CN113675042A - Conductive contact head structure and relay - Google Patents

Abstract

The invention discloses a conductive contact head structure and a relay, and relates to the technical field of relay structures, wherein the conductive contact head structure comprises a static contact; the moving contact is movably arranged relative to the fixed contact; wherein, be provided with electrically conductive slot structure on one in static contact and the moving contact, be provided with electrically conductive plug structure on the other, at least one in slot structure and the plug structure is elastic construction to make plug structure and slot structure grafting back surface between them can offset and electric property intercommunication, and the normal direction of butt surface is not with the grafting direction collineation between them. Through mutual grafting of plug structure and slot structure, the adjustment produces between the two electronic repulsion to the effect direction of moving contact for the plug structure is difficult for breaking away from in the grafting recess because of electronic repulsion after inserting slot structure, has improved moving contact and the closed back electric connection's between the two compactness of static contact, improves the stability and the reliability of relay.

Description

Conductive contact head structure and relay

Technical Field

The invention relates to the technical field of relay structures, in particular to a conductive contact head structure and a relay.

Background

In the prior art, as shown in fig. 1, a conductive contact structure 1 of a relay generally includes a fixed contact 101 and a movable contact 102, and when the movable contact 102 and the fixed contact 101 of the relay are closed, an electric repulsive force is generated, that is, when the movable contact 102 moves toward the fixed contact 101 along a direction G to be closed with the fixed contact 101, the electric repulsive force is generated between the two, where a force acting on the fixed contact 101 is F, and a force acting on the movable contact 102 is F ', F' causes a closing resistance to the movable contact 102 and the fixed contact 101, so that the movable contact 102 and the fixed contact 101 are not tightly closed, a gap exists between the movable contact 102 and the fixed contact 102 to generate an electric arc, and the generation of the electric arc causes the movable contact 102 and the fixed contact 101 to be fusion-welded and bonded, thereby affecting the contact and separation of the movable contact 102 and the fixed contact 101.

Therefore, a conductive contact structure solution with tight closing and easy separation needs to be provided.

Disclosure of Invention

In order to overcome at least one of the above-mentioned drawbacks of the prior art, a first object of the present invention is to provide a conductive contact structure, so as to solve the problem that the closing effect of the conventional conductive contact structure is affected by the existence of electric repulsion.

The technical scheme adopted by the invention for solving the problems is as follows:

a conductive contact structure comprising: static contact; the moving contact is movably arranged relative to the fixed contact; wherein, be provided with electrically conductive slot structure on one in static contact and the moving contact, be provided with electrically conductive plug structure on the other, at least one in slot structure and the plug structure is elastic construction to make plug structure and slot structure grafting back surface between them can offset and electric property intercommunication, and the normal direction of butt surface is not with the grafting direction collineation between them.

Further, the socket structure includes a first elastic member, the first elastic member forms a hollow and contractible or expandable plug channel, and the plug structure is inserted into the plug channel and abuts against a surface of the first elastic member.

Furthermore, the slot structure further comprises a rigid connecting body, an inserting groove is formed in the connecting body, and the first elastic piece is arranged on the inner wall of the inserting groove.

Furthermore, the inner wall of the insertion groove is provided with an accommodating groove, and the first elastic piece is arranged in the accommodating groove and protrudes out of the accommodating groove on the surface.

Furthermore, the plug structure is an elastic structure, the slot structure further comprises a rigid connecting body, and an inserting groove for inserting the plug structure is formed in the connecting body.

Furthermore, the plug structure comprises a second elastic piece, the second elastic piece surrounds to form a plug body capable of expanding or contracting, the plug body is inserted into the slot structure, and the surface of the plug body is expanded to abut against the surface of the slot structure.

Furthermore, the plug structure also comprises a rigid plug core part, and the plug core part is at least partially arranged in the plug body in a penetrating mode.

Furthermore, the plug structure comprises a rigid plug body which is inserted into the insertion channel and is abutted against the surface of the first elastic piece.

Further, the first elastic element is at least two elastic sheets or a spiral spring, and the axis of the spiral spring is bent on a plane or along a spiral curve, so that the projection of the formed plugging channel on the plane is at least one part of a circle, an ellipse or a polygon.

Further, the second elastic element is at least one elastic sheet or a spiral spring, and the axis of the spiral spring is bent on a plane or along a spiral curve, so that the projection of the formed plug body on the plane is at least one part of a circle, an ellipse or a polygon.

Based on the same inventive concept, a second object of the present invention is to provide a relay, which includes any one of the above conductive contact structures.

