Modularized alternating current contactor

Abstract

The utility model discloses a modularized alternating current contactor, which comprises a base and a coil assembly arranged in the base, the coil assembly is provided with a hook groove, the base is provided with a detachable housing, the base is provided with at least one detachable contact assembly, the contact assembly is arranged in the housing, and the contact assembly is arranged in the housing. The contact assembly is provided with a liftable contact support, the contact support is provided with a hook portion, the hook portion is embedded into the hook groove and abuts against the hook groove, and the hook groove is provided with an elastic piece, acts on the hook portion and is used for enhancing the connection strength of the hook portion and the hook groove. Through the plurality of detachable contact assemblies, the problems of high maintenance cost and resource waste in the prior art are solved, when a certain path of contact assembly needs to be replaced, only the contact assembly needs to be rapidly detached and replaced, and the whole alternating current contactor does not need to be replaced, so that the replacement cost and the replacement time are reduced, and the replacement efficiency is improved. The product has the advantages of low replacement cost, convenience in replacement, economy, environmental protection and the like.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a modular AC contactor. Background Technology

[0002] An AC contactor is an automatic switching device that connects or disconnects the main circuit of a motor or load. It uses electromagnetic force to close or open the switch and is suitable for frequent operation and remote control of high-voltage circuits. It also has low-voltage release protection.

[0003] In existing AC contactor designs, the main contacts, stationary contacts, and iron core coil are integrated. However, during long-term use, due to frequent closing and opening operations, the silver layer of the main contacts and stationary contacts will gradually wear down. When the silver layer of a certain contact is excessively worn or burned, affecting the normal use of that circuit, it is usually necessary to replace the entire AC contactor. This practice undoubtedly increases maintenance costs and wastes usable iron core, coil, and other resources. Therefore, the applicant has made a beneficial design and found a solution to the above problems. The technical solution to be introduced below is generated in this context. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional AC contactor design and provide a product that is low in replacement cost, easy to replace, economical and environmentally friendly.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A modular AC contactor includes a base and a coil assembly disposed therein, the coil assembly having a hook groove, the base having a removable cover, the base having at least one removable contact assembly disposed within the cover, the contact assembly having a liftable contact bracket, the contact bracket having a hook portion that is embedded in and abuts against the hook groove, the hook groove having an elastic element that acts on the hook portion to enhance the connection strength between the hook portion and the hook groove.

[0007] Preferably, the base has at least one first through hole on each of its two side walls.

[0008] Preferably, the cover has extensions on both sides that can retract toward the center, and the extensions have barbs that fasten to the first through hole.

[0009] Preferably, the coil assembly includes a stationary iron core, the stationary iron core is provided with a coil frame, the coil frame is provided with a liftable moving iron core, the moving iron core is provided with a linkage plate, the linkage plate is provided with at least one protrusion, the hook groove is provided at one end of the protrusion, and the linkage plate is provided with a slot.

[0010] Preferably, the elastic member is provided with a fixed part and is inserted into the slot, two sides of the elastic member are provided with curved action parts and are located above the hook slot, and the extension of the action part is provided with an inclined guide part.

[0011] Preferably, the hook part is provided with a pressure receiving slot for accommodating the action part.

[0012] Preferably, the base is provided with at least one second through hole and is located on both sides of the coil assembly, two ends of the second through hole are provided with third through holes, one of the third through holes of the second through hole is located close to the hook slot, and the third through hole of the second through hole away from the hook slot is located away from the hook slot.

[0013] Preferably, the contact assembly comprises a shell, two sides of the shell are provided with wiring terminals, the wiring terminals are provided with static spring sheets, and the static spring sheets are provided with static contact points.

[0014] Preferably, the bottom of the shell is provided with a connecting part and passes through the second through hole, two sides of the connecting part are provided with blocking parts and pass through the third through hole, a pushing force is applied to one end of the shell, and the blocking parts abut against the inner top of the base.

[0015] Preferably, the contact support is arranged between the two static spring sheets, the contact support is provided with a moving contact bridge, the back of the moving contact bridge is provided with a spring and applies an upward force to the inner top of the contact support, and the moving contact bridge is provided with a moving contact point corresponding to the static contact point.

[0016] Beneficial effects:

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] (1) The utility model discloses a plurality of detachable contact assemblies, effectively solve the problems of high maintenance cost and resource waste in the prior art, when the contact assembly of a certain road needs to be replaced due to excessive wear or failure, only the contact assembly of the road needs to be quickly disassembled and replaced, and the whole alternating current contactor does not need to be replaced, so that the design not only reduces the replacement cost, but also reduces the time required for overall replacement, thereby reducing the disassembly difficulty and a series of workloads such as wiring and installation, compared with the prior art, the application has the advantages of low replacement cost, economic and environmental protection, and can significantly improve the maintenance efficiency and resource utilization rate of the alternating current contactor.

