JP6882577B2 - Magnetic latching relay - Google Patents

Description

The present application claims priority based on the Chinese patent application with application number 20191033353.7 and the Chinese patent application with application number 2019103332524, filed on April 24, 2019, and the above two The entire contents of the Chinese patent application are incorporated herein by reference.

The present invention relates to the technical field of manufacturing a magnetic latching relay, and particularly relates to a magnetic latching relay having a high current capacity.

Magnetic latching relays are a new type of relay that has been developed in recent years and, like other electromagnetic relays, have the ability to automatically turn on and off electrical circuits.

In the prior art, magnetic latching relays typically include a plastic case, multiple conductive terminals, a magnetic circuit system, a contact system and a push mechanism. In the structure of the magnetic latching relay, when a plurality of dynamic springs are installed, it is inevitable that the conductive terminals are arranged so as to intersect the push card in the push mechanism. When keeping the size of the case of the magnetic latching relay constant, it is necessary to reduce the size of the conductive terminals arranged so as to intersect the push card in the width direction, so that the current capacity of the conductive terminals is reduced. .. Currently, the overall volume of the relay is increased because the size of the case in the magnetic latching relay can only be increased so as not to reduce the size of the conductive terminals in the width direction, which occupies a larger mounting position and is different. It is disadvantageous to combine with electrical equipment.

Further, in the structure of the conventional magnetic latching relay, the conductive terminal and the insulating case are positioned only by fitting a simple protrusion and a concave groove. Since the dynamic spring and the static spring are positioned by the conductive terminal and the insulating case is made of plastic, the portion extending to the outside of the insulating case of the conductive terminal is long and heavy, or the insulating case of the conductive terminal. When a part extending to the outside is pressed by a screw for connecting an external electric device and stress is generated, the fitting part between the plastic insulating case and the conductive terminal is easily deformed and is conductive. It causes the terminals to shift and shift. If the conductive terminals are displaced and displaced, the dynamic or static springs will be displaced accordingly, resulting in inaccurate alignment of the dynamic and static contacts, resulting in poor contact, which will result in relay performance. It will affect you. In the prior art, the problem of displacement and displacement of the conductive terminals has not received sufficient attention, so that the problem of satisfactorily positioning the conductive terminals cannot be solved.

The present invention provides a magnetic latching relay with a high current capacity that can improve the current capacity of the magnetic latching relay by increasing the width dimension of the conductive terminal that intersects the push card when keeping the size of the case constant. To do.

In order to achieve the above object, the technical proposal of the present invention provides a magnetic latching relay having a high current capacity, and the magnetic latching relay includes a case, a plurality of conductive terminals, a push card and a plurality of dynamic springs. , One end of each dynamic spring is fixedly connected to one end of one conductive terminal, the conductive terminal is attached to the case and one end thereof extends to the outside of the case, and the push card and the plurality of dynamic springs , Both located inside the case, the push card includes a base and a plurality of dynamic spring connections, the base being connected to an armature assembly, and each dynamic spring connection at the other end of one dynamic spring. It is connected, and the base and the dynamic spring connection portion are fixedly connected by a push-pull arm or fixedly connected by a push-pull arm, and the adjacent dynamic spring connection portion is fixedly connected by a push-pull arm. The dynamic spring connection portion has a cross section that overlaps the symmetrical plane of the dynamic spring after being connected to the dynamic spring, and the cross sections of each dynamic spring connection portion are located on the same plane and are located in the dynamic spring connection portion. With the cross section as a horizontal plane, at least two push-pull arms are installed so as to be offset vertically with respect to the cross section. It provides space for increasing the width direction of the terminal, which improves the current capacity of the conductive terminal.

According to an exemplary embodiment of the present invention, both sides of the base are fixedly connected to the dynamic spring connection by push-pull arms, and the push-pull arms on both sides of the base are vertically displaced with respect to the cross section. A rectangular through hole is installed in the middle portion of the base which is installed and parallel to each other and is connected to the armature assembly. Thereby, the two push-pull arms both simultaneously improve the current capacity of the two conductive terminals by providing the conductive terminals with a space for increasing the size of the conductive terminals in the width direction. Can be done.

According to an exemplary embodiment of the present invention, diagonal support rods are installed between the base and the push-pull arms on both sides thereof. Thereby, the push-pull strength of the push-pull arm can be further improved.

According to an exemplary embodiment of the invention, the push point to which the armature assembly is connected to the base is also located in the cross section. As a result, a more rational pushing force is received and the structure becomes more compact.

According to an exemplary embodiment of the present invention, each of the dynamic spring connection portions is located between the cut surface of the upper end of the base portion and the cut surface of the lower end, and the cut surface and the lower end of the upper end of the base portion. The cut surface of is parallel to the cross section. Such a structure can prevent the dynamic spring from being displaced when the magnetic latching relay is pushed and pulled by the dynamic spring connection portion to displace the dynamic spring, and the reliability of operation can be further improved.

