Motor protector

Abstract

According to the technical scheme, the motor protector is characterized in that the motor protector comprises an upper installation base and a lower connection base, the lower connection base is provided with three sets of connection holes for main line connection, and a protection assembly is arranged in the upper installation base; the protection assembly comprises a control panel, a detection piece and an execution piece. The detection piece and the execution piece are connected with the control panel. The execution part comprises a shell, an armature part, a contact part and a transmission part, an installation cavity and a partition plate are arranged in the shell, the partition plate divides the installation cavity into a first cavity and a second cavity, sliding grooves are formed in one side of the first cavity and one side of the second cavity, the armature part is installed in the first cavity, and the contact part is installed in the second cavity; the transmission part is slidably connected into the sliding groove, the armature part is in linkage with the contact part through the transmission part, the protector can adopt the magnetic latching relay as an execution unit, the use power consumption is reduced, and the reliability is improved.

Description

Technical Field

[0001] This utility model relates to a protector, and more specifically, to a motor protector. Background Technology

[0002] A motor protector is an important electrical device used to protect the safe operation of a motor. It can monitor the operating status of the motor in real time and cut off the power supply in time when abnormalities occur, preventing damage to the motor, extending the service life of the motor, and ensuring the stable operation of the production system.

[0003] Motor protectors typically use built-in sensors to detect parameters such as current, voltage, and temperature of the motor. When these parameters exceed preset normal ranges, the internal logic circuit of the protector quickly makes a judgment and issues a command to cut off the power supply to the motor via a relay, thereby protecting the motor.

[0004] The existing motor protector uses a relay as the actuator. When the coil is energized, the iron core is magnetized and generates electromagnetic attraction, which attracts the armature to move, causing the contacts to close or open. After the coil is de-energized, the electromagnetic attraction disappears, and the armature returns to its original position under the action of the return spring, and the contacts return to their initial state, thereby achieving the function of circuit protection.

[0005] However, relays have the following drawbacks: 1. High power consumption: During operation, the coil needs continuous energization to maintain the contact state, consuming electrical energy over time. This leads to energy waste, and the heat generated by the coil accelerates the aging of the coil insulation, reducing its lifespan and potentially affecting the normal operation of other surrounding electronic components. 2. Low reliability: Relays rely on the opening and closing of contacts for circuit control. Frequent operation over a long period causes contact wear. When contact wear is severe, the contact resistance increases, leading to a voltage drop in the circuit, affecting the normal operation of the load, and even causing arcing, sticking, and other phenomena, resulting in circuit failure. Furthermore, the energization and de-energization of the coil during relay operation generates electromagnetic pulses, which may interfere with surrounding electronic equipment, affecting the stability and reliability of the system. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a motor protector that uses a magnetic latching relay as the actuation unit, thereby reducing power consumption and improving reliability.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a motor protector, comprising an upper mounting base and a lower connecting base, wherein the lower connecting base is provided with three sets of connecting holes for main line connection, and a protective component is provided inside the upper mounting base;

[0008] The protection component includes a control board, a detection element, and an actuator, wherein the detection element and the actuator are respectively connected to the control board;

[0009] The actuator includes a housing, an armature component, a contact component, and a transmission component. The housing has an installation cavity and a partition plate. The partition plate divides the installation cavity into a first cavity and a second cavity. A sliding groove is formed on one side of the first cavity and one side of the second cavity. The armature component is installed in the first cavity, and the contact component is installed in the second cavity. The transmission component is slidably connected to the sliding groove. The armature component is linked to the contact component through the transmission component.

[0010] The present invention is further configured such that: the armature component includes an armature body and a movable rod, the armature body is rotatably connected to the first cavity, and the movable rod is disposed at one end of the armature body and is linked with the transmission component.

[0011] The present invention is further configured such that: the transmission component includes a transmission plate, the transmission plate is provided with a contact groove and a transmission port, and one end of the movable rod is inserted into the transmission port for pushing the transmission plate to move.

[0012] The present invention is further configured such that: the transmission plate is in the form of a concave structure, and the transmission plate includes connecting portions located on both sides of one end, and each of the two connecting portions is provided with a contact groove.

[0013] The present invention is further configured such that: the contact component includes a stationary contact, a moving contact, and an inlet plate, one end of the moving contact is connected to the inlet plate, and the other end is connected to the contact groove.

