Movable spring part, movable spring armature component and relay

Abstract

The invention relates to a movable spring part, a movable spring armature component and a relay. The movable spring part comprises a movable spring body and a hinge. The movable spring body is used for being in contact with or separated from the static spring part and comprises a contact piece. The hinge is provided with a first end and a second end, the first end is used for being connected with the movable spring leading-out end, the second end is connected with the movable spring body, the hinge is used for providing counter force for the movable spring body, and the thickness of the hinge is smaller than that of the contact piece. In the action process of the relay, as the hinge is connected with the leading-out end of the movable spring, the hinge can twist in the moving process of the movable spring armature component, and the thickness of the hinge is smaller than that of the contact piece, so that the flexibility of the hinge can be ensured, the twisting times of the hinge are increased, the hinge is prevented from being broken, and the service life of the relay is prolonged. And meanwhile, the contact pressure of the contact can be ensured, and overlarge contact resistance and large contact rebound are avoided, so that the ablation loss of the contact can be avoided, and the service life of the relay is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of relays, and particularly to a moving contact part, a moving contact armature component and a relay. Background Art

[0002] With the rapid development of fields such as automotive intelligence, more and more devices such as semiconductor chips are applied in high-temperature environments. To meet the application requirements of devices such as semiconductor chips at high temperatures, during the production process, testing equipment is required to perform comprehensive performance tests on devices such as semiconductor chips in low-temperature, normal-temperature, and high-temperature environments of 125 °C. The signal switching module of this testing equipment requires high-temperature signal relays or high-frequency relays.

[0003] A relay generally includes a moving contact part and a stationary contact part. The moving contact part can move towards or away from the stationary contact part to achieve the on-off of the circuit. The moving contact part includes a moving contact piece, a moving contact, and a hinge connected to the moving contact piece. Common moving contact parts can ensure the service life of the hinge, but have insufficient contact pressure, too large contact resistance, and large contact bounce, which will accelerate the ablation loss of the contacts and thus lead to a decrease in the life capacity of the relay. Summary of the Invention

[0004] Based on this, it is necessary to provide a moving contact part, a moving contact armature component and a relay to improve the service life of the relay.

[0005] In a first aspect, the present application provides a moving contact part, including:

[0006] A moving contact body for contacting or separating from the stationary contact part, the moving contact body including a contact piece; and

[0007] A hinge having a first end and a second end, the first end being used for connecting to the moving contact lead-out end, the second end being connected to the moving contact body, the hinge being used to provide a reaction force for the moving contact body, and the thickness of the hinge being less than the thickness of the contact piece.

[0008] In the above-mentioned movable spring part, during the operation of the relay, since the hinge is connected to the lead-out end of the movable spring, the hinge will twist during the movement of the movable spring armature component. Therefore, the thickness of the hinge is smaller than the thickness of the contact piece, which can ensure the flexibility of the hinge, increase the number of twisting times of the hinge, and ensure that the hinge will not break, thereby increasing the life of the relay. At the same time, it can ensure the contact pressure of the contact point, avoid excessive contact resistance and large contact rebound, and avoid contact ablation loss, thereby increasing the life of the relay. In one embodiment, the movable spring body also includes a connecting piece, the connecting piece is connected to the contact piece, and the second end is connected to the connecting piece. In this way, the connecting piece provides a connection position for the hinge, which is convenient for the hinge to be connected to the movable spring body, and at the same time, the hinge is indirectly connected to the contact piece through the connecting piece, which can avoid the contact piece and the hinge from affecting each other during the movement.

[0009] In one embodiment, the contact sheet and the connecting sheet are arranged along a first direction, and the hinge is arranged on the side of the connecting sheet in a second direction, and the first direction intersects with the second direction. In this way, the contact sheet and the hinge are staggered, so that the contact sheet and the hinge can avoid mutual interference.

[0010] In one embodiment, the thickness of the connecting piece is equal to the thickness of the hinge. During the injection molding process of the movable spring armature component, since the thickness of the connecting piece is equal to the thickness of the hinge, it is convenient to seal the glue, and the injection mold does not need to be specially processed. During the processing of the movable spring piece, a special-shaped metal strip with a continuous groove in the middle can be directly stamped and formed. In addition, since the thickness of the connecting piece is equal to the thickness of the hinge, stress concentration caused by the thickness difference at the connection part of the connecting piece and the hinge can be avoided.

[0011] In one embodiment, there are two contact pieces, one of which is disposed on one side of the connecting piece in the first direction, and the other contact piece is disposed on the other side of the connecting piece in the first direction, and both contact pieces are connected to the connecting piece.

[0012] In one of the embodiments, the dynamic spring body further includes a dynamic contact, and the dynamic contact is disposed on the contact piece.

[0013] In a second aspect, the present application further provides a movable spring armature component, comprising:

[0014] armature;

[0015] The movable spring portion of any of the above; and

[0016] The insulator, the armature and the movable spring part are assembled into an integral part through the insulator.

[0017] In the above-mentioned moving contact armature component, during the operation of the relay, since the hinge is connected to the lead-out end of the moving contact, the hinge will twist during the movement of the moving contact armature component. Therefore, the thickness of the hinge is less than that of the contact piece, which can ensure the flexibility of the hinge, increase the number of twists of the hinge, ensure that the hinge will not break, thereby increasing the service life of the relay. At the same time, it can ensure the contact pressure of the contact point, avoid excessive contact resistance and large contact bounce, so as to avoid contact ablation loss, thereby improving the service life of the relay.

