CN219873356U - Reed structure and magnetic latching relay - Google Patents

Abstract

The embodiment of the utility model provides a reed structure and a magnetic latching relay. The reed structure comprises two parallel movable springs, and each movable spring comprises a reed part, a movable contact and a fixed contact. Wherein, the movable contact and the stationary contact are arranged at two opposite ends of the reed part; the movable contact and the fixed contact of one movable spring respectively correspond to the fixed contact and the movable contact of the other movable spring, so that when the movable contact and the fixed contact are closed, the two movable springs form a parallel circuit structure. Each reed part is provided with at least one bending part, and the bending parts of the two reed parts are arranged in a one-to-one correspondence manner so as to form bending pairs; in each bending pair, the top ends of the two bending parts are parallel, the two bending parts protrude along the same protruding direction, and the first interval between the two bending parts is smaller than the second interval between the two ends of the two reed parts. The reed structure can effectively increase the contact pressure between the movable contact and the fixed contact, and further effectively resist short-circuit current.

Description

Reed structure and magnetic latching relay

Technical Field

The utility model relates to the technical field of relays, in particular to a reed structure and a magnetic latching relay.

Background

The magnetic latching relay is an automatic switch, and plays roles in switching on and switching off a circuit. The magnetic latching relay comprises a reed structure and a coil, wherein the reed structure is provided with at least two reeds, one reed is provided with a movable contact, the other reed is provided with a static contact, and when the coil is electrified with forward pulse voltage, the movable contact and the static contact are contacted, and a circuit is conducted; when the coil is electrified with reverse pulse voltage, the movable contact and the fixed contact are disconnected, and the circuit is disconnected.

In the related art, a short circuit is easily generated in a circuit, so that the capability of the magnetic latching relay for resisting the short circuit current needs to be improved, namely, the contact pressure between a movable contact and a fixed contact is increased to resist the repulsive force generated when the short circuit current passes through the movable contact and the fixed contact, so that the movable contact and the fixed contact are not easy to be disconnected. However, the related art does not effectively increase the contact pressure between the moving and static contacts.

The above information disclosed in the background section is only for enhancement of understanding of the background of the utility model and therefore it may contain information that does not form the related art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The embodiment of the utility model provides a reed structure which can effectively increase the contact pressure between a movable contact and a static contact so as to effectively resist short-circuit current.

According to an aspect of the present utility model, there is provided a reed structure including two side-by-side movable springs each including a reed part, a movable contact, and a stationary contact.

Wherein, the movable contact and the stationary contact are arranged at two opposite ends of the reed part; the movable contact and the fixed contact of one movable spring respectively correspond to the fixed contact and the movable contact of the other movable spring, so that when the movable contact and the fixed contact are closed, the two movable springs form a parallel circuit structure. Each reed part is provided with at least one bending part, and the bending parts of the two reed parts are arranged in a one-to-one correspondence manner so as to form bending pairs; in each bending pair, the top ends of the two bending parts are parallel, the two bending parts protrude along the same protruding direction, and the first interval between the two bending parts is smaller than the second interval between the two ends of the two reed parts.

In some embodiments of the utility model, at least part of the bending portion located upstream is accommodated in a space formed by the convex portion of the bending portion located downstream in the convex direction.

In some embodiments of the present utility model, the number of the bending pairs is plural, and a third interval is provided between two reed parts located between adjacent bending pairs, and the third interval is larger than the first interval.

In some embodiments of the utility model, the convex direction comprises a first direction and a second direction opposite to each other, and in the plurality of pairs of bends, a part of the bends protrude toward the first direction and another part of the bends protrude toward the second direction.

In some embodiments of the utility model, in each of the pairs of bends, the opening of the bend located downstream is sized larger than the top end of the bend located upstream such that the top end of the bend located upstream is received in the opening of the bend located downstream.

In some embodiments of the utility model, each of the folds is any one of trapezoidal, rectangular, square, pentagonal, hexagonal, and octagonal in shape.

In some embodiments of the utility model, each of the leaf portions comprises a plurality of stacked leaves with gaps between adjacent leaves.

In some embodiments of the utility model, the reed portion has a plurality of the gaps in the direction of the reed stack, and the plurality of the gaps are different in size.

In some embodiments of the utility model, the reed structure further comprises a protrusion disposed in the gap and connected to at least one of the reeds.

In some embodiments of the utility model, the protrusions are disposed in a gap of at least one of the reed portions between adjacent pairs of the bends.

In some embodiments of the utility model, the protrusion has a plurality of protrusions provided in the gaps of the plurality of reeds of at least one of the reed parts; wherein, in one of the reed parts: the protrusions are aligned in the protruding direction; or, the buds are staggered in the protruding direction; or, a part of the protrusions are aligned in the protruding direction.

In some embodiments of the utility model, the bud is disposed in the gaps of a plurality of the reeds of two of the reed parts.

In some embodiments of the utility model, the number of the protrusions provided on the two reed parts is the same or different.

In some embodiments of the utility model, the protrusions provided on both of the leaf portions are aligned or staggered in the protruding direction.

In some embodiments of the utility model, the bud is provided only in the gaps of the plurality of the reeds of one of the reed parts.