In summary, the conductive contact structure and the relay provided by the invention have the following technical effects:

1) the conductive contact head structure changes the direct contact between a conventional fixed contact and a movable contact into: the inner wall of the slot structure can be abutted against the plug structure to conduct electricity, and the normal direction of the abutting surface of the plug structure and the slot structure is not collinear with the direction of the mutual insertion of the elastic end and the slot structure, so that the direction of electric repulsion generated when the static contact and the moving contact conduct electricity is not collinear with the direction of the mutual insertion of the plug structure and the slot structure, the reverse action of the electric repulsion on the plug structure is weakened and is not opposite to the direction of the insertion of the plug structure, therefore, the plug structure is not easy to be separated from the slot structure due to the electric repulsion after being inserted into the slot structure, the slot structure can buffer the insertion impact of the plug structure, protect contacts, and the slot structure can provide elastic pressure, the plug structure and the slot structure are stably connected, and the tightness of the electrical connection between the moving contact and the static contact after the moving contact and the static contact are closed is improved;

2) in one possible implementation mode, the first elastic piece surrounds to form an elastic slot structure, the plug structure is inserted into the slot structure and abuts against the surface of the first elastic piece so as to realize the plug-in connection of the plug structure and the slot structure, and the structure is simple and easy to realize;

3) in one possible implementation mode, the second elastic piece forms an elastic plug structure, so that the plug structure can be inserted into the slot structure, and the slot structure abuts against the surface of the second elastic piece, so that the plug structure is connected with the slot structure in an inserting mode, and the structure is simple and easy to implement;

4) in one possible implementation mode, the slot structure comprises a connecting body with an inserting groove, a first elastic piece is arranged on the inner wall of the inserting groove, the first elastic piece is inserted into the inserting groove through the plug structure, the outer peripheral surface of the plug structure is pressed against the first elastic piece arranged on the inner wall of the inserting groove to realize connection, the electric conduction between the moving contact and the static contact is realized, the connection is stable, the tightness of the electric connection between the moving contact and the static contact after the moving contact and the static contact are closed is favorably improved, electric arcs generated by the plug structure and the elastic contact piece are mainly in the inserting groove, the generation of the electric arcs is favorably reduced, and the outward propagation of the electric arcs is favorably limited;

5) the accommodating groove for installing the elastic contact element is formed in the inserting groove, so that the elastic contact element can be fixedly installed in the accommodating groove, and the assembly is convenient;

6) the relay based on the improved conductive contact structure has the advantages of high stability and strong reliability.

Drawings

FIG. 1 is a schematic diagram of the forces applied during a closing process of a prior art conductive contact structure;

fig. 2 is a schematic three-dimensional structure diagram of a conductive contact structure in embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a first conductive contact structure in embodiment 1 of the present invention;

fig. 4 is a schematic structural diagram of a second conductive contact structure in embodiment 1 of the present invention;

FIG. 5 is a schematic view of the conductive contact structure of FIG. 4 in a closed state;

fig. 6 is a schematic structural diagram of a third conductive contact structure in embodiment 1 of the present invention;

fig. 7 is a schematic structural diagram of a fourth conductive contact structure in embodiment 1 of the present invention;

fig. 8 is a schematic structural diagram of a first conductive contact structure in embodiment 2 of the present invention;

fig. 9 is a schematic diagram illustrating a closed state of the conductive contact structure of fig. 8;

fig. 10 is a schematic structural diagram of a second conductive contact structure in embodiment 2 of the present invention;

fig. 11 is a schematic structural diagram of a third conductive contact structure in embodiment 2 of the present invention;

FIG. 12 is a schematic structural view of a fourth conductive contact structure in example 2 of the present invention;

FIG. 13 is a schematic view showing the structure of a fifth conductive contact structure in example 2 of the present invention;

FIG. 14 is a schematic view showing the structure of a sixth conductive contact structure in example 2 of the present invention;

fig. 15 is a schematic structural diagram of a conductive contact structure in embodiment 3 of the present invention;

fig. 16 is a schematic structural diagram of a conductive contact structure in embodiment 4 of the present invention;

fig. 17 is a schematic structural diagram of a first conductive contact structure according to embodiment 5 of the present invention;

fig. 18 is a schematic structural view of a second conductive contact structure according to embodiment 5 of the present invention;

fig. 19 is a schematic structural diagram of a conductive contact structure in embodiment 6 of the present invention;

fig. 20 is a schematic view of the conductive contact structure of fig. 19 in a closed state;

fig. 21 is a schematic structural diagram of a relay in embodiment 7 of the present invention.

Wherein the reference numerals have the following meanings:

1. a conductive contact structure; 101. static contact; 102. a moving contact; 2. a slot structure; 201. a first elastic member; 202. a plug channel; 3. a plug structure; 301. a plug body; 4. a spring plate; 401. a free end; 4011. an elastic deformation portion; 5. a coil spring; 6. a connecting body; 601. inserting grooves; 602. accommodating grooves; 7. a second elastic member; 701. a plug core; 8. a housing; 801. a base; 802. an upper cover; 9. an armature; 10. fixing the iron core; 1001. abutting against the boss; 11. a coil; 12. a coil holder; 13. a support; 1301. a chute; 14. a magnetically conductive panel; 15. a first flux sleeve; 16. a second flux sleeve; 17. a drive rod; 1701. an insulating sleeve; 18. an over travel spring; 19. a return spring; 20. an upper arc chute; 21. a lower arc chute; 22. and (4) arc blowing magnetic steel.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example 1

