CN217521915U

CN217521915U - Direct current contactor

Info

Publication number: CN217521915U
Application number: CN202220818721.3U
Authority: CN
Inventors: 朱欢欢; 高云雅
Original assignee: Xgvac Technology Shanghai Co ltd
Current assignee: Xgvac Technology Shanghai Co ltd
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-09-30
Anticipated expiration: 2032-04-01

Abstract

The utility model relates to a direct current contactor, which comprises a housin, the opening is seted up to casing length direction one end, the lid is installed to the opening part, and the coil former has been placed to the casing bottom, around establishing the coil on the coil former, placed the mount pad on the coil former, vertical sliding is provided with the slide bar on the mount pad, magnet has set firmly on the slide bar, and coil former one end has set firmly the conducting strip to the slide bar, install two joints on the lid, be provided with the elastic component between conducting strip and the mount pad, install joint spare on the coil former, install the terminal on the coil former, the terminal passes through joint spare demountable installation on the coil former, and joint spare is the metalwork, joint spare one end fixed connection coil, in terminal one end stretched into the joint spare, and through joint spare switch-on coil, the other end runs through the lid. This application has the effect that reduces the cost of changing the terminal.

Description

Direct current contactor

Technical Field

The application relates to the field of contactors, in particular to a direct current contactor.

Background

The contactor is divided into an alternating current contactor and a direct current contactor, and the contactor is broadly characterized in that a coil flows through current to generate a magnetic field in industrial electricity, so that a contact is closed, and the effects of controlling a loaded electric appliance and protecting a circuit are achieved.

Current direct current contactor (as shown in figure 1) includes casing 1, opening 2 is seted up to 1 length direction one end of casing, opening 2 department installs lid 5, and coil former 6 has been placed to casing 1 bottom, around establishing coil 7 on the coil former 6, placed mount pad 8 on the coil former 6, vertical sliding is provided with slide bar 9 on the mount pad 8, magnet 10 has set firmly on slide bar 9, and slide bar 9 keeps away from coil former 6 one end and has set firmly conducting strip 11, install two joints 12 on the lid 5, be provided with elastic component 13 between conducting strip 11 and the mount pad 8, install terminal 15 on the coil former 6, terminal 15 one end stretches into coil former 6 switch-on coil 7, and the other end runs through lid 5. The binding post 15 is connected with a power supply, the two connectors 12 are respectively connected on a circuit, when the power supply is used for electrifying the binding post 15, the coil 7 is electrified to generate a magnetic field, the magnetic field drives the magnet 10 to enable the sliding rod 9 to slide towards the direction of the connectors 12, two ends of the conducting strip 11 are respectively contacted with the two connectors 12, and the two connectors 12 are communicated to enable the circuit to be communicated; when the power supply to the terminal 15 is cut off, the magnetic field disappears, the sliding rod 9 rebounds under the action of the elastic force of the elastic piece 13, and the conducting strip 11 is separated from the connector 12 to break the circuit.

In view of the above-mentioned related technologies, the inventor considers that the existing contactor terminal has poor structural strength and is easy to damage, and once damage occurs, the whole coil frame needs to be replaced, so that the replacement cost is high.

SUMMERY OF THE UTILITY MODEL

In order to reduce the cost of changing the terminal, this application provides a direct current contactor.

The application provides a direct current contactor adopts following technical scheme:

the utility model provides a direct current contactor, includes the casing, the opening is seted up to casing length direction one end, the lid is installed to the opening part, and the coil former has been placed to the casing bottom, around establishing the coil on the coil former, placed the mount pad on the coil former, vertical sliding is provided with the slide bar on the mount pad, set firmly magnet on the slide bar, the slide bar is kept away from coil former one end and has been set firmly the conducting strip, install two joints on the lid, be provided with the elastic component between conducting strip and the mount pad, install joint spare on the coil former, install the terminal on the coil former, the terminal passes through joint spare demountable installation on the coil former, and joint spare is the metalwork, joint spare one end fixed connection coil, in terminal one end stretches into the joint spare, and through joint spare switch-on coil, the other end runs through the lid.

