CN219842935U - Attachment device for contactor and contactor assembly - Google Patents

Abstract

Embodiments of the present disclosure provide an attachment device for a contactor and a contactor assembly. The attachment device includes a module backbone adapted to be detachably coupled to the contactor; a motion assembly movably disposed in the module skeleton, the motion assembly coupled to the motion member of the contactor and configured to cooperatively displace in synchronization with the motion displacement of the motion member; a magnet coupled to the motion assembly and synchronously moving with the cooperative displacement of the motion assembly; and a sensing unit coupled to the module frame and including a hall sensor disposed adjacent to the magnet for outputting a motion parameter related to movement of the magnet. Thus, the attachment device can be utilized to predict the service life of the contactor and remind maintenance personnel of timely overhauling.

Description

Attachment device for contactor and contactor assembly

Technical Field

Example embodiments of the present disclosure relate generally to the field of electrical, and in particular, to an attachment device for a contactor and a contactor assembly.

Background

The contactor is a device capable of rapidly switching on and off a high-current control circuit, is widely applied to system equipment such as aerospace, aviation, weapons, ships, electronics and the like, is mainly used as a power distribution switch to control a power supply or to control the start and stop of a high-power motor, and is a key device in the equipment.

The contactor uses the coil to flow current to generate magnetic field to close the contact, so as to achieve the purpose of controlling the electric appliance of the load. The contactor mainly comprises a body and an action part movably coupled to the body, wherein the action part slides in the contactor to different working states, namely, the connection and disconnection of the contactor are controlled.

The existing contactor is easy to age and easily generate faults after long-term use, and the faults have certain sporadic property, so that the faults are not easy to be checked in advance; contactor faults can affect the proper operation of the circuit, particularly for some uninterruptible equipment, and sudden circuit faults can easily cause damage to the equipment or loss of data.

Disclosure of Invention

In a first aspect of the present disclosure, there is provided an attachment device for a contactor, comprising: a module backbone adapted to be detachably coupled to the contactor; the motion assembly is movably arranged in the module framework, and is coupled with the action part of the contactor so as to synchronously generate cooperative displacement along with the action displacement of the action part; a magnet coupled to the motion assembly and synchronously moving with the cooperative displacement of the motion assembly; and a sensing unit coupled to the module frame and including a hall sensor disposed adjacent to the magnet for outputting a motion parameter related to movement of the magnet.

In some embodiments, the sensing unit further comprises: a sensor housing fixedly coupled to the module backbone and adapted to house the hall sensor.

In some embodiments, the motion assembly comprises: and a motion coupling part arranged to be coupled with the motion part of the contactor so as to cooperatively displace the motion assembly following the motion part along the motion displacement direction.

In some embodiments, the kinematic coupling is arranged to establish coupling with the actuation member by movement in a mounting direction perpendicular to the actuation displacement direction of the actuation member.

In some embodiments, the module skeleton comprises: a coupling is mounted and arranged to couple with the housing of the contactor to hold the hall sensor and the contactor relatively stationary for sensing a movement parameter related to the movement of the magnet.

In some embodiments, the mounting coupling is arranged to establish coupling with the contactor by movement in a mounting direction.

In some embodiments, the module skeleton further comprises: the stop bar, and wherein the movement assembly further comprises a slide rail arranged in sliding engagement with the stop bar for providing a guide for a co-displacement of the movement assembly.

In some embodiments, the module skeleton further comprises: the surface cover is arranged on one side away from the contactor and comprises an interface part, and the interface part is electrically connected with the induction unit to at least supply power to the induction unit through the interface part.

In some embodiments, the face cover further comprises an indicator window, and wherein the attachment device further comprises: an indication unit arranged in the indication window to indicate at least a state of the contactor.

In some embodiments, the module skeleton further comprises: and a snap member arranged on a side facing the contactor and adapted to be coupled with a positioning groove on the contactor.

In some embodiments, further comprising: a mounting cup, comprising: an opening portion for placing the magnet in the mounting cover; and a first pin hole radially arranging an edge of the opening portion, wherein the mounting cap is adapted to be coupled to the moving assembly via the first pin hole.

In some embodiments, the motion assembly further comprises: a mounting table arranged to be at least partially surrounded by the opening portion and including a second pin hole; and a pin adapted to be inserted through the second pin hole into the first pin hole to couple the mounting cup with the moving assembly.

