Auxiliary contact module, contactor and distribution box

Abstract

The utility model discloses an auxiliary contact module, a contactor and a distribution box, and relates to the technical field of electric appliance switches. The auxiliary contact module comprises a shell, a photoelectric module fixedly arranged in the shell and an action support slidably arranged in the shell, the photoelectric module is used for being connected with an electric loop, the end of the action support extends out of the shell and is connected with an installation support of a contactor, the action support is provided with a shading part, and the shading part is connected with the shell. The mounting bracket is driven to drive the action bracket to move, so that the shading part extends into or out of the space between a light emitting electrode and a light receiving electrode of the photoelectric module, and the shading part is used for shading or exposing light emitted by the light emitting electrode so as to correspondingly control the disconnection or connection of the electric loop. The auxiliary contact module, the contactor and the distribution box can solve the problem of feedback signal loss caused by contact surface oxidation and poor dustproof performance of a traditional contactor auxiliary contact module.

Description

Technical Field

[0001] The present application relates to the technical field of electrical switches, and in particular to an auxiliary contact module, a contactor and a distribution box. Background Art

[0002] Usually, the contactor auxiliary contact module is installed in combination with the contactor and is widely used in signal transmission and feedback. With the development of the increasingly widely used programmable logic control (PLC) technology, the reliability of the auxiliary contact has become increasingly important in weak current environments, especially for harsh industrial conditions.

[0003] At present, most traditional contactor auxiliary contact modules use silver alloy contacts, and the contact surface is easily oxidized, especially in the transmission process of weak signals 5mA and below. Due to the increase in contact impedance caused by contact surface oxidation and the intrusion of dust caused by insufficient product dustproof performance, feedback signal loss is prone to occur. Utility Model Content

[0004] The purpose of the present application is to provide an auxiliary contact module, a contactor and a distribution box, which can solve the problem of feedback signal loss caused by contact surface oxidation and poor product dustproof performance of the traditional contactor auxiliary contact module.

[0005] The embodiment of the present application is implemented as follows:

[0006] In the first aspect of the embodiments of the present application, there is provided an auxiliary contact module, comprising a housing, a photoelectric module fixedly disposed in the housing, and an action bracket slidably disposed in the housing, wherein the photoelectric module is used to access an electrical circuit, the end of the action bracket extends out of the housing and is connected to a mounting bracket of the contactor, a light shielding portion is provided on the action bracket, and the mounting bracket is driven to drive the action bracket to move so that the light shielding portion extends into or out of between the light-emitting electrode and the light-receiving electrode of the photoelectric module, and the light shielding portion is used to shield or expose the light emitted by the light-emitting electrode to correspondingly control the disconnection or connection of the electrical circuit. The auxiliary contact module can solve the problem of feedback signal loss caused by oxidation of the contact surface and poor dustproof performance of the product in conventional contactor auxiliary contact modules.

[0007] Optionally, the optoelectronic module includes a circuit board and a slot-type photoelectric switch connected to the circuit board, the circuit board is fixedly installed in the housing by fasteners, and the circuit board is connected to an external power supply to power the slot-type photoelectric switch through the circuit board.

[0008] Optionally, there are multiple photoelectric modules, and the multiple photoelectric modules are respectively used to access different power circuits. The shading parts are provided on opposite sides of the action bracket, and the multiple photoelectric modules are respectively arranged on opposite sides of the action bracket.

[0009] Optionally, the movement direction of the action bracket is perpendicular to the connection direction of the light-emitting electrode and the light-receiving electrode.

[0010] Optionally, at least one wiring channel is provided on the housing, and the auxiliary contact module further comprises at least one pair of wiring terminals and wiring screws, the wiring terminals are connected to the photoelectric module, and the wiring screws are passed through the wiring channel to be connected to the wiring terminals.

[0011] Optionally, the shell includes a base and a cover that are interlocked with each other, the base is provided with a wiring window and an isolation rib, the cover is provided with a protective wall, the isolation rib and the protective wall are cross-arranged to separate the interior of the shell into a first chamber and a second chamber that are independent of each other through the isolation rib and the protective wall to respectively accommodate the wiring terminal and the optoelectronic module, and the wiring window is used for the wire to pass through so that the wire extends into the first chamber to be connected to the wiring terminal.