Through adopting above-mentioned technical scheme, joint spare itself is located the inside difficult striking that receives of casing, also is difficult for damaging, through joint spare joint fixed terminal, changes terminal reduce cost through dismantling when the terminal appears damaging.

Optionally, an auxiliary joint is connected to one end of the binding post extending out of the cover body.

Through adopting above-mentioned technical scheme, the setting up of auxiliary joint prolongs the terminal on the one hand and makes things convenient for the wiring, and on the other hand can reduce the damage of terminal to reduce the probability of opening the casing, thereby reduce the probability that inside damage appears in the contactor.

Optionally, a protection plate is covered at the joint of the auxiliary joint and the binding post.

Through adopting above-mentioned technical scheme, the setting of protection shield is to auxiliary joint and terminal.

Optionally, an isolation sleeve is placed in the housing, and the coil former is placed in the isolation sleeve.

Through adopting above-mentioned technical scheme, the setting of isolation sleeve can keep apart coil and casing, reduces the whole probability of being magnetized of casing to reduce the influence of casing by magnetization to magnet.

Optionally, the lid has set firmly the sealing ring towards casing bottom one end circumference, and sealing ring, separation sleeve and lid form airtight cavity, coil former and mount pad all set up in airtight cavity.

Through adopting above-mentioned technical scheme, reduce the probability that inner structure received external influence through sealed environment.

Optionally, a spring is arranged between the magnet and the mounting seat.

Through adopting above-mentioned technical scheme, the setting of spring can increase elasticity, makes the conducting strip break away from more fast after the coil outage.

Optionally, the mounting base is provided with two permanent magnets, and the two permanent magnets are respectively arranged at two ends of the conducting strip in the length direction.

Through adopting above-mentioned technical scheme, can be formed with nearly even magnetic field between two permanent magnets, when connecting with the conducting strip separation, the electric arc that produces between joint and the conducting strip can receive the ampere force parallel with the conducting strip both sides, elongates electric arc through this kind of mode to cool down electric arc, thereby arc extinguishes with higher speed.

Optionally, the joint comprises a fixing portion and a connecting bolt, the fixing portion is fixedly mounted on the cover body and is arranged in a sealing mode with the cover body, and the connecting bolt is connected to the fixing portion through external threads of the cover body.

Through adopting above-mentioned technical scheme, connect the components of a whole that can function independently to set up and can promote the leakproofness on the one hand, on the other hand can make things convenient for the connection and the dismantlement of wire through connecting bolt.

In summary, the present application includes at least one of the following beneficial technical effects:

the clamping piece is positioned in the shell and is not easy to be impacted and damaged, the binding post is clamped and fixed through the clamping piece, and when the binding post is damaged, the cost is reduced by disassembling and replacing the binding post;

the arrangement of the isolation sleeve can isolate the coil from the shell, so that the probability that the whole shell is magnetized is reduced, and the influence of the magnetization of the shell on the magnet is reduced;

a near-uniform magnetic field is formed between the two permanent magnets, when the joint is separated from the conducting strip, the electric arc generated between the joint and the conducting strip is subjected to ampere force parallel to the two sides of the conducting strip, the electric arc is elongated in the mode, and the electric arc is cooled, so that the extinguishing of the electric arc is accelerated;

the split arrangement of the joint can improve the sealing performance on one hand, and on the other hand, the connection and the disassembly of the lead can be facilitated through the connecting bolt.

Drawings

Fig. 1 is a sectional structural view of the related art.

Fig. 2 is an overall configuration diagram of the present embodiment.

Fig. 3 is a schematic sectional view of the clip of the present embodiment.

Fig. 4 is a schematic half-sectional view of the present embodiment.

Description of reference numerals: 1. a housing; 2. an opening; 3. mounting a plate; 4. mounting holes; 5. a cover body; 6. a bobbin; 7. a coil; 8. a mounting seat; 9. a slide bar; 10. a magnet; 11. a conductive sheet; 12. a joint; 122. a fixed part; 123. a connecting bolt; 13. an elastic member; 14. a clamping piece; 15. a binding post; 16. an auxiliary joint; 17. a protection plate; 18. an isolation sleeve; 19. a seal ring; 20. a spring; 21. and a permanent magnet.

