CN215118788U - Clapper type bistable magnetic circuit structure and magnetic latching relay - Google Patents

Abstract

The utility model discloses a clapper type bistable magnetic circuit structure and a magnetic latching relay, wherein the magnetic circuit structure comprises a coil, an L-shaped armature, an L-shaped yoke and magnetic steel; the L-shaped armature is arranged on the side edge of the L-shaped yoke after rotating 180 degrees and forms a frame-shaped outline together, and a preset first gap is arranged at the joint of the L-shaped armature and the L-shaped yoke at two opposite corners of the frame; the coil is matched on one side of the L shape of the L-shaped yoke, and one end of the magnetic steel is connected with one side of the L shape of the L-shaped yoke; one side of the L shape of the L-shaped armature is matched with the other end of the magnetic steel to perform seesaw type movement, so that a bistable magnetic circuit is formed between the magnetic steel and the L-shaped armature and the L-shaped yoke with asymmetric part structures, and the two stable states of the bistable magnetic circuit are switched by utilizing the excitation of the coil. The utility model discloses both reduced part quantity, also reduced manufacturing procedure, had product structure and processing technology simple, the cost of manufacture is low and the convenient characteristics of assembly.

Description

Clapper type bistable magnetic circuit structure and magnetic latching relay

Technical Field

The utility model relates to a relay technical field especially relates to a clap box-like bistable magnetic circuit structure and magnetic latching relay.

Background

The bistable magnetic circuit structure is characterized in that magnetic steel is added into the magnetic circuit structure, a bidirectional magnetic field loop is formed by the magnetic steel in the opening and closing states of the moving contact and the fixed contact of the relay, the action of a magnetic field loop on a moving component (such as an armature) generates a holding force effect to further realize the opening and closing holding states of the moving contact and the fixed contact of the relay, a coil is only excited at the moment of opening and closing the moving contact and the fixed contact, the coil does not need to be electrified and held, and the bistable magnetic circuit structure has a good energy-saving effect.

Fig. 1 is a schematic view of a clapper bistable magnetic circuit structure of the prior art, which includes, as shown in fig. 1, a coil former 101, an enamel wire 102, a core 103, two yokes 104 and an armature portion 105; the enameled wire 102 is wound on the coil frame 101, the iron core 103 is arranged in an iron core mounting hole of the coil frame 101, one ends of two yokes 104 are respectively fixed with two ends of the iron core 103, the other ends of the two yokes 104 are respectively used for matching with the armature part 105, the armature part 105 is integrally formed by injection molding and comprises two armatures 106 and a magnetic steel, the magnetic steel is positioned between the two armatures 106 and is coated in a plastic part 107, two ends of the two armatures 106 respectively extend out of the plastic part 107 to form an I-shaped integral part, the other ends of the two yokes 104 are respectively matched in notches on two sides of the I-shaped integral part, the middle of the armature part 105 can be rotatably arranged, and when the armature part 105 rotates, the extended armatures 106 on two sides of the armature part 105 are matched with the yokes 104 in a matched manner in a flapping manner. The clapper type bistable magnetic circuit structure comprises 8 parts except for the coil, in the assembling process, the yoke 104 and the iron core 103 need to be riveted, the armature part 105 needs to be integrally injection-molded, and the assembling and forming process of the whole magnetic circuit structure is relatively complex; in addition, in order to ensure that the action voltage and the reset voltage are basically equal, the shock resistance of the moving contact and the static contact of the relay under the open state and the closed state is basically the same, the magnetic circuit structure is made into a symmetrical structure, namely the armature part 105 is made into a symmetrical structure, the yoke 104 is also designed into a symmetrical structure, the force arms of the coils at two sides after being electrified during the action and the reset are ensured to be the same through the symmetrical structure, and therefore the rotating moments of the two sides around the fulcrum during the action and the reset are ensured to be the same; therefore, the defects of complex product structure, multiple parts, complex processing technology, high manufacturing cost and complex assembly are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a clapper formula bistable magnetic circuit structure and magnetic latching relay, through institutional advancement, both reduced part quantity, also reduced manufacturing procedure, have product structure and processing technology simple, the cost of manufacture is low and the convenient characteristics of assembly.

The utility model provides a technical scheme that its technical problem adopted is: a clapper type bistable magnetic circuit structure comprises a coil, an L-shaped armature, an L-shaped yoke and magnetic steel; the L-shaped armature is arranged on the side edge of the L-shaped yoke after rotating 180 degrees and jointly forms a frame-shaped outline, and a preset first gap is arranged at the joint of the L-shaped armature and the L-shaped yoke at two opposite corners of the frame; the coil is matched on one side of the L shape of the L-shaped yoke, and one end of the magnetic steel is connected with one side of the L shape of the L-shaped yoke; one side of the L shape of the L-shaped armature is matched with the other end of the magnetic steel to perform seesaw type movement, so that a bistable magnetic circuit is formed between the magnetic steel and the L-shaped armature and the L-shaped yoke with asymmetric part structures, and the two stable states of the bistable magnetic circuit are switched by utilizing the excitation of the coil.

One side of the L shape of the L-shaped armature and one side of the L shape of the L-shaped yoke are respectively positioned at two opposite sides of the frame shape; one end of the magnetic steel is vertically connected with one side of the L shape of the L-shaped yoke in the frame shape formed by the L-shaped armature and the L-shaped yoke, and the end faces of the two ends of the magnetic steel are magnetic pole faces.

