Side outgoing line high-voltage direct-current contactor

Abstract

The utility model discloses a side outgoing line high-voltage direct current contactor, which comprises a contactor body and an external assembly, the contactor body comprises a shell and a top cover arranged on the upper end face of the shell, and the side wall of one side, close to an auxiliary contact, of the shell is provided with a first line outlet for a first lead to pass through; the external assembly is arranged on the side wall of the shell and comprises a circuit board and a protective cover which covers the circuit board and is connected with the side wall of the shell, and the protective cover is provided with a second wire outlet for a second lead to pass through. According to the utility model, the external assembly is arranged at one side of the housing of the contactor body, and the side wall of the housing is provided with the wire outlet for the lead to pass through, so that the lead is vertical to the main contact, the problem that the coil cannot supply power or feedback signals are invalid due to the fact that the lead is extruded when the main contact is connected to a copper bar is avoided, and the contactor is simple in structure and convenient to use. And the lead layout is orderly and reasonable.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a side-outlet high-voltage DC contactor. Background Art

[0002] As an electronic control device, the contactor (also known as a relay) uses electricity, light, magnetism, heat, etc. (i.e., input quantity) as the medium (tool), and transmits and controls the circuit or signal (i.e., output quantity). It has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). The two circuits are coupled through internal mechanical or electronic devices to achieve linkage of the two circuit states.

[0003] Most existing high-voltage DC contactors use coils as their driving units, so lead wires are set at both ends of the coil for users to connect to the power supply to control the on / off of the contactor. Contactors equipped with auxiliary contacts also have lead wires set to feedback the status of the main contacts (i.e. on / off). However, most existing high-voltage DC contactors lead the lead wires uniformly from the upper end surface of the contactor (i.e. parallel to the main contacts) to connect to external electrical control equipment; thus, when the main contacts are connected to the copper busbar, the lead wires are squeezed, causing the coil to be unable to power or the feedback signal to fail. Summary of the invention

[0004] In order to overcome the above defects, the utility model provides a side-outlet high-voltage DC contactor, in which the lead-out wires are led out from the side of the contactor body, thereby structurally avoiding the occurrence of the above failure situation.

[0005] The utility model adopts a technical solution to solve the technical problem: to provide a side-outlet high-voltage DC contactor, comprising:

[0006] A contactor body, the contactor body comprising a shell and a top cover arranged on the upper end surface of the shell, the shell having a first outlet for a first lead wire to pass through on a side wall near the auxiliary contact;

[0007] The external component is arranged on the side wall of the shell, and comprises a circuit board and a protective cover arranged outside the circuit board and connected to the side wall of the shell, wherein the protective cover is provided with a second wire outlet for the second lead wire to pass through.

[0008] As a further improvement of the present utility model, the contactor body further comprises an end cover, and the top cover fixes the end cover to the upper end surface of the housing;

[0009] A first notch is formed on the upper end surface of the housing side wall, a convex block matched with the first notch is formed on the peripheral wall of the end cover, and the first wire outlet is formed between two relatively close horizontal end surfaces of the first notch and the convex block.

[0010] As a further improvement of the utility model, a plurality of lower wire grooves arranged at intervals are provided on the horizontal end surface of the first notch, a plurality of upper wire grooves are provided on the horizontal end surface of the protrusion, and the plurality of upper wire grooves are respectively arranged corresponding to the plurality of lower wire grooves;

[0011] When the end cover is fixedly mounted on the upper end surface of the housing, the plurality of upper wire troughs and the plurality of lower wire troughs are connected to form a plurality of the first wire outlets.

[0012] As a further improvement of the present invention, the protective cover is provided with two second notches on an upper end surface on one side close to the side wall of the shell, and two second wire outlets are formed between the two second notches and the outer side wall of the shell.

[0013] As a further improvement of the present invention, one of the second wire outlets is arranged directly below the first wire outlet of the housing.

[0014] As a further improvement of the present invention, the housing is provided with two connecting posts on a side wall facing the first wire outlet, and the two connecting posts are symmetrically arranged on both sides of the central axis of the housing along the horizontal direction;

[0015] The circuit board and the protective cover are detachably connected to the connecting column via two self-tapping screws.

[0016] As a further improvement of the utility model, the protective cover and the circuit board are respectively provided with a first connection hole and a second connection hole corresponding to the connection column for the self-tapping screw to pass through.

[0017] As a further improvement of the present invention, the side wall of the protective cover facing the circuit board is respectively provided with supporting bosses outside the two first connecting holes, and the two supporting bosses cooperate with the two connecting columns to fix and support the circuit board in the protective cover.