In some embodiments of the utility model, the dimension of the protrusion is less than or equal to the dimension of the gap in the protruding direction.

The embodiment of the utility model also provides a magnetic latching relay, which comprises the reed structure in any embodiment.

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

in the embodiment of the utility model, the bending pairs are arranged on the reed parts, the first distance between the two bending parts of each bending pair is smaller than the second distance between the two ends of the two reed parts, the distance between the two reed parts is reduced, and in a parallel circuit structure formed by the two movable springs, current is absorbed in the same direction to generate electric power, so that after the distance between the two reed parts is reduced, the electric power of the two reed parts can be increased, meanwhile, in each bending pair, the top ends of the bending parts are parallel, the horizontal component of the electric power is reduced, and meanwhile, the effective length of the reed parts can be increased by the bending parts, and the electric power of the two reed parts is further increased, so that the contact pressure between the movable contact and the stationary contact is effectively increased, the movable contact and the stationary contact are not easy to break, and the short-circuit current is effectively resisted. In addition, through setting up the buckling pair, the magnitude of the electrodynamic force that receives of reed can be adjusted in a flexible way according to short-circuit current's magnitude.

Drawings

The above and other features and advantages of the present utility model will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Figure 1 is a front schematic view of a reed structure shown in some embodiments of the present utility model;

fig. 2 is a schematic perspective view of a reed structure according to some embodiments of the present utility model;

fig. 3 is a schematic perspective view of a reed structure according to another view angle according to some embodiments of the present utility model;

fig. 4 is a schematic diagram of a movable spring in a reed structure according to some embodiments of the present utility model;

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

fig. 6 is a schematic diagram of another movable spring in the spring structure according to some embodiments of the present utility model;

FIG. 7 is an enlarged view at B in FIG. 6;

FIG. 8 is an exploded view of a moving spring according to some embodiments of the present utility model;

FIG. 9 is a front view of a reed structure with a protrusion according to an embodiment of the present utility model;

fig. 10 is an enlarged view of fig. 9 at C;

figure 11 is a front view of a reed structure according to some embodiments of the present utility model;

fig. 12 is an enlarged view of D in fig. 11;

FIG. 13 is a schematic perspective view of a magnetic latching relay according to some embodiments of the present utility model;

FIG. 14 is a schematic top view of a magnetic latching relay with a cover removed according to some embodiments of the present utility model;

fig. 15 is a schematic perspective view of a magnetic latching relay according to some embodiments of the present utility model with the cover and the mount removed.

Reference numerals illustrate:

100. a reed structure; 1. 1', a movable spring; 11. 11', a reed part; 111. 111', a bending portion; 112. 112', reed; 1121. a gap; 12. 12', a movable contact; 13. 13', stationary contacts; 14. a bud; 141. a central axis; 151. a first movable spring leading-out piece; 152. a second movable spring leading-out piece; 16. 16', a compression spring; 200. a housing; 21. a base; 22. a cover body; 300. a magnetic circuit structure; 31. a coil assembly; 311. a coil former; 312. a coil; 32. a yoke assembly; 321. a first yoke; 322. a second yoke; 33. a permanent magnet; 331. a rotating shaft; 34. an armature; 400. pushing the card; 500. a fixing frame; x, horizontal direction; y, protruding direction; y1, a first direction; y2, the second direction; d1, a first interval; d2, a second interval; d3, a third interval; h1, the size of the bud; h2, the size of the gap.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

An embodiment of the present utility model provides a reed structure 100, as shown in fig. 1, the reed structure 100 includes: two parallel moving springs 1, 1'. The two moving springs 1, 1' have the same structure. Each movable spring 1, 1 'comprises a spring part 11, 11', a movable contact 12, 12 'and a stationary contact 13, 13'. Wherein the movable contacts 12, 12' and the stationary contacts 13, 13' are provided at opposite ends of the reed parts 11, 11 '. The movable contact 12 and the stationary contact 13 of one movable spring 1 correspond to the stationary contact 13 'and the movable contact 12' of the other movable spring 1', respectively, so that when the movable contacts 12, 12' and the stationary contacts 13', 13 are closed, the two movable springs 1, 1' form a parallel circuit structure. Each reed part 11, 11 'has at least one bending part 111, 111', and the bending parts 111, 111 'of the two reed parts 11, 11' are arranged in a one-to-one correspondence to form bending pairs. In each bending pair, the top ends of the two bending portions 111, 111 'are parallel, and the two bending portions 111, 111' protrude in the same protruding direction Y, and a first distance d1 between the two bending portions 111, 111 'is smaller than a second distance d2 between both ends of the two reed portions 11, 11'.

In the reed structure 100 of the embodiment of the present utility model, the bent pairs are disposed on the reed portions 11 and 11', and the first distance d1 between the two bent portions 111 and 111' in each bent pair is smaller than the second distance d2 between the two ends of the two reed portions 11 and 11', so that the distance between the two reed portions 11 and 11' is reduced, and in the parallel circuit structure formed by the two movable springs 1 and 1', current is absorbed in the same direction to generate electric force, so that after the distance between the two reed portions 11 and 11' is reduced, the electric force of the two reed portions 11 and 11 'can be increased, and meanwhile, in each bent pair, the top ends of the bent portions 111 and 111' are parallel, the horizontal component of the electric force can be reduced, and the electric force of the two reed portions 11 and 11 'is further increased, so that the contact pressure between the movable contacts 12 and 12' and the stationary contacts 13 'can be effectively increased, and the contact pressure between them and the stationary contacts 13' are not easily broken, and the short circuit current is effectively resisted.

