CN114551160A - Miniature relay capable of simplifying assembly - Google Patents

Abstract

The invention discloses a miniature relay capable of simplifying assembly, which comprises a base, a coil frame, an iron core and a yoke iron, wherein the coil frame is provided with a coil hole; the coil rack comprises flanges at two ends, a winding window between the flanges at the two ends and a through hole penetrating through the flanges at the two ends; the iron core and the yoke are respectively in L-shaped shapes; the horizontal side of the L shape of the iron core is inserted into the through hole of the coil rack from the outer side of one flange of the coil rack, the bottom of the vertical side of the L shape of the iron core is fixedly inserted on the base, and the part of the vertical side of the L shape of the iron core, which is exposed out of one flange of the coil rack, is set as the pole surface of the iron core; the bottom of the vertical side of the yoke is fixedly inserted on the base. The invention can simplify the assembly, can ensure that the iron core has a large enough pole surface, reduces the volume of the relay, and reduces the height of the relay, thereby meeting the requirement of small-space installation and use of the relay.

Description

Miniature relay capable of simplifying assembly

Technical Field

The invention relates to the technical field of relays, in particular to a miniature relay capable of being assembled simply.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like. As the control function of the relay has been widely applied to various fields, the requirement for the relay is higher and higher as the application field of the relay is continuously expanded. The relay in the prior art is limited by the installation space, and the volume of the relay is required to be as small as possible, however, the relay is required to have certain performance indexes, for example, a certain large iron core magnetic pole surface is required, so that the volume of the relay cannot be reduced, and the installation and the use of the relay are influenced. On the other hand, the relay in the prior art includes a magnetic circuit portion, the magnetic circuit portion includes components such as an iron core, a yoke and a coil former, the iron core is a straight structure, the yoke is an L-shaped structure, when assembling, the straight iron core is usually inserted into a through hole of the coil former, one end of the iron core is set to be a pole face, the other end is fixed with one side of the L-shaped of the yoke through riveting, the other side of the L-shaped of the yoke is matched with the outer side of a winding window of the coil former, then the assembly is installed on a base, and the yoke and the coil former need to be positioned when installing, so that the disadvantage of complex assembly is caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a small relay capable of simplifying assembly, which can simplify the assembly, reduce the volume of the relay and reduce the height of the relay on the basis of ensuring that an iron core has a large enough pole face through structural improvement, thereby meeting the requirement of small-space installation and use of the relay.

The technical scheme adopted by the invention for solving the technical problem is as follows: a miniature relay capable of simplifying assembly comprises a base, a coil rack, an iron core and a yoke; the coil rack comprises flanges at two ends, a winding window between the flanges at the two ends and a through hole penetrating through the flanges at the two ends; the iron core and the yoke are respectively in an L shape; the coil rack is arranged horizontally; the horizontal side of the L shape of the iron core is inserted into the through hole of the coil rack from the outside of one flange of the coil rack, the bottom of the vertical side of the L shape of the iron core is fixedly inserted on the base, and the part of the vertical side of the L shape of the iron core, which is exposed out of one flange of the coil rack, is set as the pole surface of the iron core so as to be matched with the armature of the relay; the horizontal side of the yoke iron is matched on the coil rack and respectively pressed on flanges at two ends of the coil rack, the vertical side of the yoke iron penetrates through an insertion groove arranged on the other flange of the coil rack and is contacted with the tail end of the L-shaped horizontal side of the iron core, and the bottom of the vertical side of the yoke iron is fixedly inserted on the base; the bobbin is fixed to the base through the core and the yoke.

The tail end of the L-shaped horizontal side of the iron core is provided with an extending section relative to the through hole of the coil rack, and the vertical side of the yoke is provided with a slot extending upwards from the bottom end so that two sides of the slot form an inserting arm; the two inserting arms on the vertical side of the yoke respectively penetrate through the inserting grooves on the two sides of the other flange of the coil rack, and the bottoms of the two inserting arms are respectively inserted and fixed on the base; the upper wall surface of the slot on the vertical side of the yoke is in contact with the extending section of the tail end of the L-shaped horizontal side of the iron core.

Furthermore, a magnetic steel is clamped between the upper wall surface of the slot on the vertical side of the yoke and the upper surface of the extending section at the tail end of the L-shaped horizontal side of the iron core, so that the relay becomes a magnetic latching relay.

A magnetic steel fixing part is also arranged at the position for clamping one magnetic steel; the magnetic steel fixing piece comprises a sleeving part and a clamping part; the sleeve joint part is provided with a sleeve opening matched with the size of the cross section of the iron core, and the clamping part is provided with two clamping pieces; the magnetic steel fixing part is fixedly sleeved in the extending section at the tail end of the L-shaped horizontal side of the iron core through the sleeve opening, and the two clamping pieces of the magnetic steel fixing part respectively abut against the left side and the right side of the magnetic steel; hooks for hooking the yoke are respectively arranged at two ends of the head of the armature outside two sides corresponding to the width of the reset spring.