According to an exemplary embodiment of the present invention, the dynamic spring connecting portion comprises two vertical rods installed at intervals and one horizontal rod connecting an intermediate portion of the inner surface of the two vertical rods. Including, the horizontal rod has a horizontally symmetric cross section, the horizontally symmetric cross section of the horizontal rod overlaps the plane of symmetry of the moving spring, and the upper surface of the horizontal rod and the inner surface of the two vertical rods are of the moving spring. An upper engaging groove is formed, the lower surface of the horizontal rod and the inner surfaces of the two vertical rods form a lower engaging groove of the moving spring, and the moving spring connecting portion is formed into a push-pull arm by the outer surface of the vertical rod. Fixedly connected, each moving spring is provided with two engaging portions, and one end of each of the two engaging portions engages with the upper engaging groove or the lower engaging groove of the moving spring connecting portion. Moreover, the two engaging portions do not come into contact with the horizontal rod, and one dynamic contact is fixedly connected to each of the two engaging portions. As a result, shavings are not generated when the moving spring is pushed and pulled by the moving spring connecting portion. It is possible to prevent the influence of shavings on the contacts and the magnetic circuit and improve the performance of the magnetic latching relay.

According to an exemplary embodiment of the invention, the edges of the two engaging portions in each dynamic spring are bent towards the same side. This makes it possible to further prevent shavings.

According to an exemplary embodiment of the present invention, each dynamic spring further comprises one retaining spring piece, two connecting ends are provided on one side of the pressing spring piece, and the like. One positioning engagement groove is installed on the side, and the two connection ends on one side of the holding spring piece are fixedly connected to the two engaging parts of the dynamic spring, respectively, and the positioning of the other side of the holding spring piece By engaging the engaging groove with the lateral rod, the two engaging portions of the dynamic spring 7 do not come into contact with the lateral rod, and one side of the pressing spring piece is one vertical portion of the dynamic spring connecting portion. It is pressed against the inner surface of the rod. As a result, the positioning accuracy between the moving spring connection portion and the moving spring can be improved, and the performance of pushing and pulling the moving spring by the moving spring connecting portion can be improved.

According to an exemplary embodiment of the present invention, at least one conductive terminal is provided with a first positioning portion and a second positioning portion, and the case is fitted to the first positioning portion. A first fitting portion to be fitted and a second fitting portion to be fitted to the second positioning portion are installed, and the first positioning portion is closely fitted to the first fitting portion. The second positioning portion is formed, and the second positioning portion forms a gap fitting with the second fitting portion, and after the first fitting portion is deformed to a predetermined degree, the second positioning portion is formed. It is fitted into the second fitting portion to further position the conductive terminal. Such a positioning structure of the conductive terminal and the case facilitates the assembly and positioning of the conductive terminal, improves the positioning accuracy of the conductive terminal, and secures the performance of the magnetic latching relay.

According to an exemplary embodiment of the present invention, the length of the conductive terminal on the outside of the case is longer than the length of the conductive terminal on the inside of the case.

According to an exemplary embodiment of the present invention, the first positioning portion is a first ridge installed on the side surface of the conductive terminal, and the second positioning portion is the conductive portion. A second ridge installed on the side surface of the terminal, the first fitting portion is a first elongated concave groove installed in the case, and the second fitting portion is It is a second elongated concave groove installed in the case, and the first positioning portion and the second positioning portion are parallel to each other, and the first fitting portion and the second positioning portion are parallel to each other. The fitting portions are parallel to each other, and when the conductive terminal is attached to the case, the first positioning portion engages with the first fitting portion, and the second positioning portion is Engage with the second fitting portion.

According to an exemplary embodiment of the present invention, the first positioning portion and the second positioning portion are located on the same side surface of the conductive terminal, and the side surface of the conductive terminal is perpendicular to the horizontal plane. In some cases, the first positioning portion and the second positioning portion are installed so as to be vertically offset from each other.

According to an exemplary embodiment of the present invention, the first positioning portion is a first ridge installed on the side surface of the conductive terminal, and the second positioning portion is the conductive portion. A second ridge installed on the side surface of the terminal, the first fitting portion is a long concave groove installed in the case, and the second fitting portion is installed in the case. The second positioning portion is inclined with respect to the first positioning portion, and when the conductive terminal is attached to the case, the first positioning portion is the first positioning portion. After engaging with the fitting portion 1 and deforming the first fitting portion to a predetermined degree, the second positioning portion leans against the second fitting portion.

In the present invention, each moving spring connecting portion of the push card has a cross section that overlaps the plane of symmetry of the moving spring after being connected to the moving spring, and the cross section of each moving spring connecting portion is located in the same plane. With the cross section of the dynamic spring connecting portion as a horizontal plane, at least two push-pull arms are installed so as to be offset vertically with respect to the cross section, whereby the push-pull arm is installed so as to be offset. At least two conductive terminals intersecting with can be provided with a space for increasing the size of the conductive terminals in the width direction, whereby the current capacity of the conductive terminals can be improved. Therefore, when the size of the case is kept constant, the width dimension of the conductive terminal intersecting with the push card can be increased, and when the width dimension of the conductive terminal is increased, the current capacity is increased, thereby increasing the current capacity. Improves the current capacity of the entire magnetic latching relay.

Another technical problem to be solved by the present invention is that positioning can facilitate the assembly and positioning of conductive terminals, improve the positioning accuracy of conductive terminals, and ensure the performance of magnetic latching relays. It is to provide a magnetic latching relay with good conductive terminals.

To achieve the above object, the technical proposal of the present invention provides a magnetic latching relay with conductive terminals that are well positioned, the magnetic latching relay including an insulating case and a plurality of conductive terminals. Each conductive terminal is attached to an insulating case and one end thereof extends to the outside of the insulating case, and at least one conductive terminal is provided with a first positioning portion and a second positioning portion, and the insulating case is provided. A first fitting portion to be fitted to the first positioning portion and a second fitting portion to be fitted to the second positioning portion are installed in the first positioning portion. The first fitting portion and the first fitting portion form a close contact fitting, the second positioning portion forms a gap fitting with the second fitting portion, and the first fitting portion is brought to a predetermined degree. After being deformed, the second positioning portion is fitted into the second fitting portion to further position the conductive terminal.