The reed structure 100 of the embodiment of the present utility model will be described in detail.

In some embodiments, as shown in fig. 1 to 4, a movable spring 1 is illustrated as an example. The reed part 11 of the movable reed 1 includes a plurality of stacked reeds 112 with a gap 1121 between adjacent reeds 112. Wherein the movable contact 12 and the stationary contact 13 may pass through both ends of the plurality of stacked reed pieces 112, respectively, so that the movable contacts 12, 12' and the stationary contacts 13', 13 of the two reed parts 11, 11' can be in contact with each other.

In some embodiments, as shown in fig. 1 and 2, the bending portion 111 is formed by bending the reed portion 11, and the bending portion 111 can be protruded along a protruding direction Y. The protruding direction Y is understood to be a direction perpendicular to the surface of the reed part 11, and includes, as shown in fig. 1, a first direction Y1 and a second direction Y2 which are opposite to each other. When there is one pair of bends, the pair of bends may protrude in the first direction Y1 or the second direction Y2. When the plurality of bending pairs are provided, the plurality of bending pairs can be protruded in the first direction Y1, can be protruded in the second direction Y2, or can be partially protruded in the first direction Y1, and the other partially protruded in the second direction Y2, which is not particularly limited herein. When there are a plurality of bending pairs, since the protruding directions Y of the plurality of bending pairs may not be the same, as shown in fig. 1, the protruding directions Y of the bending pairs located at the left and right sides in fig. 1 are different, the protruding direction Y of the bending pair located at the left side is the first direction Y1, and the protruding direction Y of the bending pair located at the right side is the second direction Y2, and thus, the protruding direction Y of the bending pair described in the embodiment of the present utility model refers to the protruding direction of the bending pair, for example, the protruding direction Y of the bending pair at the left side is the first direction Y1, and not to the second direction Y2.

As shown in fig. 4, since the reed part 11 includes a plurality of stacked reeds 112, the opening size of the bent part 111 of each reed 112 may be different. The opening size can be understood as the size of the opening of the bent portion 111 in the horizontal direction X. The horizontal direction X may be defined as an extending direction of the reed 112, which is perpendicular to the protruding direction Y.

In some embodiments, at least part of the upstream-located bent portion 111 is accommodated in a space (not shown in the drawings) formed by the protruding portion of the downstream-located bent portion 111' in the protruding direction Y such that a first spacing d1 of the two bent portions 111, 111' in each bent pair is smaller than a second spacing d2 of both ends of the two reed portions 11, 11 '.

In some embodiments, as shown in fig. 3 and 4, in the reed part 11, the opening size of the bent parts 111 of the plurality of reeds 112 in the protruding direction Y thereof becomes gradually larger, so that the bent part 111 formed by the downstream reed 112 can accommodate the bent part 111 formed by the upstream reed 112 in the protruding direction Y thereof, thereby making the whole of the reed part 11 form the bent part 111.

In some embodiments, as shown in fig. 1 to 4 and 6, in each bending pair, in the protruding direction Y thereof, the size of the opening of the bending portion 111 'located downstream is larger than the size of the tip of the bending portion 111 located upstream, so that the tip of the bending portion 111 located upstream can be accommodated in the opening of the bending portion 111' located downstream.

Specifically, the size of the opening at the bent portion 111 refers to the size of the opening of the bent portion 111 in the horizontal direction X, and the size of the tip of the bent portion 111 refers to the largest size of the tip of the bent portion 111 in the horizontal direction X. In this way, the tip of the upstream-located bent portion 111 can be accommodated in the opening of the downstream-located bent portion 111', and thus the first distance d1 of the two bent portions 111, 111' in the pair of bends can be reduced. The first distance d1 may be understood as a distance between a top end of the bending portion 111 located upstream to a bottom end of the bending portion 111' located downstream in the bending pair. Wherein, the top end of the upstream bending part 111 refers to the top end of the protruding part, and the bottom end of the downstream bending part 111' refers to the part of the protruding part nearest to the upstream bending part 111. Therefore, the first pitch d1 is shortened compared to the second pitch d2 of both ends of the two reed parts 11, 11'. The second distance d2 between the two ends of the two spring leaf portions 11, 11 'is understood to be the distance between the two ends of the spring leaf portions 11, 11' with the movable contacts 12, 12 'and the stationary contacts 13, 13'.

When the two movable springs 1 and 1' are electrified, the movable contact 12 and the fixed contact 13' are attracted, the movable contact 12' and the fixed contact 13 are attracted, the two movable springs 1 and 1' form a parallel circuit, and the current flowing through the two reed parts 11 and 11' is in the same direction. According to the principle of current co-directional attraction, the two reed parts 11 and 11' are necessarily attracted to each other, the first distance d1 between the two reed parts 11 and 11' is reduced at the bent parts 111 and 111', so that the electromotive force of the mutual attraction of the two reed parts 11 and 11' is improved, and meanwhile, the effective length of the reed parts 11 and 11' can be increased by the bent parts 111 and 111', so that the contact pressure between the movable contacts 12 and 12' and the fixed contacts 13' and 13 can be increased, the movable contacts 12 and 12' and the fixed contacts 13' and 13' are prevented from being disconnected when the repulsive force of short-circuit current is received, the short-circuit current can be resisted, and the running stability of a circuit is ensured.