The part of the L-shaped vertical side of the iron core, which is exposed outside one flange of the coil rack, is also provided with a protruding part protruding towards two sides for enlarging the magnetic pole surface of the iron core.

The relay further comprises a movable spring armature component, and the movable spring armature component comprises a reset reed, a movable spring part and an armature; the reset spring is bent into an L shape, one side of the L shape of the reset spring is provided with a yoke connecting part which is used for being fixed with one horizontal side of the yoke, the other side of the L shape of the reset spring is bent downwards relative to one side of the L shape of the reset spring, and the other side of the L shape of the reset spring is fixed with the armature and enables the head of the armature to be matched with the knife edge of the yoke; the movable spring part comprises a bridge type movable spring piece and two movable contacts, the two movable contacts are respectively fixed at two ends of the bridge type movable spring piece, and the middle of the bridge type movable spring piece is fixed on the armature so that the two movable contacts are positioned outside two sides of the armature.

The bridge type movable reed is composed of a reed, the reset reed and the bridge type movable reed are of an integrated structure, the bridge type movable reed is located at the tail end of the other side of the L shape of the reset reed, so that the reset reed and the bridge type movable reed form a T-shaped movable spring part, the movable spring part is fixed with one horizontal side of the yoke through a yoke connecting part on one side of the L shape of the reset reed, and the other side of the L shape of the reset reed of the movable spring part is fixed on the armature through the middle of the bridge type movable reed.

The bridge type movable spring plate is formed by a plurality of spring plates which are laminated together; the other L-shaped edge of the laminated reeds and the reset reed is fixedly riveted with the armature at the same position of the armature, so that the movable contacts at two ends of the bridge-type movable reed are positioned at two opposite sides of the riveting position of the reset reed and the armature.

The other L-shaped edge of the reset spring is positioned between the bridge type movable spring and the armature; the outer sides of two sides of the width of the corresponding part of the other side of the L shape corresponding to the reset spring pieces of the laminated spring pieces are respectively provided with a bending part, and the bending direction of the bending part faces to the armature; the bending parts of the reed springs are distributed in a staggered mode, and the distance between the two bending parts of the reed springs gradually increases towards the direction away from the armature.

In the bridge type movable contact spring, a strip groove which is not connected with the two movable contacts is also arranged between the two movable contacts.

Hooks for hooking the yoke are respectively arranged at two ends of the head of the armature outside two sides corresponding to the width of the reset spring.

In one side of the L shape of the reset reed, a middle groove is formed by extending the bending part to the yoke connecting part, and the middle groove is gradually increased from the bending part to the yoke connecting part, so that the reset reed sheet parts on two sides of the middle groove are gradually reduced from the bending part to the yoke connecting part.

Two ends of the bridge type movable reed are respectively connected with two movable contacts, the four movable contacts are positioned on the same straight line, a strip seam is also arranged between the two movable contacts at the same end of the bridge type movable reed, one end of the strip seam is led out of the bridge type movable reed, and the other end of the strip seam extends towards the middle of the bridge type movable reed, so that the two movable contacts at the same end of the bridge type movable reed are in parallel connection; two strip seams extending from the two ends of the bridge type movable spring piece to the middle are not intersected in the middle, so that the movable contacts at the two ends of the bridge type movable spring piece are connected in series.

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

1. the iron core and the yoke are both designed into L-shaped shapes; inserting the horizontal side of the L shape of the iron core into the through hole of the coil rack from the outside of one flange of the coil rack, inserting and fixing the bottom of the vertical side of the L shape of the iron core on the base, matching the horizontal side of the yoke iron on the coil rack and respectively pressing the horizontal side of the yoke iron on the flanges at two ends of the coil rack, enabling the vertical side of the yoke iron to penetrate through the other flange of the coil rack and be in contact with the tail end of the horizontal side of the L shape of the iron core, and inserting and fixing the bottom of the vertical side of the yoke iron on the base; the bobbin is fixed to the base through the core and the yoke. According to the structure, the iron core is designed into the L shape, the bottom of the vertical side of the L shape of the iron core is fixed with the base, the iron core is fixed, the yoke penetrates through the slot of the coil frame to be fixedly matched with the base, so that the iron core and the yoke are not required to be riveted in the assembly process of a magnetic circuit, a closed circuit of the magnetic circuit can be achieved, the coil frame is not required to be fixed and limited, the production process is simplified, and the product performance is improved; because the L-shaped vertical side of the iron core is mostly outside the coil frame, the contact area with the armature is increased, and the problem of small pole face can be solved on the basis of miniaturization.

