Electromagnetic contactor
By introducing the lever principle and linkage assembly design into the electromagnetic contactor, the problems of high usage of fixed core, movable core and electromagnetic coil are solved, and the cost of electromagnetic contactors is reduced.
Patent Information
- Application Number
- CN202423059202.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Conventional electromagnetic contactors have high costs due to the large number of fixed cores, movable cores, and electromagnetic coils required.
By employing the lever principle and through the design of the linkage assembly and reset component, the fixed core generates a small electromagnetic attraction force to overcome the reaction force of the reset spring and contact pressure spring, thereby reducing the amount of fixed core, movable core, and electromagnetic coil required.
This reduces the cost of electromagnetic contactors and saves on the number of fixed cores, movable cores, and electromagnetic coils required.
Smart Images
Figure CN223527088U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present disclosure relate to the field of electrical equipment, and more particularly to an electromagnetic contactor. BACKGROUND
[0002] A conventional electromagnetic contactor mainly includes an electromagnetic system, a contact system and an arc extinguishing system. The electromagnetic system includes an electromagnetic coil, a fixed core and a movable core. The contact system includes a static contact and a dynamic contact. The electromagnetic coil, the fixed core and the static contact are fixed on a housing of the electromagnetic contactor. The movable core and the dynamic contact are fixed on a dynamic contact support. The dynamic contact support is movable between an initial position and an operating position to make the dynamic contact and the static contact abut or separate. A contact pressure spring can be further provided between the dynamic contact and the dynamic contact support. A return spring is provided between the movable core and a support structure (e.g. a support of the electromagnetic coil) in the housing, and the return spring keeps the dynamic contact support in the initial position by applying a force to the movable core. When the electromagnetic coil is energized, the electromagnetic attraction generated by the fixed core attracts the movable core to move, and the movable core drives the dynamic contact support and the dynamic contact to move, so that the dynamic contact support is switched from the initial position to the operating position. The arc extinguishing system is used to extinguish the arc generated when the dynamic contact and the static contact separate.
[0003] In order to make the electromagnetic attraction generated by the fixed core large enough to overcome the reaction force applied by the load (e.g. the return spring and the contact pressure spring) when the dynamic contact support moves to the operating position, the fixed core, the movable core and the electromagnetic coil of the electromagnetic system need to meet higher usage requirements, resulting in a higher cost of the electromagnetic contactor. CONTENT OF THE INVENTION
[0004] The purpose of the present disclosure is to provide an electromagnetic contactor to at least partially solve the above problems.
[0005] The present disclosure provides an electromagnetic contactor, comprising: a housing; a dynamic contact assembly disposed in the housing and comprising a dynamic contact support and a dynamic contact, wherein the dynamic contact is disposed on the dynamic contact support, and the dynamic contact support is movable relative to the housing to switch between an initial position and an operating position; an electromagnetic assembly disposed in the housing and comprising a fixed core and a movable core, wherein the movable core is capable of being attracted by the fixed core to move towards the fixed core; at least one connecting rod assembly, each of the connecting rod assemblies comprising a connecting rod and a driving rod, wherein the connecting rod is connected with the movable core to be movable with the movable core, the first end of the driving rod is pivoted to the housing, the second end of the driving rod is connected with the connecting rod, and the driving rod has an abutting portion between the first end and the second end, the abutting portion abuts against the dynamic contact support to drive the dynamic contact support to move to the operating position when the movable core moves towards the fixed core; and a return member configured to drive the dynamic contact support to move to the initial position.
[0006] In some embodiments, the movable contact holder further comprises an abutting platform between the movable core and the abutting portion, the abutting portion abutting against the abutting platform.
[0007] In some embodiments, the movable contact holder further comprises a pair of side walls extending from the abutting platform to a first side of the abutting platform, the abutting platform and the pair of side walls form a groove for receiving the movable core, and a guide groove is formed on each of the side walls for slidingly receiving the connecting rod.
[0008] In some embodiments, the movable contact holder further comprises a pair of limiting arms extending from the abutting platform to a second side of the abutting platform, the driving rod is clamped between the pair of limiting arms.
[0009] In some embodiments, a limiting hook is further provided on each of the limiting arms for limiting the rotation angle range of the driving rod.
[0010] In some embodiments, the abutting portion comprises an arc-shaped protrusion, and / or the abutting platform is formed with a clearance portion near the second end of the driving rod.
