CN216624118U - Relay - Google Patents

Abstract

The utility model discloses a relay, which relates to the technical field of electric switches and comprises a bracket, a reed, a stationary contact, a coil, an armature, a movable contact, a yoke and an iron core, wherein one end of the iron core is provided with a limiting end, and the other end of the iron core is provided with a riveting end; the yoke, the stationary contact and the coil are all fixed with the bracket, and the reed is connected with the armature and one end of the yoke, so that the armature can swing relative to the yoke and is abutted against the limiting end; the moving contact is arranged on the spring and is closed or separated from the static contact along with the swing of the armature; the bracket is provided with a through hole for the iron core to penetrate through, and the yoke iron is provided with a riveting hole for the matching of the riveting end corresponding to the through hole; the surface of the armature against the limiting end or the back surface thereof is extruded to form a reinforcing groove. The manufacturing error of the armature tracking parameter of the relay of the embodiment is small, the manufacturing precision of the relay is high, and the product quality is good.

Description

Relay

Technical Field

The utility model relates to the technical field of electric switches, in particular to a relay.

Background

At present, a relay commonly used in the prior art generally includes a magnetic circuit component and a contact component, wherein the magnetic circuit component includes an armature, a yoke, an iron core, a coil support and a coil, and the iron core penetrates through the support and then is riveted and fixed.

At present, there is a device specially used for assembling iron core of relay in the prior art, for example, chinese patent with application number 201410045834.4 discloses an electromagnetic relay and its manufacturing method, first step, pre-riveting: pressing a frustum at the tail end of the iron core into a corresponding riveting hole on the yoke, stopping pressing when the end surface of the iron core is flush with the end surface of the yoke, and performing interference assembly on the iron core and the riveting hole; secondly, a pressing power source drives a pressing head to press downwards, a displacement sensor is arranged on the pressing head, and the pressing head moves downwards and pushes a reed, an armature and a movable contact to move synchronously; thirdly, when the movable contact is in contact with the fixed contact, the displacement sensor starts to measure the over travel distance; fourthly, the pressure head continues to move downwards until the armature contacts with the end face of the iron core, and the designed over travel D is measured; fifthly, the pressure head continues to move downwards, and when the moving distance is riveting overtravel C, namely C + D is equal to the designed overtravel of the relay, the pressure head stops pressing and moving; and sixthly, riveting a frustum extending out of the yoke iron on the yoke iron by a stamping power source at the other end of the iron core.

The design overtravel of the relay is also called as armature tracking in the field, the armature tracking is an important mechanical parameter in a relay product, the above assembling mode is adopted, in the steps from the second step to the sixth step, the pressure head applies pressure to the armature, so that the armature is pressed against the iron core, the conventional armature is easy to generate a pit under the pressing of the pressure head, and the displacement sensor measures the displacement of the pressure head, so that the armature tracking parameter of the relay after actual riveting generates a larger manufacturing error when the armature deforms due to pressing.

Therefore, improvement in the structure of the relay is required.

SUMMERY OF THE UTILITY MODEL

In order to overcome at least one of the defects of the prior art, the utility model provides a relay, which is used for optimizing the defect that the manufacturing error of the 'armature tracking' parameter of the prior relay after assembly is larger.

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

according to one aspect of the utility model, the utility model provides a relay, which comprises a bracket, a reed, a fixed contact, a coil, an armature, a movable contact, a yoke and an iron core, wherein one end of the iron core is provided with a limiting end, and the other end of the iron core is provided with a riveting end; the yoke iron, the stationary contact and the coil are all fixed with the bracket, and the reed is connected with the armature and one end of the yoke iron, so that the armature can swing relative to the yoke iron and is abutted against the limit end; the movable contact is arranged on the spring and is closed or separated from the fixed contact along with the swing of the armature; the bracket is provided with a through hole for the iron core to penetrate through, and the yoke iron is provided with a riveting hole for the matching of the riveting end corresponding to the through hole; the surface of the armature abutting against the limiting end or the back surface thereof is extruded to form a reinforcing groove.

