Relay

Abstract

The invention relates to a relay. The electric appliance comprises a contact assembly which comprises a first movable spring part, a second movable spring part, a first static spring part and a second static spring part, the first movable spring part is opposite to the first static spring part, and the second movable spring part is opposite to the second static spring part; in the process that the electromagnetic system drives the first movable spring part and the second movable spring part to move in the direction close to the first static spring part and the second static spring part, the first movable spring part and the first static spring part make contact before the second movable spring part and the second static spring part. In the process that the electromagnetic system drives the first movable spring part and the second movable spring part to move in the direction away from the first static spring part and the second static spring part, the second movable spring part and the second static spring part are separated before the first movable spring part and the first static spring part. According to the relay, the initial contact resistance of the contact assembly can be reduced, and the stability of the contact resistance of the contact assembly in the contact or separation process is improved.

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 static spring part are usually provided. The relay drives the armature to rotate through the coil assembly to drive the push card to move, and then the push card drives the moving spring part to move towards or away from the static spring part to control the moving contact on the moving spring part to contact or separate with the static contact on the static spring part, thereby connecting or disconnecting the corresponding external circuit. However, in traditional relays, the impedance and temperature rise of the moving spring part and the static spring part are relatively high, which affects the performance stability and service life of the relay. Summary of the invention

[0003] Based on this, it is necessary to provide a relay to address the problem that the impedance and temperature rise of the moving spring part and the static spring part are high, which affects the performance stability and service life of the relay.

[0004] A relay, comprising:

[0005] A contact assembly, comprising a first movable spring portion and a second movable spring portion electrically connected to each other, and a first static spring portion and a second static spring portion electrically connected to each other, wherein the first movable spring portion is opposite to the first static spring portion, and the second movable spring portion is opposite to the second static spring portion; and,

[0006] The electromagnetic system is used to drive the first movable spring part and the second movable spring part to move in a direction close to or away from the first static spring part and the second static spring part, so that the first movable spring part contacts the first static spring part and the second movable spring part contacts the second static spring part, or the first movable spring part is separated from the first static spring part and the second movable spring part is separated from the second static spring part, and in the process in which the electromagnetic system drives the first movable spring part and the second movable spring part to move in a direction close to the first static spring part and the second static spring part, the first movable spring part and the first static spring part contact each other before the second movable spring part and the second static spring part, and in the process in which the electromagnetic system drives the first movable spring part and the second movable spring part to move in a direction away from the first static spring part and the second static spring part, the second movable spring part and the second static spring part are separated before the first movable spring part and the first static spring part.

[0007] In the above relay, the first movable spring part and the first static spring part are arranged to contact each other before the second movable spring part and the second static spring part, and the second movable spring part and the second static spring part are arranged to separate before the first static spring part and the first static spring part, so that 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. The parallel connection of the first movable spring part and the second movable spring part, and the parallel connection of the first static spring part and the second static spring part can reduce the initial contact resistance of the contact assembly, and the setting of the two groups of movable spring parts and static spring parts to contact and separate respectively can improve the stability of the contact resistance of the contact assembly during the contact or separation process, thereby facilitating the suppression of temperature rise and improving the performance stability and service life of the relay.

[0008] In one embodiment, the relay further includes a base, the second static spring portion passes through the base, the first static spring portion is arranged on the second static spring portion, and the contact assembly further includes a moving spring base, the moving spring base passes through the base, and the first moving spring portion and the second moving spring portion are arranged on the moving spring base.

[0009] In one embodiment, a first moving contact is provided on the first moving spring part, a second moving contact is provided on the second moving spring part, a first static contact is provided on the first static spring part, and a second static contact is provided on the second static spring part. The first static contact and the second static contact are spaced apart in the thickness direction of the base, the first moving spring part and the second moving spring part are arranged side by side in the thickness direction of the base, the first moving contact is opposite to the first static contact, and the second moving contact is opposite to the second static contact.

[0010] In one embodiment, the relay further includes a base, the contact assembly and the electromagnetic system are disposed on the base, the electromagnetic system includes a coil assembly and an armature assembly, the relay further includes a pushing element, the coil assembly is disposed on the base, the armature assembly is rotatably disposed on the base, the pushing element is movably connected to the armature assembly, and the first movable spring portion and the second movable spring portion are both connected to the pushing element.

[0011] In one embodiment, the pushing element is provided with a first groove and a second groove, the first groove and the second groove are spaced apart in the thickness direction of the base, the ends of the first movable spring part and the second movable spring part are respectively arranged in the first groove and the second groove, and driven by the armature assembly, the pushing element can move in a thickness direction perpendicular to the base.

[0012] In one embodiment, the armature assembly includes a main body and a matching portion connected to the main body, the main body is rotatably disposed on the base, and the rotation axis of the main body relative to the base is parallel to the thickness direction of the base, and the matching portion is embedded in the pushing element.

