Anti-interference motor protector

Abstract

The utility model discloses an anti-interference motor protector, which comprises a protector body, a receiving module and a connecting line, the protector body is connected with the receiving module through the connecting line, the protector body is provided with a display module, the display module is fixedly connected with the protector body, and the inner wall of the protector body is provided with an anti-interference layer. A body PCB is arranged in the protector body, conductive silica gel and a plurality of electronic elements are arranged on the body PCB, the conductive silica gel covers the plurality of electronic elements, and the plurality of electronic elements are classified and matched with the conductive silica gel to form a strong current area, a weak current area, a high-frequency electronic component area, a low-frequency electronic component area and an information processing area which are mutually independent. The information processing area is respectively connected with the four areas through circuit lines, a plurality of electronic elements on the PCB are classified into a plurality of independent working areas, and the conductive silica gel covers each independent area, so that an electromagnetic field generated when the electronic elements in each area work cannot interfere with normal work of the electronic elements in other areas.

Description

Technical Field

[0001] The utility model relates to the field of motor protectors, in particular to an anti-interference motor protector. Background Art

[0002] A popular motor protector on the market is designed to prevent three-phase motors from burning due to phase failure, overvoltage and overcurrent during operation. It contains a phase failure detection circuit and an overcurrent detection circuit. It uses an electromagnetic induction coil to convert the three-phase line current and rectification into a phase failure or overload sampling signal. After amplification, the execution circuit is driven to cut off the motor control circuit. When in use, the three-phase power cord of the motor is inserted into the three insulating material holes corresponding to the inductor coil on the protector housing. The internal electronic components of the motor protector have a complex structure. The motor protectors currently on the market cannot effectively resist the electromagnetic interference from the motor protector, which makes the motor insufficient in dealing with emergencies during use. In addition, the internal electromagnetic interference can easily cause the motor protector to display errors, delaying the timely remedial measures for the motor, causing the motor to stop suddenly, affecting industrial production. Utility Model Content

[0003] The purpose of the utility model is to provide a method to solve the problems raised in the above background technology.

[0004] The technical solution of the utility model is as follows: an anti-interference motor protector, comprising a protector body, a receiving module and a connecting line, wherein the protector body is connected to the receiving module via a connecting line, and is characterized in that: a display module is provided on the protector body, the display module is fixedly connected to the protector body, an anti-interference layer is provided on the inner wall of the protector body, a body PCB board is provided in the protector body, a conductive silica gel and a plurality of electronic components are provided on the body PCB board, the conductive silica gel covers the plurality of electronic components, the plurality of electronic components are classified and matched with the conductive silica gel to form mutually independent strong current area, weak current area, high-frequency electronic component area, low-frequency electronic component area and information processing area, and the information processing area is respectively connected to the strong current area, weak current area, high-frequency electronic component area and low-frequency electronic component area through circuit lines.

[0005] Preferably, the electronic component includes a main body input end, an optocoupler relay and a power supply, the main body input end is electrically connected to the optocoupler relay, the optocoupler relay is provided with a plurality of signal lines, and the plurality of signal lines are respectively connected to a strong current area, a weak current area, a high-frequency electronic component area and a low-frequency electronic component area.

[0006] Preferably, the electronic component further comprises a power supply, and the power supply is provided with a plurality of power lines, and the plurality of power lines are respectively connected to a strong current area, a weak current area, a high-frequency electronic component area and a low-frequency electronic component area.

[0007] Preferably, the conductive silica gel covers the power line and the signal line respectively.

[0008] Preferably, the receiving module is provided with an induction hole, an induction coil is nested outside the induction hole, and the induction coil is electrically connected to the induction PCB board.

[0009] Preferably, the induction PCB board is provided with an optocoupler relay, an induction output terminal and conductive silica gel, the induction output terminal is connected to the optocoupler relay through a circuit line, and the conductive silica gel covers the circuit line used to connect the two.

