CN219329223U - High-voltage direct-current relay - Google Patents

Abstract

The utility model discloses a high-voltage direct-current relay which comprises an insulating shell, a contact mechanism and a driving mechanism. The insulating housing has a contact chamber. The contact mechanism comprises a pair of static contact pieces and a movable contact piece. The static contact piece set up in on the insulating casing, the one end of static contact stretches into in the contact chamber, the other end of static contact piece protrusion in the insulating casing, the movable contact piece is located in the contact chamber, the static contact piece with have the clearance between the movable contact piece. The driving mechanism comprises a driving source and a pushing assembly, the driving source is arranged on the outer side of the insulating shell, the pushing assembly is arranged in the contact cavity, and the pushing assembly is used for fixing the movable contact. By the arrangement, the power consumption of the high-voltage direct-current relay is reduced.

Description

High-voltage direct-current relay

Technical Field

The utility model relates to the field of relays, in particular to a high-voltage direct-current relay.

Background

The high-voltage direct-current relay is a high-voltage direct-current control device and is applied to electric vehicles and electric power energy storage systems, wherein the electric vehicles are used in commercial vehicles, passenger vehicles and charging piles. The high-voltage direct-current relay with the traditional structure mainly controls the conduction of a main contact in the relay by generating a magnetic field when the coil is electrified. When the coil driving type high-voltage direct current relay works, the outside needs to supply power to the coil all the time, and when the coil works, the coil consumes current all the time and generates heat, so that the energy conservation of a power system is not facilitated. Meanwhile, the larger the current is, the more turns of the coil are, so that the coil occupies more volume of the direct current relay, the heavier the weight of the whole direct current relay is, and the design of miniaturization and light weight of the high-voltage direct current relay is not facilitated.

Therefore, it is necessary to provide a new high voltage dc relay to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a high-voltage direct-current relay, which is used for reducing the consumption of power by a driving mechanism of the relay.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses an electric connector, comprising:

an insulating housing having a contact chamber;

the contact mechanism comprises a movable contact and a pair of static contacts, the static contacts are arranged on the insulating shell, one end of each static contact stretches into the corresponding contact cavity, the movable contact is positioned in the corresponding contact cavity, and a gap is reserved between the static contact and the movable contact;

the driving mechanism comprises a driving source and a pushing assembly, the driving source is arranged on the outer side of the insulating shell, the pushing assembly is arranged in the contact cavity, and the pushing assembly is used for fixing and pushing the movable contact to move in the contact cavity;

when the driving source is subjected to forward voltage, the driving source drives the pushing assembly to move towards the static contact, and the movable contact is contacted with the static contact; when the driving source is reversely electrified, the driving source drives the pushing component to move in a direction away from the static contact, and the movable contact is not contacted with the static contact.

As a further improvement of the utility model, the pushing assembly comprises an insulating piece and an elastic piece, wherein the insulating piece is connected with the driving end of the driving source, one end of the elastic piece is connected with the insulating piece, and the other end of the elastic piece is connected with the bottom of the movable contact piece.

As a further improvement of the present utility model, the pushing assembly further includes a fixing support for fixing the movable contact, the fixing support includes two first fixing portions and a second fixing portion, one ends of the two first fixing portions are respectively disposed on opposite sides of the second fixing portion, one end of the first fixing portion, which is far away from the second fixing portion, is fixedly connected with the insulating member, and the second fixing portion is in contact with the top of the movable contact.

As a further improvement scheme of the utility model, the pushing assembly further comprises a supporting piece, the supporting piece is fixedly arranged at the bottom of the movable contact piece and extends to the side part of the movable contact piece, the supporting top of the supporting piece is provided with a buckling part, and the fixing support is provided with a buckling groove matched with the buckling part.

As a further improvement of the utility model, the supporting member comprises a first supporting arm and a second supporting arm, an accommodating space is formed among the first supporting arm, the second supporting arm and the bottom of the movable contact member, and the elastic member is clamped in the accommodating space.

As a further improvement of the utility model, the driving mechanism further comprises a transmission assembly, the transmission assembly is arranged between the driving source and the insulating piece, the transmission assembly comprises a linkage shaft and a transmission shaft, one end of the linkage piece is connected with the driving source, the other end of the linkage shaft is connected with one end of the transmission shaft, and the other end of the transmission shaft is in threaded connection with the insulating piece.