[0019] (2) When the contact assembly needs to be replaced, the cover is first removed, and then a pushing force is applied to one end of the contact assembly. The pushing force is greater than the force applied to the hook by the elastic element, thereby disconnecting the hook from the hook groove, thus completing the disassembly of the contact assembly. When installing a new contact assembly, simply align the hook with the hook groove and apply a pushing force to make the hook enter the hook groove to complete the connection between the contact assembly and the coil assembly. Then, connect and fix the cover to the base. The above design can achieve quick replacement of the contact assembly without the aid of other tools, giving the product the advantage of convenient replacement and significantly improving maintenance efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a modular AC contactor according to the present invention;

[0021] Figure 2 This is a side cross-sectional view of a modular AC contactor according to the present invention.

[0022] Figure 3 This utility model Figure 2 A partially enlarged view (A) of a modular AC contactor;

[0023] Figure 4 This is an exploded view of the modular AC contactor of this utility model. Figure 1 ;

[0024] Figure 5 This is an exploded view of the modular AC contactor of this utility model. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the coil assembly of a modular AC contactor according to the present invention;

[0026] Figure 7 This is a cross-sectional view of the top of the base of a modular AC contactor according to this utility model.

[0027] Figure 8 This utility model Figure 7 A partially enlarged view (B) of a modular AC contactor;

[0028] Figure 9 This utility model Figure 7 A partially enlarged view (C) of a modular AC contactor;

[0029] The correspondence between the labels and component names in the attached figures is as follows:

[0030] Reference numerals: 1. Base; 2. Coil assembly; 3. Contact assembly; 4. Contact support; 5. Elastic element; 6. Cover;

[0031] 11, first through hole; 12, second through hole; 13, third through hole;

[0032] 21, static iron core; 22, coil holder; 23, dynamic iron core; 24, linkage plate;

[0033] 241, convex part; 242, hook groove; 243, insertion slot;

[0034] 31, shell; 32, terminal; 33, static spring piece; 34, static contact;

[0035] 311, connecting part; 32, blocking part;

[0036] 41, hook part; 42, dynamic contact bridge; 43, spring; 44, dynamic contact;

[0037] 411, pressure bearing groove;

[0038] 51, fixed part; 52, acting part; 53, guiding part;

[0039] 61, extension part; 62, barb. DETAILED DESCRIPTION

[0040] The technical solutions of the present application will be described clearly and completely below in combination with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the positions or location relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the positions or location relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the present application.

[0042] In the embodiments of the present application, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents a "or" relationship between the front and rear associated objects.

[0043] Reference Example Figures 1 to 9The utility model provides a modular AC contactor, including base 1 and the coil assembly 2 set in it, the coil assembly 2 is equipped with the hook groove 242, base 1 is equipped with the detachable cover 6, base 1 is equipped with at least one detachable contactor assembly 3, and the contactor assembly 3 is set in the cover 6, and the contactor assembly 3 is equipped with the liftable contactor support 4, and the contactor support 4 is equipped with the hook portion 41 and is embedded in the hook groove 242, and with it mutually abuts, and the hook groove 242 is equipped with the elastic element 5 and acts on the hook portion 41, is used to strengthen the connecting strength of hook portion 41 and hook groove 242, by adopting a plurality of detachable contactor assembly 3, effectively solve the maintenance cost high, resource waste and other problems in the prior art, when the contactor assembly 3 of a road needs to be replaced due to excessive wear or failure, only need to carry out the quick disassembly and replacement of the contactor assembly 3 of the road, do not need to replace the whole AC contactor, this design not only reduces the replacement cost, but also reduces the time required for overall replacement, thereby reducing the disassembly difficulty, and wiring, installation and a series of workloads, compared with the prior art, the utility model has the advantages of low replacement cost, economic and environmental protection, can significantly improve the maintenance efficiency and resource utilization of AC contactor;

[0044] It is worth mentioning that the two side walls of the base 1 are provided with at least one first through hole 11;

[0045] It is worth mentioning that the two sides of the cover 6 are provided with extension parts 61 which can be contracted towards the middle direction, the extension parts 61 are provided with barbs 62 and are buckled in the first through holes 11, when the cover 6 needs to be disassembled, a pushing force is applied to the extension parts 61 to make them contract towards the middle direction, so that the barbs 62 are separated from the first through holes 11, and the connection between the cover 6 and the base 1 is released; when installation, the cover 6 is guided along the base 1, so that the barbs 62 enter the first through holes 11, and the connection between the cover 6 and the base 1 is completed, it should be noted that the guiding function provided by the base 1 for the cover 6 is a conventional design and prior art;