[0014] The present invention is further configured such that: the housing is provided with a mounting groove for mounting the inlet plate, the inlet plate is provided with a protrusion, the moving contact is provided with a mounting hole for the protrusion to snap into place, and the inlet plate and the groove wall of the mounting groove form an opening for the moving contact to pass through only.

[0015] The present invention is further configured such that: the moving contact includes at least a first elastic sheet and a second elastic sheet, and one end of the first elastic sheet and the second elastic sheet is provided with a snap-fit ​​head, and the two snap-fit ​​heads are respectively snapped onto both sides of the contact groove.

[0016] The present invention is further configured such that the control board is provided with an NFC module and a Bluetooth module.

[0017] In summary, the present invention has the following beneficial effects: 1. The present motor protector uses a magnetic latching relay as the actuator, which makes it have the functions of low power consumption and high reliability during operation.

[0018] 2. The housing is divided into upper and lower sections by a partition plate, which facilitates the separate installation of the armature and contact components, thereby improving the stability and convenience of installation.

[0019] 3. The design of the NFC and Bluetooth modules enables the protector to connect with external mobile phones for convenient data transmission. Attached Figure Description

[0020] Figure 1 A three-dimensional structural diagram of a motor protector;

[0021] Figure 2 This is a structural schematic diagram of the actuator;

[0022] Figure 3 This is a three-dimensional structural diagram of the housing and contact assembly;

[0023] Figure 4 for Figure 3 Enlarged view at point A;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the transmission plate;

[0025] Figure 6 This is a three-dimensional structural diagram of the armature component.

[0026] Reference numerals: 1. Upper mounting base; 2. Lower connecting base; 21. Connecting hole; 3. Actuator; 4. Housing; 41. Mounting cavity; 42. Partition plate; 43. Sliding groove; 44. Mounting groove; 5. Armature component; 51. Armature body; 52. Moving rod; 6. Contact component; 61. Stationary contact; 611. First elastic plate; 612. Second elastic plate; 62. Moving contact; 63. Inlet plate; 7. Transmission component; 71. Transmission plate; 72. Contact groove; 73. Transmission port; 74. Connecting part. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] Reference Figures 1 to 6 As shown, in order to achieve the above objectives, the present invention provides the following technical solution: a motor protector, including an upper mounting base 1 and a lower connecting base 2, wherein the lower connecting base 2 is provided with three sets of connecting holes 21 for main line connection, and a protective component is provided inside the upper mounting base 1;

[0029] The protection component includes a control board, a detection element, and an actuator 3, with the detection element and actuator 3 respectively connected to the control board;

[0030] The actuator 3 includes a housing 4, an armature component 5, a contact component 6, and a transmission component 7. The housing 4 is provided with an installation cavity 41 and a partition plate 42. The partition plate 42 divides the installation cavity 41 into a first cavity and a second cavity. A sliding groove 43 is formed on one side of the first cavity and one side of the second cavity. The armature component 5 is installed in the first cavity, and the contact component 6 is installed in the second cavity. The transmission component 7 is slidably connected to the sliding groove 43. The armature component 5 is linked to the contact component 6 through the transmission component 7.

[0031] The control board is equipped with an NFC module and a Bluetooth module.

[0032] The design of this utility model is as follows: 1. This motor protector uses a magnetic latching relay as the actuator 3, which enables it to have low power consumption and high reliability during operation.

[0033] 2. The housing 4 is divided into upper and lower sections by a partition plate 42, which facilitates the separate installation of the armature component 5 and the contact component 6, thereby improving the stability and convenience of installation.

[0034] 3. The design of the NFC and Bluetooth modules enables the protector to connect with external mobile phones for convenient data transmission.

[0035] The present invention is further configured such that: the armature component 5 includes an armature body 51 and a movable rod 52, the armature body 51 is rotatably connected to the first cavity, and the movable rod 52 is disposed at one end of the armature body 51 and is linked with the transmission component 7.

[0036] The present invention is further configured such that: the transmission component 7 includes a transmission plate 71, the transmission plate 71 is provided with a contact groove 72 and a transmission port 73, and one end of the movable rod 52 is inserted into the transmission port 73 for pushing the transmission plate 71 to move.

[0037] like Figure 6 and Figure 5 As shown, the armature body 51 is designed so that when the magnetic field changes, it can drive the armature body 51 to rotate, thereby causing the movable rod 52 to push the transmission component 7 to move.

[0038] Other structural diagrams of armature component 5 are not shown. The specific principles are existing technology and will not be elaborated here.

