CN115954233A - High-voltage direct-current relay with auxiliary contacts - Google Patents

Abstract

The invention discloses a high-voltage direct-current relay with an auxiliary contact, which comprises an inner support cover, a main contact, an auxiliary contact and a pushing rod component, wherein the main contact comprises a moving contact and two static contacts matched with the moving contact; and the inner support cover and the push rod part are matched with a limiting structure for limiting the deflection of the push rod part. The push rod component does not deflect to one side in the product suction process, so that the auxiliary conductive piece is prevented from interfering with the part of the inner support cover for fixing the auxiliary leading-out end, the smooth action of a product is ensured, and the auxiliary conductive piece is prevented from interfering with the inner support cover and being broken when the product is subjected to a mechanical life test.

Description

High-voltage direct-current relay with auxiliary contacts

Technical Field

The invention relates to a relay, in particular to a high-voltage direct-current relay with an auxiliary contact.

Background

The relay is an electronic control device, it is usually used in automatic control circuit, it is an "automatic switch" which uses small current to control large current, so it plays the role of automatic regulation, safety protection, switching circuit, etc.

The high-voltage direct-current relay is one of relays, a traditional high-voltage direct-current relay generally only has a main contact, when a coil assembly works, a movable iron core acts, a movable contact of the main contact is driven to move through a push rod component, two ends of the movable contact are in contact with two fixed contacts of the main contact, and a load loop is communicated. In order to monitor the connection condition of the static contact, some high-voltage direct-current relays further comprise auxiliary contacts, the auxiliary contacts comprise auxiliary conductive pieces and two auxiliary leading-out ends, the auxiliary conductive pieces are fixed with the push rod part, and the auxiliary conductive pieces move upwards along with the upward movement of the push rod part until the auxiliary conductive pieces contact the two auxiliary leading-out ends to output monitoring signals. However, the high-voltage direct-current relay with the auxiliary contacts has the following disadvantages: the push rod component is deflected to one side under the action of a counter-force spring in the product attracting process, so that the auxiliary conductive piece and the part of the fixed auxiliary leading-out end of the inner support cover are interfered, smooth action of the product is not facilitated, and the auxiliary conductive piece is broken even when the product is subjected to a mechanical life test.

Disclosure of Invention

The invention provides a high-voltage direct-current relay with an auxiliary contact, aiming at the technical problems in the prior art, and the high-voltage direct-current relay can avoid the deflection of a push rod part.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-voltage direct-current relay with auxiliary contacts comprises an inner support cover, main contacts, auxiliary contacts and a pushing rod component, wherein the main contacts comprise moving contacts and two static contacts, and the moving contacts at the two ends of the moving contacts are respectively matched with the static contacts at the end parts of the two static contacts correspondingly; the auxiliary contact comprises an auxiliary conductive piece and two auxiliary leading-out ends matched with the two ends of the auxiliary conductive piece, the static contact and the auxiliary leading-out ends are respectively arranged at the top of the inner support cover in a penetrating way, and the moving contact and the auxiliary conductive piece are respectively arranged on the push rod part and are positioned in the inner support cover; and the inner support cover and the push rod part are matched with a limiting structure for limiting the deflection of the push rod part.

Further, the limiting structure comprises a convex part and a groove, the convex part is arranged on the pushing rod component, the groove is arranged on the inner support cover, or the convex part is arranged on the inner support cover, and the groove is arranged on the pushing rod component; the protrusion is located in the groove.

Furthermore, the convex part and the groove are in clearance fit, and when the push rod part deflects around the axis of the push rod part, the convex part and the groove are in contact fit.

Further, when the push rod part deflects, the convex part and the groove are in line-surface contact fit.

Furthermore, the groove is communicated up and down, and the cross section of the groove is in a U shape, a reverse U shape, a V shape or a trapezoid or arc shape with an opening at the lower bottom; the cross section of the convex part is square, or at least the end part of the convex part is in an outward convex arc shape, or is in a trapezoid shape, or is in a triangle shape, or is in a square shape with round corners, the upper bottom surface of the trapezoid faces the groove, and one vertex angle of the triangle faces the groove.