[0018] In one embodiment, the contact piece has a connecting end portion, the connecting end portion is arranged close to the second end portion, and the connecting end portion is located inside the insulator. In this way, the junction position of different thicknesses of the moving contact piece is arranged inside the insulator, which can reduce the process technical difficulty of the injection mold.

[0019] In one embodiment, the connecting end portion is provided with a through hole, and the through hole is filled with an insulator. In this way, the problem that the bonding position between the moving contact piece and the insulator is prone to cracking under long-term high-temperature use conditions can be solved, and the thermal life ability of the relay under ultra-high temperature conditions can be improved. In addition, since the thickness of the contact piece is relatively thick, a through hole is arranged at the connecting end portion, which can reduce the influence of the through hole on the load capacity.

[0020] In one embodiment, the moving contact armature component further includes a permanent magnet, and the permanent magnet is assembled with the armature and the moving contact part into an integral part through the insulator; and / or, there are two moving contact parts, both of the two moving contact parts extend along the first direction, one of the moving contact parts is arranged on one side of the armature in the second direction, and the other moving contact part is arranged on the other side of the armature in the second direction, and the first direction intersects with the second direction.

[0021] In one embodiment, the end portion of the insulator in the second direction is provided with an avoidance groove, and the hinge is arranged in the avoidance groove. In this way, interference between the insulator and the hinge is avoided, and at the same time, the structure of the moving contact armature component is made compact.

[0022] In a third aspect, the present application further provides a relay, including:

[0023] A housing, the housing is provided with a receiving cavity;

[0024] A base component, the base component is arranged in the receiving cavity; and

[0025] The moving contact armature component according to any one of the above, the moving contact armature component is arranged in the receiving cavity and installed on the base component.

[0026] For the above-mentioned relay, during the operation of the relay, since the hinge is connected to the moving spring lead-out end, the hinge will twist during the movement of the moving spring armature component. Therefore, the thickness of the hinge is less than that of the contact piece, which can ensure the flexibility of the hinge, increase the number of twists of the hinge, ensure that the hinge will not break, thereby increasing the service life of the relay. At the same time, it can ensure the contact pressure of the contact point, avoid excessive contact resistance and large contact bounce, thus avoiding contact ablation loss and improving the service life of the relay.

[0027] In one embodiment, the base component is provided with a first positioning portion, the moving spring armature component is provided with a second positioning portion, and the first positioning portion and the second positioning portion cooperate to form a swing fulcrum, so that the moving spring armature component and the swing fulcrum cooperate to form a seesaw structure.

[0028] In one embodiment, the base component includes a coil assembly, the coil assembly includes an iron core and a coil, the iron core includes a winding portion, a first pole portion, a second pole portion and a protruding portion, the winding portion is wound with the coil, the first pole portion and the second pole portion are respectively arranged at opposite ends of the winding portion, the protruding portion is arranged between the first pole portion and the second pole portion, and the first pole portion, the second pole portion and the protruding portion all extend from the winding portion towards the direction where the moving spring armature component is located. In this way, the magnetic resistance of the iron core is small. Under the condition of the same permanent magnet, the closing force between the armature and the iron core generated is greater, the magnetic field efficiency of the coil is improved, and the suction force is increased.

[0029] In one embodiment, the coil assembly further includes a first insulating member, a second insulating member and a third insulating member. The first insulating member is arranged on the protruding portion, the second insulating member is arranged on the first pole portion, and the third insulating member is arranged on the second pole portion. The first insulating member, the winding portion and the second insulating member enclose a first winding window, and the first insulating member, the winding portion and the third insulating member enclose a second winding window. The first winding window and the second winding window are both wound with the coil. In this way, the first insulating member, the second insulating member and the third insulating member can play a role in limiting the coil, which is beneficial to the coil being stably and reliably wound on the first winding window and the second winding window. At the same time, the first insulating member can be equivalent to a partition wall, which can reduce the scouring of the enameled wire of the coil during the injection molding process. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of a relay according to an embodiment of the present application.

[0031] Figure 2 It is Figure 1 a top view of the relay shown.

[0032] Figure 3 is Figure 2 the sectional view taken along A-A in

[0033] Figure 4 is Figure 1 the structural schematic diagram of the relay with the heat-conducting component removed as shown in

[0034] Figure 5 is Figure 4 the top view of the relay as shown in

[0035] Figure 6 is Figure 5 the sectional view taken along B-B in

[0036] Figure 7 is Figure 1 the exploded view of the relay structure as shown in

[0037] Figure 8 the structural schematic diagram of the assembled base component and the moving contact armature component in an embodiment of the present application.

[0038] Figure 9 the structural schematic diagram of the moving contact armature component in an embodiment of the present application.

[0039] Figure 10 is Figure 9 the top view of the moving contact armature component as shown in

[0040] Figure 11 is Figure 10 the sectional view taken along C-C in

[0041] Figure 12 is Figure 11 the partial enlarged schematic diagram at position A in

[0042] Figure 13 is Figure 9 the structural schematic diagram of the moving contact part as shown in

[0043] Figure 14 the structural schematic diagram of the base component in an embodiment of the present application.

[0044] Figure 15 is Figure 14 the exploded view of the base component structure as shown in

[0045] Figure 16 the structural schematic diagram of the coil assembly in an embodiment of the present application.

[0046] Figure 17 is Figure 16 the structural schematic diagram of the coil assembly from another perspective as shown in

[0047] Figure 18The structural schematic diagram of the iron core according to an embodiment of the present application.

[0048] Figure 19 The structural schematic diagram of the assembled iron core, armature and permanent magnet according to an embodiment of the present application.

[0049] Figure 20 is Figure 19 The front view of the assembled iron core, armature and permanent magnet shown in the figure.

