Magnetic latching relay

Abstract

The present disclosure relates to the technical field of electronic control devices, and relates to a magnetic latching relay. The magnetic latching relay comprises a clamp-plate-type magnetic circuit structure, which comprises a yoke assembly, a permanent magnet, an armature, and a clamp plate assembly, wherein the armature and the yoke assembly are arranged opposite each other in a first direction; the permanent magnet is placed between the armature and the yoke assembly in the first direction, and is fixed in position relative to the yoke assembly, and the yoke assembly comes into contact with a magnetic pole on one side of the permanent magnet in the first direction; the permanent magnet and the armature are separately arranged, and the armature comes into contact with a magnetic pole on the other side of the permanent magnet in the first direction; the clamp plate assembly comprises two clamp plates, which clamp the armature and the permanent magnet in a second direction, and limit the armature and the permanent magnet in a third direction, the second direction being perpendicular to the first direction, and the third direction being perpendicular to the second direction and the first direction. The magnetic latching relay can reduce the difficulty of preparation, shorten the preparation cycle and reduce costs, and can improve the integration level of structural members and reduce the difficulty of assembly.

Description

Magnetic latching relay

[0001] The present disclosure claims priority to Chinese patent applications No. 202421588872.X and 202421589027.4, filed on July 5, 2024, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of electronic control devices, in particular to a magnetic latching relay. BACKGROUND

[0003] A relay is an electronic control device with a control system (also known as an input circuit) and a controlled system (also known as an output circuit), usually used in automatic control circuits. It is actually a "automatic switch" that uses a small current to control a large current. Therefore, it plays a role in automatic regulation, safety protection, and circuit conversion in the circuit.

[0004] The existing relay adopts an injection molding process to integrate the permanent magnet and the armature to form an integrated injection molding magnetic circuit. The integrated injection molding magnetic circuit has a long processing cycle and high cost. SUMMARY

[0005] The magnetic latching relay provided by the embodiments of the present disclosure can reduce the preparation difficulty, shorten the preparation period, reduce the cost, and improve the integration of structural components and reduce the assembly difficulty.

[0006] The magnetic latching relay provided by the embodiments of the present disclosure can reduce the preparation difficulty, shorten the preparation period, reduce the cost, and improve the integration of structural components and reduce the assembly difficulty.

[0007] The armature and the yoke assembly are arranged opposite to each other in a first direction; the permanent magnet is arranged between the armature and the yoke assembly along the first direction and is fixed in position relative to the yoke assembly, and the yoke assembly contacts one side magnetic pole of the permanent magnet in the first direction; the permanent magnet and the armature are arranged in a split manner, and the armature contacts another side magnetic pole of the permanent magnet in the first direction.

[0008] The clamping plate assembly includes two clamping plates, and the two clamping plates clamp the armature and the permanent magnet in a second direction and limit the armature and the permanent magnet in a third direction; the second direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction and the first direction.

[0009] According to some embodiments of the present disclosure, a first positioning structure is arranged between the clamping plate and the permanent magnet, and the first positioning structure is used to limit the relative position of the permanent magnet in the third direction.

[0010] According to some embodiments of the present disclosure, a first protrusion is arranged on one of the clamping plates facing the other clamping plate, and the first protrusion abuts both sides of the permanent magnet in the third direction.

[0011] According to some embodiments of the present disclosure, a second positioning structure is arranged between the clamping plates and the armature, and the second positioning structure is used to limit the relative position of the armature in the third direction.

[0012] According to some embodiments of the present disclosure, the second positioning structure includes a groove arranged on one of the clamping plates facing the other clamping plate and a second protrusion arranged on the surface of the armature, the second protrusion is placed in the groove, and the armature can rotate relative to the inner wall of the groove through the second protrusion.

[0013] According to some embodiments of the present disclosure, the groove penetrates through the opposite sides of the clamping plate in the second direction, and the second protrusion does not exceed the surface of the side of the clamping plate away from the other clamping plate where the groove is arranged.

[0014] According to some embodiments of the present disclosure, a third positioning structure is arranged between the clamping plates and the yoke assembly, and the yoke assembly is fixed to the clamping plate assembly through the third positioning structure.

[0015] According to some embodiments of the present disclosure, the third positioning structure includes a protrusion and a recess that are matched with each other, one of the protrusion and the recess is arranged on the clamping plate, and the other is arranged on the yoke assembly.

[0016] According to some embodiments of the present disclosure, an arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is arranged to rotate relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature are alternately contacted and matched with the yoke assembly.

[0017] According to some embodiments of the present disclosure, the yoke assembly includes a first contact portion and a second contact portion arranged opposite in the third direction, the first contact portion is used to contact and match with one end of the armature to form a first beating surface, and the second contact portion is used to contact and match with the other end of the armature to form a second beating surface; the second beating surface is arranged coplanar with the first beating surface; and the permanent magnet is fixed to the first contact portion.

[0018] According to some embodiments of the present disclosure, the yoke assembly comprises a first contact portion, a second contact portion, and a third contact portion, the first contact portion and the second contact portion are oppositely arranged along the third direction, and the third contact portion is arranged between the first contact portion and the second contact portion; the first contact portion is configured to contact and cooperate with one end of the armature to form a first contact surface, the second contact portion is configured to contact and cooperate with the other end of the armature to form a second contact surface, and the second contact surface is coplanar with the first contact surface; and the permanent magnet is fixed to the third contact portion.

[0019] According to some embodiments of the present disclosure, the yoke assembly comprises a first contact portion; the clamping plate type magnetic circuit structure further comprises a coil holder, a coil wound on the surface of the coil holder, and a core inserted into the coil; and the first contact portion is fixed to one end of the core exposed from the coil.

[0020] An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature alternately contact and cooperate with the first contact portion and the other end of the core.

[0021] According to some embodiments of the present disclosure, the yoke assembly comprises a first contact portion and a core; the clamping plate type magnetic circuit structure further comprises a coil holder and a coil wound on the surface of the coil holder, and the core is inserted into the coil; and the first contact portion is fixed to one end of the core exposed from the coil.

[0022] An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature alternately contact and cooperate with the first contact portion and the other end of the core.

[0023] According to some embodiments of the present disclosure, a base is further included, and the clamping plate type magnetic circuit structure is fixed to the base through the clamping plate assembly.

[0024] According to some embodiments of the present disclosure, the base comprises a seat body and a surrounding plate extending from the seat body, the surrounding plate forms a surrounding space, and at least part of the magnetic circuit system is arranged in the surrounding space.

[0025] According to some embodiments of the present disclosure, the surrounding plate is provided with a guide sliding groove extending along the third direction on each of the opposite sides in the second direction.

[0026] One of the clamping plates is provided with a guide protrusion on the side away from the other clamping plate, and the guide protrusion is arranged in the guide sliding groove.

[0027] According to some embodiments of the present disclosure, the clamping plate is provided with a clamping protrusion protruding from the guide protrusion surface in the first direction and clamped to the inner wall surface of the guide chute.

[0028] According to some embodiments of the present disclosure, the two clamping plates are symmetrically arranged about the guide protrusion in the first direction.

[0029] According to some embodiments of the present disclosure, an anti-disengagement structure is arranged between the clamping plate and the base.

[0030] According to some embodiments of the present disclosure, the anti-disengagement structure comprises a fixed groove arranged on the base and a protruding portion arranged on the clamping plate, and the protruding portion and the fixed groove are in interference fit.

[0031] According to some embodiments of the present disclosure, the anti-disengagement structure comprises a fixed groove arranged on the base and a protruding portion arranged on the clamping plate, the fixed groove is a through groove, the protruding portion extends from the fixed groove to the surface of the one side of the permanent magnet opposite to the other side, and the portion of the protruding portion extending out of the fixed groove is provided with a barb, and the barb is clamped to the surface of the one side of the fixed groove away from the permanent magnet.

[0032] The above-mentioned embodiment of the utility model has at least the following advantages or beneficial effects:

[0033] 1. In the magnetic latching relay provided by the present disclosure, the armature and the permanent magnet are of a split structure, and no integral insert injection molding is required in the preparation process, so that the parts are simple and easy to prepare, and the production efficiency and production quality of the parts can be improved, and the preparation cost is reduced. Moreover, when assembling the armature and the permanent magnet, a single machine can be used for automatic assembly, which reduces the assembly difficulty and improves the assembly efficiency of the parts.

[0034] Moreover, in the present disclosure, the armature and the permanent magnet form a whole through the clamping plate assembly, so as to realize integrated insertion of the clamping plate type magnetic circuit structure, achieve extremely simple assembly process, simple part forming, low cost, etc.

[0035] 2. In the relay provided by the present disclosure, a first positioning structure is arranged between the clamping plate and the permanent magnet, the first positioning structure is used for limiting the relative position of the permanent magnet in the third direction, so as to ensure that the permanent magnet is assembled to the preset position and avoid the permanent magnet from moving along the third direction during use, which can improve the structural performance of the relay.

[0036] 3. The magnetic latching relay provided by the present disclosure, wherein a second positioning structure is arranged between the clamping plate and the armature, and the second positioning structure is used to limit the relative position of the armature in the third direction. The structure is arranged so that the armature can be effectively positioned by the clamping plate assembly, and the assembly sequence of the armature can be earlier than the magnetizing step of the permanent magnet, so as to adjust the position of the permanent magnet before magnetizing according to the demand, reduce the assembly difficulty, and improve the assembly efficiency.

[0037] 4. The magnetic latching relay provided by the present disclosure, wherein a third positioning structure is arranged between the clamping plate and the yoke assembly, and the yoke assembly is fixed to the clamping plate assembly through the third positioning structure. According to the present disclosure, the yoke assembly, the permanent magnet, and the armature form an integral whole through the clamping plate assembly, which can further improve the integration of the structural components in the clamping plate magnetic circuit structure, so as to reduce the assembly difficulty of the clamping plate magnetic circuit structure and the base, and improve the assembly efficiency.

[0038] 5. The magnetic latching relay provided by the present disclosure, wherein the clamping plate magnetic circuit structure is fixed between the clamping plate and the base through the interference fit mode of the protruding part and the fixing groove, which can ensure the stability of the clamping plate assembly after assembly relative to the base, and prevent the clamping plate magnetic circuit structure from being separated from the base.

