CN215183755U - Structure for blocking arc root transfer of magnetic latching direct current contactor - Google Patents

Abstract

The utility model discloses a structure of a magnetic latching direct current contactor for blocking arc root transfer, relating to the technical field of relays; comprises a shape base and a contact component arranged in the base; the contact assembly comprises a static contact piece, a dynamic contact piece, a static contact arranged on the static contact piece, a dynamic contact arranged on the dynamic contact piece and a driving group for driving the dynamic contact to be close to or far away from the static contact; the movable reed is connected with the movable connecting piece; the static contact piece is provided with a static terminal, and the movable contact piece is provided with a movable terminal; the insulating plate, the static contact piece, the dynamic contact piece and the base enclose a second accommodating space; a baffle plate group is formed on the insulating plate or the base, covers the static contact piece and exposes the static terminal; adopt the technical scheme provided by the utility model the technical problem that current magnetic latching relay is difficult to satisfy the arc extinguishing requirement when realizing the miniaturization has been solved.

Description

Structure for blocking arc root transfer of magnetic latching direct current contactor

Technical Field

The utility model relates to a relay technical field especially relates to a magnetic latching direct current contactor blocks structure that the arc root shifted.

Background

In the field of magnetic latching relays, in order to ensure that the space between load terminals is enough, after a magnet arc extinguishing structure is added, the arc extinguishing requirement of a product during an electrical service life test can be met, and the product is large in size generally; the difficulty that whether the electrical service life of a direct-current load product can meet the requirements is the largest is arc extinction, natural arc extinction or forced arc extinction is generally adopted for the arc extinction of the magnetic latching products, the natural arc extinction is realized by lengthening or moving an arc by depending on the mechanical force of the product, the arc extinction capability is limited, and only a small direct-current load can be cut off under the limitation of the volume of the product; the forced arc extinguishing is to add a magnet at the contact of the product, and to apply an external magnetic field to strengthen the elongation and movement of the electric arc so as to extinguish the electric arc, so that a larger direct current load can be cut off, and the forced arc extinguishing is a common arc extinguishing mode for the products at present;

a magnet forced arc extinguishing structure is added, and the arc is elongated and moved by applying the acting force of a magnetic field on charged ions and is far away from a contact; contacts of the product are riveted on load terminals, electric arcs can be close to the load terminals after being stretched and moved, and arc roots of the electric arcs can be transferred to the terminals for continuous combustion from the contacts when the distance between the load terminals is small and the electric potential difference of the electric arcs for continuous combustion is met; as market demands change, the volume of such magnetic holding products is continuously reduced, so that the space between load terminals is also compressed; the volume of the product is only about 1/3 of similar products on the market, the distance between load terminals is greatly reduced, and because the distance between the terminals is small, arc roots of electric arcs can be transferred between the contacts to cause the continuous burning of the electric arcs when the electric life is cut off, and finally the contacts are burnt to fuse, so that the product is invalid; the arc extinguishing requirements of the miniature and heavy-load products cannot be met only by adopting the conventional magnetized iron arc extinguishing structure.

Therefore, there is a need for further improvement of the existing product structure, which can satisfy the arc extinguishing requirements of the product while satisfying the miniaturization and miniaturization of the product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a magnetic latching direct current contactor blocks the structure that the arc root shifted, adopts the utility model provides a technical scheme has solved current magnetic latching relay and is difficult to satisfy the technical problem that the arc extinguishing required when realizing the miniaturization.

In order to solve the technical problem, the utility model provides a structure of a magnetic latching direct current contactor for blocking arc root transfer, which comprises a base with a first accommodating space and a contact assembly arranged in the base;

the contact assembly comprises a static contact piece, a dynamic contact piece, a static contact arranged on the static contact piece, a dynamic contact arranged on the dynamic contact piece and a driving group for driving the dynamic contact to be close to or far away from the static contact; the movable reed is connected with the movable connecting piece;

the static contact strip is provided with a static terminal, the movable contact strip is provided with a movable terminal, and the static terminal and the movable terminal partially penetrate through the bottom of the base and expose out of the base;

the insulating plate, the static contact piece, the dynamic contact piece and the base enclose a second accommodating space;

a baffle plate group is formed on the insulating plate or the base, covers the static contact piece and exposes the static terminal;

in the implementation process, when the driving group is excited, the driving group drives the movable spring leaf to be close to or far away from the static contact piece, so that the movable contact and the static contact are contacted with each other or far away from each other, and the switching of the open-close state of the circuit is realized; this application is through unique baffle group structure, with the quiet place except that quiet terminal on the contact piece cover the parcel, the arc root of effectual solution electric arc shifts to between the terminal between the contact, leads to the problem of electric arc sustained combustion, has effectively avoided the contact to burn melting welding, the problem of product ageing promotes the life of product quality and product, compact structure is small and exquisite, has effectively solved the problem of electric arc when satisfying the miniaturization.