In practice, the electrodynamic forces are formed by ampere forces (lorentz forces). The two moving springs 1, 1 'can be regarded as two parallel wires, when the moving springs 1, 1' are electrified, the two reed parts 11, 11 'generate magnetic fields around the moving springs, and due to the flowing of current and the action of the magnetic fields, one reed part 11 receives ampere force of the other reed part 11', so that the moving springs and the moving springs attract each other, the contact pressure of the moving contacts 12, 12 'and the fixed contacts 13', 13 at two ends can be increased by the mutual attraction of the moving springs and the moving springs, and the attraction of the moving springs and the fixed contacts is firmer.

However, in some embodiments, taking the movable spring 1 as an example, the spring 112 of the spring portion 11 has a certain flexibility, that is, the rigidity of the spring 112 is low. This is because, when the reed 112 is pushed to close the movable contact 12 and the stationary contact 13 'of the other reed part 11', the reed 112 has a certain elasticity to cause an overstroke, and further the contact of the movable contact 12 and the stationary contact 13 'of the other reed part 11' is more stable and is not easily sprung. However, it is also because the reed 112 has a certain flexibility, when the reed 112 receives an electromotive force, the reed 112 bends in a direction in which the other reed 112' approaches with the middle portion as a fulcrum, and the middle portion is deformed by a large amount, so that the two ends of the reed 112 are tilted in opposite directions. As shown in fig. 11 and 14, the movable springs 1, 1 'of the reed structure 100 further include a compression spring 16, 16', and in the example of the movable spring 1, one end of the compression spring 16 is connected to the movable contact 12, and the other end is used to connect to the push card 400 of the magnetic latching relay. If the two ends of the reed 112 are tilted, that is, the two ends of the movable spring 1 are tilted, the movement of the pressure spring 16 drives the push card 400 to move, so that the whole magnetic latching relay is in an unstable state, and the electrical performance of the magnetic latching relay may be affected. In order to avoid the above, in the embodiment of the present utility model, when the number of bending pairs is set to be plural, the two reed parts 11, 11' located between the adjacent bending pairs have the third pitch d3, and the third pitch d3 is larger than the first pitch d1.

That is, the distance between the flat portions of the two reed parts 11, 11' between the adjacent two bending pairs may be larger than the distance between the two bending parts 111, 111' of one bending pair, so that the electric force received by the flat portions is smaller than the electric force received by the bending parts 111, 111', and is larger than the electric force received by the two ends of the reed parts 11, 11' provided with the movable contacts 12, 12' and the stationary contacts 13, 13', the deformation amount thereof is reduced, and the occurrence of the situation that the two ends of the reed parts 11, 11' are lifted due to the excessive deformation amount thereof is avoided. Meanwhile, since the plurality of reeds 112 of the reed part 11 have the gaps 1121 therebetween, in the reed part 11, the deformations of the respective reeds 112 do not affect each other, i.e., do not overlap each other, further avoiding the situation that the contact pressure between the movable contact 12 and the stationary contact 13' is affected by the excessive deformation amount of the entire reed part 11. The reed part 11' is the same as the reed part 11, and will not be described here again.

In some embodiments, the third distance d3 between the straight portions of the two reed parts 11, 11' between the adjacent two bending pairs may also be smaller than or equal to the second distance d2 between the two ends of the two reed parts 11, 11' (the two ends provided with the movable contacts 12, 12' and the stationary contacts 13, 13 ') so that the electromotive force received by the straight portions can be applied to the movable contacts 12, 12 and the stationary contacts 13', 13 to increase the contact pressure therebetween.

In some embodiments, when the flexibility of the reed 112, 112' is greater, the third distance d3 between the straight portions of the two reed parts 11, 11' between the adjacent two bending pairs may also be greater than the second distance d2 between the two ends of the two reed parts 11, 11' (the two ends provided with the movable contact 12, 12' and the stationary contact 13, 13 ') to further prevent the reed 112, 112' from being deformed excessively when receiving the electric force, which may cause the two ends of the reed 112, 112' to tilt.

In some embodiments, each bend 111, 111' may be any of trapezoidal, rectangular, square, and other polygonal shapes in shape. As shown in fig. 1, in the embodiment of the present utility model, the bending portions 111, 111 'of each reed portion 11, 11' are trapezoidal bends, and the top ends of the plurality of bending portions 111, 111 'extend along the horizontal direction X, that is, the top ends of the plurality of bending portions 111, 111' are parallel, so that the electric forces received by the two bending portions 111, 111 'are perpendicular to themselves respectively, and no oblique electric force is generated, thereby reducing the component of the electric force along the horizontal direction X and increasing the electric force received by each reed portion 11, 11'. With continued reference to fig. 1, the sidewalls of the plurality of bent portions 111, 111 'may also be parallel to each other so that the force of the two reed portions 11, 11' attracting each other is maximized, further increasing the electromotive force.