[0039] Moreover, since the clamping plate magnetic circuit structure is fixed between the clamping plate and the base through the clamping plate and the fixing groove, the interference fit between the clamping plate and the surrounding plate of the base can be avoided, which can reduce the possibility of scratching between the two. Meanwhile, during the assembly of the clamping plate assembly and the base, the clamping plate assembly made of plastic material contacts the base made of plastic material, which can reduce the probability of occurrence of the scratching phenomenon, reduce the amount of scratching between the two, and further reduce the amount of foreign matter generated during the assembly process, thereby improving the product quality.

[0040] 6. The magnetic latching relay provided by the present disclosure, wherein the part of the protruding part extending out of the fixing groove is provided with a barb, and the barb is engaged with the surface of the fixing groove away from the permanent magnet, so as to further improve the engagement strength between the clamping plate and the base, and prevent the protruding part from being separated from the fixing groove. BRIEF DESCRIPTION OF DRAWINGS

[0041] FIG. 1 shows a perspective structural schematic view of the magnetic latching relay provided by the embodiment of the present disclosure.

[0042] FIG. 2 shows a plan schematic view of the magnetic latching relay in FIG. 1.

[0043] FIG. 3 shows a perspective structural schematic view of the base in FIG. 1.

[0044] FIG. 4 shows a perspective structural schematic view of part of the structure in FIG. 1.

[0045] FIG. 5 shows a perspective structural schematic view of the clamping plate assembly in FIG. 4.

[0046] Figure 6 shows a schematic diagram of the assembled structure of the clamp assembly of Figure 5.

[0047] Figure 7 shows a plan view of part of the structure of Figure 6.

[0048] Figure 8 shows a cross-sectional view of Figure 2 at A-A.

[0049] Figure 9 shows an enlarged view of B of Figure 6.

[0050] Figure 10 shows a schematic diagram of a second clamp magnetic circuit structure.

[0051] Figure 11 shows a plan view of part of the structure of Figure 10.

[0052] Figure 12 shows a perspective view of the structure of Figure 11.

[0053] Figure 13 shows a schematic diagram of a third clamp magnetic circuit structure.

[0054] Figure 14 shows a plan view of part of the structure of Figure 13.

[0055] Figure 15 shows a perspective view of the structure of Figure 14.

[0056] Figure 16 shows a perspective view of a magnetic latching relay according to an embodiment of the disclosure.

[0057] Figure 17 shows a perspective view of part of the structure of Figure 16 from another angle.

[0058] Figure 18 shows a plan view of part of the structure of Figure 17.

[0059] Figure 19 shows a perspective view of part of the structure of Figure 18.

[0060] Figure 20 shows a perspective view of the structure of Figure 19 from another angle.

[0061] Figure 21 shows a side view of the structure of Figure 19.

[0062] Figure 22 shows a perspective view of the armature of Figure 19.

[0063] Figure 23 shows a perspective view of a first contact portion within the yoke assembly of Figure 19.

[0064] Figure 24 shows an enlarged view of C of Figure 23.

[0065] Figure 25 shows a further perspective view of the first contact portion within the yoke assembly of Figure 19.

[0066] Fig. 26 shows an enlarged view of D in Fig. 17.

[0067] Fig. 27 shows a plan view of the magnetic latching relay in Fig. 17.

[0068] Fig. 28 shows an enlarged view of E in Fig. 27.

[0069] Fig. 29 shows a plan view of the structure in Fig. 16.

[0070] Fig. 30 shows a sectional view of F-F in Fig. 29.

[0071] The reference signs are explained as follows: 100, clamping plate type magnetic circuit structure; 110, coil holder; 120, coil; 130, yoke assembly; 131, first contact portion; 132, second contact portion; 133, third contact portion; 134, core; 135, protrusion; 140, permanent magnet; 150, armature; 151, protrusion; 160, clamping plate assembly; 161, clamping plate; 1611, first protrusion; 1612, pushing portion; 1613, groove; 1614, recess; 1615, protruding portion; 1616, barb; 1617, guide protrusion; 1618, engaging protrusion; 200, base; 210, seat body; 220, enclosing plate; 221, guide chute. 100b, magnetic circuit system; 110b, coil holder; 111b, first extension arm; 112b, second extension arm; 113b, auxiliary extension arm; 1131b, anti-disengagement structure; 120b, coil; 121b, first portion; 122b, second portion; 130b, yoke assembly; 131b, first contact portion; 1311b, first protrusion; 1312b, second protrusion; 132b, second contact portion; 133b, core; 140b, permanent magnet; 150b, armature; 151b, protrusion; 152b, notch; 153b, protrusion group; 1531b, protrusion; 200b, base; M, guide slope; P1b, horizontal extension section; P2b, inclined extension section. DETAILED DESCRIPTION

[0072] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus description of the same will be simplified or omitted.

[0073] The magnetic latching relay provided by the embodiments of the present disclosure is shown in FIG. 1 and FIG. 2, which includes a clamping plate type magnetic circuit structure 100. The clamping plate type magnetic circuit structure 100 is shown in FIG. 4 to FIG. 9, and the embodiments of the present disclosure provide a clamping plate type magnetic circuit structure 100. The clamping plate type magnetic circuit structure 100 includes a permanent magnet 140, an armature 150 and a clamping plate assembly 160. In the clamping plate type magnetic circuit structure 100, the armature 150 and the yoke assembly 130 are arranged opposite to each other in a first direction X; the permanent magnet 140 is arranged between the armature 150 and the yoke assembly 130 in the first direction X and is fixed relative to the yoke assembly 130, and the yoke assembly 130 contacts one side magnetic pole of the permanent magnet 140 in the first direction X; the permanent magnet 140 and the armature 150 are arranged in a split type, and the armature 150 contacts the other side magnetic pole of the permanent magnet 140 in the first direction X.

[0074] It should be noted that in the clamping plate type magnetic circuit structure 100 provided by the embodiments of the present disclosure, the armature 150 and the permanent magnet 140 are in a split type structure, and there is no need for integral insert injection molding during the preparation process, so that the parts are simple and easy to prepare, and the production efficiency and production quality of the parts can be improved, and the preparation cost can be reduced. Moreover, the single machine can be used for automatic assembly when assembling the armature 150 and the permanent magnet 140, which reduces the assembly difficulty and improves the assembly efficiency of the parts.

[0075] Please refer to the structure shown in FIG. 4 in combination with FIG. 5, the clamping plate assembly 160 includes two clamping plates 161, which clamp the armature 150 and the permanent magnet 140 in a second direction Y, and limit the armature 150 and the permanent magnet 140 in a third direction Z; the second direction Y is perpendicular to the first direction X, and the third direction Z is perpendicular to the second direction Y and the first direction X. At the same time, the clamping plate type magnetic circuit structure 100 is fixed to the base 200 through the clamping plate assembly 160.

[0076] It should be noted that in the embodiments of the present disclosure, the armature 150 and the permanent magnet 140 form a whole through the clamping plate assembly 160, so as to realize the integral insertion of the clamping plate type magnetic circuit structure 100, and achieve the effects of extremely simple assembly process, simple part forming and low cost.

[0077] It can be understood that the permanent magnet 140 and the armature 150 can be in direct contact, or a magnetic conducting member can be arranged to indirectly contact. Similarly, the permanent magnet 140 and the yoke assembly 130 can be in direct contact, or a magnetic conducting member can be arranged to indirectly contact.

[0078] It is worth noting that other fixing structures can be provided between the permanent magnet 140 and the yoke assembly 130, or the permanent magnet 140 can be magnetized to attract the yoke assembly 130. For example, during assembly, the permanent magnet 140 is first magnetized to ensure that the relative position of the permanent magnet 140 and the yoke assembly 130 meets the requirements, and then the assembly of other structural components is completed.

[0079] In one embodiment, a first positioning structure is provided between the clamping plate 161 and the permanent magnet 140, and the first positioning structure is used to limit the relative position of the permanent magnet 140 in the third direction Z, so as to ensure that the permanent magnet 140 is assembled to a predetermined position and avoid the permanent magnet 140 from moving in the third direction Z during use, thereby improving the structural performance of the relay.

[0080] In one specific embodiment, the first positioning structure can be provided only on the surface of the clamping plate 161. For example, referring to the structure shown in FIG. 4 in combination with FIG. 5, the first positioning structure includes a first protruding portion 1611 provided on the side of the clamping plate 161 facing the other clamping plate 161, and the first protruding portion 1611 abuts both sides of the permanent magnet 140 in the third direction Z to limit the relative position of the permanent magnet 140 in the third direction Z.

[0081] Specifically, in the present embodiment, two first protruding portions 1611 are provided on the surface of each clamping plate 161, and the two first protruding portions 1611 are oppositely arranged in the third direction Z to limit the relative arrangement of the permanent magnet 140 in the third direction Z.

[0082] As shown in FIGS. 4 and 5, in the present example, the first protruding portions 1611 at corresponding positions on the two clamping plates 161 cooperate with each other to improve the limiting effect on the permanent magnet 140. If the third direction Z in the embodiment of the present disclosure is the vertical direction, and the side of each structural component close to the base 200 is defined as the bottom. Then, the first protruding portion 1611 on one clamping plate 161 and the first protruding portion 1611 on the other clamping plate 161 jointly limit the bottom of the permanent magnet 140, and at the same time, the first protruding portion 1611 on one clamping plate 161 and the first protruding portion 1611 on the other clamping plate 161 jointly limit the top of the permanent magnet 140.

[0083] It should be noted that during assembly of the clamping plate assembly 160 and the permanent magnet 140, the two clamping plates 161 can be directly placed on both sides of the permanent magnet 140 for assembly operation, which can reduce the assembly difficulty and improve the assembly efficiency.

[0084] Of course, the first protruding portion 1611 can also be provided only on the clamping plate 161 located on one side of the permanent magnet 140, and the details are not described herein.

[0085] Alternatively, in another embodiment, the first positioning structure can be partially provided on the surface of the permanent magnet 140 and partially provided on the surface of the clamping plate 161. Specifically, the first positioning structure comprises a concave portion and a convex portion which are matched with each other, and one of the convex portion and the concave portion is provided on the permanent magnet and the other is provided on the clamping plate 161.