As a further improvement of the utility model, the high-voltage direct current relay further comprises an arc extinguishing mechanism, and the arc extinguishing mechanism is arranged on the periphery of the insulating shell in a surrounding mode.

As a further improvement scheme of the utility model, the arc extinguishing mechanism comprises two oppositely arranged magnetic steels and a magnetic conduction plate, wherein the magnetic conduction plate is arranged on the periphery of the side wall of the insulating shell in a surrounding mode, a gap is formed between the magnetic conduction plate and the side wall of the insulating shell, and the magnetic steels are arranged in the gap.

As a further improvement scheme of the utility model, the high-voltage direct current relay further comprises a fixed seat, the insulating shell, the magnetic steel and the magnetic conduction plate are all arranged on the fixed seat, and the driving end of the driving source penetrates through the fixed seat to be connected with the insulating piece.

As a further development of the utility model, the inlet end of the drive source has a connection terminal which is configured to be electrically connected to a circuit board.

As a further improvement of the present utility model, the high-voltage dc relay further includes a housing, the insulating housing, the contact mechanism, and the driving mechanism are disposed in the housing, the housing is provided with a socket connector, and the driving source is electrically connected with the socket connector.

Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a high-voltage direct-current relay which comprises an insulating shell, a contact mechanism and a driving mechanism. When forward voltage is applied to the driving source, the driving source drives the pushing assembly to drive the movable contact to move towards the static contact, and the movable contact is contacted with the static contact; when the driving source is reversely electrified, the driving source drives the pushing component to drive the movable contact to move in a direction away from the static contact, and the movable contact is not contacted with the static contact. Therefore, the consumption of the high-voltage direct-current relay to the electric power is reduced, and the energy is saved.

Drawings

FIG. 1 is a schematic perspective view of a HVDC relay of the present utility model in one embodiment;

FIG. 2 is a schematic perspective view of another angle of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

FIG. 4 is a partially exploded perspective view of FIG. 1;

fig. 5 is a partially exploded perspective view of the insulating housing, contact mechanism, drive mechanism, arc extinguishing mechanism, anchor mount and connecting ring of fig. 4;

FIG. 6 is a partially exploded perspective view of the dielectric housing, drive mechanism, mounting bracket and connector of FIG. 4;

FIG. 7 is a schematic perspective view of the drive mechanism and movable contact of FIG. 4;

FIG. 8 is a schematic perspective view of another angle of FIG. 7;

FIG. 9 is an exploded perspective view of the drive mechanism of FIG. 8;

FIG. 10 is an exploded perspective view of the push assembly of FIG. 8;

FIG. 11 is an exploded perspective view of the stationary bracket and support of FIG. 10;

fig. 12 is a schematic perspective view of a dc-to-dc relay of the present utility model in another embodiment;

fig. 13 is an exploded perspective view of fig. 12.

Detailed Description

Exemplary embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, the same numbers in different drawings denote the same or similar elements, unless otherwise specified. What is described in the following exemplary embodiments does not represent all embodiments consistent with the utility model; rather, they are merely examples of apparatus, articles, and/or methods that are consistent with aspects of the utility model as set forth in the claims.

The terminology used in the present utility model is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present utility model. As used in the specification and claims of the present utility model, the singular forms "a," "an," or "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that words such as "first," "second," and the like, used in the description and in the claims of the present utility model, do not denote any order, quantity, or importance, but rather are names used to distinguish one feature from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "rear," "upper," "lower," and the like are used herein for convenience of description and are not limited to a particular location or to a spatial orientation. The word "comprising" or "comprises", and the like, is an open-ended expression, meaning that elements appearing before "comprising" or "including", encompass the elements appearing after "comprising" or "including", and equivalents thereof, and not exclude that elements appearing before "comprising" or "including", may also include other elements. In the present utility model, if a plurality of the above-mentioned components are present, the meaning of the above-mentioned components is two or more.

Referring to fig. 1 to 13, the present utility model discloses a high voltage dc relay 100, wherein the high voltage dc relay 100 includes an insulating housing 1, a contact mechanism 2 and a driving mechanism 3.