[0012] Optionally, an action window is provided on the base, and an end of the action bracket extends out of the shell through the action window, and the end of the action bracket is a hook-shaped structure.

[0013] Optionally, the cover is provided with an inspection window, and the inspection window is provided with a dust cover and / or transparent glass.

[0014] In a second aspect of the embodiment of the present application, a contactor is provided, comprising the auxiliary contact module mentioned above. The auxiliary contact module can solve the problem of feedback signal loss caused by oxidation of the contact surface and poor product dustproof performance of the auxiliary contact module of the traditional contactor.

[0015] In a third aspect of the embodiment of the present application, a distribution box is provided, comprising the above-mentioned contactor. The auxiliary contact module can solve the problem of feedback signal loss caused by oxidation of the contact surface and poor dustproof performance of the conventional contactor auxiliary contact module.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The auxiliary contact module includes a shell, a photoelectric module fixedly arranged in the shell, and an action bracket slidably arranged in the shell, the photoelectric module is used to access the power circuit, the end of the action bracket extends out of the shell and is connected to the mounting bracket of the contactor, and a light shielding portion is arranged on the action bracket, and the mounting bracket is driven to drive the action bracket to move so that the light shielding portion extends into or extends between the light-emitting electrode and the light-receiving electrode of the photoelectric module, and the light shielding portion is used to block or expose the light emitted by the light-emitting electrode to control the disconnection or connection of the power circuit accordingly. Compared with the traditional auxiliary contact module that uses the mutual cooperation of silver alloy contacts and static contacts to control the connection and disconnection of the power circuit, the auxiliary contact module provided by the present application controls the connection and disconnection of the power circuit through the mutual cooperation of the light-emitting electrode and the light-receiving electrode of the photoelectric module, thereby improving the reliability of the connection of the power circuit in a weak signal transmission environment, and ensuring the dustproof performance of the product through the shell, thereby solving the problem of feedback signal loss caused by oxidation of the contact surface and poor dustproof performance of the product in the traditional contactor auxiliary contact module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 An exploded view of the auxiliary contact module provided in an embodiment of the present application;

[0020] Figure 2 A cross-sectional view of an auxiliary contact module provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of the optoelectronic module and the action bracket provided in the embodiment of the present application;

[0022] Figure 4 A schematic diagram of the structure of the cover provided in the embodiment of the present application;

[0023] Figure 5 A schematic diagram of the structure of the base provided in an embodiment of the present application.

[0024] Icons: 100-auxiliary contact module; 10-housing; 11-base; 111-isolating rib; 112-action window; 113-first clamping part; 12-cover; 121-wiring window; 122-protective wall; 123-inspection window; 124-dust cover; 125-second clamping part; 13-wiring channel; 20-photoelectric module; 21-circuit board; 22-slot type photoelectric switch; 221-light-emitting electrode; 222-light-receiving electrode; 30-action bracket; 31-shading part; 40-wiring terminal; 50-wiring screw; 60-fastener. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Please refer to Figures 1 to 5 The embodiment of the present application provides an auxiliary contact module 100, including a housing 10, a photoelectric module 20 fixedly disposed in the housing 10, and an action bracket 30 slidably disposed in the housing 10. The photoelectric module 20 is used to access the power circuit. The end of the action bracket 30 extends out of the housing 10 and is connected to the mounting bracket of the contactor. A light shielding portion 31 is provided on the action bracket 30. The mounting bracket is driven to drive the action bracket 30 to move so that the light shielding portion 31 extends into or extends between the light-emitting electrode 221 and the light-receiving electrode 222 of the photoelectric module 20. The light shielding portion 31 is used to block or expose the light emitted by the light-emitting electrode 221 to correspondingly control the disconnection or connection of the power circuit. The auxiliary contact module 100 can solve the problem of feedback signal loss caused by oxidation of the contact surface and poor dustproof performance of the product in the auxiliary contact module of the traditional contactor.

[0032] It should be noted that if Figure 1 As shown, the auxiliary contact module 100 includes a housing 10, a photoelectric module 20 and an action bracket 30, so that the housing 10 provides installation support and dust protection for the photoelectric module 20 and the action bracket 30. For example, Figure 4 and Figure 5 As shown, in this embodiment, the shell 10 includes a base 11 and a cover 12 that are interlocked, so that the base 11 and the cover 12 together form an installation cavity for accommodating the optoelectronic module 20 and the action bracket 30. In the actual assembly process, the optoelectronic module 20 and the action bracket 30 can be first installed in the base 11, and then the cover 12 is interlocked with the base 11 to facilitate the assembly operation of each component.

