High-voltage direct-current contactor with quick-plug terminal

Abstract

The utility model provides a high-voltage direct current contactor with a fast plug terminal, which comprises a shell, a driving mechanism and an actuating mechanism, the driving mechanism and the actuating mechanism are arranged in the shell, the driving mechanism comprises a coil framework and a baffle connected to the periphery of the coil framework, and the periphery of the coil framework is divided into a first area and a second area by the baffle. One side of the baffle plate is provided with a first quick-plug terminal and a wire inlet terminal, and the other side of the baffle plate is provided with a second quick-plug terminal and a wire outlet terminal, so that a coil is wound on the wire inlet terminal, the first area, the second area and the wire outlet terminal in sequence; the coil winding stability of the small-size coil framework is improved, and the coil is prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the field of DC contactors, in particular to a high-voltage DC contactor with quick-plug terminals. Background Art

[0002] Existing high-voltage DC contactors power the coil via a connector, and the contacts connect to the load via screw-locked copper plates. Their internal structure consists of a drive mechanism and an actuator. The drive mechanism consists of a coil assembly located below the pole piece. The actuator consists of a moving iron core vertically placed within a sleeve. The static iron core is connected to the pole piece via expansion riveting. A reaction spring is located between the moving and static iron cores and positioned and installed through the inner holes of the moving and static iron cores. The sleeve is placed in the space enclosed by the coil skeleton. The bracket assembly is arranged vertically, and the rear end of the bracket assembly is fixed to the moving iron core via argon arc welding or glue. The upper portion of the bracket assembly positions the contact bridge. An internal positioning sleeve is connected to a contact spring located below and supporting the contact bridge. Above the contact bridge is a ceramic base assembly, where the contact point rod located on the ceramic base is arranged opposite the contact bridge. The yoke is connected to the pole piece via expansion riveting, and the coil assembly is placed between the pole piece and the yoke.

[0003] However, in order to ensure the effectiveness of the coil, the existing high-voltage DC contactor usually needs to be equipped with a larger coil skeleton, which leads to a larger volume of the overall high-voltage DC contactor. If the coil skeleton is reduced, it is easy to cause the coil to be wound loosely, resulting in the problem of loose coils. At the same time, it will also bring about the problem of reduced winding space, which in turn leads to a reduction in the number of winding turns. The reduced number of turns leads to a reduction in the electromagnetic force provided by the coil. Utility Model Content

[0004] The purpose of the utility model is to provide a high-voltage DC contactor with quick-insert terminals, which improves the coil winding stability of a small-volume coil skeleton, avoids the coil from being loose, and maximizes the use of the coil winding space of the contactor product.

[0005] To solve the above technical problems, the present utility model provides a high-voltage DC contactor with quick-plug terminals, including a housing, a driving mechanism and an actuating mechanism arranged inside the housing, the driving mechanism including a coil bobbin and a baffle connected to the outer periphery of the coil bobbin, the baffle dividing the outer periphery of the coil bobbin into a first area and a second area, and a first quick-plug terminal and an input terminal are provided on one side of the baffle, and a second quick-plug terminal and an output terminal are provided on the other side of the baffle, so that the coil is wound around the input terminal, the first area, the second area and the output terminal in sequence.

[0006] Furthermore, a first wire inlet groove is provided on one side of the baffle close to the first area, and one end of the first wire inlet groove is inclined toward the wire inlet terminal.

[0007] Furthermore, a notch is provided on the side of the baffle, and a fastening block is provided at the notch, so that when the coil enters the second area from the first area, the coil is wound around the fastening block.

[0008] Furthermore, a second wire inlet groove is provided on one side of the baffle close to the second area, and one end of the second wire inlet groove is inclined toward the notch.

[0009] Furthermore, the first quick-plug terminal and the incoming terminal are integrally formed in the baffle, and the second quick-plug terminal and the outgoing terminal are integrally formed in the baffle.

[0010] Furthermore, the actuating mechanism includes a sleeve placed inside the coil frame, a static iron core arranged inside the sleeve, and a movable iron core movably arranged inside the sleeve. A reaction spring is provided between the movable iron core and the static iron core, and the end of the static iron core away from the moving iron core has a bracket. The movable iron core is connected to the bracket after passing through the static iron core through a push rod. A contact bridge is provided on one side of the bracket. A contact spring is provided between the contact bridge and the bracket. A contact point rod is provided inside the shell, and the contact point rod matches the contact bridge; the contact point rod is connected to a load quick-plug terminal through an expansion riveting fixture.