In some embodiments, the shape of the bent portions 111, 111 'may also be rectangular, square, or other polygonal shape, and the polygonal shape may be pentagonal, hexagonal, octagonal, etc., so long as the top ends of the two bent portions 111, 111' in each bent pair are ensured to be parallel to each other.

In some embodiments, adjacent pairs of bends are shaped differently. For example, the bent portions 111, 111 'in the first bending pair have a trapezoidal shape, the two bent portions 111, 111' in the second bending pair adjacent thereto have square shapes, the two bent portions 111, 111 'in the third bending pair adjacent thereto have rectangular shapes, and the two bent portions 111, 111' in the fourth bending pair adjacent thereto have polygonal shapes.

In some embodiments, the shape of the bends 111, 111' in each pair of bends may also be different from each other. For example, the shape of the bent portion 111 in one bending pair is trapezoidal, and the shape of the other bent portion 111' is square. The shape of the bending portion 111 in one bending pair is rectangular, and the shape of the other bending portion 111' is pentagonal. The tip ends of the bent portions 111, 111' in the pair of bent portions are parallel to each other, whether the same or different, may be selected by those skilled in the art according to the actual situation, and are not particularly limited herein.

In some embodiments, the tips of the bends 111, 111 'are curved with both sidewalls to facilitate manufacturing and increase the useful life of the reeds 112, 112'.

In some embodiments, as shown in fig. 1, the reed part 11 is exemplified as having a plurality of gaps 1121 in the stacking direction thereof, and the plurality of gaps 1121 are different in size. That is, the plurality of gaps 1121 are different in size in the protruding direction Y.

Specifically, as shown in fig. 1, the reed part 11 is exemplified. Gaps 1121 between the plurality of reeds 112 of the reed part 11 are located between both ends of the reed part 11 where the movable contact 12 and the stationary contact 13 are provided, the gaps 1121 are realized by forming the bent parts 111, and thus the size of the gaps 1121 can be determined according to the degree of bending of the bent parts 111, and thus the reed structure 100 of the embodiment of the present utility model can flexibly adjust the size of the gaps 1121 between the respective reeds 112. The degree of bending is understood to be the top wall-to-opening dimension of the bending portion 111 in the protruding direction Y thereof. By providing the gaps 1121 between the plurality of reeds 112, when each of the reeds 112 is deformed by the electric force, the deformation of each of the reeds 112 does not affect each other, and the stability of the electric force is ensured. In addition, the magnitude of the electromotive force received by the reeds 112 and 112' can be flexibly adjusted by changing the number of the bending pairs, the bending degree of the bending parts 111 and 111', or the first distance d1 between the bending parts 111 and 111' in each bending pair according to the magnitude of the short-circuit current.

In some embodiments, as shown in fig. 4-12, the reed structure 100 further comprises a bud 14, the bud 14 disposed in the gap 1121 and coupled to the at least one reed 112, 112'. The protrusion 14 is disposed in the gap 1121, when the springs 112, 112 'are deformed by the electromotive force, the protrusion 14 can be abutted against the deformed portion of the springs 112, 112', that is, the protrusion 14 can reduce the deformation amount of the springs 112, 112', when the springs 112, 112' have flexibility, the protrusion 14 can prevent the deformation amount of the springs 112, 112 'from being excessively large to cause the raising of the two end portions of the springs 112, 112', thereby ensuring the stability of the contact pressure between the movable contacts 12, 12 'and the stationary contacts 13', 13, and preventing the movable contacts 12, 12 'and the stationary contacts 13', 13 from being disconnected when receiving the repulsive force generated by the short-circuit current.

The protrusion 14 may be connected to the reed 112 (illustrated by the reed 112) by welding, screwing or bonding, or one side of the protrusion 14 may be connected to one reed 112, or two opposite sides of the protrusion 14 may be connected to two upper and lower adjacent reeds 112, or the protrusion 14 and the reed 112 may be integrally formed. The material of the protrusion 14 may be the same as or different from that of the reed 112. The material of the protrusion 14 may be conductive metal or insulating material. In addition, the protrusion 14 may have a greater rigidity, and may act as a greater top abutment for the deformed reed 112, preventing it from deforming. Of course, the protrusion 14 may have a certain flexibility, and when the reed 112 is deformed by the electric force, the protrusion 14 can play a role of buffering when being propped against another reed 112, so as to prolong the service life of the reed 112. The relationship between the protrusion 14 and the reed 112' is the same as above, and will not be described here again.

Regarding the above connection manner and properties of the protrusion 14, those skilled in the art can select according to practical situations, and are not particularly limited herein.

In some embodiments, as shown in fig. 5, 7, 10 and 12, the bud 14 is disposed in the gap 1121 of at least one reed portion 11, 11' between adjacent pairs of bends. That is, the protrusions 14 are provided in the gaps 1121 of the reeds 112, 112' of the straight portions between the adjacent pair of bends. Based on the above embodiment, still taking the reed 112 as an example, when the reed 112 has flexibility, the reed 112 is deformed by the electromotive force, and the deformation amount of the flat portion between the adjacent pair of bends is large, by providing the protrusion 14 in the gap 1121 between the reeds 112 of the flat portion, it is possible to reduce the deformation to a large extent, that is, to avoid the case where both ends of the reed portion 11 are lifted up due to the large deformation amount of the flat portion, thereby ensuring the stability of the contact pressure between the movable contact 12 and the stationary contact 13 'of the other reed portion 11'.