Referring to fig. 3 to 6, the insulating housing 1 has a contact chamber 101, and the insulating housing 1 includes a top wall 11 and a side wall 12 vertically disposed from an edge of the top wall 11. The side wall 12 includes a first side wall 121, a second side wall 122, a third side wall 123 and a fourth side wall 124, where the first side wall 121, the second side wall 122, the third side wall 123 and the fourth side wall 124 are connected end to end in sequence. Preferably, the first side wall 121, the second side wall 122, the third side wall 123, and the fourth side wall 124 are connected end to end in sequence to form a cuboid. The first side wall 121, the second side wall 122, the third side wall 123, the fourth side wall 124, and the top wall 11 enclose the contact chamber 101. In the embodiment of the present application, the insulating housing 1 is made of ceramic. The ceramic itself has the characteristics of high temperature resistance, corrosion resistance, no deformation, strong electrical insulation and the like, so that the high-voltage direct-current relay 100 can be suitable for various working condition environments.

Referring to fig. 3 to 8, the contact mechanism 2 includes a movable contact 22 and a pair of stationary contacts 21. The pair of static contacts 21 is arranged on the insulating housing 1, the movable contact 22 is arranged in the contact chamber 101, a gap is formed between the static contacts 21 and the movable contact 22, and the pair of static contacts 21 and the movable contact 22 are arranged at intervals up and down along the height direction B-B of the insulating housing 1. The same ends of the pair of stationary contacts 21 extend into the contact chamber 101. Specifically, the pair of static contacts 21 are disposed on the top wall 11, and the pair of static contacts 21 are disposed at intervals along a length direction A-A of the insulating housing 1, where the length direction A-A is perpendicular to the height direction B-B. The other ends of the pair of stationary contacts 21 protrude from the top wall 11. The top wall 11 has two through holes, the positions of the two through holes and the positions of the pair of static contacts 21 are corresponding to each other along the height direction B-B of the insulating housing 1, and the other ends of the pair of static contacts 21 protrude out of the insulating housing 1 through the two through holes.

In the embodiment of the present application, the movable contact 22 is elongated, the movable contact 22 is disposed to extend along the length direction A-A, and the movable contact 22 has a top 221, a bottom 222 disposed opposite to the top 221, and a side 223 connected between the top 221 and the bottom 222. The top 221 is disposed toward one side of the pair of static contacts 21, the bottom 222 is disposed toward one side of the driving mechanism 3, a gap is provided between the top 221 and the static contacts 21, and the top 221 is in contact with or not in contact with the static contacts 21.

Referring to fig. 3 to 8, the driving mechanism 3 includes a driving source 31 and a pushing assembly 32. The driving source 31 is disposed at the outer side of the insulating housing 1, the pushing component 32 is disposed in the contact chamber 101, and the pushing component 32 is used for fixing and pushing the movable contact 22 to reciprocate in the height direction B-B in the contact chamber 101.

Referring to fig. 9 to 10, the pushing assembly 32 includes an insulating member 321 and an elastic member 322. The insulating member 321 is connected with the driving end of the driving source 31, one end of the insulating member 321 along the height direction B-B is connected with the driving end of the driving source 31, and the other end of the insulating member 321 along the height direction B-B is connected with one end of the elastic member 322. The other end of the elastic member 322 is connected to the bottom 222 of the movable contact 22 along the height direction B-B. The insulating member 321 is provided with the groove portion 3211 on a side facing the elastic member 322, and a fixing post 3212 is further provided in the groove portion 3211. One end of the elastic member 322 passes through the fixing post 3212 and is fixed in the groove portion 3211, so that the elastic member 322 is not easily separated from the insulating member 321. In the embodiment of the present application, the elastic member 322 is a spring.

Referring to fig. 9 to 10, the pushing assembly 32 further includes a fixing bracket 323 for fixing the movable contact 22, and the fixing bracket 323 includes two first fixing portions 3231 and a second fixing portion 3232. One ends of the two first fixing portions 3231 are respectively disposed on opposite sides of the second fixing portion 3232, one end of the first fixing portion 3231 away from the second fixing portion 3232 is fixedly connected with the insulating member 321, and the second fixing portion 3232 is in contact with the top 221 of the movable contact 22. Specifically, the two first fixing portions 3231 are disposed on opposite sides of the second fixing portion 3232 along the width direction C-C, respectively. The width direction C-C, the height direction B-B and the length direction A-A are perpendicular to each other. The two first fixing portions 3231 are connected with the second fixing portion 3232 to form a U-shaped frame, and the movable contact 22 is disposed in the U-shaped frame. A reinforcing plate 3213 is further disposed in the insulating member 321, and the reinforcing plate 3213 is disposed near the driving source 31. The reinforcing plate 3213 protrudes from the insulating member 321 in the width direction C-C. One ends of the two first fixing portions 3231, far away from the second fixing portions 3232, are respectively connected to the reinforcing plate 3213, so that the fixing support 323 and the insulating member 321 can be fixed, and the moving contact 22 is prevented from moving in the fixing support 323, which results in poor contact between the moving contact 22 and the two static contacts 21, and affects the normal operation of the high-voltage dc relay 100.