[0033] Specifically, the photoelectric module 20 is fixedly arranged in the shell 10, and the photoelectric module 20 is used to connect to the power circuit to control the on and off of the power circuit through the photoelectric module 20, thereby improving the reliability of the auxiliary contact module 100 in a weak current environment. The action bracket 30 is slidably arranged in the shell 10, and the end of the action bracket 30 extends out of the shell 10 and is connected to the mounting bracket of the contactor. Therefore, when the contactor is actuated, the mounting bracket is driven to drive the action bracket 30 to move relative to the shell 10. Since the photoelectric module 20 is fixedly arranged in the shell 10, the mounting bracket can drive the action bracket 30 to move relative to the photoelectric module 20.

[0034] like Figure 2 and Figure 3 As shown, a shading portion 31 is provided on the action bracket 30. When the mounting bracket is driven to drive the action bracket 30 to move toward the side away from the contactor, the shading portion 31 can be extended between the light-emitting electrode 221 and the light-receiving electrode 222 of the photoelectric module 20, thereby the light emitted by the light-emitting electrode 221 can be shielded by the shading portion 31. At this time, the light-receiving electrode 222 cannot receive the light emitted by the light-emitting electrode 221, and the corresponding control power circuit can be in a disconnected state; when the mounting bracket is driven to drive the action bracket 30 to move toward the side close to the contactor, the shading portion 31 can be extended between the light-emitting electrode 221 and the light-receiving electrode 222 of the photoelectric module 20, thereby the light emitted by the light-emitting electrode 221 can be exposed through the shading portion 31. At this time, the light-receiving electrode 222 can receive the light emitted by the light-emitting electrode 221, and the corresponding control power circuit can be connected.

[0035] Compared with the traditional auxiliary contact module that uses the cooperation between silver alloy contacts and static contacts to control the on-off of the electrical circuit, the auxiliary contact module 100 provided in the present application controls the on-off of the electrical circuit through the cooperation between the light-emitting electrode 221 and the light-receiving electrode 222 of the photoelectric module 20, thereby improving the reliability of the connection of the electrical circuit in a weak signal transmission environment, and ensuring the dustproof performance of the product through the shell 10, thereby solving the problem of feedback signal loss caused by oxidation of the contact surface and poor dustproof performance of the product in the traditional contactor auxiliary contact module.

[0036] like Figures 1 to 3 As shown, the photoelectric module 20 includes a circuit board 21 and a slot-type photoelectric switch 22 connected to the circuit board 21. The circuit board 21 is fixedly installed in the housing 10 by a fastener 60. The circuit board 21 is connected to an external power supply to supply power to the slot-type photoelectric switch 22 through the circuit board 21, thereby ensuring the normal operation of the slot-type photoelectric switch 22.

[0037] For example, Figure 3As shown, in this embodiment, the circuit board 21 includes a first sub-circuit board 21 and a second sub-circuit board 21. The first sub-circuit board 21 is arranged along a direction perpendicular to the connection direction of the base 11 and the cover 12, so as to facilitate connection with the wiring terminal 40 through the first sub-circuit board 21, and the second sub-circuit board 21 is arranged along a direction parallel to the connection direction of the base 11 and the cover 12, so as to facilitate connection with the slot type photoelectric switch 22 through the second sub-circuit board 21.

[0038] Regarding the specific selection of the slot-type photoelectric switch 22, those skilled in the art should be able to make reasonable selections and designs according to actual conditions, and no specific restrictions are made here. It should be noted that since the slot-type photoelectric switch 22 is an open switch, the product consistency is poor, so the photoelectric module 20 can also include a MOS tube to control the MOS tube to amplify the current through the slot-type photoelectric switch 22, and since the MOS tube is a voltage-controlled device, the slot-type photoelectric switch 22 only needs to flow through a very small current to control the switch of the MOS tube, so that a larger current can pass through.