[0011] In some embodiments, the second end of the driving rod is provided with a bent section, the bent section is provided with a through hole, and the connecting rod is slidingly received in the through hole.
[0012] In some embodiments, the electromagnetic contactor comprises two of the connecting rod assemblies, the two connecting rod assemblies are arranged on two sides of the movable contact holder, the first end of the driving rod of one of the connecting rod assemblies is pivotally connected to a first side wall of the housing, the first end of the driving rod of the other connecting rod assembly is pivotally connected to a second side wall of the housing, the first side wall and the second side wall are opposite to each other, and the connecting rods of the two connecting rod assemblies are parallel to each other.
[0013] In some embodiments, the electromagnetic contactor further comprises a stationary contact provided in the housing, the stationary contact is separated from or abuts against the movable contact when the movable contact holder switches between the initial position and the operating position.
[0014] In some embodiments, the reset member comprises at least two springs, the at least two springs are arranged between a support structure in the housing and the movable contact holder, and are located on two sides of the movable core.
[0015] The electromagnetic contactor provided by the embodiments of the present disclosure utilizes the lever principle to make the fixed core generate a smaller electromagnetic attraction force to overcome the reaction force exerted on the movable contact support by the load such as the reset member and the contact pressure spring, thereby reducing the usage requirement of the fixed core, the movable core and the electromagnetic coil, and being beneficial to reducing the cost of the electromagnetic contactor.
[0016] It should be understood that the content described in the content part is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become apparent through the following description. BRIEF DESCRIPTION OF DRAWINGS
[0017] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
[0018] Figure 1 a perspective sectional view schematically showing the internal structure of an electromagnetic contactor according to an embodiment of the present disclosure is shown;
[0019] Figure 2 a perspective view schematically showing Figure 1 a movable contact support, a movable core and a link assembly of the electromagnetic contactor shown;
[0020] Figure 3 a top view schematically showing Figure 2 the movable contact support, the movable core and the link assembly shown; and
[0021] Figures 4 to 6 a working process diagram schematically showing Figure 1 the electromagnetic contactor shown, wherein, Figure 4 the movable contact support in the initial position, Figure 6 the movable contact support in the operating position, Figure 5 the movable contact support in the intermediate position between the initial position and the operating position. DETAILED DESCRIPTION
[0022] Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure is more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.
[0023] The term "includes" and its variants are meant to cover non-exclusive inclusions, i.e., that the listed items are among a list of items, but not excluding others. Unless specifically stated, the term "or" means "and / or". The term "based on" means "based, at least in part, on". The term "one example embodiment" and "an embodiment" means "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", and the like, can refer to different or same objects.
[0024] As described above, in a conventional electromagnetic contactor, the movable core and the movable contact holder are fixed together, and the return spring is clamped between the movable core and the support structure in the housing of the electromagnetic contactor. In order to enable the movable contact holder to move from the initial position to the operating position, the electromagnetic attraction generated by the fixed core needs to be large enough, at least greater than the counterforce exerted on the movable contact holder by the load such as the return spring and the contact pressure spring. This requires a higher amount of the fixed core, the movable core and the electromagnetic coil, resulting in a higher cost of the electromagnetic contactor. The embodiments of the present disclosure provide an electromagnetic contactor which utilizes the principle of lever, so that a smaller electromagnetic attraction generated by the fixed core can overcome the counterforce exerted on the movable contact holder by the load such as the return spring and the contact pressure spring, thereby reducing the amount requirement of the fixed core, the movable core and the electromagnetic coil, and being conducive to reducing the cost of the electromagnetic contactor. In the following, the electromagnetic contactor according to an embodiment of the present disclosure will be described in detail in conjunction with the drawings. Figures 1 to 6 The principles of the present disclosure are described.
[0025] Figure 1 A perspective sectional view schematically showing the internal structure of the electromagnetic contactor according to an embodiment of the present disclosure is shown. Figure 2 A perspective view schematically showing Figure 1 A perspective view of the movable contact holder, the movable core and the linkage assembly of the electromagnetic contactor shown. Figure 3 A top view of the movable contact holder, the movable core and the linkage assembly shown. Figure 2 A top view of the movable contact holder, the movable core and the linkage assembly shown. Figures 4 to 6 A top view of the movable contact holder, the movable core and the linkage assembly shown. Figure 1 A working process diagram of the electromagnetic contactor shown, wherein, Figure 4 the movable contact holder in the initial position, Figure 6 the movable contact holder in the operating position, Figure 5 the movable contact holder in the intermediate position between the initial position and the operating position.