[0010] Preferably, the display module is provided with buttons and a display screen.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: by classifying several electronic components on the PCB board into multiple independent working areas, conductive silicone is covered in each independent area, so that the electromagnetic field generated by the electronic components in each area when working cannot interfere with the normal operation of electronic components in other areas.

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following specifically cites the preferred embodiments and describes them in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a three-dimensional diagram of the structure of the utility model from another direction.

[0015] Figure 3 This is a schematic diagram of the structure of the receiving module of the present utility model.

[0016] Figure 4 This is a schematic diagram of the main body PCB board structure of the utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the protector body of the utility model.

[0018] Among them: 1. Protector body; 101. First wiring port; 102. Body PCB board; 103. Body input terminal; 104. Signal line; 105. Anti-interference layer; 2. Receiving module; 201. Sensing hole; 202. Second wiring port; 203. Sensing coil; 204. Sensing PCB board; 205. Sensing output terminal; 3. Display module; 301. Button; 302. Display screen; 4. Connecting line; 5. Optocoupler relay; 6. Conductive silica gel; 7. Power supply; 701. Power line; 8. Strong current area; 9. Weak current area; 10. High-frequency electronic components area; 11. Low-frequency electronic components area; 12. Information processing area. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] An anti-interference motor protector comprises a protector body 1, a receiving module 2 and a connecting line 4, wherein the protector body 1 is connected to the receiving module 2 via the connecting line 4, and is characterized in that: a display module 3 is provided on the protector body 1, the display module 3 is fixedly connected to the protector body 1, an anti-interference layer 105 is provided on the inner wall of the protector body 1, a body PCB board 102 is provided in the protector body 1, a conductive silica gel 6 and a plurality of electronic components are provided on the body PCB board 102, the conductive silica gel 6 covers the plurality of electronic components, the plurality of electronic components are classified and matched with the conductive silica gel 6 to form mutually independent strong current areas 8, weak current areas 9, high-frequency electronic component areas 10, low-frequency electronic component areas 11 and information processing areas 12, and the information processing area 12 is respectively connected to the strong current area 8, weak current area 9, high-frequency electronic component area 10 and low-frequency electronic component area 11 via circuit lines.

[0023] like Figure 1-5 As shown, the split three-phase motor protector includes a protector body 1, a receiving module 2 and a connecting line 4, wherein the protector body 1 is connected to the receiving module 2 through the connecting line 4, and the receiving module 2 is used to connect the circuit to be protected. When the protector body 1 receives the electrical signal from the receiving module 2, the body PCB board 102 processes the electrical signal through the strong current area 8, the weak current area 9, the high-frequency electronic component area 10 and the low-frequency electronic component area 11. In addition, the conductive silica gel 6 covers the strong current area 8, the weak current area 9, the high-frequency electronic component area 10 and the low-frequency electronic component area 11, so that the electromagnetic field generated by the electronic components in each area when working cannot interfere with the normal operation of the electronic components in other areas.

[0024] It should be noted that the conductive silicone 6 is a paste-like material that can be covered on the main PCB board 102 by dispensing. In addition, the conductive silicone 6 not only has good anti-electromagnetic interference function, but also has good anti-electrolytic corrosion, which can increase the service life of the battery components.

[0025] The preferred electronic component of this embodiment includes a main body input terminal 103, an optical coupling relay 5 and a power supply 7, the main body input terminal 103 is electrically connected to the optical coupling relay 5, the optical coupling relay 5 is provided with a plurality of signal lines 104, and the plurality of signal lines 104 are respectively connected to the strong current area 8, the weak current area 9, the high-frequency electronic component area 10 and the low-frequency electronic component area 11, the electronic component also includes a power supply 7, the power supply 7 is provided with a plurality of power supply 7 lines, and the plurality of power supply 7 lines are respectively connected to the strong current area 8, the weak current area 9, the high-frequency electronic component area 10 and the low-frequency electronic component area 11, and the conductive silicone 6 covers the power supply 7 line and the signal line 104 respectively.