The inner side surface of the tail end of one side of the L shape of the L-shaped armature corresponds to the end surface of the other side of the L shape of the L-shaped yoke, and the inner side surface of the tail end of one side of the L shape of the L-shaped yoke corresponds to the end surface of the other side of the L shape of the L-shaped armature.

The bistable magnetic circuit is composed of magnetic steel, a first magnetic circuit consisting of one section of one side of the L shape of the L-shaped armature, the other section of the L shape of the L-shaped yoke and one section of one side of the L shape of the L-shaped yoke, and a second magnetic circuit consisting of the magnetic steel, the other section of one side of the L shape of the L-shaped armature, the other section of the L shape of the L-shaped armature and the other section of one side of the L shape of the L-shaped yoke.

In the bistable magnetic circuit, when the inner side surface of the tail end of one side of the L shape of the L-shaped armature is attached to the end surface of the other side of the L shape of the L-shaped yoke so that the working air gap at one of two opposite diagonal angles of the frame shape is smaller than the working air gap at the other diagonal angle, the L-shaped armature is in a stable state; when the inner side surface of the end of one side of the L shape of the L-shaped yoke is attached to the end surface of the other side of the L shape of the L-shaped armature, so that the working air gap at the other one of two opposite diagonal corners of the frame shape is smaller than the working air gap at the one diagonal corner, the L-shaped armature is in the other stable state.

The magnetic steel is positioned between the middle of one side of the L shape of the L-shaped yoke and the middle of one side of the L shape of the L-shaped armature.

The length dimension of one side of the L shape of the L-shaped armature is larger than that of the other side of the L shape of the L-shaped armature; one side of the L shape of the L-shaped yoke is longer than the other side of the L shape of the L-shaped yoke.

The coil comprises a coil frame and an enameled wire wound on a winding window of the coil frame, wherein one side of an L shape of the L-shaped yoke is inserted into an iron core mounting hole of the coil frame, a magnetic steel mounting hole facing one side of the L shape of the L-shaped armature is formed in the middle of the winding window of the coil frame, the magnetic steel mounting hole is communicated with the iron core mounting hole, and the magnetic steel is matched in the magnetic steel mounting hole of the coil frame.

One side of the L shape of the L-shaped armature iron can be asway matched with the L-shaped yoke iron by taking the other end of the magnetic steel as a rotation supporting point, so that seesaw type movement is realized.

The end face of the other end of the magnetic steel is convexly provided with a first convex part in an integrated forming mode, the first convex part of the magnetic steel abuts against the inner side face of one side of the L-shaped armature, and the other side of the L-shaped armature can be matched with the L-shaped yoke in a swinging mode by taking the other end of the magnetic steel as a rotating supporting point.

And a second convex part is convexly formed and extended on the inner side surface of one of the L-shaped sides of the L-shaped armature, and the second convex part of one of the L-shaped sides of the L-shaped armature abuts against the end surface of the other end of the magnetic steel, so that one of the L-shaped sides of the L-shaped armature can be asway matched with the L-shaped yoke by taking the other end of the magnetic steel as a rotation supporting point.

And a magnetic conducting piece is further arranged between the other end of the magnetic steel and one of the edges of the L shape of the L-shaped armature, and a third convex part is convexly formed and extended at one end of the magnetic conducting piece connected with one of the edges of the L shape of the L-shaped armature, so that one of the edges of the L shape of the L-shaped armature can be asway matched with the L-shaped yoke by taking the corresponding end of the magnetic conducting piece as a rotating supporting point.

The two sides of the width of one side of the L shape of the L-shaped armature are respectively provided with a limit rotating shaft, and the central line of the limit rotating shaft is vertically intersected with a connecting line or an extension line from one end to the other end of the magnetic steel and passes through the rotating supporting point; the coil frame is provided with a fourth convex part extending towards one side of the L shape of the L-shaped armature, the fourth convex part is provided with a groove matched with a limiting rotating shaft on one side of the L shape of the L-shaped armature, and the limiting rotating shaft of the L-shaped armature can be rotatably matched in the groove of the fourth convex part of the coil frame in a limiting way.

The central line of the limiting rotating shaft coincides with the rotating supporting point.

And the groove of the fourth convex part of the coil rack is in arc-shaped fit with the limiting rotating shaft of the L-shaped armature.

The rotating shaft of the L-shaped armature is a fifth convex part which is integrally formed on two sides of the width of one side of the L shape of the L-shaped armature.

One side of the L shape of the L-shaped armature is partially coated with a plastic part, and a rotating shaft of the L-shaped armature is a sixth convex part which is integrally formed on the plastic part and corresponds to two side edges of the width of one side of the L shape of the L-shaped armature.

One side of the L shape of the L-shaped armature is also connected with a pressure spring, and one side of the L shape of the L-shaped armature is connected with the coil rack through the pressure spring.

The pressure spring comprises a main sheet body and a wing piece, wherein two sides of the main sheet body are bent and protrude towards one side of the main sheet body, one side of the L-shaped armature, which is back to one side of the L-shaped yoke, protrudes outwards and is provided with a protruding bract, the main sheet body is provided with a first clamping hole, and the first clamping hole of the main sheet body is correspondingly matched with the protruding bract at one side of the L-shaped armature; the fins of the pressure spring extend to the coil rack and are connected with the coil rack.

The second clamping holes of the fins of the pressure spring are matched with the clamping blocks of the coil rack in a clamping mode.

A second clamping hole of the wing piece of the pressure spring is long-strip-shaped, and a clamping piece is arranged on one side of the second clamping hole; an inclined surface is arranged on one side of the fixture block facing the main sheet body of the pressure spring, and a straight surface is arranged on one side of the fixture block facing away from the main sheet body of the pressure spring; the clamping piece of the second clamping hole is matched with the straight surface of the clamping block.