[0086] For example, the permanent magnet 140 is provided with a convex portion which is inserted into a concave portion of the clamping plate 161 to limit the relative position of the permanent magnet 140 in the third direction Z. Alternatively, the clamping plate 161 is provided with a convex portion which is inserted into a concave portion of the permanent magnet 140 to limit the relative position of the permanent magnet 140 in the third direction Z.

[0087] In order to facilitate the assembly of the permanent magnet 140 into the limiting space formed by the first protruding portion 1611, a guide inclined surface M can be provided on the first protruding portion 1611 as shown in FIG. 5 to facilitate the insertion of the permanent magnet 140 and avoid the sharp corner of the first protruding portion 1611 scratching the permanent magnet 140 and affecting the performance of the permanent magnet 140.

[0088] Please continue to refer to the structure shown in FIG. 5. In order to improve the clamping effect of the clamping plate assembly 160 on the permanent magnet 140 in the second direction Y, in one embodiment, the clamping plate 161 is provided with a pushing portion 1612 on the side facing the other clamping plate 161 to push the side surface of the permanent magnet 140 in the second direction Y.

[0089] It is worth noting that the pushing portion 1612 is arranged between and connected to the two first protruding portions 1611 of the same clamping plate 161 to improve the structural strength of the clamping plate 161.

[0090] Please continue to refer to the structures shown in FIG. 4 and FIG. 5. Since the two clamping plates 161 are located on both sides of the armature 150 in the second direction Y, the clamping plate assembly 160 can limit the maximum displacement of the armature 150 in the second direction Y. When the armature 150 and the permanent magnet 140 are separately arranged, the armature 150 is attracted by the permanent magnet 140 and will not fall off, and the permanent magnet 140 does not need to be pressed and limited in the first direction X by the armature 150. However, during assembly, the assembly operation of the armature 150 can be earlier than the magnetizing operation of the permanent magnet 140. Therefore, in one embodiment, a second positioning structure is provided between the clamping plate 161 and the armature 150 to limit the relative position of the armature 150 in the third direction Z.

[0091] It should be noted that this structure allows the armature 150 to be effectively positioned by the clamping plate assembly 160, and the assembly sequence of the armature 150 can be earlier than the magnetizing step of the permanent magnet 140, so that the position of the permanent magnet 140 can be adjusted according to the needs before magnetizing, thereby reducing the assembly difficulty and improving the assembly efficiency.

[0092] It is worth noting that the structure of the second positioning structure in the embodiments of the present disclosure has multiple possibilities.

[0093] In one specific embodiment, as shown in FIG. 4 and FIG. 5, the second positioning structure includes a groove 1613 provided on one side of the clamping plate 161 facing the other clamping plate 161 and a second protruding portion 151 provided on the surface of the armature 150, the second protruding portion 151 is placed in the groove 1613 matched therewith, and the armature 150 can rotate relative to the inner wall of the groove 1613 through the second protruding portion 151.

[0094] It should be noted that in this specific embodiment, the protruding portion 151 on the surface of the armature 150 is placed in the groove 1613 on the clamping plate 161 matched therewith, which can limit the protruding portion 151 in the first direction X and the third direction Z, and further limit the relative position of the armature 150 in the first direction X and the third direction Z.

[0095] It is worth noting that, as shown in FIG. 6, along the first direction X and the third direction Z, the protruding portion 151 and the inner wall of the groove 1613 both have gaps to ensure the rotation effect of the protruding portion 151 and avoid jamming.

[0096] In order to further optimize the rotation effect of the protruding portion 151 relative to the groove 1613 and avoid jamming, as an example, referring to FIG. 9, the inner wall of the groove 1613 formed by the clamping plate 161 includes first, second, third and fourth extension segments P1, P2, P3 and P4 connected in sequence, wherein the first and third extension segments P1 and P3 are oppositely arranged in the third direction Z, the second and fourth extension segments P2 and P4 are oppositely arranged in the first direction X, the second, third and fourth extension segments P2, P3 and P4 are straight segments, the fourth extension segment P4 is located on the side of the second extension segment P2 away from the permanent magnet 140, and the fourth extension segment P4 is a curved segment protruding away from the permanent magnet 140. The protruding portion 151 of the armature 150 includes first, second, third and fourth surfaces Q1, Q2, Q3 and Q4, the first and third surfaces Q1 and Q3 are oppositely arranged in the third direction Z, the second and fourth surfaces Q2 and Q4 are oppositely arranged in the first direction X, the fourth surface Q4 is located on the side of the armature 150 away from the permanent magnet 140, and the first surface Q1 and the fourth surface Q4 have a bevel Q5 therebetween, and the third surface Q3 and the fourth surface Q4 have a bevel Q6 therebetween.

[0097] It is worth noting that during the rotation of the armature 150, the bevels Q5 and Q6 are used to prevent rotation jamming.

[0098] Of course, according to the needs, a groove structure can also be provided on the armature 150, and a protruding structure can be provided on the clamping plate 161, which will not be described in detail.

[0099] In one embodiment, the groove 1613 penetrates through the opposite sides of the clamping plate 161 in the second direction Y, that is, the groove 1613 is a through groove. At this time, the protruding part 151 does not exceed the side surface of the clamping plate 161 away from the other clamping plate 161, so as to reduce the assembly difficulty, avoid the protruding part 151 exceeding the clamping plate 161 and scratching the base 200, and reduce the risk of scratching.

[0100] Of course, the groove 1613 can also be provided with an opening only on the side of the clamping plate 161 facing the armature 150, which will not be described in detail.

[0101] In one embodiment, please refer to the structure shown in FIGS. 4 to 8, the third positioning structure is arranged between the clamping plate 161 and the yoke assembly 130, and the yoke assembly 130 is fixed to the clamping plate assembly 160 through the third positioning structure.

[0102] It should be noted that the yoke assembly 130, the permanent magnet 140 and the armature 150 are integrated through the clamping plate assembly 160 in the embodiment of the present disclosure, which can further improve the integration of the components in the clamping plate magnetic circuit structure 100, reduce the assembly difficulty of the clamping plate magnetic circuit structure 100 and the base 200, and improve the assembly efficiency.

[0103] It is worth noting that since the yoke assembly 130 is also fixed by the clamping plate assembly 160 in the embodiment, when assembling the magnetic latching relay provided in the embodiment of the present disclosure, the components can be assembled, and then the permanent magnet 140 is magnetized and adsorbed on the surface of the yoke assembly 130. At the same time, the armature 150 is attracted by the permanent magnet 140 and will not fall off. Accordingly, when the armature 150 and the permanent magnet 140 are separately arranged, the permanent magnet 140 does not need to be pressed and limited by the armature 150 in the first direction X.

[0104] In one embodiment, the third positioning structure includes a protruding part 135 and a recessed part 1614 which are matched with each other, one of the protruding part 135 and the recessed part 1614 is arranged on the clamping plate 161, and the other is arranged on the yoke assembly 130. For example, as shown in FIGS. 4 to 8, the surface of the clamping plate 161 is provided with the recessed part 1614, the surface of the yoke assembly 130 is provided with the protruding part 135, and the protruding part 135 is arranged in the corresponding recessed part 1614.

[0105] It is worth noting that the surface of the clamping plate 161 can be provided with one or more recessed parts 1614, and correspondingly, the surface of the yoke assembly 130 can be provided with one or more corresponding protruding parts 135, so as to improve the relative stability of the yoke assembly 130 and the clamping plate assembly 160 after assembly. Even, the number of recessed parts 1614 on the surface of the clamping plate 161 can be greater than the number of protruding parts 135 on the surface of the yoke assembly 130, so as to widen the application scenarios, which will not be described in detail.

[0106] Please continue to refer to the structure shown in FIGS. 4-8, in one specific embodiment, the recess 1614 can be through the clamp plate 161 in the second direction Y, so that the convex portion 135 is effectively placed in the recess 1614, thereby improving the relative stability of the yoke assembly 130 and the clamp assembly 160 after assembly.

[0107] At the same time, when the recess 1614 is through the clamp plate 161 in the second direction Y, it can be observed whether the convex portion 135 is assembled in place in time, so as to reduce the assembly difficulty and improve the assembly efficiency.

[0108] It is worth noting that the assembly form of the yoke assembly 130, the armature 150 and the permanent magnet 140 in the embodiment of the present disclosure has multiple possibilities, at least one of the following forms.

[0109] In one embodiment, please continue to refer to the structure shown in FIGS. 4 and 7, an arc-shaped contact surface is provided between the armature 150 and the permanent magnet 140, the armature 150 contacts one side magnetic pole of the permanent magnet 140 through the arc-shaped contact surface, and the armature 150 is rotatably arranged relative to the permanent magnet 140 through the arc-shaped contact surface, so that the two ends of the armature 150 are alternately contacted and matched with the yoke assembly 130.

[0110] It should be noted that the present disclosure only contains one armature 150, and the armature 150 is generally a flat plate structure, which not only has light weight, but also can save parts and reduce cost.

[0111] Of course, multiple armatures 150 can also be provided according to requirements, and the multiple armatures 150 are arranged horizontally along the second direction Y under the premise of maintaining the consistency of the action, which will not be described in detail.

[0112] It is worth noting that when the arc-shaped contact surface is provided between the armature 150 and the permanent magnet 140, the form of the arc-shaped contact surface has multiple possibilities. For example, the armature 150 is provided with a convex calyx towards one side of the permanent magnet 140, the convex calyx forms an arc-shaped contact surface, and the armature 150 contacts the permanent magnet 140 through the arc-shaped contact surface; or the permanent magnet 140 is provided with a convex calyx towards one side of the armature 150, the convex calyx forms an arc-shaped contact surface, and the armature 150 contacts the permanent magnet 140 through the arc-shaped contact surface.

[0113] When the convex calyx is provided on the armature 150, the convex calyx and the armature 150 can be an integral structure to improve the stability of the rotation of the armature 150. Of course, the armature 150 and the convex calyx can also be provided in a split structure according to requirements, which will not be described in detail here.

[0114] Similarly, the convex calyx and the permanent magnet 140 can be set according to the form between the convex calyx and the armature 150, which will not be described in detail here.