[0026] Referring to Figure 1 , the electromagnetic contactor 100 provided by the embodiments of the present disclosure comprises a housing 10, a movable contact assembly 20, an electromagnetic assembly 30, a linkage assembly 40, and a return member 50.
[0027] The main body of the housing 10 can include a first base 11 and a second base 12 which are coupled together and define an inner cavity of the housing 10, in which the movable contact assembly 20, the electromagnetic assembly 30, the connecting rod assembly 40 and the reset member 50 are installed.
[0028] Referring to Figures 1 to 3 The movable contact assembly 20 is disposed in the housing 10 and includes a movable contact bracket 21 and a plurality of movable contacts 22. The movable contact bracket 21 is, for example, slidingly fitted with the first base 11, and is movable relative to the housing 10 to switch between an initial position and an operating position. The plurality of movable contacts 22 are disposed on the movable contact bracket 21 so as to be movable together with the movable contact bracket 21.
[0029] In some embodiments, the movable contact bracket 21 is provided with a plurality of mounting slots 216, each of which is provided with a support beam (not numbered in the figure). Each of the movable contacts 22 is respectively threaded into a corresponding mounting slot 216, and the middle portion of each of the movable contacts 22 is supported by a corresponding support beam. Each of the movable contacts 22 is provided with a movable contact point 221 at each end thereof. A contact pressure spring 217 can also be provided in each of the mounting slots 216, which presses the corresponding movable contact 22 against the support beam.
[0030] A plurality of stationary contacts 60 are also provided in the housing 10, each of which has a stationary contact point 61. Each of the stationary contacts 60 can be fixed to the first base 11. When the movable contact bracket 21 switches between the initial position and the operating position, the stationary contact point 61 of each of the stationary contacts 60 is separated from or abuts against the corresponding movable contact point 221 of the corresponding movable contact 22. In the present embodiment, when the movable contact bracket 21 is in the initial position, the stationary contact point 61 and the movable contact point 221 are separated, and when the movable contact bracket 21 is in the operating position, the stationary contact point 61 and the movable contact point 221 abut against each other. In some alternative embodiments, when the movable contact bracket 21 is in the initial position, the stationary contact point 61 and the movable contact point 221 abut against each other, and when the movable contact bracket 21 is in the operating position, the stationary contact point 61 and the movable contact point 221 are separated.
[0031] The electromagnetic assembly 30 includes a fixed core 31, a movable core 32 and an electromagnetic coil 33. The fixed core 31 and the electromagnetic coil 33 can be fixed to the second base 12. As known in the art, when the electromagnetic coil 33 is not energized, the fixed core 31 does not attract the movable core 32, and the movable core 32 is away from the fixed core 31. When the electromagnetic coil 33 is energized, the fixed core 31 can generate an electromagnetic attraction force, so that the movable core 32 is attracted by the fixed core 31 and moves towards the fixed core 31. In some embodiments, the fixed core 31 can be referred to as a stationary core, and the movable core 32 can be referred to as a movable core. Referring to Figure 1 The movable core 32 is generally located at a middle position of the housing 10 in the transverse direction.
[0032] The connecting rod assembly 40 includes a connecting rod 41 and a driving rod 42. The connecting rod 41 is connected with the movable core 32 to be movable with the movable core 32. In some embodiments, the movable core 32 can be provided with a mounting hole (not labeled in the figure), and the connecting rod 41 passes through the mounting hole to be connected with the movable core 32.
[0033] The first end 4201 of the driving rod 42 is pivoted with the shell 10 through a suitable structure. The pivoting point of the first end 4201 of the driving rod 42 with the shell 10 forms a rotation fulcrum of the driving rod 42. The second end 4202 of the driving rod 42 is connected with the connecting rod 41. The driving rod 42 has an abutting portion 43 between the first end 4201 and the second end 4202, and the abutting portion 43 abuts against the moving contact bracket 21.
[0034] When the electromagnetic coil 33 is energized, the movable core 32 moves towards the fixed core 31, and the connecting rod 41 pulls the second end 4202 of the driving rod 42, so that the driving rod 42 rotates in a first direction about the rotation fulcrum thereof. At the same time, the abutting portion 43 drives the moving contact bracket 21 to move from the initial position to the operating position.