Therefore, before the iron core is assembled, the surface or the back surface of the armature abutting against the limiting end of the iron core is extruded to form the reinforcing groove, so that the rigidity of the abutting position of the iron core and the limiting end of the iron core is enhanced, the deformation of the armature under the action of external force is reduced in the process of assembling the iron core, the manufacturing error of the armature tracking parameter of the electric appliance after the assembly is reduced, the manufacturing precision is improved, and the product quality is improved.

Further, the reinforcing groove is an arc-shaped groove.

From this, strengthen the recess and can be the arc recess, the arc recess can have pertinence to strengthen the rigidity of arc point position part, plays the concentrated effect that strengthens rigidity for the rigidity improvement effect of armature in the position department with the spacing end butt of iron core is obvious.

Further, the reinforcing groove is a planar groove.

Therefore, the reinforcing groove can be a plane groove, and in the process of forming the reinforcing groove by extruding the armature, the plane groove can uniformly enhance the rigidity of the armature at the abutting position of the inner end of the iron core, so that the rigidity of the armature is enhanced in a larger range and is less prone to deformation caused by abutting.

Furthermore, a pressing convex edge is arranged on one side of the support towards the limiting end around the circumferential direction of the through hole, and the pressing convex edge keeps a deformation interval with the surface of the support.

From this, support and the spacing end's of iron core contact can be replaced to the setting on pressing protruding edge for the spacing end of iron core is pressed when sinking towards the direction of embedding support, replaces the deformation of support through the deformation that supports pressing protruding edge, avoids the excessive sunken damage even of support, and then avoids appearing the iron core phenomenon of sinking in follow-up measurement and various environment use after leading to the relay equipment because the damage of support.

Furthermore, the abutting convex edge is a circular strip or at least two arc-shaped strips which are uniformly distributed around the center of the through hole.

Therefore, the abutting convex edge can be a complete circular strip, at least two arc-shaped strips uniformly distributed around the center of the through hole can be further arranged, and flexible selection can be considered according to the actual processing requirements, precision, cost and the like.

Furthermore, the abutting convex edge is provided with at least two circles around the center of the through hole.

Therefore, the arrangement of the at least two circles of abutting convex edges can increase the reliability of the abutting convex edges for bearing the limiting end of the iron core, so that the purpose of reducing the deformation of the support is achieved.

Further, the spacing between the abutting convex edge of each circle and the surface of the bracket is equal.

Therefore, the limiting end of the iron core can be simultaneously contacted with the abutting convex edges of the rings, and the abutting convex edges of the rings jointly support the limiting end of the iron core.

Further, along the direction of keeping away from the through-hole center, the protruding edge of each ring of suppression is increment or decrement along the interval to the support surface.

Therefore, when the limiting end of the iron core is close to the support, the pressing process of the limiting convex edge has certain layering, namely the limiting convex edge is firstly pressed against the pressing convex edge with larger distance to the surface of the support, and can be gradually pressed against the pressing convex edge with smaller distance to the surface of the support, so that the resistance of pressing and moving in the assembling process of the limiting end can be reduced, and the assembly is convenient.

Furthermore, the support is provided with chip flutes on one side or both sides of the abutting convex edge.

Therefore, when the abutting convex edge is damaged to generate fragments due to abutting of the limiting end, the chip groove can receive and contain the fragments, and the phenomenon that the fragments enter the through hole or move on the surface of the support is avoided.

Further, the riveting end is towards the direction of spacing end, and the iron core is straight cylindric, and perhaps the iron core is the toper, and leans on the size of one side of spacing end to be greater than the size of leaning on riveting end one side.

From this, adopt the iron core of straight tube formula to simplify manufacturing procedure, adopt to be the iron core of toper and can be convenient for the iron core and wear to establish in the through-hole, convenient equipment.