Furthermore, the groove is formed by the interval between two convex ribs arranged at the position of the groove.

Furthermore, the width of the cross section of the convex rib is gradually increased from outside to inside along the depth direction of the groove.

Further, the inside main contact chamber and the auxiliary contact chamber that separate each other that are equipped with of interior support cover, the moving contact is located the main contact intracavity, supplementary electrically conductive piece is located the auxiliary contact intracavity, partition wall between main contact chamber and the auxiliary contact chamber is equipped with the breach of stepping down, promote the lever unit setting the part of moving contact and setting set up between the part of supplementary electrically conductive piece set up with the portion of stepping down the portion of breach adaptation, the portion of stepping down wears to locate the breach of stepping down, just the both ends of the portion of stepping down respectively to the direction extension in main contact chamber and auxiliary contact chamber.

Furthermore, the branch connecting part and the limiting structure are positioned on two sides of the moving contact in the width direction, and the arrangement direction of the branch connecting part and the limiting structure is positioned in the width direction of the moving contact; the horizontal distance between the center point of the branch connecting part and the center point of the movable contact in the width direction of the movable contact is larger than the horizontal distance between the center point of the branch connecting part and the center point of the auxiliary conductive piece in the width direction of the movable contact.

Furthermore, the push rod component comprises a spring seat, a push rod and a support, the upper end of the push rod is fixed on the spring seat, the support is arranged on the spring seat, the moving contact is arranged in the support in a vertically movable manner, and a contact spring is matched between the moving contact and the spring seat; the auxiliary conductive piece is arranged on the spring seat and is positioned beside the bracket; the convex part or the groove is arranged on the side surface of the spring seat, which is back to the auxiliary conductive part.

Compared with the prior art, the invention has the following beneficial effects:

1. the limiting structures are matched between the inner support cover and the push rod part, so that the push rod part cannot deflect to one side in the product suction process, the auxiliary conductive piece is prevented from interfering with the part of the inner support cover for fixing the auxiliary leading-out end, the smooth action of the product is ensured, and the auxiliary conductive piece is prevented from being fractured when the product is subjected to a mechanical life test due to the interference to the inner support cover.

2. The limiting structure comprises the convex part and the groove, so that the invention realizes deflection limiting on the push rod part in a limited space inside the inner support cover by a simple structure.

3. The convex part and the groove are in clearance fit, and only when the push rod part deflects around the axis of the push rod part, the convex part and the groove are in contact fit, so that the push rod part can be ensured not to interfere with the inner support cover in the assembling process, and the action is smoother in a non-deflection state. In particular, the convex part and the groove are in line-surface contact fit, so that the contact friction force between the convex part and the groove can be further reduced, and the smoothness of the product action is further improved.

4. The cross sections of the two opposite inner side surfaces of the groove are in an outer eight type, so that the requirement of clearance fit between the groove and the convex part can be met, and the reduction of friction can be guaranteed. The two ends of the convex part corresponding to the two inner side surfaces opposite to the groove are respectively designed into arc surfaces, so that the contact area of the convex part and the groove when the push rod part deflects in the movement process can be reduced, friction is reduced, and the phenomenon that the normal action of a product is influenced by scraping plastic scraps is avoided.

5. The groove is formed by the interval between the two convex ribs arranged at the position of the groove, the strength of the side wall where the groove is located can be ensured, and the phenomenon that the thickness of the side wall at the position of the groove is reduced due to the fact that the groove is directly formed by partially hollowing the side wall where the groove is located is avoided. Particularly, the width of the cross section of the convex rib is gradually increased from outside to inside along the depth direction of the groove, so that the strength of the convex rib is better, and the convex rib is easier to demould during injection molding.