[0115] In one specific example in this embodiment, as shown in FIG. 4, the yoke assembly 130 includes a first contact portion 131, a second contact portion 132, and a third contact portion 133, the first contact portion 131 is disposed opposite to the second contact portion 132 along the third direction Z, and the third contact portion 133 is disposed between the first contact portion 131 and the second contact portion 132; the first contact portion 131 is configured to contact and cooperate with one end of the armature 150 to form a first contact surface, the second contact portion 132 is configured to contact and cooperate with the other end of the armature 150 to form a second contact surface, and the second contact surface is disposed coplanarly with the first contact surface; and the permanent magnet 140 is fixed to the third contact portion 133. It can be understood that in this specific embodiment, the first contact portion 131, the second contact portion 132, and the third contact portion 133 can be understood as three yokes.

[0116] It is worth noting that, as shown in FIG. 4, the first contact portion 131 and the second contact portion 132 extend beyond the third contact portion 133 along the first direction X, and the first contact portion 131 and the second contact portion 132 have a gap along the third direction Z, so as to facilitate the fixation of the permanent magnet 140 on the surface of the third contact portion 133.

[0117] It should be noted that, in the design scheme of the three yokes and the armature 150, one permanent magnet 140 is exposed, and the permanent magnet 140 is positioned and limited by the two side clamping plates 161 and the yokes. Among them, the support surface of the rotation of the armature 150 is the surface of the permanent magnet 140, and the first contact surface and the second contact surface cooperate to complete the entire magnetic circuit lapping. Accordingly, the clamping plate 161 can not only better position and limit the permanent magnet 140, but also can avoid generating scrapes with the base 200 during the assembly of the magnetic circuit.

[0118] In another specific example in this embodiment, as shown in FIGS. 10-12, the yoke assembly 130 includes a first contact portion 131 and a second contact portion 132 disposed opposite to each other along the third direction Z, the first contact portion 131 is configured to contact and cooperate with one end of the armature 150 to form a first contact surface, and the second contact portion 132 is configured to contact and cooperate with the other end of the armature 150 to form a second contact surface; the second contact surface is disposed coplanarly with the first contact surface; and the permanent magnet 140 is fixed to the first contact portion 131. It can be understood that in this specific embodiment, the first contact portion 131 and the second contact portion 132 can be understood as two yokes.

[0119] It should be noted that the two yoke iron and armature 150 design scheme exposes one permanent magnet 140 to the outside, and positions and limits the permanent magnet 140 through the two side clamping plates 161 and yoke iron. Among them, the support surface of the armature 150 rotating is the surface of the permanent magnet 140, which cooperates with the first and second lap surfaces to complete the entire magnetic circuit lap. Accordingly, the clamping plate 161 can not only better position and limit the permanent magnet 140, but also can avoid generating scrapes with the base 200 during the magnetic circuit assembly.

[0120] As an example, the first contact part 131 and the second contact part 132 are located on opposite sides of the coil 120 in the third direction Z and are fixed in position relative to the coil 120; each of the first contact part 131 and the second contact part 132 extends from a fixed point with the coil 120 to one side of the armature 150; and at least part of the first contact part 131 and the second contact part 132 extends between the coil 120 and the armature 150 to be arranged opposite the armature 150. It can be understood that the extension size of the first contact part 131 in the third direction Z is greater than the extension size of the second contact part 132 in the third direction Z, and the permanent magnet 140 is fixed to the first contact part 131.

[0121] It can be understood that the position fixation of the first contact part 131 and the second contact part 132 relative to the coil 120 means that the first contact part 131 and the second contact part 132 will not substantially move relative to the coil 120 after being assembled. As an example, the first contact part 131 is fixedly connected to the coil 120 by some structural members (such as riveting) to achieve position fixation; or the first contact part 131 and the coil 120 can be positionally fixed by some structural members in the form of insertion and lap. Of course, other limiting structures can also be provided between the first contact part 131 and the coil 120 to achieve position fixation, which will not be described in detail.

[0122] Taking the above two specific embodiments as examples, when the coil 120 is energized, the armature 150 swings under the joint action of the permanent magnet 140 and the yoke assembly 130, so that one end of the armature 150 contacts the first contact part 131. At this time, the armature 150, the permanent magnet 140, and part of the yoke assembly 130 form a complete magnetic circuit. When the coil 120 is de-energized, the armature 150 swings in the opposite direction, so that the other end of the armature 150 contacts the other part of the second contact part 132. At this time, the armature 150, the permanent magnet 140, and part of the yoke assembly 130 form another complete magnetic circuit.

[0123] In another embodiment, as shown in FIGS. 13-15, the yoke assembly 130 includes a first contact portion 131 and a core 134, the core 134 being inserted inside the coil 120 and the first contact portion 131 being fixed to one end of the core 134 exposed from the coil 120;

[0124] The arc-shaped contact surface is provided between the armature 150 and the permanent magnet 140, the armature 150 contacts one side magnetic pole of the permanent magnet 140 through the arc-shaped contact surface, and the armature 150 is rotatably arranged relative to the permanent magnet 140 through the arc-shaped contact surface, so that the two ends of the armature 150 are alternately contacted and matched with the first contact portion 131 and the other end of the core 134.

[0125] It should be noted that the yoke assembly 130 in the embodiment of the present disclosure includes one yoke, and the armature 150 is an L-shaped armature 150, so as to meet the requirement of the magnetic circuit.

[0126] In this embodiment, when the coil 120 is energized, the armature 150 swings under the joint action of the permanent magnet 140 and the yoke assembly 130, so that one end of the armature 150 contacts the first contact portion 131. When the coil 120 is de-energized, the armature 150 swings reversely, so that the other end of the armature 150 contacts the core 134.

[0127] It should be noted that the number of yokes in the embodiment of the present disclosure is one, and the armature 150 is an L-shaped armature 150, so as to meet the requirement of the magnetic circuit.

[0128] It can be understood that in the above examples of the yoke assembly 130 including two yokes and three yokes, the yoke assembly 130 can include the core 134, and the core 134 is connected to the contact portion formed by the yokes; or the yoke assembly 130 can not include the core 134.

[0129] Taking the yoke assembly 130 including the core 134 and the number of yokes being one as an example, the core 134 and the first contact portion 131 in the yoke assembly 130 can be an integral structure, or can be a segmented structure. For example, when the core 134 and the first contact portion 131 are a segmented structure, the core 134 can be inserted through the coil holder 110, and then the first contact portion 131 is riveted to the side end of the core 134. Then, the armature 150, the permanent magnet 140, and the yoke assembly 130 including the contact portions and the core 134 can be assembled through the clamping plate assembly 160 to form an integral whole.

[0130] When the iron core 134 does not belong to the yoke assembly 130, the yoke assembly 130 only includes the first contact portion 131, for example, the yoke assembly 130 includes the first contact portion 131; the clamping plate type magnetic circuit structure 100 further includes the coil holder 110, the coil 120 wound on the surface of the coil holder 110, and the iron core 134 inserted into the coil 120, and the first contact portion 131 is fixed to one end of the iron core 134 exposed to the coil 120; similarly, the arc-shaped contact surface is arranged between the armature 150 and the permanent magnet 140, the armature 150 contacts one side magnetic pole of the permanent magnet 140 through the arc-shaped contact surface, and the armature 150 is rotatably arranged relative to the permanent magnet 140 through the arc-shaped contact surface, so that the two ends of the armature 150 are alternately contacted and matched with the first contact portion 131 and the other end of the iron core 134.

[0131] Accordingly, when the iron core 134 does not belong to the yoke assembly 130, the yoke assembly 130 only includes the contact portion, and the clamping plate assembly 160 can assemble the armature 150, the permanent magnet 140 and the contact portion to form a whole, and then assemble the iron core 134.

[0132] In one embodiment, please continue to refer to the structure shown in FIGS. 1 to 3, the magnetic latching relay provided by the embodiment of the present disclosure further includes a base 200, and the clamping plate type magnetic circuit structure 100 is fixed to the base 200 through the clamping plate assembly 160. It should be understood that the structure of the base 200 is not limited to that shown in FIGS. 1 and 3, and can be set to other forms according to requirements. For example, the base 200 can be a shell structure with a mounting cavity, so as to mount the magnetic circuit system in the shell structure.

[0133] It should be noted that since the clamping plate type magnetic circuit structure 100 is assembled with the base 200 through the clamping plate assembly 160, the clamping plate assembly 160 serves as a transition piece connecting the clamping plate type magnetic circuit structure 100 and the base 200, and the armature 150 and the yoke assembly 130 and other structures no longer directly contact the base 200, so that the risk of scratching can be reduced. Moreover, during the assembly of the clamping plate assembly 160 and the base 200, the plastic material of the clamping plate assembly 160 contacts the plastic material of the base 200, so that the probability of occurrence of the scratching phenomenon is reduced, the amount of scratching between the two is reduced, the amount of foreign matter generated during the assembly process is further reduced, and the product quality is improved.

[0134] In one embodiment, please refer to the structure shown in FIG. 3, the base 200 includes a seat body 210 and a surrounding plate 220 extending from the seat body 210, the surrounding plate 220 forms a surrounding space, and at least part of the magnetic circuit system is located in the surrounding space.

[0135] It should be noted that in the embodiments of the present disclosure, the clamping plate type magnetic circuit structure 100 is formed as a whole through the clamping plate assembly 160. When the clamping plate type magnetic circuit structure 100 is assembled in the enclosing space, the clamping plate type magnetic circuit structure 100 and the enclosing plate 220 do not need interference fit, which can reduce the probability of occurrence of the scratching phenomenon and the amount of scratching between the two, thereby reducing the amount of foreign matter generated in the assembly process and improving product quality.

[0136] In one embodiment, referring to the structure shown in FIG. 5 in combination with FIG. 3, the enclosing plate 220 is provided with a guide sliding groove 221 extending in the third direction Z on both sides in the second direction Y; the clamping plate 161 is provided with a guide protrusion 1617 on the side away from the other clamping plate 161, and the guide protrusion 1617 is placed in the guide sliding groove 221 to ensure that the clamping plate type magnetic circuit structure 100 is assembled in place and reduce the assembly difficulty.

[0137] In order to prevent the clamping plate type magnetic circuit structure 100 from shaking during assembly, in one embodiment, the clamping plate 161 shown in FIG. 5 is provided with a clamping protrusion 1618 which protrudes from the surface of the guide protrusion 1617 in the first direction X and is clamped to the inner wall surface of the guide sliding groove 221.