According to the technical scheme, the embodiment of the utility model at least has the following advantages and positive effects:

1) the armature is extruded to form a reinforcing groove, so that the rigidity of the position where the armature is abutted to the limiting end of the iron core is enhanced, the deformation of the armature is reduced, the manufacturing error of the armature tracking parameter of the electric appliance after assembly is further reduced, the manufacturing precision is improved, and the product quality is improved;

2) the support is further provided with the abutting convex edge to replace the deformation of the support abutting against the limiting end, so that the phenomenon that an iron core sinks in the subsequent measurement and use processes in various environments after the relay is assembled due to the damage of the support is avoided, and the manufacturing precision of the relay is further improved.

Drawings

FIG. 1 is a schematic diagram of an external structure of a relay according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an internal structure of a relay according to an embodiment of the present invention;

FIG. 3 is a schematic view of the construction of an armature according to one embodiment of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of a relay with a protective cover removed according to an embodiment of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a top view of a relay in one embodiment of the present invention;

FIG. 7 is a longitudinal cross-sectional view of a stent according to one embodiment of the present invention;

FIG. 8 is a schematic diagram of a partial structure of a core according to an embodiment of the present invention;

fig. 9 is a schematic diagram of the force applied to the armature during the assembly of the core in the prior art;

fig. 10 is a diagram illustrating the forces exerted on the armature during assembly of the core according to an embodiment of the present invention.

Wherein the reference numerals have the following meanings:

1. a support; 101. a through hole; 102. pressing the convex edge; 103. a chip pocket; 2. a reed; 3. a stationary contact; 4. a coil; 5. an armature; 501. reinforcing the grooves; 6. a movable contact; 7. a yoke; 701. riveting holes; 702. a first arm; 703. a second arm; 8. an iron core; 801. a limiting end; 802. riveting the end; 9. a protective cover; 10. a base; 11. abutting against the projection.

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 utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Examples

Referring to fig. 2 and 4, the utility model discloses a relay, which comprises a bracket 1, a reed 2, a stationary contact 3, a coil 4, an armature 5, a movable contact 6, a yoke 7 and an iron core 8, wherein one end of the iron core 8 is provided with a limit end 801, and the other end is provided with a riveting end 802; the yoke iron 7, the stationary contact 3 and the coil 4 are all fixed with the bracket 1, and the reed 2 is connected with the armature 5 and one end of the yoke iron 7, so that the armature 5 can swing relative to the yoke iron 7 and is abutted against the limit end 801; the movable contact 6 is arranged on the reed 2 and is closed or separated from the fixed contact 3 along with the swing of the armature 5; the bracket 1 is provided with a through hole 101 for the iron core 8 to penetrate through, and the yoke 7 is provided with a riveting hole 701 corresponding to the through hole 101 for the riveting end 802 to be matched with; the yoke 7 is L-shaped, and includes a first arm 702 and a second arm 703 perpendicular to the first arm 702, the spring plate 2 is fixed to the first arm 702, and the riveting hole 701 is opened on the second arm 703.

The surface of the armature 5 abutting against the limit end 801 or the back surface thereof is pressed to form a reinforcing groove 501.

Therefore, before the iron core 8 is assembled, the reinforcing groove 501 is formed on the surface or the back surface of the armature 5 abutting against the limiting end 801 of the iron core 8 in an extruding mode, therefore, the rigidity of the abutting position of the iron core 8 and the limiting end 801 of the iron core 8 is enhanced, and the deformation of the armature 5 under the action of external force is reduced in the process of assembling the iron core 8, so that the manufacturing error of the armature tracking parameter of an electric appliance after the assembly is reduced, the manufacturing precision is improved, and the product quality is improved.

Referring to fig. 1, a protective cover 9 is fixedly covered outside the bracket 1, so that the bracket 1, the spring piece 2, the stationary contact 3, the coil 4, the armature 5, the movable contact 6, the yoke 7 and the iron core 8 are all located in a cavity in the protective cover 9.

Referring to fig. 2 and 4, the bracket 1 is fixed on a base 10, and the protective cover 9 is fixed on the base 10.

Referring to fig. 3 and 4, in the present embodiment, the armature 5 is pressed by a surface of the armature 5 away from the limit end 801, so that the reinforcing groove 501 is located on a back surface of the armature 5 abutting against the limit end 801.