6. And a supporting connection part matched with the abdicating notch is arranged between the part of the pushing rod part, which is provided with the moving contact, and the part of the auxiliary conductive part, which is provided with the pushing rod part, and the supporting connection part is arranged in the abdicating notch in a penetrating way, so that the accuracy of limiting the deflection of the pushing rod part can be improved by utilizing the matching of the supporting connection part and the abdicating notch. Particularly, the supporting connection part and the limiting structure are positioned on two sides of the moving contact in the width direction, so that the limiting formed by the supporting connection part and the abdicating notch and the limiting of the limiting structure to the pushing rod component are ensured to be in the same direction, and the effect of limiting deflection of the pushing rod component is better.

The invention is further explained in detail with the accompanying drawings and the embodiments; however, the high-voltage direct-current relay with the auxiliary contacts according to the present invention is not limited to the embodiment.

Drawings

FIG. 1 is a cross-sectional view of the first embodiment of the present invention;

FIG. 2 is a second cross-sectional view of the first embodiment of the present invention;

FIG. 3 is an exploded view of a partial structure of the present invention according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a push rod member and the like according to the first embodiment of the present invention (including two auxiliary terminals and the like);

FIG. 5 is a top view of a push rod member and components thereon (without a push rod) according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of an inner support shield according to one embodiment of the present invention;

FIG. 7 is a bottom view of the inner support shield of the present invention;

FIG. 8 is a bottom view of the inner support cover and pusher arm member portions of the present invention in an assembled state, embodying the present invention;

FIG. 9 is a cross-sectional view of an inner support shield and pusher arm assembly portion of the present invention in an assembled state, embodying the present invention;

FIG. 10 is a sectional view of the inner support cover and push rod assembly of the second embodiment of the present invention in an assembled state;

FIG. 11 is a sectional view of the inner support cover and the push rod member portion of the present invention in a combined state according to the third embodiment;

FIG. 12 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state according to the fourth embodiment;

FIG. 13 is a cross-sectional view of an inner support cover and a push rod assembly portion of the present invention in an assembled state in accordance with a fifth embodiment;

FIG. 14 is a sectional view of an inner support cover and a push rod member portion of the sixth invention in an assembled state;

FIG. 15 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state in accordance with the seventh embodiment;

FIG. 16 is a sectional view of an inner support cover and a push lever member part of the invention in a combined state of the embodiment;

FIG. 17 is a cross-sectional view of an inner support shield and pusher arm member portion of the present invention in an assembled state in accordance with an embodiment of the present invention;

FIG. 18 is a cross-sectional view of an inner support shield and pusher arm member portion of the present invention in an assembled state in accordance with an embodiment of the present invention;

FIG. 19 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state according to an eleventh embodiment;

FIG. 20 is a cross-sectional view of an inner support shield and pusher arm assembly portion of the twelfth embodiment of the present invention in assembled condition;

FIG. 21 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state according to a thirteenth embodiment;

FIG. 22 is a sectional view of an inner support cover and a push rod member portion of the fourteenth invention in an assembled state;

FIG. 23 is a sectional view of an inner support cover and a pusher arm member part of the fifteenth embodiment of the present invention in a combined state;

FIG. 24 is a cross-sectional view of an inner support shield and pusher arm assembly portion of the sixteen present invention in assembled condition;

FIG. 25 is a cross-sectional view of an inner support shield and pusher arm member portion of the seventeenth invention of an embodiment in combination;

FIG. 26 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state according to an eighteenth embodiment;

fig. 27 is a sectional view of an inner support cover and a push lever member part of the present invention in a combined state in a nineteenth embodiment;

FIG. 28 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state in accordance with an exemplary twenty-first embodiment;

FIG. 29 is a cross-sectional view of an inner support shield and a push rod assembly portion of the present invention in an assembled state in accordance with twenty-one embodiment;

FIG. 30 is a sectional view of an inner support cover and a push rod member portion of the present invention in a combined state in twenty-two embodiments;

FIG. 31 is a sectional view of an inner support cover and a push rod member portion of the twenty-three embodiment of the invention in a combined state;