[0050] Explanation of the reference numerals in the drawings:

[0051] 10. Base component; 11. Base body; 111. First side; 112. Second side; 113. First positioning portion; 12. Coil assembly; 121. Iron core; 1211. Winding portion; 1212. First pole portion; 1213. Second pole portion; 1214. Protrusion portion; 1215. First winding window; 1216. Second winding window; 1217. First lead-out end; 1218. Second lead-out end; 122. Coil; 123. First insulating member; 1231. First insulating body; 12311. Wire passing groove; 1232. Second insulating body; 124. Second insulating member; 125. Third insulating member; 13. Heat dissipation portion; 131. Heat dissipation opening; 1311. First heat dissipation opening; 1312. Second heat dissipation opening; 132. Heat conducting member; 14. Static reed portion; 141. Static contact; 15. Static reed lead-out foot; 151. First flanging; 16. Moving reed lead-out foot; 161. Second flanging; 17. Coil lead-out foot; 171. Third flanging; 20. Moving reed armature component; 21. Moving reed portion; 211. Moving reed body; 2111. Contact piece; 2112. Moving contact; 2113. Connecting end portion; 21131. Through hole; 2114. Connecting piece; 212. Hinge; 2121. First welding position; 2122. Second welding position; 2123. First end portion; 2124. Second end portion; 22. Armature; 23. Insulator; 231. Avoidance groove; 24. Permanent magnet; 30. Outer shell; 40. Shielding cover; 41. Grounding terminal; 411. Fourth flanging; 42. Cover body. Detailed implementation manners

[0052] To make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific implementation manners of the present application will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand 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 departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0053] Refer to Figure 1 and Figure 7, The relay provided by an embodiment of the present application includes a base member 10, a moving spring armature member 20, and a housing 30. The housing 30 is provided with a receiving cavity and a first opening, and the receiving cavity communicates with the first opening. The base member 10 and the moving spring armature member 20 are both disposed in the receiving cavity through the first opening, and the moving spring armature member 20 is disposed on the base member 10.

[0054] In one embodiment, referring to Figure 8 , the moving spring armature member 20 is movably disposed on the base member 10, and the moving spring armature member 20 can swing relative to the base member 10.

[0055] Further, referring to Figure 8 and Figure 14 , the base member 10 is provided with a first positioning portion 113, and the moving spring armature member 20 is provided with a second positioning portion. The first positioning portion 113 and the second positioning portion are positioned and matched to form a swing fulcrum, and the moving spring armature member 20 can swing with the swing fulcrum. It can be understood that the moving spring armature member 20 and the swing fulcrum cooperate to form a seesaw structure.

[0056] Optionally, referring to Figure 13 , the first positioning portion 113 is provided with a positioning protrusion, and the second positioning portion is provided with a positioning groove, and the positioning protrusion is disposed in the positioning groove.

[0057] Of course, in other embodiments, the first positioning portion 113 is provided with a positioning groove, and the second positioning portion is provided with a positioning protrusion.

[0058] In one embodiment, referring to Figure 9 , Figure 13 and Figure 14 , the moving spring armature member 20 includes a moving spring portion 21. The moving spring portion 21 includes a moving spring body 211 and a hinge 212. The moving spring body 211 is used to contact or separate from the static spring portion 14. The hinge 212 has a first end 2123 and a second end 2124. The first end 2123 is used to connect to the moving spring lead-out end, and the second end 2124 is connected to the moving spring body 211. The hinge 212 is used to provide a reaction force for the moving spring body 211.

[0059] Further, referring to Figure 13 , the moving spring body 211 includes a moving spring piece, and the second end 2124 is connected to the moving spring piece. The moving spring piece includes a contact piece 2111. It can be understood that the contact piece 2111 is a part of the moving spring piece.

[0060] Optionally, the moving spring body 211 only includes a moving spring piece. During use, the contact piece 2111 contacts or separates from the static spring portion 14.

[0061] Optionally, referring to Figure 13 and Figure 14The movable spring body 211 further includes a movable contact 2112, and the movable contact 2112 is disposed on the contact sheet 2111. When in use, the movable contact 2112 contacts or separates from the static contact 141 of the static spring part 14.

[0062] In the common movable spring part 21, the thickness of the hinge 212 is equal to the thickness of the contact piece 2111. Although this can ensure the service life of the hinge 212, the contact pressure is small, the contact resistance is too large, and the contact rebound is large, which will accelerate the contact ablation loss, thereby reducing the life of the relay. Therefore, in this embodiment, the thickness of the hinge 212 is less than the thickness of the contact piece 2111. It can be understood that the hinge 212 maintains the original thickness, and the contact piece 2111 is thickened on the basis of the original thickness.

[0063] During the operation of the relay, since the hinge 212 is connected to the lead-out end of the movable spring, the hinge 212 will twist during the movement of the movable spring armature component 20. Therefore, in this embodiment, the thickness of the hinge 212 is less than the thickness of the contact piece 2111. This can ensure the flexibility of the hinge 212, increase the number of twisting times of the hinge 212, and ensure that the hinge 212 will not break, thereby increasing the life of the relay. At the same time, it can ensure the contact pressure of the contact point, avoid excessive contact resistance and large contact rebound, thus avoiding contact ablation loss, thereby increasing the life of the relay.

[0064] In one embodiment, see Figure 13 The movable spring body 211 further includes a connecting piece 2114. The connecting piece 2114 is connected to the contact piece 2111, and the second end 2124 is connected to the connecting piece 2114. In this way, the connecting piece 2114 provides a connection position for the hinge 212, which facilitates the connection between the hinge 212 and the movable spring body 211. In addition, the hinge 212 is indirectly connected to the contact piece 2111 through the connecting piece 2114, so that the contact piece 2111 and the hinge 212 can avoid mutual influence during the movement.