One side of the L shape of the L-shaped armature, which faces away from one side of the L shape of the L-shaped yoke, is provided with a recessed part, the pressure spring is provided with an elastic tongue piece corresponding to the recessed part, and the elastic tongue piece of the pressure spring is abutted against the recessed part of one side of the L shape of the L-shaped armature.

A preset second gap is arranged between one side of the L shape of the L-shaped armature and the other end of the magnetic steel; two sides of the L-shaped width of the L-shaped armature are correspondingly provided with rotating shafts at the extension line of the connecting line from one end of the magnetic steel to the other end of the magnetic steel, so that the rotating shafts are utilized to realize seesaw type movement; the coil rack is provided with a supporting part for supporting the rotating shaft of the L-shaped armature.

A magnetic latching relay comprises a base, a static spring part, a movable spring part, a pushing clamp and the clapper type bistable magnetic structure, wherein the clapper type bistable magnetic structure, the static spring part and the movable spring part are respectively arranged on the base, and the pushing clamp is connected between one side of an L shape of an L-shaped armature of the clapper type bistable magnetic structure and a movable spring of the movable spring part.

The base and the coil rack of the coil of the clapper type bistable magnetic circuit structure are an integral piece formed by injection molding; the base is also provided with a through hole which is convenient for the L-shaped armature iron to be arranged.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses owing to adopted the coil, an L shape armature, L shape yoke and a magnet steel constitute clapping formula bistable magnetic circuit structure, only three part except the coil, and the assembly between the three part is fairly convenient, need not need to the yoke like prior art, the iron core rivets the connection, also need not need not mould plastics armature part whole like prior art, especially adopt the part structure's of L shape armature and L shape yoke asymmetry, also can form the turning moment of symmetry, the drawback that traditional bistable magnetic circuit structure brought with symmetrical structure has been solved, make parts machining simpler, the part quantity had both been reduced, machining processes has also been reduced, product structure and processing technology are simple, the cost of manufacture is low and the convenient characteristics of assembly.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the clapper type bistable magnetic circuit structure and the magnetic latching relay of the present invention are not limited to the embodiments.

Drawings

FIG. 1 is a schematic diagram of a clapper bistable magnetic circuit structure of the prior art;

fig. 2 is a cross-sectional view of a clapper bistable magnetic circuit structure according to a first embodiment of the present invention;

fig. 3 is a cross-sectional view of a clapper bistable magnetic circuit structure (in an unassembled state of the armature, the yoke, the magnetic steel and the coil) according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of a coil according to a first embodiment of the present invention;

fig. 5 is a schematic diagram of a design state of a clapper bistable magnetic circuit structure according to a first embodiment of the present invention;

fig. 6 is a schematic magnetic circuit diagram of a clapper bistable magnetic circuit structure according to a first embodiment of the present invention in one state;

fig. 7 is a schematic magnetic circuit diagram of a clapper bistable magnetic circuit structure according to a first embodiment of the present invention in another state;

fig. 8 is a schematic perspective view of an L-shaped armature according to a first embodiment of the present invention;

fig. 9 is a schematic perspective view of a magnetic latching relay (not including a housing) according to a first embodiment of the present invention;

fig. 10 is an exploded perspective view of a magnetic latching relay according to a first embodiment of the present invention;

fig. 11 is a cross-sectional view of a magnetic latching relay according to a first embodiment of the present invention;

fig. 12 is a simplified schematic diagram of a clapper bistable magnetic circuit structure according to a second embodiment of the present invention;

fig. 13 is a simple schematic view of a clapper bistable magnetic circuit structure according to a third embodiment of the present invention;

fig. 14 is a schematic perspective view of an L-shaped armature according to a fourth embodiment of the present invention;

fig. 15 is a simplified schematic diagram of a clapper bistable magnetic circuit structure according to a fifth embodiment of the present invention;

fig. 16 is a schematic perspective view of a clapper bistable magnetic circuit structure according to a sixth embodiment of the present invention;

fig. 17 is a side view of a clapper bistable magnetic circuit structure according to a sixth embodiment of the present invention;

fig. 18 is an exploded schematic view of a clapper bistable magnetic circuit structure according to a sixth embodiment of the present invention;

fig. 19 is a schematic view illustrating the cooperation of the pressure spring and the L-shaped armature of the clapper type bistable magnetic circuit structure according to the sixth embodiment of the present invention;

fig. 20 is a schematic perspective view of an L-shaped armature of a clapper bistable magnetic circuit structure according to a sixth embodiment of the present invention;

fig. 21 is a schematic perspective view of a compression spring of a clapper bistable magnetic circuit structure according to a sixth embodiment of the present invention.

