage groove (14). A fourth wire passage groove is provided at the middle edge of the second insulating shell (2). When the first insulating shell (1) and the second insulating shell (2) are fastened together, the third wire passage groove (14) and the fourth wire passage groove are spliced ​​together to form a wire passage hole.

4. The contactor auxiliary contact of claim 1, wherein, The contact support assembly (3) includes a first moving contact (31), a second moving contact (32), a first elastic element (33), a second elastic element (34), and a contact support (35); The contact support (35) is movably installed between the first stationary contact (4) and the second stationary contact (5), and the contact support (35) is provided with an upper groove (351) and a lower groove (352). A fixing block (353) is provided between the upper groove (351) and the lower groove (352). The first moving contact (31) is movably installed at the top of the upper groove (351), and the second moving contact (32) is movably installed at the bottom of the lower groove (352). The first moving contact (31) and the second moving contact (32) are distributed between the first stationary contact (4) and the second stationary contact (5). The first elastic element (33) is installed between the top surface of the first moving contact (31) and the fixed block (353), and the second elastic element (34) is installed between the bottom surface of the second moving contact (32) and the fixed block (353).

5. The contactor auxiliary contact of claim 4, wherein, The upper groove (351) is provided with an upper guide rail (354) on its side wall, and the lower groove (352) is provided with a lower guide rail (355) on its side wall. The fixing block (353) is installed between the upper guide rail (354) and the lower guide rail (355).

6. The contactor auxiliary contact of claim 4, wherein, The contact support (35) has a fixing rod (356) protruding from the outside of the second insulating shell (2) on the front side.

7. The contactor auxiliary contact of claim 4, wherein The top surface of the fixing block (353) is provided with an upper fixing member (3531), and the bottom surface of the fixing block (353) is provided with a lower fixing member (3532). One end of the first elastic member (33) is sleeved on the upper fixing member (3531), and one end of the second elastic member (34) is sleeved on the lower fixing member (3532).

8. The contactor auxiliary contact of claim 4, wherein, The first insulating shell (1) has a first rectangular hole (15) in the middle, and a first square hole (16) is opened on each side of the first rectangular hole (15). The bottom of the first insulating shell (1) has two grooves (17). The second insulating shell (2) has a second rectangular hole (23) in the middle, and two spaced second square holes (24) are opened on the bottom of the second insulating shell (2). The hook (11) protrudes outside the second square hole (24) and is hooked at the mounting port of the contactor. The fixing rod (356) of the contact support (35) protrudes outside the second rectangular hole (23).

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