FIG. 32 is a sectional view of an inner support cover and a push lever member part of the embodiment twenty-four of the invention in a combined state;

FIG. 33 is a cross-sectional view of an inner support cover and push rod assembly portion of the present invention in a combined state in accordance with twenty-five embodiments;

FIG. 34 is a cross-sectional view of an inner support shield and push rod assembly portion of the present invention in a combined state in accordance with twenty-six embodiments;

FIG. 35 is a sectional view of an inner support cover and a push rod assembly of the present invention in a combined state in accordance with a twenty-seventh embodiment;

FIG. 36 is a cross-sectional view of an inner support cover and push rod assembly portion of the twenty-eight embodiment of the present invention in assembled condition;

fig. 37 is a sectional view of an inner support cover and a push lever member part of the present invention in a combined state in a twenty-ninth embodiment;

FIG. 38 is a cross-sectional view of an inner support shroud and push rod assembly portion of the present invention in an assembled state in accordance with thirty embodiments thereof;

FIG. 39 is a sectional view showing an inner support cover and a push lever member part of the present invention in a combined state in thirty-one embodiment;

FIG. 40 is a sectional view showing an inner support cover and a push lever member part of the present invention in a combined state in accordance with thirty-two embodiment;

fig. 41 is a sectional view of an inner support cover and a push lever member part of the present invention in a combined state of embodiment thirty-three.

Detailed Description

Example one

Referring to fig. 1 to 9, the high-voltage direct-current relay with an auxiliary contact according to the present invention includes an inner support cover 1, a main contact, an auxiliary contact, and a push rod member 4, where the main contact includes a moving contact 2 and two fixed contacts 3, the moving contact 2 is a long-strip-shaped structure (therefore, the moving contact may be referred to as a moving contact, etc.), and moving contacts (the moving contact and the moving contact are integrally formed, but not limited thereto) at two ends of the moving contact are respectively and correspondingly matched with fixed contacts (the fixed contact and the fixed contacts 3 are integrally formed, but not limited thereto) at end portions of the two fixed contacts 3; the auxiliary contact comprises an auxiliary conductive piece and two auxiliary leading-out ends 6 matched with the two ends of the auxiliary conductive piece, the static contact 3 and the auxiliary leading-out ends 6 are respectively arranged at the top of the inner support cover 1 in a penetrating way, and the moving contact 2 and the auxiliary conductive piece are respectively arranged on the push rod part 4 and are positioned in the inner support cover 1; the inner support cover 1 and the push rod part 4 are matched with a limiting structure for limiting the deflection of the push rod part 4. The limiting structure specifically comprises a convex part 421 and a groove 11 which is through up and down, the convex part 421 is arranged on the push rod part 4, the groove 11 is arranged on the inner side surface of the inner support cover 1, the convex part 421 is arranged in the groove 11, the convex part 421 and the groove 11 are in clearance fit, and when the push rod part 4 deflects around the axis of the push rod part, the convex part 421 is in contact fit with the groove 11. In this way, the pushing lever member 4 can be surely prevented from interfering with the inner support cover 1 during the assembling process, and can be operated more smoothly in the non-deflected state.

In this embodiment, since the protrusions 421 and the grooves 11 are in clearance fit, a distance between two opposite inner side surfaces of the grooves 11 is greater than a distance between two opposite outer side surfaces of the protrusions 421. Thus, the convex part 421 and the groove 11 realize single-side contact when the push rod part 4 deflects, thereby reducing the contact friction force of the convex part 421 and the groove 11 and ensuring the product action to be smoother.

In this embodiment, the protrusion 421 and the groove 11 are in line-surface contact, so that the contact friction force between the protrusion 421 and the groove 11 can be further reduced, and the smoothness of the product operation can be further improved.

