Insulating base and relay

Abstract

The invention discloses an insulating base and a relay. The insulating base is used for being installed in a bottom opening of a shell of the relay. The insulating base comprises a peripheral wall; the bottom wall is connected with the bottom of the peripheral wall; and the partition wall is connected with the peripheral wall and the bottom wall. The partition wall is used for dividing an internal space defined by the shell and the insulating base into an accommodating chamber and an arc extinguish chamber. Two grooves are formed in the inner side of the bottom wall of the arc extinguish chamber, so that an electric arc between a static contact and a movable contact of the relay can be pulled down into the grooves, and the pull-down length of the electric arc is increased. Therefore, in the invention, the electric arc between the static contact and the movable contact of the relay can be pulled down to a predetermined length, so that the electric arc can be quickly extinguished, and the magnetic quenching effect of the relay is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to an insulating base of a relay and a relay comprising the same. BACKGROUND

[0002] In the prior art, an electromagnetic relay generally comprises an insulating base, a movable contact, a fixed contact and a movable spring. The insulating base comprises a peripheral wall, a bottom wall and a partition wall. The partition wall separates the space inside the insulating base into an accommodating chamber and an arc extinguishing chamber. The movable contact, the fixed contact and the movable spring are arranged in the arc extinguishing chamber. The movable contact is fixed to the end of the movable spring, and in order to increase the length of the movable spring, the end of the movable spring is usually close to the bottom wall of the insulating base, which results in that the distance between the movable contact and the bottom wall of the insulating base is too short. In the magnetic blow-out arc extinguishing, the length of the arc between the movable contact and the fixed contact is limited, and it is difficult to be elongated to the predetermined length, which reduces the effect of the magnetic blow-out arc extinguishing, and even causes the arc extinguishing failure. Once the arc cannot be quickly extinguished, the movable contact and the fixed contact will be melted by the high temperature generated by the arc, and even the electromagnetic relay will explode, which seriously affects the safety production.

[0003] In addition, in the prior art, the relay further comprises a yoke, an armature, an insulator and a connecting piece. The armature is movably mounted on the yoke and can swing relative to the yoke between an attraction position and an initial position. One end of the armature is engaged into the insulator. One end of the connecting piece is engaged to the insulator. The insulator electrically separates the armature and the connecting piece. The movable spring of the relay is riveted to the other end of the connecting piece. In the prior art, since a separate connecting piece needs to be provided, this increases the number of components of the relay, resulting in cost increase. Moreover, riveting the movable spring and the connecting piece reduces the production efficiency.

[0004] In addition, in the prior art, the relay further comprises a reset spring for resetting the armature from the attraction position to the initial position. The reset spring is usually fixed to the partition wall of the insulating base. Since the insulating base is usually made of plastic, its mechanical strength and wear resistance are poor, and when the reset spring moves frequently, the partition wall of the insulating base is prone to breakage or wear. The plastic dust generated by the wear affects the electrical contact performance between the movable contact and the fixed contact. SUMMARY

[0005] The present application aims to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0006] According to one aspect of the present application, an insulating base is provided. The insulating base is used to mount into a bottom opening of a housing of a relay. The insulating base comprises a peripheral wall, a bottom wall connected to a bottom of the peripheral wall, and a partition wall connected to the peripheral wall and the bottom wall. The partition wall is used to divide an interior space defined by the housing and the insulating base into an accommodating chamber and an arc-extinguishing chamber. Two grooves are formed on an inner side of a bottom wall of the arc-extinguishing chamber, so that an arc between one stationary contact and one movable contact of the relay can be pulled down into the grooves to increase a length of the arc being pulled down.

[0007] According to one exemplary embodiment of the present application, the insulating base has a transverse direction, a longitudinal direction, and a height direction, the partition wall extends along the transverse direction and the height direction, and the two grooves are arranged side by side in the transverse direction.

[0008] According to another exemplary embodiment of the present application, the insulating base further comprises two magnet holders formed in the arc-extinguishing chamber for holding two arc-extinguishing magnets of the relay. The two magnet holders are opposite to each other in the transverse direction, and the two grooves are located between the two magnet holders.