Detailed Description

Example one

Referring to fig. 2 to 8, a clapper type bistable magnetic circuit structure of the present invention includes a coil 1, an L-shaped armature 2, an L-shaped yoke 3 and a magnetic steel 4; one side 31 of the L-shaped yoke 3 is vertically arranged, the other side 32 of the L-shaped yoke 3 is horizontally arranged, and the other side 32 of the L-shaped yoke 3 is positioned at the upper part; the L-shaped armature 2 is arranged on the side edge of the L-shaped yoke 3 after rotating 180 degrees and forms a frame-shaped outline together, namely one edge 21 of the L-shaped armature 2 is vertically arranged, the other edge 22 of the L-shaped armature 2 is horizontally arranged, and the other edge 22 of the L-shaped armature 2 is positioned at the lower part; at two opposite corners of the frame shape, the joint of the L-shaped armature 2 and the L-shaped yoke 4 is provided with a preset first gap, namely an upper gap H1 and a lower gap H2 (as shown in FIG. 5); the coil 1 is matched with one side 31 of the L shape of the L-shaped yoke 3, namely the vertically arranged side 31, and one end of the magnetic steel 4 is connected with one side 31 of the L shape of the L-shaped yoke 3; one side 21 of the L shape of the L-shaped armature 2, which is vertically arranged, is matched with the other end of the magnetic steel 4 to perform seesaw type movement, so that a bistable magnetic circuit is formed between the magnetic steel 4 and the L-shaped armature 2 and the L-shaped yoke 3 with asymmetric part structures, and the two stable states of the bistable magnetic circuit are switched by utilizing the excitation of a coil, namely, the clapping type action is realized at the two ends of the L-shaped armature 2 under the excitation of the coil 1. In a design state (as shown in fig. 5), the L-shaped armature 2 and the L-shaped yoke 3 form a frame-shaped profile, and an upper gap H1 and a lower gap H2 must be provided at two opposite diagonal positions of the frame, so that the L-shaped armature 2 can perform a seesaw motion, and in an ideal state, because the upper gap H1 and the lower gap H2 are the same, and the L-shaped armature 2 is in a balanced state, two gaps exist between the L-shaped armature 2 and the L-shaped yoke 3, but in an assembly state, it is difficult to make the upper gap H1 and the lower gap H2 the same, so that after the L-shaped armature 2 is assembled, because the upper gap H1 and the lower gap H2 which are caused in the assembly are different, under the action of the magnetic steel, only one larger gap (i.e. the sum of the upper gap H1 and the lower gap H2) exists between the L-shaped armature 2 and the L-shaped yoke 3, and the other gap which is originally designed will disappear, so that there is only a large gap between the L-shaped armature 2 and the L-shaped yoke 3.

In the present embodiment, one of the sides 21 of the L-shape of the L-shaped armature 2 and one of the sides 31 of the L-shape of the L-shaped yoke 3 are respectively located on two opposite sides of the frame shape; one end of the magnetic steel 4 is vertically connected with one side 31 of the L shape of the L-shaped yoke 3 in the frame shape surrounded by the L-shaped armature and the L-shaped yoke, when in a design state (as shown in fig. 5), the magnetic steel 4 is respectively perpendicular to one side 21 of the L shape of the L-shaped armature 2 and one side 31 of the L shape of the L-shaped yoke 3, the end surfaces of two ends of the magnetic steel 4 are magnetic pole surfaces, one surface of the magnetic steel 4, which is close to one side 31 of the L shape of the L-shaped yoke 3, is an N pole, and one surface of the magnetic steel 4, which is close to one side 21 of the L shape of the L-shaped armature 2, is an S pole (as shown in fig. 6 and 7).

In the present embodiment, the inner side surface of the end of one side 21 of the L shape of the L-shaped armature 2 corresponds to the end surface of the other side 32 of the L shape of the L-shaped yoke 3, and the inner side surface of the end of one side 31 of the L shape of the L-shaped yoke 3 corresponds to the end surface of the other side 22 of the L shape of the L-shaped armature 2.

In the present embodiment, the bistable magnetic circuit is composed of a magnetic steel 4, a first magnetic circuit composed of a section of one side 21 of the L shape of the L-shaped armature 2, another section 32 of the L shape of the L-shaped yoke 3, and a section of one side 31 of the L shape of the L-shaped yoke 3, and a second magnetic circuit composed of a magnetic steel 4, another section of one side 21 of the L shape of the L-shaped armature 2, another section 22 of the L shape of the L-shaped armature 2, and another section of one side 31 of the L shape of the L-shaped yoke 3.

In the present embodiment, in the bistable magnetic circuit, when the inner side surface of the end of one side 21 of the L shape of the L-shaped armature 2 is attached to the end surface of the other side 32 of the L shape of the L-shaped yoke 3 so that the working air gap at one of two opposite corners of the frame shape is smaller than the working air gap at the other corner (the upper working air gap is smaller than the lower working air gap as shown in fig. 6), the L-shaped armature 2 is in a stable state; when the inner side surface of the end of one side 31 of the L shape of the L-shaped yoke 3 abuts against the end surface of the other side 22 of the L shape of the L-shaped armature 2 so that the working air gap at the other one of the two opposite corners of the frame shape is smaller than the working air gap at the one corner (the lower working air gap is smaller than the upper working air gap as shown in fig. 7), the L-shaped armature 2 is in the other stable state. The inner side surface of the end of one side 21 of the L shape of the L-shaped armature 2 and the end surface of the other side 32 of the L shape of the L-shaped yoke 3 are working pole surfaces which are matched with each other, in the embodiment, the inner side surface of the end of one side 21 of the L shape of the L-shaped armature 2 is set to be a certain inclined surface so as to be matched and attached with the end surface of the other side 32 of the L shape of the L-shaped yoke 3, and of course, the end surface of the other side 32 of the L shape of the L-shaped yoke 3 can be set to be an inclined surface; similarly, the inner side surface of the end of one side 31 of the L shape of the L-shaped yoke 3 and the end surface of the other side 22 of the L shape of the L-shaped armature 2 are mutually matched working pole surfaces, and one of the working pole surfaces is provided with an inclined surface to facilitate matching.

In the present embodiment, the magnetic steel 4 is located between the middle of one side 31 of the L shape of the L-shaped yoke 3 and the middle of one side 21 of the L shape of the L-shaped armature 2.