In this embodiment, the cross section of the groove 11 is trapezoidal with an opening at the lower bottom, so that the cross sections of two inner side surfaces opposite to the groove 11 are in an outer eight type, thereby meeting the requirement of clearance fit between the groove 11 and the protrusion 421 and ensuring that friction is reduced. Convex part 421 cross sectional profile is squarely, and its two lateral surface matched with both ends that are used for being relative with recess 11 establish respectively to big fillet, so for recess 11 and convex part 421 realize line face contact cooperation reaches the area of contact's that further reduces convex part 421 and recess 11 when catch bar part 4 takes place to deflect purpose, thereby reduces the friction, can also avoid scraping out the plastics bits and influence the normal action of product.

In this embodiment, the groove 11 is formed by the space between the two ribs 12 at the position where the groove is located, so that the strength of the position where the groove 11 is located can be ensured, and the forming is easier. Particularly, the width of the cross section of the convex rib 12 is gradually increased from outside to inside along the depth direction of the groove 11, so that the strength of the convex rib 12 is better, and the convex rib 12 is easier to demould during injection molding.

In this embodiment, the inside main contact chamber 13 and the auxiliary contact chamber 14 that separate each other that are equipped with of interior support cover 1, moving contact 2 is located main contact chamber 13, the auxiliary conductive piece is located in the auxiliary contact chamber 14, the partition wall between main contact chamber 13 and the auxiliary contact chamber 14 is equipped with the breach of stepping down 15, catch bar part 4 sets up moving contact 2's part and setting set up between the part of the auxiliary conductive piece with the portion 422 that sets up the breach of stepping down 15 adaptation, the portion 422 that props up wears to locate the breach of stepping down 15, just the both ends of the portion 422 that props up respectively to the direction extension in main contact chamber 12 and auxiliary contact chamber 14.

In this embodiment, the branch connection portion 422 and the convex portion 421 of the limiting structure are located on two sides of the movable contact 2 in the width direction, and a connection line between the branch connection portion 422 and the convex portion 421 is consistent with the width direction of the movable contact 2, as shown in fig. 5, so that the limitation formed by the branch connection portion 422 and the abdicating notch 15 and the limitation of the limiting structure to the push rod member 4 are both located in the width direction of the movable contact, and the effect of limiting deflection of the push rod member 4 is better. The horizontal distance between the center point of the supporting connection part 422 and the center point of the moving contact 2 in the width direction of the moving contact 2 is greater than the horizontal distance between the center point of the supporting connection part 422 and the center point of the auxiliary conductive piece in the width direction of the moving contact 2, so that when the push rod component 4 deflects with the supporting connection part 422 as a fulcrum, the deflection displacement of the part of the push rod component 4 where the auxiliary conductive piece is arranged is smaller.

In this embodiment, the push rod part 4 includes a spring seat 42, a push rod 41 and a support 43, the upper end of the push rod 41 is fixed to the spring seat 42, the support 43 is disposed on the spring seat 42, the moving contact 2 is disposed in the support 43 in a manner of moving up and down, and a contact spring 7 is fitted between the moving contact 2 and the spring seat 42; the auxiliary conductive piece is arranged on the spring seat 42 and positioned at the side of the bracket 43; the side surface of the spring seat 42, which faces away from the auxiliary conductive member, is provided with the protrusion 421. The auxiliary conductive member is specifically an elastically deformable auxiliary reed 5, which is substantially in a shape of a Chinese character ji, and the middle part of the auxiliary conductive member is fixed to the spring seat 42, and the two ends of the auxiliary conductive member are respectively matched with the two auxiliary leading-out ends 6 correspondingly. The support 43 is in an inverted U shape, the spring seat 42 is made of an insulating material, and two sides of the auxiliary spring, the push rod 41 and the support 43 are respectively formed with the spring seat 42 through insert injection molding, but not limited thereto.