Preferably, the baffle set comprises a first baffle formed on the side wall of the base, a third accommodating space is formed between the first baffle and the side wall of the base, and the static connecting piece is embedded in the third accommodating space;

in the implementation process, the first baffle is formed by extending the base, and a third accommodating space formed between the baffle and the base can be embedded by static contact pieces, so that the static contact pieces are fixed; because the first baffle extends out from the base to form, the problem of mould structure is avoided, and the static connecting piece is more effectively surrounded and the problem of forming deformation is solved.

Preferably, a first notch is formed in the first baffle, and the static terminal is placed in the first notch;

preferably, the baffle group further comprises a second baffle formed by extending the insulating plate;

the first baffles on the upper side and the lower side of the first notch are respectively a long plate and a short plate, and the length of the long plate is greater than that of the short plate; the second baffle is complementary with the short plate and forms an annular ring around the static contact point together with the long plate;

in the implementation process, the first baffle and the second baffle are matched with each other to form an annular ring to wrap the static contact around, so that the arc heel transfer is effectively organized, the internal structure of the product is protected, and the service life of the product is prolonged; in addition, adopt this mode also to be favorable to the assembly of product, baffle group is formed by the cooperation of first baffle and second baffle, and when assembling, the embedding third accommodation space that quiet splicing can relax is installed the insulation board again afterwards and is accomplished the parcel cover to quiet splicing on the base, facilitates for the assembly of product, reduces the production degree of difficulty of product.

Preferably, the height of the static contact along the axial direction of the static contact is higher than the plate surface of the baffle group;

preferably, a clamping block is formed on one side, close to the movable connecting piece, of the insulating plate, and a first clamping groove matched with the clamping block is formed in the base in an extending mode; a second clamping groove is formed in the base on the other side, opposite to the first clamping groove, and the insulating plate is clamped in the first clamping groove and the second clamping groove;

in the above-mentioned realization process, the insulation board passes through in the first draw-in groove of fixture block embedding, and the second draw-in groove on the side embedding base of insulation board realizes being connected of insulation board and fixed of base in proper order, and simple structure is compact, and make full use of inner space makes overall structure smaller and more exquisite, does benefit to the miniaturization of product.

Preferably, a guide slope is formed at an initial end portion of the second card slot;

in the above-mentioned implementation process, when inserting the insulation board into the second draw-in groove, the direction slope can guide the insulation board card to go into in the second draw-in groove, facilitates for the installation of insulation board.

Compared with the prior art, the beneficial effects of the utility model reside in that: the baffle plates extend out of the insulating plate and the base respectively, and the parts of the static contact pieces except the static contact are wrapped and covered, so that the problems that the arc root of an electric arc is transferred between the contacts and between the terminals, the electric arc is continuously combusted, the welding is burnt by the final contacts, and the product fails are solved, the product quality is improved, and the service life of the product is prolonged; in addition, the baffle extends out from base and insulation board respectively, and the two is mutually supported, not only can avoid the difficult problem of mold design simultaneously in the equipment of being convenient for, and more effectual parcel is carried out to quiet terminal.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic diagram of the overall structure of one embodiment of the present application;

FIG. 2 is an enlarged schematic view of the structure of portion A of FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of one embodiment of the present application;

FIG. 4 is a schematic view of the structure of FIG. 3 in partial section;

FIG. 5 is a schematic diagram of a portion of one embodiment of the present application;

FIG. 6 is a schematic diagram of a portion of one embodiment of the present application;

FIG. 7 is an enlarged schematic view of the structure of portion B of FIG. 6;

fig. 8 is an enlarged schematic view of a part of the structure of one embodiment of the present application.