[0046] It is worth mentioning that the coil assembly 2 comprises a static core 21, the static core 21 is provided with a coil holder 22, the coil holder 22 is provided with a liftable dynamic core 23, the dynamic core 23 is provided with a linkage plate 24, the linkage plate 24 is provided with at least one convex part 241, a hook groove 242 is arranged at one end of the convex part 241, the linkage plate 24 is provided with a slot 243, and a reset spring 43 is usually arranged between the static core 21 and the dynamic core 23; for those skilled in the art, it belongs to the prior art and does not belong to the protection focus of the utility model, so it is not displayed; when the coil holder 22 is not powered, the reset spring 43 exerts an upward force on the dynamic core 23, drives the linkage plate 24 and the contact support 4 to move upward, and makes the moving contact 44 away from the static contact 34; at this time, the circuit is in an off state; when the coil holder 22 is powered, the static core 21 generates a magnetic attraction force, which generates an attractive force on the dynamic core 23 and overcomes the reaction force of the reset spring 43, thereby driving the dynamic core 23 to move in the direction of the static core 21, the linkage plate 24 drives the contact support 4 to descend together, and the moving contact 44 is in abutment with the static contact 34; at this time, the circuit is in a conducting state;

[0047] It is worth mentioning that the elastic member 5 is provided with a fixed part 51 and is inserted in the slot 243, the two sides of the elastic member 5 are provided with curved action parts 52 and are located above the hook groove 242, the extension of the action part 52 is provided with an inclined guide part 53, the fixed part 51 prevents the elastic member 5 from moving with the hook part 41, when the hook part 41 initially enters the hook groove 242 and abuts against the guide part 53, with the movement of the hook part 41 on the guide part 53, the action part 52 is forced to move upward and is in an energy storage state, thereby reducing the resistance of the hook part 41 entering the hook groove 242; when the hook part 41 completely enters the hook groove 242, the action part 52 releases the acting force, so that the hook part 41 is tightly fitted with the hook groove 242, thereby increasing the friction between them;

[0048] It is worth mentioning that the hook part 41 is provided with a pressure receiving groove 411 for accommodating the action part 52, the pressure receiving groove 411 strengthens the connection between the action part 52 and the hook part 41, prevents the influence of external force, and avoids displacement of the hook part 41 in the hook groove 242;

[0049] It is worth mentioning that the base 1 is provided with at least one second through hole 12 and is located on both sides of the coil assembly 2, the two ends of the second through hole 12 are provided with third through holes 13, one of the third through holes 13 of the second through hole 12 is located close to the hook groove 242, and the third through hole 13 of the second through hole 12 away from the hook groove 242 is located away from the hook groove 242; the position of the third through hole 13 is designed so that the hook part 41 is connected with the hook groove 242, and the blocking part 312 is far away from the second through hole 12;

[0050] It is worth mentioning that the contact assembly 3 comprises a shell 31, the two sides of the shell 31 are provided with a terminal 32, the terminal 32 is provided with a static spring piece 33, and the static spring piece 33 is provided with a static contact 34.

[0051] It is worth mentioning that the bottom of the shell 31 is provided with a connecting part 311, and passes through the second through hole 12, the two sides of the connecting part 311 are provided with blocking parts 312, and pass through the third through hole 13, the pushing force is applied to one end of the shell 31, the blocking parts 312 abut against the inner top of the base 1, in order to further strengthen the connection strength of the shell 31 and the base 1, after the blocking parts 312 are away from the third through hole 13, and abut against the shell 31, the connection strength of the shell 31 and the base 1 is strengthened, when the blocking parts 312 move, the hook parts 41 enter the hook grooves 242;

[0052] It is worth mentioning that the contact support 4 is arranged between the two static spring sheets 33, the contact support 4 is provided with a moving contact bridge 42, the back of the moving contact bridge 42 is provided with a spring 43, and the spring 43 applies an upward force to the inner top of the contact support 4, the moving contact bridge 42 is provided with a moving contact point 44 corresponding to the static contact point 34, when the contact support 4 descends, the distance between the contact support 4 and the moving contact bridge 42 is shortened, the spring 43 applies a downward force to the moving contact bridge 42, and the moving contact point 44 is tightly abutted against the static contact point 34.