[0026] like Figure 4As shown, the signal line 104 and the power line 7 are independently arranged, and both the signal line 104 and the power line 7 are covered with conductive silicone 6, which can effectively avoid electromagnetic interference generated on the power line 7 to the signal line 104, causing the motor protector to display errors.

[0027] In this embodiment, the receiving module 2 is preferably provided with a sensing hole 201, and an induction coil 203 is nested outside the sensing hole 201. The induction coil 203 is electrically connected to a sensing PCB board 204. The sensing PCB board 204 is provided with a photocoupler relay 5, a sensing output terminal 205 and a conductive silicone 6. The sensing output terminal 205 is connected to the photocoupler relay 5 through a circuit line, and the conductive silicone 6 covers the circuit line used to connect the two.

[0028] like Figure 3 and 4 As shown, both the main body input terminal 103 and the inductive output terminal 205 are connected with an optical coupler relay 5, which can effectively improve the safety of the connecting line 4 in connecting the protector body 1 and the receiving module 2, and can effectively avoid damage caused by excessive signals transmitted or input to the receiving module 2.

[0029] In addition, the conductive silica gel 6 disposed on the induction PCB board 204 can effectively avoid electromagnetic interference generated during transmission of the induction coil 203 .

[0030] In this embodiment, the display module 3 is preferably provided with a button 301 and a display screen 302 .

[0031] In this embodiment, the staff can intuitively see the current status through the display screen 302 on the display module 3, and operate the display screen 302 through the button 301 to see the data of the specific situation of the current.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An anti-interference motor protector, comprising a protector body (1), a receiving module (2) and a connecting line (4), wherein the protector body (1) is connected to the receiving module (2) via the connecting line (4), and characterized in that: The protector body (1) is provided with a display module (3), the display module (3) is fixedly connected to the protector body (1), the inner wall of the protector body (1) is provided with an anti-interference layer (105), the protector body (1) is provided with a body PCB board (102), the body PCB board (102) is provided with conductive silica gel (6) and a plurality of electronic components, the conductive silica gel (6) covers the plurality of electronic components, the plurality of electronic components are classified and matched with the conductive silica gel (6) to form mutually independent strong current areas (8), weak current areas (9), high-frequency electronic component areas (10), low-frequency electronic component areas (11) and information processing areas (12), and the information processing area (12) is respectively connected to the strong current area (8), weak current area (9), high-frequency electronic component area (10) and low-frequency electronic component area (11) through circuit lines.

2. The anti-interference motor protector according to claim 1 is characterized in that: The electronic component comprises a body input end (103), an optical coupling relay (5) and a power source (7); the body input end (103) is electrically connected to the optical coupling relay (5); a plurality of signal lines (104) are provided on the optical coupling relay (5); and the plurality of signal lines (104) are respectively connected to a strong current area (8), a weak current area (9), a high-frequency electronic component area (10) and a low-frequency electronic component area (11).

3. The anti-interference motor protector according to claim 2 is characterized in that: The electronic component further comprises a power supply (7), the power supply (7) being provided with a plurality of power supply (7) wires, the plurality of power supply (7) wires being respectively connected to a strong current area (8), a weak current area (9), a high frequency electronic component area (10) and a low frequency electronic component area (11).

4. The anti-interference motor protector according to claim 3 is characterized in that: The conductive silica gel (6) covers the power supply (7) line and the signal line (104) respectively.

5. The anti-interference motor protector according to claim 1 is characterized in that: The receiving module (2) is provided with an induction hole (201), an induction coil (203) is nested outside the induction hole (201), and the induction coil (203) is electrically connected to an induction PCB board (204).

6. The anti-interference motor protector according to claim 5, characterized in that: The induction PCB board (204) is provided with an optical coupler relay (5), an induction output end (205) and a conductive silica gel (6); the induction output end (205) is connected to the optical coupler relay (5) via a circuit line, and the conductive silica gel (6) covers the circuit line used to connect the two.

7. The anti-interference motor protector according to claim 1, characterized in that: The display module (3) is provided with a button (301) and a display screen (302).

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