Relay

Abstract

The invention relates to a relay. The relay includes: a base; the contact assembly comprises a first movable spring part, a second movable spring part, a first static spring part and a second static spring part which are arranged on the base, the first movable spring part is opposite to the first static spring part, the second movable spring part is opposite to the second static spring part, and at least part of the first static spring part can generate flexible deformation; the electromagnetic system is arranged on the base and used for driving the first movable spring part and the second movable spring part to move in the direction close to or away from the first static spring part and the second static spring part. And the stroke difference that the electromagnetic system drives the first movable spring part and the first static spring part to make contact is smaller than the stroke difference that the electromagnetic system drives the second movable spring part and the second static spring part to make contact. According to the relay, the first static spring part can absorb contact stress through flexible deformation, and the first static spring part and the first movable spring part are prevented from being damaged and deformed due to stress.

Description

Technical Field

[0001] The present application relates to the technical field of relays, and in particular to a relay. Background Art

[0002] In a relay, a moving spring part and a stationary spring part are usually provided. The relay drives the armature to rotate through the coil assembly to move the push card, thereby driving the moving spring part to move toward or away from the stationary spring part to control the contact or separation of the moving contact on the moving spring part and the stationary contact on the stationary spring part.

[0003] In order to meet the requirements of low resistance and low temperature rise, some relays are provided with two parallel moving spring parts and two parallel static spring parts, and one of the two groups of moving spring parts and static spring parts is controlled to contact first relative to the other group when in contact, and separate later relative to the other group when separating, so that the group that contacts first and separates later plays the role of arcing. However, such a setting will cause a large overtravel of one group of moving spring parts and static spring parts, resulting in a large contact stress of the moving spring parts and static spring parts of this group, which is easy to be damaged and deformed, affecting the contact accuracy. Summary of the invention

[0004] Based on this, it is necessary to provide a relay to address the problem that the dynamic spring part and the static spring part of a relay with two sets of dynamic spring parts and static spring parts are easily damaged due to excessive technical stress.

[0005] A relay, comprising:

[0006] Base;

[0007] A contact assembly, comprising a first movable spring portion, a second movable spring portion, a first static spring portion, and a second static spring portion, all of which are arranged on the base, the first movable spring portion and the second movable spring portion are electrically connected to each other, the first static spring portion and the second static spring portion are electrically connected to each other, the first movable spring portion and the first static spring portion are opposite to each other, the second movable spring portion and the second static spring portion are opposite to each other, and at least a portion of the first static spring portion can be flexibly deformed;

[0008] The electromagnetic system is arranged on the base and is used to drive the first movable spring part and the second movable spring part to move toward or away from the first static spring part, and the stroke difference of the first movable spring part and the first static spring part brought into contact by the electromagnetic system is smaller than the stroke difference of the second movable spring part and the second static spring part brought into contact by the electromagnetic system.

[0009] In the above relay, the difference in stroke of the first movable spring part and the first static spring part driven by the electromagnetic system to contact is smaller than the difference in stroke of the second movable spring part and the second static spring part driven by the electromagnetic system to contact, that is, in the process of the two groups of movable spring parts and static spring parts contacting each other, the first movable spring part and the first static spring part contact each other first, and the second movable spring part and the second static spring part contact each other later, and in the process of the two groups of movable spring parts and static spring parts separating from each other, the second movable spring part and the second static spring part separate from each other first, and the first movable spring part and the first static spring part separate from each other later. As a result, the second movable spring part and the second static spring part mainly play the role of current carrying in the circuit, while the first movable spring part and the first static spring part can play the role of arc burning and ablation in the circuit, and the cooperation of the two groups of movable spring parts and static spring parts is conducive to reducing the resistance and temperature rise of the circuit. At the same time, the overtravel of the first movable spring part and the first static spring part used for arc burning and ablation is relatively large, that is, when the two groups of movable spring parts and static spring parts are in contact, the contact stress between the first movable spring part and the first static spring part is greater than the contact stress between the second movable spring part and the second static spring part. Therefore, the first static spring part designed for arc burning and ablation can undergo flexibly deformed, and the first static spring part can absorb the contact stress between the first movable spring part and the first static spring part through flexible deformation, thereby preventing the first static spring part and the first movable spring part from being damaged and deformed due to stress, thereby affecting the contact accuracy, which is beneficial to improving the performance reliability of the relay.

[0010] In one embodiment, the second static spring portion includes a fixed portion and a second static contact, the fixed portion is fixedly disposed on the base, the second static contact is disposed on the fixed portion, and the material of the fixed portion is a rigid material.