According to an exemplary embodiment of the present invention, as a suitable structure, the length of the conductive terminal on which the first positioning portion and the second positioning portion are installed outside the insulating case is the insulating case. Longer than the length of the conductive terminal inside.

According to an exemplary embodiment of the present invention, the other end of the conductive terminal on which the first positioning portion and the second positioning portion are installed inside the insulating case is a moving spring piece of a magnetic latching relay. It is fixedly connected to one end of the magnetic latching relay, or fixedly connected to the static spring piece of the magnetic latching relay, or forms a structure integrated with the static spring piece of the magnetic latching relay.

According to an exemplary embodiment of the present invention, the first positioning portion is a first ridge installed on the side surface of the conductive terminal, and the second positioning portion is the conductive portion. A second ridge installed on the side surface of the terminal, the first fitting portion is a first elongated concave groove installed in the insulating case, and the second fitting portion is , A second elongated concave groove installed in the insulating case, the first positioning portion and the second positioning portion are parallel to each other, and the first fitting portion and the first fitting portion and the first positioning portion are parallel to each other. The fitting portions of 2 are parallel to each other, and when the conductive terminal is attached to the insulating case, the first positioning portion engages with the first fitting portion and the second positioning portion is engaged. The portion engages with the second fitting portion.

According to an exemplary embodiment of the present invention, the first positioning portion and the second positioning portion are located on the same side surface of the conductive terminal, and the side surface of the conductive terminal is perpendicular to the horizontal plane. In some cases, the first positioning portion and the second positioning portion are installed so as to be vertically offset from each other. In this way, at the time of mounting, the first positioning portion is first engaged with the first fitting portion, and then the second positioning portion is engaged with the second fitting portion. At the same time, the first positioning portion is subsequently engaged with the first fitting portion. This facilitates mounting and positioning.

According to an exemplary embodiment of the present invention, the length of the first positioning portion is longer than the length of the second positioning portion, and the width of the second positioning portion is the width of the first positioning portion. It is larger than the width of the positioning part. As a result, the mutual positioning ability between the first positioning portion and the first fitting portion can be improved, and the further positioning ability between the second positioning portion and the second fitting portion can be improved. ..

According to an exemplary embodiment of the present invention, a guide slope is installed at one end of the first positioning portion, and a guide slope is installed at one end of the second positioning portion. This facilitates the assembly of the conductive terminals.

According to an exemplary embodiment of the present invention, the first positioning portion is a first ridge installed on the side surface of the conductive terminal, and the second positioning portion is the conductive portion. A second ridge installed on the side surface of the terminal, the first fitting portion is a long concave groove installed in the insulating case, and the second fitting portion is the insulating case. The second positioning portion is inclined with respect to the first positioning portion, and when the conductive terminal is attached to the insulating case, the first positioning portion is After engaging with the first fitting portion and deforming the first fitting portion to a predetermined degree, the second positioning portion leans against the second fitting portion.

According to an exemplary embodiment of the present invention, the first positioning portion and the second positioning portion are located on the same side surface of the conductive terminal, and the first positioning portion has a guide slope. Is installed.

According to an exemplary embodiment of the present invention, the first positioning portion and the second positioning portion are located on different side surfaces of the conductive terminal, and the first positioning portion has a guide slope. Is installed.

In the present invention, the first positioning portion of the conductive terminal forms a close fit with the first fitting portion of the insulating case, and the second positioning portion of the conductive terminal is the second positioning portion of the insulating case. By forming a gap fitting with the fitting portion of the above, the assembly and positioning of the conductive terminal in the insulating case is facilitated. When the part extending to the outside of the insulating case of the conductive terminal is long and heavy, or the part extending to the outside of the insulating case of the conductive terminal is pressed by a screw for connecting an external electric device and stressed. When the first fitting portion is significantly deformed, the second positioning portion is fitted to the second fitting portion to further position the conductive terminal, whereby the conductive terminal is further positioned. Ensure that the conductive terminals do not shift significantly and improve the positioning accuracy of the conductive terminals. By improving the positioning accuracy of the conductive terminals, the positioning accuracy of the dynamic contact and the static contact can be improved, the contact performance can be guaranteed, and the performance of the magnetic latching relay can be ensured.

FIG. 1 is a perspective view hiding a part of a part of the first embodiment of the present invention. FIG. 2 is a front view of the push card according to the first embodiment of the present invention. FIG. 3 is a front view of the dynamic spring of the first embodiment of the present invention. FIG. 4 is a perspective view of the dynamic spring of the first embodiment of the present invention. FIG. 5 is a perspective view showing the connection between the push card and the two moving springs and the connection between the two moving springs and the two conductive terminals according to the first embodiment of the present invention. FIG. 6 is an enlarged view of a portion A in FIG. FIG. 7 is a top view in which some parts of the first embodiment of the present invention are hidden. FIG. 8 is an enlarged view of a portion B of FIG. 7. FIG. 9 is an enlarged view of a portion C in FIG. 7. FIG. 10 is a perspective view of a conductive terminal on which the first positioning portion and the second positioning portion of the first embodiment of the present invention are installed. FIG. 11 is a perspective view of another conductive terminal in which the first positioning portion and the second positioning portion of the first embodiment of the present invention are installed. FIG. 12 is a perspective view of the case of the first embodiment of the present invention. FIG. 13 is a front view of the push card according to the second embodiment of the present invention.