In some possible embodiments, the reinforcing groove 501 is an arc-shaped groove.

Therefore, the reinforcing groove 501 can be an arc-shaped groove, the rigidity of the arc-shaped tip position part can be reinforced in a targeted manner by the arc-shaped groove, the effect of intensively reinforcing the rigidity is achieved, and the rigidity improvement effect of the armature 5 at the position abutted to the limiting end 801 of the iron core 8 is obvious.

In some possible embodiments, the reinforcing groove 501 is a planar groove.

Therefore, the reinforcing groove 501 can be a plane groove, and in the process of extruding the armature 5 to form the reinforcing groove 501, the plane groove can uniformly reinforce the rigidity of the armature 5 at the abutting position of the inner end of the iron core 8, so that the rigidity of the armature 5 is enlarged, and the armature is less prone to deformation caused by abutting.

In some possible embodiments, the support 1 is provided with a pressing convex edge 102 around the circumference of the through hole 101 on one side of the limiting end 801, and the pressing convex edge 102 keeps a deformation distance from the surface of the support 1.

From this, support 1 and the contact of the spacing end 801 of iron core 8 can be replaced in the setting of pressing protruding edge 102 for when the spacing end 801 of iron core 8 sinks towards the direction of embedding support 1 when being pressed, replace the deformation of support 1 through the deformation of pressing protruding edge 102, avoid the excessive sunken damage of support 1 even damage, and then avoid appearing the phenomenon that iron core 8 sinks in the subsequent measurement and the use under various environment after leading to the relay equipment because of the damage of support 1.

In some possible embodiments, the pressing edge 102 is a circular strip, or at least two arc-shaped strips uniformly distributed around the center of the through hole 101.

Therefore, the abutting convex edge 102 can be a complete circular strip, and can also be provided with at least two arc-shaped strips uniformly distributed around the center of the through hole 101, and the arc-shaped strips can be flexibly selected according to the requirements, the precision, the cost and the like of actual processing.

Referring to fig. 6 and 7, in some possible embodiments, the pressing protruding edge 102 is disposed around the center of the through hole 101 for at least two circles.

Therefore, the arrangement of at least two circles of abutting convex edges 102 can increase the reliability of the abutting convex edges 102 for bearing the limiting end 801 of the iron core 8, so as to achieve the purpose of reducing the deformation of the bracket 1.

In some possible embodiments, the distance between each circle of the pressing ledge 102 and the surface of the bracket 1 is equal, that is, the height of each circle of the pressing ledge 102 protruding from the surface of the bracket 1 is equal.

Therefore, the limit end 801 of the iron core 8 can simultaneously contact with the abutting convex edges 102, and the limit end 801 of the iron core 8 is supported by the abutting convex edges 102.

Referring to fig. 7, in some possible embodiments, the distance from the abutting convex edge 102 of each circle to the surface of the bracket 1 increases or decreases in a direction away from the center of the through hole 101.

Therefore, when the limiting end 801 of the iron core 8 is close to the bracket 1, the pressing process of the limiting convex edge has certain hierarchy, namely the limiting end firstly presses against the pressing convex edge 102 with larger surface distance to the bracket 1, and can gradually press against the pressing convex edge 102 with smaller surface distance to the bracket 1, so that the resistance of pressing and moving in the assembling process of the limiting end 801 can be reduced, and the assembly is convenient.

Referring to fig. 4 and 5, in some possible embodiments, the bracket 1 is provided with chip flutes 103 on one side or both sides of the pressing ledge 102.

Therefore, when the abutting convex edge 102 is damaged due to abutting of the limiting end 801 to generate chips, the chip groove 103 can receive and contain the chips, and the phenomenon that the chips enter the through hole 101 or move on the surface of the bracket 1 is avoided.

Referring to fig. 4, in some possible embodiments, the riveting end 802 faces the limiting end 801, the iron core 8 is in a straight cylinder shape, or the iron core 8 is in a tapered shape, and a size of a side close to the limiting end 801 is larger than a size of a side close to the riveting end 802.