[0009] According to another exemplary embodiment of the present application, the magnet holders are connected to the bottom wall and the partition wall, and a slot for inserting the arc-extinguishing magnet is formed in each of the two magnet holders, and the two arc-extinguishing magnets of the relay are adapted to be inserted into the slots of the two magnet holders, respectively.

[0010] According to another exemplary embodiment of the present application, the slot has an insertion opening located on an outer side of the bottom wall to allow the arc-extinguishing magnet to be inserted into the slot of the magnet holder via the insertion opening.

[0011] According to another exemplary embodiment of the present application, an inner wall surface of the slot is adapted to be interference-fitted with the arc-extinguishing magnet to fix the arc-extinguishing magnet in the slot.

[0012] According to another exemplary embodiment of the present application, the inner wall surface of the slot is clearance-fitted with the arc-extinguishing magnet, and a sealant is injected into the insertion opening of the slot to seal the insertion opening of the slot and fix the arc-extinguishing magnet in the slot.

[0013] According to another exemplary embodiment of the present application, the insulating base further comprises two terminal holders formed in the arc-extinguishing chamber for holding two stationary terminals of the relay, the two terminal holders are arranged side by side in the transverse direction and are spaced opposite to each other with the partition wall.

[0014] According to another exemplary embodiment of the present application, the terminal holding portions are connected to the peripheral wall and the bottom wall, and a terminal groove for inserting the stationary terminal is formed in each of the two terminal holding portions, and the two stationary terminals of the relay are adapted to be inserted into the terminal grooves of the two terminal holding portions, respectively.

[0015] According to another exemplary embodiment of the present application, an opening is formed in the bottom wall to communicate with the terminal groove to allow a portion of the stationary terminal to extend out of the insulating base through the opening in the bottom wall.

[0016] According to another aspect of the present application, a relay is provided. The relay includes a housing formed with a bottom opening, the aforementioned insulating base mounted into the bottom opening of the housing, two stationary contacts located in the arc chamber, two movable contacts located in the arc chamber for electrically contacting the two stationary contacts, respectively, and two arc extinguishing magnets located in the arc chamber for magnetically blowing out an arc between the stationary contacts and the movable contacts. Two grooves in the bottom wall of the arc chamber are located below the two movable contacts and between the two arc extinguishing magnets, respectively, such that an arc between one stationary contact and one movable contact of the relay can be pulled down into the groove by a magnetic field between the two arc extinguishing magnets.

[0017] According to another exemplary embodiment of the present application, the arc extinguishing magnets are inserted into the insertion slots of the magnet holding portions of the insulating base, and a sealant is injected into the insertion entrances of the insertion slots to seal the insertion entrances of the insertion slots and retain the arc extinguishing magnets in the insertion slots.

[0018] According to another exemplary embodiment of the present application, the arc extinguishing magnets are rectangular blocks and opposite to each other in the lateral direction of the insulating base, and the polarities of the mutually facing two sides of the two arc extinguishing magnets are opposite.

[0019] According to another exemplary embodiment of the present application, the relay further includes two stationary terminals inserted into the terminal grooves of the two terminal holding portions of the insulating base and extending out of the bottom wall of the insulating base, and the two stationary contacts are fixed to the two stationary terminals, respectively, to electrically connect with the two stationary terminals, respectively.

[0020] According to another exemplary embodiment of the present application, the relay further includes a movable terminal located in the arc chamber. The two movable contacts are fixed to two ends of the movable terminal to electrically connect with the movable terminal, and the two stationary terminals are electrically connected together via the movable terminal when the two movable contacts are moved to the closed position to electrically contact the two stationary contacts, respectively.

[0021] According to another exemplary embodiment of the present application, the relay further includes a yoke disposed in the accommodation chamber and fixed to an insulating base of the relay, a magnetic core disposed in the accommodation chamber and having a lower end fixed to the yoke, and an armature assembly. The armature assembly includes an armature movably mounted to the yoke so as to swing between an initial position and an attracted position with respect to the yoke, a movable spring adapted to be connected to the movable terminal for applying an elastic contact force to the movable contact, and an insulator to which the armature and the movable spring are fixed and electrically isolated.