[0011] In one embodiment, one end of the first movable spring portion is fixedly disposed on the base, and the other end is connected to the electromagnetic system, and the first movable spring portion is capable of flexibly deforming.

[0012] In one embodiment, the first static spring part includes a contact part and a connecting part, the connecting part is electrically connected to the second static spring part, and the contact part is opposite to the first movable spring part; the second static spring part is provided with a second static contact for contacting the second movable spring part, and at least part of the contact part is located on the side of the second static contact facing away from the base.

[0013] In one embodiment, the connecting portion is fixedly disposed on the second static spring portion, and the contact portion extends out of the second static spring portion.

[0014] In one of the embodiments, the first static spring portion further includes a first static contact point disposed on the contact portion and configured to contact the first movable spring portion, and the first static contact point is flush with the second static contact point.

[0015] In one embodiment, the first static spring portion has at least one bend in the extension direction.

[0016] In one embodiment, the first static spring portion further includes a bending portion having two ends respectively connected to the contact portion and the connecting portion, and a bend exists between the bending portion and the contact portion, and between the bending portion and the connecting portion.

[0017] In one embodiment, the first static spring part also includes a buffer part connected to the contact part, the relay is provided with a buffer protrusion, the buffer protrusion is provided on the side of the first moving spring part facing the first static spring part, and the buffer part abuts against the side of the buffer protrusion facing away from the first moving spring part.

[0018] In one of the embodiments, the buffer protrusion is arranged on the base, or the buffer protrusion is arranged on the second static spring part.

[0019] In one embodiment, the electromagnetic system includes a coil assembly and an armature, the relay also includes a push card, the coil assembly is arranged on the base, the armature is movably connected to the base, the push card is movably connected to the armature, the first movable spring part and the second movable spring part are both connected to the push card, and the armature can drive the first movable spring part and the second movable spring part to move through the push card under the driving force of the electromagnetic force of the coil assembly.

[0020] In one embodiment, a distance between the first dynamic spring portion and the first static spring portion is smaller than a distance between the second dynamic spring portion and the second static spring portion.

[0021] In one embodiment, the first movable spring portion and the second movable spring portion are at least partially offset in the direction in which the first movable spring portion points to the first static spring portion, and the distance between the first movable spring portion and the first static spring portion is smaller than the distance between the second movable spring portion and the first static spring portion.

[0022] In one embodiment, the relay includes two pushing cards arranged side by side, the first movable spring part and the second movable spring part are respectively connected to the two pushing cards, the armature includes a main body and a pushing part connected to each other, the main body is rotatably connected to the base, at least part of the pushing part is embedded in the two pushing cards, and the pushing part can move toward or away from the first static spring part under the drive of the main body, so as to push the pushing card to drive the first movable spring part and the second movable spring part to move, and on the side of the pushing part facing the first static spring part, the distance between the pushing part and the pushing card connected to the first movable spring part is smaller than the distance between the pushing part and the pushing card connected to the second movable spring part. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of relays in some embodiments.

[0024] Figure 2 This is a schematic diagram of the structure in which the armature is embedded in the push card in some embodiments.

[0025] Figure 3 Schematic diagram of the structure of the relay from another angle in some embodiments.

[0026] Figure 4 for Figure 3 The relay shown is a partial enlarged schematic diagram of the circle area.

[0027] Figure 5 Schematic diagram of the structure of the contact assembly in some embodiments.

[0028] Figure 6 Schematic diagram of the structure of the first static spring part and the second static spring part in some embodiments.

[0029] Figure 7 for Figure 6 A schematic structural diagram of the first static spring part and the second static spring part at another angle is shown.

[0030] Figure 8 for Figure 6 An exploded schematic diagram of the first static spring part and the second static spring part is shown.

[0031] Fig. 9 Schematic diagram of the structure of the first dynamic spring part and the second dynamic spring part in some embodiments.

[0032] Fig.10 Schematic diagram of the structure in which the first dynamic spring portion and the second dynamic spring portion are connected to the push card in some embodiments.

[0033] Fig.11 Schematic diagram of the structure of a push card in some embodiments.

[0034] Fig.12 Schematic diagram of the structure of the relay when the electromagnetic system is provided with two push cards in some embodiments.

[0035] Fig.13 This is a schematic diagram of a structure in which the first movable spring portion and the second movable spring portion are respectively arranged in two pushing cards in some embodiments.

[0036] Fig.14 It is a schematic diagram of the structure of the relay when the electromagnetic system is provided with two push cards in some other embodiments.