[0065] In one embodiment, see Figure 13 The contact piece 2111 and the connecting piece 2114 are arranged along a first direction, and the hinge 212 is arranged on one side of the connecting piece 2114 in a second direction. The first direction intersects with the second direction, for example, the first direction may be perpendicular to the second direction. X represents the first direction, and Y represents the second direction. In this way, the contact piece 2111 and the hinge 212 are staggered, so that the contact piece 2111 and the hinge 212 can avoid mutual interference.

[0066] In one embodiment, see Figure 13, the thickness of the connecting piece 2114 is equal to the thickness of the hinge 212. In this way, during the injection molding process of the moving reed armature component 20, since the thickness of the connecting piece 2114 is equal to the thickness of the hinge 212, it is convenient for sealing the glue and the injection mold does not need to be specially treated. Moreover, during the processing of the moving reed, a special-shaped metal strip with continuous slots in the middle can be directly stamped into shape. In addition, since the thickness of the connecting piece 2114 is equal to the thickness of the hinge 212, it is possible to avoid stress concentration caused by a thickness difference at the connection part between the connecting piece 2114 and the hinge 212.

[0067] In one embodiment, referring to Figure 13 , there are two contact pieces 2111. One contact piece 2111 is arranged on one side of the connecting piece 2114 in the first direction, and the other contact piece 2111 is arranged on the other side of the connecting piece 2114 in the first direction. Both contact pieces 2111 are connected to the connecting piece 2114.

[0068] It should be noted that since the moving reed armature component 20 contacts or separates from the static reed part 14 in the form of a seesaw, when one of the contact pieces 2111 or the moving contact 2112 thereon contacts the static reed part 14, the other contact piece 2111 or the moving contact 2112 thereon separates from the static reed part 14.

[0069] In one embodiment, referring to Figure 13 , the hinge 212 is provided with a first welding position 2121 and a second welding position 2122. Both the first welding position 2121 and the second welding position 2122 are located on the same side of the armature 22. Specifically, both the first welding position 2121 and the second welding position 2122 are located on the side of the hinge 212 away from the connecting piece 2114. In this way, the connection strength between the moving reed part 21 and the moving reed lead-out end can be improved, so that the moving reed part 21 is not easily separated from the moving reed lead-out end, and the mechanical life of the relay is improved. At the same time, the electrical conductivity and heat dissipation can be ensured, and the temperature rise at the solder joint position can be reduced.

[0070] It should be noted that both the first welding position 2121 and the second welding position 2122 are electrically connected to the moving reed lead-out end.

[0071] Optionally, the first welding position 2121 and / or the second welding position 2122 are provided with welding grooves, and the groove walls of the welding grooves are arc-shaped.

[0072] In one embodiment, referring to Figure 9 and Figure 10 , the moving reed armature component 20 further includes an armature 22 and an insulator 23. The armature 22 and the moving reed part 21 are assembled into an integral part through the insulator 23.

[0073] Optionally, the insulator 23 is a plastic part, and the armature 22 and the moving spring part 21 are assembled into a whole by injection molding.

[0074] In one embodiment, referring to Figure 11 , Figure 12 and Figure 13 , in the first direction, the contact piece 2111 has a connecting end 2113, the connecting end 2113 is arranged close to the second end 2124, and the connecting end 2113 is located inside the insulator 23. In this way, the boundary position of different thicknesses of the moving spring piece is arranged inside the insulator 23, which can reduce the process technical difficulty of the injection mold.

[0075] In one embodiment, referring to Figure 12 and Figure 13 , the connecting end 2113 is provided with a through hole 21131, and the through hole 21131 is filled with the insulator 23. In this way, the problem that the joint position between the moving spring piece and the insulator 23 is prone to cracking under long-term high-temperature use conditions can be solved, and the thermal life ability of the relay under ultra-high temperature conditions can be improved. In addition, since the thickness of the contact piece 2111 is relatively thick, the through hole 21131 is arranged at the connecting end 2113, which can reduce the influence of the through hole 21131 on the load capacity.

[0076] Optionally, referring to Figure 13 , there are two through holes 21131 in the through hole 21131, and the two through holes 21131 are arranged in one-to-one correspondence with the connecting ends 2113 of the two contact pieces 2111.

[0077] Of course, in other embodiments, more than two through holes 21131 can also be arranged at the connecting end 2113, and the number of the through holes 21131 is not limited thereto.

[0078] In one embodiment, referring to Figure 6 , the moving spring armature component 20 further includes a permanent magnet 24. The permanent magnet 24 is arranged on the side of the armature 22 facing the base component 10. The permanent magnet 24 is assembled with the armature 22 and the moving spring part 21 through the insulator 23.

[0079] In one embodiment, referring to Figure 9 and Figure 10 , there are two moving spring parts 21, both of the two moving spring parts 21 extend along the first direction, and the two moving springs are respectively arranged on both sides of the armature 22 in the second direction.

[0080] In one embodiment, referring to Figure 10 , the end of the insulator 23 in the second direction is provided with an avoidance groove 231, and the hinge 212 is arranged in the avoidance groove 231. In this way, interference between the insulator 23 and the hinge 212 is avoided, and at the same time, the structure of the moving spring armature component 20 is made compact.

[0081] In one embodiment, referring to Figure 3 , Figure 14 and Figure 15 , the base component 10 includes a base body 11 and a coil assembly 12. The coil assembly 12 includes a coil 122, and the base body 11 wraps the coil 122.