[0011] The beneficial effect of the present invention is that the outer periphery of the coil skeleton is divided into a first area and a second area by the baffle, so that when the coil is wound, it can be wound in sections in the first area and the second area in sequence, thereby improving the winding stability of each area and avoiding the situation where the coil on the outer periphery of the coil skeleton becomes loose when being wound. At the same time, since the head and tail of the coil are respectively wound at the input terminal and the output terminal, the head and tail of the coil can be positioned respectively by the input terminal and the output terminal, thereby ensuring the winding stability of the two ends and the circumference of the coil, increasing the winding stability of the small-volume coil skeleton, and ensuring that when the first quick-plug terminal and the second quick-plug terminal are connected to the circuit, the coil can be kept energized through the input terminal and the output terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the present utility model.

[0013] Figure 2 It is a front view of the present utility model.

[0014] Figure 3 This utility model Figure 2 Section along line AA.

[0015] Figure 4 It is a side view of the present utility model.

[0016] Figure 5 This utility model Figure 4 Cross-section along line BB.

[0017] Figure 6 The axial side of the coil skeleton in the utility model Figure 1 .

[0018] Figure 7 The axial side of the coil skeleton in the utility model Figure 2 .

[0019] Figure 8 It is a schematic diagram of the positions of the first area and the second area in the present invention.

[0020] Figure numerals: 1. Shell; 2. Coil skeleton; 3. Baffle; 4. First area; 5. Second area; 6. First quick-plug terminal; 7. Inlet terminal; 8. Second quick-plug terminal; 9. Outlet terminal; 10. Coil; 11. First inlet groove; 12. Notch; 13. Fastening block; 14. Second inlet groove; 15. Sleeve; 16. Static iron core; 17. Moving iron core; 18. Reaction spring; 19. Bracket; 20. Contact bridge; 21. Contact spring; 22. Contact point rod; 23. Riveting fixture; 24. Load quick-plug terminal. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0022] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0023] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0024] like Figures 1-8The utility model provides a high-voltage DC contactor with a quick-plug terminal, including a shell 1, a driving mechanism and an action mechanism arranged inside the shell 1, the driving mechanism including a coil skeleton 2, a baffle 3 connected to the outer periphery of the coil skeleton 2, the baffle 3 divides the outer periphery of the coil skeleton 2 into a first area 4 and a second area 5, and a first quick-plug terminal 6 and an input terminal 7 are provided on one side of the baffle 3, and a second quick-plug terminal 8 and an output terminal 9 are provided on the other side of the baffle 3, so that the coil 10 is wound around the input terminal 7, the first area 4, the second area 5 and the output terminal 9 in sequence.

[0025] The baffle is used to separate the periphery of the coil skeleton into a first area and a second area, so that when the coil is wound, it can be wound in sections in the first area and the second area in sequence, thereby improving the winding stability of each area and avoiding the looseness of the coil when winding on the periphery of the coil skeleton. At the same time, since the head and tail of the coil are respectively wound on the input terminal and the output terminal, the head and tail of the coil can be positioned respectively through the input terminal and the output terminal, thereby ensuring the winding stability of the two ends and the circumference of the coil, increasing the winding stability of the small-volume coil skeleton, and ensuring that when the first quick-plug terminal and the second quick-plug terminal are connected to the circuit, the coil can be kept energized through the input terminal and the output terminal.

[0026] In one embodiment of this solution, the first quick-connect terminal 6 and the incoming terminal 7 are integrally formed in the baffle 3 , and the second quick-connect terminal 8 and the outgoing terminal 9 are integrally formed in the baffle 3 .

[0027] Specifically, the first quick-plug terminal and the incoming terminal are first integrally molded, and then the first quick-plug terminal and the incoming terminal are injection molded into the baffle, so that the file is wrapped around the outside of the first quick-plug terminal and the incoming terminal, thereby improving the stability of the first quick-plug terminal and the incoming terminal; the second quick-plug terminal and the outgoing terminal are injection molded in the same manner as above.

[0028] Preferably, a first wire inlet groove 11 is provided on one side of the baffle 3 close to the first area 4 , and one end of the first wire inlet groove 11 is inclined toward the wire inlet terminal 7 .

[0029] Specifically, after the coil is wound around the wire input terminal, the coil is first laid out along the first wire input groove, so that the coil can locate the wire input position entering the first area through the first wire input groove, thereby avoiding the problem of loose wire between the wire input terminal and the first area. Subsequently, after the coil enters the first area along the first wire input groove, the coil is wound into the first area to improve the stability of the coil winding.

[0030] Preferably, a notch 12 is provided on a side of the baffle 3 , and a fastening block 13 is provided at the notch 12 , so that when the coil 10 enters the second area 5 from the first area 4 , the coil 10 is wound around the fastening block 13 .

[0031] Specifically, when the coil is wound in the first area and needs to enter the second area, the coil is passed through the gap and wound onto the fastening block, so that the coil between the first area and the second area can be fastened by the fastening block to prevent the coil at this position from being unstable due to insufficient tension. The coil is then wound in the second area to ensure that the coil is stably wound along the entire coil frame.