[0022] According to another exemplary embodiment of the present application, the insulator is an injection molded member directly molded on the armature and the movable spring by an insert injection molding process, such that the armature, the movable spring, and the insulator are integrated.

[0023] According to another exemplary embodiment of the present application, the armature and the movable spring are respectively coupled to upper and lower sides of the insulator, and grooves and / or ribs are respectively formed on front and rear sides of the insulator to increase a creepage distance between the armature and the movable spring.

[0024] According to another exemplary embodiment of the present application, the movable spring includes a plate-shaped body and a plurality of bent wings connected to one end of the plate-shaped body and perpendicularly bent with respect to the plate-shaped body, and one end of the plate-shaped body and the plurality of bent wings are coupled to the insulator to increase a coupling force between the movable spring and the insulator.

[0025] According to another exemplary embodiment of the present application, the armature includes a plate-shaped body and a bent portion connected to one end of the plate-shaped body and perpendicularly bent with respect to the plate-shaped body, and the bent portion is coupled to the insulator, and the plate-shaped body is adapted to be movably mounted to the yoke.

[0026] According to another exemplary embodiment of the present application, the relay further includes a reset spring fixed to the yoke and pressed on the armature for resetting the armature from the attracted position to the initial position, and the magnetic core and the reset spring are respectively disposed on both sides of the yoke, the magnetic core is adapted to apply an electromagnetic attraction force to the armature, and the reset spring is adapted to apply an elastic reset force to the armature.

[0027] According to another exemplary embodiment of the present application, the yoke includes a vertical plate having a notch formed at an upper end thereof, and a horizontal plate connected to a lower end of the vertical plate, and a neck portion is formed on the plate-shaped body of the armature and movably coupled to the notch of the yoke.

[0028] According to another exemplary embodiment of the present application, the reset spring includes a vertical spring fixed to the vertical plate of the yoke and a pressing spring connected to the upper end of the vertical spring and bent by a predetermined angle with respect to the vertical spring, and a mounting hole allowing the vertical spring to pass therethrough is formed at one end of the plate-shaped main body of the armature, and the pressing spring is pressed on one side of the mounting hole of the armature to apply an elastic reset force to the armature.

[0029] According to another exemplary embodiment of the present application, a clamping groove is formed in the vertical plate of the yoke, and an elastic catch is formed in the vertical spring of the reset spring, and the elastic catch is engaged into the clamping groove to fix the reset spring to the yoke.

[0030] According to another exemplary embodiment of the present application, a vertical insertion groove is formed in the side of the partition wall of the insulating base facing the vertical plate of the yoke, and the vertical spring of the reset spring is inserted into the vertical insertion groove of the partition wall.

[0031] According to another exemplary embodiment of the present application, the reset spring further includes a limiting spring connected to the upper end of the vertical spring and positioned above the other side of the mounting hole of the armature, and the limiting spring is used to restrain the neck portion of the armature in the notch of the yoke to prevent the armature from being separated from the yoke.

[0032] According to another exemplary embodiment of the present application, the relay further includes a coil assembly. The coil assembly includes a coil bobbin having a central through-hole, a coil wound on the coil bobbin, and two coil terminals fixed to the coil bobbin and connected to both ends of the coil, respectively, and the magnetic core is installed in the central through-hole of the coil bobbin, and the upper end of the magnetic core is exposed from the coil bobbin to attract the armature.

[0033] According to another exemplary embodiment of the present application, when the coil is energized, the armature is attracted to the attraction position by the electromagnetic force of the magnetic core, and the two movable contacts are moved to the closed position in which the two movable contacts are electrically contacted with the two stationary contacts, respectively, and when the coil is de-energized, the electromagnetic force applied to the armature disappears, and the armature is reset to the initial position by the elastic reset force of the reset spring, and the two movable contacts are moved to the open position in which the two movable contacts are separated from the two stationary contacts, respectively.

[0034] According to another exemplary embodiment of the present application, a protrusion is formed on the outer side of the peripheral wall of the insulating base, a slot hole is formed on the peripheral wall of the housing, and the protrusion is engaged with the slot hole to fix the housing to the insulating base.