In this embodiment, the present invention further includes a housing 8, a yoke barrel 9, a coil assembly 50, a movable iron core 40, a yoke plate 20, a frame piece 10, and a reaction spring 30, where the yoke barrel is disposed in the housing, the inner support cover 1 and the coil assembly 50 are distributed in the yoke barrel 9 from top to bottom, and the frame piece 10 and the yoke plate 20 are sequentially disposed therebetween from top to bottom, the movable iron core 40 is disposed in the coil assembly 50 in a vertically movable manner, the push rod 41 penetrates the frame piece 10 and the yoke plate 20, and the lower end of the push rod 41 is fixedly connected to the movable iron core 40, and the reaction spring 30 is sleeved outside the push rod 41 and is stretched between the yoke plate 20 and the movable iron core 40.

According to the high-voltage direct-current relay with the auxiliary contacts, the convex part 421 is in clearance fit with the groove 11 before the contacts are attracted, as shown in fig. 8 and 9. When the coil of the coil assembly 50 is excited, the movable iron core 40 moves upward under the action of the magnetic field, compresses the reaction spring 30, and drives the push rod component 4 to move upward, and along with the upward movement of the push rod component 4, the movable contact 2 moves upward, until contacting with the bottoms of the two fixed contacts 3, and the contact spring 713 is compressed; similarly, the auxiliary spring 5 also moves upward along with the push rod member 4 until contacting with the two auxiliary terminals 6. In the process, the push rod part 4 tends to deflect to one side under the action of the reaction spring 30, so that the convex part 421 is in line-surface contact fit with one inner side surface of the groove 11, the push rod part 4 is deflected and limited, interference between the auxiliary spring piece and a part of the inner support cover 1 for fixing the auxiliary leading-out end 6 is avoided, smooth action of a product is ensured, and the auxiliary spring piece 5 is prevented from being broken when the product is subjected to a mechanical life test due to interference to the inner support cover 1.

Example two

Referring to fig. 10, a high-voltage direct-current relay with auxiliary contacts according to the first embodiment of the present invention is different from the first embodiment in that: the cross section of the groove 11 is n-shaped, and the wire-surface contact matching can be realized when the groove is contacted with the convex part 421.

EXAMPLE III

Referring to fig. 11, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the first embodiment in that: the cross section of the groove 11 is arc-shaped.

Example four

Referring to fig. 12, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the first embodiment in that: the cross section of the groove 11 is V-shaped, and when the groove is contacted with the convex part 421, the line-surface contact matching can be realized.

EXAMPLE five

Referring to fig. 13, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the fourth embodiment in that: the cross section of the groove 11 is V-shaped, the included angle of two sides of the V-shaped groove is large, and the groove 11 can be in contact with the convex part 421 to realize line-surface contact matching.

EXAMPLE six

Referring to fig. 14, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the first embodiment in that:

the cross section of the convex part 421 is square, and two ends of the convex part for matching with two inner side surfaces opposite to the groove 11 are respectively set to be small round corners, so that the groove 11 can be in line-surface contact matching with the convex part 421.

EXAMPLE seven

Referring to fig. 15, the difference between the high-voltage direct-current relay with the auxiliary contacts of the present invention and the sixth embodiment is:

the cross section of the groove 11 is n-shaped.

Example eight

Referring to fig. 16, the difference between the high-voltage direct-current relay with the auxiliary contacts of the present invention and the sixth embodiment is: the cross section of the groove 11 is arc-shaped.

Example nine

Referring to fig. 17, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the sixth embodiment in that:

the cross section of the groove 11 is V-shaped, the included angle of two sides of the V-shaped is large, and the groove 11 can be in line-surface contact fit with the convex part 421 when in contact.

Example ten

Referring to fig. 18, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the first embodiment in that:

the cross section of the protrusion 421 has a trapezoidal profile, and the upper bottom surface of the trapezoidal profile faces the groove 11.

EXAMPLE eleven

Referring to fig. 19, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross section of the groove 11 is n-shaped.

Example twelve

Referring to fig. 20, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross section of the groove 11 is arc-shaped.

EXAMPLE thirteen

Referring to fig. 21, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross section of the groove 11 is V-shaped, and the included angle of two sides of the V-shaped groove is larger.