Referring to fig. 9 to 11, the pushing assembly 32 further includes a support member 324, the support member 324 is fixedly disposed at the bottom 222 of the movable contact 22 and extends to the side 223 of the movable contact 22, the support top of the support member 324 is provided with a fastening portion 3241, the fixing bracket 323 is provided with a fastening slot 3233 that is matched with the fastening portion 3241, the fastening slot 3233 is disposed between the first fixing portion 3231 and the second fixing portion 3232, and the fastening portion 3241 passes through the fastening slot 3233 along the height direction B-B at the side 223 of the movable contact 22 and is fixed, so that the support member 324 can be matched and fixed with the fixing bracket 323, and the fixing stability of the movable contact 22 in the fixing bracket 323 is further enhanced.

The support member 324 includes a first support arm 3242 and a second support arm 3243, an accommodating space is formed between the first support arm 3242, the second support arm 3243 and the bottom 222 of the movable contact 22, and the elastic member 322 is disposed in the accommodating space. The first support arm 3242 is identical in structure to the second support arm 3243. Specifically, the first support arm 3242 includes a first support portion 32421 and first bending portions 32422 disposed at two ends of the first support portion 32421, the two first bending portions 32422 extend to one side of the movable contact 22 along the height direction B-B, and the two first bending portions 32422 are perpendicular to the first support portion 32421, respectively. The first supporting portion 32421 has a first fixing hole 32423, the bottom 222 of the movable contact 22 has a first positioning column 2221, the first positioning column 2221 and the first fixing hole 32423 are disposed vertically along the height direction B-B, and the first fixing hole 32423 is sleeved on the first positioning column 2221, so that the first supporting portion 32421 and the bottom 222 of the movable contact 22 are fixed in a matching manner. The second support arm 3243 includes a second support portion 32431 and second bending portions 32432 disposed at two ends of the second support portion 32431, the two second bending portions 32432 extend to one side of the movable contact 22 along the height direction B-B, and the two second bending portions 32432 are perpendicular to the second support portion 32431, respectively. The second supporting portion 32431 has a second fixing hole 32433, the bottom 222 of the movable contact 22 has a second positioning column 2222, the first positioning column 2221 and the second positioning column 2222 are symmetrically arranged along the center of the movable contact 22, and the first positioning column 2221 and the second positioning column 2222 are arranged at intervals along the length direction A-A. The second positioning column 2222 and the second fixing hole 32433 are vertically disposed along the height direction B-B, and the second fixing hole 32433 is sleeved on the second positioning column 2222 so that the second supporting portion 32431 and the bottom 222 of the movable contact 22 are fixed in a matched manner. The first bending portion 32422 and the second bending portion 32432, which are located on the same side, are provided with the fastening portion 3241. The first support portion 32421, the second support portion 32431, and the bottom portion 222 of the movable contact 22 form a receiving space therebetween, and the elastic member 322 is disposed in the receiving space in a clamped manner, so as to prevent the movable contact 22 from moving in the fixed bracket 323, which may result in poor contact between the movable contact 22 and the two stationary contacts 21, and affect the normal operation of the high-voltage dc relay 100.

Referring to fig. 3 to 6, the driving mechanism 3 further includes a transmission assembly 33, and the transmission assembly 33 is disposed between the driving source 31 and the insulating member 321. The transmission assembly 33 includes a linkage shaft 331 and a transmission shaft 332, one end of the linkage shaft 331 is connected with the driving source 31, the other end of the linkage shaft 331 is connected with one end of the transmission shaft 332, and the other end of the transmission shaft 332 is in threaded connection with the insulating member 321. The driving end of the driving source 31 is locked with the linkage shaft 331 through threads, so that the driving source 31 is reliably connected with the linkage shaft 331, and is not affected by mechanical impact such as vibration, and the instant arcing between the movable contact 22 and the static contact 21 is avoided, and the use reliability of the high-voltage direct-current relay 100 is affected.