2. According to the invention, a magnetic steel is clamped between the upper wall surface of the slot on the vertical side of the yoke and the upper surface of the extending section at the tail end of the L-shaped horizontal side of the iron core, so that the relay becomes a magnetic latching relay. According to the structure, the iron core and the yoke are fixed through the base, namely the yoke and the iron core are limited through the base, so that the magnetic steel can be clamped between the yoke and the iron core and is fixed, and the relay can be conveniently made into a magnetic latching relay.

3. The invention introduces the bridge type movable spring into the clapper type movable spring armature component, and fixes the middle of the bridge type movable spring on the armature so as to ensure that the movable contacts at two ends of the bridge type movable spring are positioned outside two sides of the armature. The structure of the invention enables the contacts to be positioned at two opposite sides of the armature, thereby reducing the height of the relay.

4. According to the invention, the reset reed and the bridge type movable reed are integrated, the bridge type movable reed is positioned at the tail end of the other L-shaped side of the reset reed, so that the reset reed and the bridge type movable reed form a T-shaped movable spring part, the movable spring part is fixed with one horizontal side of the yoke through the yoke connecting part on one L-shaped side of the reset reed, and the other L-shaped side of the reset reed of the movable spring part is fixed on the armature through the middle of the bridge type movable reed. The structure of the invention can increase the distance from the contact to the riveting point, lengthen the effective length of the deformation of the movable spring, improve the swinging force arm of the contact and improve the flexibility, thereby solving the problems of poor secondary suction or smaller overtravel caused by the shorter deformation length of the reset reed in a limited height space and solving the problems of flexibility and deformation length caused by the longitudinal transfer of the force arm of the movable spring to the transverse direction in the low height problem.

5. According to the invention, the bridge type movable spring is formed by a plurality of laminated springs, and the L-shaped other sides of the laminated springs and the reset spring are riveted and fixed with the armature at the same position of the armature, so that the movable contacts at two ends of the bridge type movable spring are positioned at two opposite sides of the riveting position of the reset spring and the armature; and respectively arranging bending parts on the outer sides of two sides of the width of the corresponding part of the bridge type movable reed on the other side corresponding to the L shape of the reset reed, and distributing the bending parts of the reeds in a staggered manner. According to the structure, on one hand, the same beneficial effects as those of the point 4 can be achieved, on the other hand, the load capacity can be improved through the multiple reeds, the multiple reeds are bent in a staggered mode, springback caused by large load and large magnetic attraction can be avoided, and compared with the existing conducting plate, the conducting plate can avoid contact adhesion under the condition of large current and is easy to break; meanwhile, the contact pressure is convenient to adjust; the plurality of reeds are large in load, large in heat generation, staggered and bent through the plurality of reeds to form gaps, and the heat of the reeds can be reduced through convection, so that the problem of temperature rise is solved.

7. The invention adopts the bridge type movable contact spring, and a strip groove which is not connected with the two movable contacts is also arranged between the two movable contacts. According to the structure, the two movable contacts form shunting in the bridge type movable spring, so that the heat generation of the movable spring can be reduced, the air convection is increased by the strip grooves, the effect of reducing the heat of the movable spring is achieved, the problem of temperature rise is solved, and meanwhile, the counter force of the movable spring can be improved.

8. The invention adopts the technical scheme that hooks for hooking and hanging on a yoke of the relay are respectively arranged outside two sides of the head of the armature corresponding to the width of the reset spring. The structure of the invention can improve the shock resistance of the relay and simultaneously avoid the armature from rotating.

9. In the L-shaped side of the reset spring, the middle slot is extended from the bending position to the yoke connecting part, and the middle slot is gradually increased from the bending position to the yoke connecting part, so that the reset spring sheet parts on two sides of the middle slot are gradually reduced from the bending position to the yoke connecting part. The structure of the invention can ensure the anti-falling strength of the relay; but also can improve the flexibility of the reed and reduce the counter force.

The invention is further explained in detail with the accompanying drawings and the embodiments; a small-sized relay of the present invention, which can simplify assembly, is not limited to the embodiment.

Drawings

FIG. 1 is a schematic external structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic perspective view of a first embodiment of the present invention (without the housing);

FIG. 3 is a schematic perspective view of a first embodiment of the present invention (without the housing and rotated at an angle);

FIG. 4 is an exploded perspective view (rotated by an angle) of a first embodiment of the present invention;

FIG. 5 is a schematic perspective view of a first embodiment of the present invention (without the housing and without the moving spring armature member);

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a schematic perspective view of a core according to a first embodiment of the present invention;

fig. 8 is a schematic perspective view of a moving spring armature member according to a first embodiment of the present invention;

FIG. 9 is an enlarged schematic view of section A of FIG. 8;

fig. 10 is a schematic perspective view (bottom-up) of a moving spring armature component according to a first embodiment of the invention;