[0037] Reference numerals:

[0038] 10. Relay; 11. Base; 111. Buffering protrusion; 12. Contact assembly; 121. First moving spring part; 1211. First moving contact; 122. Second moving spring part; 1221. Second moving contact; 123. First static spring part; 1231. Contact part; 1232. Connecting part; 1233. First static contact; 1234. Bending part; 1235. Buffering part; 124. Second static spring part; 1241. Fixing part; 1242. Second static contact; 13. Electromagnetic system; 131. Coil assembly; 132. Armature; 1321. Main body; 1322. Pushing part; 133. Pushing card; 1331. First slot; 1332. Second slot. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0045] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 A schematic diagram of the structure of the relay 10 in some embodiments, Figure 2 Schematic diagram of the assembly of the first movable spring portion 121, the second movable spring portion 122, the armature 132 and the push card 133 in some embodiments. Figure 31 is a schematic diagram of the structure of the relay 10 at another angle in some embodiments. The relay 10 provided in the present application can be used to control the on and off of any applicable circuit. In some embodiments, the relay 10 includes a base 11, a contact assembly 12 and an electromagnetic system 13. The contact assembly 12 includes a first movable spring portion 121, a second movable spring portion 122, a first static spring portion 123 and a second static spring portion 124 arranged on the base 11. The first movable spring portion 121 and the second movable spring portion 122 are electrically connected to each other, the first static spring portion 123 and the second static spring portion 124 are electrically connected to each other, the first movable spring portion 121 is opposite to the first static spring portion 123, and the second movable spring portion 122 is opposite to the second static spring portion 124. The electromagnetic system 13 is arranged on the base 11, and can drive the first movable spring part 121 and the second movable spring part 122 to move toward or away from the first static spring part 123 and the second static spring part 124, so that the first movable spring part 121 and the first static spring part 123 are in contact, and the second movable spring part 122 is in contact with the second static spring part 124, or the first movable spring part 121 and the first static spring part 123 are separated, and the second movable spring part 122 and the second static spring part 124 are separated.

[0046] The first movable spring part 121, the second movable spring part 122, the first static spring part 123 and the second static spring part 124 are provided through the base 11, and the first movable spring part 121 and the second movable spring part 122 can both be connected to the conductive structure provided through the base 11, and the first movable spring part 121 and the second movable spring part 122 are electrically connected to each other through the conductive structure, and the conductive structure is provided through the part of the side of the base 11 facing away from the electromagnetic system 13 for communicating with an external circuit. The first static spring part 123 and the second static spring part 124 are electrically connected to each other, and at least one of the first static spring part 123 and the second static spring part 124 is provided through the base 11, and at least one of the first static spring part 123 and the second static spring part 124 is provided through the part of the side of the base 11 facing away from the electromagnetic system 13 for communicating with an external circuit. When at least one group of the first dynamic spring part 121 and the first static spring part 123, and the second dynamic spring part 122 and the second static spring part 124 are in contact, the external circuit is turned on; when the first dynamic spring part 121 and the first static spring part 123, and the second dynamic spring part 122 and the second dynamic spring part 124 are separated, the external circuit is turned off.

[0047] In some embodiments, the electromagnetic system 13 includes a coil assembly 131, a yoke and an armature 132, and the relay 10 further includes a push card 133. The coil assembly 131 is disposed on the base 11, the yoke passes through the coil assembly 131 and is used to conduct the magnetic field generated by the coil assembly 131, the armature 132 is rotatably disposed on the base 11, the push card 133 is movably connected to the armature 132, and the first movable spring portion 121 and the second movable spring portion 122 are both connected to the push card 133. When the coil is energized or the direction of the current in the coil changes, the coil assembly 131 can drive the armature 132 to rotate relative to the base 11 by means of electromagnetic force, and the rotation of the armature 132 relative to the base 11 can enable the push card 133 to drive the first movable spring portion 121 and the second movable spring portion 122 to move in a direction close to or away from the first static spring portion 123 and the second static spring portion 124. It should be noted that in the present application, the naming of the base 11 does not mean any limitation on the structure and setting position of the base 11. In the relay 10, the setting position of the base 11 is not limited. The base 11 includes but is not limited to a base structure, an upper shell structure or an outer shell structure.