Referring to fig. 2 to 7, the invention discloses a conductive contact head structure 1, which comprises a fixed contact 101 and a movable contact 102, wherein the movable contact 102 is movably arranged relative to the fixed contact 101; wherein, one of the static contact 101 and the moving contact 102 is provided with a slot structure 2, the other is provided with a plug structure 3, at least one of the slot structure 2 and the plug structure 3 is an elastic structure, so that the plug structure 3 can be inserted into the slot structure 2, the surfaces of the two are mutually abutted and electrically connected, and the normal directions of the abutting surfaces of the two are not collinear with the directions (for convenience of description, the inserting direction is hereinafter referred to as inserting direction) of the plug structure 3 and the slot structure 2 which are mutually inserted, so that the repulsive force direction generated when the static contact 101 and the moving contact 102 are conductive is not collinear with the inserting direction.

The normal direction of the abutting surface of the plug structure 3 and the slot structure 2 is not collinear with the plugging direction, so that the normal direction of the abutting surface of the plug structure 3 and the slot structure 2 forms an acute angle or a right angle with the plugging direction.

In this embodiment, the normal direction of the abutting surface of the plug structure 3 and the socket structure 2 forms a right angle with the plugging direction.

It should be noted that the abutting surfaces of the plug structure 3 and the socket structure 2 are usually curved surfaces or flat surfaces, and in an extreme case, one of the plug structure 3 and the socket structure 2 may be set as a tip, and at this time, the normal direction of the abutting surfaces of the plug structure 3 and the socket structure 2 is a normal line of the other non-tip flat surface or a contact position of the curved surface and the tip, and one of the plug structure 3 and the socket structure 2 is set as a tip, and the normal direction of the abutting surfaces of the plug structure 3 and the socket structure 2 is not collinear with the plugging direction, which also belongs to the idea of the present invention.

In a possible embodiment, the socket structure 2 is provided as a resilient structure.

Referring to fig. 3 to 7, as a further possible embodiment, the socket structure 2 includes a first elastic member 201, the elastic member forms an empty and contractible or expandable plugging channel 202 around the first elastic member, and the plug structure 3 is inserted into the plugging channel 202 and abuts against a surface of the first elastic member 201; through such an arrangement, the first elastic member 201 surrounds the plug channel 202 which is formed to have elasticity and can be contracted or expanded, the plug structure 3 is inserted into the plug channel 202, and the inner side surface of the plug structure 3, which is opposite to the plug channel 202, is opposite to the surface of the first elastic member 201, so as to realize the connection between the plug structure 3 and the slot structure 2, and the structure is simple and easy to realize.

Referring to fig. 3, in a possible embodiment, the first elastic element 201 is at least two elastic sheets 4, the elastic sheets 4 surround to form the insertion channel 202, and the elastic sheets 4 may be in a straight plate shape or an arc shape, so that the insertion channel 202 formed by surrounding of the elastic sheets 4 may be in a hollow prism/cylinder shape, a cone/frustum shape, a circular truncated cone/frustum shape, and the inner side surface of the formed cone/frustum shape or circular truncated cone/frustum shape insertion channel 202 may be an arc surface.

Referring to fig. 4 to 7, in a possible embodiment, the first elastic element 201 may also be configured as a coil spring 5, and an axis of the coil spring 5 is bent on a plane or along a spiral curve, so that a projection of the insertion channel 202 formed by the coil spring on a plane is at least a part of a circle, an ellipse, or a polygon.

For example, the coil springs 5 may be connected end to end, one side of the coil springs 5 is fixed to the movable contact or the fixed contact, and the axes of the coil springs 5 are bent on a plane to form a circle, so as to form a circular insertion channel 202 in the middle, and the plug structure 3 is inserted into the circular insertion channel 202 surrounded by the coil springs 5, and abuts against the surface of one side of the coil springs 5 in the direction of the center of the insertion channel 202 to be electrically connected.

Of course, the elastic sheet 4 or the coil spring 5 should be made of a conductive material, such as a metal sheet or a metal alloy sheet, e.g., a copper sheet, an aluminum sheet, a stainless steel sheet, etc.

In this embodiment, the plug structure 3 is a rigid plug body 301, the plug body 301 is inserted into the insertion channel 202 surrounded by the first elastic element 201, and the outer surface of the plug body 301 abuts against the inner side surface of the insertion channel 202 and is electrically connected to the inner side surface, that is, abuts against the surface of the first elastic element 201.

In one possible embodiment, a first riveting hole (not labeled in the figure) is formed in the movable contact 102 or the fixed contact 101, and the plug body 301 is connected in the first riveting hole and is riveted and fixed with the movable contact 102; the plug structure 3 is fixed in a riveting mode, on one hand, the plug body 301 is enabled to be connected with the moving contact 102 or the static contact 101 more stably in the mode, and the situation that the plug body 301 shakes with the static contact 101 in the repeated contact process is reduced; on the other hand, the plug body 301 is convenient to process, and the plug body 301 is not limited to be consistent with the movable contact 102 due to the riveting connection, and the material of the plug body 301 can be selected, for example, the material with impact resistance and high temperature corrosion resistance is selected, so that the plug body has impact resistance and corrosion resistance, and the service life of the whole conductive contact structure 1 is prolonged.