[0035] The reset member 50 is configured to drive the moving contact bracket 21 to move to the initial position. Specifically, when the electromagnetic coil 33 is not energized, and the fixed core 31 does not attract the movable core 32, the reset member 50 pushes the moving contact bracket 21 to move from the operating position to the initial position, at this time, the driving rod 42 rotates in a second direction about the rotation fulcrum thereof, and the second direction is opposite to the first direction. With the rotation of the driving rod 42 in the second direction, the connecting rod 41 drives the movable core 32 to move away from the fixed core 31.
[0036] The reset member 50 can be a spring, and the reset member 50 can be arranged at any suitable position. In some embodiments, the reset member 50 includes two or more springs, for example, which can be clamped between a support structure (the support structure can be, but is not limited to, a support of the electromagnetic coil 33) in the shell 10 and the moving contact bracket 21. In some embodiments, the springs can be symmetrically arranged on both sides of the movable core 32.
[0037] The working principle of the electromagnetic contactor 100 according to the embodiments of the present disclosure will be described below in combination with Figures 4 to 6
[0038] Referring to Figure 4 , the moving contact bracket 21 is in the initial position, and the moving contact point 221 of the moving contact 22 and the stationary contact point 61 of the stationary contact 60 are separated. At this time, the electromagnetic coil 33 can be energized, and the fixed core 31 generates an electromagnetic attraction force. Under the action of the electromagnetic attraction force, the movable core 32 moves downward to approach the fixed core 31.
[0039] Referring to Figure 5 In the process of the movable core 32 approaching the fixed core 31, the movable core 32 drives the connecting rod 41 to move downward, the connecting rod 41 drives the driving rod 42 to rotate in the first direction around the rotating fulcrum, and the driving rod 42 drives the moving contact support 21 to move downward through the abutting portion 43. When the movable core 32 moves downward to the position shown in FIG. 8, the moving contact support 21 moves to the operating position. At this time, the moving contact 221 of the moving contact 22 and the stationary contact 61 of the stationary contact 60 abut. When the electromagnetic coil 33 is de-energized, the electromagnetic attraction of the fixed core 32 disappears, and the reset member 50 drives the moving contact support 21 to move to the initial position, returning to the state shown in FIG. 7. Figure 6 In the process of the movable core 32 approaching the fixed core 31, the movable core 32 drives the connecting rod 41 to move downward, the connecting rod 41 drives the driving rod 42 to rotate in the first direction around the rotating fulcrum, and the driving rod 42 drives the moving contact support 21 to move downward through the abutting portion 43. When the movable core 32 moves downward to the position shown in FIG. 8, the moving contact support 21 moves to the operating position. At this time, the moving contact 221 of the moving contact 22 and the stationary contact 61 of the stationary contact 60 abut. When the electromagnetic coil 33 is de-energized, the electromagnetic attraction of the fixed core 32 disappears, and the reset member 50 drives the moving contact support 21 to move to the initial position, returning to the state shown in FIG. 7. Figure 4 In the process of the movable core 32 approaching the fixed core 31, the movable core 32 drives the connecting rod 41 to move downward, the connecting rod 41 drives the driving rod 42 to rotate in the first direction around the rotating fulcrum, and the driving rod 42 drives the moving contact support 21 to move downward through the abutting portion 43. When the movable core 32 moves downward to the position shown in FIG. 8, the moving contact support 21 moves to the operating position. At this time, the moving contact 221 of the moving contact 22 and the stationary contact 61 of the stationary contact 60 abut. When the electromagnetic coil 33 is de-energized, the electromagnetic attraction of the fixed core 32 disappears, and the reset member 50 drives the moving contact support 21 to move to the initial position, returning to the state shown in FIG. 7.