From this, adopt the iron core 8 of straight tube formula to simplify manufacturing procedure, adopt to be conical iron core 8 can be convenient for iron core 8 to wear to establish in through-hole 101, convenient equipment.

Referring to fig. 8, in the present embodiment, an arc abutting protrusion 11 is disposed on a surface of the limiting end 801 abutting against the armature 5, and a highest point of the abutting protrusion 11 is located on a central line of the iron core 8.

It should be noted that the highest point of the abutting protrusion 11 is the closest point toward the armature 5 side of the abutting protrusion 11, or the farthest point from the surface of the limit end 801 of the iron core 8.

Referring to fig. 9 and 10, compared with the prior art that the iron core 8 with a plane top is adopted, in the assembly process of the iron core 8 of the present embodiment, when the armature 5 is pressed against the iron core 8 by the external force F1, the armature 5 contacts with the highest point of the abutting protrusion 11 and applies a pressure to the iron core 8, the pressure is coincident with the central line of the iron core 8, in the illustration, F2 is a reaction force generated by the abutting protrusion to the armature 5 under the pressure, so that the iron core 8 can move in the through hole 101 along the central line thereof, the possibility of pressure deflection of the iron core 8 is reduced, thereby reducing damage to the iron core 8 or the bracket 1, improving the stability of subsequent iron core 8 fixation, and reducing the manufacturing error of the "armature tracking" parameter of the relay.

The manufacturing error of the armature tracking parameter of the relay of the embodiment is small, the manufacturing precision of the relay is high, and the product quality is good.

The technical means disclosed in the utility model 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 (10)

1. A relay, comprising: the device comprises a support (1), a reed (2), a fixed contact (3), a coil (4), an armature (5), a movable contact (6), a yoke (7) and an iron core (8), wherein one end of the iron core (8) is provided with a limiting end (801), and the other end of the iron core is provided with a riveting end (802);

the yoke iron (7), the static contact (3) and the coil (4) are all fixed with the bracket (1), and the reed (2) is connected with the armature iron (5) and one end of the yoke iron (7), so that the armature iron (5) can swing relative to the yoke iron (7) to be abutted against the limit end (801);

the movable contact (6) is arranged on the spring (2) and is closed or separated from the fixed contact (3) along with the swing of the armature (5);

the bracket (1) is provided with a through hole (101) for the iron core (8) to penetrate through, and the yoke (7) is provided with a riveting hole (701) corresponding to the through hole (101) for the riveting end (802) to be matched with;

and a reinforcing groove (501) is formed on the surface of the armature (5) abutting against the limiting end (801) or the back surface of the armature by extrusion.

2. The relay according to claim 1, characterized in that the reinforcement recess (501) is an arc-shaped recess.

3. The relay according to claim 1, characterized in that the reinforcement recess (501) is a planar recess.

4. The relay according to any one of claims 1 to 3, wherein a pressing convex edge (102) is arranged on the bracket (1) towards one side of the limiting end (801) around the circumference of the through hole (101), and the pressing convex edge (102) keeps a deformation distance with the surface of the bracket (1).

5. The relay according to claim 4, wherein the press ledge (102) is a circular strip or at least two arc-shaped strips evenly distributed around the center of the through hole (101).

6. The relay according to claim 4, wherein the press ledge (102) is arranged at least two turns around the center of the through hole (101).

7. The relay according to claim 6, characterized in that the distance from the abutting ledge (102) to the surface of the bracket (1) is equal for each turn.

8. The relay according to claim 6, characterized in that the distance from the pressing ledge (102) of each ring to the surface of the bracket (1) increases or decreases in a direction away from the center of the through hole (101).

9. The relay according to claim 4, characterized in that the bracket (1) is provided with chip flutes (103) on one or both sides of the press ledge (102).

10. The relay according to claim 1, wherein the riveting end (802) is towards the limiting end (801), the iron core (8) is in a straight cylinder shape, or the iron core (8) is in a conical shape, and the size of the side close to the limiting end (801) is larger than the size of the side close to the riveting end (802).

Images