[0138] In one embodiment, the clamping plate 161 and the base 200 are provided with anti-disengagement structures to prevent the clamping plate type magnetic circuit structure 100 from disengaging from the base 200. As an example, the anti-disengagement structure includes a fixed groove provided on the base 200 and a protruding portion provided on the clamping plate 161, and the protruding portion and the fixed groove are interference fit.

[0139] It should be noted that the clamping plate type magnetic circuit structure 100 realizes the fixing operation between the clamping plate 161 and the base 200 by interference fit between the protruding portion and the fixed groove, which can improve the stability of the clamping plate assembly 160 after assembly relative to the base 200 and prevent the clamping plate type magnetic circuit structure 100 from disengaging from the base 200.

[0140] Moreover, since the clamping plate type magnetic circuit structure 100 realizes the fixing operation between the clamping plate 161 and the base 200 through the protruding portion and the fixed groove, the clamping plate 161 and the enclosing plate 220 of the base 200 are not interference fit, which can reduce the possibility of scratching between the two. At the same time, during the assembly process of the clamping plate assembly 160 and the base 200, the plastic material clamping plate assembly 160 contacts the plastic material base 200, which reduces the probability of occurrence of the scratching phenomenon and the amount of scratching between the two, thereby reducing the amount of foreign matter generated in the assembly process and improving product quality.

[0141] In another embodiment, please refer to the structure shown in FIG. 5 and FIG. 8, the anti-disengagement structure includes a fixed groove provided on the base 200 and a protruding portion 1615 provided on the clamping plate 161, the fixed groove is a through groove, the protruding portion 1615 extends from the fixed groove to the surface of the opposite side of the permanent magnet 140, and the part of the protruding portion 1615 extending out of the fixed groove is provided with a barb 1616, which is engaged with the surface of the fixed groove away from the permanent magnet 140.

[0142] In assembly, the protruding portion 1615 with the barb 1616 can be inserted into the fixed groove, and after the barb 1616 extends out of the surface of the other side of the fixed groove, the barb 1616 can be engaged with the surface of the fixed groove away from the permanent magnet 140, so as to further improve the engagement strength between the clamping plate 161 and the base 200, and avoid the protruding portion 1615 from disengaging from the fixed groove.

[0143] It is worth noting that in order to facilitate the barb 1616 to pass through the fixed groove during assembly, the inner wall of the fixed groove can be provided with a first guide slope, and the barb 1616 is provided with a corresponding second guide slope towards the position of the first guide slope, so as to reduce the amount of scrap between the two, thereby reducing the amount of foreign matter generated during assembly and improving product quality.

[0144] In an embodiment, the clamping plate 161 is symmetrically arranged about the guide protrusion 1617 in the first direction X. Specifically, as shown in FIG. 5, the first protruding portion 1611, the pushing portion 1612, the groove 1613, the recess 1614, the protruding portion 1615, and the barb 1616 are symmetrically arranged on both sides of the guide protrusion 1617, so as to facilitate the use of the clamping plate 161 during assembly.

[0145] Specifically, since the clamping plate 161 is symmetrically designed, the clamping plate 161 can be assembled on one side or the opposite side of the permanent magnet 140 along the second direction Y, which can reduce the assembly difficulty and improve the assembly efficiency.

[0146] Finally, it should be pointed out that: it can be understood that the various embodiments / embodiments provided by the present disclosure can be combined with each other without contradiction, which will not be illustrated one by one here.

[0147] In addition, the magnetic latching relay provided by the embodiment of the present disclosure can reduce the preparation difficulty, shorten the preparation period, reduce the cost, and reduce the assembly difficulty and prevent the occurrence of the scraping phenomenon.

[0148] The magnetic latching relay provided by the embodiments of the present disclosure comprises a magnetic circuit system and a base, the magnetic circuit system comprises a coil holder, a yoke assembly, a permanent magnet and an armature, the magnetic circuit system is fixed to the base through the coil holder; the yoke assembly is inserted into the coil holder; the armature is oppositely arranged with the yoke assembly in a first direction, and a containing space is formed between the armature and the yoke assembly; the permanent magnet is placed in the containing space, and the armature and the permanent magnet are separately arranged;

[0149] An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotationally arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature alternately contact and cooperate with the yoke assembly;

[0150] A first limiting structure is arranged between the yoke assembly and the armature, the first limiting structure is used for limiting the relative position of the permanent magnet in a second direction, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the extension direction of the rotation axis of the armature.

[0151] According to some embodiments of the present disclosure, the first limiting structure comprises a first protruding part arranged on the side of the yoke assembly facing the armature, and the first protruding part abuts against the opposite sides of the permanent magnet in the second direction.

[0152] According to some embodiments of the present disclosure, a second limiting structure is arranged between the yoke assembly and the armature, the second limiting structure is used for limiting the relative position of the permanent magnet in a third direction, and the third direction is perpendicular to the first direction and the second direction.

[0153] According to some embodiments of the present disclosure, the second limiting structure comprises a second protruding part arranged on the side of the yoke assembly facing the armature, and the second protruding part abuts against the opposite sides of the permanent magnet in the third direction.

[0154] According to some embodiments of the present disclosure, the coil holder is provided with an extension arm assembly, the extension arm assembly comprises two extension arm units oppositely arranged in a third direction, each of the extension arm units comprises a first extension arm extending in the first direction, the first extension arm abuts against one side surface of the permanent magnet in the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0155] According to some embodiments of the present disclosure, the extension arm unit further comprises a second extension arm extending in the first direction, and the second extension arm is located on the side of the first extension arm away from the permanent magnet in the third direction.

[0156] The armature has a notch in the third direction, and the second extension arm is arranged in the notch corresponding to the second extension arm to serve as a rotation force receiving shaft when the armature rotates.

[0157] According to some embodiments of the present disclosure, along the second direction, the inner wall of the notch formed by the armature and the second extension arm have a first gap with a range of 0.03mm-0.05mm.

[0158] According to some embodiments of the present disclosure, the extension arm unit further comprises an auxiliary extension arm extending in the first direction, the auxiliary extension arm is located on the side of the first extension arm away from the permanent magnet in the third direction, and the auxiliary extension arm is located on the side of the second extension arm in the third direction, the auxiliary extension arm and the second extension arm are arranged in the same notch to serve as an auxiliary force receiving shaft when the armature rotates.

[0159] According to some embodiments of the present disclosure, along the second direction, the inner wall of the notch formed by the armature and the auxiliary extension arm have a second gap with a range of 0.03mm-0.1mm.

[0160] According to some embodiments of the present disclosure, the size of the second gap in the second direction is greater than the size of the first gap in the second direction.

[0161] According to some embodiments of the present disclosure, the size of the second extension arm in the third direction is greater than the size of the auxiliary extension arm in the third direction.

[0162] According to some embodiments of the present disclosure, the wall of the notch formed by the armature has a horizontal extension section and an inclined extension section, the inclined extension section is located on the side of the horizontal extension section close to the permanent magnet; along the second direction, two horizontal extension sections are arranged opposite to each other on both sides of the second extension arm, and two inclined extension sections are arranged opposite to each other on both sides of the second extension arm; and along the direction of the armature pointing to the permanent magnet, the distance between the two inclined extension sections arranged opposite to each other in the second direction gradually increases.

[0163] According to some embodiments of the present disclosure, the armature is provided with a protrusion group in the third direction, the protrusion group comprises two protrusions arranged at intervals in the second direction, and the notch is formed between the two protrusions.

[0164] According to some embodiments of the present disclosure, the magnetic circuit system further comprises a coil wound on the surface of the coil holder; the coil comprises a first part and a second part, the second part is arranged at intervals with the first part in the second direction, and the coil holder is provided with a partition plate between the first part and the second part.

[0165] According to some embodiments of the present disclosure, the yoke assembly comprises a first contact portion and a second contact portion arranged opposite in the second direction, the first contact portion is configured to contact and cooperate with one end of the armature to form a first beating surface, and the second contact portion is configured to contact and cooperate with the other end of the armature to form a second beating surface, and the second beating surface is arranged coplanar with the first beating surface.

[0166] According to some embodiments of the present disclosure, the armature is provided with a convex calyx on the side facing the permanent magnet, and the convex calyx forms the arc-shaped contact surface; along the second direction, the size of the second beating surface from the convex calyx is equal to the size of the first beating surface from the convex calyx.

[0167] According to some embodiments of the present disclosure, the convex calyx is in the shape of a long strip and extends in a direction parallel to the rotation axis of the armature.

[0168] According to some embodiments of the present disclosure, the coil holder and the base are in an integrated structure.

[0169] The above-mentioned one embodiment of the disclosure has at least the following advantages or beneficial effects:

[0170] 1. In the magnetic latching relay provided by the present disclosure, the armature and the permanent magnet are in a split structure, and no integral insert injection molding is required during preparation, so that the parts are simple and easy to prepare. This structure can improve the production efficiency and production quality of the parts and reduce the preparation cost. Moreover, when assembling the armature and the permanent magnet, a single machine can be used for automatic assembly, which reduces the assembly difficulty and improves the assembly efficiency of the parts.

[0171] Moreover, the yoke assembly is fixed to the base through the coil holder, and the yoke assembly and the base are not easy to collide. At the same time, since the external permanent magnet is effectively positioned and limited by the first limiting structure, the permanent magnet is not easy to scratch the base. Accordingly, when assembling the magnetic circuit system in the present disclosure, the magnetic circuit system and the base are not easy to produce the phenomenon of scratching, which can reduce the risk of foreign matter in the process.

[0172] Furthermore, the magnetic latching relay provided by the present disclosure cancels the injection molding of the armature, exposes the permanent magnet externally, and positions and limits the permanent magnet through the first limiting structure, which can simplify the parts, reduce the preparation and assembly difficulty, shorten the preparation period, and reduce the cost.

[0173] 2. In the magnetic latching relay provided by the present disclosure, the injection molding of the armature is cancelled, and the permanent magnet is exposed externally, and the permanent magnet is positioned and limited by the first extension arms on both sides of the coil holder and the first limiting structure, which can simplify the parts and reduce the period.

[0174] 3. The magnetic latching relay provided by the present disclosure, in which the armature, the permanent magnet and the yoke assembly are formed into a whole through the coil holder, so that the use of plastic can be reduced, and the design concept of low cost and no scrap can be achieved.