[0018] The beneficial effects of the utility model are as follows: by arranging the external component on one side of the shell of the contactor body, and providing an outlet for the lead wire to pass through on the side wall of the shell, the lead wire and the main contact are arranged vertically, thereby avoiding the problem that the coil cannot be powered or the feedback signal fails due to squeezing the lead wire when the main contact is connected to the copper busbar, and the structure is simple, and the lead wire layout is orderly and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model without connecting the first lead and the second lead;

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the decomposed structure;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model in the AA direction.

[0023] Combined with the accompanying drawings, the following description is given:

[0024] 1. Contactor body; 11. Shell; 111. First notch; 1111. Lower wire duct; 12. Top cover; 13. Auxiliary contact; 131. First lead; 14. First wire outlet; 15. End cover; 151. Bump; 1511. Upper wire duct; 16. Connecting column; 2. External component; 21. Circuit board; 211. Second lead; 212. Second connecting hole; 22. Protective cover; 221. Second notch; 222. First connecting hole; 2221. Support boss; 23. Second wire outlet; 24. Self-tapping screw. DETAILED DESCRIPTION

[0025] A preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.

[0026] See also Figures 1 to 4 The side-outlet high-voltage DC contactor provided by the utility model comprises a contactor body 1 and an external component 2 arranged outside the contactor body 1 and electrically connected to the contactor body 1. The contactor body 1 comprises a housing 11 and a top cover 12 arranged on the upper end surface of the housing 11. The known housing 11 is provided with a contact unit, a drive rod unit and a coil, and the connection between the first lead 131 and the second lead 211 and the auxiliary contact 13 and the coil is the same as the prior art, and this application will not repeat them.

[0027] Specifically, the housing 11 is provided with a first outlet 14 for the first lead 131 to pass through on a side wall near the auxiliary contact 13. One end of the first lead 131 is connected to the auxiliary contact 13, and the other end is connected to an external electric control device (not shown in the figure). The external component 2 is provided on the side wall of the housing 11, and is mainly used to control the on and off of the coil in the contactor body. The external component 2 includes a circuit board 21 and a protective cover 22 that is provided outside the circuit board 21 and connected to the side wall of the housing 11. The protective cover 22 is provided with a second outlet 23 for the second lead 211 to pass through; wherein, the second lead 211 is used to connect the circuit board and the coil, so the second lead 211 passes through the protective cover 22 from the second outlet 23, and passes into the contactor body 1 from the first outlet 14 and is connected to the coil. That is, the first lead wire 131 and the second lead wire 211 both pass through the first wire outlet 14 in a horizontal state, so that the lead wires and the main contacts are arranged vertically without any interference, thereby ensuring the effectiveness of the lead wires.

[0028] Furthermore, the contactor body 1 further includes an end cover 15, and the top cover 12 fixes the end cover 15 to the upper end surface of the housing 11; a first notch 111 is provided on the upper end surface of the side wall of the housing 11, and a protrusion 151 matching the first notch 111 is provided on the peripheral wall of the end cover 15, and a first wire outlet 14 is formed between two relatively close horizontal end surfaces of the first notch 111 and the protrusion 151. Specifically, the end cover 15 is pressed against the upper end surface of the housing 11 through the top cover 12, so that the lower end surface of the protrusion 151 on the end cover 15 fastens the first lead 131 and the second lead 211 passing through the first wire outlet 14 to the first wire outlet 14, so that the lead maintains stability while facilitating the assembly of the lead.

[0029] Furthermore, a plurality of lower wire grooves 1111 are provided at intervals on the horizontal end surface of the first notch 111, and a plurality of upper wire grooves 1511 are provided on the horizontal end surface of the protrusion 151, and the plurality of upper wire grooves 1511 are respectively provided corresponding to the plurality of lower wire grooves 1111; when the end cover 15 is fixedly mounted on the upper end surface of the housing 11, the plurality of upper wire grooves 1511 and the plurality of lower wire grooves 1111 are connected to form a plurality of first wire outlets 14. Specifically, four first wire outlets 14 are provided, and each first wire outlet 14 is a cylindrical hole structure formed by connecting the upper wire groove 1511 and the lower wire groove 1111, and the cylindrical hole structure is arranged to match the lead wire diameter, so that the leads are spaced and arranged in an orderly manner, which is convenient for connecting and fixing the leads to the contactor body.

[0030] Furthermore, the protective cover 22 is provided with two second notches 221 on the upper end surface of one side close to the side wall of the housing 11, and two second wire outlets 23 are formed between the two second notches 221 and the outer wall of the housing 11. One of the second wire outlets 23 is arranged directly below the first wire outlet 14 of the housing 11, so as to facilitate the second lead 211 connected to the coil in the contactor body 1 to be led vertically downward and connected to the circuit board 21, and the other second wire outlet 23 is used to lead out the second lead 211 connecting the circuit board 21 and the external power supply.