In other possible embodiments, the plug body 301 may also be integrally formed with the movable contact 102, for example, the plug body 301 may be formed on the movable contact 102 by casting, or the plug body 301 may be formed on the movable contact 102 by stamping.

Referring to fig. 2 to 7, a plug structure 3 and a slot structure 2 are arranged in a group, and as a possible implementation, at least two groups of the plug structure 3 and the slot structure 2 are arranged.

Referring to fig. 3 to 5, in a possible embodiment, two sets of the plug structures 3 and the slot structures 2 are provided, and the two slot structures 2 are both disposed on the stationary contact 101, and the two plug structures 3 are both disposed on the movable contact 102.

Referring to fig. 6, in a possible implementation, it may be further configured to: the two slot structures 2 are both arranged on the moving contact 102, and the two plug structures 3 are both arranged on the fixed contact 101.

Referring to fig. 7, in another possible embodiment, the plug structures 3 and the socket structures 2 are alternately arranged on the movable contact 102 and the stationary contact 101, that is, one plug structure 3 of the two plug structures 3 is arranged on the stationary contact 101, and the other plug structure is arranged on the movable contact 102; one of the two slot structures 2 corresponding to the two plug structures 3 is disposed on the movable contact 102, and the other is disposed on the stationary contact 101.

The working process and principle of the invention are as follows:

referring to fig. 5, when the movable contact 102 and the movable contact 102 are closed, the movable contact 102 moves or swings close to the movable contact 102 under the driving of an external force, so that the plug structure 3 is inserted into the slot structure 2 along the G direction, in the process that the plug structure 3 is inserted into the slot structure 2, the inner wall of the slot structure 2 is pressed by the plug structure 3 to deform and expand, in the process of the contact, the direction of the electric repulsion force generated by electric conduction is mainly along the normal direction of the contact surface of the plug structure 3 and the slot structure 2, and the direction is not collinear with the direction in which the plug structure is inserted into the slot structure 2, thereby weakening the influence of the electric repulsion force on the mutual insertion of the plug structure and the slot structure, after the plug structure 3 is inserted into the slot structure 2, the slot structure 2 recovers to shrink, and finally, the outer surface of the plug structure 3 is abutted against the inner wall of the slot structure 2 to keep electric communication.

The principle of the present invention for attenuating electrodynamic repulsion is described in detail as follows: the electric repulsion is generated when the plug structure 3 is contacted with the first elastic piece 201 for conducting electricity, and the electric repulsion acts on the plug structure 3 as a force F 'which is mainly along the normal direction of the abutting surface of the plug structure 3 and the first elastic piece 201 and is not collinear with the plugging direction G from the angle analysis of the plug structure 3, and as shown in the figure, the force F' is perpendicular to the direction G of the plug structure 3 inserted into the slot structure 2, so that the influence of the electric repulsion on plugging is minimum, therefore, the scheme of the invention is different from the direct front contact of the moving contact and the static contact 101 in the prior art, the direction of the electric repulsion is changed, the direction of the electric repulsion received by the plug structure 3 is perpendicular to the plugging direction, the phenomenon that the plug structure 3 is popped out of the slot structure 2 due to the generation of the electric repulsion is avoided, the contact obstacle is caused, and the contact stability is improved.

From the angle of the slot structure 2, the first elastic member 201 receives an electric repulsive force opposite to the direction F', when the plug structure 3 contacts the surface of the first elastic member 201, due to the existence of the electric repulsive force, the first elastic member 201 is further deformed, so that the plugging obstruction of the plug structure 3 is reduced, and the plug structure 3 can be conveniently inserted into the slot structure 2.

After the plug structure 3 is inserted in place, since the slot structure 2 recovers, that is, the first elastic member 201 recovers elastic deformation to generate elastic acting force on the plug structure 3, the elastic acting force has a holding effect on the plug structure, so that the plug structure 3 is tightly connected with the slot structure 2, and the improvement of the stability and reliability of the electrical connection between the movable contact 102 and the fixed contact 101 is facilitated.

Example 2

The present embodiment discloses another conductive contact structure 1, which is based on embodiment 2 and differs from embodiment 2 only in that:

referring to fig. 8 to 14, the slot structure 2 further includes a rigid connection body 6, the connection body 6 is provided with an insertion groove 601, the first elastic element 201 is disposed on an inner wall of the insertion groove 601, the first elastic element 201 is disposed in the insertion groove 601 of the connection body 6, which is beneficial to limiting the first elastic element 201, so that the first elastic element 201 is excessively expanded and deformed outwards to interfere with other components, and an electric arc possibly generated when the plug structure 3 contacts the first elastic element 201 is limited in the insertion groove 601, thereby avoiding the electric arc floating outwards to affect other components.