FIG. 11 is an enlarged schematic view of section B of FIG. 10;

fig. 12 is a side view of a moving spring armature member according to a first embodiment of the present invention;

fig. 13 is an exploded perspective view of a moving spring armature member according to a first embodiment of the present invention;

fig. 14 is a schematic view of one of the springs of the bridge movable spring of the movable spring armature member according to the first embodiment of the present invention;

fig. 15 is a schematic view of the configuration of the return spring of the moving spring armature member of the first embodiment of the present invention;

fig. 16 is a schematic perspective view of a movable spring armature member according to a second embodiment of the present invention;

fig. 17 is a schematic perspective view (rotated by one angle) of a movable spring armature member according to a second embodiment of the present invention;

FIG. 18 is a schematic perspective view of a second embodiment of the present invention (without the housing);

FIG. 19 is a schematic perspective view (without a housing) of a third embodiment of the present invention;

fig. 20 is a schematic perspective view of a movable spring armature member (not provided with a movable contact) according to a third embodiment of the present invention.

Detailed Description

Example one

Referring to fig. 1 to 15, a compact relay of the present invention, which can be assembled simply, includes a case 10, a stationary spring 20, a base 1, a bobbin 2, an iron core 3, and a yoke 4; the coil frame 2 comprises flanges 21 and 22 at two ends, a winding window 23 between the flanges at two ends and a through hole 24 (namely an iron core mounting hole) penetrating through the flanges at two ends; the iron core 3 and the yoke iron 4 are respectively in an L shape; the coil rack 2 is arranged horizontally; the L-shaped horizontal side 31 of the iron core 3 is inserted into the through hole 24 of the coil frame 2 from the outer surface of one flange 21 of the coil frame, the bottom of the L-shaped vertical side 32 of the iron core 3 is fixedly inserted on the base 1, and the part 33 of the L-shaped vertical side 32 of the iron core 3, which is exposed out of one flange 21 of the coil frame, is set as a pole surface of the iron core so as to be matched with an armature of a relay; the horizontal side 41 of the yoke iron 4 is matched on the coil rack 2 and respectively pressed on the flanges 21 and 22 at the two ends of the coil rack 2, the vertical side 42 of the yoke iron 4 passes through the other flange 22 of the coil rack 2 and is provided with an inserting groove 25 and is contacted with the tail end of the L-shaped horizontal side 31 of the iron core 3, and the bottom of the vertical side 42 of the yoke iron 4 is inserted and fixed on the base 1; the bobbin 2 is fixed to the base 1 via the core 3 and the yoke 4.

In this embodiment, the end of the L-shaped horizontal side 31 of the iron core 3 has a protruding section 34 relative to the through hole 24 of the coil frame 2, and the vertical side 42 of the yoke 4 is provided with a slot 43 extending upward from the bottom end so that the two sides of the slot form insertion arms 44; the two insertion grooves 25 of the other flange 22 of the coil rack 2 are respectively arranged at two sides corresponding to the width of the vertical side 42 of the yoke 4, the two insertion arms 44 of the vertical side 42 of the yoke 4 respectively penetrate through the insertion grooves 25 at two sides of the other flange 22 of the coil rack 2, and the bottoms of the two insertion arms 44 are respectively inserted and fixed on the base 1; the upper wall surface 431 of the slot 43 of the vertical side 42 of the yoke 4 contacts the extension 34 of the end of the L-shaped horizontal side 31 of the core 3.

In the present embodiment, a magnetic steel 40 is sandwiched between the upper wall surface 431 of the slot 43 of the vertical side 42 of the yoke 4 and the upper surface of the protruding section 34 of the end of the L-shaped horizontal side 31 of the core 3, so that the relay becomes a magnetic latching relay. Of course, the magnetic steel may not be installed.

In this embodiment, a magnetic steel fixing member 5 is further installed at the position where one magnetic steel 40 is clamped; the magnetic steel fixing piece 5 comprises a sleeving part 51 and a clamping part 52; the sleeving part 51 is provided with a sleeving opening matched with the section size of the iron core 3, and the clamping part 52 is provided with two clamping pieces; the magnetic steel fixing part 5 is fixedly sleeved in the extending section 34 at the tail end of one side 31 of the L-shaped horizontal part of the iron core through the sleeve opening, and the two clamping pieces of the magnetic steel fixing part 5 respectively support the left side and the right side of the magnetic steel 40.

In this embodiment, the portion 33 of the L-shaped vertical side 32 of the core 3 exposed outside one of the flanges of the bobbin is further provided with protrusions 35 protruding to both sides for enlarging the pole faces of the core.