[0082] Optionally, the base body 11 is a plastic part, and the insert molding process is used to process the base structure so that the base body 11 wraps the coil 122. In this way, it is beneficial to reduce the volume of the base structure.

[0083] However, when the coil 122 is wrapped in the base body 11, the heat generated by the energization of the coil 122 cannot be dissipated quickly. Therefore, in this embodiment, referring to Figure 3 , the base structure further includes a heat dissipation part 13. The heat dissipation part 13 is provided on at least one of the base body 11 and the coil assembly 12. The heat dissipation part 13 is correspondingly arranged with the coil assembly 12, and the heat energy generated by the coil 122 can be dissipated through the heat dissipation part 13.

[0084] Optionally, when a part of the structure of the coil assembly 12 is outside the base body 11, the heat dissipation part 13 can be provided at the part where the coil assembly 12 is exposed from the base body 11.

[0085] Optionally, when the coil assembly 12 is wrapped in the base body 11, the heat dissipation part 13 can be provided on the base body 11, or the heat dissipation part 13 can be provided on both the base body 11 and the coil assembly 12.

[0086] When the relay works, the energization of the coil 122 will generate heat. Since the base body 11 is provided with the heat dissipation part 13 and the heat dissipation part 13 is correspondingly arranged with the coil assembly 12, the heat generated by the energization of the coil 122 can be dissipated to the outside of the relay through the heat dissipation part 13. In this way, the temperature rise of the coil 122 can be reduced, and the short circuit of the coil 122 caused by the melting of the enameled wire film of the coil 122 can be avoided, so that the relay can meet the use requirements in a high-temperature environment.

[0087] In one embodiment, referring to Figure 6 , the heat dissipation part 13 is provided with a heat dissipation port 131, and the coil assembly 12 is in communication with the external air through the heat dissipation port 131. By providing the heat dissipation port 131, the heat dissipation port 131 establishes a direct channel between the coil assembly 12 and the external air, so that the hot air can quickly be discharged from the heat dissipation port 131, and at the same time, the air with a lower temperature outside can be replenished in time, forming a good air convection cycle to accelerate the dissipation of the heat generated by the coil assembly 12 to the surrounding environment, thereby effectively reducing the temperature of the coil assembly 12. By providing the heat dissipation port 131, the heat inside the coil assembly 12 can be directly in contact with the external air, further expanding the heat dissipation area, and thus improving the heat dissipation efficiency. In addition, the dependence on other complex heat dissipation components can be reduced, which is beneficial to reducing the manufacturing cost.

[0088] In one embodiment, referring to Figure 6 , the heat dissipation port 131 includes a first heat dissipation port 1311. The first heat dissipation port 1311 is provided on the base body 11, so that the coil assembly 12 communicates with the external air through the first heat dissipation port 1311, so that the heat generated by the coil 122 exchanges heat with the external air through the first heat dissipation port 1311.

[0089] In one embodiment, referring to Figure 6 , Figure 7 and Figure 8 , the base body 11 has opposite first side 111 and second side 112. The moving spring armature component 20 is provided on the first side 111, and the first heat dissipation port 1311 is provided on the second side 112. It can be understood that the first heat dissipation port 1311 and the moving spring armature component 20 are respectively provided on opposite sides of the base body 11, so as to avoid interference between the heat dissipation part 13 and the moving spring armature component 20. In addition, it can also avoid the hot air discharged through the first heat dissipation port 1311 from directly blowing on the moving spring armature component 20, reduce the influence of heat on the moving spring armature component 20, avoid the decrease of the electromagnetic performance of the moving spring armature component 20 due to high temperature, ensure the stability and reliability of the moving spring armature 22 assembly, and extend the service life of the moving spring armature component 20.

[0090] In one embodiment, referring to Figure 6 , the heat dissipation port 131 further includes a second heat dissipation port 1312. The second heat dissipation port 1312 is provided on the coil assembly 12, and the first heat dissipation port 1311 is communicated with the second heat dissipation port 1312. The heat generated by the coil 122 can be transmitted through the second heat dissipation port 1312, and then exchanges heat with the external air through the first heat dissipation port 1311, so that the heat can be quickly exported, which is beneficial to improving the heat dissipation efficiency.

[0091] In one embodiment, referring to Figure 3 and Figure 6 , the coil assembly 12 further includes an iron core 121 and an insulating part. The coil 122 is wound around the iron core 121, and the insulating part is provided on the iron core 121. By providing the insulating part on the iron core 121, the insulating part can play a role in blocking the coil 122, facilitating the coil 122 to be stably and reliably wound around the iron core 121.

[0092] It should be noted that the coil 122 can be directly wound around the iron core 121. Of course, in other embodiments, it can also be indirectly wound around the iron core 121 between the iron cores 121. Specifically, an insulating layer is provided between the iron core 121 and the coil 122.

[0093] In one embodiment, the second heat dissipation port 1312 is provided in the insulating part. In this way, the heat generated by the coil 122 can be heat-exchanged with the external air through the second heat dissipation port 1312, thereby preventing the performance of the insulating part from decreasing at high temperatures and ensuring the insulation performance of the insulating part is stable. At the same time, designing the second heat dissipation port 1312 in the insulating part can reduce the difficulty of processing the second heat dissipation port 1312.

[0094] In one embodiment, see Figure 3 The core 121 includes a winding portion 1211 , the winding portion 1211 is disposed in the base body 11 , and the coil 122 is wound around the winding portion 1211 .

[0095] Specifically, the winding portion 1211 is a strip-shaped structure, and the winding portion 1211 has two opposite ends. Optionally, the winding portion 1211 is a winding block or a winding shaft.