[0013] In one embodiment, in the second direction, at least parts of the first groove and the second groove are offset, the installation positions of the first movable spring part and the second movable spring part on the pushing element are offset, and the second direction is perpendicular to the thickness direction of the base and points from the first movable spring part to the first static spring part.

[0014] In one embodiment, in the second direction, a distance between the first movable spring portion and the first static spring portion is smaller than a distance between the second movable spring portion and the second static spring portion.

[0015] In one embodiment, the pushing element includes a first pushing card and a second pushing card arranged side by side in a first direction parallel to the thickness direction of the base, the first groove and the second groove are respectively arranged on the first pushing card and the second pushing card, the first pushing card and the second pushing card are relatively fixed, and the armature assembly is used to drive the first pushing card and the second pushing card to move synchronously along the second direction.

[0016] In one embodiment, the pushing element includes a first pushing card and a second pushing card arranged side by side in a first direction parallel to the thickness direction of the base, the first groove and the second groove are respectively arranged on the first pushing card and the second pushing card, and the first pushing card and the second pushing card can move relative to each other along the second direction.

[0017] In one of the embodiments, the mating portion has a first mating surface and a second mating surface that are arranged opposite to each other in a second direction, and the first mating surface is arranged toward the first static spring part. The mating portion can abut the first push card and the second push card through the first mating surface to drive the first movable spring part and the second movable spring part to move in a direction close to the first static spring part and the second static spring part. The mating portion can abut the first push card and the second push card through the second mating surface to drive the first movable spring part and the second movable spring part to move in a direction away from the first static spring part and the second static spring part. The second direction is perpendicular to the thickness direction of the base, and is directed from the first movable spring part to the first static spring part.

[0018] In one embodiment, in an initial state, a distance between the first mating surface and the first push card is smaller than a distance between the first mating surface and the second push card.

[0019] In one of the embodiments, in the initial state, the first matching surface abuts against the inner wall surface of the first push card and is spaced apart from the inner wall surface of the second push card.

[0020] In one of the embodiments, in the initial state, the distance between the second mating surface and the first push card is greater than the distance between the second mating surface and the second push card.

[0021] In one of the embodiments, in the initial state, the second matching surface abuts against the inner wall surface of the second push card and is spaced apart from the inner wall surface of the first push card.

[0022] In one of the embodiments, in the initial state, the first dynamic spring portion and the second dynamic spring portion are aligned in the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a relay in some embodiments in which the first static spring part and the second static spring part are omitted.

[0024] Figure 2 Schematic diagram of the structure of the relay from another angle in some embodiments.

[0025] Figure 3 Schematic diagram of the structure of the armature assembly, the pushing element and the movable spring part in some embodiments.

[0026] Figure 4 for Figure 3 A schematic structural diagram of the component shown in another angle.

[0027] Figure 5 This is a schematic diagram of the structure in which the pushing element is an integrated structure in some embodiments.

[0028] Figure 6 This is a schematic diagram of the structure of the relay when the pushing element includes a first pushing card and a second pushing card in some embodiments.

[0029] Figure 7 This is a schematic structural diagram of a relay at another angle when the pushing element includes a first pushing card and a second pushing card in some embodiments.

[0030] Figure 8 for Figure 7 The cross-sectional schematic diagram of the relay along the AA direction is shown.

[0031] Fig. 9for Figure 8 A local enlarged schematic diagram of the circle area shown.

[0032] Fig.10 Schematic diagram of the structure of the pushing element in some embodiments.

[0033] Fig.11 for Fig.10 An exploded schematic diagram of the push element is shown.

[0034] Fig.12 Schematic diagram of the structure of the pushing element in some other embodiments.

[0035] Fig.13 for Fig.12 The schematic diagram of the structure of the pushing element during the assembly process is shown.

[0036] Reference numerals:

[0037] 10. Relay; 11. Base; 12. First moving spring part; 121. First moving contact; 13. Second moving spring part; 131. Second moving contact; 14. Moving spring base; 15. First static spring part; 151. First static contact; 16. Second static spring part; 161. Second static contact; 17. Coil assembly; 18. Armature assembly; 181. Main body; 182. Matching part; 1821. First matching surface; 1822. Second matching surface; 19. Pushing element; 191. First pushing card; 1911. First slot; 1912. First guide rail structure; 1913. Hanging rod; 192. Second pushing card; 1921. Second slot; 1922. Second guide rail structure; 1923. Snap-fit ​​structure; 21. First direction; 22. Second direction; 23. Third direction. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] See also Figure 1 and Figure 2 As shown, Figure 1 Schematic diagram of the structure of the relay 10 in some embodiments in which the first static spring part 15 and the second static spring part 16 are omitted. Figure 2 1 is a schematic diagram of the structure of the relay 10 from 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 external circuit. In some embodiments, the relay 10 includes a base 11, a contact assembly and an electromagnetic system. The contact assembly is arranged on the base 11 and includes a first movable spring part 12, a second movable spring part 13, a first static spring part 15 and a second static spring part 16. The first movable spring part 12 and the second movable spring part 13 are electrically connected to each other, for example, in parallel, and the first static spring part 15 and the second static spring part 16 are electrically connected to each other, for example, in parallel. The first movable spring part 12 is provided with a first movable contact 121, the second movable spring part 13 is provided with a second movable contact 131, the first static spring part 15 is provided with a first static contact 151, and the second static spring part 16 is provided with a second static contact 161. The first movable contact 121 of the first movable spring portion 12 faces the first stationary contact 151 of the first stationary spring portion 15 , and the second movable contact 131 of the second movable spring portion 13 faces the second stationary contact 161 of the second stationary spring portion 16 .