[0175] 4. In order to ensure the supporting effect of the second extension arm during the rotation of the armature, the magnetic latching relay provided by the present disclosure is provided with an auxiliary extension arm instead of thickening the thickness of the second extension arm in the third direction, so that good assembly can be ensured while the strength of the rotating shaft support is strengthened.

[0176] 5. The magnetic latching relay provided by the present disclosure, in which the armature is provided with a convex petal on the side facing the permanent magnet, and the convex petal forms an arc-shaped contact surface; the second contact surface is coplanar with the first contact surface, and the distance between the two and the convex petal is equal. This structure can meet the requirement of consistent arm swing length of the armature during the lapping process of the armature, so as to ensure the balance of the initial and final attraction of the magnetic circuit.

[0177] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, these embodiments can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus a detailed description of them will not be repeated.

[0178] The magnetic latching relay provided by the present disclosure includes a magnetic circuit system 100b and a base 200b, the magnetic circuit system 100b includes a coil holder 110b, a yoke assembly 130b, a permanent magnet 140b and an armature 150b, and the magnetic circuit system 100b is fixed to the base 200b through the coil holder 110b; the yoke assembly 130b is inserted into the coil holder 110b; the armature 150b is arranged opposite to the yoke assembly 130b to form a first direction X, and a containing space is formed between the armature 150b and the yoke assembly 130b; the permanent magnet 140b is placed in the containing space, and the permanent magnet 140b and the armature 150b are arranged in a split type.

[0179] It should be understood that the structure of the base 200b is not limited to that shown in FIGS. 16 and 17, and can be set in other forms according to requirements. For example, the base 200b can be a shell structure with a mounting cavity, so as to mount the magnetic circuit system 100b in the shell structure.

[0180] It should be noted that the magnetic latching relay provided by the embodiment of the present disclosure is of a split structure, and the armature 150b and the permanent magnet 140b are not required to be integrally embedded during the injection molding process, so that the parts are simple and easy to manufacture. The structure can improve the production efficiency and production quality of the parts and reduce the manufacturing cost. Moreover, the armature 150b and the permanent magnet 140b can be assembled by using a single machine for automatic assembly, which reduces the assembly difficulty and improves the assembly efficiency of the parts.

[0181] Moreover, the yoke assembly 130b is fixed to the base 200b by the coil holder 110b, and the yoke assembly 130b and the base 200b are not easy to collide. At the same time, since the external permanent magnet 140b is effectively positioned and limited by the first limiting structure, the permanent magnet 140b is not easy to scratch the base 200b. Accordingly, when assembling the magnetic circuit system 100b in the embodiment of the present disclosure, the magnetic circuit system 100b and the base 200b are not easy to produce the phenomenon of scratching, which can reduce the risk of foreign matter in the process.

[0182] Please refer to the structure shown in FIG. 22 in combination with FIGS. 16-21, the arc-shaped contact surface is provided between the armature 150b and the permanent magnet 140b, the armature 150b contacts one side magnetic pole of the permanent magnet 140b through the arc-shaped contact surface, and the armature 150b is rotationally arranged relative to the permanent magnet 140b through the arc-shaped contact surface, so that the two ends of the armature 150b are alternately contacted and matched with the yoke assembly 130b. It should be understood that the other side magnetic pole of the permanent magnet 140b contacts the yoke assembly 130b.

[0183] Specifically, the magnetic latching relay provided by the embodiment of the present disclosure uses one piece of armature 150b to rotate to complete the magnetic circuit lapping problem, the armature 150b contacts the permanent magnet 140b through the arc-shaped contact surface, the rotation support surface of the armature 150b is the surface of the permanent magnet 140b, and the two ends of the armature 150b are alternately contacted and matched with the yoke assembly 130b during the rotation process.

[0184] It is worth noting that, please continue to refer to the structure shown in FIGS. 16-18, the magnetic circuit system 100b further includes a coil 120b, and the coil 120b is wound on the surface of the coil holder 110b.

[0185] When the coil 120b is energized, the armature 150b swings under the joint action of the permanent magnet 140b and the yoke assembly 130b, and one end of the armature 150b is in contact with the yoke assembly 130b. At this time, the armature 150b, the permanent magnet 140b, and part of the yoke assembly 130b form a complete magnetic circuit, and an example of the magnetic circuit is shown by the solid arrow in FIG. 18. When the coil 120b is de-energized, the armature 150b swings in the opposite direction, and the other end of the armature 150b is in contact with the other part of the yoke assembly 130b. At this time, the armature 150b, the permanent magnet 140b, and the remaining part of the yoke assembly 130b form another complete magnetic circuit, and an example of the magnetic circuit is shown by the dashed arrow in FIG. 18.

[0186] Referring to FIGS. 18-24, the yoke assembly 130b and the armature 150b are provided with a first limiting structure for limiting the relative position of the permanent magnet 140b in the second direction Y, so as to avoid the permanent magnet 140b from moving in the second direction Y during assembly and use, thereby ensuring that the magnetic latching relay can effectively function. The second direction Y is perpendicular to the first direction X, and the second direction Y is perpendicular to the extension direction of the rotation axis of the armature 150b.

[0187] It should be noted that the magnetic latching relay provided in the embodiments of the present disclosure cancels the injection molding of the armature 150b, exposes the permanent magnet 140b, and positions and limits the permanent magnet 140b through the first limiting structure, which can simplify the parts, reduce the difficulty of preparation and assembly, shorten the preparation period, and reduce the cost.

[0188] When the first limiting structure is provided, there are many possibilities for the setting form of the first limiting structure.

[0189] In one specific embodiment, as shown in FIG. 18, the first limiting structure includes a first protrusion 1311b provided on the side of the yoke assembly 130b facing the armature 150b, and the first protrusion 1311b abuts against the opposite sides of the permanent magnet 140b in the second direction.

[0190] It should be noted that, as shown in FIG. 23, the number of the first protrusions 1311b on the surface of the yoke assembly 130b can be set according to requirements, but at least the first protrusions 1311b are arranged oppositely in the second direction Y to effectively limit the permanent magnet 140b in the second direction Y.

[0191] If the magnetic latching relay provided by the embodiments of the present disclosure is arranged horizontally, the second direction Y can be understood as the vertical direction. For example, the yoke assembly 130b in FIG. 23 is provided with three first protrusions 1311b, one first protrusion 1311b is located at the position close to the top of the yoke assembly 130b, and two first protrusions 1311b are located at the position close to the bottom of the yoke assembly 130b, and the two first protrusions 1311b located at the position close to the bottom are spaced apart in the third direction Z to effectively hold and limit the permanent magnet 140b.

[0192] In order to facilitate the assembly of the permanent magnet 140b in the limited space formed by the first protrusion 1311b, a guide slope M can be provided on the first protrusion 1311b as shown in FIG. 24, so as to facilitate the placement of the permanent magnet 140b and avoid the sharp corners of the first protrusion 1311b scratching the permanent magnet 140b and affecting the performance of the permanent magnet 140b.

[0193] It can be understood that the permanent magnet 140b and the armature 150b can be in direct contact, or a magnetic guide member can be provided and the permanent magnet 140b and the armature 150b can be indirectly contacted through the magnetic guide member. Similarly, the permanent magnet 140b and the yoke assembly 130b can be in direct contact, or a magnetic guide member can be provided and the permanent magnet 140b and the yoke assembly 130b can be indirectly contacted through the magnetic guide member.

[0194] It is worth noting that when assembling the magnetic latching relay provided by the embodiments of the present disclosure, after assembling each component, the permanent magnet 140b needs to be magnetized and pressed, and after the permanent magnet 140b is magnetized, it will be adsorbed on the surface of the yoke assembly 130b, and at the same time, the armature 150b is attracted by the permanent magnet 140b and will not fall off. Accordingly, when the permanent magnet 140b and the armature 150b are separately arranged, the permanent magnet 140b does not need to be pressed and limited in the first direction X by the armature 150b.

[0195] In another specific embodiment, the first limiting structure includes a recess and a protrusion that cooperate with each other, and one of the protrusion and the recess is arranged on the yoke assembly 130b, and the other is arranged on the permanent magnet 140b. For example, the permanent magnet 140b is provided with a protrusion, and the protrusion is inserted into the recess of the yoke assembly 130b to limit the relative position of the permanent magnet 140b in the second direction Y. Alternatively, the yoke assembly 130b is provided with a protrusion, and the protrusion is inserted into the recess of the permanent magnet 140b to limit the relative position of the permanent magnet 140b in the second direction Y.

[0196] In order to further improve the stability of the permanent magnet 140b after assembly and ensure that the permanent magnet 140b is assembled to the preset position, the permanent magnet 140b can be further limited in the third direction Z.

[0197] In one embodiment, the second limiting structure is arranged between the yoke assembly 130b and the armature 150b, and is configured to limit the relative position of the permanent magnet 140b in the third direction Z, which is perpendicular to the first direction X and the second direction Y. In this way, the first limiting structure and the second limiting structure arranged on the yoke assembly 130b are configured to limit or position the permanent magnet 140b.

[0198] In the case of the second limiting structure, there are various possible forms of arrangement.

[0199] In one specific embodiment, referring to the structure shown in FIG. 25, the second limiting structure includes a second protrusion 1312b arranged on the side of the yoke assembly 130b facing the armature 150b, and the second protrusion 1312b abuts the opposite sides of the permanent magnet 140b in the third direction Z. In this way, the first protrusion 1311b and the second protrusion 1312b arranged on the yoke assembly 130b are configured to limit or position the permanent magnet 140b.

[0200] Similarly, the number of second protrusions 1312b on the surface of the yoke assembly 130b can be arranged according to the number, and is not limited to two as shown in FIG. 25. The specific details are not described here. Moreover, the surface of the second protrusion 1312b can also be provided with a guide slope (not shown) as the first protrusion 1311b, to further reduce the assembly difficulty of the permanent magnet 140b.

[0201] In another specific embodiment, the second limiting structure includes a recess and a protrusion that cooperate with each other, and one of the protrusion and the recess is arranged on the yoke assembly 130b, and the other is arranged on the permanent magnet 140b. For example, the permanent magnet 140b is provided with a protrusion that is inserted into the recess of the yoke assembly 130b to limit the relative position of the permanent magnet 140b in the third direction Z. Alternatively, the yoke assembly 130b is provided with a protrusion that is inserted into the recess of the permanent magnet 140b to limit the relative position of the permanent magnet 140b in the third direction Z.