In some embodiments, further comprising: a compression spring arranged between the magnet and the mounting table to provide pressure to the magnet towards the hall sensor.

In some embodiments, further comprising: an auxiliary contact configured to output an operating state of the contactor according to a movement position of the movement assembly, comprising: the fixed contact is arranged in the module framework; the moving contact is arranged on the moving assembly and moves along with the cooperative displacement of the moving assembly so as to be disconnected or connected with the fixed contact; and the connector is arranged on the module framework and is configured to output a signal for switching on or off the fixed contact and the movable contact.

In a second aspect of the present disclosure, a contactor assembly is provided. The contactor assembly comprises a contactor and the attachment device of the first aspect hereinbefore, said attachment device being coupled to the contactor.

The motion parameters of the moving parts of the contactor are obtained by using the Hall sensor, so that the motion parameters of the moving parts of the contactor are obtained, and further, the aging condition of the mechanical properties of each part in the moving parts can be predicted by analyzing the motion parameters of the moving parts. When the acquired motion parameter information exceeds a specified threshold, the attachment device can also send an early warning to maintenance personnel so as to remind the maintenance personnel to maintain or replace the contactor in time. In this way, abrupt circuit failures due to contactor aging are reduced, and the stability of operation of the circuit and related equipment is improved.

It should be understood that what is described in this section of the disclosure is not intended to limit key features or essential features of the embodiments of the disclosure, nor is it intended to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:

fig. 1 illustrates a schematic view of an attachment device for a contactor and a mounted state of the contactor according to an embodiment of the present disclosure;

FIG. 2 illustrates an exploded view of an attachment device in connection with a contactor according to an embodiment of the present disclosure;

FIG. 3 illustrates an overall structural schematic of an attachment device according to an embodiment of the present disclosure;

FIG. 4 illustrates an overall structural schematic diagram of an attachment device at another perspective in accordance with an embodiment of the present disclosure;

fig. 5 is a schematic cross-sectional view showing an internal structure of an attachment device connected to a contactor according to an embodiment of the present disclosure;

fig. 6 shows a schematic structural view of a snap member of an attachment device according to an embodiment of the present disclosure;

fig. 7 illustrates an exploded view of an attachment device according to an embodiment of the present disclosure;

FIG. 8 illustrates a schematic diagram of a kinematic assembly of an attachment apparatus in connection with a template skeleton according to an embodiment of the present disclosure; and

fig. 9 shows a schematic structural view of an auxiliary contact of an attachment device according to an embodiment of the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure have been illustrated in the accompanying drawings, it is to be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be more thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

It should be noted that any section/subsection headings provided herein are not limiting. Various embodiments are described throughout this document, and any type of embodiment may be included under any section/subsection. Furthermore, the embodiments described in any section/subsection may be combined in any manner with any other embodiment described in the same section/subsection and/or in a different section/subsection.

In describing embodiments of the present disclosure, the term "comprising" and its like should be taken to be open-ended, i.e., including, but not limited to. The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions are also possible below. The terms "first," "second," and the like, may refer to different or the same object. Other explicit and implicit definitions are also possible below.

The inventors have found that the life of the contactor is directly related to the movement parameters of the moving parts of the contactor. Specifically, as the contactor ages, parameters such as a speed peak and an operation time of an operation member of the contactor change. For example, as the contactor ages, the peak value of the moving speed of the moving member at the time of movement may decrease, the time when the peak value of the moving speed arrives may be delayed, and the moving time of the moving member may be prolonged. It is therefore possible to consider predicting the life of the contactor by these parameters. When the movement parameters such as the movement speed peak value or the movement time of the movement part of the contactor exceed the preset threshold value, the contactor is possibly damaged, and maintenance personnel are reminded of timely repairing or replacing the contactor.

Embodiments of the present disclosure propose an attachment device for a contactor. According to various embodiments of the present disclosure, a magnet is coupled to a contactor moving part through a moving assembly, and a moving parameter of the magnet and the moving part is acquired through a hall sensor disposed adjacent to the magnet. The life of the contactor can be predicted subsequently by processing the motion parameters. When the motion parameter of the contactor action part reaches a threshold value, the attachment device can send out an early warning signal and inform maintenance personnel to repair and replace the contactor in time.