Referring to fig. 3 to 5, the high-voltage dc relay 100 further includes an arc extinguishing mechanism 4, and the arc extinguishing mechanism 4 is disposed around the outer periphery of the insulating housing 1. The arc extinguishing mechanism 4 comprises two oppositely arranged magnetic steels and a magnetic conduction plate 42. The magnetic conductive plate 42 is disposed around the outer periphery of the side wall 12 of the insulating housing 1, a gap is formed between the magnetic conductive plate 42 and the side wall 12 of the insulating housing 1, two magnetic steels are disposed in the gap, and the magnetic conductive plate 42 can form a stable magnetic field around the contact point of the movable contact 22 and the contact 21. Specifically, the magnetic steel includes a first magnetic steel 411 and a second magnetic steel 412, the first magnetic steel 411 is disposed between the first side wall 121 and the magnetic conductive plate 42, and the second magnetic steel 412 is disposed between the third side wall 123 and the magnetic conductive plate 42. Specifically, the polarities of the surfaces of the first magnetic steel 411 and the second magnetic steel 412 facing each other are opposite. That is, the wall surface of the first magnetic steel 411 facing the first side wall 121 is an S pole, and the wall surface of the first magnetic steel 411 facing away from the first side wall 121 is an N pole; the wall surface of the second magnetic steel 412 facing the third side wall 123 is an N pole, and the wall surface of the second magnetic steel 412 facing away from the third side wall 123 is an S pole. The magnetic field can be generated between the first magnetic steel 411 and the second magnetic steel 412, so that the electric arc can be elongated, and then can be extinguished, and the high-voltage relay 100 can be ensured to work in a safe environment.

Referring to fig. 6, the high-voltage dc relay 100 further includes a fixing base 5, the insulating housing 1 and the arc extinguishing mechanism 4 are disposed above the fixing base 5, and the driving mechanism 3 is disposed below the fixing base 5. The fixed seat 5 is provided with a positioning hole 51, and the driving end of the driving mechanism 3 passes through the positioning hole 51 to be connected with the movable contact 22. Preferably, the projected area of the insulating housing 1 in the height direction B-B is smaller than the projected area of the fixing base 5.

Referring to fig. 6, the hvth relay 100 further includes a connection ring 6, the connection ring 6 is disposed between the fixing base 5 and the insulating housing 1, and the connection ring 6 is disposed around an edge of the fixing base 5. The connection ring 6 has a ring shape, and the connection ring 6 has a ring-shaped portion 61, and the ring-shaped portion 61 is disposed toward the side wall 12 of the insulating housing 1 in the height direction B-B. The annular portion 61 is connected to the side wall 12 of the insulating housing 1. The annular portion 61 is sized to conform to the cross-sectional size of the sidewall 12. A gasket 62 is further disposed between the annular portion 61 and the side wall 12, so that the annular portion 61 and the side wall 12 can be sealed, and an arc is prevented from overflowing, which affects the safety of the high-voltage dc relay 100.

The high voltage dc relay 100 further comprises a housing 7. Preferably, the housing 7 is made of plastic, and the plastic can play an insulating role. The insulating housing 1, the contact mechanism 2, and the driving mechanism 3 are provided in the case 7. The housing 7 includes a first housing 72 and a second housing 73. The first housing 72 and the second housing 73 are disposed up and down in the height direction B-B. The first housing 72 and the second housing 73 are closed up and down to form a housing chamber for housing the insulating housing 1, the contact mechanism 2, and the driving mechanism 3. The first top wall 721 of the first housing 72 has two first through holes 722. The first through holes 722 are disposed vertically corresponding to the stationary contact 21 along the height direction. The stationary contact 21 at least partially exposes the first through hole 722. The first bottom wall 731 of the second housing 73 has a second through hole, which is disposed vertically corresponding to the driving source 31 along the height direction B-B, and at least a portion of the wire inlet end of the driving source 31 is exposed out of the second through hole.

Referring to fig. 1 to 2, in the first embodiment, the incoming end of the driving source 31 has a connection terminal 311, the connection terminal 311 is disposed at the bottom of the driving source 31, and the high-voltage dc relay 100 can be electrically connected to the circuit board through the connection terminal 311.