[0045] The electromagnetic system is arranged on the base 11, and can drive the first movable spring part 12 and the second movable spring part 13 to move in a direction close to or away from the first static spring part 15 and the second static spring part 16, so that the first movable contact 121 of the first movable spring part 12 and the first static contact 151 of the first static spring part 15 are in contact, and the second movable contact 131 of the second movable spring part 13 and the second static contact 161 of the second static spring part 16 are in contact, thereby conducting the external circuit, or the first movable contact 121 of the first movable spring part 12 and the first static contact 151 of the first static spring part 15 are separated, and the second movable contact 131 of the second movable spring part 13 and the second static contact 161 of the second static spring part 16 are separated, thereby disconnecting the external circuit.

[0046] In some embodiments, the contact assembly further includes a movable spring base 14, the movable spring base 14 passes through the base 11, the first movable spring portion 12 and the second movable spring portion 13 are both arranged on the movable spring base 14 and electrically connected to the movable spring base 14, the first movable spring portion 12 and the second movable spring portion 13 are connected in parallel, and the movable spring base 14 passes through the side of the base 11 facing away from the first movable spring portion 12 and the second movable spring portion 13 for electrical connection with an external circuit. The second static spring portion 16 passes through the base 11, the first static spring portion 15 is fixedly arranged on the second static spring portion 16 and is arranged in parallel with the second static spring portion 16, and the second static spring portion 16 passes through the side of the base 11 facing away from the first static spring portion 15 for electrical connection with an external circuit.

[0047] Combination Figure 3 and Figure 4 As shown, in some embodiments, the electromagnetic system includes a coil assembly 17, a yoke and an armature assembly 18, and the relay 10 further includes a pushing element 19. The coil assembly 17 is disposed on the base 11, and the yoke passes through the coil assembly 17 and is used to conduct the magnetic field generated by the coil assembly 17. The armature assembly 18 is rotatably disposed on the base 11, and the pushing element 19 is movably connected to the armature assembly 18. The ends of the first movable spring portion 12 and the second movable spring portion 13 away from the movable spring base 14 are both connected to the pushing element 19. When the direction of the current in the coil of the coil assembly 17 changes, the coil assembly 17 can drive the armature assembly 18 to rotate relative to the base 11 by means of electromagnetic force, and the rotation of the armature assembly 18 relative to the base 11 can enable the pushing element 19 to drive the first movable spring portion 12 and the second movable spring portion 13 to move in a direction close to or away from the first static spring portion 15 and the second static spring portion 16. 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, in the process that the electromagnetic system drives the first movable spring part 12 and the second movable spring part 13 to move in the direction close to the first static spring part 15 and the second static spring part 16 until the first movable spring part 12 contacts the first static spring part 15 and the second movable spring part 13 contacts the second static spring part 16, the first movable spring part 12 contacts the first static spring part 15 before the second movable spring part 13 and the second static spring part 16. That is, when the first movable spring part 12 and the first static spring part 15 separate and the second movable spring part 13 and the second static spring part 16 separate, in the process that the electromagnetic system drives the first movable spring part 12 and the second movable spring part 13 to move in the direction close to the first static spring part 15 and the second static spring part 16, the first movable spring part 12 contacts the first static spring part 15 first, and then in the process that the electromagnetic system continues to drive the first movable spring part 12 and the second movable spring part 13 to move, the second movable spring part 13 contacts the second static spring part 16. That is, the overtravel of the first movable spring portion 12 and the first static spring portion 15 is greater than the overtravel of the second movable spring portion 13 and the second static spring portion 16 .

[0049] In the process that the electromagnetic system drives the first movable spring part 12 and the second movable spring part 13 to move in the direction away from the first static spring part 15 and the second static spring part 16 until the first movable spring part 12 and the first static spring part 15 are separated and the second movable spring part 13 and the second static spring part 16 are separated, the second movable spring part 13 and the second static spring part 16 are separated before the first movable spring part 12 and the first static spring part 15. That is to say, when the first movable spring part 12 and the first static spring part 15 are in contact and the second movable spring part 13 and the second static spring part 16 are in contact, in the process that the electromagnetic system drives the first movable spring part 12 and the second movable spring part 13 to move in the direction away from the first static spring part 15 and the second static spring part 16, the second movable spring part 13 and the second static spring part 16 are separated first, and then in the process that the electromagnetic system continues to drive the first movable spring part 12 and the second movable spring part 13 to move, the first movable spring part 12 and the second static spring part 16 are separated.