Magnetic latching relays typically include a plastic case, multiple conductive terminals, a magnetic circuit system, a contact system and a push mechanism. The plurality of conductive terminals, magnetic circuit systems, contact systems and push mechanisms are all mounted in a plastic case. The magnetic circuit system usually includes a yoke, a coil and an armature assembly, the contact system includes a dynamic spring and a static spring, the dynamic spring is arranged with a dynamic contact, and the static spring has a static contact. Arranged, the push mechanism includes a push card, the armature assembly is connected to the push card, the push card is connected to the dynamic spring part, and one end of the conductive terminal inside the case is to the dynamic spring and static spring. When fixedly connected and a positive pulse voltage is applied to the coil of the relay, the magnetic circuit system operates, the armature assembly moves the push card, the push card displaces the dynamic spring, and the dynamic contact is static. Upon contact with the target contact, the relay is turned on. If a negative pulse voltage is applied to the relay coil, the magnetic circuit system will operate again, the armature assembly will return the push card, the push card will return the spring, and the dynamic contacts will come from the static contacts. It is detached, the contacts are turned off, and the relay is turned off.

Hereinafter, an embodiment of the present invention will be described in more detail by combining drawings and specific embodiments.

In one embodiment, as shown in FIGS. 1 to 12, the magnetic latching relay having a high current capacity includes a case 1, a conductive terminal 2, a conductive terminal 3, a conductive terminal 4, a conductive terminal 5, and a push card 6. And two moving springs 7, one end of one moving spring 7 is fixedly connected to one end of the conductive terminal 2, and one end of the other moving spring 7 is fixedly connected to one end of the conductive terminal 3. , The conductive terminal 2, the conductive terminal 3, the conductive terminal 4 and the conductive terminal 5 are all attached to the case 1 and one end thereof extends to the outside of the case 1, and the push card 6 and the two moving springs. 7 is located inside the case 1, and as shown in FIG. 2, the push card 6 includes a base 61 and two dynamic spring connections 62, the base 61 being connected to an armature assembly and a base. In the middle portion of 61, a rectangular through hole 611 connected to the armature assembly is installed, each dynamic spring connecting portion 62 is connected to the other end of one dynamic spring 7, and both sides of the base portion 61 are respectively. It is fixedly connected to the moving spring connecting portion 62 by the push-pull arm 63, and each moving spring connecting portion 62 has a cross section E that overlaps with the symmetrical surface D of the moving spring 7 after being connected to the moving spring 7, and each moving spring. The cross section E of the connecting portion 62 is located on the same plane, and the push-pull arms 63 on both sides of the base portion 61 are vertically and vertically relative to the cross section E, with the cross section E of the dynamic spring connecting portion 62 as a horizontal plane. By installing the two push-pull arms 63 so as to be offset and parallel to each other, the conductive terminal 3 and the conductive terminal 5 intersect with the two push-pull arms 63. It provides a space for increasing the size of the conductive terminal 5 in the width direction, thereby improving the current capacity of the conductive terminal 3 and the conductive terminal 5.

The case 1 and the push card 6 are made of a plastic material, and the conductive terminal 2, the conductive terminal 3, the conductive terminal 4, the conductive terminal 5, and the two dynamic springs 7 are made of a conductive material such as copper. Will be done.

An oblique support rod 64 is installed between the base 61 and the push-pull arms 63 on both sides thereof. Thereby, the push-pull strength of the push-pull arm 63 can be improved better.

As further shown in FIG. 2, preferably, push points a and b to which the armature assembly of the magnetic latching relay is connected to the base are also located in the cross section E. As a result, a more rational pushing force is received and the structure becomes more compact.

As shown in FIG. 2, preferably, each of the dynamic spring connecting portions 62 is located between the cut surface F at the upper end of the base portion 61 and the cut surface G at the lower end, and the cut surface at the upper end of the base portion 61. F and the cut surface G at the lower end are parallel to the cross section E. Thereby, it is possible to better prevent the displacement from occurring when the moving spring 7 moves.

The dynamic spring connecting portion 62 includes two vertical rods 621 installed at intervals and one horizontal rod 622 connecting the intermediate portions of the inner surfaces of the two vertical rods 621, and the horizontal rod 622 includes a horizontal rod 622. It has a horizontally symmetric cross section, the horizontally symmetric cross section of the horizontal rod 622 overlaps the symmetrical surface D of the moving spring 7, and the upper surface of the horizontal rod 622 and the inner surface of the two vertical rods 621 are the moving spring 7. The upper engaging groove 62a is formed, the lower surface of the horizontal rod 622 and the inner side surfaces of the two vertical rods 621 form the lower engaging groove 62b of the moving spring 7, and the moving spring connecting portion 62 is the vertical rod 621. It is fixedly connected to the push-pull arm 63 by the outer side surface.

As can be seen from FIG. 3, the symmetrical plane of the moving spring 7 is the position indicated by the broken line D, and as can be seen from FIG. 2, the horizontally symmetrical cross section of the horizontal rod 622 is the position indicated by the broken line E. After the moving spring connecting portion 62 is connected to the moving spring 7, the plane shown by the broken line D overlaps with the plane shown by the broken line E.