[0040] The electromagnetic contactor 100 provided by the embodiment of the present disclosure, when the electromagnetic coil 43 is energized, the second end 4202 of the driving rod 42 is subjected to a pulling force from the connecting rod 41, which is related to the electromagnetic attraction received by the movable core 32. The action line of the pulling force and the rotating fulcrum of the driving rod 42 form a first force arm. At the same time, the driving rod 42 is subjected to a pressure from the moving contact support 21 at the abutting portion 43, which corresponds to the pushing force of the driving rod 42 driving the moving contact support 21 to move to the operating position. The action line of the pressure and the rotating fulcrum of the driving rod 42 form a second force arm. The second force arm is smaller than the first force arm, according to the principle of the lever, the pressure at the abutting portion 43 is greater than the pulling force at the second end 4202. Therefore, the fixed core 32 applies a smaller electromagnetic attraction to the movable core 32, and the driving rod 42 can apply a larger pushing force to the moving contact support 21 to overcome the reaction force of the load such as the reset member 50 and the contact pressure spring 217 applied to the moving contact support 21, thereby driving the moving contact support 21 to move from the initial position to the operating position.
[0041] The electromagnetic contactor 100 provided by the embodiment of the present disclosure can reduce the size of the electromagnetic attraction required to be generated by the fixed core 31, thereby saving the number of sheets of the fixed core 31 and the movable core 32, and reducing the number of turns of the electromagnetic coil 33, thereby being conducive to reducing the cost of the electromagnetic contactor 100.
[0042] Referring back to Figure 1 and Figure 2 , the embodiment of the present disclosure shows an exemplary embodiment of the moving contact support 21 and the connecting rod assembly 40.
[0043] The moving contact support 21 can include an abutting table 211 between the movable core 32 and the abutting portion 43, and the abutting portion 43 on the driving rod 42 abuts against the abutting table 211. As shown in Figure 2As can be seen, the first end (left end in the figure) of the connecting rod 41 is close to the first end 4201 of the driving rod 42, and the second end (right end in the figure) of the connecting rod 41 is close to the second end 4202 of the driving rod 42 and connected to the second end 4202 of the driving rod 42 through the bending section 421.
[0044] In some embodiments, the bending section 421 extends from the second end 4202 of the driving rod 42, and the bending section 421 is provided with a through hole 422, and the second end of the connecting rod 41 is in sliding fit with the through hole 422. In some embodiments, the bending section 421 is, for example, substantially perpendicular to the driving rod 42. Of course, in some alternative embodiments, the connecting rod 41 can also be connected to the second end 4202 of the driving rod 42 through other suitable structures, and is not limited to the above-mentioned bending section 421. For example, in some embodiments, the second end of the connecting rod 41 can be connected to the second end 4202 of the driving rod 42 through, for example, a flexible cable.
[0045] In some embodiments, the abutting portion 43 comprises an arc-shaped protruding portion. In this way, when the driving rod 42 rotates, the abutting portion 43 can keep reliable abutment with the abutting table 211. In some embodiments, the abutting table 211 is formed with a relief portion 2110 at a position close to the second end 4202 of the driving rod 42, so as to avoid interference with the rotation of the driving rod 42.
[0046] Referring to Figure 2 In some embodiments, the movable contact support 21 further comprises a pair of side walls 212 extending from the abutting table 211 to the first side of the abutting table 211, and the abutting table 211 and the pair of side walls 212 form a recess 213 for receiving the movable core 32. Each side wall 212 is formed with a guide groove 214 in sliding fit with the connecting rod 41. The recess 213 and the guide groove 214 play a role in guiding the movement of the movable core 32.
[0047] Referring to Figure 2 and Figure 3 In some embodiments, the movable contact support 21 further comprises a pair of limiting arms 215 extending from the abutting table 211 to the second side of the abutting table 211 opposite to the first side, and the driving rod 42 is clamped between the pair of limiting arms 215. The pair of limiting arms 215 is used to define the rotation plane of the driving rod 42.
[0048] In some embodiments, each limiting arm 215 can be further provided with a limiting hook 2151 for limiting the rotation angle range of the driving rod 42. In some embodiments, the pair of limiting arms 215 can be located on the side of the abutting portion 43 close to the rotation fulcrum of the driving rod 42. When the movable contact support 21 moves from the operating position to the initial position, the limiting hook 2151 can abut against the driving rod 42 to limit the rotation angle range of the driving rod 42, so as to avoid the driving rod 42 from continuing to rotate under the action of inertia.
[0049] Combination reference Figures 1 to 3 In some embodiments, the electromagnetic contactor 100 can include two linkage assemblies 40 arranged on opposite sides of the movable contact holder 21. The first end 4201 of the drive rod 42 of one linkage assembly 40 is pivoted to the first side wall of the housing 10, and the first end 4201 of the drive rod 42 of the other linkage assembly 40 is pivoted to the second side wall of the housing 10, which are opposite to each other. The connecting rods 41 of the two linkage assemblies 40 are parallel to each other. This helps to balance the force on the movable core 32.