[0039] Alternatively, if Figure 1 and Figure 3 As shown, there are multiple photoelectric modules 20, which are respectively used to access different power circuits. Shading parts 31 are provided on opposite sides of the action bracket 30, and the multiple photoelectric modules 20 are respectively arranged on opposite sides of the action bracket 30.

[0040] For example, Figure 1 and Figure 3 As shown, there are three slot-type photoelectric switches 22, and the three slot-type photoelectric switches 22 are respectively used to connect to different power circuits to meet the use requirements of the contactor. At this time, light shielding parts 31 are provided on opposite sides of the action bracket 30, wherein two slot-type photoelectric switches 22 are stacked along the connecting direction of the base 11 and the cover 12, and are respectively arranged on opposite sides of the action bracket 30 with another slot-type photoelectric switch 22, so that the light shielding parts 31 located on opposite sides of the action bracket 30 can shield the light emitted by the light-emitting electrode 221 for the three slot-type photoelectric switches 22.

[0041] Preferably, if Figure 2 and Figure 3 As shown, the movement direction of the action bracket 30 is perpendicular to the connection direction of the light-emitting electrode 221 and the light-receiving electrode 222. The advantage of this design is that the space occupied by the action bracket 30 and the photoelectric module 20 can be reduced, the movement process of the action bracket 30 relative to the photoelectric module 20 can be realized within the minimum occupied space, and the size of the light shielding portion 31 can be avoided to be large. It should be noted that the first sub-circuit board 21 of the photoelectric module 20 is perpendicular to the action bracket 30, and an avoidance groove can be set on the first sub-circuit board 21 to avoid affecting the movement of the action bracket 30.

[0042] Alternatively, if Figures 1 to 4 As shown, at least one wiring channel 13 is provided on the housing 10, and the auxiliary contact module 100 also includes at least one pair of wiring terminals 40 and wiring screws 50, the wiring terminals 40 are connected to the photoelectric module 20, and the wiring screws 50 are passed through the wiring channel 13 to be connected to the wiring terminals 40, so that the photoelectric module 20 can be connected to the power circuit to control the on and off of the power circuit.

[0043] For example, Figure 1 , Figure 4 and Figure 5 As shown, the shell 10 includes a base 11 and a cover 12 that are interlocked with each other, the base 11 is provided with an isolation rib 111, and the cover 12 is provided with a wiring window 121 and a protective wall 122. The isolation rib 111 and the protective wall 122 are cross-arranged to separate the interior of the shell 10 into a first chamber and a second chamber that are independent of each other through the isolation rib 111 and the protective wall 122 to respectively accommodate the wiring terminal 40 and the optoelectronic module 20, and the wiring window 121 is used for the wire to pass through so that the wire extends into the first chamber to connect with the wiring terminal 40.

[0044] For example, Figure 1 , Figure 4 and Figure 5 As shown, the housing 10 includes a first clamping portion 113 provided on the base 11, and a second clamping portion 125 provided on the cover 12, so that the base 11 and the cover 12 are buckled by the first clamping portion 113 and the second clamping portion 125, so that the base 11 and the cover 12 are jointly formed to form an installation cavity for accommodating the optoelectronic module 20 and the action bracket 30, as shown in FIG. Figure 5 As shown, the base 11 is provided with an isolation rib 111. Figure 4 As shown, a protective wall 122 is provided on the cover 12, and the isolation ribs 111 and the protective wall 122 extend in two directions perpendicular to each other, respectively. Thus, the isolation ribs 111 and the protective wall 122 can be cross-arranged to separate the interior of the shell 10 into a first chamber and a second chamber that are independent of each other, so that the first chamber can accommodate the wiring terminal 40 and the second chamber can accommodate the photoelectric module 20, thereby further improving the dustproof performance of the second chamber where the photoelectric switch is located, and avoiding affecting the reliable operation of the photoelectric module 20 due to the poor dustproof performance of the product.

[0045] For example, Figure 5 As shown, an action window 112 is provided on the base 11, and the end of the action bracket 30 extends out of the shell 10 through the action window 112 to prevent the base 11 from interfering with the connection between the action bracket 30 and the mounting bracket of the contactor. The end of the action bracket 30 is a hook-shaped structure to improve the stability and reliability of the connection between the action bracket 30 and the mounting bracket of the contactor.