In some embodiments, as shown in fig. 6 and 7, the protrusion 14 has a plurality, and the plurality of protrusions 14 are provided in the gap 1121 of the reed 112, 112 'of the at least one reed part 11, 11'. Wherein, in one reed part 11, the protrusions 14 are aligned in the protruding direction Y, or the protrusions 14 are staggered in the protruding direction Y, or part of the protrusions 14 are aligned in the protruding direction Y, and the other part of the protrusions 14 are staggered in the protruding direction Y.

Wherein, the plurality of the protrusions 14 may be aligned in the protrusion direction Y, it may be understood that the central axis 141 of the protrusions 14 is aligned in the protrusion direction Y in the extending direction of the protrusions 14. When the reeds 112, 112' have high flexibility, as shown in fig. 9, a plurality of protrusions 14 may be provided in each of the gaps 1121 of the reeds 112, 112' and in the most deformable portion (e.g., a flat portion between two adjacent bending pairs), and the protrusions 14' are aligned in the protruding direction Y, so that the deformation of the portion can be minimized. When the reed parts 11, 11 'have small flexibility, a plurality of the protrusions 14 may be provided in one gap 1121, and the plurality of protrusions 14 may be provided in one gap 1121 in the horizontal direction X, that is, the plurality of protrusions 14 may be staggered in the protruding direction Y, so that the reeds 112, 112' may be uniformly deformed or may not be deformed when subjected to an electromotive force. Taking the reed 112 as an example, depending on the deformation of the reed 112, a plurality of protrusions 14 may be provided in a plurality of gaps 1121 of each reed 112, and a plurality of protrusions 14 may be provided in each gap 1121, and those skilled in the art may be provided depending on the actual situation, and are not particularly limited herein. Of course, in order to save costs and simplify manufacturing processes, in the case where the number of the bosses 14 and the setting position satisfy the deformation requirement of the reed 112, the smaller the number of the bosses 14, the better.

In some embodiments, as shown in fig. 8 and 9, the bud 14 is provided in the gap 1121 of the plurality of reeds 112, 112 'of the two reed parts 11, 11'.

Based on the above embodiment, the protrusion 14 may be provided in the gap 1121 of the plurality of reeds 112, 112' of the reed parts 11, 11' of the two movable springs 1, 1'. In some embodiments, the number of the protrusions 14 provided on the two reed parts 11, 11 'is the same or different, and the positions of the protrusions 14 of the two reed parts 11, 11' may be the same or different. In some embodiments, the number and positions of the protrusions 14 provided to the two reed parts 11, 11' are the same in order to simplify the manufacturing process. Those skilled in the art can set the configuration according to the actual situation, and are not particularly limited herein.

In some embodiments, the protrusions 14 provided to the two reed parts 11, 11' are aligned or staggered in the protruding direction Y. The central axes 141 of the protrusions 14 located at the two reed parts 11, 11 'may be aligned in the protruding direction Y or may be staggered, and those skilled in the art may be set according to the actual situation of the reeds 112, 112', which is not particularly limited herein.

In some embodiments, the bud 14 is disposed only in the gaps 1121 of the plurality of leaves 112, 112 'of one of the leaf portions 11, 11'. As shown in fig. 4 to 7, the bud 14 may be provided in only one reed portion 11. For example, the reed 112 of the reed part 11 has a large flexibility, and by providing the protrusion 14, it is possible to prevent a large deformation amount thereof.

In some embodiments, in the bulge direction Y, the dimension h1 of the bulge 14 is less than or equal to the dimension h2 of the gap 1121.

Specifically, as shown in fig. 10, in the protruding direction Y, the dimension h1 of the protrusion 14 is smaller than the dimension h2 of the gap 1121, and the reed 112 is exemplified as one side of the protrusion 14 is connected to the reed 112, and the other side has a gap with the adjacent reed 112. When the reed 112 receives an electromotive force, the protrusion 14 does not immediately abut against the other reed 112, but allows the reed 112 to have a certain deformation amount and then prevent the deformation, in which case, the reed 112 can be made to generate an overstroke, and the contact pressure between the movable contact 12 and the stationary contact 13 'of the other reed portion 11' can be increased. According to the deformation capacity of the reed 112, the dimension h1 of the protrusion 14 in the protrusion direction Y can be appropriately adjusted, and the size of the gap between the protrusion 14 and the adjacent reed 112 can be further adjusted, so as to flexibly adjust the deformation of the reed 112, and the contact pressure between the movable contact 12 and the stationary contact 13' reaches the most appropriate value. Regarding the specific dimension of the protrusion 14 in the protruding direction Y, it may be set according to the actual situation, such as the amount of deformation of the reed 112, the magnitude of the short-circuit current, and the like, and is not particularly limited herein.