In the embodiment, the length dimension of one side 21 of the L shape of the L-shaped armature 2 is larger than that of the other side 22 of the L shape of the L-shaped armature 2; one side 31 of the L-shape of the L-yoke 3 has a length dimension larger than that of the other side 32 of the L-shape of the L-yoke 3.

In this embodiment, the coil 1 includes a coil frame 12 and an enameled wire 11 wound around a winding window of the coil frame, one side 31 of the L-shape of the L-shaped yoke 3 is inserted into an iron core mounting hole 121 of the coil frame 12, a magnetic steel mounting hole 123 facing one side 21 of the L-shape of the L-shaped armature 2 is disposed in the middle of the winding window of the coil frame 12, the magnetic steel mounting hole 123 is communicated with the iron core mounting hole 121, and the magnetic steel 4 is fitted into the magnetic steel mounting hole 123 of the coil frame.

In this embodiment, one side 21 of the L shape of the L-shaped armature 2 is swingably engaged with the L-shaped yoke 3 using the other end of the magnetic steel 4 as a rotation supporting point, thereby realizing a seesaw type motion.

In this embodiment, the inner side surface of one side 21 of the L shape of the L-shaped armature 2 is integrally formed and protruded with a second protrusion 23, and the second protrusion 23 of one side 21 of the L shape of the L-shaped armature 2 abuts against the end surface of the other end of the magnetic steel 4, so that the one side 21 of the L shape of the L-shaped armature 2 can be swingably matched with the L-shaped yoke 3 by using the other end of the magnetic steel 4 as a rotation supporting point.

In this embodiment, the two side edges of the width of one side 21 of the L shape of the L-shaped armature 2 are respectively provided with a limit rotating shaft 24, the limit rotating shaft 24 is used for limiting the L-shaped armature 2, and the central line of the limit rotating shaft 24 is perpendicularly intersected with the connecting line or the extension line from one end to the other end of the magnetic steel 4 and passes through the rotation supporting point; the coil former 12 is provided with a fourth convex part 122 extending towards one side of the L shape of the L-shaped armature, the fourth convex part 122 is provided with a groove 124 adapted to the limit rotating shaft 24 of one side 21 of the L shape of the L-shaped armature, and the limit rotating shaft 24 of the L-shaped armature 2 is rotatably matched in the groove 124 of the fourth convex part 122 of the coil former 12. The best effect is that the central line of the limiting rotating shaft is coincided with the rotating supporting point.

In this embodiment, the groove 124 of the fourth protrusion 122 of the coil frame 12 is in arc-shaped fit with the limit rotation shaft 24 of the L-shaped armature.

In the present embodiment, the rotating shaft 24 of the L-shaped armature 2 is a fifth convex portion integrally formed on two sides of the width of one side 21 of the L-shape of the L-shaped armature 2.

Referring to fig. 6, in a state of the magnetic circuit structure, when the coil is not energized and excited, the magnetic steel 4 forms two magnetic circuits in parallel through the magnetic steel magnetic circuit S1 and the magnetic steel magnetic circuit S2, wherein an upper working air gap of the magnetic steel magnetic circuit S1 is smaller than a lower working air gap of the magnetic steel magnetic circuit S2, a magnetic resistance of the magnetic steel magnetic circuit S1 is minimum, a magnetic flux is maximum, and therefore the armature 2 is kept in a state of fig. 6; when the magnetic circuit needs to be switched to another state, excitation in one direction is applied to the coil, the magnetic flux of the coil magnetic circuit S3 is superposed with the magnetic flux of the magnetic steel magnetic circuit S2 in the lower working air gap and is weakened with the magnetic steel magnetic circuit S1; when the magnetic flux in the lower working air gap is larger than that in the upper working air gap, the armature 2 switches the state shown in fig. 7, and after the excitation of the coil is removed, the magnetic resistance of the magnetic steel magnetic circuit S2 is minimum, the magnetic flux is maximum, and the armature 2 is kept in the state shown in fig. 7; when the state shown in fig. 6 needs to be switched back, a reverse direction excitation is applied to the coil, the magnetic flux of the coil magnetic circuit S3 is superposed with the magnetic flux of the magnetic steel magnetic circuit S1 in the upper working air gap and is weakened with the magnetic steel magnetic circuit S2; when the magnetic flux in the upper working air gap is larger than that in the lower working air gap, the armature 2 is switched back to the state shown in fig. 6, and after the excitation of the coil is removed, the magnetic resistance of the magnetic steel magnetic circuit S1 is minimum, the magnetic flux is maximum, and the armature 2 is kept in the state shown in fig. 6.

Referring to fig. 2 to 11, the magnetic latching relay of the present invention includes a base 5, a static spring portion 6, a movable spring portion 7, a pushing clip 8 and the clapping type bistable magnetic structure, wherein the clapping type bistable magnetic structure, the static spring portion 6 and the movable spring portion 7 are respectively mounted on the base 5, and the pushing clip 8 is connected between one of the sides 21 of the L-shape of the L-shaped armature 2 of the clapping type bistable magnetic structure and the movable spring of the movable spring portion; wherein, the base 5 and the coil rack 12 are integral parts which are integrally injection molded, and the base 5 is provided with a through hole 51 which is convenient for the L-shaped armature iron to be arranged; the pushing card 8 is connected between one side 21 of the L shape of the L-shaped armature 2 and the movable spring 71 of the movable spring part 7, seventh convex parts 25 are arranged on two sides of the width of one side 21 of the L shape of the L-shaped armature 2, the seventh convex parts 25 are arranged above the limit rotating shaft 24, and the seventh convex parts 25 of the L-shaped armature 2 are used for being matched with the pushing card 8 so as to drive the pushing card 8 to move. During assembly, the L-shaped yoke 3 is directly inserted into the iron core mounting hole 121 of the coil rack from top to bottom by utilizing one side 21 of the L shape, the magnetic steel 4 can also be directly inserted into the magnetic steel mounting hole 123 of the coil rack, and the L-shaped armature 2 can be directly installed into the base and the coil rack from top to bottom without riveting the yoke and the iron core and integrally injecting the armature part as in the prior art.