[0096] Further, see Figure 6 and Figure 7 The core 121 further includes a first pole portion 1212 and a second pole portion 1213. The first pole portion 1212 and the second pole portion 1213 are respectively disposed at opposite ends of the length direction of the winding portion 1211. The first pole portion 1212 and the second pole portion 1213 both extend from the winding portion 1211 toward the first side 111 of the seat body 11. It can be understood that the first pole portion 1212 and the second pole portion 1213 both extend toward the direction close to the movable spring armature component 20. Figure 18 The winding portion 1211, the first pole portion 1212 and the second pole portion 1213 are connected to form a U shape.

[0097] See also Figure 14 The ends of the first pole portion 1212 and the second pole portion 1213 facing away from the winding portion 1211 are both located outside the seat body 11 .

[0098] In one embodiment, see Figure 6 The core 121 further includes a protrusion 1214. The protrusion 1214 is disposed between the first pole portion 1212 and the second pole portion 1213, and the protrusion 1214 extends from the winding portion 1211 toward the first side 111 of the seat body 11. It can be understood that the protrusion 1214 extends from the winding portion 1211 toward the direction close to the movable spring armature component 20. Figure 19 and Figure 20 By providing the protrusion 1214 on the winding part 1211, the protrusion 1214 can reduce the magnetic circuit gap between the middle section of the iron core 121 and the permanent magnet 24, which is conducive to reducing the magnetic resistance of the magnetic circuit, improving the magnetic circuit efficiency, and at the same time improving the magnetic field efficiency between the armature 22 and the pole surface of the iron core 121, thereby improving the electromagnetic attraction between the armature 22 and the iron core 121. In addition, the utilization rate of stamping materials can also be improved.

[0099] Optionally, referring to Figure 20 , the convex portion 1214 is provided at the middle of the length direction of the winding portion 1211. The winding portion 1211, the first pole portion 1212, the second pole portion 1213 and the convex portion 1214 are connected to form a mountain shape. In one embodiment, referring to Figure 16 , the insulating portion includes a first insulating member 123, a second insulating member 124 and a third insulating member 125. The first insulating member 123 covers the convex portion 1214 and extends in a direction away from the convex portion 1214. The second insulating member 124 covers the first pole portion 1212 and extends in a direction away from the first pole portion 1212. The third insulating member 125 covers the second pole portion 1213 and extends in a direction away from the second pole portion 1213.

[0100] Further, referring to Figure 6 and Figure 16 , the first insulating member 123 is located at the middle of the length direction of the winding portion 1211. In this way, the lengths of the winding portions 1211 on both sides of the first insulating member 123 are equal or nearly equal, preventing the coil 122 wound on one side of the first insulating member 123 from being too long, thereby avoiding the problem of the enameled wire of the coil 122 breaking during the injection molding of the base 11.

[0101] Further, referring to Figure 16 , the first insulating member 123, the winding portion 1211 and the second insulating member 124 enclose a first winding window 1215, and the first insulating member 123, the winding portion 1211 and the third insulating member 125 enclose a second winding window 1216. Coils 122 are wound around both the first winding window 1215 and the second winding window 1216. In this way, the first insulating member 123, the second insulating member 124 and the third insulating member 125 can play a role in limiting the coils 122, facilitating the stable and reliable winding of the coils 122 on the first winding window 1215 and the second winding window 1216. At the same time, the first insulating member 123 can act as a partition wall, reducing the erosion of the enameled wire of the coil 122 during the injection molding process. In addition, since no insulating members are provided at both ends of the middle section of the iron core 121, the coils 122 are directly wound on the iron core 121, which can reduce the power consumption of the coils 122 while improving the suction force of the coils 122.

[0102] Optionally, the first insulating member 123, the second insulating member 124 and the third insulating member 125 are all plastic parts. The first insulating member 123 is provided on the convex portion 1214 by injection molding, the second insulating member 124 is provided on the first pole portion 1212 by injection molding, and the third insulating member 125 is provided on the second pole portion 1213 by injection molding.

[0103] In one embodiment, referring to Figure 6 and Figure 16, the first insulating member 123 is provided with wire grooves 12311 on both sides of the winding portion 1211 in the length direction. Optionally, the wire grooves 12311 are provided on the side of the first insulating member 123 close to the moving spring armature component 20. In this way, the wire grooves 12311 are used to support the enameled wire of the coil 122, avoiding the enameled wire of the coil 122 being scratched during the winding process or being washed and broken by the injection-molded melt of the base 11.

[0104] Furthermore, referring to Figure 16 , the coil assembly 12 further includes a first lead-out end 1217 and a second lead-out end 1218, and the first lead-out end 1217 and the second lead-out end 1218 are fixed on the second insulating member 124 by injection molding. Optionally, the first lead-out end 1217 and the second lead-out end 1218 are respectively arranged on both sides of the second insulating member 124 along the length direction of the winding portion 1211. Specifically, one end of the coil 122 is electrically connected to the first lead-out end 1217, and the other end of the coil 122 is electrically connected to the second lead-out end 1218.

[0105] It should be noted that the first lead-out end 1217 is the starting end of the lead-out, and the second lead-out end 1218 is the ending end of the lead-out. Or, the first lead-out end 1217 is the starting end of the lead-out, and the second lead-out end 1218 is the ending end of the lead-out.

[0106] In one embodiment, referring to Figure 6 , the first heat dissipation port 1311 is arranged opposite to the convex portion 1214. In this way, while ensuring the heat dissipation effect of the coil assembly 12, it can also avoid the exposure of the coil 122, which affects the use safety of the relay. In addition, it can also avoid the interference of the coil assembly 12 on the setting of the heat dissipation portion 13 (such as the heat conduction part).