Fig. 1 shows a schematic view of an attachment device for a contactor and a mounted state of a contactor 7 according to an embodiment of the present disclosure. As shown in fig. 1, generally, an attachment device for a contactor according to an embodiment of the present disclosure includes a module frame 1, a moving assembly 2 movably coupled within the module frame 1, a magnet 3 coupled to the moving assembly 2 and synchronously moving with the moving assembly 2, and a sensing unit 4 coupled to the module frame 1 for outputting a movement parameter related to the magnet 3 according to movement of the magnet 3.

The module backbone 1 is adapted to be detachably coupled to the contactor 7. Fig. 2 shows an exploded view of the connection relationship of the attachment device and the contactor 7 of the embodiment of the present disclosure. As shown in fig. 2, the module frame 1 is coupled to the housing 71 of the contactor 7 in the mounting direction N, while the moving assembly 2 is coupled to the actuating member 72 of the contactor 7. When the contactor 7 is operated, the movement component 72 of the contactor 7 generates movement displacement along the movement displacement direction K relative to the housing 71 of the contactor 7, and at this time, the movement assembly 2 generates cooperative displacement (i.e., the movement assembly 2 generates relative displacement with the module frame 1) with the movement displacement of the movement component 72, and the magnet 3 moves synchronously with the cooperative displacement of the movement assembly 2. The movement displacement direction K of the movement member 72 of the contactor 7 is along a direction toward or away from the module frame 1.

The sensing unit 4 includes a sensor housing 41 and a hall sensor 42 coupled to the sensor housing 41. The sensor housing 41 is coupled to one side of the module frame 1. For example, in some embodiments, the sensor housing 41 may be coupled to one side of the module backbone 1 by means of a snap fit, a threaded connection, an interference fit, or an adhesive, etc., both of which may be arranged side-by-side outside the face plate of the contactor 7. When the sensor housing 41 is coupled to the module frame 1, the hall sensor 42 is disposed adjacent to the magnet 3, so that the hall sensor 42 can sense a change in the position of the magnet 3 and output a motion parameter related to the movement of the magnet 3.

According to the attaching device of the embodiment of the present disclosure, since the magnet 3 is coupled with the moving assembly 2, the moving assembly 2 is coupled with the moving member 72, and the sensing unit 4 is coupled with the module frame 1, the moving parameter of the magnet 3 relative to the hall sensor 42 may reflect the moving parameter of the moving member 72 relative to the housing 71, so that the operating state of the contactor 7 may be estimated according to the moving parameter of the magnet 3 acquired by the hall sensor 42, and the operating life of the contactor 7 may be estimated.

In some embodiments, the hall sensor 42 may be disposed on a circuit board that is also disposed in the sensor housing 41. In addition to the hall sensor 42, a processor may be included on the circuit board. For example, movement of the magnet 3 relative to the hall sensor 42 may cause a change in the electrical signal output by the hall sensor 42. The processor may generate the motion parameter from a change in the electrical signal. In some alternative embodiments, the processor may also be a processor of an electronic device such as a computer coupled to the present attachment means, and the hall sensor 42 may output the motion parameters directly from the motion of the magnet. The processor of the electronic device may then process these kinetic parameters and thereby estimate the operational life of the contactor 7 and display it to the user. In some embodiments, the sensing unit 4 may further comprise a memory for storing the movement parameters and for the maintenance personnel to read at any time.

The attachment device according to the embodiment of the present disclosure can be attached to the existing contactor 7 without modifying the structure of the contactor 7, so that the contactor 7 can be improved in a more convenient manner at a lower cost, thereby facilitating the post-maintenance of the contactor 7. The structure of the coupling of the attachment means with the contactor 7 will be further elucidated hereinafter.

Fig. 3 shows an overall structural schematic of an attachment device of an embodiment of the present disclosure. In some embodiments, the module skeleton 1 further comprises a cover 14, the cover 14 being provided on a side of the body facing away from the contactor 7, the cover 14 covering a side of the moving assembly 2 facing away from the contactor 7 and protecting the moving assembly 2. At the same time, the cover 14 also covers the sensing unit 4 mentioned above. When the attachment device is fitted to the contactor 7, the face cover 14 is arranged substantially parallel to the panel of the contactor 7, thereby facilitating the user to understand the state of the contactor 7 through the panel.