[0048] Further, in some embodiments, the difference in stroke of the first movable spring part 121 and the first static spring part 123 brought into contact by the electromagnetic system 13 is smaller than the difference in stroke of the second movable spring part 122 and the second static spring part 124 brought into contact by the electromagnetic system 13. In other words, in the process of the electromagnetic system 13 driving the first movable spring part 121 and the second movable spring part 122 to move toward the first static spring part 123 and the second static spring part 124, the rotation stroke of the first movable spring part 121 and the first static spring part 123 in contact with the armature 132 relative to the base 11 is smaller than the rotation stroke of the second movable spring part 122 and the second static spring part 124 in contact with the armature 132 relative to the base 11. In other words, in the process of making the two groups of movable spring parts and the two groups of static spring parts contact each other, the first movable spring part 121 and the first static spring part 123 will contact each other first, and the second movable spring part 122 and the second static spring part 124 will contact each other later, and in the process of making the two groups of movable spring parts and the two groups of static spring parts separate from each other, the second movable spring part 122 and the second static spring part 124 will separate from each other first, and the first movable spring part 121 and the first static spring part 123 will separate from each other later. Therefore, the second movable spring part 122 and the second static spring part 124 mainly play the role of carrying current in the circuit, while the first movable spring part 121 and the first static spring part 123 can play the role of arc burning and ablation in the circuit. The first movable spring part 121 and the second movable spring part 122 can be connected in parallel with each other, and the first static spring part 123 and the second static spring part 124 can be connected in parallel with each other. The parallel connection of the two sets of movable spring parts and static spring parts is conducive to reducing the resistance of the circuit. At the same time, the second movable spring part 122 and the second static spring part 124 are set to contact first and then separate, so that the two sets of movable spring parts and static spring parts are in a state of contacting or separating in sequence during the contact or separation process, so that only one set of movable spring parts and one set of static spring parts are separated at the same time, which is also conducive to improving the stability of the current-carrying contact resistance, thereby improving the temperature rise stability of the circuit. In some embodiments, the first movable spring part 121 and the second movable spring part 122 are used to be inserted at the root of the base 11 and are set as an integrated structure, so that the first movable spring part 121 and the second movable spring part 122 are connected in parallel with each other, thereby simplifying the circuit design of the parallel setting, reducing the preparation cost of the relay 10, and also helping to improve the processing and assembly positioning accuracy between the first movable spring part 121, the second movable spring part 122 and the base 11. Of course, in other embodiments, the first movable spring portion 121 and the second movable spring portion 122 may also be independent of each other and their roots are respectively inserted into the base 11, and the first movable spring portion 121 and the second movable spring portion 122 may be connected in parallel through a lead-out line.

[0049] Furthermore, one end of the first movable spring portion 121 and the second movable spring portion 122 is fixedly disposed on the base 11, and the other end is connected to the push card 133 and can move with the push card 133, that is, at least part of the first movable spring portion 121 and the second movable spring portion 122 can be flexibly deformed. In some embodiments, at least part of the first static spring portion 123 can be flexibly deformed, so that the first static spring portion 123 and the first movable spring portion 121 can be flexibly deformed with the contact stress when they are in contact. It can be understood that since the first movable spring portion 121 and the first static spring portion 123 are in contact first, and after the first movable spring portion 121 and the first static spring portion 123 are in contact, the armature 132 will continue to move relative to the base 11 until the second movable spring portion 122 and the second static spring portion 124 are in contact, and in this process, the first movable spring portion 121 will further squeeze the first static spring portion 123. That is, the overtravel of the first movable spring part 121 and the first static spring part 123 is greater than the overtravel of the second movable spring part 122 and the second movable spring part 124. When the second movable spring part 122 contacts the second static spring part 124, the contact stress between the first movable spring part 121 and the first static spring part 123 is greater than the contact stress between the second movable spring part 122 and the second static spring part 124. Therefore, a flexible material capable of flexible deformation is used as the first static spring part 123, and the first static spring part 123 and the first movable spring part 121 can form a double flexible structure. When the first movable spring part 121 and the first static spring part 123 contact, the flexible deformation of the first movable spring part 121 and the first static spring part 123 can effectively absorb the contact stress between the first movable spring part 121 and the first static spring part 123, and prevent the first static spring part 123 and the first movable spring part 121 from being damaged and deformed due to stress, thereby affecting the contact accuracy, which is beneficial to improving the performance reliability of the relay 10.

[0050] Combination Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in some embodiments, the second static spring part 124 includes a fixed portion 1241 and a second static contact 1242, the fixed portion 1241 is fixedly arranged on the base 11, for example, penetrates the base 11, the second static contact 1242 is arranged on the fixed portion 1241, and is located on the same side of the base 11 as the electromagnetic system 13, and the material of the fixed portion 1241 is a rigid material. Thus, it is possible to avoid deformation of the second static spring part 124 and affect the contact accuracy of the second static spring part 124 and the second dynamic spring part 122, and with the design of the first static spring part 123 being a flexible material, the contact accuracy and performance reliability of the relay 10 can be taken into account. In the present application, the materials of the first dynamic spring part 121, the second dynamic spring part 122, and the first static spring part 123 of flexible material include but are not limited to any applicable materials such as copper alloy, stainless steel, copper foil, aluminum foil, etc., and the materials of the fixed portion 1241 of the second static spring part 124 of rigid material include but are not limited to any applicable materials such as copper, copper alloy, stainless steel, nickel alloy, etc.