Therefore, the size, number, position, etc. of the protrusions 14 can be changed according to the magnitude of the short-circuit current, so that the magnitude of the electromotive force received by the reeds 112, 112' can be flexibly adjusted, and the contact pressure between the movable contacts 12, 12' and the stationary contacts 13', 13 is prevented from being too large or too small.

In some embodiments, as shown in fig. 11, each moving spring 1 in reed structure 100 further comprises a first moving spring lead-out tab 151 and a second moving spring lead-out tab 152. One end of the first moving spring tab 151 is connected to the stationary contact 13, and the other end is connected to an external load. One end of the second moving spring lead-out piece 152 is connected to the stationary contact 13', and the other end is connected to an external load.

In summary, in the reed structure 100 according to the embodiment of the present utility model, the bent pair is disposed at the reed portions 11, 11', the first distance d1 between the two bent portions 111, 111' in each bent pair is smaller than the second distance d2 between the two ends of the two reed portions 11, 11', so that the distance between the two reed portions 11, 11' is reduced, and in the parallel circuit structure formed by the two moving reeds 1, 1', current is absorbed in the same direction to generate electric force, so that after the distance between the two reed portions 11, 11' is reduced, the electric force of the two reed portions 11, 11 'can be increased, and at the same time, the top ends of the bent portions 111, 111' in each bent pair are parallel, so that the horizontal component of the electric force is reduced, and at the same time, the effective length of the reed portions 11, 11 'can be increased, so that the electric force between the moving contacts 12, 12' and the static contacts 13', 13' can be effectively increased, and the contact force between the moving contacts 12, 12 'and the static contacts 13' can be effectively increased, so that the moving contacts are not easily disconnected, and the current is effectively resisted.

As shown in fig. 13 to 15, an embodiment of the present utility model further provides a magnetic latching relay including: the housing 200 is described in any of the embodiments above as at least one reed structure 100, magnetic structure 300, pusher card 400, and holder 500.

As shown in fig. 13 to 15, the housing 200 includes a base 21 and a cover 22. The reed structure 100 and the magnetic circuit structure 300 are both mounted on the base 21, the fixing frame 500 is mounted on the magnetic circuit structure 300, and the cover 22 is covered, so that the reed structure 100, the magnetic circuit structure 300, the push card 400 and the fixing frame 500 can be accommodated in the housing 200.

In some embodiments, the magnetic circuit structure 300 includes a coil assembly 31, a yoke assembly 32, a rotating permanent magnet 33, and an armature 34. The coil assembly 31 includes a coil bobbin 311 and a coil 312, and the coil 312 is wound around the coil bobbin 311. The yoke assembly 32 includes a first yoke 321 and a second yoke 322. The first yoke 321 and the second yoke 322 are located at both sides of the bobbin 311 in the axial direction, and the first yoke 321 and the second yoke 322 are fixedly disposed on the base 21. The rotary permanent magnet 33 is disposed on one side of the coil 312, and the permanent magnet 33 is disposed on a rotating shaft, and the permanent magnet can rotate around the rotating shaft 331. The number of armatures 34 is two, and the armatures are respectively arranged on two sides of the permanent magnet 33. One end of each armature 34 is connected to one end of the permanent magnet 33, and the other end is connected to the push card 400. One end of the push card 400 is connected to the compression spring 16 of the reed structure 100. The armature 34 may be integrally formed with the permanent magnet 33. The permanent magnets 33 may also be referred to as magnetic steels.

When a forward pulse voltage is applied to the coil 312, the yoke assembly 32, and the permanent magnet 33 form a magnetic field, and the permanent magnet 33 rotates around the rotation shaft 332 and is maintained at a first rotational position. The armature 34 rotates therewith and remains in the first rotational position with the permanent magnet 33. The armature 34 drives the push card 400 to move, and the push card 400 drives the compression spring 16 to move, so that the movable contacts 12 and 12' of the reed structure 100 are contacted with the stationary contacts 13' and 13'. When the forward pulse voltage is removed, the movable contacts 12, 12 'and the stationary contacts 13', 13 can be kept closed for a long period of time because the magnetism of the permanent magnet 33 is still present.

When a reverse pulse voltage is applied to the coil 312, the yoke assembly 32, and the permanent magnet 33 form a magnetic field opposite to the magnetic field formed by the forward pulse voltage described above, and the permanent magnet 33 rotates in an opposite direction around the rotation shaft 331 and is maintained at a second rotational position. The armature 34 rotates therewith and remains in the second rotational position with the permanent magnet 33. The armature 34 drives the push card 400 to move, and the push card 400 pushes the compression spring 16 to move, so that the movable contacts 12 and 12' of the reed structure 100 are disconnected from the fixed contacts 13' and 13'. When the reverse pulse voltage is removed, the movable contacts 12, 12 'and the stationary contacts 13', 13 can be kept open for a long period of time due to the magnetism of the permanent magnet 33 until the forward pulse voltage is again applied, so that the movable contacts 12, 12 'and the stationary contacts 13', 13 are closed.