Specifically, as shown in fig. 2 and 3, an indication unit 5 is also mounted on the module frame 1. For example, in some embodiments, the cover 14 may be provided with an indication window for exposing the indication unit 5, so that the user can read information of the indication unit 5. The indication unit 5 may be used to output the motion parameters received by the hall sensor 42 or to output information about the state of the contactor 7. For example, the indication unit 5 may include a liquid crystal screen for displaying information such as movement parameters.

In some embodiments, the indication unit 5 may also include an indication lamp such as an LED and/or an audio output unit such as a speaker, etc. capable of emitting a predetermined color or colors. When the hall sensor 42 senses that the motion parameter associated with the motion of the motion member 72 exceeds a threshold, the indication unit 5 may also issue an alarm, such as a flashing light, a buzzing, or the like, to alert maintenance personnel to timely service.

In some embodiments, the face cover 14 further includes an interface portion 16. The interface 16 is electrically connected to the sensing unit 4, and the interface 16 is also capable of being plugged with an external power source, thereby supplying power to the sensing unit 4 through the interface board 16. In addition, in some embodiments, the interface 16 may be further connected to an external electronic device through a data line, so that the external electronic device can be facilitated to read the motion parameters recorded in the memory or configure the sensing unit 4.

Fig. 4 shows a schematic overall structure of an apparatus of an embodiment of the present disclosure from another perspective, and fig. 5 shows an exploded view of an attachment apparatus of an embodiment of the present disclosure. How the attachment means are mounted on the contactor 7 will be described below in connection with fig. 2, 4 and 5. In some embodiments, the module frame 1 includes a frame body 11, a mounting coupling coupled to a side of the frame body 11 facing the contactor 7. The mounting coupling is arranged to establish a coupling with the contactor 7 by a movement in the mounting direction N to keep the module backbone 1 relatively stationary with the contactor 7 housing 71 and further to keep the hall sensor 42 relatively stationary with the contactor 7 housing 71.

In some embodiments, the mounting coupling includes a pair of clips 12 fixedly attached to the skeletal body 11. The extending direction of the card 12 is perpendicular to the moving displacement direction K of the moving member 72 of the contactor 7. The card 12 may be coupled with a pair of fixing slots 73 provided on the contactor 7 to establish a fixed connection therebetween. Specifically, a pair of fixing grooves 73 are formed in the side of the contactor 7 facing the module frame 1, and are engaged with the card 12. The openings of the pair of fixing grooves 73 are disposed opposite to each other. In mounting the attachment device according to the embodiment of the present disclosure, the clip plates 12 are respectively clipped into the corresponding fixing grooves 73 in the length direction of the fixing grooves 73 (i.e., the mounting direction N mentioned above), and the module frame 1 and the contactor 7 are thereby relatively stationary in the movement displacement direction K. The end of the fixing groove 73 in the mounting direction N may also be provided with a stopper. The stop serves to stop further displacement of the catch plate 12 in the mounting direction N, so that the module skeleton 1 is fixed in place.

To prevent the module frame 1 from coming out in a direction opposite to the installation direction, the module frame 1 may further comprise a snap-in part 15 in some embodiments. Fig. 6 shows a schematic view of the state of the catch member 15 after the attachment device of the embodiment of the present disclosure is mounted in place. The latch member 15 is disposed on a side of the skeleton body 11 facing the contactor 7, and includes a latch movably coupled to the skeleton body 11. The housing 71 of the contactor 7 is provided with a positioning groove 75 on a surface facing the module frame 1, as shown in fig. 2. When the module frame 1 slides to the installation position, the clamping blocks are clamped into the positioning grooves 75, so that the module frame 1 and the contactor 7 are fixed along the installation direction N. In some embodiments, the catch member 15 may also comprise a spring or the like. The spring may press the clip toward the positioning groove 75, for example, so that the clip and the positioning can be performed more reliably.

When the attachment means is to be detached, the attachment means can be detached in a direction opposite to the mounting direction N by simply pressing the cartridge toward the attachment means so that the cartridge is removed from the positioning groove 75 at this time.

It should be understood, of course, that the above-described embodiments employing snap features to limit unintended movement of the attachment device in a direction opposite the mounting direction are illustrative and are not intended to limit the scope of the present disclosure. Any other suitable arrangement is also possible as long as the movement of the attachment means in the direction opposite to the mounting direction can be restricted. For example, in some embodiments, after the card 12 is snapped into the fixing slot 73, the card 12 is fixed to the fixing slot 73 by friction force during tight fitting, so as to avoid the card 12 from being accidentally detached from the fixing slot 73 in a direction opposite to the mounting direction N, thereby affecting the coupling between the module frame 1 and the housing 71 of the contactor 7.