[0202] In another embodiment, referring to the structures shown in FIGS. 17, 26 and 27, the coil holder 110b is provided with an extension arm assembly, and the extension arm assembly includes two extension arm units arranged opposite to each other in the third direction Z, and each extension arm unit includes a first extension arm 111b extending in the first direction X, and the first extension arm 111b abuts one side of the permanent magnet 140b in the third direction Z, which is perpendicular to the first direction X and the second direction Y.

[0203] Specifically, compared with the structure in another embodiment, in the embodiment of the present disclosure, the yoke assembly 130b is only provided with the first protrusion 1311b, so that the size of the yoke assembly 130b does not have to be too large, the manufacturing cost can be reduced, and the manufacturing difficulty can be reduced.

[0204] Moreover, it should be noted that in the embodiment of the present disclosure, the armature 150b is not injection molded, and the permanent magnet 140b is exposed, and the permanent magnet 140b is positioned and limited by the first extension arms 111b and the first limiting structures on both sides of the coil holder 110b, which can simplify the parts and reduce the cycle.

[0205] Among them, the length of the first extension arm 111b in the first direction X can be set to be short according to the needs, so as to avoid the size being too long to abut against the armature 150b and affect the assembly of the armature 150b. Of course, the length of the first extension arm 111b in the first direction X cannot be too short, and the first extension arm 111b needs to ensure effective limiting of the permanent magnet 140b. At the same time, the thickness of the first extension arm 111b in the third direction Z can be set to be thick according to the needs, so as to ensure the limiting effect of the first extension arm 111b on the permanent magnet 140b in the third direction Z, and avoid that the thickness of the first extension arm 111b is too thin to exert enough clamping force on the permanent magnet 140b.

[0206] In one embodiment, please refer to the structure shown in FIGS. 26-27, the extension arm unit further includes a second extension arm 112b extending in the first direction X, and the second extension arm 112b is located on the side of the first extension arm 111b away from the permanent magnet 140b in the third direction Z; the armature 150b has a notch 152b in the third direction Z, and the second extension arm 112b is placed in the corresponding notch 152b to serve as a rotating force axis when the armature 150b rotates.

[0207] Specifically, the two second extension arms 112b located on both sides of the armature 150b in the third direction Z serve as rotating force axes when the armature 150b rotates, so as to define the rotating fulcrum of the armature 150b and ensure effective rotation of the armature 150b.

[0208] It should be noted that the structure in the embodiment of the present disclosure makes the armature 150b, the permanent magnet 140b, and the yoke assembly 130b form an integral whole through the coil holder 110b, which can reduce the use of plastic and achieve the design concept of low cost and no scrap.

[0209] It is worth noting that, please refer to the structure shown in FIG. 28, the armature 150b and the second extension arm 112b have a first gap in the second direction Y, and the two are not interference fit, so as to facilitate the rotation of the armature 150b and prevent the action from being jammed.

[0210] Of course, the first gap between the armature 150b and the second extension arm 112b in the second direction Y should not be too large to prevent the armature 150b from shaking too much during rotation. Preferably, the first gap between the armature 150b and the second extension arm 112b in the second direction Y is in the range of 0.03mm to 0.05mm.

[0211] It is worth noting that since the armature 150b needs to swing relative to the permanent magnet 140b through the convex bracket 151b, a support structure is needed as the fulcrum of the armature 150b swing. In one embodiment, a support structure fixed relative to the base 200b can be additionally provided as the force bearing shaft during the rotation of the armature 150b. In another embodiment, please refer to the structure shown in FIGS. 26 to 30, the extension arm unit further includes an auxiliary extension arm 113b extending in the first direction X, the auxiliary extension arm 113b is located on the side of the first extension arm 111b away from the permanent magnet 140b in the third direction Z, and the auxiliary extension arm 113b is located on the side of the second extension arm 112b in the third direction Z, the auxiliary extension arm 113b and the second extension arm 112b are located in the same gap 152b to serve as an auxiliary force bearing shaft during the rotation of the armature 150b.

[0212] In this case, the auxiliary extension arm 113b can also serve as a rotation force bearing shaft during the rotation of the armature 150b. If the second extension arm 112b cannot effectively provide support during the rotation of the armature 150b, the auxiliary extension arm 113b can function as an auxiliary force bearing shaft.

[0213] It should be noted that in order to ensure the support effect of the second extension arm 112b during the rotation of the armature 150b, the auxiliary extension arm 113b is provided in the embodiment of the present disclosure instead of thickening the thickness of the second extension arm 112b in the third direction Z, which can ensure good assembly and strengthen the support strength of the rotation shaft.

[0214] It is worth noting that, continuing to refer to the structure shown in FIG. 28, the armature 150b and the auxiliary extension arm 113b have a second gap in the second direction Y, and the two are not interference fit to facilitate the rotation of the armature 150b and prevent the action from being stuck. The second gap can be a little larger under the condition of ensuring the strength. Of course, the second gap between the armature 150b and the second extension arm 112b in the second direction Y should not be too large to prevent the armature 150b from shaking too much during rotation. Preferably, the second gap between the armature 150b and the second extension arm 112b in the second direction Y is in the range of 0.03mm to 0.1mm.

[0215] In a specific embodiment, the size of the second gap in the second direction Y is greater than the size of the first gap in the second direction Y to ensure that the second extension arm 112b plays a major supporting role during the rotation of the armature 150b.

[0216] Please refer to the structure shown in FIG. 30, the thickness of the second extension arm 112b in the third direction Z is greater than the thickness of the auxiliary extension arm 113b in the third direction Z, so as to improve the support effect on the armature 150b during rotation.

[0217] It is worth noting that, as shown in FIG. 26, along the second direction Y, the second extension arm 112b is located between the first extension arm 111b and the auxiliary extension arm 113b on the same side. At this time, it can also be provided that: along the third direction Z, the first extension arm 111b and the second extension arm 112b form an integral whole, so as to effectively support the second extension arm 112b by the first extension arm 111b.

[0218] Of course, the auxiliary extension arm 113b can also be placed between the first extension arm 111b and the second extension arm 112b according to needs, which can be set according to needs and will not be described here.

[0219] Please continue to refer to the structure shown in FIG. 26, the end of the auxiliary extension arm 113b away from the coil 120b in the first direction X is provided with a anti-off structure 1131b for preventing the armature 150b from coming off in the first direction X. Of course, an anti-off structure can also be provided at the end of the second extension arm 112b away from the coil 120b in the first direction X, which will not be described in detail.

[0220] In one embodiment, please combine the structures shown in FIGS. 26-28, the wall surface of the armature 150b forming the notch 152b has a horizontal extension section P1b and an inclined extension section P2b, the inclined extension section P2b is located on the side of the horizontal extension section P1b close to the permanent magnet 140b; along the second direction Y, two horizontal extension sections P1b are oppositely arranged on both sides of the second extension arm 112b, and two inclined extension sections P2b are oppositely arranged on both sides of the second extension arm 112b; and along the direction of the armature 150b pointing to the permanent magnet 140b, the distance between the two oppositely arranged inclined extension sections P2b in the second direction Y gradually increases.

[0221] Specifically, when the armature 150b is in a vertical state along the second direction Y, the horizontal extension section P1b is substantially parallel to the surface of the second extension arm 112b; when the armature 150b rotates relative to the permanent magnet 140b, one inclined extension section P2b approaches the second extension arm 112b along the second direction Y, and the other inclined extension section P2b moves away from the second extension arm 112b along the second direction Y.

[0222] For example, if the top end of the armature 150b is close to the yoke assembly 130b in the second direction Y, the inclined extension P2b close to the top end of the two inclined extensions P2b moves in the second direction Y towards the second extension arm 112b. At this time, the bottom end of the armature 150b is away from the yoke assembly 130b in the second direction Y, and the inclined extension P2b close to the bottom end of the two inclined extensions P2b moves in the second direction Y away from the second extension arm 112b.

[0223] It should be noted that when forming the structure of the armature 150b, a chamfering process can be performed on the surface of the armature 150b to form the inclined extension P2b, and the inclination of the inclined extension P2b affects the rotation angle of the armature 150b, which needs to be set according to the requirements.

[0224] When forming the notch 152b on the armature 150b, there are many possibilities for the formation of the notch 152b. In one embodiment, portions can be cut on both sides of the flat plate-shaped armature 150b to form the notch 152b. Alternatively, in another embodiment, as shown in the structure shown in FIG. 22, the armature 150b can be provided with a protrusion group 153b in the third direction Z, the protrusion group 153b includes two protrusions 1531b spaced apart in the second direction Y, and the notch 152b is formed between the two protrusions 1531b. It should be noted that since the protrusion group 153b protrudes from the surface of the flat plate-shaped armature 150b, the assembly difficulty can be reduced, and the volume and size of the armature 150b can be reduced, which is beneficial to the miniaturization and light weight of the magnetic circuit relay.

[0225] It should be noted that there are many possibilities for the winding form of the coil 120b on the surface of the coil holder 110b. In a specific embodiment, as shown in FIGS. 16-18, the coil 120b includes a first portion 121b and a second portion 122b, the second portion 122b is spaced apart from the first portion 121b in the second direction Y, and the coil holder 110b is provided with a partition between the first portion 121b and the second portion 122b. The extension arm unit extends from the partition position to limit the permanent magnet 140b and provide a force axis for the rotation of the armature 150b.

[0226] In one embodiment, please continue to refer to the structure shown in FIGS. 16-21, the yoke assembly 130b includes a first contact portion 131b and a second contact portion 132b arranged opposite in the second direction Y, the first contact portion 131b is used to contact and cooperate with one end of the armature 150b to form a first contact surface, and the second contact portion 132b is used to contact and cooperate with the other end of the armature 150b to form a second contact surface, the second contact surface is coplanar with the first contact surface to improve the contact effect of the armature 150b and the yoke assembly 130b.

[0227] Wherein, since the first and second contact surfaces are arranged in the same plane, the armature 150b can be arranged in a substantially flat plate structure.