[0046] Alternatively, if Figure 1 , Figure 2 and Figure 4 As shown, an inspection window 123 is provided on the cover 12 to facilitate the operator to observe the position of the action bracket 30, so as to determine the shielding relationship between the action bracket 30 and the photoelectric module 20, and further clarify the on-off of the power circuit. A dust cover 124 and / or transparent glass is provided on the inspection window 123 to improve the dustproof performance of the product and prevent dust and impurities from entering the second chamber through the inspection window 123.

[0047] The embodiment of the present application further provides a contactor, comprising the above-mentioned auxiliary contact module 100. Since the structure and beneficial effects of the auxiliary contact module 100 have been described in detail in the above-mentioned embodiment, they will not be described in detail here.

[0048] The embodiment of the present application further provides a power distribution box, comprising the above-mentioned contactor. Since the structure and beneficial effects of the contactor have been described in detail in the above-mentioned embodiment, they will not be described in detail here.

[0049] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

Claims

1. An auxiliary contact module, characterized in that: The invention comprises a shell (10), a photoelectric module (20) fixedly arranged in the shell (10), and an action bracket (30) slidably arranged in the shell (10); the photoelectric module (20) is used to connect to an electric circuit; an end of the action bracket (30) extends out of the shell (10) and is connected to a mounting bracket of a contactor; a light shielding portion (31) is provided on the action bracket (30); the mounting bracket is driven to drive the action bracket (30) to move so that the light shielding portion (31) extends into or extends out between the light-emitting electrode (221) and the light-receiving electrode (222) of the photoelectric module (20); the light shielding portion (31) is used to shield or expose the light emitted by the light-emitting electrode (221) so as to correspondingly control the disconnection or connection of the electric circuit.

2. The auxiliary contact module according to claim 1, characterized in that: The photoelectric module (20) comprises a circuit board (21) and a slot-type photoelectric switch (22) connected to the circuit board (21); the circuit board (21) is fixedly mounted in the housing (10) via a fastener (60); the circuit board (21) is connected to an external power source so as to supply power to the slot-type photoelectric switch (22) via the circuit board (21).

3. The auxiliary contact module according to claim 1, characterized in that: The photoelectric modules (20) are multiple in number, and the multiple photoelectric modules (20) are respectively used to connect to different power circuits; the shading portions (31) are provided on opposite sides of the action bracket (30); and the multiple photoelectric modules (20) are respectively provided on opposite sides of the action bracket (30).

4. The auxiliary contact module according to claim 1, characterized in that: The movement direction of the action bracket (30) is perpendicular to the direction of the connection line between the light-emitting electrode (221) and the light-receiving electrode (222).

5. The auxiliary contact module according to claim 1, characterized in that: At least one wiring channel (13) is provided on the housing (10), and the auxiliary contact module (100) further comprises at least one pair of wiring terminals (40) and wiring screws (50), wherein the wiring terminals (40) are connected to the photoelectric module (20), and the wiring screws (50) are passed through the wiring channel (13) to be connected to the wiring terminals (40).

6. The auxiliary contact module according to claim 5, characterized in that: The housing (10) comprises a base (11) and a cover (12) which are interlocked with each other, the base (11) is provided with an isolation rib (111), and the cover (12) is provided with a wiring window (121) and a protective wall (122), the isolation rib (111) and the protective wall (122) are arranged crosswise, so that the interior of the housing (10) is divided into a first chamber and a second chamber which are independent of each other by the isolation rib (111) and the protective wall (122), so as to respectively accommodate the wiring terminal (40) and the photovoltaic module (20), and the wiring window (121) is used for a wire to pass through so that the wire extends into the first chamber to be connected with the wiring terminal (40).

7. The auxiliary contact module according to claim 6, characterized in that: An action window (112) is provided on the base (11), and an end of the action bracket (30) extends out of the shell (10) through the action window (112), and the end of the action bracket (30) is in a hook-shaped structure.

8. The auxiliary contact module according to claim 6, characterized in that: The cover (12) is provided with an inspection window (123), and the inspection window (123) is provided with a dust cover (124) and / or transparent glass.

9. A contactor, characterized in that: The auxiliary contact module (100) comprises any one of claims 1 to 8.

10. A distribution box, characterized in that: Comprising the contactor as claimed in claim 9.

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