Anti-interference structure of motor

Abstract

The utility model discloses an anti-interference structure of a motor, which comprises an end cover arranged on a motor shell, a carbon brush, a capacitor and a PTC (Positive Temperature Coefficient) thermistor are arranged in the end cover, an inductor is arranged on the back of the end cover, the carbon brush is connected with the inductor and the PTC thermistor, a connecting end is arranged on the end cover, and the inductor and the capacitor are respectively connected with the connecting end. The carbon brush comprises a first carbon brush and a second carbon brush, the capacitor comprises a first capacitor and a second capacitor, the inductor comprises a first inductor and a second inductor, the connecting terminal comprises a positive terminal and a negative terminal, and one end of the PTC thermistor is connected with the first carbon brush; the other end of the PTC thermistor is connected with the positive terminal through the first inductor, the second carbon brush is connected with the negative terminal through the second inductor, one end of the first capacitor is connected with the positive terminal, the other end of the first capacitor is grounded, one end of the second capacitor is connected with the negative terminal, and the other end of the second capacitor is grounded. The motor has good anti-interference performance, and the performance of the motor is improved.

Description

Technical Field

[0001] The utility model relates to a motor, in particular to an anti-interference structure of a motor. Background Art

[0002] Motors are widely used and are also called electric motors. There are large and small types of motors. Choose the right motor for different products. The motor usually includes a housing, a mover and a stator. One end of the housing is equipped with an end cover. The mover and the stator are installed in coordination with each other, and the motor shaft rotates through the coil. During the operation of the motor, the current is easily disturbed when passing through various components, which will cause voltage instability, resulting in unstable operation of the motor. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an anti-interference structure of a motor.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An anti-interference structure of a motor includes an end cover installed on a motor housing, wherein a carbon brush, a capacitor and a PTC thermistor are arranged inside the end cover, an inductor is arranged on the back of the end cover, the carbon brush is connected to the inductor and the PTC thermistor, and a connecting end is provided on the end cover, and the inductor and the capacitor are respectively connected to the connecting end.

[0006] The carbon brush includes a first carbon brush and a second carbon brush, the capacitor includes a first capacitor and a second capacitor, the inductor includes a first inductor and a second inductor, the connecting terminal includes a positive terminal and a negative terminal, one end of the PTC thermistor is connected to the first carbon brush; the other end of the PTC thermistor is connected to the positive terminal through the first inductor, the second carbon brush is connected to the negative terminal through the second inductor, one end of the first capacitor is connected to the positive terminal, the other end of the first capacitor is grounded, one end of the second capacitor is connected to the negative terminal, and the other end of the second capacitor is grounded.

[0007] A clamping groove is arranged in the end cover, and the PTC thermistor is clamped in the clamping groove.

[0008] The back of the end cover is provided with two embedding grooves, and the first inductor and the second inductor are respectively installed in the corresponding embedding grooves.

[0009] The first capacitor and the second capacitor are symmetrically installed on both sides of the front end cover.

[0010] The first inductor and the first capacitor are arranged on the same side of the end cover, and the second inductor and the second capacitor are arranged on the same side of the end cover.

[0011] The PTC thermistor and the connecting terminal are respectively arranged on two symmetrical sides of the end cover.

[0012] In the utility model, effective anti-interference is achieved through the cooperation of capacitors and inductors, and the performance is more stable through reasonable spatial structure distribution.

[0013] PTC thermistors can provide overcurrent protection. When the micromotor is subjected to excessive current shock or abnormal current, the PTC thermistor will sense the increase in current and its own resistance value will increase rapidly, thereby limiting the current flow, which helps protect the micromotor from damage caused by excessive current.

[0014] The first inductor and the second inductor are embedded on both sides of the back of the rear end cover body, and they can filter out high-frequency noise or interference signals through the impedance of the current, so that the current change in the circuit is more stable, thereby providing a stable power supply;

[0015] The micromotor will generate electromagnetic interference during operation, which may interfere with surrounding electronic equipment or circuits. The first capacitor and the second capacitor can suppress the electromagnetic interference and reduce its impact on other devices or circuits to ensure the stability and reliability of the micromotor operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model after removing the end cover;

[0018] Figure 3 It is a structural schematic diagram of the utility model from another perspective.

[0019] Reference numerals:

[0020] End cover 1 , first carbon brush 21 , second carbon brush 22 , first capacitor 31 , second capacitor 32 , first inductor 41 , second inductor 42 , PTC thermistor 5 , positive terminal 6 , negative terminal 7 . DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present utility model, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does 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 utility model. In addition, the terms "first" and "second" 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, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected 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 utility model can be understood according to specific circumstances.