[0050] In the relay 10, the first movable spring part 12 and the first static spring part 15 are arranged to contact before the second movable spring part 13 and the second static spring part 16, and the second movable spring part 13 and the second static spring part 16 are separated before the first static spring part 15 and the first static spring part 15, so that the second movable spring part 13 and the second static spring part 16 mainly play the role of carrying current in the circuit, while the first movable spring part 12 and the first static spring part 15 can play the role of arc burning and burning in the circuit. The parallel connection of the first movable spring part 12 and the second movable spring part 13, and the parallel connection of the first static spring part 15 and the second static spring part 16 can reduce the initial contact resistance of the contact assembly, and the setting of the two groups of movable spring parts and static spring parts to contact and separate respectively makes only one group of movable spring parts and static spring parts contact or separate at the same time, which can improve the stability of the contact resistance of the contact assembly during the contact or separation process, thereby facilitating the suppression of temperature rise and improving the performance stability and service life of the relay 10.

[0051] In some embodiments, the first static contact 151 and the second static contact 161 are arranged at intervals in a first direction 21 parallel to the thickness direction of the base 11, the first dynamic spring portion 12 and the second dynamic spring portion 13 are arranged side by side in the first direction 21, one end of the first dynamic spring portion 12 and the second dynamic spring portion 13 in a third direction 23 perpendicular to the first direction 21 is connected to the dynamic spring base 14, and the other end is connected to the pushing element 19. The first dynamic spring portion 12 and the first static spring portion 15 are arranged at intervals in sequence in a second direction 22 perpendicular to the first direction 21 and the third direction 23, the second dynamic spring portion 13 and the second static spring portion 16 are arranged at intervals in sequence in the second direction 22, and the pushing element 19 can move along the second direction 22 to drive the first dynamic spring portion 12 and the second dynamic spring portion 13 to move along the second direction 22 toward or away from the first static spring portion 15 and the second static spring portion 16. Therefore, the layout of the first movable spring part 12, the second movable spring part 13 and the pushing element 19 can be reasonably designed, which is beneficial to the assembly of the first movable spring part 12 and the second movable spring part 13 on the pushing element 19. Meanwhile, it can also avoid the interference between the two movable spring parts or the two static spring parts during movement, thereby improving the performance stability of the relay 10.

[0052] In some embodiments, the pushing element 19 is provided with a first groove 1911 and a second groove 1921, the first groove 1911 and the second groove 1921 are spaced apart in the first direction 21, and the ends of the first dynamic spring portion 12 and the second dynamic spring portion 13 are respectively disposed in the first groove 1911 and the second groove 1921. The ends of the first dynamic spring portion 12 and the second dynamic spring portion 13 can be inserted into the first groove 1911 and the second groove 1921, and fixed to the pushing element 19 by any applicable process such as welding, gluing, riveting, bending, etc.

[0053] In some embodiments, the armature assembly 18 includes a main body 181, a magnet disposed in the main body 181, and a matching portion 182 connected to the main body 181. The main body 181 and the matching portion 182 can be made of a plastic or other material formed in one piece. The main body 181 is rotatably disposed on the base 11, and the rotation axis of the main body 181 relative to the base 11 is parallel to the thickness direction (first direction 21) of the base 11, and the matching portion 182 is embedded in the pushing element 19. The coil assembly 17 can drive the main body 181 to drive the matching portion 182 to rotate relative to the base 11 by means of the electromagnetic force between the coil assembly 17 and the magnet in the armature assembly 18, so that the matching portion 182 can drive the pushing element 19 to move along the second direction 22.

[0054] In the relay 10 provided in the present application, the means for making the overtravel of the first movable spring part 12 and the first static spring part 15 greater than that of the second movable spring part 13 and the second static spring part 16 are not limited, as long as the first movable spring part 12 and the first static spring part 15 can be brought into contact before the second movable spring part 13 and the second static spring part 16, and the second movable spring part 13 and the second static spring part 16 can be separated before the first movable spring part 12 and the first static spring part 15.