[0107] In one embodiment, referring to Figure 6 and Figure 17 , the second heat dissipation port 1312 is arranged on the first insulating member 123, and the iron core 121 is communicated with the external air through the first heat dissipation port 1311 and the second heat dissipation port 1312. When the coil 122 is energized, the generated heat is transferred to the iron core 121, and the heat on the iron core 121 exchanges heat with the external air through the first heat dissipation port 1311 and the second heat dissipation port 1312, realizing the heat dissipation of the coil assembly 12. In addition, since the first insulating member 123 is located in the middle of the winding portion 1211 in the length direction and the second heat dissipation port 1312 is arranged on the first insulating member 123, it is equivalent to arranging the heat dissipation portion 13 in the middle of the coil 122, which can avoid the temperature of the coil 122 in the first winding window 1215 or the second winding window 1216 from being too high.

[0108] In one embodiment, referring to Figure 17, the first insulating member 123 includes a first insulating body 1231 and a second insulating body 1232. The first insulating body 1231 covers the convex portion 1214, and one end of the convex portion 1214 facing away from the winding portion 1211 is located outside the first insulating body 1231. The second insulating body 1232 is disposed on the side of the winding portion 1211 facing away from the convex portion 1214.

[0109] Further, referring to Figure 17 , the second heat dissipation port 1312 is provided on the second insulating body 1232, and the second heat dissipation port 1312 penetrates the second insulating body 1232 along the extending direction of the convex portion 1214. Optionally, referring to Figure 6 , the first heat dissipation port 1311 and the second heat dissipation port 1312 are disposed opposite to each other.

[0110] Since the iron core 121 has strong heat conduction ability, the heat generated by the energization of the coil 122 will be quickly transferred to the iron core 121. The iron core 121 is directly communicated with the external air through the first heat dissipation port 1311 and the second heat dissipation port 1312. In this way, the iron core 121 can perform heat exchange with the external air to reduce the temperature of the iron core 121, thereby reducing the temperature rise of the coil 122 and avoiding damage to the insulation of the enameled wire of the coil 122 due to excessive temperature of the coil 122, thus avoiding the failure of the function of the coil 122 and enabling the relay to meet the use requirements in a high-temperature environment.

[0111] In addition, during the injection molding process of the base 11, the first heat dissipation port 1311 and the second heat dissipation port 1312 cooperate to be used for the positioning of the coil assembly 12, improve the precision of the combined injection molding of the coil assembly 12 and the base 11, and at the same time improve the positioning precision of the pole surface of the iron core 121, which is beneficial to improving the consistency of the mechanical parameter moving stroke of the relay and improving the qualified rate of the relay.

[0112] In one embodiment, referring to Figure 3 , the heat dissipation portion 13 includes a heat conducting member 132. The heat conducting member 132 is thermally connected to the coil assembly 12. In this way, the heat conducting member 132 can quickly export the heat generated by the coil assembly 12, thereby reducing the temperature of the coil assembly 12.

[0113] In one embodiment, referring to Figure 3 and Figure 6, the heat conductive member 132 is arranged in the heat dissipation port 131, and the heat conductive member 132 is thermally connected to the iron core 121. Since the iron core 121 has a strong thermal conductivity, the heat generated by the coil 122 when it is energized will be quickly transferred to the iron core 121. Since the iron core 121 is thermally connected to the heat conductive member 132, the heat generated by the coil 122 can be transferred to the heat conductive member 132, and the heat conductive member 132 conducts the heat generated by the coil 122 to the external air for heat dissipation. In this way, the temperature rise of the coil 122 can be reduced, and the insulation of the enameled wire of the coil 122 caused by the excessive temperature of the coil 122 can be prevented from being damaged, thereby preventing the function of the coil 122 from failing, so that the relay can meet the use requirements in a high temperature environment.

[0114] In one embodiment, if the relay is a high-frequency relay, the heat conductor 132 is also used for grounding. During installation, the end of the heat conductor 132 away from the iron core 121 is welded to the PCB board for grounding, which can realize the grounding of the iron core 121, the armature 22 and other magnetic circuit parts, reduce internal crosstalk, and thus improve the transmission performance of high-frequency signals of the high-frequency relay.

[0115] Optionally, the heat-conducting member 132 is a heat-conducting metal block without magnetic conductivity. In this way, the heat-conducting metal block can play the role of heat conduction and grounding without the effect of magnetic conductivity.

[0116] In one embodiment, see Figure 1 If the relay is a high-frequency relay, the relay further includes a shielding cover 40. Specifically, the shielding cover 40 includes a cover body 42 and a grounding terminal 41. The cover body 42 is provided with a shielding cavity and a second opening connected to the shielding cavity. The base component 10, the spring armature component 20 and the housing 30 are all arranged in the shielding cavity. The grounding terminal 41 is arranged at the open end of the cover body 42. It can be understood that the open end of the cover body 42 refers to the end of the cover body 42 having the second opening. By setting the shielding cover 40, the shielding cover 40 can effectively isolate the interference of the external electric field, magnetic field or electromagnetic field, and improve the transmission performance of the relay for high-frequency signals.

[0117] In one embodiment, see Figure 1 and Figure 7 The spring-and-armature component 20 is disposed on the side of the base component 10 away from the second opening. In this way, the interference of the external electric field, magnetic field or electromagnetic field on the spring-and-armature component 20 through the second opening can be reduced, and the transmission performance of the relay for high-frequency signals can be further improved.