As a possible embodiment, the inner wall of the insertion groove 601 is provided with a receiving groove 602, the first elastic element 201 is installed in the receiving groove 602, and the surface of the first elastic element protrudes out of the receiving groove 602; the purpose of setting up holding tank 602 makes things convenient for the installation of first elastic component 201, can accomplish the installation, and is swift convenient with first elastic component 201 joint in holding tank 602.

As a possible implementation, the accommodating groove 602 is opened in a direction perpendicular to the insertion groove 601; based on the installation of first elastic component 201 and the structural design demand that is difficult for droing, the holding tank 602 of seting up perpendicularly can reduce the processing degree of difficulty.

Referring to fig. 8, further, as a preferred scheme, the height H of the plug structure 3 is less than the depth H of the plugging groove 601; the purpose of the arrangement is to prevent the moving contact 102 from being damaged by the plug structure 3, and to prevent the moving contact 102 and the fixed contact 101 from being affected by the electric repulsion force generated by the direct contact between the plug structure 3 and the bottom of the inserting groove 601.

In a possible embodiment, the connecting body 6 can be formed integrally with the movable contact 102 or with the stationary contact 101.

In a possible implementation manner, the connecting body 6 may further be connected to the moving contact 102 or the fixed contact 101 in a riveting manner, for example, a second riveting hole is formed in the moving contact 102 or the fixed contact 101, and the connecting body 6 passes through the second riveting hole to fixedly connect the connecting body 6 and the moving contact 102 or the fixed contact 101.

Referring to fig. 12 to 14, when the first elastic element 201 is configured as the elastic sheet 4, at least one end of the elastic sheet 4 is fixed to the stationary contact 101.

Referring to fig. 12, in a possible embodiment, one end of the elastic sheet 4 is fixed to the inner wall of the insertion groove 601, and the other end is a free end 401, and the free end 401 has an arched elastic deformation portion 4011; therefore, the plug structure 3 is inserted into the insertion groove 601, and the outer peripheral surface of the plug structure 3 contacts and presses against the elastic deformation portion 4011, so that the elastic contact piece is elastically deformed.

By adopting the structure, the structure is simpler, and the manufacturing cost is lower.

Referring to fig. 13, in another possible embodiment, the flexible arc portion on the free end 401 is in the shape of a straight plate.

Referring to fig. 14, in yet another possible embodiment, an arched elastic deformation portion 4011 is disposed in the middle of the elastic sheet 4, two ends of the elastic sheet 4 are fixed to the insertion groove 601, the plug structure 3 is inserted into the insertion groove 601, and the outer peripheral surface of the plug structure 3 contacts and presses against the elastic deformation portion 4011, so that the elastic contact piece is elastically deformed.

Further, the elastically deforming portion 4011 has an arc shape.

Elastic deformation portion 4011's structural setting can reduce the possibility that shell fragment 4 protected plug structure 3 to plug structure 3 surface fish tail.

Furthermore, in order to balance the stress on the plug structure 3, the elastic pieces 4 are arranged in pairs, and the paired elastic pieces 4 are symmetrically arranged on two sides of the center line of the inserting groove 601.

The working process and principle of the invention are as follows:

similar to the embodiment, when the movable contact 102 and the movable contact 102 are closed, the movable contact 102 moves or swings close to the movable contact 102 under the driving of an external force, so that the plug structure 3 is plugged into the plugging groove 601 along the G direction, the direction of the electric repulsion force is changed to weaken the influence on the plugging process, the plug structure 3 is prevented from being popped out of the plugging groove 601 due to the generation of the electric repulsion force, the contact stability is improved, the embodiment is different from the embodiment in that, when the plug structure 3 is inserted into the plug channel 202 surrounded by the first elastic member 201 and presses the first elastic member 201 to deform and expand the plug channel 202, the deformation range of the first elastic member 201 is limited by the inner wall of the receiving groove 602, so that the first elastic member 201 is prevented from being excessively deformed, moreover, the electric arc which may be generated when the plug structure 3 contacts the first elastic member 201 is mainly in the plugging groove 601, which is beneficial to reducing the generation of the electric arc and limiting the outward propagation of the electric arc.

Example 3

The present embodiment discloses another conductive contact structure 1, and based on embodiment 1 or embodiment 2, the present embodiment is different from embodiment 1 or embodiment 2 in that:

referring to fig. 15, in the embodiment, the plug structure 3 is an elastic structure, the slot structure 2 is a rigid structure, the slot structure 2 includes a rigid connection body 6, and the connection body 6 is provided with an insertion groove 601 for inserting the plug structure 3.

Therefore, the plug structure 3 of the present embodiment is inserted into the insertion groove 601, and the plug structure 3 deforms to enable the plug structure 3 to be inserted into the slot structure 2 and to abut against the inner wall thereof for electrical communication.

As a possible embodiment, the plug structure 3 includes the second elastic element 7, the second elastic element 7 encloses a plug body 301 capable of expanding or contracting, the plug body 301 is inserted into the socket structure 2, and the surface of the plug body 301 expands to abut against the surface of the socket structure 2.