Two engaging portions 71 are installed in each moving spring 7, and one end of each of the two engaging portions 71 engages with the upper engaging groove 62a or the lower engaging groove 62b of the moving spring connecting portion 62. However, the two engaging portions 71 do not come into contact with the lateral rod 622, and one dynamic contact 711 is fixedly connected to each of the two engaging portions 71. The edges of the two engaging portions 71 in each dynamic spring 7 are bent toward the same side.

As shown in FIGS. 4 to 6, each moving spring 7 further includes one pressing spring piece 72, two connecting ends 721 are installed on one side of the pressing spring piece 72, and two connecting ends 721 are installed on the other side. A positioning engagement groove 722 is installed, and the two connection ends 721 on one side of the holding spring piece 72 are fixedly connected to the two engaging portions 71 of the moving spring 7, respectively, and the positioning staff on the other side of the holding spring piece 72 is provided. By engaging the joint groove 722 with the lateral rod 622, the two engaging portions 71 in the moving spring 7 do not come into contact with the lateral rod 622, and one side of the pressing spring piece 72 is the moving spring connecting portion. It is pressed against the inner surface of one vertical rod 621 of 62.

As further shown in FIGS. 7, 8, 10, and 12, the conductive terminal 2 is provided with the first positioning portion 21 and the second positioning portion 22, and the case 1 is provided with the first positioning portion 21. A first fitting portion 21a to be fitted to the positioning portion 21 and a second fitting portion 22a to be fitted to the second positioning portion 22 are installed, and the first positioning portion 21 is the first. A close fit is formed with the fitting portion 21a of 1, the second positioning portion 22 forms a gap fitting with the second fitting portion 22a, and the first fitting portion 21a is set to a predetermined degree. After being deformed to, the second positioning portion 22 is fitted into the second fitting portion 22a to further position the conductive terminal.

The first positioning portion 21 is a first ridge installed on the side surface of the conductive terminal 2, and the second positioning portion 22 is a second ridge installed on the side surface of the conductive terminal 2. The first fitting portion 21a is a first elongated concave groove installed in the case 1, and the second fitting portion 22a is installed in the case 1. It is a second elongated concave groove, and the first positioning portion 21 and the second positioning portion 22 are parallel to each other, and the first fitting portion 21a and the second fitting portion 21a are fitted to each other. The portions 22a are parallel to each other, and when the conductive terminal 2 is attached to the case 1, the first positioning portion 21 engages with the first fitting portion 21a and the second positioning is performed. The portion 22 engages with the second fitting portion 22a.

The first positioning portion 21 and the second positioning portion 22 are located on the same side surface of the conductive terminal 2, and when the side surface of the conductive terminal 2 is perpendicular to the horizontal plane, the first positioning portion The 21 and the second positioning portion 22 are installed so as to be vertically displaced from each other. The length of the conductive terminal 2 on the outside of the case 1 is longer than the length of the conductive terminal 2 on the inside of the case 1.

As further shown in FIGS. 7, 9, 11 and 12, the conductive terminal 3 is provided with the first positioning portion 31 and the second positioning portion 32, and the case 1 is provided with the first positioning portion 31. A first fitting portion 31a to be fitted to the positioning portion 31 and a second fitting portion 32a to be fitted to the second positioning portion 32 are installed, and the first positioning portion 31 is the first. A close fit is formed with the fitting portion 31a of 1, the second positioning portion 32 forms a gap fitting with the second fitting portion 32a, and the first fitting portion 31a is set to a predetermined degree. After being deformed to, the second positioning portion 32 is fitted into the second fitting portion 32a to further position the conductive terminal.

The first positioning portion 31 is a first ridge installed on the side surface of the conductive terminal 3, and the second positioning portion 32 is a second position installed on the side surface of the conductive terminal 3. The first fitting portion 31a is a long concave groove installed in the case 1, and the second fitting portion 32a is a support portion installed in the case 1. When the second positioning portion 32 is inclined with respect to the first positioning portion 31 and the conductive terminal 3 is attached to the case 1, the first positioning portion 31 is the first positioning portion 31. After engaging with the fitting portion 31a of 1 and deforming the first fitting portion 31a to a predetermined degree, the second positioning portion 32 leans against the second fitting portion 32a. The length of the conductive terminal 3 on the outside of the case 1 is longer than the length of the conductive terminal 3 on the inside of the case 1.

The positioning structure of the conductive terminal 2, the conductive terminal 3, and the case 1 described above facilitates the assembly and positioning of the conductive terminal 2 and the conductive terminal 3, and the case 1 of the conductive terminal 2 and the conductive terminal 3. The conductive terminal 2 and the conductive terminal 3 are prevented from being displaced and displaced due to the fact that the portion extending to the outside is very long and heavy, or that the conductive terminal 2 or the conductive terminal 3 is displaced and displaced due to the pressure generated by the external connecting member. The positioning accuracy of the terminal 2 and the conductive terminal 3 can be improved, the contact performance between the dynamic contact 711 and the static contact can be ensured, and the performance of the magnetic latching relay can be ensured.

In another embodiment, as shown in FIG. 13, only the structure of the push card different from that of the first embodiment will be described, the push card 6 includes the base 61, and both sides of the base 61 are respectively provided by push-pull arms 63. It is fixedly connected to the moving spring connecting portion 62, and the two adjacent moving spring connecting portions 62 are also fixedly connected by the push-pull arm 63. Such a push-pull arm 6 can move three dynamic springs.