The utility model discloses a clapper bistable magnetic structure and magnetic latching relay, adopted coil 1, a L shape armature 2, a L shape yoke 3 and a magnet steel 4 constitute clapper bistable magnetic structure, only three part except the coil, and the assembly between the three part is fairly convenient, need not need to the yoke as prior art, the iron core rivets the connection, also need not need not mould plastics armature part whole as prior art, especially adopt the asymmetry of part structure, make the parts machining simpler, part quantity has both been reduced, machining processes has also been reduced, product structure and processing technology are simple, the cost of manufacture is low and the convenient characteristics of assembly.

Example two

Referring to fig. 12, a clapper type bistable magnetic circuit structure and a magnetic latching relay of the present invention, different from the first embodiment, are that the second protrusion is not disposed on the inner side of one of the sides 21 of the L-shape of the L-shaped armature 2, but the first protrusion 41 is protruded and extended integrally on the end surface of the other end of the magnetic steel 4, and the first protrusion 41 of the magnetic steel 4 abuts against the inner side of one of the sides 21 of the L-shape of the L-shaped armature 2, so that one of the sides 21 of the L-shape of the L-shaped armature 2 can be swingably matched with the L-shaped yoke 3 by using the other end of the magnetic steel 4 as a rotation supporting point.

EXAMPLE III

Referring to fig. 13, a clapper type bistable magnetic circuit structure and a magnetic latching relay according to the present invention are different from the first embodiment in that a second protrusion is not disposed on an inner side surface of one of the L-shaped sides 21 of the L-shaped armature 2, a magnetic conductive member 42 is further disposed between the other end of the magnetic steel 4 and one of the L-shaped sides 21 of the L-shaped armature 2, and a third protrusion 421 is protruded and extended from one end of the magnetic conductive member 42 connected to one of the L-shaped sides 21 of the L-shaped armature, so that the one of the L-shaped sides 21 of the L-shaped armature 2 is swingably engaged with the L-shaped yoke 3 using a corresponding end of the magnetic conductive member 42 as a rotation supporting point.

Example four

Referring to fig. 14, a difference between the clapper type bistable magnetic circuit structure and the magnetic latching relay of the present invention and the first embodiment is that one side of the L-shape of the L-shaped armature 2 is further partially covered with a plastic member 26, and a rotating shaft of the L-shaped armature is a sixth protrusion 27 integrally formed on the plastic member 26 and corresponding to two side edges of the width of one side 21 of the L-shape of the L-shaped armature.

EXAMPLE five

Referring to fig. 15, a difference between the clapper type bistable magnetic circuit structure and the magnetic latching relay of the present invention and the first embodiment is that a preset second gap H3 is provided between one side 21 of the L shape of the L-shaped armature 2 and the other end of the magnetic steel 4; two sides of the L-shaped width of the L-shaped armature 2 are correspondingly provided with rotating shafts 28 at the extension lines of the connecting lines from one end to the other end of the magnetic steel, so that the rotating shafts 28 are utilized to realize seesaw type movement; the coil former 12 is provided with a support 125 for supporting the rotary shaft 28 of the L-shaped armature 2, and the support 125 in this embodiment is a semi-closed sleeve.

In the embodiment, the rotating shaft is directly arranged on the L-shaped armature 2, or a plastic part is coated on a part of one side of the L-shape of the L-shaped armature 2, and the rotating shaft is integrally formed by the plastic part.

EXAMPLE six

Referring to fig. 16 to 21, a difference between the clapper type bistable magnetic circuit structure and the magnetic latching relay of the present invention and the first embodiment is that a compression spring 9 is further connected to one side 21 of the L shape of the L-shaped armature 2, and the one side 21 of the L shape of the L-shaped armature 2 is connected to the coil frame 12 through the compression spring 9. That is, in the present embodiment, the position of the L-shaped armature 2 is limited by using the compression spring 9 instead of the limiting rotation shaft.

In this embodiment, the pressure spring 9 includes a main body 91 and a tab 92 bent from two sides of the main body and protruding toward one side of the main body, a surface of one side of the L-shape of the L-shaped armature 2 facing away from one side of the L-shape of the L-shaped yoke is provided with a protrusion 291 protruding outward, the main body 91 is provided with a first locking hole 911, and the first locking hole 911 of the main body 91 is correspondingly matched with the protrusion 291 of one side 21 of the L-shape of the L-shaped armature 2; the tabs 92 of the compression spring 9 extend towards the coil support 12 and are connected to the coil support 12. The main plate 91 of the pressure spring 9 is flexible, so that after the pressure spring 9 is connected with one side 21 of the L shape of the L-shaped armature 2, the one side 21 of the L shape of the L-shaped armature 2 can perform seesaw movement.

In this embodiment, the wing pieces 92 of the compression spring 9 are provided with second locking holes 921, the corresponding positions of the coil frame 12 are provided with locking blocks 126, and the second locking holes 921 of the wing pieces 92 of the compression spring 9 are locked and matched with the locking blocks 126 of the coil frame 12.