When the external force is removed, the surface of the plug body 301 can expand outward away from the center, so that the volume of the plug body 301 is increased.

In one possible embodiment, the second elastic element 7 is at least one elastic sheet 4, for example, the second elastic element 7 is a single elastic sheet 4, the single elastic sheet 4 forms the plug body 301, one end of the plug body 301 is connected to the movable contact 102 or the fixed contact 101, and the other end of the plug body is a free end 401 that can swing under pressure, so that the plug body 301 can enter the slot structure 2, and after the plug body 301 is inserted into the slot structure 2, the elastic sheet 4 returns to elastically deform to abut against the surface of the slot structure 2.

The second elastic element 7 is preferably provided with at least two elastic sheets 4, each elastic sheet 4 may be in a straight plate shape or an arc shape, so that the plug body 301 formed by enclosing the elastic sheets 4 may be in a hollow prism/cylinder shape, a circular cone/truncated pyramid shape or a circular truncated cone/truncated pyramid shape, and the outer side surface of the formed circular cone/truncated pyramid-shaped or circular truncated cone/truncated pyramid-shaped plugging channel 202 may be an arc surface.

Certainly, the plurality of spring plates 4 may be at least partially integrally formed, and the plug body 301 formed by enclosing may be provided with a deformation groove, so that the portion of the plug body 301 inserted into the slot structure 2 may be expanded or contracted.

In a possible embodiment, the front end of the plug structure 3 may be provided with a right angle or an arc chamfer, the plug structure 3 is inserted into the slot structure 2, the outer circumferential surface of the plug structure 3 is parallel to the direction in which the plug structure 3 is inserted into the insertion groove 601, the insertion groove 601 is a blind groove or a through groove, the inner wall shape of the insertion groove is matched with the shape of the plug structure 3, when the insertion groove 601 is a blind groove, the plug structure 3 is inserted into the insertion groove 601, a gap exists between the end surface of the plug structure 3 and the bottom of the insertion groove 601, the first elastic member 201 is abutted against the outer circumferential surface of the plug structure 3, and the damage of both sides caused by the collision between the plug structure 3 and the bottom of the insertion groove 601 is avoided.

In a possible embodiment, the second elastic element 7 is a coil spring 5 (not shown), and the axis of the coil spring 5 is bent on a plane or along a spiral curve, so that the projection of the plug channel 202 formed by the coil spring on a plane is at least a part of a circle, an ellipse or a polygon.

For example, the spiral spring 5 may be connected end to end, so that the axis of the spiral spring is bent on a plane to form a circle, the plug body 301 with a circular avoidance space in the middle is formed, the plug body 301 is inserted into the slot structure 2, the spiral spring 5 is pressed to contract and deform in the direction of the circle center until the plug body 301 is completely inserted into the slot structure 2, the spiral spring 5 expands outwards, and the surface of one side of the spiral deviating from the direction of the circle center of the avoidance space is abutted against the surface of the slot and is electrically communicated with the surface of the slot.

Example 4

The present embodiment discloses another conductive contact structure 1, and based on embodiment 3, the present embodiment is different from embodiment 3 in that:

referring to fig. 16, the plug structure 3 further includes a rigid plug core 701, the plug core 701 is at least partially inserted into the plug body 301 formed by the second elastic member 7, i.e., the plug core 701 can be disposed in the plug body 301 or partially penetrate out of the plug body 301; through the arrangement, the plug core part 701 has the function of a main arbor, the whole plug structure 3 is improved, the deformation range of the second elastic part 7 is limited, the second elastic part 7 is not excessively deformed, and the phenomenon that the second elastic part 7 is permanently damaged and loses elasticity due to the fact that the second elastic part 7 is excessively deformed is avoided.

In one possible implementation, a third riveting hole (not labeled in the drawings) is formed in the movable contact 102 or the fixed contact 101, and the plug core 701 is connected in the third riveting hole and is riveted and fixed with the movable contact 102 or the fixed contact 101;

in other possible embodiments, the plug core 701 may also be integrally formed with the movable contact 102 or the stationary contact 101, for example, the plug core 701 may be formed on the movable contact 102 or the stationary contact 101 by casting, or the plug core 701 may be formed on the movable contact 102 or the stationary contact 101 by stamping.

Example 5

The present embodiment discloses another conductive contact structure 1, and based on the embodiments or embodiments, the present embodiment is different from the embodiments or embodiments in that:

referring to fig. 17 to 18, the slot structure 2 of the present embodiment is replaced by the elastic slot structure 2 of the present embodiment, or a combination of the rigid slot structure 2 and the elastic slot structure 2 of the present embodiment is used.

The advantage that sets up like this lies in, plug structure 3 and slot structure 2 all set up to when having elasticity, can further alleviate the contact impact for both peg graft more smoothly, are favorable to realizing the quick closure of static contact 101 and moving contact 102, reduce the damage that the rigid contact caused, play better guard action, prolong the life of conductive contact structure 1.