[0228] As an example, please continue to refer to the structure shown in FIGS. 16-21, the first and second contact portions 131b and 132b are located on opposite sides of the coil 120b in the second direction Y and are fixed relative to the coil 120b; each of the first and second contact portions 131b and 132b extends from the fixed point with the coil 120b to one side of the armature 150b; and at least part of the first and second contact portions 131b and 132b extends between the coil 120b and the armature 150b to be arranged opposite the armature 150b. It can be understood that the extension size of the first contact portion 131b in the second direction Y is greater than the extension size of the second contact portion 132b in the second direction Y in FIG. 16.

[0229] For example, in the embodiment of the present disclosure, the first contact portion 131b is located away from the base 200b in the second direction Y, and the permanent magnet 140b is arranged at the first contact portion 131b. Of course, the first contact portion 131b can also be arranged close to the base 200b in the second direction Y, or part of the first contact portion 131b extends from the inside of the base 200b, which will not be described in detail.

[0230] It is worth noting that when the arc-shaped contact surface between the armature 150b and the permanent magnet 140b is arranged, there are many possibilities for the form of the arc-shaped contact surface. For example, as shown in FIG. 22, the armature 150b is provided with a convex calyx 151b on the side facing the permanent magnet 140b, the convex calyx 151b forms an arc-shaped contact surface, and the armature 150b contacts the permanent magnet 140b through the arc-shaped contact surface; or the permanent magnet 140b is provided with a convex calyx on the side facing the armature 150b, the convex calyx forms an arc-shaped contact surface, and the armature 150b contacts the permanent magnet 140b through the arc-shaped contact surface.

[0231] Wherein, when the convex calyx 151b is arranged on the armature 150b, the convex calyx 151b and the armature 150b can be an integral structure to improve the stability of the rotation of the armature 150b. Of course, the armature 150b and the convex calyx 151b can also be arranged in a split structure according to requirements, which will not be described in detail here.

[0232] Similarly, the convex calyx and the permanent magnet 140b can be arranged in the form of the convex calyx 151b and the armature 150b, which will not be described in detail here.

[0233] In one specific embodiment, when the armature 150b is provided with a convex bracket 151b on the side facing the permanent magnet 140b, the convex bracket 151b forms an arc-shaped contact surface, and the second contact surface can be arranged to have a dimension equal to that of the first contact surface from the convex bracket 151b in the second direction Y. It should be noted that in the present embodiment, the second contact surface is coplanar with the first contact surface, and the two have equal dimensions from the convex bracket 151b. This arrangement can meet the requirement of consistent arm swing length of the armature 150b during the lapping process, so as to ensure the balance between the initial attraction and the final attraction of the magnetic circuit.

[0234] In one embodiment, please continue to refer to the structure shown in FIGS. 18-21, the yoke assembly 130b further comprises a core 133b inserted into the coil 120b, and the first contact portion 131b is fixed to one end of the core 133b exposed from the coil 120b, and the second contact portion 132b is fixed to the other end of the core 133b exposed from the coil 120b.

[0235] It should be noted that the core 133b, the first contact portion 131b and the second contact portion 132b in the yoke assembly 130b can be an integrated structure, or a segmented structure. For example, when the core 133b, the first contact portion 131b and the second contact portion 132b are in a segmented structure, the core 133b can be inserted through the coil holder 110b, and then the first contact portion 131b and the second contact portion 132b are riveted on both sides.

[0236] Please continue to refer to the structure shown in FIGS. 18-22, in the present embodiment, the armature 150b and the permanent magnet 140b are in line contact. The convex bracket 151b is in the shape of a long strip and extends in a direction parallel to the rotation axis of the armature 150b.

[0237] In one embodiment, the coil holder 110b and the base 200b are an integrated structure, so as to improve the relative stability between the coil holder 110b and the base 200b, and further improve the stability of other structures assembled on the coil holder 110b, so as to reduce the assembly steps and improve the assembly efficiency.

[0238] In addition, it should be noted that since the coil holder 110b and the base 200b are an integrated structure, they can be prepared by casting, so as to reduce the preparation difficulty and cost.

[0239] Finally, it should be noted that it can be understood that the various embodiments / embodiments provided by the present disclosure can be combined with each other without contradiction, which will not be illustrated one by one here.

[0240] In the embodiments of the utility model, the terms "first", "second", "third" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connecting" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0241] In the description of the embodiments of the utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the embodiments of the utility model.

[0242] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0243] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and the utility model can have various changes and changes for those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A magnetic latching relay, characterized by, The magnetic circuit structure comprises a yoke assembly, a permanent magnet, an armature and a clamping plate assembly, wherein: The armature and the yoke assembly are oppositely arranged in a first direction; the permanent magnet is arranged between the armature and the yoke assembly along the first direction and is fixed relative to the yoke assembly, and the yoke assembly contacts one side magnetic pole of the permanent magnet in the first direction; the permanent magnet and the armature are arranged in a split mode, and the armature contacts another side magnetic pole of the permanent magnet in the first direction; The clamping plate assembly comprises two clamping plates, the two clamping plates clamp the armature and the permanent magnet in a second direction, and the two clamping plates limit the armature and the permanent magnet in a third direction; the second direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction and the first direction.

2. The magnetic latching relay of claim 1, wherein, A first positioning structure is arranged between the clamping plate and the permanent magnet, and the first positioning structure is used to limit the relative position of the permanent magnet in the third direction.

3. The magnetic latching relay of claim 2, wherein, The first positioning structure comprises a first protruding portion arranged on one side of one of the clamping plates facing the other clamping plate, and the first protruding portion abuts against both sides of the permanent magnet in the third direction.

4. The magnetic latching relay of claim 1, wherein, A second positioning structure is arranged between the clamping plate and the armature, and the second positioning structure is used to limit the relative position of the armature in the third direction.

5. The magnetic latching relay of claim 4, wherein, The second positioning structure comprises a groove arranged on one side of one of the clamping plates facing the other clamping plate and a second protruding portion arranged on the surface of the armature, the second protruding portion is arranged in the groove, and the armature can rotate relative to the inner wall of the groove through the second protruding portion.

6. The magnetic latching relay of claim 5, wherein, The groove penetrates through both sides of the clamping plate in the second direction, and the second protruding portion does not exceed the surface of the clamping plate away from the other clamping plate.

7. A latching relay according to any one of claims 1-6, c h a r a c t e r i z e d i n that A third positioning structure is arranged between the clamping plate and the yoke assembly, and the yoke assembly is fixed to the clamping plate assembly through the third positioning structure.

8. The magnetic latching relay of claim 7, wherein, The third positioning structure comprises a protruding portion and a recess portion which are matched with each other, one of the protruding portion and the recess portion is arranged on the clamping plate, and the other is arranged on the yoke assembly.

9. A latching relay according to any one of claims 1-6, characterized in that An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotationally arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature are alternately contacted and matched with the yoke assembly.

10. The magnetic latching relay of claim 9, wherein, The yoke assembly comprises a first contact portion and a second contact portion oppositely arranged in the third direction, the first contact portion is used to contact and match one end of the armature to form a first beating surface, and the second contact portion is used to contact and match the other end of the armature to form a second beating surface; the second beating surface is coplanarly arranged with the first beating surface; and the permanent magnet is fixed to the first contact portion.

11. The magnetic latching relay of claim 9, wherein, The yoke assembly comprises a first contact portion, a second contact portion and a third contact portion, the first contact portion and the second contact portion are oppositely arranged along the third direction, and the third contact portion is arranged between the first contact portion and the second contact portion; the first contact portion is used for contact matching with one end of the armature to form a first beating surface, the second contact portion is used for contact matching with the other end of the armature to form a second beating surface, and the second beating surface is coplanarly arranged with the first beating surface; and the permanent magnet is fixed to the third contact portion.

12. A latching relay according to any one of claims 1-6, characterized in that The yoke assembly comprises a first contact portion; the clamping plate type magnetic circuit structure further comprises a coil holder, a coil wound on the surface of the coil holder and a core inserted into the coil; and the first contact portion is fixed to one end of the core exposed from the coil. An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature are alternately contact matched with the first contact portion and the other end of the core.

13. A latching relay according to any one of claims 1-6, characterized in that The yoke assembly comprises a first contact portion and a core; the clamping plate type magnetic circuit structure further comprises a coil holder and a coil wound on the surface of the coil holder; and the core is inserted into the coil, and the first contact portion is fixed to one end of the core exposed from the coil. An arc-shaped contact surface is arranged between the armature and the permanent magnet, the armature contacts one side magnetic pole of the permanent magnet through the arc-shaped contact surface, and the armature is rotatably arranged relative to the permanent magnet through the arc-shaped contact surface, so that the two ends of the armature are alternately contact matched with the first contact portion and the other end of the core.

14. A latching relay according to any one of claims 1-6, characterized in that The clamping plate type magnetic circuit structure is fixed to the base through the clamping plate assembly.

15. The magnetic latching relay of claim 14, wherein, The base comprises a seat body and a surrounding plate extending from the seat body, the surrounding plate forms a surrounding space, and at least part of the magnetic circuit system is arranged in the surrounding space.

16. The magnetic latching relay of claim 15, wherein, The surrounding plate is provided with a guide sliding groove extending along the third direction on the opposite sides in the second direction. One of the clamping plates is provided with a guide protrusion on the side away from the other clamping plate, and the guide protrusion is arranged in the guide sliding groove.

17. The magnetic latching relay of claim 16, wherein, The clamping plate is provided with a clamping protrusion, the clamping protrusion protrudes from the surface of the guide protrusion in the first direction, and is clamped to the inner wall surface of the guide sliding groove.

18. The magnetic latching relay of claim 16, wherein, The two clamping plates are symmetrically arranged about the guide protrusion in the first direction.

19. The magnetic latching relay of claim 14, wherein, The clamping plate is provided with an anti-disengagement structure.

20. The magnetic latching relay of claim 19, wherein, The anti-disengagement structure comprises a fixed groove arranged on the base and a protruding portion arranged on the clamping plate, and the protruding portion is in interference fit with the fixed groove.

21. The magnetic latching relay of claim 19, wherein, The anti-disengagement structure comprises a fixed groove arranged on the base and a protruding portion arranged on the clamping plate, the fixed groove is a through groove, the protruding portion extends from the surface of the fixed groove to the opposite side of the permanent magnet, and the part of the protruding portion extending out of the fixed groove is provided with a barb, and the barb is clamped to the surface of the fixed groove away from the permanent magnet.

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