In some embodiments, as shown in fig. 13 and 15, the magnetic latching relay may include two sets of reed structures 100. The two sets of reed structures 100 are arranged at two sides of the coil 312, and the compression springs 16 and 16' of each set of reed structures 100 are connected with the push card 400, so that the movable contacts 12 and 12' and the stationary contacts 13 and 13' of the two sets of reed structures 100 can be simultaneously closed and opened, and the states of the two sets of reed structures 100 are the same, so that the control is convenient. By providing the two sets of reed structures 100, the number of the lead-out ends of the magnetic latching relay can be increased, so that the magnetic latching relay can be connected with more loads, and the utilization rate of the magnetic latching relay is improved.

Of course, in some embodiments, the magnetic latching relay may further be provided with more spring structures 100, such as three sets, four sets, five sets, etc., and those skilled in the art may be provided according to actual needs and conditions, which are not limited herein.

Since the reed structure 100 adopts the reed structure 100 described in any of the above embodiments, the specific structure of the reed structure 100 may refer to the description of any of the above embodiments, and will not be described herein.

In summary, the magnetic latching relay according to the embodiment of the present utility model is provided with the reed structure 100 in any of the embodiments, the bent pairs are provided at the reed parts 11, 11', the first distance d1 of the two bent parts 111, 111' in each bent pair is smaller than the second distance d2 of the two ends of the two reed parts 11, 11', the distance between the two reed parts 11, 11' is reduced, and in the parallel circuit structure formed by the two moving springs 1, 1', the current attracts in the same direction to generate the electromotive force, so that after the distance between the two reed parts 11, 11' is reduced, the electromotive force of the two reed parts 11, 11 'can be increased, and meanwhile, in each bent pair, the top ends of the bent parts 111, 111' are parallel, the horizontal component of the electromotive force is reduced, and simultaneously, the effective length of the reed parts 11, 11 'can be increased, the electromotive force of the two reed parts 11, 11' is further increased, and thus the pressure between the moving contacts 12, 12 'and the static contacts 13, 13' can be effectively increased, and the short circuit is effectively prevented.

In embodiments of the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or units referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model and is not intended to limit the embodiment of the present utility model, and various modifications and variations can be made to the embodiment of the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims (17)

1. A reed structure comprising two parallel moving springs, each of said moving springs comprising:

a reed part;

the movable contact and the fixed contact are arranged at two opposite ends of the reed part;

the movable contact and the fixed contact of one movable spring respectively correspond to the fixed contact and the movable contact of the other movable spring, so that when the movable contact and the fixed contact are closed, the two movable springs form a parallel circuit structure;

each reed part is provided with at least one bending part, and the bending parts of the two reed parts are arranged in a one-to-one correspondence manner so as to form bending pairs; in each bending pair, the top ends of the two bending parts are parallel, the two bending parts protrude along the same protruding direction, and the first interval between the two bending parts is smaller than the second interval between the two ends of the two reed parts.

2. The reed structure according to claim 1, wherein at least part of the bent portion located upstream is accommodated in a space formed by the convex portion of the bent portion located downstream in the convex direction.

3. The reed structure according to claim 1 or 2, wherein the number of the pair of bends is plural, and a third pitch is provided between two reed parts located between adjacent pairs of bends, the third pitch being larger than the first pitch.

4. A reed structure as in claim 3, wherein said projection directions comprise first and second opposite directions, and wherein, in a plurality of said pairs of bends, a portion of said bends project toward said first direction and another portion of said bends project toward said second direction.

5. The reed structure of claim 2, wherein in each of the pair of bends, a size of an opening of the bend located downstream is larger than a size of a tip of the bend located upstream such that the tip of the bend located upstream is received in the opening of the bend located downstream.

6. The reed structure according to claim 1 or 2, wherein each of the bent portions has any one of a trapezoid, a rectangle, a square, a pentagon, a hexagon, and an octagon.

7. The reed structure of claim 1, wherein each of the reed parts comprises a plurality of stacked reeds with a gap between adjacent ones of the reeds.

8. The reed structure of claim 7, wherein the reed portion has a plurality of the gaps in the direction in which the reeds are stacked, and wherein the plurality of the gaps are different in size.

9. The reed structure of claim 7, further comprising a protrusion disposed in the gap and coupled to at least one of the reeds.

10. The reed structure of claim 9, wherein the protrusions are disposed in a gap of at least one of the reed portions between adjacent pairs of the bends.

11. The reed structure of claim 10, wherein the plurality of protrusions are provided in the gaps of the plurality of reeds of at least one of the reed parts;

wherein, in one of the reed parts:

the protrusions are aligned in the protruding direction; or alternatively, the first and second heat exchangers may be,

the convex buds are staggered in the convex direction; or alternatively, the first and second heat exchangers may be,

portions of the lobes are aligned in the direction of the protrusion.

12. The reed structure according to claim 10 or 11, wherein the protrusion bud is provided in the gaps of a plurality of the reeds of two of the reed parts.

13. The reed structure according to claim 12, wherein the number of the protrusions provided to the two reed parts is the same or different.

14. The reed structure according to claim 13, wherein the protrusions provided to both the reed parts are aligned or staggered in the protruding direction.

15. The reed structure according to claim 10 or 11, wherein the protrusion bud is provided only in the gaps of a plurality of the reeds of one of the reed parts.

16. The reed structure of claim 9, wherein in the protruding direction, the dimension of the protrusion is less than or equal to the dimension of the gap.

17. A magnetic latching relay comprising the reed structure of any one of claims 1 to 16.