Detailed Description

The present application is described in further detail below with reference to figures 2-4.

The embodiment of the application discloses a direct current contactor, refer to fig. 2 and fig. 3, a shell 1 comprising a rotary body, an opening 2 is arranged at one end of the shell 1 in the length direction, a mounting plate 3 is arranged at one end of the shell 1 in the length direction far away from the opening 2 in the circumferential direction, a mounting hole 4 is arranged on the mounting plate 3, the mounting hole 4 is used for fixing and mounting the shell 1, a cover 5 is detachably mounted at the opening 2, a coil rack 6 is placed in the shell 1, a coil 7 is wound on the coil rack 6, a mounting seat 8 is placed on the coil rack 6, a slide rod 9 is vertically arranged on the mounting seat 8 in a sliding manner, a magnet 10 is fixedly arranged on the slide rod 9, a conducting strip 11 is fixedly arranged at one end of the slide rod 9 far away from the coil rack 6, two joints 12 are mounted on the cover 5, an elastic piece 13 is arranged between the conducting strip 11 and the mounting seat 8, the elastic piece 13 is selected as a tension spring, the elastic piece 13 is sleeved on the slide rod 9, the slide rod 11 slides towards the direction far away from the joints 12, a spring 20 is arranged between the magnet 10 and the mounting seat 8, the spring 20 is sleeved on the sliding rod 9, the spring 20 drives the magnet 10 to slide towards the direction away from the joint 12, a clamping piece 14 is arranged on the coil frame 6, a binding post 15 is arranged on the coil frame 6, the binding post 15 is detachably arranged on the coil frame 6 through the clamping piece 14, the clamping piece 14 is a metal piece with a conductive function, preferably a crown spring, one end of the clamping piece 14 is fixedly connected with the coil 7, one end of the binding post 15 extends into the clamping piece 14, the coil 7 is connected through the clamping piece 14, and the other end of the clamping piece penetrates through the cover body 5; joint spare 14 itself is located the inside difficult striking that receives of casing 1, also is difficult for damaging, through 14 joint fixed terminal 15 of joint spare, changes terminal 15 reduce cost through dismantling when terminal 15 appears damaging.

Referring to fig. 3 and 4, an auxiliary joint 16 is connected to one end of the binding post 15 extending out of the cover body 5, and a cable with strong shaping capacity is selected as an auxiliary arrow and is directly connected to the end of the binding post 15 extending out of the cover body 5; the protection plate 17 is detachably arranged on the cover body 5, the protection plate 17 is a plate body made of insulating materials, and the protection plate 17 covers the joint of the auxiliary joint 16 and the wiring terminal 15.

Referring to fig. 3 and 4, the whole of the joint 12 is made of copper, the joint 12 includes a fixing portion 122 fixedly mounted on the cover 5 and a connecting bolt 123 externally screwed on the fixing portion 122 of the cover 5, the fixing portion 122 and the cover 5 are arranged in a sealing manner, the sealing performance of the cover 5 and the housing 1 can be improved by the fixing portion 122 arranged in the sealing manner, the connecting bolt 123 connected in a threaded manner can screw a lead on the fixing portion 122, and the lead can be detached by detaching the connecting bolt 123, so that the lead can be conveniently connected and detached.

Referring to fig. 3 and 4, an isolation sleeve 18 is placed in the housing 1, the coil former 6 is placed in the isolation sleeve 18, and the isolation sleeve 18 is arranged to prevent the housing 1 from directly contacting the energized coil 7, so that the probability that the housing 1 is magnetized is reduced, and the probability that the magnet 10 is influenced by the magnetization of the housing 1 is reduced; lid 5 has set firmly sealing ring 19 towards 1 bottom one end circumference of casing, and sealing ring 19, separation sleeve 18 and lid 5 form airtight cavity, and coil former 6 and mount pad 8 all set up in airtight cavity, all set up coil former 6 and mount pad 8 in airtight cavity, and the sliding of follow-up slide bar 9 is in airtight cavity, is difficult for receiving external influence.