Referring to fig. 12 to 13, in the second embodiment, the housing 7 is provided with a socket connector 71, and the driving source 31 is electrically connected to the socket connector 71. Preferably, the socket connector 71 is disposed on the second housing 73, and the driving source 31 and the socket connector 71 are electrically connected through the connection terminal 311 or a wire, so that the usage scenario of the high-voltage dc relay 100 can be enriched.

When the driving source 31 is positively energized, the driving source 31 drives the pushing assembly 32 to move toward the stationary contact 21, and the movable contact 22 is in contact with the stationary contact 21. Specifically, when the driving source 31 is positively energized, the driving end of the driving source 31 drives the insulating member 321 to move upwards along the height direction B-B via the coupling shaft 331 and the driving shaft 332. At this time, the insulating member 321 pushes the movable contact 22 to move upward through the elastic member 322, the top 221 of the movable contact 22 is closed with the two stationary contacts 21, and the high-voltage dc relay 100 is turned on.

When the driving source 31 is reversely energized, the driving source 31 drives the pushing assembly 32 to move away from the static contact 21, and the movable contact 22 is not in contact with the static contact 21. Specifically, when the driving source 31 is reversely energized, the driving end of the driving source 31 drives the insulating member 321 to move downward along the height direction B-B via the coupling shaft 331 and the driving shaft 332. At this time, the insulating member 321 drives the movable contact member 22 to move downward through the elastic member 322, the top 221 of the movable contact member 22 is not in contact with the two stationary contact members 21, and the circuit of the high-voltage dc relay 100 is disconnected.

When the driving source 31 drives the movable contact 22 and the two stationary contacts 21 to be closed, the driving source 31 consumes external low-voltage power, and when the movable contact 22 and the two stationary contacts 21 are closed, the driving source 31 does not need to continuously supply the low-voltage power to maintain the on operation of the high-voltage direct-current relay 100, and at this time, the high-voltage direct-current relay 100 can be driven to achieve zero power consumption.

In addition, in the illustrated embodiment of the present application, the driving source 31 is a motor, and the volume of the motor can be made small, so that the space of the high-voltage dc relay 100 is saved, the volume is reduced, and the weight is reduced. The size of the high-voltage direct-current relay 100 can be reduced at the same time, and the high-voltage direct-current relay is convenient to install, miniaturized and light-weight.

Because the driving source 31 is a motor, the motor has high driving speed and high speed. The time for the driving source 31 to push the movable contact 22 into or out of contact with the two stationary contacts 21 is greatly shortened. The occurrence of the problem of undesirable parameters such as simultaneous snap-back is avoided, thereby greatly improving the performance of the high voltage dc relay 100.

To sum up: the utility model discloses a high-voltage direct-current relay 100, wherein the high-voltage direct-current relay 100 comprises an insulating shell 1, a contact mechanism 2 and a driving mechanism 3. When the driving source 31 is positively energized, the driving source 31 drives the pushing assembly 32 to drive the movable contact 22 to move toward the stationary contact 21, and the movable contact 22 contacts the stationary contact 21; when the driving source 31 is reversely energized, the driving source 31 drives the pushing assembly 32 to drive the movable contact 22 to move away from the stationary contact 21, and the movable contact 22 is not in contact with the stationary contact 21. Thereby reducing the power consumption of the high-voltage direct-current relay 100 and saving energy. The weight of the high-voltage direct-current relay 100 is reduced, and the design requirements of miniaturization and light weight are facilitated.

The above embodiments are only for illustrating the technical solutions described in the present utility model and should not be construed as limiting the present utility model, and the present utility model should be understood based on the description of the directivity of the present utility model such as "front", "rear", "left", "right", "upper", "lower", etc., and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present utility model can be modified or substituted by those skilled in the art without departing from the spirit and scope of the present utility model and all the modifications thereof should be covered in the scope of the claims of the present utility model.