[0055] Combination Figure 5 and Figure 6 As shown, in some embodiments, in the second direction 22, at least a portion of the first slot 1911 and the second slot 1921 are offset, so that the installation positions of the first movable spring portion 12 and the second movable spring portion 13 on the pushing element 19 are offset. Thus, when the first static spring portion 15 and the second static spring portion 16 are aligned in the second direction 22, the installation positions of the first movable spring portion 12 and the second movable spring portion 13 on the pushing element 19 are offset in the second direction 22, so that the distance between the first movable spring portion 12 and the first static spring portion 15, and the distance between the second movable spring portion 13 and the second static spring portion 16 are unequal. For example, in the second direction 22, the distance between the first movable spring part 12 and the first static spring part 15 is smaller than the distance between the second movable spring part 13 and the second static spring part 16, so that when the pushing element 19 synchronously drives the first movable spring part 12 and the second static spring part 16 to move, the overtravel of the first movable spring part 12 and the first static spring part 15 is greater than the overtravel of the second movable spring part 13 and the second static spring part 16, and the contact and separation sequences of the two groups of movable spring parts and static spring parts are staggered.

[0056] refer to Figure 5As shown, in an embodiment in which the installation positions of the first movable spring portion 12 and the second movable spring portion 13 on the pushing element 19 are staggered in the second direction 22 so that the overtravels of the two groups of movable spring portions and the two groups of static spring portions are different, the pushing element 19 can be an integrated plastic material structure, that is, the first movable spring portion 12 and the second movable spring portion 13 are arranged on the same structure.

[0057] refer to Figure 6 As shown, in other embodiments, the pushing element 19 includes a first pushing card 191 and a second pushing card 192 arranged side by side in the first direction 21, and the first groove 1911 and the second groove 1921 are respectively arranged on the first pushing card 191 and the second pushing card 192. The first pushing card 191 and the second pushing card 192 are relatively fixed, and the installation position of the first movable spring part 12 on the first pushing card 191 and the installation position of the second movable spring part 13 on the second pushing card 192 are staggered in the second direction 22. The matching portion 182 is embedded in the first pushing card 191 and the second pushing card 192, and the rotation of the armature assembly 18 relative to the base 11 can drive the first pushing card 191 and the second pushing card 192 to move synchronously along the second direction 22, thereby driving the first movable spring part 12 and the second movable spring part 13 to move synchronously relative to the first static spring part 15 and the second static spring part 16. It is understandable that the first movable spring part 12 and the first static spring part 15 are used as arc burning and ablation ends, and the temperature is likely to be much higher than the second movable spring part 13 and the second static spring part 16 during the arc burning and ablation process. Therefore, the pushing element 19 is set as two pushing cards connected to the first movable spring part 12 and the second movable spring part 13 respectively. According to the different temperature requirements of the first movable spring part 12 and the second movable spring part 13, the first pushing card 191 can be set to a material with stronger temperature resistance than the second pushing card 192, for example, the thermal deformation temperature of the first pushing card 191 is higher than the thermal deformation temperature of the second pushing card 192. It can not only meet the temperature resistance requirements of the first movable spring part 12, but also help to reduce the overall material cost of the pushing element 19, thereby taking into account both performance reliability and low cost.

[0058] See also Figure 7 and Figure 8As shown, in other embodiments, when the pushing element 19 is provided with a first pushing card 191 and a second pushing card 192 arranged side by side in the first direction 21, the first pushing card 191 and the second pushing card 192 can move relative to each other along the second direction 22. Thus, in the initial state, the installation position of the first movable spring part 12 on the first pushing card 191 and the installation position of the second movable spring part 13 on the second pushing card 192 can be flush with each other in the second direction 22, and the first pushing card 191 and the second pushing card 192 are driven to move asynchronously by the armature assembly 18 to achieve the effect that the first movable spring part 12 and the first static spring part 15 are first contacted and then separated relative to the second movable spring part 13 and the second static spring part 16. Among them, the initial state can be the state of the relay 10 when the first movable spring part 12 is separated from the first static spring part 15, the second movable spring part 13 is separated from the second static spring part 16, and the coil is not energized.

[0059] Furthermore, combined with Figure 8 and Fig. 9 As shown, the matching portion 182 has a first matching surface 1821 and a second matching surface 1822 which are arranged opposite to each other in the second direction 22. The first matching surface 1821 is arranged toward the first static spring portion 15, and the second matching surface 1822 is arranged opposite to the first static spring portion 15. The first matching surface 1821 and the second matching surface 1822 may both be located on the portion of the matching portion 182 embedded in the pushing element 19. When the armature assembly 18 moves relative to the base 11, the matching portion 182 can abut against the inner wall surfaces of the first pushing card 191 and the second pushing card 192 through the first matching surface 1821, so as to drive the pushing element 19 to move toward the direction close to the first static spring portion 15, thereby driving the first movable spring portion 12 and the second movable spring portion 13 to move toward the direction close to the first static spring portion 15 and the second static spring portion 16. The mating portion 182 can abut the first push card 191 and the second push card 192 through the second mating surface 1822 to drive the pushing element 19 to move in a direction away from the first static spring part 15, thereby driving the first dynamic spring part 12 and the second dynamic spring part 13 to move in a direction away from the first static spring part 15 and the second static spring part 16.