In the embodiment, the relay further comprises a movable spring armature component, wherein the movable spring armature component comprises a reset reed 6, a movable spring part 7 and an armature 8; the reset spring 6 is bent into an L-shape by a bending portion 61, one L-shaped side 62 of the reset spring 6 is substantially horizontally arranged, one L-shaped side 62 of the reset spring 6 is provided with a yoke connecting portion 621 for fixing with the horizontal side 41 of the yoke 4, the other L-shaped side 63 of the reset spring 6 is bent downwards relative to the one L-shaped side 62 of the reset spring, the other L-shaped side 63 of the reset spring 6 is fixed with the armature 8, and the head 81 of the armature 8 is matched with the knife edge of the yoke 4; the movable spring part 7 comprises a bridge-type movable spring piece 71 and two movable contacts 72, wherein the two movable contacts 72 are respectively fixed at two ends of the bridge-type movable spring piece 71, the middle of the bridge-type movable spring piece 71 is fixed on the armature 8, and the two movable contacts 72 are respectively positioned at two sides of the armature 8.

In this embodiment, the bridge movable spring 71 is composed of three springs 711, 712, 713 that are stacked together; the three laminated springs 711, 712, 713 and the other L-shaped side 63 of the reset spring 6 are riveted with the armature 8 at the same position of the armature 8, so that the movable contacts 72 at the two ends of the bridge-type movable spring 71 are at the two opposite sides of the riveted position of the reset spring 6 and the armature 8.

In this embodiment, the armature 8 is provided with a convex bract 82, the bridge-type movable spring 71 and the other L-shaped side 63 of the reset spring 6 are respectively provided with through holes 73 and 631, that is, the three springs 711, 712 and 713 are respectively provided with a through hole 73, the through holes 73 of the three springs 711, 712 and 713 and the through hole 631 of the other L-shaped side 63 of the reset spring 6 are respectively matched with the convex bract 82 of the armature 8, and the armature 8, the reset spring 6 and the bridge-type movable spring 71 are fixed together by riveting.

In this embodiment, the other L-shaped edge 63 of the reset spring 6 is located between the bridge movable spring 71 and the armature 8; the three laminated spring pieces 711, 712 and 713 are respectively provided with a bending part 74 at the outer side of two sides of the width of the corresponding part of the other L-shaped side 63 corresponding to the reset spring piece 6, and the bending direction of the bending part 74 faces to the armature 8; the bending parts 74 of the three spring pieces 711, 712 and 713 are distributed in a staggered manner, and the distance between the two bending parts 74 of the three spring pieces 711, 712 and 713 gradually increases towards the direction away from the armature, so that a certain gap is formed between the spring pieces at the position corresponding to the bending parts, and heat dissipation is facilitated. The shape of the bending part 74 is roughly Z-shaped, the reed 711 is closest to the reset reed 6, the reed 711, the reed 712 and the reed 713 are sequentially laminated, two bending parts 74 of the reed 711 are arranged at the outer sides of two sides of the width of the corresponding part of the other L-shaped side 63 corresponding to the reset reed 6, and the bending parts 74 of the reed 711 are attached to the armature 8; the reed 712 is laminated on the outer surface of the reed 711, the distance between the two bending parts 74 of the reed 712 is larger than the distance between the two bending parts 74 of the reed 711, and the bent part of the bending part 74 of the reed 712 is attached to the reed 711; the reed 713 is laminated on the outer surface of the reed 712, the distance between the two bending parts 74 of the reed 713 is larger than the distance between the two bending parts 74 of the reed 712, and the bent part of the bending part 74 of the reed 713 is attached to the reed 712; thus, a gap 75 is formed at the position of the bent portion 74.

In this embodiment, in the bridge-type movable contact spring 71, a strip groove 76 which does not connect two movable contacts is further provided between the two movable contacts 72. Since the bridge movable spring 71 is constituted by three springs 711, 712, 713 laminated together, the spring 711, the spring 712, and the spring 713 are each provided with the strip groove 76. In this embodiment, there is one groove 76, and the number of the grooves 76 may be plural as necessary for balancing the reaction force.

In this embodiment, hooks 83 for hooking and hanging on a yoke of a relay are respectively provided at both ends of the head of the armature 8 outside both sides corresponding to the width of the reset spring 6.

In this embodiment, the L-shaped side 62 of the reset spring 6 is provided with a middle slot 64 extending from the bent portion 61 toward the yoke connecting portion 621, and the middle slot 64 gradually increases from the bent portion 61 toward the yoke connecting portion 621, so that the reset spring sheet body portions 65 on both sides of the middle slot gradually decrease from the bent portion 61 toward the yoke connecting portion 621.