In this embodiment, the second locking hole 921 of the wing 92 of the pressure spring 9 is elongated, and a locking piece 922 is disposed on one side of the second locking hole 921; a slope 1261 is arranged on one side of the fixture block 126 facing the main sheet body of the compression spring, and a straight surface 1262 is arranged on one side of the fixture block 126 opposite to the main sheet body of the compression spring; the clamping piece 922 of the second clamping hole 921 is matched with the straight surface 1262 of the clamping block 126.

In this embodiment, a recessed portion 292 is formed on a surface of one side 21 of the L shape of the L-shaped armature 2 facing away from one side of the L shape of the L-shaped yoke, the compression spring 9 is provided with an elastic tongue 93 corresponding to the recessed portion 292, and the elastic tongue 93 of the compression spring 9 abuts against the recessed portion 292 on one side of the L shape of the L-shaped armature.

The foregoing is illustrative of the preferred embodiment of the present 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 limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (25)

1. A clapper type bistable magnetic circuit structure is characterized in that: comprises a coil, an L-shaped armature, an L-shaped yoke and a magnetic steel; the L-shaped armature is arranged on the side edge of the L-shaped yoke after rotating 180 degrees and jointly forms a frame-shaped outline, and a preset first gap is arranged at the joint of the L-shaped armature and the L-shaped yoke at two opposite corners of the frame; the coil is matched on one side of the L shape of the L-shaped yoke, and one end of the magnetic steel is connected with one side of the L shape of the L-shaped yoke; one side of the L shape of the L-shaped armature is matched with the other end of the magnetic steel to perform seesaw type movement, so that a bistable magnetic circuit is formed between the magnetic steel and the L-shaped armature and the L-shaped yoke with asymmetric part structures, and the two stable states of the bistable magnetic circuit are switched by utilizing the excitation of the coil.

2. The clapper bistable magnetic circuit structure of claim 1, wherein: one side of the L shape of the L-shaped armature and one side of the L shape of the L-shaped yoke are respectively positioned at two opposite sides of the frame shape; one end of the magnetic steel is vertically connected with one side of the L shape of the L-shaped yoke in the frame shape formed by the L-shaped armature and the L-shaped yoke, and the end faces of the two ends of the magnetic steel are magnetic pole faces.

3. The clapper bistable magnetic circuit structure of claim 2, wherein: the inner side surface of the tail end of one side of the L shape of the L-shaped armature corresponds to the end surface of the other side of the L shape of the L-shaped yoke, and the inner side surface of the tail end of one side of the L shape of the L-shaped yoke corresponds to the end surface of the other side of the L shape of the L-shaped armature.

4. The clapper bistable magnetic circuit structure of claim 3, wherein: the bistable magnetic circuit is composed of magnetic steel, a first magnetic circuit consisting of one section of one side of the L shape of the L-shaped armature, the other section of the L shape of the L-shaped yoke and one section of one side of the L shape of the L-shaped yoke, and a second magnetic circuit consisting of the magnetic steel, the other section of one side of the L shape of the L-shaped armature, the other section of the L shape of the L-shaped armature and the other section of one side of the L shape of the L-shaped yoke.

5. The clapper bistable magnetic circuit structure of claim 4, wherein: in the bistable magnetic circuit, when the inner side surface of the tail end of one side of the L shape of the L-shaped armature is attached to the end surface of the other side of the L shape of the L-shaped yoke so that the working air gap at one of two opposite diagonal angles of the frame shape is smaller than the working air gap at the other diagonal angle, the L-shaped armature is in a stable state; when the inner side surface of the end of one side of the L shape of the L-shaped yoke is attached to the end surface of the other side of the L shape of the L-shaped armature, so that the working air gap at the other one of two opposite diagonal corners of the frame shape is smaller than the working air gap at the one diagonal corner, the L-shaped armature is in the other stable state.

6. A clapper bistable magnetic circuit structure according to claim 2, 3, 4 or 5, wherein: the magnetic steel is positioned between the middle of one side of the L shape of the L-shaped yoke and the middle of one side of the L shape of the L-shaped armature.

7. The clapper bistable magnetic circuit structure of claim 6, wherein: the length dimension of one side of the L shape of the L-shaped armature is larger than that of the other side of the L shape of the L-shaped armature; one side of the L shape of the L-shaped yoke is longer than the other side of the L shape of the L-shaped yoke.

8. The clapper bistable magnetic circuit structure of claim 2, wherein: the coil comprises a coil frame and an enameled wire wound on a winding window of the coil frame, wherein one side of an L shape of the L-shaped yoke is inserted into an iron core mounting hole of the coil frame, a magnetic steel mounting hole facing one side of the L shape of the L-shaped armature is formed in the middle of the winding window of the coil frame, the magnetic steel mounting hole is communicated with the iron core mounting hole, and the magnetic steel is matched in the magnetic steel mounting hole of the coil frame.

9. The clapper bistable magnetic circuit structure of claim 8, wherein: one side of the L shape of the L-shaped armature iron can be asway matched with the L-shaped yoke iron by taking the other end of the magnetic steel as a rotation supporting point, so that seesaw type movement is realized.

10. The clapper bistable magnetic circuit structure of claim 9, wherein: the end face of the other end of the magnetic steel is convexly provided with a first convex part in an integrated forming mode, the first convex part of the magnetic steel abuts against the inner side face of one side of the L-shaped armature, and the other side of the L-shaped armature can be matched with the L-shaped yoke in a swinging mode by taking the other end of the magnetic steel as a rotating supporting point.