[0051] In some embodiments, the first static spring portion 123 includes a contact portion 1231, a connecting portion 1232, and a first static contact 1233. The connecting portion 1232 is fixedly disposed on the second static spring portion 124 by any suitable fixing method such as welding and is electrically connected to the second static spring portion 124. The contact portion 1231 extends from the second static spring portion 124 and is opposite to the first moving spring portion 121. The first static contact 1233 is disposed on the contact portion 1231 and is used to contact the first moving spring portion 121. The arrangement of the first static spring portion 123 being disposed on the second static spring portion 124 allows the first static spring portion 123 and the second static spring portion 124 to be connected in parallel, which is beneficial to simplifying the parallel circuit design of the relay 10, reducing the difficulty and cost of preparation, and also beneficial to improving the processing and assembly positioning accuracy between the base, the first static spring portion 123, and the second static spring portion 124. Of course, in other embodiments, the first static spring portion 123 and the second static spring portion 124 may also be two independent structures respectively inserted on the base 11, and connected in parallel through lines such as wires.

[0052] Further, in some embodiments, the second static spring portion 124 is provided with a second static contact 1242 for contacting the second moving spring portion 122, and at least part of the contact portion 1231 is located on the side of the second static contact 1242 facing away from the base 11. That is, the first static contact 1233 and the second static contact 1242 are staggered in the thickness direction of the base 11. It can be understood that the first static spring portion 123 and the second static spring portion 124 are arc burning erosion ends, and ablation splashing may occur during the arc burning process. The first static contact 1233 and the second static contact 1242 are staggered in the thickness direction of the base 11, which can reduce the risk of contamination of the second static contact 1242 by the first static contact 1233 when ablation splashing occurs, thereby improving the stability of the contact resistance between the second static spring portion 124 and the second moving spring portion 122, and improving the performance reliability of the relay 10.

[0053] Combination Figure 5 and Fig. 9 As shown, the first movable spring part 121 is provided with a first movable contact 1211 for contacting the first static contact 1233, the second movable spring part 122 is provided with a second movable contact 1221 for contacting the second static contact 1242, and the first movable spring part 121 and the second movable spring part 122 are provided with the first movable contact 1211 and the second movable contact 1221. The parts are arranged side by side. Therefore, the design of the first static contact 1233 and the second static contact 1242 being spaced apart in the thickness direction of the base 11 is more easily adapted to the layout of the first movable spring part 121 and the second movable spring part 122, effectively realizing the contact or separation of the two groups of movable spring parts and static spring parts, and avoiding mutual interference between the components.

[0054] In other embodiments, the portion of the second static spring portion 124 on which the second static contact 1242 is provided may also be located on the side of the contact portion 1231 of the first static spring portion 123 that is away from the base 11. For example, the second static spring portion 124 is provided on the first static spring portion 123, or the first static spring portion 123 and the second static spring portion 124 are respectively provided on the base 11, and the distance between the second static contact 1242 and the base 11 is greater than the distance between the first static contact 1233 and the base 11. Therefore, during the operation of the relay 10, the first static contact 1233 is located below the second static contact 1242 in the direction of gravity. When the first movable spring portion 121 and the first static spring portion 123 play an arc burning and ablation role, the ablated products produced by the first movable contact 1211 and the first static contact 1233 are easy to fall downward under the action of gravity, and are not easy to fall on the second movable contact 1221 and the second static contact 1242 to cause the contacts to be contaminated, which is beneficial to improving the structure and performance reliability of the relay 10.

[0055] In some embodiments, the first static contact 1233 is flush with the second static contact 1242. It can be understood that since the overtravel between the first movable spring portion 121 and the first static spring portion 123 is greater than the overtravel between the second movable spring portion 122 and the second static spring portion 124, that is, when the second movable spring portion 122 and the second static spring portion 124 are in contact, the deformation of the first movable spring portion 121 is larger, which can make the contact portion 1231 move in a direction away from the first movable spring portion 121. Therefore, when the two groups of movable spring parts and static spring parts are not in contact, the first static contact 1233 and the second static contact 1242 are flush. Then, when the second movable spring part 122 and the second static spring part 124 are in contact, due to the deformation of the contact part 1231, the first static contact 1233 and the second static contact 1242 are also displaced from each other in the direction from the first movable spring part 121 to the first static spring part 123, which can further reduce the contamination of the second static contact 1242 by the ablation and splashing phenomenon of the first static contact 1233 and the first movable contact 1211, thereby improving the performance reliability of the relay 10. At the same time, the flush setting of the first static contact 1233 and the second static contact 1242 is also conducive to improving the processing and assembly efficiency and the assembly positioning accuracy.