[0035] According to another exemplary embodiment of the present application, a positioning step is formed on the outer side of the peripheral wall of the insulating base, and the positioning step is abutted on the bottom end surface of the housing to position the housing in the height direction of the insulating base.

[0036] In the foregoing exemplary embodiments of the present application, the electric arc between one moving contact and one stationary contact of the relay can be pulled down by the magnetic field between the two arc extinguishing magnets to the groove on the bottom wall of the arc extinguishing chamber, thus, the length of the electric arc being pulled down can be increased, so that the electric arc can be quickly extinguished, and the magnetic blow-out arc extinguishing effect of the relay is greatly improved.

[0037] In the foregoing exemplary embodiments of the present application, the moving spring piece is directly engaged to the insulator, thus, the number of components of the relay is reduced, the structure of the relay is simplified, the cost of the relay is reduced, and the manufacturing efficiency of the relay is improved.

[0038] In the foregoing exemplary embodiments of the present application, the reset spring piece is fixed to the yoke. Thus, when the reset spring piece frequently moves, the insulating base is not affected, and breakage or wear does not occur, thus, the service life and reliability of the relay are improved.

[0039] Other objects and advantages of the present application will be readily understood and appreciated when the following description is read in conjunction with the accompanying drawings, in which: BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 FIG. 1 shows a perspective view of a relay according to an exemplary embodiment of the present application;

[0041] Figure 2 FIG. 2 shows a lateral cross-sectional view of the relay according to an exemplary embodiment of the present application;

[0042] Figure 3 FIG. 3 shows a longitudinal cross-sectional view of the insulating base and the housing of the relay according to an exemplary embodiment of the present application;

[0043] Figure 4 FIG. 4 shows a lateral cross-sectional view of the relay according to an exemplary embodiment of the present application, in which the housing is not shown;

[0044] Figure 5shows a longitudinal sectional view of a relay according to an exemplary embodiment of the present application, wherein the housing is not shown;

[0045] Figure 6 shows a plan sectional view of a relay according to an exemplary embodiment of the present application, wherein the movable contact and the fixed contact are in an electrically separated open position;

[0046] Figure 7 shows a plan sectional view of a relay according to an exemplary embodiment of the present application, wherein the movable contact and the fixed contact are in an electrically contacting closed position;

[0047] Figure 8 shows a perspective schematic view of a relay module according to an exemplary embodiment of the present application;

[0048] Figure 9 shows a sectional view of a relay module according to an exemplary embodiment of the present application;

[0049] Figure 10 shows an exploded schematic view of a relay module according to an exemplary embodiment of the present application;

[0050] Figure 11 shows an exploded sectional view of a relay module according to an exemplary embodiment of the present application;

[0051] Figure 12 shows an exploded schematic view of a relay armature assembly according to an exemplary embodiment of the present application;

[0052] Figure 13 shows an assembly schematic view of a yoke and a return spring of a relay according to an exemplary embodiment of the present application;

[0053] Figure 14 shows a perspective schematic view of a return spring of a relay according to an exemplary embodiment of the present application;

[0054] Figure 15 shows a sectional view of a return spring of a relay according to an exemplary embodiment of the present application;

[0055] Figure 16 shows a sectional view of a yoke and a return spring of a relay according to an exemplary embodiment of the present application;

[0056] Figure 17 shows a sectional view of a yoke, a return spring and an insulating base of a relay according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0057] The technical solutions of the present application will be further described below with reference to the accompanying drawings and in conjunction with the embodiments. In the description, identical or similar reference numerals indicate identical or similar components. The following description of the embodiments of the present application is intended to explain the general inventive concept of the present application and should not be construed as a limitation of the present application.

[0058] In addition, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. However, it will be apparent to one skilled in the art that one or more embodiments can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form to avoid obscuring the accompanying drawings.