Example fourteen

Referring to fig. 22, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the first embodiment in that:

the cross-sectional profile of the protrusion 421 is triangular, and one vertex of the triangle faces the groove 11.

Fifteen embodiments

Referring to fig. 23, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the fourteenth embodiment in that: the cross section of the groove 11 is n-shaped.

Example sixteen

Referring to fig. 24, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above-mentioned fourteenth embodiment in that: the cross section of the groove 11 is arc-shaped.

Example seventeen

Referring to fig. 25, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above-mentioned fourteenth embodiment in that: the cross section of the groove 11 is V-shaped, and the included angle of two sides of the V-shaped groove is larger.

EXAMPLE eighteen

Referring to fig. 26, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above embodiments in that: the convex part 421 is arranged on the inner support cover 1, the groove 11 is arranged on the push rod part 4, specifically, the groove 11 is arranged on the side surface of the spring seat 42 opposite to one side of the auxiliary conductive part, and the groove 11 is also formed by the interval between the two convex ribs 12 arranged at the position where the groove 11 is located.

In this embodiment, the cross section of recess 11 is under the open-ended trapezoidally, the profile of the cross section of convex part 421 is squarely, and it is used for establishing respectively to little fillet with two medial surface matched with both ends that recess 11 is relative, so, can realize the cooperation of line face contact when making recess 11 and convex part 421 contact equally, reach the purpose that further reduces round chamfer and the area of contact of recess 11 of convex part 421 when catch bar part 4 takes place to deflect, thereby reduce friction, can also avoid scraping out the plastics bits and influence the normal action of product.

Example nineteen

Referring to fig. 27, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross section of the groove 11 is n-shaped.

Example twenty

Referring to fig. 28, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above-mentioned fourteenth embodiment in that: the cross section of the groove 11 is arc-shaped.

Example twenty one

Referring to fig. 29, the difference between the high-voltage direct-current relay with the auxiliary contacts of the present invention and the above-mentioned fourteenth embodiment is: the cross section of the groove 11 is V-shaped.

Example twenty two

Referring to fig. 30, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross section of the protrusion 421 has a trapezoidal profile, and the upper bottom surface of the trapezoidal profile faces the groove 11.

Example twenty three

Referring to fig. 31, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the twenty-second embodiment in that: the cross section of the groove 11 is n-shaped.

Example twenty-four

Referring to fig. 32, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the twenty-second embodiment in that: the cross section of the groove 11 is arc-shaped.

Example twenty-five

Referring to fig. 33, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the twenty-second embodiment in that: the cross section of the groove 11 is V-shaped.

Example twenty-six

Referring to fig. 34, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross-sectional profile of the protrusion 421 is triangular, and one vertex of the triangle faces the groove 11.

Example twenty-seven

Referring to fig. 35, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the twenty-sixth embodiment in that: the cross section of the groove 11 is n-shaped.

Example twenty-eight

Referring to fig. 36, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the twenty-sixth embodiment in that: the cross section of the groove 11 is arc-shaped.

Example twenty-nine

Referring to fig. 37, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the twenty-sixth embodiment in that: the cross section of the groove 11 is V-shaped.

Example thirty

Referring to fig. 38, a high-voltage direct-current relay with auxiliary contacts according to the present invention is different from the above-mentioned embodiment in that: the cross section of the protrusion 421 has a convex arc shape.

Example thirty-one

Referring to fig. 39, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above embodiment in that: the cross section of the groove 11 is n-shaped.

Example thirty-two

Referring to fig. 40, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above embodiment in that: the cross section of the groove 11 is arc-shaped.

Example thirty-three

Referring to fig. 41, a high-voltage dc relay with auxiliary contacts according to the present invention is different from the above embodiment in that: the cross section of the groove 11 is V-shaped.

The parts which are not involved in the high-voltage direct-current relay with the auxiliary contacts are the same as or can be realized by adopting the prior art.