[0060] Furthermore, refer to Fig. 9As shown, in some embodiments, in the initial state, the distance between the first mating surface 1821 and the first push card 191 is smaller than the distance between the first mating surface 1821 and the second push card 192. Therefore, when the armature assembly 18 moves relative to the base 11 and the mating portion 182 moves in the second direction 22 toward the first static spring portion 15, the mating portion 182 contacts the inner wall surface of the first push card 191 first and drives the first push card 191 to drive the first movable spring portion 12 to move toward the first static spring portion 15, and then contacts the inner wall surface of the second push card 192 and drives the second push card 192 to drive the second movable spring portion 13 to move toward the second static spring portion 16, so that the first movable spring portion 12 and the first static spring portion 15 contact first, and the second movable spring portion 13 and the second static spring portion 16 contact later.

[0061] For example, in some embodiments, in the initial state, the first mating surface 1821 abuts against the inner wall surface of the first push card 191 and is spaced apart from the inner wall surface of the second push card 192. Fig. 9 As shown, the portion of the first mating surface 1821 that is opposite to the first push card 191 can protrude toward the side where the first static spring portion 15 is located relative to the portion of the first mating surface 1821 that is opposite to the second push card 192, and abut against the inner wall surface of the first push card 191, so that the first mating surface 1821 is spaced from the inner wall surface of the second push card 192. Thus, while controlling the overtravel of the first moving spring portion 12 and the second moving spring portion 13 to be different, it is also beneficial to improve the assembly stability of the mating portion 182 and the first push card 191, and improve the structural reliability of the relay 10.

[0062] In some embodiments, in the initial state, the distance between the second mating surface 1822 and the first push card 191 is greater than the distance between the second mating surface 1822 and the second push card 192. It can be understood that when the pushing element 19 is driven by the armature assembly 18 to make the first movable spring part 12 contact with the first static spring part 15 and the second movable spring part 13 contact with the second static spring part 16, the first mating surface 1821 contacts the inner wall surfaces of both the first push card 191 and the second push card 192. Since in the initial state, the distance between the second mating surface 1822 and the first push card 191 is greater than the distance between the second mating surface 1822 and the second push card 192, when the first mating surface 1821 contacts the inner wall surfaces of both the first push card 191 and the second push card 192, the distance between the second mating surface 1822 and the inner wall surface of the first push card 191 is greater than the distance between the second mating surface 1822 and the inner wall surface of the second push card 192. Therefore, when the mating portion 182 moves in a direction away from the first static spring portion 15 driven by the main body 181, the second mating surface 1822 will first contact the inner wall surface of the second push card 192 and drive the second push card 192 to drive the second movable spring portion 13 to move in a direction away from the second static spring portion 16, and then contact the inner wall surface of the first push card 191 to drive the first push card 191 to drive the first movable spring portion 12 to move in a direction away from the first static spring portion 15, thereby achieving the effect of separating the second movable spring portion 13 and the second static spring portion 16 before the first movable spring portion 12 and the first static spring portion 15.

[0063] refer to Fig. 9As shown, in some embodiments, in the initial state, the second mating surface 1822 abuts against the inner wall surface of the second push card 192 and is spaced from the inner wall surface of the first push card 191. For example, a groove is concavely provided at the portion of the second mating surface 1822 opposite to the second push card 192 so that the second mating surface 1822 and the inner wall surface of the second push card 192 are spaced from each other in the second direction 22. When the mating portion 182 moves toward the direction approaching the first static spring portion 15 until the first mating surface 1821 abuts against the inner wall surfaces of both the first push card 191 and the second push card 192, the relative position of the mating portion 182 and the first push card 191 remains unchanged, while the relative position of the mating portion 182 and the second push card 192 changes, which is equivalent to the mating portion 182 moving a distance relative to the second push card 192 toward the direction approaching the first static spring portion 15. In this way, when the first movable spring part 12 and the first static spring part 15 are in contact and the second movable spring part 13 and the second static spring part 16 are in contact, the distance between the second mating surface 1822 and the first push card 191 is greater than the distance between the second mating surface 1822 and the second push card 192, thereby achieving the effect of separating the second movable spring part 13 and the second static spring part 16, and at the same time, it can also improve the stability and reliability of the structural cooperation between the mating part 182, the first push card 191 and the second push card 192 in the initial state.

[0064] It can be understood that the traditional means of controlling the overtravel of the movable spring assembly and the static spring assembly are usually to use contacts with different cap heights, or to control the push-pull heights of the two push cards to be different. The traditional setting involves assembly tolerances and dimensional changes of multiple parts, which can easily lead to large dispersion and affect the accuracy and reliability of the relay. The relay 10 provided in the present application controls the installation positions of the first movable spring part 12 and the second movable spring part 13 in the second direction 22 to be different, or controls the distances between the two sides of the mating part 182 and the first push card 191 and the second push card 192 to be different. There are fewer parts changes involved, simple assembly, low preparation cost, and it is beneficial to improve the performance reliability of the relay 10.