In some embodiments, the kinematic assembly 2 includes a kinematic mount 21 and a kinematic coupling coupled to the kinematic mount 21. The kinematic coupling is arranged to couple with the actuation part 72 of the contactor 7 to co-displace the kinematic assembly 2 with the actuation part 72 in the direction of the actuation displacement. For example, in the process of establishing the coupling of the module frame 1 with the contactor 7 in the mounting direction N, the movement coupling portion can also move in the mounting direction N to be coupled with the operating member 72. After the module frame 1 is assembled in place, the movement displacement of the movement member 72 can drive the movement bracket 21 to generate a cooperative displacement along the movement displacement direction K.

Returning to fig. 2 and 4, in some embodiments, the kinematic coupling includes a hook plate 22 affixed to a kinematic mount 21. Correspondingly, a hook groove 74 which is matched with the hook plate 22 is formed on one side of the shell 71 of the contactor 7 facing the moving bracket 21. The length direction of the hook groove 74 (i.e., the above mounting direction N) is perpendicular to the movement displacement direction K of the movement member 72. As mentioned above, in the process of establishing the coupling with the contactor 7 in the mounting direction N of the module frame 1, the hook plate 22 may be slid into the hook groove 74 in the length direction of the hook groove 74, so that the hook plate 22 is caught with the hook groove 74. In this way, the moving assembly 2 is coupled with the actuation part 72 of the contactor 7. The movement of the magnet 3 coupled to the moving assembly 2 may directly reflect the movement of the actuating member 72. In some embodiments, like the stop at the end of the fixing groove 73, one end of the hook groove 74 of the contactor 7 may be provided with a limit structure as well. When the hook plate 22 slides in the groove until the hook plate 22 abuts against the limiting structure, the moving assembly 2 reaches the mounting position.

As mentioned above, according to the attachment device of the embodiment of the present disclosure, the moving assembly 2 and the contactor 7 actuating member 72 are coupled at the same time as the module assembly is coupled with the contactor 7 housing, thereby improving the convenience of installing the attachment device to the contactor 7.

Fig. 7 shows an exploded view of an attachment device according to an embodiment of the present disclosure, and fig. 8 shows a schematic view of a connection relationship between a motion assembly 2 and a template skeleton in an embodiment of the present disclosure. As shown in fig. 7 and 8, in some embodiments, the module backbone 1 further comprises a stop bar 13. The limit bar 13 extends in the movement displacement direction K. Correspondingly, the movement assembly 2 also comprises a sliding rail 23. The slide rail 23 is fixedly connected to the moving bracket 21, and the length direction of the slide rail 23 is parallel to the movement displacement direction K. The limit bar 13 is clamped into the slide rail 23, so that the slide rail 23 and the limit bar 13 slide relatively along the motion displacement direction K, and the motion assembly 2 slides in the module framework 1 along the motion displacement direction K and generates cooperative displacement. The cooperation of the limiting strips 13 and the sliding rails 23 improves the accuracy and fluency of the cooperative displacement of the motion assembly 2.

It should be understood that the above mentioned coupling manner of the module skeleton 1 and the housing 71 and the coupling manner of the motion assembly 2 and the motion member 72 are only illustrative, and are not intended to limit the protection scope of the present disclosure. The module skeleton 1 and the housing 71, as well as the movement assembly 2 and the actuation part 72, may also be coupled in any other suitable way. For example, in some alternative embodiments, the module backbone 1 and the housing 71 of the contactor 7 may also be coupled by means of adhesive, a fastener connection, a snap-fit connection, an interference fit, or the like. In some embodiments, the motion assembly 2 and the motion member 72 of the contactor 7 may also be coupled by adhesive, screw, fastener connection, or the like.