The invention can simplify the miniature relay assembled, have adopted and set up iron core 3 and yoke 4 as the L-type shape; inserting the L-shaped horizontal side 31 of the iron core 3 into the through hole 24 of the coil frame 2 from the outer surface of one flange 21 of the coil frame 2, inserting and fixing the bottom of the L-shaped vertical side 32 of the iron core on the base 1, matching the horizontal side 41 of the yoke 4 on the coil frame 2 and pressing the horizontal side on the flanges 21 and 22 at two ends of the coil frame 2 respectively, allowing the vertical side 42 of the yoke 4 to penetrate through the other flange 22 of the coil frame 2 and be provided with the slot 25 and contacted with the tail end of the L-shaped horizontal side 31 of the iron core 3, and inserting and fixing the bottom of the vertical side 42 of the yoke 4 on the base 1; the bobbin 2 is fixed to the base 1 via the core 3 and the yoke 4. According to the structure, the iron core 3 is designed to be L-shaped, the bottom of the vertical side 32 of the L-shaped iron core 3 is fixed with the base 1, the iron core 3 is fixed, and the yoke 4 penetrates through the slot 25 of the coil frame 2 to be fixedly matched with the base 1, so that a magnetic circuit closed loop can be achieved without riveting the iron core and the yoke in the assembly process of a magnetic circuit, the coil frame is not required to be fixed and limited, the production process is simplified, and the product performance is improved; because the L-shaped vertical side of the iron core is mostly outside the coil frame, the contact area with the armature is increased, and the problem of small pole face can be solved on the basis of miniaturization.

The invention provides a small relay capable of simplifying assembly, which adopts a magnetic steel 40 clamped between the upper wall surface 431 of a slot 43 of a vertical side 42 of a yoke 4 and the upper surface of a protruding section 34 of the tail end of an L-shaped horizontal side 31 of an iron core 3, thereby enabling the relay to be a magnetic latching relay. According to the structure, the iron core 3 and the yoke 4 are fixed through the base 1, namely the yoke 4 and the iron core 3 are limited through the base 1, so that the magnetic steel 40 can be clamped between the yoke 4 and the iron core 3, the magnetic steel 40 is fixed, and the relay can be conveniently made into a magnetic latching relay.

The invention relates to a miniature relay capable of simplifying assembly, which adopts a bridge type movable spring 71 introduced into a clapper type movable spring armature component, and the middle of the bridge type movable spring 71 is fixed on an armature 8 so that movable contacts 72 at two ends of the bridge type movable spring 71 are positioned outside two sides of the armature 8. The structure of the invention enables the contacts to be positioned at two opposite sides of the armature, thereby reducing the height of the relay.

The invention relates to a small relay capable of simplifying assembly, which adopts a bridge type movable spring 71 consisting of three laminated springs 711, 712 and 713, wherein the three laminated springs 711, 712 and 713 and the L-shaped other side 63 of a reset spring 6 are riveted and fixed with an armature 8 at the same position of the armature 8, so that movable contacts 72 at two ends of the bridge type movable spring 71 are positioned at two opposite sides of the riveting position of the reset spring 6 and the armature 8; and the outer sides of two sides of the bridge type movable reed 71 corresponding to the width of the corresponding part of the other side 63 of the L shape of the reset reed 6 are respectively provided with a bending part 74, and the bending parts 74 of the three reeds are distributed in a staggered way. According to the structure, on one hand, the distance from the contact to the riveting point can be increased, the deformation effective length of the movable spring is lengthened, the swinging force arm of the contact is improved, and the flexibility is improved, so that the problems of poor secondary suction or small over stroke caused by the short deformation length of the reset reed in a limited height space are solved, and the problems of flexibility and deformation length caused by the fact that the force arm of the movable spring is transferred from the longitudinal direction to the transverse direction in the low height problem are solved; on the other hand, the load capacity can be improved through the plurality of reeds, the reeds are bent in a staggered mode, springback caused by large magnetic attraction force due to large load can be avoided, and compared with the existing conducting plate, the conducting plate can avoid contact adhesion under the condition of large current and is easy to break; meanwhile, the contact pressure is convenient to adjust; the plurality of reeds are large in load, large in heat generation, staggered and bent through the plurality of reeds to form gaps, and the heat of the reeds can be reduced through convection, so that the problem of temperature rise is solved.

A small relay capable of simplifying assembly of the invention employs a bridge type movable contact spring 71, and a strip groove 76 which is not connected with two movable contacts is arranged between the two movable contacts 72. According to the structure, the two movable contacts form shunting in the bridge type movable spring, so that the heat generation of the movable spring can be reduced, the air convection is increased by the strip grooves, the effect of reducing the heat of the movable spring is achieved, the problem of temperature rise is solved, and meanwhile, the counter force of the movable spring can be improved.

The invention relates to a small relay capable of simplifying assembly, wherein hooks 83 for hooking and hanging on a yoke of the relay are respectively arranged at two ends of a head part 81 of an armature 8 outside two sides corresponding to the width of a reset spring. The structure of the invention can improve the shock resistance of the relay and simultaneously avoid the armature from rotating.

The invention relates to a small relay capable of simplifying assembly, wherein a middle slot 64 is arranged in an L-shaped side 62 of a reset reed 6 and extends from a bent part to the direction of a yoke connecting part 621, and the middle slot 64 is gradually increased from the bent part to the direction of the yoke connecting part 621, so that reset reed sheet parts 65 on two sides of the middle slot 64 are gradually reduced from the bent part to the direction of the yoke connecting part. The structure of the invention can ensure the anti-falling strength of the relay; but also can improve the flexibility of the reed and reduce the counter force.