As described above, in the present invention, each dynamic spring connection portion in the push card has a cross section that overlaps with the plane of symmetry of the dynamic spring after being connected to the dynamic spring, and the cross section in each dynamic spring connection portion is eventually Also located on the same plane, with the cross section of the dynamic spring connecting portion as a horizontal plane, at least two push-pull arms are installed so as to be vertically offset from the cross section, whereby the push-pull arms are offset and installed. Thereby, at least two conductive terminals intersecting the push-pull arm can be provided with a space for increasing the size of the conductive terminal in the width direction, thereby improving the current capacity of the conductive terminal. Can be made to. Therefore, when the size of the case is kept constant, the width dimension of the conductive terminal intersecting with the push card can be increased, and the larger the width dimension of the conductive terminal, the higher the current capacity, thereby increasing the current capacity. The current capacity of the entire magnetic latching relay can be improved.

Conventional magnetic latching relays typically include a plastic insulating case, multiple conductive terminals, a magnetic circuit system, a contact system and a push mechanism. The plurality of conductive terminals, magnetic circuit systems, contact systems and push mechanisms are all mounted in a plastic insulating case. The magnetic circuit system usually includes a yoke, a coil and an armature assembly, the contact system includes a dynamic spring and a static spring, the dynamic spring is arranged with a dynamic contact, and the static spring has a static contact. Arranged, the push mechanism includes a push card, the armature assembly is connected to the push card, the push card is connected to the dynamic spring part, and one end of the conductive terminal inside the insulating case is a dynamic spring or a static spring. When fixedly connected to and a positive pulse voltage is applied to the coil of the relay, the magnetic circuit system operates, the armature assembly moves the push card, the push card displaces the dynamic spring and makes the dynamic contact. Upon contact with the static contact, the relay is turned on. If a negative pulse voltage is applied to the relay coil, the magnetic circuit system will operate again, the armature assembly will return the push card, the push card will return the spring, and the dynamic contacts will come from the static contacts. It is detached, the contacts are turned off, and the relay is turned off.

Hereinafter, other embodiments of the present invention will be described in more detail by combining drawings and specific embodiments.

The first embodiment is a magnetic latching relay provided with a conductive terminal having good positioning, as shown in FIGS. 7 to 8, 10 and 12, wherein the magnetic latching relay is an insulating case 1, The conductive terminal 2, the conductive terminal 3, the conductive terminal 4, and the conductive terminal 5 are included, and the conductive terminal 2, the conductive terminal 3, the conductive terminal 4, and the conductive terminal 5 are all attached to the insulating case 1. And one end thereof extends to the outside of the insulating case 1. The conductive terminal 2, the conductive terminal 3, the conductive terminal 4, and the conductive terminal 5 may be made of a conductive material such as copper, and the insulating case 1 is made of plastic.

The conductive terminal 2 is provided with a first positioning portion 21 and a second positioning portion 22, and the insulating case 1 is fitted with a first positioning portion 21 fitted to the first positioning portion 21 of the conductive terminal 2. A second fitting portion 22a to be fitted to the fitting portion 21a and the second positioning portion 22 of the conductive terminal 2 is installed.

The first positioning portion 21 forms a close contact fitting with the first fitting portion 21a, and the second positioning portion 22 forms a gap fitting with the second fitting portion 22a. After the first fitting portion 21a is deformed to a predetermined degree, the second positioning portion 22 is fitted into the second fitting portion 22a to further position the conductive terminal 2.

The length of the conductive terminal 2 on the outside of the insulating case 1 is longer than the length of the conductive terminal 2 on the inside of the insulating case 1.

The other end of the conductive terminal 2 inside the insulating case 1 is fixedly connected to one end of the dynamic spring piece 7 of the magnetic latching relay. The conductive terminal 2 on which the first positioning portion 21 and the second positioning portion 22 are installed may be fixedly connected to the static spring piece, or may be fixedly connected to the static spring piece, depending on specific structural requirements. You may form a structure integrated with.

The first positioning portion 21 is a first ridge installed on the side surface of the conductive terminal 2, and the second positioning portion 22 is a second ridge installed on the side surface of the conductive terminal 2. The first fitting portion 21a is a first elongated concave groove installed in the insulating case, and the second fitting portion 22a is installed in the insulating case. It is a second elongated concave groove, and the first positioning portion 21 and the second positioning portion 22 are parallel to each other, and the first fitting portion 21a and the second fitting portion 21a are fitted to each other. The portions 22a are parallel to each other, and when the conductive terminal 2 is attached to the insulating case, the first positioning portion 21 engages with the first fitting portion 21a and the second positioning is performed. The portion 22 engages with the second fitting portion 22a.

The first positioning portion 21 and the second positioning portion 22 are located on the same side surface of the conductive terminal 2, and when the side surface of the conductive terminal 2 is perpendicular to the horizontal plane, the first positioning portion The 21 and the second positioning portion 22 are installed so as to be vertically displaced from each other. At the time of mounting, first, the first positioning portion 21 is engaged with the first fitting portion 21a, and then the second positioning portion 22 is engaged with the second fitting portion 22a at the same time. , The first positioning portion 21 is subsequently engaged with the first fitting portion 21a. This facilitates the attachment and positioning of the conductive terminal 2.

Preferably, the length of the first positioning unit 21 is longer than the length of the second positioning unit 22, and the width of the second positioning unit 22 is larger than the width of the first positioning unit 21. large.
Preferably, a guide slope 211 is installed at one end of the first positioning portion 21, and a guide slope 221 is installed at one end of the second positioning portion 22.