Claims (11)

1. A high voltage dc relay comprising:

an insulating housing (1) having a contact chamber (101);

the contact mechanism (2) comprises a movable contact piece (22) and a pair of fixed contact pieces (21), wherein the fixed contact pieces (21) are arranged on the insulating shell (1), one ends of the fixed contact pieces (21) extend into the contact cavity (101), the movable contact pieces (22) are positioned in the contact cavity (101), and a gap is reserved between the fixed contact pieces (21) and the movable contact pieces (22);

the driving mechanism (3) comprises a driving source (31) and a pushing assembly (32), wherein the driving source (31) is arranged on the outer side of the insulating shell (1), the pushing assembly (32) is arranged in the contact chamber (101), and the pushing assembly (32) is used for fixing and pushing the movable contact piece (22) to move in the contact chamber (101);

when forward voltage is applied to the driving source (31), the driving source (31) drives the pushing assembly (32) to move towards the static contact (21), and the movable contact (22) is in contact with the static contact (21);

when the driving source (31) is reversely pressed, the driving source (31) drives the pushing component (32) to move away from the static contact piece (21), and the movable contact piece (22) is not contacted with the static contact piece (21).

2. The high voltage dc relay of claim 1, wherein: the pushing assembly (32) comprises an insulating piece (321) and an elastic piece (322), the insulating piece (321) is connected with the driving end of the driving source (31), one end of the elastic piece (322) is connected with the insulating piece (321), and the other end of the elastic piece (322) is connected with the bottom (222) of the movable contact piece (22).

3. The high voltage dc relay of claim 2, wherein: the pushing assembly (32) further comprises a fixing support (323) used for fixing the movable contact piece (22), the fixing support (323) comprises two first fixing portions (3231) and two second fixing portions (3232), one ends of the two first fixing portions (3231) are respectively arranged on opposite sides of the second fixing portions (3232), one end, far away from the second fixing portions (3232), of the first fixing portions (3231) is fixedly connected with the insulating piece (321), and the second fixing portions (3232) are in contact with the top (221) of the movable contact piece (22).

4. A high voltage dc relay according to claim 3, wherein: the pushing assembly (32) further comprises a supporting piece (324), the supporting piece (324) is fixedly arranged at the bottom (222) of the movable contact piece (22) and extends to the side portion (223) of the movable contact piece (22), a buckling part (3241) is arranged at the supporting top of the supporting piece (324), and a buckling groove (3233) matched with the buckling part (3241) is formed in the fixing support (323).

5. The high voltage dc relay of claim 4, wherein: the support piece (324) comprises a first support arm (3242) and a second support arm (3243), an accommodating space is formed between the first support arm (3242), the second support arm (3243) and the bottom (222) of the movable contact piece (22), and the elastic piece (322) is clamped in the accommodating space.

6. The high voltage dc relay of claim 2, wherein: the driving mechanism (3) further comprises a transmission assembly (33), the transmission assembly (33) is arranged between the driving source (31) and the insulating piece (321), the transmission assembly (33) comprises a linkage shaft (331) and a transmission shaft (332), one end of the linkage shaft (331) is connected with the driving source (31), the other end of the linkage shaft (331) is connected with one end of the transmission shaft (332), and the other end of the transmission shaft (332) is in threaded connection with the insulating piece (321).

7. The high voltage dc relay of claim 2, wherein: the high-voltage direct current relay further comprises an arc extinguishing mechanism (4), and the arc extinguishing mechanism (4) is arranged on the periphery of the insulating shell (1) in a surrounding mode.

8. The high voltage dc relay of claim 7, wherein: the arc extinguishing mechanism (4) comprises two oppositely arranged magnetic steels and a magnetic conduction plate (42), the magnetic conduction plate (42) is annularly arranged on the periphery of the side wall (12) of the insulating shell (1), a gap is formed between the magnetic conduction plate (42) and the side wall (12) of the insulating shell (1), and the magnetic steels are arranged in the gap.

9. The high voltage dc relay of claim 8, wherein: the high-voltage direct-current relay further comprises a fixing seat (5), wherein the insulating shell (1), the magnetic steel and the magnetic conduction plate (42) are arranged on the fixing seat (5), and the driving end of the driving source (31) penetrates through the fixing seat (5) to be connected with the insulating piece (321).

10. The high voltage dc relay of claim 1, wherein: the inlet wire end of the driving source (31) is provided with a connecting terminal (311), and the connecting terminal (311) is configured to be electrically connected with the circuit board.

11. The high voltage dc relay of claim 1, wherein: the high-voltage direct-current relay further comprises a shell (7), wherein the insulating shell (1), the contact mechanism (2) and the driving mechanism (3) are arranged in the shell (7), the shell (7) is provided with a socket connector (71), and the driving source (31) is electrically connected with the socket connector (71).

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