CN-224232606-U - Motor protector

Abstract

The utility model discloses a motor protector, which is characterized by comprising an upper mounting seat and a lower connecting seat, wherein three groups of connecting holes for connecting a main line are formed in the lower connecting seat, a protection component is arranged in the upper mounting seat, the protection component comprises a control board, a detection part and an execution part, the detection part and the execution part are respectively connected with the control board, the execution part comprises a shell, an armature part, a contact part and a transmission part, an installation cavity and a separation plate are arranged in the shell, the installation cavity is separated into a first cavity and a second cavity by the separation plate, a sliding groove is formed in one side of the first cavity and one side of the second cavity, the armature part is arranged in the first cavity, the contact part is arranged in the second cavity, the transmission part is connected in the sliding groove in a sliding way, and the armature part is arranged in linkage way with the contact part through the transmission part.

Inventors

• CHEN YUE
• WANG ZHENGBO
• CHEN JIE
• CHEN YIMO
• Lian Zepeng
• ZUO SHEN
• HU JIAYIN

Assignees

• 乐清科盾电气有限公司

Dates

Publication Date

20260512

Application Date

20250526

Claims (8)

1. 1. The motor protector is characterized by comprising an upper mounting seat (1) and a lower connecting seat (2), wherein three groups of connecting holes (21) for connecting a main line are formed in the lower connecting seat (2), and a protection assembly is arranged in the upper mounting seat (1); The protection component comprises a control board, a detection piece and an execution piece (3), wherein the detection piece and the execution piece (3) are respectively connected with the control board; The actuating part (3) comprises a shell (4), an armature component (5), a contact component (6) and a transmission component (7), wherein an installation cavity (41) and a partition plate (42) are arranged in the shell (4), the partition plate (42) divides the installation cavity (41) into a first cavity and a second cavity, a sliding groove (43) is formed in one side of the first cavity and one side of the second cavity, the armature component (5) is arranged in the first cavity, the contact component (6) is arranged in the second cavity, the transmission component (7) is connected with the sliding groove (43) in a sliding mode, and the armature component (5) is arranged in a linkage mode through the transmission component (7) and the contact component (6).
2. 2. A motor protector according to claim 1, wherein the armature member (5) comprises an armature body (51) and a movable rod (52), the armature body (51) is rotatably connected in the first cavity, and the movable rod (52) is disposed at one end of the armature body (51) and is in linkage with the transmission member (7).
3. 3. A motor protector according to claim 2, wherein the transmission member (7) includes a transmission plate (71), the transmission plate (71) is provided with a contact groove (72) and a transmission opening (73), and one end of the movable rod (52) is inserted into the transmission opening (73) for pushing the transmission plate (71) to move.
4. 4. A motor protector according to claim 3, wherein the drive plate (71) is provided in a concave structure, the drive plate (71) includes connection portions (74) located at both sides of one end, and contact grooves (72) are provided on both connection portions (74).
5. 5. A motor protector according to claim 4, characterized in that the contact member (6) comprises a stationary contact (61), a moving contact (62) and a wire inlet plate (63), one end of the moving contact (62) is connected with the wire inlet plate (63), and the other end is connected with a contact groove (72).
6. 6. A motor protector according to claim 5, wherein the housing (4) is provided with a mounting groove (44) for mounting a wire inlet plate (63), the wire inlet plate (63) is provided with a bump, the moving contact (62) is provided with a mounting hole for the bump to be buckled, and the wire inlet plate (63) and the groove wall of the mounting groove (44) are formed with a through hole for only the moving contact (62) to pass through.
7. 7. A motor protector according to claim 5, wherein the movable contact (62) comprises at least a first elastic piece (611) and a second elastic piece (612), and one ends of the first elastic piece (611) and the second elastic piece (612) are respectively provided with a buckling head, and the two buckling heads are buckled on two sides of the contact groove (72) respectively.
8. 8. A motor protector according to any one of claims 1-7, wherein the control board is provided with an NFC module and a Bluetooth module.

Description

Motor protector Technical Field The present utility model relates to a protector, and more particularly, to a motor protector. Background The motor protector is an important electrical device for protecting the safe operation of a motor, can monitor the operation state of the motor in real time, cut off the power supply in time when abnormal conditions occur, prevent the motor from being damaged, prolong the service life of the motor and ensure the stable operation of a production system. Motor protectors typically detect parameters such as current, voltage, temperature, etc. of the motor through built-in sensors. When the parameters exceed the preset normal range, a logic circuit in the protector can quickly judge and send out an instruction to cut off the power supply of the motor through the relay, so that the motor is protected. When the coil is electrified, the iron core is magnetized to generate electromagnetic attraction force to attract the armature to act so as to close or open the contact, after the coil is powered off, the electromagnetic attraction force disappears, the armature returns to the original position under the action of the return spring, and the contact is restored to the original state, so that the circuit protection effect is realized. The relay structure has the following defects that 1, the power consumption is higher, when the relay works, the coil needs to be continuously electrified to keep the state of the contact, electric energy can be continuously consumed, energy waste is caused for a long time, the ageing of insulating materials of the coil can be accelerated by heat generated by electrifying the coil, the service life is reduced, the normal work of other surrounding electronic elements can be possibly influenced, 2, the reliability is lower, the relay realizes circuit control by virtue of the on-off of the contact, the contact is worn out by virtue of frequent action for a long time, when the contact is seriously worn out, the contact resistance is increased, the voltage drop in the circuit is increased, the normal work of a load is influenced, even phenomena such as sparking and adhesion occur, and circuit faults are caused. In addition, in the action process of the relay, electromagnetic pulse can be generated when the coil is powered on or off, and the interference to surrounding electronic equipment can be caused, so that the stability and reliability of the system are affected. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model aims to provide a motor protector, which can adopt a magnetic latching relay as an execution unit, reduce the use power consumption and improve the reliability. In order to achieve the aim, the utility model provides the technical scheme that the motor protector comprises an upper mounting seat and a lower connecting seat, wherein three groups of connecting holes for connecting a main line are formed in the lower connecting seat, and a protection component is arranged in the upper mounting seat; The protection component comprises a control board, a detection piece and an execution piece, wherein the detection piece and the execution piece are respectively connected with the control board; The actuating part comprises a shell, an armature component, a contact component and a transmission component, wherein 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, a sliding groove is formed in one side of the first cavity and one side of the second cavity, the armature component is arranged in the first cavity, the contact component is arranged in the second cavity, the transmission component is connected with the sliding groove in a sliding mode, and the armature component is arranged in a linkage mode through the transmission component and the contact component. The utility model further provides that the armature component comprises an armature body and a movable rod, wherein the armature body is rotationally connected in the first cavity, and the movable rod is arranged at one end of the armature body and is in linkage arrangement with the transmission component. The utility model is further arranged that the transmission part comprises a transmission plate, the transmission plate is provided with a contact groove and a transmission opening, and one end of the movable rod is inserted into the transmission opening and used for pushing the transmission plate to move. The utility model is further characterized in that the transmission plate is arranged in a concave structure, the transmission plate comprises connecting parts positioned at two sides of one end, and contact grooves are formed in the two connecting parts. The utility model further provides that the contact component comprises a fixed contact, a moving contact and a wire inlet plate, wherein one end of the moving contact is connect