[0065] When the pushing element 19 is provided with a first pushing card 191 and a second pushing card 192, the first pushing card 191 and the second pushing card 192 can be fixedly connected to be relatively fixed, or slidably connected to be able to move relatively in the second direction 22. The connection method between the first pushing card 191 and the second pushing card 192 is not limited, and the first pushing card 191 and the second pushing card 192 can be connected to each other in the second direction 22. Fig.10 and Fig.11As shown, in some embodiments, the first push card 191 and the second push card 192 are assembled in a guide rail type insertion manner. For example, the edge of the first push card 191 close to the second push card 192 is provided with a plurality of first guide rail structures 1912 arranged in sequence along the second direction 22, and the edge of the second push card 192 is provided with a plurality of second guide rail structures 1922 arranged in sequence along the second direction 22. The end of the first guide rail structure 1912 protrudes toward the side where the second guide rail structure 1922 is located in the third direction 23, and the end of the second guide rail structure 1922 protrudes toward the side where the first guide rail structure 1912 is located in the third direction 23. The end of the first guide rail structure 1912 abuts against the second guide rail structure 1922 and is located on the side where the end of the second guide rail structure 1922 faces the second push card 192. The end of the second guide rail structure 1922 abuts against the first guide rail structure 1912 and is located on the side where the first guide structure 1912 faces the first push card 191, so that the first push card 191 and the second push card 192 are guide-type inserted through the first guide rail structure 1912 and the second guide rail structure 1922.

[0066] It should be noted that when the first push card 191 and the second push card 192 are connected by rail-type plug-in, the first push card 191 and the second push card 192 can be relatively fixed, for example, by an abutment structure in the second direction 22 or by any applicable method such as gluing, threaded connection, snap-on, etc., and the rail-type plug-in can simplify the assembly process and improve the structural reliability. Of course, the first guide rail structure 1912 and the second guide rail structure 1922 can also have a relative sliding stroke in the second direction 22, so that the first push card 191 and the second push card 192 can slide relative to each other in the second direction 22, and the specific design can be adapted according to the different means of controlling the overtravel of the first movable spring part 12 and the second movable spring part 13 in the relay 10.

[0067] See also Fig.12 and Fig.13As shown, in other embodiments, the first push card 191 and the second push card 192 are assembled in a hook-and-hook manner, for example, the first push card 191 is provided with a plurality of hanging rods 1913 arranged in sequence along the second direction 22, and the second push card 192 extends with a plurality of buckling structures 1923 arranged in sequence along the second direction 22, and the buckling structures 1923 are buckled on the hanging rods 1913 one by one, so that the first push card 191 and the second push card 192 are connected in a hook-and-hook manner. It should be noted that when the first push card 191 and the second push card 192 are connected in a hook-and-hook manner, the size of the hanging rod 1913 in the second direction 22 can be roughly adapted to the size of the buckling structure 1923 in the second direction 22, so that the buckling structure 1923 is limited on both sides in the second direction 22 by the first push card 191, so that the first push card 191 and the second push card 192 are relatively fixed. In other embodiments, the size of the hanging rod 1913 in the second direction 22 may also be larger than the size of the snap-fit ​​structure 1923 in the second direction 22, so that the snap-fit ​​structure 1923 can move along the second direction 22 on the hanging rod 1913, thereby enabling the first push card 191 and the second push card 192 to move relative to each other in the second direction 22. Specifically, the design can be adapted according to different means of controlling the overtravel of the first movable spring part 12 and the second movable spring part 13 in the relay 10.

[0068] In some embodiments, before assembling the first movable spring part 12 and the second movable spring part 13 to the pushing element 19, the first movable spring part 12 can be in contact with the first static spring part 15, and the second movable spring part 13 can be in contact with the second static spring part 16, and then one end of the first movable spring part 12 and the second movable spring part 13 can be deformed away from the first static spring part 15 and the second static spring part 16 to be assembled to the pushing element 19. Such an arrangement is conducive to improving the accuracy and reliability of the contact between the assembled movable spring part and the static spring part through early alignment, and can prevent foreign objects from falling and contaminating the contacts during the trial production stage, and is also conducive to the armature assembly 18 pushing the pushing element 19 later, so that the pushing element 19 applies a reaction force to the armature assembly 18 later, avoiding the weak area of ​​the electromagnetic force of the armature assembly 18 to improve the performance reliability of the relay 10.

[0069] 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.