[0053] The use principle of the utility model will be described as follows:

[0054] When the contact assembly 3 needs to be replaced, first, the cover 6 is disassembled, and then a pushing force is applied to one end of the contact assembly 3, the pushing force is greater than the force applied by the elastic piece 5 on the hook part 41, so that the connection between the hook part 41 and the hook groove 242 is released, the blocking part 312 moves to the third through hole 13, and thus the disassembly of the contact assembly 3 is completed;

[0055] When the new contact assembly 3 is installed, the blocking part 312 is inserted into the third through hole 13, the hook part 41 is aligned in the direction of the entrance of the hook groove 242, a pushing force is applied to make the hook part 41 enter the hook groove 242, the blocking part 312 is away from the third through hole 13, and the connection between the contact assembly 3 and the coil assembly 2 is completed, and then the cover 6 and the base 1 are connected and fixed, the above design can realize the quick replacement of the contact assembly 3 without the help of other tools, and the product has the advantage of convenient replacement, and the maintenance efficiency is significantly improved.

[0056] The above content is a further detailed description of the utility model in combination with the specific embodiment, and cannot be regarded as the limitation of the specific embodiment of the utility model to these descriptions, and for ordinary skilled persons in the technical field to which the utility model belongs, some simple deductions or replacements can be made without departing from the concept of the utility model, and all of them should be regarded as belonging to the protection range determined by the claims submitted by the utility model.

Claims

1. A modular AC contactor, comprising a base (1) and a coil assembly (2) disposed therein, characterized in that: The coil assembly (2) is provided with a hook groove (242), the base (1) is provided with a detachable cover (6), the base (1) is provided with at least one detachable contact assembly (3), the contact assembly (3) is disposed inside the cover (6), the contact assembly (3) is provided with a liftable contact bracket (4), the contact bracket (4) is provided with a hook (41) and is embedded in the hook groove (242) and abuts against it, the hook groove (242) is provided with an elastic element (5) and acts on the hook (41) to enhance the connection strength between the hook (41) and the hook groove (242).

2. The modular AC contactor according to claim 1, characterized in that: The base (1) has at least one first through hole (11) on each of its two side walls.

3. The modular AC contactor according to claim 2, characterized in that: The cover (6) has extensions (61) on both sides that can retract toward the center. The extensions (61) are provided with barbs (62) and are fastened to the first through hole (11).

4. The modular AC contactor according to claim 1, characterized in that: The coil assembly (2) includes a stationary iron core (21), the stationary iron core (21) is provided with a coil frame (22), the coil frame (22) is provided with a movable iron core (23) that can be raised and lowered, the movable iron core (23) is provided with a linkage plate (24), the linkage plate (24) is provided with at least one protrusion (241), the hook groove (242) is provided at one end of the protrusion (241), and the linkage plate (24) is provided with a slot (243).

5. The modular AC contactor according to claim 4, characterized in that: The elastic member (5) is provided with a fixing part (51) and inserted into the slot (243). The elastic member (5) is provided with curved action parts (52) on both sides and located above the hook groove (242). The extension of the action part (52) is provided with an inclined guide part (53).

6. The modular AC contactor according to claim 5, characterized in that: The hook (41) is provided with a pressure-bearing groove (411) for accommodating the function part (52).

7. The modular AC contactor according to claim 1, characterized in that: The base (1) is provided with at least one second through hole (12) and located on both sides of the coil assembly (2). The two ends of the second through hole (12) are provided with third through holes (13). The third through hole (13) of one of the second through holes (12) is close to the hook groove (242), and the third through hole (13) of the other second through hole (12) is far away from the hook groove (242).

8. The modular AC contactor according to claim 7, characterized in that: The contact assembly (3) includes a housing (31), and wiring terminals (32) are provided on both sides of the housing (31). The wiring terminals (32) are provided with stationary springs (33), and the stationary springs (33) are provided with stationary contacts (34).

9. The modular AC contactor according to claim 8, characterized in that: The bottom of the housing (31) is provided with a connecting part (311) and passes through the second through hole (12). The two sides of the connecting part (311) are provided with blocking parts (312) and pass through the third through hole (13). A pushing force is applied to one end of the housing (31) so that the blocking part (312) abuts against the inner top of the base (1).

10. The modular AC contactor according to claim 8, characterized in that: The contact support (4) is disposed between two stationary springs (33). The contact support (4) is provided with a moving contact bridge (42). A spring (43) is provided on the back of the moving contact bridge (42) and applies an upward force to the inner top of the contact support (4). The moving contact bridge (42) is provided with a moving contact (44) corresponding to the stationary contact (34).

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