The second embodiment is, as shown in FIGS. 1, 9, 11 and 12, a magnetic latching relay provided with a conductive terminal having good positioning, wherein the magnetic latching relay is an insulating case 1, The conductive terminal 2, the conductive terminal 3, the conductive terminal 4, and the conductive terminal 5 are included, and the conductive terminal 2, the conductive terminal 3, the conductive terminal 4, and the conductive terminal 5 are all attached to the insulating case 1. And one end thereof extends to the outside of the insulating case 1. The conductive terminal 2, the conductive terminal 3, the conductive terminal 4, and the conductive terminal 5 may be made of a conductive material such as copper, and the insulating case 1 is made of plastic.

The conductive terminal 3 is provided with the first positioning portion 31 and the second positioning portion 32, and the insulating case 1 is fitted with the first positioning portion 31 of the conductive terminal 3. A second fitting portion 32a to be fitted to the fitting portion 31a and the second positioning portion 32 of the conductive terminal 3 is installed.

The first positioning portion 31 forms a close contact fitting with the first fitting portion 31a, and the second positioning portion 32 forms a gap fitting with the second fitting portion 32a. After the first fitting portion 31a is deformed to a predetermined degree, the second positioning portion 32 is fitted into the second fitting portion 32a to further position the conductive terminal 3.

The length of the conductive terminal 3 on the outside of the insulating case 1 is longer than the length of the conductive terminal 3 on the inside of the insulating case 1.

The other end of the conductive terminal 3 inside the insulating case 1 is fixedly connected to one end of the dynamic spring piece 7 of the magnetic latching relay. The conductive terminal 3 on which the first positioning portion 31 and the second positioning portion 32 are installed may be fixedly connected to the static spring piece, or may be fixedly connected to the static spring piece, depending on specific structural requirements. You may form a structure integrated with.

The first positioning portion 31 is a first ridge installed on the side surface of the conductive terminal 3, and the second positioning portion 32 is a second position installed on the side surface of the conductive terminal 3. The first fitting portion 31a is a long concave groove installed in the insulating case 1, and the second fitting portion 32a is a support installed in the insulating case 1. The second positioning portion 32 is inclined with respect to the first positioning portion 31. When the conductive terminal 3 is attached to the case 1, the first positioning portion 31 engages with the first fitting portion 31a and deforms the first fitting portion 31a to a predetermined degree. Then, the second positioning portion 32 leans against the second fitting portion 32a.

As further shown in FIG. 11, the first positioning portion 31 and the second positioning portion 32 are located on the same side surface of the conductive terminal, and the first positioning portion 31 has a guide slope 311. Will be installed.

Depending on the different structural arrangements, the first positioning section 31 and the second positioning section 32 may be located on different sides of the conductive terminal 3.

As described above, in the present invention, the first positioning portion of the conductive terminal forms a close contact with the first fitting portion of the insulating case, and the second positioning portion of the conductive terminal is insulated. By forming a gap fit with the second fitting portion of the case, the assembly and positioning of the conductive terminals in the insulating case are facilitated. When the part extending to the outside of the insulating case of the conductive terminal is long and heavy, or the part extending to the outside of the insulating case of the conductive terminal is pressed by a screw for connecting an external electric device and stressed. When the first fitting portion is significantly deformed, the second positioning portion is fitted to the second fitting portion to further position the conductive terminal, whereby the conductive terminal is further positioned. Ensure that the conductive terminals do not shift significantly and improve the positioning accuracy of the conductive terminals. By improving the positioning accuracy of the conductive terminals, the positioning accuracy of the dynamic contact and the static contact can be improved, the contact performance can be guaranteed, and the performance of the magnetic latching relay can be ensured.

The above are just two preferred embodiments of the invention, and any equivalent modification made by one of ordinary skill in the art based on the claims is within the scope of the invention.

Claims (13)