[0050] The electromagnetic contactor 100 provided by the embodiments of the present disclosure utilizes the lever principle to enable the fixed core 31 to generate a smaller electromagnetic attractive force to overcome the reaction force exerted on the movable contact holder 21 by the load such as the reset member 50 and the contact pressure spring 217, thereby reducing the usage requirement of the fixed core 31, the movable core 32 and the electromagnetic coil 33, and being conducive to reducing the cost of the electromagnetic contactor 100.
[0051] The above has described the embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications or improvements to the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.
Claims
1. An electromagnetic contactor, characterized by, The utility model relates to a contactor, comprising: a housing (10); a movable contact assembly (20) disposed in the housing (10) and comprising a movable contact support (21) and a movable contact (22), wherein the movable contact (22) is disposed on the movable contact support (21), and the movable contact support (21) is movable relative to the housing (10) to switch between an initial position and an operating position; an electromagnetic assembly (30) disposed in the housing (10) and comprising a fixed core (31) and a movable core (32), wherein the movable core (32) is capable of being attracted by the fixed core (31) to move towards the fixed core (31); at least one linkage assembly (40), each of which comprises a connecting rod (41) and a driving rod (42), wherein the connecting rod (41) is connected to the movable core (32) to be movable with the movable core (32), the first end (4201) of the driving rod (42) is pivoted to the housing (10), the second end (4202) of the driving rod (42) is connected to the connecting rod (41), and the driving rod (42) has an abutting portion (43) between the first end and the second end, the abutting portion (43) abuts against the movable contact support (21) to drive the movable contact support (21) to move towards the operating position when the movable core (32) moves towards the fixed core (31); and a reset member (50) configured to drive the movable contact support (21) to move towards the initial position.
2. The electromagnetic contactor of claim 1, wherein, The movable contact support (21) comprises an abutting table (211) between the movable core (32) and the abutting portion (43), and the abutting portion (43) abuts against the abutting table (211).
3. The electromagnetic contactor of claim 2, wherein, The movable contact support (21) further comprises a pair of side walls (212) extending from the abutting table (211) to the first side of the abutting table (211), the abutting table (211) and the pair of side walls (212) form a groove (213) for receiving the movable core (32), and each of the side walls (212) is formed with a guide groove (214) for slidingly fitting the connecting rod (41).
4. The electromagnetic contactor of claim 2, wherein, The movable contact support (21) further comprises a pair of limiting arms (215) extending from the abutting table (211) to the second side of the abutting table (211), and the driving rod (42) is clamped between the pair of limiting arms (215).
5. The electromagnetic contactor of claim 4, wherein, Each of the limiting arms (215) is further provided with a limiting hook (2151) for limiting the rotation angle range of the driving rod (42).
6. The electromagnetic contactor of claim 2, wherein, The abutting portion (43) comprises an arc-shaped protruding portion, and / or the abutting table (211) is formed with a clearance portion (2110) near the position of the second end (4202) of the driving rod (42).
7. The electromagnetic contactor according to any one of claims 1 to 6, characterized by The second end (4202) of the driving rod (42) is provided with a bent section (421) provided with a through hole (422), and the connecting rod (41) is slidingly fitted in the through hole (422).
8. The electromagnetic contactor according to any one of claims 1 to 6, characterized by The two linkage assemblies (40) are arranged on both sides of the movable contact support (21), and The first end (4201) of the drive rod (42) of one of the linkage assemblies (40) is pivoted to the first side wall of the shell (10), and the first end (4201) of the drive rod (42) of the other linkage assembly (40) is pivoted to the second side wall of the shell (10), and the first side wall and the second side wall are opposite to each other, and The connecting rods (41) of the two linkage assemblies (40) are parallel to each other.
9. The electromagnetic contactor according to any one of claims 1 to 6, characterized by The static contact (60) is arranged in the shell (10), and the static contact (60) is separated from or abuts against the movable contact (22) when the movable contact support (21) is switched between the initial position and the operating position.
10. The electromagnetic contactor according to any one of claims 1 to 6, characterized by The reset member (50) includes at least two springs arranged between a support structure in the shell (10) and the movable contact support (21) and located on both sides of the movable core (32).