11. The clapper bistable magnetic circuit structure of claim 9, wherein: and a second convex part is convexly formed and extended on the inner side surface of one of the L-shaped sides of the L-shaped armature, and the second convex part of one of the L-shaped sides of the L-shaped armature abuts against the end surface of the other end of the magnetic steel, so that one of the L-shaped sides of the L-shaped armature can be asway matched with the L-shaped yoke by taking the other end of the magnetic steel as a rotation supporting point.

12. The clapper bistable magnetic circuit structure of claim 9, wherein: and a magnetic conducting piece is further arranged between the other end of the magnetic steel and one of the edges of the L shape of the L-shaped armature, and a third convex part is convexly formed and extended at one end of the magnetic conducting piece connected with one of the edges of the L shape of the L-shaped armature, so that one of the edges of the L shape of the L-shaped armature can be asway matched with the L-shaped yoke by taking the corresponding end of the magnetic conducting piece as a rotating supporting point.

13. A clapper bistable magnetic circuit structure according to claim 9, 10, 11 or 12, wherein: the two sides of the width of one side of the L shape of the L-shaped armature are respectively provided with a limit rotating shaft, and the central line of the limit rotating shaft is vertically intersected with a connecting line or an extension line from one end to the other end of the magnetic steel and passes through the rotating supporting point; the coil frame is provided with a fourth convex part extending towards one side of the L shape of the L-shaped armature, the fourth convex part is provided with a groove matched with a limiting rotating shaft on one side of the L shape of the L-shaped armature, and the limiting rotating shaft of the L-shaped armature can be rotatably matched in the groove of the fourth convex part of the coil frame in a limiting way.

14. The clapper bistable magnetic circuit structure of claim 13, wherein: the central line of the limiting rotating shaft coincides with the rotating supporting point.

15. The clapper bistable magnetic circuit structure of claim 13, wherein: and the groove of the fourth convex part of the coil rack is in arc-shaped fit with the limiting rotating shaft of the L-shaped armature.

16. The clapper bistable magnetic circuit structure of claim 13, wherein: the rotating shaft of the L-shaped armature is a fifth convex part which is integrally formed on two sides of the width of one side of the L shape of the L-shaped armature.

17. The clapper bistable magnetic circuit structure of claim 13, wherein: one side of the L shape of the L-shaped armature is partially coated with a plastic part, and a rotating shaft of the L-shaped armature is a sixth convex part which is integrally formed on the plastic part and corresponds to two side edges of the width of one side of the L shape of the L-shaped armature.

18. A clapper bistable magnetic circuit structure according to claim 9, 10, 11 or 12, wherein: one side of the L shape of the L-shaped armature is also connected with a pressure spring, and one side of the L shape of the L-shaped armature is connected with the coil rack through the pressure spring.

19. The clapper bistable magnetic circuit structure of claim 18, wherein: the pressure spring comprises a main sheet body and a wing piece, wherein two sides of the main sheet body are bent and protrude towards one side of the main sheet body, one side of the L-shaped armature, which is back to one side of the L-shaped yoke, protrudes outwards and is provided with a protruding bract, the main sheet body is provided with a first clamping hole, and the first clamping hole of the main sheet body is correspondingly matched with the protruding bract at one side of the L-shaped armature; the fins of the pressure spring extend to the coil rack and are connected with the coil rack.

20. The clapper bistable magnetic circuit structure of claim 19, wherein: the second clamping holes of the fins of the pressure spring are matched with the clamping blocks of the coil rack in a clamping mode.

21. The clapper bistable magnetic circuit structure of claim 20, wherein: a second clamping hole of the wing piece of the pressure spring is long-strip-shaped, and a clamping piece is arranged on one side of the second clamping hole; an inclined surface is arranged on one side of the fixture block facing the main sheet body of the pressure spring, and a straight surface is arranged on one side of the fixture block facing away from the main sheet body of the pressure spring; the clamping piece of the second clamping hole is matched with the straight surface of the clamping block.

22. The clapper bistable magnetic circuit structure of claim 19, wherein: one side of the L shape of the L-shaped armature, which faces away from one side of the L shape of the L-shaped yoke, is provided with a recessed part, the pressure spring is provided with an elastic tongue piece corresponding to the recessed part, and the elastic tongue piece of the pressure spring is abutted against the recessed part of one side of the L shape of the L-shaped armature.

23. The clapper bistable magnetic circuit structure of claim 8, wherein: a preset second gap is arranged between one side of the L shape of the L-shaped armature and the other end of the magnetic steel; two sides of the L-shaped width of the L-shaped armature are correspondingly provided with rotating shafts at the extension line of the connecting line from one end of the magnetic steel to the other end of the magnetic steel, so that the rotating shafts are utilized to realize seesaw type movement; the coil rack is provided with a supporting part for supporting the rotating shaft of the L-shaped armature.

24. A magnetic latching relay characterized in that: the magnetic circuit comprises a base, a static spring part, a movable spring part, a pushing card and the clapper type bistable magnetic circuit structure as claimed in any one of claims 1 to 23, wherein the clapper type bistable magnetic circuit structure, the static spring part and the movable spring part are respectively arranged on the base, and the pushing card is connected between one side of an L shape of an L-shaped armature of the clapper type bistable magnetic circuit structure and a movable spring of the movable spring part.

25. A magnetic latching relay according to claim 24, wherein: the base and the coil rack of the coil of the clapper type bistable magnetic circuit structure are an integral piece formed by injection molding; the base is also provided with a through hole which is convenient for the L-shaped armature iron to be arranged.

Images