[0118] In one embodiment, see Figure 14 The relay further includes a static spring lead pin 15, a dynamic spring lead pin 16 and a coil lead pin 17, and the static spring lead pin 15, the dynamic spring lead pin 16 and the coil lead pin 17 are assembled into an integral part through the base body 11.

[0119] Further, see Figure 1and Figure 3 The static reed lead-out pin 15 includes a first flanging 151, the moving reed lead-out pin 16 includes a second flanging 161, the coil lead-out pin 17 includes a third flanging 171, and the first flanging 151, the second flanging 161, and the third flanging 171 are all arranged outside the shielding cover 40 through a first opening and a second opening. The grounding terminal 41 includes a fourth flanging 411, and the fourth flanging 411 is folded outward toward the shielding cavity. The end face of the heat conducting member 132 facing away from the iron core 121, the first flanging 151, the second flanging 161, the third flanging 171, and the fourth flanging 411 are all located in the same plane. With such an arrangement, it is convenient to perform grounding treatment on the relay, reduce the grounding difficulty, and at the same time improve the grounding stability.

[0120] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0121] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0122] In the present application, unless otherwise clearly specified and limited, if there are terms such as "mounted", "connected", "connected to", "fixed", etc., these terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0123] In this application, unless otherwise clearly defined and limited, if there is a description such as a first feature being "on" or "under" a second feature, its meaning may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" 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 has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0124] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0125] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0126] The above-described embodiments only represent several implementation manners of this application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can still be made, and these all belong to the protection scope of this application. Therefore, the protection scope of the patent of this application shall be subject to the appended claims.

Claims

1. A dynamic spring part, characterized in that: include: a movable spring body, the movable spring body being used to contact or separate from the static spring part, the movable spring body comprising a contact piece; and A hinge, wherein the hinge has a first end and a second end, wherein the first end is used to be connected to the lead end of the movable spring, and the second end is connected to the movable spring body, and the hinge is used to provide a reaction force for the movable spring body, and the thickness of the hinge is less than the thickness of the contact sheet.

2. The dynamic spring portion according to claim 1, characterized in that: The dynamic spring body also includes a connecting piece, the connecting piece is connected to the contact piece, and the second end is connected to the connecting piece.

3. The dynamic spring portion according to claim 2, characterized in that: The contact sheet and the connecting sheet are arranged along a first direction, the hinge is arranged at one side of the connecting sheet in a second direction, and the first direction intersects with the second direction.

4. The dynamic spring portion according to claim 2, characterized in that: The thickness of the connecting piece is equal to the thickness of the hinge.

5. The dynamic spring portion according to claim 2, characterized in that: There are two contact pieces, one of which is arranged on one side of the connecting piece in the first direction, and the other contact piece is arranged on the other side of the connecting piece in the first direction, and both of the contact pieces are connected to the connecting piece.

6. The movable spring portion according to any one of claims 1 to 5, characterized in that: The dynamic spring body also includes a dynamic contact point, and the dynamic contact point is arranged on the contact piece.

7. A movable spring armature component, characterized in that: include: armature; The movable spring portion according to any one of claims 1 to 6; as well as The insulator, the armature and the movable spring part are assembled into an integral part through the insulator.

8. The movable spring armature component according to claim 7, characterized in that: The contact piece has a connection end portion, the connection end portion is arranged close to the second end portion, and the connection end portion is located in the insulator.

9. The movable spring armature component according to claim 8, characterized in that: The connecting end is provided with a through hole, and the through hole is filled with an insulator.

10. The movable spring armature component according to claim 7, characterized in that: The movable spring armature component further includes a permanent magnet, which is assembled into an integral part with the armature and the movable spring part through the insulator; And / or, there are two movable spring parts, both of which extend along the first direction, one of which is arranged on one side of the armature in the second direction, and the other is arranged on the other side of the armature in the second direction, and the first direction intersects with the second direction.

11. The movable spring armature component according to any one of claims 7 to 10, characterized in that: An escape groove is provided at the end of the insulator in the second direction, and the hinge is arranged in the escape groove.

12. A relay, characterized in that: include: A housing, wherein the housing is provided with a receiving cavity; A base component, wherein the base component is disposed in the accommodating cavity; as well as The movable spring-armature component according to any one of claims 7 to 11, wherein the movable spring-armature component is arranged in the accommodating cavity and mounted on the base component.

13. The relay according to claim 12, characterized in that: The base component is provided with a first positioning portion, the movable spring armature component is provided with a second positioning portion, the first positioning portion cooperates with the second positioning portion to form a swing fulcrum, and the movable spring armature component cooperates with the swing fulcrum to form a seesaw structure.

14. The relay according to claim 12, characterized in that: The base component includes a coil assembly, which includes an iron core and a coil. The iron core includes a winding portion, a first pole portion, a second pole portion and a protruding portion. The coil is wound on the winding portion. The first pole portion and the second pole portion are respectively arranged at opposite ends of the winding portion. The protruding portion is arranged between the first pole portion and the second pole portion. The first pole portion, the second pole portion and the protruding portion all extend from the winding portion toward the direction where the movable spring armature component is located.

15. The relay according to claim 14, characterized in that: The coil assembly also includes a first insulating member, a second insulating member and a third insulating member, the first insulating member is arranged on the protruding portion, the second insulating member is arranged on the first pole portion, and the third insulating member is arranged on the second pole portion. The first insulating member, the winding portion and the second insulating member are arranged to form a first winding window, and the first insulating member, the winding portion and the third insulating member are arranged to form a second winding window, and the first winding window and the second winding window are both wound with the coil.

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