The above embodiments are only used to further illustrate the high-voltage direct-current relay with the auxiliary contact of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A high-voltage direct-current relay with auxiliary contacts comprises an inner support cover, main contacts, auxiliary contacts and a pushing rod component, wherein the main contacts comprise moving contacts and two static contacts, and the moving contacts at the two ends of the moving contacts are respectively matched with the static contacts at the end parts of the two static contacts correspondingly; the auxiliary contact comprises an auxiliary conductive piece and two auxiliary leading-out ends matched with the two ends of the auxiliary conductive piece, the static contact and the auxiliary leading-out ends are respectively arranged at the top of the inner support cover in a penetrating way, and the moving contact and the auxiliary conductive piece are respectively arranged on the push rod part and are positioned in the inner support cover; the method is characterized in that: the inner support cover and the push rod part are matched with a limiting structure for limiting the deflection of the push rod part.

2. The hvdc relay with auxiliary contacts of claim 1, wherein: the limiting structure comprises a convex part and a groove, the convex part is arranged on the pushing rod component, the groove is arranged on the inner support cover, or the convex part is arranged on the inner support cover, and the groove is arranged on the pushing rod component; the protrusion is located in the groove.

3. The hvdc relay with auxiliary contacts of claim 2, wherein: the convex part is in clearance fit with the groove, and when the push rod part deflects around the axis of the push rod part, the convex part is in contact fit with the groove.

4. The HVDC relay with auxiliary contact of claim 3, wherein: when the push rod part deflects, the convex part is in line-surface contact fit with the groove.

5. The HVDC relay with auxiliary contacts of any of claims 2-4, wherein: the groove is communicated up and down, and the cross section of the groove is in a U shape, a reverse U shape, a V shape or a trapezoid or arc shape with an opening at the lower bottom; the cross section of the convex part is square, or at least the end part of the convex part is in an outward convex arc shape, or is in a trapezoid shape, or is in a triangle shape, or is in a square shape with round corners, the upper bottom surface of the trapezoid faces the groove, and one vertex angle of the triangle faces the groove.

6. The HVDC relay with auxiliary contact of any of claims 2-4, wherein: the groove is formed by the interval between two convex ribs arranged at the position of the groove.

7. The hvdc relay with auxiliary contacts according to claim 6, wherein: the width of the cross section of the convex rib is gradually increased from outside to inside along the depth direction of the groove.

8. The HVDC relay with auxiliary contacts of any one of claims 1-4, wherein: the inner support cover is internally provided with a main contact cavity and an auxiliary contact cavity which are separated from each other, the moving contact is positioned in the main contact cavity, the auxiliary conductive piece is positioned in the auxiliary contact cavity, a partition wall between the main contact cavity and the auxiliary contact cavity is provided with a abdication notch, the push rod component is arranged between the part of the moving contact and the part of the auxiliary conductive piece, a branch connecting part matched with the abdication notch is arranged between the part of the auxiliary conductive piece, the branch connecting part is penetrated in the abdication notch, and two ends of the branch connecting part respectively extend towards the main contact cavity and the auxiliary contact cavity.

9. The hvdc relay with auxiliary contacts of claim 8, wherein: the branch connecting part and the limiting structure are positioned on two sides of the moving contact in the width direction, and the arrangement direction of the branch connecting part and the limiting structure is positioned in the width direction of the moving contact; the horizontal distance between the center point of the branch connecting part and the center point of the moving contact in the width direction of the moving contact is larger than the horizontal distance between the center point of the branch connecting part and the center point of the auxiliary conductive part in the width direction of the moving contact.

10. The hvdc relay with auxiliary contacts of claims 2-4, wherein: the push rod component comprises a spring seat, a push rod and a support, the upper end of the push rod is fixed on the spring seat, the support is arranged on the spring seat, the moving contact is arranged in the support in a vertically movable mode, and a contact spring is matched between the moving contact and the spring seat; the auxiliary conductive piece is arranged on the spring seat and is positioned beside the bracket; the convex part or the groove is arranged on the side surface of the spring seat, which is back to the auxiliary conductive part.

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