Wherein: 10. a base; 11. a first baffle plate; 11a, a long plate; 11b, short plates; 20. a contact assembly; 21. a movable connecting sheet; 211. a movable terminal; 22. a movable spring plate; 221. a movable contact; 23. a static contact piece; 231. a stationary contact; 232. a stationary terminal; 30. a drive group; 40. an insulating plate; 41. a second baffle; 42. a clamping block; 43. a first card slot; 44. a second card slot; 441. a guide ramp; 50. and a magnet.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indicators in the embodiments of the present invention, such as upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

For further understanding of the contents, features and functions of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings as follows:

examples

A magnet forced arc extinguishing structure is added, and the arc is elongated and moved by applying the acting force of a magnetic field on charged ions and is far away from a contact; contacts of the product are riveted on load terminals, electric arcs can be close to the load terminals after being stretched and moved, and arc roots of the electric arcs can be transferred to the terminals for continuous combustion from the contacts when the distance between the load terminals is small and the electric potential difference of the electric arcs for continuous combustion is met; as market demands change, the volume of such magnetic holding products is continuously reduced, so that the space between load terminals is also compressed; the volume of the product is only about 1/3 of similar products on the market, the distance between load terminals is greatly reduced, and because the distance between the terminals is small, arc roots of electric arcs can be transferred between the contacts to cause the continuous burning of the electric arcs when the electric life is cut off, and finally the contacts are burnt to fuse, so that the product is invalid; the arc extinguishing requirements of the miniature and heavy-load products cannot be met only by adopting a conventional magnetized iron arc extinguishing structure; in order to solve the technical problem, the present embodiment provides the following technical solutions:

specifically, referring to fig. 1 to 8, the present embodiment provides a structure for blocking arc root transfer of a magnetic latching dc contactor; comprises a base 10 formed with a first accommodating space, a contact assembly 20 arranged in the base 10;

the contact assembly 20 comprises a static contact piece 23, a dynamic contact piece 21, a dynamic contact piece 22, a static contact 231 arranged on the static contact piece 23, a dynamic contact 221 arranged on the dynamic contact piece 22, and a driving group 30 for driving the dynamic contact 221 to be close to or far away from the static contact 231; the movable spring piece 22 is connected with the movable connecting piece 21;

specifically, the static contact piece 23 is provided with a static terminal 232, the dynamic contact piece 21 is provided with a dynamic terminal 211, and the static terminal 232 and the dynamic terminal 211 partially penetrate through the bottom of the base 10 and expose out of the base 10;

furthermore, the device also comprises an insulating plate 40 which is detachably arranged on the base 10 and is arranged on the side edges of the static contact piece 23 and the dynamic contact piece 21, wherein the insulating plate 40, the static contact piece 23, the dynamic contact piece 21 and the base 10 enclose a second accommodating space;

specifically, a baffle group is formed on the insulating plate 40 or the base 10, and the baffle group covers the static contact piece 23 and exposes the static terminal 232;

in the above scheme, when the driving group 30 is excited, the driving group 30 drives the movable spring piece 22 to approach or separate from the fixed contact piece 23, so that the movable contact 221 and the fixed contact 231 are contacted or separated from each other, and the switching of the circuit opening and closing state is realized; the novel electric arc welding device has the advantages that the positions except the static terminal 232 on the static connecting piece 23 are covered and wrapped through the unique baffle plate group structure, the problem that the electric arc is continuously burnt due to the fact that the arc root of the electric arc is transferred between the contacts and between the terminals is effectively solved, the problems of fusion welding caused by burning of the contacts and product aging are effectively solved, the product quality is improved, the service life of the product is prolonged, the structure is compact and small, and the problem of the electric arc is effectively solved while the miniaturization is met;

the driving assembly 30 includes a permanent magnet 50, a yoke, a winding, etc., and the specific structure and principle of the driving assembly 30 of the relay can refer to the prior art, which is not described herein again;

further, magnets 50 are disposed on both sides of the stationary contact piece 23 and the movable contact piece 21, and the magnets 50 are mounted on the insulating sheet or the base 10.

Specifically, the baffle group comprises a first baffle 11 formed on the side wall of the base 10, a third accommodating space is formed between the first baffle 11 and the side wall, and the static connecting sheet 23 is embedded in the third accommodating space;

in the above scheme, the first baffle 11 is formed by extending the base 10, and the third accommodating space formed between the baffle and the base 10 can be embedded by the static contact piece 23, so that the static contact piece 23 is fixed; since the first baffle 11 is formed by extending from the base 10 to avoid the problem of mold structure, the static contact piece 23 is more effectively surrounded and the problem of molding deformation is solved.

Specifically, a first notch is formed on the first baffle 11, and the static terminal 232 is disposed in the first notch;

specifically, the baffle group further comprises a second baffle 41 formed by extending the insulating plate 40; the first baffle plates 11 on the upper side and the lower side of the first notch are respectively a long plate 11a and a short plate 11b, and the length of the long plate 11a is greater than that of the short plate 11 b; the second stop 41 is complementary to the short plate 11b and forms an annular ring around the stationary contact 231 together with the long plate 11a

In the above scheme, the first baffle 11 and the second baffle 41 cooperate to form an annular ring to wrap the stationary contact 231 around, so that the arc heel transfer is effectively organized, the internal structure of the product is protected, and the service life of the product is prolonged; in addition, adopt this mode also to be favorable to the assembly of product, baffle group is formed by the cooperation of first baffle 11 and second baffle 41, and when assembling, static contact piece 23 can be light imbed the third accommodation space and then install insulating board 40 on base 10 and accomplish the parcel of static contact piece 23 and cover, facilitates for the assembly of product, reduces the production degree of difficulty of product.