[0059] According to one general inventive concept of the present application, an insulating base is provided. The insulating base is used to be mounted into a bottom opening of a housing of a relay. The insulating base comprises a peripheral wall, a bottom wall connected to a bottom of the peripheral wall, and a partition wall connected to the peripheral wall and the bottom wall. The partition wall is used to divide an inner space defined by the housing and the insulating base into an accommodating chamber and an arc-extinguishing chamber. Two grooves are formed on an inner side of a bottom wall of the arc-extinguishing chamber, so that an arc between one stationary contact and one movable contact of the relay can be pulled down into the grooves to increase a length of the arc being pulled down.

[0060] According to another general inventive concept of the present application, a relay is provided. The relay comprises a housing formed with a bottom opening, the aforementioned insulating base mounted into the bottom opening of the housing, two stationary contacts located in the arc-extinguishing chamber, two movable contacts located in the arc-extinguishing chamber for electrically contacting the two stationary contacts respectively, and two arc-extinguishing magnets located in the arc-extinguishing chamber for extinguishing an arc between the stationary contacts and the movable contacts in a magnetic blow manner. The two grooves on the bottom wall of the arc-extinguishing chamber are respectively located below the two movable contacts and between the two arc-extinguishing magnets, so that an arc between one stationary contact and one movable contact of the relay can be pulled down into the grooves by a magnetic field between the two arc-extinguishing magnets.

[0061] According to another general inventive concept of the present application, a relay armature assembly is provided. The relay armature assembly comprises an armature adapted to be movably mounted to a yoke of a relay, capable of swinging between an initial position and an attracted position relative to the yoke, a movable spring blade adapted to be connected to a movable contact assembly of the relay, for applying an elastic contact force to the movable contact assembly, and an insulator, the armature and the movable spring blade being fixed to the insulator and electrically isolated by the insulator.

[0062] According to another general inventive concept of the present application, there is provided a relay module. The relay module includes a yoke fixed to an insulating base of the relay; a magnetic core having a lower end fixed to the yoke; the aforementioned relay armature assembly having an armature movably mounted to the yoke, capable of oscillating between an attraction position in contact with an upper end of the magnetic core and an initial position separated from the upper end of the magnetic core; and a return spring fixed to the yoke and pressed against the armature for returning the armature from the attraction position to the initial position, the magnetic core and the return spring being arranged on both sides of the yoke, respectively, the magnetic core for applying an electromagnetic attraction force to the armature, and the return spring for applying an elastic return force to the armature.

[0063] According to another general inventive concept of the present application, there is provided a relay. The relay includes a housing having a bottom opening; the aforementioned relay module disposed in the housing; an insulating base mounted into the bottom opening of the housing; and two stationary contact assemblies fixed to the insulating base for electrically contacting the movable contact assembly.

[0064] Figure 1 A perspective view of a relay according to an exemplary embodiment of the present application is shown; Figure 2 A transverse sectional view of a relay according to an exemplary embodiment of the present application is shown; Figure 3 A longitudinal sectional view of a relay insulating base 1 and a housing 2 according to an exemplary embodiment of the present application is shown; Figure 4 A transverse sectional view of a relay according to an exemplary embodiment of the present application is shown, wherein the housing 2 is not shown; Figure 5 A longitudinal sectional view of a relay according to an exemplary embodiment of the present application is shown, wherein the housing 2 is not shown; Figure 6 A planar sectional view of a relay according to an exemplary embodiment of the present application is shown, wherein the movable contact 4a and the stationary contact 5a are in an open position in which they are electrically separated; Figure 7 A planar sectional view of a relay according to an exemplary embodiment of the present application is shown, wherein the movable contact 4a and the stationary contact 5a are in a closed position in which they are in electrical contact.

[0065] As Figures 1 to 7As shown, in an exemplary embodiment of the present invention, an insulating base 1 is disclosed. The insulating base 1 is used to be installed in the bottom opening of the housing 2 of a relay. The insulating base 1 includes: a peripheral wall 11, a bottom wall 12, and a partition wall 13. The bottom wall 12 is connected to the bottom of the peripheral wall 11. The partition wall 13 is connected to the peripheral wall 11 and the bottom wall 12. The partition wall 13 is used to separate the internal space defined by the housing 2 and the insulating base 1 into a receiving chamber 10a and an arc extinguishing chamber 10b. Two grooves 101 are formed on the inner side of the bottom wall 12 of the arc extinguishing chamber 10b, so that the arc 1c between a static contact 5a and a movable contact 4a of the relay can be pulled down into the grooves 101 to increase the length of the arc 1c pulled down.