Fig. 8 and 9 also show how the magnet 3 is mounted in the moving assembly 2 and the positional relationship of the magnet 3 to the hall sensor 42. As shown in fig. 8 and 9, the magnet 3 and the moving assembly 2 are coupled and fixed by the mounting cover 31. Specifically, the motion assembly 2 further includes a mounting table 24 fixedly coupled to the motion bracket 21. The mounting table 24 is provided on the side of the moving assembly 2 facing the hall sensor 42. The mounting cover 31 has a cylindrical structure with one end closed. The mounting cover 31 includes an opening through which the magnet 3 is disposed within the mounting cover 31. The opening of the mounting cover 31 is fastened to the end of the mounting table 24 facing away from the moving assembly 2. At least part of the side wall of the mount 24 is surrounded by the opening of the mount cover 31. The opening of the mounting cover 31 is further provided with a first pin hole in the radial direction, and the mounting base 24 is provided with a second pin hole. When the opening of the mounting cap 31 is fitted over the end of the mounting table 24, the first pin hole is aligned with the second pin hole in the radial direction. At this time, the pins 32 may be inserted into the first pin holes and the second pin holes, so that the mount table 24 and the mount cover 31 are coupled by the pins 32.

Further, a compression spring 33 may be provided between the magnet 3 and the mount 24. One end of the compression spring 33 abuts against the end of the mount 24, and the other end abuts against the magnet 3. When the mounting cover 31 is coupled with the mounting table 24 through the pin 32, the pressure spring 33 is in a compressed state, and the pressure spring 33 provides pressure towards the Hall sensor 42 for the magnet 3, so that the distance between the magnet 3 and the Hall sensor 42 in the axial direction of the mounting cover 31 is kept unchanged, and the accuracy of acquiring the motion parameters by the Hall sensor 42 is improved.

When the moving assembly 2 moves along with the moving member 72 of the contactor 7, in the view shown in fig. 8, the moving assembly 2 moves the magnet 3 in the moving displacement direction perpendicular to the paper surface. In the view shown in fig. 9, the moving assembly 2 moves the magnet 3 in the motion displacement direction K parallel to the paper surface. That is, during the movement of the magnet 3, the distance between the magnet 3 and the hall sensor 42 in the axial direction of the mounting cup 31 remains unchanged, while the distance between the two in the movement displacement direction K changes. The hall sensor 42 is capable of sensing such a change in position, thereby outputting a corresponding electrical signal according to the change in position. The processor can determine from the electrical signal the movement parameters of the magnet 3 and thus of the moving part 72 of the contactor 7. As mentioned before, the processor may in turn evaluate the state of the contactor based on the motion parameter.

As mentioned before, after the attachment means are fitted to the contactor 7, the attachment means substantially cover the outside of the panel of the contactor 7. In order to avoid the influence of the attachment means on the original function of the contactor 7, the attachment means also comprise suitable structures to associate the components of the contactor 7 that fulfil the relevant function. For example, in some embodiments, the attachment device further comprises an auxiliary contact 6 that can be associated with a normally open and normally closed contact of the contactor 7. Fig. 9 shows a schematic structural view of the auxiliary contact 6 of the attachment device of the embodiment of the present disclosure. The auxiliary contact 6 includes a moving contact 61 coupled to the moving assembly 2, a fixed contact 62 coupled to the module frame 1, and a connector 63 coupled to the fixed contact 62 for outputting a signal of turning on or off the fixed contact 62 and the moving contact 61. When the motion component 72 moves and drives the motion component 2 to generate cooperative displacement, the moving contact 61 and the fixed contact 62 are connected or disconnected.

In some embodiments, two fixed contacts 62 are provided, and each fixed contact 62 is connected with a connector 63, and the movable contact 61 can be simultaneously connected with or disconnected from the two fixed contacts 62 when the moving assembly 2 is cooperatively displaced. For example, in some embodiments, one of the auxiliary contacts 6 can correspond to a normally open contact. When the contactor 7 communicates, the stationary contact 62 is in a communicating state with the moving contact 61. When the contactor 7 is opened, the moving assembly 2 is displaced along with the actuating member 72, so that the moving contact 61 and the stationary contact 62 are turned off. The other auxiliary contact 6 corresponds to a normally closed contact. When the contactor 7 is in communication, the stationary contact 62 is in an open state with the movable contact 61. When the contactor 7 is opened, the moving assembly 2 is displaced with the actuating member 72, so that the moving contact 61 communicates with the stationary contact 62. In this way, the functions of the normally open/normally closed contacts originally provided in the contactor 7 can be correlated by the auxiliary contacts, thereby realizing the functions of the normally open/normally closed contacts.