[0056] In some embodiments, the first static spring portion 123 has at least one bend in the extension direction. For example, the first static spring portion 123 also includes a bend portion 1234 whose two ends are respectively connected to the contact portion 1231 and the connecting portion 1232, and there is a bend between the bend portion 1234 and the contact portion 1231, and between the bend portion 1234 and the connecting portion 1232, then the first static spring portion 123 has two bends in the extension direction. For example, the bend portion 1234 can be roughly perpendicular to the contact portion 1231 and the connecting portion 1232. By providing a bent first static spring portion 123, the deformation amount of the first static spring portion 123 can be increased, and the absorption capacity of the flexible deformation of the first static spring portion 123 to the contact stress can be improved, thereby further reducing the risk of the first static spring portion 123 and the first dynamic spring portion 121 being deformed due to excessive contact stress and affecting the contact accuracy. At the same time, during the preparation or assembly process of the first static spring part 123, by changing the bending angle between the bending portion 1234 and the contact portion 1231 and the connecting portion 1232, the distance between the first static contact 1233 and the second static contact 1242 in the thickness direction of the base 11 can be adjusted, which is beneficial to simplify the adjustment process of the height difference between the first static contact 1233 and the second static contact 1242, so that the first static contact 1233 and the second static contact 1242 can adopt the same static contact structure without setting a static contact structure with different cap heights, which is beneficial to improving the production efficiency of the relay 10 and reducing the production cost.

[0057] Please see again Figure 3 and Figure 4As shown, in some embodiments, the first static spring portion 123 further includes a buffer portion 1235 connected to the contact portion 1231, a buffer protrusion 111 is provided on the base 11, the buffer protrusion 111 is provided on the side of the first moving spring portion 121 facing the first static spring portion 123, and the buffer portion 1235 abuts against the side of the buffer protrusion 111 facing away from the first moving spring portion 121. It can be understood that since the first static spring portion 123 is made of a flexible material, when the first moving spring portion 121 moves toward the direction close to the first static spring portion 123 under the drive of the push card 133 until the moment when the first moving contact 1211 contacts the first static contact 1233, the first static spring portion 123 may be flexibly deformed due to the contact force and repeatedly shake, resulting in arcing and reburning erosion, which affects the performance reliability of the relay 10. A buffer portion 1235 is provided on the first static spring portion 123 to abut against the side of the buffer protrusion 111 facing away from the first moving spring portion 121. When the first static spring portion 123 vibrates, the buffer portion 1235 can collide with the buffer protrusion 111 to buffer and suppress the vibration of the first static spring portion 123, thereby suppressing the occurrence of the reburning erosion phenomenon and improving the performance stability of the relay 10. The buffer portion 1235 is not limited in its setting position and shape, as long as it can abut against the side of the buffer protrusion 111 facing away from the first moving spring portion 121 to suppress the vibration of the first static spring portion 123. In some embodiments, the first static spring portion 123 may also be provided with two buffer portions 1235, and the base 11 may be provided with two buffer protrusions 111. The two buffer portions 1235 are connected to both sides of the contact portion 1231 and respectively abut against the side of the two buffer protrusions 111 facing away from the first moving spring portion 121 to fully buffer the vibration of the first static spring portion 123. In this embodiment, the buffer protrusion 111 includes but is not limited to being set on the base 11, or set on the second static spring part 124, as long as it can abut and cooperate with the buffer part 1235. The accompanying drawings take the buffer protrusion 111 set on the base 11 as an example.

[0058] In the present application, the specific implementation method of making the difference in stroke of the electromagnetic system 13 driving the first movable spring part 121 and the first static spring part 123 to contact each other smaller than the difference in stroke of the electromagnetic system 13 driving the second movable spring part 122 and the second static spring part 124 to contact each other is not limited. For example, in some embodiments, the distance between the first movable spring part 121 and the first static spring part 123 can be smaller than the distance between the second movable spring part 122 and the second static spring part 124, so that when the push card 133 synchronously drives the first movable spring part 121 and the second movable spring part 122 to move in the direction close to the first static spring part 123 and the second static spring part 124, the first movable spring part 121 and the first static spring part 123 can contact each other first.