[0066] like Figures 1 to 7 As shown, in the illustrated embodiment, the arc 1c between one movable contact 4a and one stationary contact 5a of the relay can be pulled downward by the magnetic field between the two arc-extinguishing magnets 6 into the groove 101 on the bottom wall 12 of the arc-extinguishing chamber 10b. This increases the length of the arc 1c pulled downward, allowing it to be extinguished quickly, greatly improving the relay's magnetic arc-extinguishing effect. Furthermore, the arc between the other stationary contact 5a and the other movable contact 4a of the relay is stretched upward by the magnetic field between the two arc-extinguishing magnets 6. Since there is more space for this upward stretch, this upwardly stretched arc can also be extinguished quickly.

[0067] like Figures 1 to 7 As shown, in the illustrated embodiment, the insulating base 1 has a transverse direction X, a longitudinal direction Y and a height direction Z, the partition wall 13 extends along the transverse direction X and the height direction Z, and the two grooves 101 are arranged side by side in the transverse direction X.

[0068] like Figures 1 to 7 As shown, in the illustrated embodiment, the insulating base 1 further includes two magnet retaining portions 14. The two magnet retaining portions 14 are formed in the arc extinguishing chamber 10b and are used to retain the two arc extinguishing magnets 6 of the relay. The two magnet retaining portions 14 are opposite in the horizontal direction X, and the two grooves 101 are located between the two magnet retaining portions 14.

[0069] like Figures 1 to 7 As shown, in the illustrated embodiment, the magnet holding portion 14 is connected to the bottom wall 12 and the partition wall 13, and slots 14a for inserting the arc extinguishing magnets 6 are respectively formed in the two magnet holding portions 14, and the two arc extinguishing magnets 6 of the relay are suitable for being respectively inserted into the slots 14a of the two magnet holding portions 14.

[0070] like Figures 1 to 7 As shown, in the illustrated embodiment, the slot 14 a has an insertion opening on the outer side of the bottom wall 12 to allow the arc-extinguishing magnet 6 to be inserted into the slot 14 a of the magnet holding portion 14 via the insertion opening.

[0071] like Figures 1 to 7 As shown, in the illustrated embodiment, the inner wall surface of the slot 14 a is adapted to be interference fit with the arc-extinguishing magnet 6 , so as to fix the arc-extinguishing magnet 6 in the slot 14 a .

[0072] like Figures 1 to 7 As shown, in another exemplary embodiment of the present invention, the inner wall surface of the slot 14a is gap-matched with the arc-extinguishing magnet 6, and sealant 6a is poured into the insertion port of the slot 14a to seal the insertion port of the slot 14a and fix the arc-extinguishing magnet 6 in the slot 14a.

[0073] like Figures 1 to 7 As shown, in the illustrated embodiment, the insulating base 1 further includes two terminal retaining portions 15. The two terminal retaining portions 15 are formed in the arc extinguishing chamber 10b and are used to retain the two static terminals 5 of the relay. The two terminal retaining portions 15 are arranged side by side in the transverse direction X and are spaced apart from each other by the partition wall 13.

[0074] like Figures 1 to 7 As shown, in the illustrated embodiment, the terminal holding portion 15 is connected to the peripheral wall 11 and the bottom wall 12, and terminal grooves 15a for inserting the static terminals 55 are respectively formed in the two terminal holding portions 15, and the two static terminals 5 of the relay are suitable for being respectively inserted into the terminal grooves 15a of the two terminal holding portions 15.

[0075] like Figures 1 to 7 As shown, in the illustrated embodiment, an opening communicating with the terminal groove 15 a is formed on the bottom wall 12 to allow a portion of the static terminal 55 to extend from the insulating base 1 through the opening on the bottom wall 12 .