Example two

Referring to fig. 16 to 18, a compact relay of the present invention with simplified assembly is different from the first embodiment in that the reset spring 6 and the bridge-type movable spring 71 are of an integral structure, the bridge-type movable spring 71 is located at the end of the other side 63 of the L-shape of the reset spring 6, so that the reset spring 6 and the bridge-type movable spring 71 form a movable spring part 70 in a T-shape, so that the bridge-type movable spring 71 is only one piece, in order to improve the current carrying capacity of the movable spring, in the present embodiment, a current carrying copper wire 77 is further connected to the back side of the bridge-type movable spring 71 corresponding to the movable contact 72, and both ends of the current carrying copper wire 77 are respectively connected to the back sides of two movable contacts 72; the movable spring member 70 is fixed to the yoke 4 by a yoke connecting portion 621 of one L-shaped side 62 of the return spring 6, and the other L-shaped side 63 of the return spring of the movable spring member 70 is fixed to the armature 8 by the middle of the bridge-type movable spring 71.

The small relay capable of simplifying assembly can increase the distance from a contact to a riveting point, prolong the deformation effective length of the movable spring, improve the swinging force arm of the contact and improve the flexibility, thereby solving the problems of poor secondary suction or smaller over stroke caused by the shorter deformation length of the reset reed in a limited height space and the problems of flexibility and deformation length caused by the longitudinal transfer of the force arm of the movable spring to the transverse direction in the low height problem.

EXAMPLE III

Referring to fig. 19 to 20, the compact relay of the present invention with simplified assembly is different from the first embodiment in that two ends of the bridge-type movable spring 71 are respectively connected to two movable contacts 72, and four movable contacts 72 are all located on the same straight line, a strip slit 78 is further provided between two movable contacts 72 at the same end of the bridge-type movable spring 71, one end of the strip slit 78 is led out of the bridge-type movable spring 71, and the other end of the strip slit 78 extends toward the middle of the bridge-type movable spring 71, so that the two movable contacts 72 at the same end of the bridge-type movable spring 71 are in parallel connection; the two slits 78 extending from the two ends of the bridge-type movable spring piece 71 to the middle do not intersect at the middle, so that the movable contacts 72 at the two ends of the bridge-type movable spring piece 71 are connected in series.

According to the small relay capable of simplifying assembly, the two movable contacts 72 on one side are connected in parallel to play a shunting role, contact resistance of the contacts is reduced, the movable contacts 72 on the left side and the right side are connected in series, and the equivalent contact resistance of the four movable contacts 72 is the contact resistance of one movable contact. The two moving contacts 72 on one side are connected in parallel, so that shunting and temperature rise reduction are achieved, contact loss is further reduced, and the contact service life is prolonged; the arc breaking is facilitated, so that the contact clearance can be reduced, the suction requirement of the coil is lowered, and the ampere-turn value of the coil can be reduced.

The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims (12)

1. A miniature relay capable of simplifying assembly comprises a base, a coil rack, an iron core and a yoke; the coil rack comprises flanges at two ends, a winding window between the flanges at the two ends and a through hole penetrating through the flanges at the two ends; the method is characterized in that: the iron core and the yoke are respectively in an L shape; the coil rack is arranged horizontally; the horizontal side of the L shape of the iron core is inserted into the through hole of the coil rack from the outside of one flange of the coil rack, the bottom of the vertical side of the L shape of the iron core is fixedly inserted on the base, and the part of the vertical side of the L shape of the iron core, which is exposed out of one flange of the coil rack, is set as the pole surface of the iron core so as to be matched with the armature of the relay; the horizontal side of the yoke iron is matched on the coil rack and respectively pressed on flanges at two ends of the coil rack, the vertical side of the yoke iron penetrates through an insertion groove arranged on the other flange of the coil rack and is contacted with the tail end of the L-shaped horizontal side of the iron core, and the bottom of the vertical side of the yoke iron is fixedly inserted on the base; the bobbin is fixed to the base through the core and the yoke.

2. A miniaturised relay according to claim 1, characterised in that it is simplified in its assembly: the tail end of the L-shaped horizontal side of the iron core is provided with an extending section relative to the through hole of the coil rack, and the vertical side of the yoke is provided with a slot extending upwards from the bottom end so that two sides of the slot form an inserting arm; the two inserting arms on the vertical side of the yoke respectively penetrate through the inserting grooves on the two sides of the other flange of the coil rack, and the bottoms of the two inserting arms are respectively inserted and fixed on the base; the upper wall surface of the slot on the vertical side of the yoke is in contact with the extending section of the tail end of the L-shaped horizontal side of the iron core.