[0059] Specifically, refer to Fig.10 and Fig.11As shown, in some embodiments, the ends of the first movable spring portion 121 and the second movable spring portion 122 are both connected to the push card 133 and arranged side by side, and in the direction in which the first movable spring portion 121 points to the first static spring portion 123, the ends of the first movable spring portion 121 and the second movable spring portion 122 are staggered at the assembly positions on the push card 133, and the distance between the assembly position of the first movable spring portion 121 on the push card 133 and the first static spring portion 123 is smaller than the distance between the assembly position of the second movable spring portion 122 on the push card 133 and the second static spring portion 124. In this embodiment, the portion of the armature 132 facing the push card 133 can be embedded in the push card 133 and movably cooperate with the push card 133, so that when the armature 132 rotates relative to the base 11, the push card 133 can drive the first movable spring portion 121 and the second movable spring portion 122 to move. The push card 133 may be provided with a first groove 1331 for assembling the end of the first movable spring part 121 and a second groove 1332 for assembling the end of the second movable spring part 122. The first groove 1331 and the second groove 1332 may be arranged to be at least partially offset in the direction from the first movable spring part 121 to the first static spring part 123, so as to control the different assembly positions of the first movable spring part 121 and the second movable spring part 122 on the push card 133. Such an arrangement can reduce the number of parts of the relay 10, reduce the assembly and position adjustment processes of the first movable spring part 121 and the second movable spring part 122, and reduce the manufacturing cost.

[0060] Combination Figure 1 , Fig.12 and Fig.13 As shown, in some embodiments, the electromagnetic system 13 may also include two push cards 133 arranged side by side, and the ends of the first movable spring part 121 and the second movable spring part 122 are respectively connected to the two push cards 133. When the relay 10 is provided with two push cards 133, the armature 132 can be embedded in the two push cards 133 at the same time to synchronously drive the two push cards 133 to move. In this embodiment, the assembly positions of the first movable spring part 121 and the second movable spring part 122 on the two push cards 133 can be staggered in the direction from the first movable spring part 121 to the first static spring part 123, so as to achieve different overtravel effects of the two groups of movable spring parts and static spring parts.

[0061] It is understandable that, since one of the two groups of moving spring parts and the two groups of static spring parts plays the role of arc burning and ablation, the temperature of the first static spring part 123 and the first moving spring part 121 that play the role of arc burning and ablation is usually high when energized. Therefore, two push cards 133 are provided to be connected to the first moving spring part 121 and the second moving spring part 122 respectively, which is also conducive to setting push cards 133 of different materials according to the temperature difference between the first moving spring part 121 and the second moving spring part 122. For example, the push card 133 connected to the first moving spring part 121 can be made of a material with stronger temperature resistance, so as to avoid damage to the push card 133 due to excessive temperature of the first moving spring part 121 during arc burning and ablation, which is conducive to reducing the preparation cost and structural reliability of the relay 10.

[0062] Combination Figure 1 , Figure 2 and Fig.14 As shown, in other embodiments, when the electromagnetic system 13 is provided with two push cards 133 arranged side by side, the armature 132 includes a main body 1321 and a push part 1322 connected to each other, the main body 1321 is rotatably connected to the base 11, and at least part of the push part 1322 is embedded in the two push cards 133. The main body 1321 can rotate relative to the base 11 under the drive of the coil assembly 131, and the push part 1322 can move in a direction close to or away from the first static spring part 123 under the drive of the active part, so as to push the push card 133 to drive the first dynamic spring part 121 and the second dynamic spring part 122 to move. The push part 1322 can be embedded in the two push cards 133, and on the side of the push part 1322 facing the first static spring part 123, the distance between the push part 1322 and the push card 133 connected to the first dynamic spring part 121 is smaller than the distance between the push card 133 and the push card 133 connected to the second dynamic spring part 122. In this embodiment, the first movable spring portion 121 and the second movable spring portion 122 may be aligned with each other in a direction from the first movable spring portion 121 to the first static spring portion 123 .

[0063] Therefore, when the pushing portion 1322 moves toward the direction approaching the first static spring portion 123 driven by the main body 1321, the pushing portion 1322 will first contact the pushing card 133 connected to the first dynamic spring portion 121, and push the pushing card 133 to drive the first dynamic spring portion 121 to move toward the direction approaching the first static spring portion 123, and then contact the pushing card 133 connected to the second dynamic spring portion 122, and push the pushing card 133 to drive the second dynamic spring portion 122 to move toward the direction approaching the second static spring portion 124, thereby achieving the effect that the first dynamic spring portion 121 and the first static spring portion 123 contact first, and the second dynamic spring portion 122 and the second static spring portion 124 contact later. In the process of driving the two groups of moving spring parts and the two groups of static spring parts to separate, when the pushing part 1322 is facing away from the first moving spring part 121 and moves in a direction away from the first static spring part 123, it will first contact the pushing card 133 connected to the second moving spring part 122, and then contact the pushing card 133 connected to the first moving spring part 121, so as to achieve the first separation of the second moving spring part 122 and the second static spring part 124, and the last separation of the first moving spring part 121 and the first static spring part 123. By setting the distance relationship between the two opposite sides of the pushing part 1322 and the two pushing cards 133 to achieve different contact and separation sequences of the two groups of moving spring parts and the static spring parts, it is also helpful to simplify the component structure of the relay 10 and reduce the manufacturing cost of the relay 10.