[0024] like Figure 1-3 As shown, an anti-interference structure of a motor includes an end cover 1 installed on the motor housing, wherein the end cover 1 is provided with a carbon brush, a capacitor and a PTC thermistor 5, an inductor is installed on the back of the end cover 1, the carbon brush is connected to the inductor and the PTC thermistor, and a connecting end is provided on the end cover, and the inductor and the capacitor are respectively connected to the connecting end.

[0025] More specifically, the carbon brush includes a first carbon brush 21 and a second carbon brush 22, the capacitor includes a first capacitor 31 and a second capacitor 32, the inductor includes a first inductor 41 and a second inductor 42, the connecting terminal includes a positive terminal 6 and a negative terminal 7, one end of the PTC thermistor 5 is connected to the first carbon brush 21, the other end of the PTC thermistor 5 is connected to the positive terminal 6 through the first inductor 41, the second carbon brush 22 is connected to the negative terminal 7 through the second inductor 42, one end of the first capacitor 31 is connected to the positive terminal 6, the other end of the first capacitor 31 is grounded, one end of the second capacitor 32 is connected to the negative terminal 7, and the other end of the second capacitor 32 is grounded.

[0026] During specific assembly, a clamping groove is provided in the end cover, and the PTC thermistor is clamped in the clamping groove, which ensures the stability of the installation of the PTC thermistor and facilitates the installation and reduces the difficulty of installation.

[0027] The back of the end cover is provided with two embedding grooves, and the first inductor and the second inductor are respectively installed in the corresponding embedding grooves.

[0028] The first capacitor and the second capacitor are symmetrically mounted on both sides of the front end cover. The first inductor and the first capacitor are arranged on the same side of the end cover, and the second inductor and the second capacitor are arranged on the same side of the end cover for easy connection.

[0029] The PTC thermistor and the connecting terminal are respectively arranged on two symmetrical sides of the end cover.

[0030] PTC thermistors can provide overcurrent protection. When the micromotor is subjected to excessive current shock or abnormal current, the PTC thermistor will sense the increase in current and its own resistance value will increase rapidly, thereby limiting the current flow, which helps protect the micromotor from damage caused by excessive current.

[0031] The first inductor and the second inductor are embedded on both sides of the back of the rear end cover body, and they can filter out high-frequency noise or interference signals through the impedance of the current, so that the current change in the circuit is more stable, thereby providing a stable power supply;

[0032] The micromotor will generate electromagnetic interference during operation, which may interfere with surrounding electronic equipment or circuits. The first capacitor and the second capacitor can suppress the electromagnetic interference and reduce its impact on other devices or circuits to ensure the stability and reliability of the micromotor operation.

[0033] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-interference structure of a motor, comprising an end cover mounted on a motor housing, characterized in that: The end cover is provided with a carbon brush, a capacitor and a PTC thermistor, the back of the end cover is provided with an inductor, the carbon brush is connected with the inductor and the PTC thermistor, the end cover is provided with a connecting end, and the inductor and the capacitor are respectively connected with the connecting end.

2. The anti-interference structure of the motor according to claim 1, characterized in that: The carbon brush includes a first carbon brush and a second carbon brush, the capacitor includes a first capacitor and a second capacitor, the inductor includes a first inductor and a second inductor, the connecting terminal includes a positive terminal and a negative terminal, one end of the PTC thermistor is connected to the first carbon brush, the other end of the PTC thermistor is connected to the positive terminal through the first inductor, the second carbon brush is connected to the negative terminal through the second inductor, one end of the first capacitor is connected to the positive terminal, the other end of the first capacitor is grounded, one end of the second capacitor is connected to the negative terminal, and the other end of the second capacitor is grounded.

3. The anti-interference structure of the motor according to claim 1, characterized in that: A clamping groove is arranged in the end cover, and the PTC thermistor is clamped in the clamping groove.

4. The anti-interference structure of the motor according to claim 2, characterized in that: The back of the end cover is provided with two embedding grooves, and the first inductor and the second inductor are respectively installed in the corresponding embedding grooves.

5. The anti-interference structure of the motor according to claim 2, characterized in that: The first capacitor and the second capacitor are symmetrically installed on both sides of the front end cover.

6. The anti-interference structure of the motor according to claim 2, characterized in that: The first inductor and the first capacitor are arranged on the same side of the end cover, and the second inductor and the second capacitor are arranged on the same side of the end cover.

7. The anti-interference structure of the motor according to claim 1, characterized in that: The PTC thermistor and the connecting terminal are respectively arranged on two symmetrical sides of the end cover.

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