3. A miniaturised relay according to claim 2, characterised in that it simplifies assembly: furthermore, a magnetic steel is clamped between the upper wall surface of the slot on the vertical side of the yoke and the upper surface of the extending section at the tail end of the L-shaped horizontal side of the iron core, so that the relay becomes a magnetic latching relay.

4. A miniaturised relay according to claim 3, characterised in that it is simplified in its assembly: a magnetic steel fixing part is also arranged at the position for clamping a magnetic steel; the magnetic steel fixing piece comprises a sleeving part and a clamping part; the sleeve joint part is provided with a sleeve opening matched with the size of the cross section of the iron core, and the clamping part is provided with two clamping pieces; the magnetic steel fixing part is fixedly sleeved in the extending section at the tail end of the L-shaped horizontal side of the iron core through the sleeve opening, and the two clamping pieces of the magnetic steel fixing part respectively abut against the left side and the right side of the magnetic steel; hooks for hooking the yoke are respectively arranged at two ends of the head of the armature outside two sides corresponding to the width of the reset spring.

5. A miniaturised relay according to claim 1, characterised in that it is simplified in its assembly: the part of the L-shaped vertical side of the iron core, which is exposed outside one flange of the coil rack, is also provided with a protruding part protruding towards two sides for enlarging the magnetic pole surface of the iron core.

6. A miniaturised relay according to one of the claims 1 to 5, characterised in that it allows simplified assembly: the relay further comprises a movable spring armature component, and the movable spring armature component comprises a reset reed, a movable spring part and an armature; the reset spring is bent into an L shape, one side of the L shape of the reset spring is provided with a yoke connecting part which is used for being fixed with one horizontal side of the yoke, the other side of the L shape of the reset spring is bent downwards relative to one side of the L shape of the reset spring, and the other side of the L shape of the reset spring is fixed with the armature and enables the head of the armature to be matched with the knife edge of the yoke; the movable spring part comprises a bridge type movable spring piece and two movable contacts, the two movable contacts are respectively fixed at two ends of the bridge type movable spring piece, and the middle of the bridge type movable spring piece is fixed on the armature so that the two movable contacts are positioned outside two sides of the armature.

7. A miniaturised relay according to claim 6, characterised in that it is simplified in its assembly: the bridge type movable reed is composed of a reed, the reset reed and the bridge type movable reed are of an integrated structure, the bridge type movable reed is located at the tail end of the other side of the L shape of the reset reed, so that the reset reed and the bridge type movable reed form a T-shaped movable spring part, the movable spring part is fixed with one horizontal side of the yoke through a yoke connecting part on one side of the L shape of the reset reed, and the other side of the L shape of the reset reed of the movable spring part is fixed on the armature through the middle of the bridge type movable reed.

8. A miniaturised relay according to claim 6, characterised in that it is simplified in its assembly: the bridge type movable spring plate is formed by a plurality of spring plates which are laminated together; the other L-shaped edge of the laminated reeds and the reset reed is fixedly riveted with the armature at the same position of the armature, so that the movable contacts at two ends of the bridge-type movable reed are positioned at two opposite sides of the riveting position of the reset reed and the armature.

9. A miniaturised relay according to claim 8, characterised in that it is simplified in its assembly: the other L-shaped edge of the reset spring is positioned between the bridge type movable spring and the armature; the outer sides of two sides of the width of the corresponding part of the other side of the L shape corresponding to the reset spring pieces of the laminated spring pieces are respectively provided with a bending part, and the bending direction of the bending part faces to the armature; the bending parts of the reed springs are distributed in a staggered mode, and the distance between the two bending parts of the reed springs gradually increases towards the direction away from the armature.

10. A miniaturised relay according to claim 6, characterised in that it is simplified in its assembly: in the bridge type movable contact spring, a strip groove which is not connected with the two movable contacts is also arranged between the two movable contacts.

11. A miniaturised relay according to claim 6, characterised in that it is simplified in its assembly: in one side of the L shape of the reset reed, a middle groove is formed by extending the bending part to the yoke connecting part, and the middle groove is gradually increased from the bending part to the yoke connecting part, so that the reset reed sheet parts on two sides of the middle groove are gradually reduced from the bending part to the yoke connecting part.

12. A miniaturised relay according to claim 6 characterised in that it simplifies assembly: two ends of the bridge type movable reed are respectively connected with two movable contacts, the four movable contacts are positioned on the same straight line, a strip seam is also arranged between the two movable contacts at the same end of the bridge type movable reed, one end of the strip seam is led out of the bridge type movable reed, and the other end of the strip seam extends towards the middle of the bridge type movable reed, so that the two movable contacts at the same end of the bridge type movable reed are in parallel connection; two strip seams extending from the two ends of the bridge type movable spring piece to the middle are not intersected in the middle, so that the movable contacts at the two ends of the bridge type movable spring piece are connected in series.

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