The foregoing description of implementations of the present disclosure has been provided for illustrative purposes, is not exhaustive, and is not limited to the implementations disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various implementations described. The terminology used herein was chosen in order to best explain the principles of each implementation, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand each implementation disclosed herein.

Claims (15)

1. An attachment device for a contactor, comprising:

-a module skeleton (1) adapted to be detachably coupled to the contactor (7);

a moving assembly (2) movably arranged in the module skeleton (1), the moving assembly (2) being coupled with an action member (72) of the contactor (7) to be cooperatively displaced in synchronization with an action displacement of the action member (72);

a magnet (3) coupled to said moving assembly (2) and moving synchronously with said cooperative displacement of said moving assembly (2); and

-a sensing unit (4) coupled to the module skeleton (1) and comprising a hall sensor (42), the hall sensor (42) being arranged adjacent to the magnet (3) for outputting a movement parameter with the magnet (3).

2. The attachment device according to claim 1, characterized in that the induction unit (4) further comprises:

a sensor housing (41) fixedly coupled to the module skeleton (1) and adapted to house the hall sensor (42).

3. The attachment device according to claim 1, characterized in that the movement assembly (2) comprises:

a kinematic coupling arranged to couple with the actuation part (72) of the contactor (7) to co-displace the kinematic assembly (2) with the actuation part (72) along an actuation displacement direction (K).

4. An attachment device according to claim 3, characterized in that the kinematic coupling is arranged to establish coupling with the action part (72) by a movement in a mounting direction (N) perpendicular to the action displacement direction (K) of the action part (72).

5. The attachment device according to any one of claims 1-4, characterized in that the module skeleton (1) comprises:

and a mounting coupling portion arranged to be detachably coupled with the housing of the contactor (7).

6. Attachment device according to claim 5, characterized in that the mounting coupling is arranged to establish coupling with the contactor (7) by movement in a mounting direction (N).

7. The attachment device according to any one of claims 1-4 and 6, characterized in that the module skeleton (1) further comprises:

a limit bar (13) and

wherein the movement assembly (2) further comprises a sliding rail (23), the sliding rail (23) being arranged for sliding engagement with the limit stop (13) for providing a guide for the co-displacement of the movement assembly (2).

8. The attachment device according to any one of claims 1-4 and 6, characterized in that the module skeleton (1) further comprises:

-a face cover (14) arranged on the side facing away from the contactor (7) and comprising an interface portion (16), the interface portion (16) being electrically connected with the induction unit (4) for supplying power to at least the induction unit (4) via the interface portion (16).

9. The attachment device according to claim 8, characterized in that the face cover (14) further comprises an indicator window, and

wherein the attachment device further comprises:

an indication unit (5) arranged in the indication window to indicate at least the state of the contactor (7).

10. The attachment device according to any one of claims 1-4 and 6, characterized in that the module skeleton (1) further comprises:

a snap member (15) arranged on the side facing the contactor (7) and adapted to be coupled with a positioning groove (75) on the contactor (7).

11. The attachment device of any one of claims 1-4 and 6, further comprising:

a mounting cover (31) comprising:

an opening portion for placing the magnet (3) in the mounting cover (31); and

-a first pin hole radially arranged at an edge of the opening, wherein the mounting cap (31) is adapted to be coupled to the moving assembly (2) via the first pin hole.

12. The attachment device according to claim 11, characterized in that the movement assembly (2) further comprises:

a mounting table (24) arranged at least partially surrounded by the opening and comprising a second pin hole; and

a pin (32) adapted to be inserted into the first pin hole through the second pin hole to couple the mounting cap (31) with the moving assembly (2).

13. The attachment device of claim 12, further comprising:

a compression spring (33) arranged between the magnet (3) and the mounting table (24) to provide the magnet (3) with a pressure force directed towards the hall sensor (42).

14. The attachment device of any one of claims 1-4, 6, 12, and 13, further comprising:

auxiliary contact (6), comprising:

a stationary contact (62) arranged in the module skeleton (1);

a moving contact (61) arranged on the moving assembly (2) and moving along with the cooperative displacement of the moving assembly (2) so as to be disconnected or connected with the fixed contact (62); and

and the connector (63) is arranged on the module framework (1) and is configured to output a signal for switching on or off the fixed contact (62) and the movable contact (61).

15. A contactor assembly, comprising:

a contactor (7); and

the attachment device according to any one of claims 1-14, being coupled to the contactor (7).