Example 6

Referring to fig. 19 and fig. 20, the present embodiment discloses another conductive contact structure 1, and based on the above embodiments, the present embodiment is different from the above embodiments only in that:

the normal direction of the butt joint surface of the plug structure 3 and the slot structure 2 forms an acute angle with the plugging direction, and the included angle a formed by the normal direction of the butt joint surface of the plug structure 3 and the slot structure 2 and the plugging direction is an acute angle.

In a possible embodiment, the portion of the plug structure 3 inserted into the socket structure 2 is conical, the outer circumferential surface of the plug structure 3 forms an angle b with the direction G of insertion of the plug structure 3 into the socket structure 2, b being the complementary angle of a.

In other possible embodiments, the plug structure 3 may also be a polygonal pyramid, such as a triangular pyramid, a rectangular pyramid, etc.

In a possible embodiment, the slot structure 2 is opened along a direction forming an included angle b with a direction G of the plug structure 3 plugged into the slot structure 2, and the receiving groove 602 is opened along a direction perpendicular to the direction G of the plug structure 3 plugged into the slot structure 2.

The working process and principle of the embodiment of the invention are as follows:

referring to fig. 20, the difference from the other embodiments is that when the plug structure 3 is plugged into and electrically connected to the socket structure 2, the generated electric repulsive force acts on the plug structure 3 at an angle a between the plugging direction G and the direction of the plug, i.e. F in the figure, orthogonally decomposes this FO into a component force F perpendicular to the plugging direction and a component force F parallel to the plugging direction, because of the component force F, the effect of the electric repulsion opposing the plugging direction is weakened, namely, the separation F is reduced, and the larger the included angle a is, the more obvious the component force F is weakened, so that the scheme of the invention changes the direction of the electric repulsion force, weakens the reverse action of the electric repulsion force on the plug structure 3, reduces the possibility that the plug structure 3 is popped out of the slot structure 2 due to the generation of the electric repulsion force, and improves the contact stability, which is different from the direct front contact of the movable contact 101 and the fixed contact 101 in the prior art.

Example 7

Referring to fig. 21, the present embodiment discloses a relay, which includes a housing 8, and the conductive contact structure 1 according to any one of the above embodiments is disposed in the housing 8.

Further, in this embodiment, the housing 8 includes a base 801 and an upper cover 802, the upper cover 802 is connected to the base 801, and a containing cavity (not labeled in the figure) is formed in the upper cover 802 and the base 801, the relay further includes an armature 9 disposed in the containing cavity, a fixed iron core 10, and a coil 11, wherein the coil 11 is wound on a coil 11 seat, a non-magnetic bracket 13 is disposed at the center of the coil 11 seat, a sliding slot 1301 for the armature 9 to slide is disposed in the bracket 13, an opening (not labeled in the figure) communicated with the sliding slot 1301 is disposed at one end of the bracket 13, the opening is disposed vertically upward, the fixed iron core 10 is columnar and fixed at the opening of the bracket 13, and is fixed with the upper end of the coil 11 seat through a magnetic panel 14.

The bracket 13 is externally sleeved with a first magnetic conductive sleeve 15 which is magnetic conductive, the bottom of the coil 11 seat is connected with a second magnetic conductive sleeve 16, one end of the second magnetic conductive sleeve 16 extends from the edge to the center from the horizontal direction to be connected with the first magnetic conductive sleeve 15, and the other end extends upwards from the bottom to the top to be connected with the magnetic conductive panel 14, so that the first magnetic conductive sleeve 15, the second magnetic conductive sleeve 16 and the magnetic conductive panel 14 form a continuous magnetic loop.

A through hole (not labeled in the figure) is opened in the center of the fixed iron core 10, a driving rod 17 is slidably inserted in the through hole, the armature 9 is also cylindrical and fixed with one end of the driving rod 17, and the other end of the driving rod 17 is provided with a movable contact 102 in the conductive contact structure 1.

An overtravel spring 18 and a return spring 19 are further sleeved on the driving rod 17, wherein the movable contact 102 is slidably arranged on the driving rod 17, an insulating sleeve 1701 is fixed on the driving rod 17, the insulating sleeve 1701 slides along the through hole, one end of the overtravel spring 18 abuts against the end part of the insulating sleeve 1701, and the other end of the overtravel spring abuts against the movable contact 102 in the conductive contact structure 1.

The inner wall of the fixed iron core 10 is further provided with an abutment boss 1001, and one end of the return spring 19 abuts against the abutment boss 1001 and the other end abuts against the armature 9.

The fixed contact 101 is fixed to the upper cover 802, wherein an upper arc-extinguishing chamber 20 is further embedded and clamped inside the upper cover 802, a lower arc-extinguishing chamber 21 is further disposed between the lower end of the upper arc-extinguishing chamber 20 and the magnetic conductive faceplate 14, and a sealed arc-extinguishing chamber (not labeled in the figure) is formed by butt-joint between the upper arc-extinguishing chamber 20 and the lower arc-extinguishing chamber 21.