Referring to fig. 3 and 4, the permanent magnets 21 are mounted on the mounting base 8, two permanent magnets 21 are respectively arranged at two ends of the length direction of the conducting strip 11, a near uniform magnetic field can be formed between the two permanent magnets 21, when the connector 12 is separated from the conducting strip 11, electric arcs generated between the connector 12 and the conducting strip 11 can be subjected to ampere force parallel to two sides of the conducting strip 11, the electric arcs are elongated in the mode, and the electric arcs are cooled, so that the extinguishing of the electric arcs is accelerated.

The implementation principle of the embodiment of the application is as follows: putting the isolation sleeve 18 into the shell 1, then putting the coil rack 6 wound with the coil 7 into the shell 1 and putting the isolation sleeve 18, then installing the installation seat 8 provided with the sliding rod 9 and the permanent magnet 21 into the shell 1, and inserting and fixing the binding post 15 on the coil rack 6 to connect the binding post 15 with the coil 7; then, the cover body 5 is installed on the shell 1, the auxiliary connector 16 is connected on the terminal 15, the protection plate 17 is installed on the shell 1 and covers the connection position of the auxiliary connector 16 and the terminal 15, and the assembly of the contactor is completed; in use, the contactor is fixed at a desired position by a fixing member such as a screw, the power supply is connected to the auxiliary connector 16, and the lead of the circuit is fixed to the fixing portion 122 of the connector 12 by a connecting bolt 123.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a direct current contactor, includes casing (1), opening (2) are seted up to casing (1) length direction one end, opening (2) department installs lid (5), and coil former (6) have been placed to casing (1) bottom, coil former (6) are gone up around establishing coil (7), have placed mount pad (8) on coil former (6), vertical sliding is provided with slide bar (9) on mount pad (8), magnet (10) have set firmly on slide bar (9), and slide bar (9) are kept away from coil former (6) one end and have set firmly conducting strip (11), install two joints (12) on lid (5), be provided with between conducting strip (11) and mount pad (8) elastic component (13), its characterized in that: install joint spare (14) on coil former (6), install terminal (15) on coil former (6), terminal (15) are through joint spare (14) demountable installation on coil former (6), and joint spare (14) are the metalwork, joint spare (14) one end fixed connection coil (7), in terminal (15) one end stretches into joint spare (14), and through joint spare (14) switch-on coil (7), the other end runs through lid (5).

2. A dc contactor as claimed in claim 1, wherein: and one end of the binding post (15) extending out of the cover body (5) is connected with an auxiliary joint (16).

3. A dc contactor according to claim 2, wherein: and a protective plate (17) is covered at the joint of the auxiliary joint (16) and the binding post (15).

4. A dc contactor as claimed in claim 1, wherein: an isolation sleeve (18) is placed in the shell (1), and the coil rack (6) is placed in the isolation sleeve (18).

5. A DC contactor according to claim 4, characterized in that: lid (5) have set firmly sealing ring (19) towards casing (1) bottom one end circumference, and sealing ring (19), spacer sleeve (18) and lid (5) form airtight cavity, coil former (6) and mount pad (8) all set up in airtight cavity.

6. A dc contactor according to claim 1, wherein: and a spring (20) is arranged between the magnet (10) and the mounting seat (8).

7. A dc contactor as claimed in claim 1, wherein: the mounting base (8) is provided with two permanent magnets (21), and the two permanent magnets (21) are respectively arranged at two ends of the conducting strip (11) in the length direction.

8. A dc contactor as claimed in claim 1, wherein: the connector (12) comprises a fixing portion (122) and a connecting bolt (123), the fixing portion (122) is fixedly mounted on the cover body (5) and is hermetically arranged with the cover body (5), and the connecting bolt (123) is connected to the fixing portion (122) through external threads on the cover body (5).