A case (1), a plurality of conductive terminals (2, 3, 4, 5), a push card (6) and a plurality of moving springs (7) are included, and one end of each moving spring (7) is one conductive. Fixedly connected to one end of the terminal, the conductive terminal (2, 3, 4, 5) is attached to the case (1) and one end thereof extends to the outside of the case (1), and the push card (6). And the plurality of dynamic springs (7) are all located inside the case (1), and the push card (6) includes a base (61) and a plurality of dynamic spring connections (62), and the base (61). ) Is connected to the armature assembly, each dynamic spring connection (62) is connected to the other end of one dynamic spring (7), and between the base (61) and the dynamic spring connection (62). , Fixed connection by push-pull arm (63), or fixed connection by push-pull arm (63), and adjacent moving spring connection (62) is fixedly connected by push-pull arm (63), and each moving spring The connecting portion (62) has a cross section (E) that overlaps the symmetrical plane (D) of the moving spring (7) after being connected to the moving spring (7), and the cross section of each moving spring connecting portion (62). (E) are all located on the same plane, the cross section (E) of the moving spring connecting portion (62) is a horizontal plane, and at least two push-pull arms (63) are relative to the cross section (E). By offsetting the push-pull arm up and down and installing the push-pull arm offset, the conductive terminal intersecting the push-pull arm is provided with space for increasing the size of the conductive terminal in the width direction. A magnetic latching relay that improves the current capacity of the conductive terminal. Both sides of the base portion (61) are fixedly connected to the moving spring connection portion (62) by push-pull arms (63), respectively, and the push-pull arms (63) on both sides of the base portion (61) are attached to the cross section (E). The magnetic latching relay according to claim 1, wherein the magnetic latching relay is installed so as to be vertically offset from each other and parallel to each other, and a rectangular through hole connected to an armature assembly is installed in an intermediate portion of the base portion (61). The magnetic latching relay according to claim 2, wherein an oblique support rod (64) is installed between the base portion (61) and the push-pull arms (63) on both sides thereof. The magnetic latching relay according to claim 1, wherein the push points (a, b) to which the armature assembly is connected to the base (61) are also located in the cross section (E). Each of the moving spring connection portions (62) is located between the upper end cut surface (F) and the lower end cut surface (G) of the base portion (61), and the upper end cut surface of the base portion (61). The magnetic latching relay according to claim 1, wherein the cut surface (G) at the lower end (F) and the cut surface (G) at the lower end are parallel to the cross section (E). The dynamic spring connecting portion (62) includes two vertical rods (621) installed at intervals and one horizontal rod (622) connecting an intermediate portion of the inner surface of the two vertical rods (621). , The horizontal rod (622) has a horizontally symmetric cross section, and the horizontally symmetric cross section of the horizontal rod (622) overlaps the plane of symmetry of the dynamic spring (7) and is 2 with the upper surface of the horizontal rod (622). The inner surface of the one vertical rod (621) forms the upper engaging groove (62a) of the moving spring (7), and the lower surface of the horizontal rod (622) and the inner surface of the two vertical rods (621) form the moving spring. The lower engaging groove (62b) of (7) is formed, and the moving spring connecting portion (62) is fixedly connected to the push-pull arm (63) by the outer surface of the vertical rod (621).
Two engaging portions (71) are installed in each moving spring (7), and one end of each of the two engaging portions (71) is an upper engaging groove (62a) of the moving spring connecting portion (62). ) Or the lower engaging groove (62b), and the two engaging portions (71) do not contact the lateral rod (622), and the two engaging portions (71) are respectively 1 The magnetic latching relay according to claim 1, wherein the two dynamic contacts (711) are fixedly connected. The magnetic latching relay according to claim 6, wherein the edges of the two engaging portions (71) in each dynamic spring (7) are bent toward the same side. Each moving spring (7) further includes one holding spring piece (72), two connecting ends (721) are provided on one side of the holding spring piece (72), and one on the other side. Two positioning engagement grooves (722) are installed, and the two connection ends (721) on one side of the holding spring piece (72) are fixedly connected to the two engagement portions (71) in the moving spring (7), respectively. When the positioning engagement groove (722) on the other side of the holding spring piece (72) engages with the lateral rod (622), the two engaging portions (71) in the dynamic spring 7 become the lateral rod (622). The magnetic latching according to claim 6, wherein the pressing spring piece (72) is pressed against the inner surface of one vertical rod (621) of the moving spring connecting portion (62) without contacting the pressing spring piece (72). relay. A first positioning portion (21, 31) and a second positioning portion (22, 32) are installed in at least one conductive terminal (2, 3), and the first positioning portion (22, 32) is installed in the case (1). The first fitting portion (21a, 31a) fitted to the positioning portion (21, 31) and the second fitting portion (22a, 32a) fitted to the second positioning portion (22, 32). ) Is installed, the first positioning portion (21, 31) forms a close fitting with the first fitting portion (21a, 31a), and the second positioning portion (22, 32) is formed. , A gap fitting is formed with the second fitting portion (22a, 32a), the first fitting portion (21a, 31a) is deformed to a predetermined degree, and then the second positioning portion (21a, 31a) is deformed to a predetermined degree. 22, 32) according to any one of claims 1 to 8, wherein the conductive terminals (2, 3) are further positioned by being fitted into the second fitting portion (22a, 32a). Magnetic latching relay. The magnetic latching relay according to claim 9, wherein the length of the conductive terminals (2, 3) outside the case (1) is longer than the length of the conductive terminals inside the case (1). The first positioning portion (21) is a first ridge installed on the side surface of the conductive terminal (2), and the second positioning portion (22) is the conductive terminal (2). The first fitting portion (21a) is a first elongated concave groove installed in the case (1), which is a second ridge installed on the side surface of the case. The fitting portion (22a) is a second elongated concave groove installed in the case (1), and the first positioning portion (21) and the second positioning portion (22) are When the first fitting portion (21a) and the second fitting portion (22a) are parallel to each other and the conductive terminal (2) is attached to the case (1). The first positioning portion (21) engages with the first fitting portion (21a), and the second positioning portion (22) engages with the second fitting portion (22a). The magnetic latching relay according to claim 9. The first positioning portion (21) and the second positioning portion (22) are located on the same side surface of the conductive terminal (2), and the side surface of the conductive terminal (2) is perpendicular to the horizontal plane. In this case, the magnetic latching relay according to claim 11, wherein the first positioning unit (21) and the second positioning unit (22) are installed so as to be vertically displaced from each other. The first positioning portion (31) is a first ridge installed on the side surface of the conductive terminal (3), and the second positioning portion (32) is the conductive terminal (3). The first fitting portion (31a) is a long concave groove installed in the case (1), and is a second convex strip installed on the side surface of the case. Reference numeral (32a) is a support portion installed in the case (1), and the second positioning portion (32) is inclined with respect to the first positioning portion (31), and the conductive terminal is provided. When the (3) is attached to the case (1), the first positioning portion (31) engages with the first fitting portion (31a), and the first fitting portion (31a) is engaged with the first fitting portion (31a). The magnetic latching relay according to claim 9, wherein the second positioning portion (32) leans against the second fitting portion (32a) after being deformed to a predetermined degree.

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