The upper arc-extinguishing cover 20 is provided with a clamping hole (not marked in the figure) for connecting the static contact 101, the static contact 101 is fixed by the top of the upper cover 802 penetrating through the clamping hole and extends into the arc-extinguishing chamber, and the slot structure 2 is arranged opposite to the plug structure 3.

And arc-blowing magnetic steels 22 are also arranged on two sides of the arc-extinguishing cavity, and the arc-blowing magnetic steels 22 are fixed on the upper cover 802.

The working principle and the process of the embodiment of the invention are as follows:

when the coil 11 is powered on, the coil 11 generates magnetic force to magnetize the fixed iron core 10, and since the magnetic circuit tends to be in a closed state, the fixed iron core 10 attracts the armature 9 to move upwards until the magnetic circuit is closed, that is, the armature 9, the fixed iron core 10, the first flux sleeve 15, the second flux sleeve 16 and the magnetic conductive panel 14 form a closed magnetic circuit, so that the movable contact 102 moves towards the direction close to the fixed contact 101, by adopting the conductive contact head structure 1 of the above-mentioned embodiment, the movable contact 102 and the fixed contact 101 are stably connected, and the generated electric arc is less and is mainly located in the slot structure 2, and external current flows from the fixed contact 101 on one side, passes through the movable contact 102, and then flows out from the fixed contact 101 on the other side.

After the moving contact 102 is connected with the fixed contact 101, the driving rod 17 continues to move forward for a certain distance, so that the over travel spring 18 is pressed, and the over travel spring 18 generates elastic force to press the moving contact 102, so that the moving contact 102 and the fixed contact 101 are kept stably closed.

After the coil 11 loses power, the return spring 19 applies a return elastic force to the armature 9, so that the armature 9 moves in a direction away from the fixed iron core 10 until the movable contact 102 is separated from the fixed contact 101.

In summary, the conductive contact structure 1 and the relay provided by the invention weaken the influence of the electric repulsion on the closing of the moving contact 101 and the static contact 101, and improve the tightness of the electrical connection between the moving contact 102 and the static contact 101 after the closing, so that the conductive contact structure 1 is stable in the closing state, and the stability and the reliability of the relay are improved.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims (11)

1. A conductive contact structure, comprising:

a static contact (101); and

a movable contact (102) movably arranged relative to the fixed contact (101);

one of the static contact (101) and the moving contact (102) is provided with a conductive slot structure (2), the other is provided with a conductive plug structure (3), at least one of the slot structure (2) and the plug structure (3) is an elastic structure, so that the surfaces of the plug structure (3) and the slot structure (2) can be abutted and electrically communicated after being spliced, and the normal direction of the abutting surface is not collinear with the splicing direction of the plug structure (2).

2. The electrical contact structure of claim 1, wherein the socket structure (2) comprises a first resilient member (201), the first resilient member (201) defining a hollow and collapsible or expandable plug channel (202), the plug structure (3) being inserted into the plug channel (202) and abutting a surface of the first resilient member (201).

3. The electrical contact structure of claim 2, wherein the socket structure (2) further comprises a rigid connection body (6), the connection body (6) is provided with a socket groove (601), and the first elastic member (201) is disposed on an inner wall of the socket groove (601).

4. The electrical contact structure of claim 3, wherein the inner wall of the insertion groove (601) is provided with a receiving groove (602), and the first elastic member (201) is installed in the receiving groove (602) and its surface protrudes out of the receiving groove (602).

5. The electrical contact structure of claim 1, wherein the plug structure (3) is an elastic structure, the socket structure (2) further comprises a rigid connection body (6), and the connection body (6) is provided with an insertion groove (601) for inserting the plug structure (3).

6. The electrical contact structure according to any of claims 1 to 5, wherein the plug structure (3) comprises a second resilient member (7), the second resilient member (7) defining an expandable or contractible plug body (301), the plug body (301) being inserted into the socket structure (2) with its surface expanded against the surface of the socket structure (2).

7. The electrically conductive contact structure of claim 6, characterized in that the plug structure (3) further comprises a rigid plug core (701), the plug core (701) being at least partially arranged through the plug body (301).

8. The electrically conductive contact structure according to any of claims 2 to 4, characterized in that the plug structure (3) comprises a rigid plug body (301), the plug body (301) being plugged into the plugging channel (202) and abutting a surface of the first resilient member (201).

9. The electrical contact structure of any of claims 2 to 4, wherein the first elastic element (201) is at least two elastic sheets (4) or a coil spring (5), and an axis of the coil spring (5) is bent on a plane or along a spiral curve, so that a projection of the plugging channel (202) formed by the coil spring on a plane is at least a part of a circle, an ellipse or a polygon.

10. The structure of claim 6, wherein the second elastic element (7) is at least one spring (4) or a coil spring (5), and an axis of the coil spring (5) is bent on a plane or along a spiral curve, so that a projection of the plug body (301) formed by the coil spring on a plane is at least a part of a circle, an ellipse or a polygon.

11. A relay, comprising a conductive contact structure according to any of claims 1-10.

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