[0039] The present invention is further configured such that: the transmission plate 71 is arranged in a concave shape, and the transmission plate 71 includes connecting portions 74 located on both sides of one end, and each connecting portion 74 is provided with a contact groove 72. This structural design can be coordinated with the partition plate 42 and the armature components 5 and contact components 6 of the upper and lower parts to ensure the stability of the transmission.

[0040] The present invention is further configured such that: the contact component 6 includes a stationary contact 61, a moving contact 62, and an inlet plate 63, one end of the moving contact 62 is connected to the inlet plate 63, and the other end is connected to the contact groove 72.

[0041] The present invention is further configured such that: the housing 4 is provided with a mounting groove 44 for mounting the cable inlet plate 63; the cable inlet plate 63 is provided with a protrusion; the moving contact 62 is provided with a mounting hole for the protrusion to snap into place; the cable inlet plate 63 and the groove wall of the mounting groove 44 form an opening through which only the moving contact 62 passes. Figure 2 and Figure 3 As shown in the diagram, the inlet plate 63 is designed in an L-shape to connect external lines. When the armature body 51 rotates, the moving contact 62 can abut against the slot wall, thereby deforming. At this time, the contact on the moving contact 62 abuts against the contact on the stationary contact 61 to form a signal.

[0042] The present invention is further configured such that: the moving contact 62 includes at least a first elastic sheet 611 and a second elastic sheet 612, and one end of the first elastic sheet 611 and the second elastic sheet 612 is provided with a snap-fit ​​head, and the two snap-fit ​​heads are respectively snapped onto both sides of the contact groove 72.

[0043] like Figure 3 and Figure 4 The design of this structure can ensure the stable connection between the moving contact 62 and the transmission plate 71. When the transmission plate 71 moves back and forth, it can drive the moving contact 62 to deform or reset.

[0044] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A motor protector, characterized in that: It includes an upper mounting base (1) and a lower connecting base (2), the lower connecting base (2) is provided with three sets of connecting holes (21) for connecting the main line, and the upper mounting base (1) is provided with a protective component; The protection component includes a control board, a detection element, and an actuator (3), wherein the detection element and the actuator (3) are respectively connected to the control board; The actuator (3) includes a housing (4), an armature component (5), a contact component (6), and a transmission component (7). The housing (4) is provided with an installation cavity (41) and a partition plate (42). The partition plate (42) divides the installation cavity (41) into a first cavity and a second cavity. A sliding groove (43) is formed on one side of the first cavity and one side of the second cavity. The armature component (5) is installed in the first cavity, and the contact component (6) is installed in the second cavity. The transmission component (7) is slidably connected to the sliding groove (43). The armature component (5) is linked to the contact component (6) through the transmission component (7).

2. The motor protector according to claim 1, characterized in that: The armature component (5) includes an armature body (51) and a movable rod (52). The armature body (51) is rotatably connected to the first cavity, and the movable rod (52) is located at one end of the armature body (51) and is linked with the transmission component (7).

3. The motor protector according to claim 2, characterized in that: The transmission component (7) includes a transmission plate (71), on which a contact groove (72) and a transmission port (73) are provided. One end of the movable rod (52) is inserted into the transmission port (73) to push the transmission plate (71) to move.

4. A motor protector according to claim 3, characterized in that: The transmission plate (71) is arranged in a concave shape. The transmission plate (71) includes connecting portions (74) located on both sides of one end, and each of the two connecting portions (74) is provided with a contact groove (72).

5. A motor protector according to claim 4, characterized in that: The contact component (6) includes a stationary contact (61), a moving contact (62), and an inlet plate (63). One end of the moving contact (62) is connected to the inlet plate (63), and the other end is connected to the contact groove (72).

6. A motor protector according to claim 5, characterized in that: The housing (4) is provided with a mounting groove (44) for mounting the cable inlet plate (63). The cable inlet plate (63) is provided with a protrusion. The moving contact (62) is provided with a mounting hole for the protrusion to snap into place. The cable inlet plate (63) and the groove wall of the mounting groove (44) form an opening for the moving contact (62) to pass through.

7. A motor protector according to claim 5, characterized in that: The moving contact (62) includes at least a first elastic piece (611) and a second elastic piece (612). One end of the first elastic piece (611) and the second elastic piece (612) is provided with a snap-fit ​​head, and the two snap-fit ​​heads are respectively snapped onto both sides of the contact groove (72).

8. A motor protector according to any one of claims 1-7, characterized in that: The control board is equipped with an NFC module and a Bluetooth module.

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