[0070] 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: A contact assembly, comprising a first movable spring portion and a second movable spring portion electrically connected to each other, and a first static spring portion and a second static spring portion electrically connected to each other, wherein the first movable spring portion is opposite to the first static spring portion, and the second movable spring portion is opposite to the second static spring portion; and, The electromagnetic system is used to drive the first movable spring part and the second movable spring part to move in a direction close to or away from the first static spring part and the second static spring part, so that the first movable spring part contacts the first static spring part and the second movable spring part contacts the second static spring part, or the first movable spring part is separated from the first static spring part and the second movable spring part is separated from the second static spring part, and in the process in which the electromagnetic system drives the first movable spring part and the second movable spring part to move in a direction close to the first static spring part and the second static spring part, the first movable spring part and the first static spring part contact each other before the second movable spring part and the second static spring part, and in the process in which the electromagnetic system drives the first movable spring part and the second movable spring part to move in a direction away from the first static spring part and the second static spring part, the second movable spring part and the second static spring part are separated before the first movable spring part and the first static spring part.

2. The relay according to claim 1, characterized in that: The relay further includes a base, the second static spring part passes through the base, the first static spring part is arranged on the second static spring part, and the contact assembly further includes a moving spring base, the moving spring base passes through the base, the first moving spring part and the second moving spring part are arranged on the moving spring base.

3. The relay according to claim 2, characterized in that: The first moving spring part is provided with a first moving contact, the second moving spring part is provided with a second moving contact, the first static spring part is provided with a first static contact, the second static spring part is provided with a second static contact, the first static contact and the second static contact are arranged at intervals in the thickness direction of the base, the first moving spring part and the second moving spring part are arranged side by side in the thickness direction of the base, the first moving contact is opposite to the first static contact, and the second moving contact is opposite to the second static contact.

4. The relay according to claim 1, characterized in that: The relay also includes a base, the contact assembly and the electromagnetic system are arranged on the base, the electromagnetic system includes a coil assembly and an armature assembly, the relay also includes a pushing element, the coil assembly is arranged on the base, the armature assembly is rotatably arranged on the base, the pushing element is movably connected to the armature assembly, and the first movable spring part and the second movable spring part are both connected to the pushing element.

5. The relay according to claim 4, characterized in that: The pushing element is provided with a first groove and a second groove, the first groove and the second groove are spaced apart in the thickness direction of the base, the ends of the first movable spring part and the second movable spring part are respectively arranged in the first groove and the second groove, and driven by the armature assembly, the pushing element can move in a thickness direction perpendicular to the base.

6. The relay according to claim 5, characterized in that: The armature assembly includes a main body and a matching portion connected to the main body. The main body is rotatably disposed on the base, and the rotation axis of the main body relative to the base is parallel to the thickness direction of the base. The matching portion is embedded in the pushing element.

7. The relay according to claim 5, characterized in that: In the second direction, at least parts of the first groove and the second groove are offset, and the installation positions of the first movable spring part and the second movable spring part on the pushing element are offset, and the second direction is perpendicular to the thickness direction of the base and points from the first movable spring part to the first static spring part.

8. The relay according to claim 7, characterized in that: In the second direction, 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.

9. The relay according to claim 8, characterized in that: The pushing element includes a first pushing card and a second pushing card arranged side by side in a first direction parallel to the thickness direction of the base, the first groove and the second groove are respectively arranged on the first pushing card and the second pushing card, the first pushing card and the second pushing card are relatively fixed, and the armature assembly is used to drive the first pushing card and the second pushing card to move synchronously along the second direction.

10. The relay according to claim 6, characterized in that: The pushing element includes a first pushing card and a second pushing card arranged side by side in a first direction parallel to the thickness direction of the base, the first groove and the second groove are respectively arranged on the first pushing card and the second pushing card, the first pushing card and the second pushing card can move relative to each other along a second direction, the second direction is perpendicular to the thickness direction of the base, and is directed from the first dynamic spring part to the first static spring part.

11. The relay according to claim 10, characterized in that: The mating portion has a first mating surface and a second mating surface that are arranged opposite to each other in the second direction, and the first mating surface is arranged toward the first static spring part. The mating portion can abut the first push card and the second push card through the first mating surface to drive the first movable spring part and the second movable spring part to move in a direction close to the first static spring part and the second static spring part, and the mating portion can abut the first push card and the second push card through the second mating surface to drive the first movable spring part and the second movable spring part to move in a direction away from the first static spring part and the second static spring part.

12. The relay according to claim 11, characterized in that: In an initial state, a distance between the first mating surface and the first push card is smaller than a distance between the first mating surface and the second push card.

13. The relay according to claim 12, characterized in that: In the initial state, the first matching surface abuts against the inner wall surface of the first push card and is spaced apart from the inner wall surface of the second push card.

14. The relay according to claim 12, characterized in that: In the initial state, the distance between the second mating surface and the first push card is greater than the distance between the second mating surface and the second push card.

15. The relay according to claim 14, characterized in that: In the initial state, the second matching surface abuts against the inner wall surface of the second push card and is spaced apart from the inner wall surface of the first push card.

16. The relay according to claim 12, characterized in that: In the initial state, the first dynamic spring portion and the second dynamic spring portion are aligned in the second direction.

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