[0031] Furthermore, the housing 11 is provided with two connecting posts 16 on the side wall facing the first wire outlet 14, and the two connecting posts 16 are symmetrically arranged on both sides of the central axis of the housing 11 along the horizontal direction; the protective cover 22 and the circuit board 21 are respectively provided with a first connecting hole 222 and a second connecting hole 212 for the self-tapping screws 24 to pass through the corresponding connecting posts 16. The circuit board 21 and the protective cover 22 are detachably connected to the connecting posts 16 by two self-tapping screws 24, so as to facilitate the disassembly, assembly and replacement of the external component 2.

[0032] Furthermore, on the side wall of the protective cover 22 facing the circuit board 21, support bosses 2221 are respectively provided outside the two first connection holes 222, and the two support bosses 2221 cooperate with the two connection columns 16 to fix the circuit board 21 in the protective cover 22; the circuit board 21 is fixedly installed in the middle of the space in the protective cover 22, so that the second lead is formed on both sides of the circuit board 21 in the protective cover and the space for the electrical components on the circuit board is avoided. The first connection hole 222 is a countersunk fixing hole, so that the head of the self-tapping screw 24 is placed on the countersunk head of the first connection hole 222, so that the outer side of the protective cover 22 remains flat.

[0033] In summary, the side-outlet high-voltage DC contactor provided by the utility model arranges the external component on one side of the shell of the contactor body, and provides an outlet for the lead wire to pass through on the side wall of the shell, so that the lead wire and the main contact are arranged vertically, thereby avoiding the problem that the lead wire is squeezed when the main contact is connected to the copper bus, resulting in the coil being unable to power supply or the feedback signal being invalid. The structure is simple and the lead wire layout is orderly and reasonable.

[0034] In the above description, many specific details are described to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person familiar with the technical field can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A side-outlet high-voltage DC contactor, characterized in that: include: A contactor body (1), the contactor body (1) comprising a housing (11) and a top cover (12) arranged on an upper end surface of the housing (11), the housing (11) having a first wire outlet (14) on a side wall close to the auxiliary contact (13) for a first lead wire (131) to pass through; An external component (2) is arranged on a side wall of the housing (11), comprising a circuit board (21) and a protective cover (22) arranged outside the circuit board (21) and connected to the side wall of the housing (11), wherein the protective cover (22) is provided with a second wire outlet (23) for a second lead wire (211) to pass through.

2. The side-outlet high-voltage DC contactor according to claim 1, characterized in that: The contactor body (1) further comprises an end cover (15), and the top cover (12) fixes the end cover (15) to the upper end surface of the housing (11); A first notch (111) is provided on the upper end surface of the side wall of the housing (11), a convex block (151) matching the first notch (111) is provided on the peripheral wall of the end cover (15), and the first wire outlet (14) is formed between two relatively close horizontal end surfaces of the first notch (111) and the convex block (151).

3. The side-outlet high-voltage DC contactor according to claim 2 is characterized in that: A plurality of lower wire grooves (1111) arranged at intervals are provided on the horizontal end surface of the first notch (111), a plurality of upper wire grooves (1511) are provided on the horizontal end surface of the protrusion (151), and the plurality of upper wire grooves (1511) are respectively arranged corresponding to the plurality of lower wire grooves (1111); When the end cover (15) is fixedly mounted on the upper end surface of the housing (11), the plurality of upper wire grooves (1511) and the plurality of lower wire grooves (1111) are connected to form a plurality of first wire outlets (14).

4. The side-outlet high-voltage DC contactor according to claim 1, characterized in that: The protective cover (22) is provided with two second notches (221) on an upper end surface on one side close to the side wall of the housing (11), and two second wire outlets (23) are formed between the two second notches (221) and the outer side wall of the housing (11).

5. The side-outlet high-voltage DC contactor according to claim 4, characterized in that: One of the second wire outlets (23) is arranged directly below the first wire outlet (14) of the housing (11).

6. The side-outlet high-voltage DC contactor according to claim 1, characterized in that: The housing (11) is provided with two connecting columns (16) on a side wall facing the first wire outlet (14), and the two connecting columns (16) are symmetrically arranged on both sides of the central axis of the housing (11) along a horizontal direction; The circuit board (21) and the protective cover (22) are detachably connected to the connecting column (16) via two self-tapping screws (24).

7. The side-outlet high-voltage DC contactor according to claim 6, characterized in that: The protective cover (22) and the circuit board (21) are respectively provided with a first connection hole (222) and a second connection hole (212) for the self-tapping screw (24) to pass through, corresponding to the connection column (16).

8. The side-outlet high-voltage DC contactor according to claim 7, characterized in that: On a side wall of the protective cover (22) facing the circuit board (21), support bosses (2221) are respectively arranged outside the two first connection holes (222); the two support bosses (2221) cooperate with the two connection columns (16) to fix and support the circuit board (21) in the protective cover (22).

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