Specifically, the height of the stationary contact 231 along the axial direction thereof is higher than the plate surface of the baffle plate group;

specifically, a latch 42 is formed on one side of the insulating plate 40 close to the movable contact piece 21, and a first latch groove 43 matched with the latch 42 is formed in the base 10 in an extending manner; a second clamping groove 44 is formed on the base 10 at the other side opposite to the first clamping groove 43, and the insulating plate 40 is clamped in the first clamping groove 43 and the second clamping groove 44;

in the above scheme, the insulation board 40 passes through in the first draw-in groove 43 of fixture block 42 embedding, and the second draw-in groove 44 on the side embedding base 10 of insulation board 40 realizes being connected with being fixed of insulation board 40 and base 10 in proper order, and simple structure is compact, and make full use of inner space makes overall structure smaller and more exquisite, does benefit to the miniaturization of product.

Further, a guide slope 441 is formed at an initial end portion where the second locking groove 44 is inserted;

in the above-described aspect, when the insulating plate 40 is inserted into the second slot 44, the guide slope 441 may guide the insulating plate 40 to be inserted into the second slot 44, thereby facilitating installation of the insulating plate 40.

In conclusion, the baffles extend out of the insulating plate 40 and the base 10 respectively, and the parts of the static contact pieces 23 except the static contact 231 are wrapped and covered, so that the problems that the arc roots of the electric arc are transferred from the contacts to the terminals to cause the continuous combustion of the electric arc, the fusion welding is burnt by the final contacts, and the product is invalid can be solved effectively, the product quality is improved, and the service life of the product is prolonged; in addition, the baffle extends out from base 10 and insulating board 40 respectively, and the two mutually support, not only can avoid the difficult problem of mould design simultaneously in the equipment of being convenient for, and more effectual parcel is carried out quiet terminal 232.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments belong to the scope of the technical solution of the present invention.

Claims (7)

1. The utility model provides a structure that magnetic latching direct current contactor blockked arc root and shifted which characterized in that: the contact assembly comprises a base and a contact assembly, wherein a first accommodating space is formed in the base;

the contact assembly comprises a static contact piece, a dynamic contact piece, a static contact arranged on the static contact piece, a dynamic contact arranged on the dynamic contact piece and a driving group for driving the dynamic contact to be close to or far away from the static contact; the movable reed is connected with the movable connecting piece;

the static contact strip is provided with a static terminal, the movable contact strip is provided with a movable terminal, and the static terminal and the movable terminal partially penetrate through the bottom of the base and expose out of the base;

the insulating plate, the static contact piece, the dynamic contact piece and the base enclose a second accommodating space;

and a baffle plate group is formed on the insulating plate or the base and covers the static contact piece and exposes the static terminal.

2. The structure for blocking arc root transfer according to claim 1, wherein: the baffle group comprises a first baffle formed on the side wall of the base, a third accommodating space is formed between the first baffle and the side wall of the base, and the static sheet is embedded in the third accommodating space.

3. The structure for blocking arc root transfer according to claim 2, wherein: a first notch is formed in the first baffle, and the static terminal is arranged in the first notch.

4. The structure for blocking arc root transfer according to claim 3, wherein: the baffle group also comprises a second baffle formed by extending the insulating plate;

the first baffles on the upper side and the lower side of the first notch are respectively a long plate and a short plate, and the length of the long plate is greater than that of the short plate; the second baffle is complementary to the short plate and forms an annular ring around the stationary contact together with the long plate.

5. The structure for blocking arc root transfer according to claim 4, wherein: the height of the static contact along the axial direction of the static contact is higher than the plate surface of the baffle group.

6. The structure for blocking arc root transfer according to any one of claims 1 to 5, wherein: a clamping block is formed on one side, close to the movable splicing sheet, of the insulating plate, and a first clamping groove matched with the clamping block is formed in the base in an extending mode; and a second clamping groove is formed on the base at the other side opposite to the first clamping groove, and the insulating plate is clamped in the first clamping groove and the second clamping groove.

7. The structure for blocking arc root transfer according to claim 6, wherein: a guide slope is formed at an initial end portion where the second card slot is inserted.

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