[0032] Preferably, a second wire inlet groove 14 is provided on one side of the baffle 3 close to the second area 5 , and one end of the second wire inlet groove 14 is inclined toward the notch 12 .

[0033] Specifically, after the coil is wound around the fastening block, the coil is arranged along the second wire feed groove so that the coil between the fastening block and the second area can be guided and positioned through the second wire feed groove to avoid the coil between the fastening block and the second area from becoming loose, thereby further improving the tension between the first area and the second area.

[0034] Preferably, the actuating mechanism includes a sleeve 15 placed inside the coil skeleton 2, a static iron core 16 arranged inside the sleeve 15, and a movable iron core 17 movably arranged inside the sleeve 15. A reaction spring 18 is provided between the movable iron core 17 and the static iron core 16, and the end of the static iron core 16 away from the movable iron core 17 has a bracket 19. The movable iron core 17 is connected to the bracket 19 after passing through the static iron core 16 through a push rod. A contact bridge 20 is provided on one side of the bracket 19. A contact spring 21 is provided between the contact bridge 20 and the bracket 19. A contact point rod 22 is provided inside the shell 1, and the contact point rod 22 matches the contact bridge 20; the contact point rod 22 is connected to the load quick-plug terminal 24 through a riveting fixture 23.

[0035] Specifically, when the coil is wound and powered on, the first quick-plug terminal and the second quick-plug terminal are connected to the circuit by plugging to energize the contactor. At this time, the moving iron core moves toward the static iron core, causing the contact spring and the reaction spring to compress, thereby closing the contact bridge and the contact point rod until the moving iron core contacts the static iron core, indicating that the DC contactor's attraction action is completed, and the load is also connected to the load quick-plug terminal by plugging. When the contactor is powered off, the main circuit is disconnected under the reaction force of the contact spring and the reaction spring, and thus a complete action of the contactor is completed.

[0036] It is worth mentioning that through the setting of the expansion riveting jig, the space between the contact point rod and the load quick-plug terminal is supported by the expansion riveting jig, which improves the stability of the connection between the two. At the same time, the expansion riveting jig can also be used to expand the space to increase different connection methods, such as PCB connection, snap-on assembly, etc.

[0037] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A high-voltage DC contactor with quick-connect terminals, characterized in that: The invention comprises a housing (1), a driving mechanism and an action mechanism arranged inside the housing (1); the driving mechanism comprises a coil frame (2), a baffle (3) connected to the outer periphery of the coil frame (2); the baffle (3) divides the outer periphery of the coil frame (2) into a first area (4) and a second area (5); a first quick-plug terminal (6) and an incoming terminal (7) are provided on one side of the baffle (3); and a second quick-plug terminal (8) and an outgoing terminal (9) are provided on the other side of the baffle (3), so that the coil (10) is wound around the incoming terminal (7), the first area (4), the second area (5), and the outgoing terminal (9) in sequence.

2. The high-voltage DC contactor with quick-connect terminals according to claim 1, characterized in that: A first wire inlet groove (11) is provided on one side of the baffle (3) close to the first area (4), and one end of the first wire inlet groove (11) is inclined toward the wire inlet terminal (7).

3. The high-voltage DC contactor with quick-connect terminals according to claim 1, characterized in that: A notch (12) is provided on the side of the baffle (3), and a fastening block (13) is provided at the notch (12), so that when the coil (10) enters the second area (5) from the first area (4), the coil (10) is wound around the fastening block (13).

4. The high-voltage DC contactor with quick-connect terminals according to claim 3, characterized in that: A second wire inlet groove (14) is provided on one side of the baffle (3) close to the second area (5), and one end of the second wire inlet groove (14) is inclined toward the notch (12).

5. The high-voltage DC contactor with quick-connect terminals according to claim 1, characterized in that: The first quick-plug terminal (6) and the incoming terminal (7) are integrally formed in the baffle (3), and the second quick-plug terminal (8) and the outgoing terminal (9) are integrally formed in the baffle (3).

6. The high-voltage DC contactor with quick-connect terminals according to claim 1, characterized in that: The action mechanism comprises a sleeve (15) placed inside the coil skeleton (2), a static iron core (16) arranged inside the sleeve (15), and a movable iron core (17) arranged inside the sleeve (15). A reaction spring (18) is provided between the movable iron core (17) and the static iron core (16), and a bracket (19) is provided at one end of the static iron core (16) away from the movable iron core (17). The movable iron core (17) is connected to the bracket (19) after passing through the static iron core (16) via a push rod. A contact bridge (20) is provided on one side of the bracket (19). A contact spring (21) is provided between the contact bridge (20) and the bracket (19). A contact point rod (22) is provided inside the housing (1), and the contact point rod (22) matches the contact bridge (20); the contact point rod (22) is connected to a load quick-connect terminal (24) via an expansion riveting jig (23).

Images