[0064] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A relay, characterized in that: include: Base; A contact assembly, comprising a first movable spring portion, a second movable spring portion, a first static spring portion, and a second static spring portion, all of which are arranged on the base, the first movable spring portion and the second movable spring portion are electrically connected to each other, the first static spring portion and the second static spring portion are electrically connected to each other, the first movable spring portion and the first static spring portion are opposite to each other, the second movable spring portion and the second static spring portion are opposite to each other, and at least a portion of the first static spring portion can be flexibly deformed; The electromagnetic system is arranged on the base and is used to drive the first movable spring part and the second movable spring part to move toward or away from the first static spring part, and the stroke difference of the first movable spring part and the first static spring part brought into contact by the electromagnetic system is smaller than the stroke difference of the second movable spring part and the second static spring part brought into contact by the electromagnetic system.

2. The relay according to claim 1, characterized in that: The second static spring part includes a fixed portion and a second static contact point, the fixed portion is fixedly arranged on the base, the second static contact point is arranged on the fixed portion, and the material of the fixed portion is a rigid material.

3. The relay according to claim 1, characterized in that: One end of the first movable spring part is fixedly arranged on the base, and the other end is connected to the electromagnetic system. The first movable spring part can undergo flexibly deformation.

4. The relay according to claim 1, characterized in that: The first static spring part includes a contact part and a connecting part, the connecting part is electrically connected to the second static spring part, and the contact part is opposite to the first movable spring part; the second static spring part is provided with a second static contact for contacting the second movable spring part, and at least part of the contact part is located on the side of the second static contact facing away from the base.

5. The relay according to claim 4, characterized in that: The connecting portion is fixedly arranged on the second static spring portion, and the contact portion extends out of the second static spring portion.

6. The relay according to claim 5, characterized in that: The first static spring portion further includes a first static contact point which is arranged on the contact point portion and is used for contacting the first movable spring portion, and the first static contact point is flush with the second static contact point.

7. The relay according to claim 5, characterized in that: The first static spring portion has at least one bend in the extending direction.

8. The relay according to claim 7, characterized in that: The first static spring portion further includes a bending portion whose two ends are respectively connected to the contact portion and the connecting portion, and there is a bend between the bending portion and the contact portion, and between the bending portion and the connecting portion.

9. The relay according to claim 4, characterized in that: The first static spring part also includes a buffer part connected to the contact part, the relay is provided with a buffer protrusion, the buffer protrusion is located on the side of the first moving spring part facing the first static spring part, and the buffer part abuts against the side of the buffer protrusion facing away from the first moving spring part.

10. The relay according to claim 9, characterized in that: The buffer protrusion is arranged on the base, or the buffer protrusion is arranged on the second static spring part.

11. The relay according to any one of claims 1 to 10, characterized in that: The electromagnetic system includes a coil assembly and an armature, and the relay also includes a push card. The coil assembly is arranged on the base, the armature is movably connected to the base, and the push card is movably connected to the armature. The first movable spring part and the second movable spring part are both connected to the push card. The armature can drive the first movable spring part and the second movable spring part to move through the push card under the driving force of the electromagnetic force of the coil assembly.

12. The relay according to claim 11, characterized in that: A distance between the first dynamic spring portion and the first static spring portion is smaller than a distance between the second dynamic spring portion and the second static spring portion.

13. The relay according to claim 12, characterized in that: The first dynamic spring portion and the second dynamic spring portion are at least partially offset in a direction in which the first dynamic spring portion points to the first static spring portion, and a distance between the first dynamic spring portion and the first static spring portion is smaller than a distance between the second dynamic spring portion and the first static spring portion.

14. The relay according to claim 11, characterized in that: The relay includes two pushing cards arranged side by side, the first movable spring part and the second movable spring part are respectively connected to the two pushing cards, the armature includes a main body and a pushing part connected to each other, the main body is rotatably connected to the base, at least part of the pushing part is embedded in the two pushing cards, and the pushing part can move towards or away from the first static spring part under the drive of the main body, so as to push the pushing card to drive the first movable spring part and the second movable spring part to move, and on the side of the pushing part facing the first static spring part, the distance between the pushing part and the pushing card connected to the first movable spring part is smaller than the distance between the pushing part and the pushing card connected to the second movable spring part.

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