[0076] Figure 8 A perspective schematic diagram showing a relay module according to an exemplary embodiment of the present invention; Figure 9 A cross-sectional view showing a relay module according to an exemplary embodiment of the present invention; Figure 10 An exploded schematic diagram showing a relay module according to an exemplary embodiment of the present invention; Figure 11 An exploded cross-sectional view showing a relay module according to an exemplary embodiment of the present invention; Figure 12 An exploded schematic diagram showing a relay armature assembly according to an exemplary embodiment of the present invention; Figure 13 A schematic diagram showing an assembly of a yoke 75 and a reset spring 74 of a relay according to an exemplary embodiment of the present invention; Figure 14 A perspective schematic diagram showing a reset spring 74 of a relay according to an exemplary embodiment of the present invention; Figure 15 A cross-sectional view showing a reset spring 74 of a relay according to an exemplary embodiment of the present invention; Figure 16A cross-sectional view showing a yoke 75 and a reset spring 75 of a relay according to an exemplary embodiment of the present invention; Figure 17 A cross-sectional view showing a yoke 75 , a reset spring 74 , and an insulating base 1 of a relay according to an exemplary embodiment of the present invention is shown.

[0077] like Figures 1 to 17 As shown, in another exemplary embodiment of the present invention, a relay is disclosed, which can be a DC electromagnetic relay. The relay includes: a housing 2, an insulating base 1, two stationary contacts 5a, two movable contacts 4a, and two arc-extinguishing magnets 6. The housing 2 has a bottom opening. The insulating base 1 is mounted in the bottom opening of the housing 2. The two stationary contacts 5a are located in an arc-extinguishing chamber 10b. The two movable contacts 4a are located in the arc-extinguishing chamber 10b and are respectively in electrical contact with the two stationary contacts 5a. The two arc-extinguishing magnets 6 are located in the arc-extinguishing chamber 10b and are used to extinguish the arc 1c between the stationary contacts 5a and the movable contacts 4a by magnetic blowout. Two grooves 101 on the bottom wall 12 of the arc-extinguishing chamber 10b are respectively located below the two movable contacts 4a and between the two arc-extinguishing magnets 6, so that the arc 1c between one stationary contact 5a and one movable contact 4a of the relay can be drawn down into the grooves 101 by the magnetic field between the two arc-extinguishing magnets 6. Therefore, the downward length of the arc 1c can be increased, allowing it to be extinguished quickly, greatly improving the relay's magnetic arc-extinguishing effect. Furthermore, the arc between the relay's other static contact 5a and the other movable contact 4a is stretched upward by the magnetic field between the two arc-extinguishing magnets 6. Because the upward stretching space is larger, the upwardly stretched arc can also be extinguished quickly.

[0078] like Figures 1 to 17 As shown, in the illustrated embodiment, the arc-extinguishing magnet 6 is inserted into the slot 14a of the magnet holding portion 14 of the insulating base 1, and sealant 6a is poured into the insertion port of the slot 14a to seal the insertion port of the slot 14a and retain the arc-extinguishing magnet 6 in the slot 14a.

[0079] like Figures 1 to 17 As shown, in the illustrated embodiment, the arc-extinguishing magnets 6 are in the shape of rectangular blocks and are opposite to each other in the transverse direction X of the insulating base 1 , and the polarities of the two sides of the two arc-extinguishing magnets 6 facing each other are opposite.

[0080] like Figures 1 to 17 As shown, in the illustrated embodiment, the relay further includes two static terminals 5. The two static terminals 5 are respectively inserted into the terminal slots 15a of the two terminal holding portions 15 of the insulating base 1 and extend from the bottom wall 12 of the insulating base 1. Two static contacts 5a are respectively fixed to the two static terminals 5 to be electrically connected thereto.

[0081] like Figures 1 to 17As shown in the illustrated embodiment, the relay further includes a movable terminal 44. The movable terminal 44 is located in the arc-extinguishing chamber 10b. Two movable contacts 4a are fixed to both ends of the movable terminal 44, respectively, to be electrically connected with the movable terminal 44. The two stationary terminals 5 are electrically connected together via the movable terminal 44 when the two movable contacts 4a are moved to a closed position to be in electrical contact with the two stationary contacts 5a, respectively.

[0082] As shown in the illustrated embodiment, the relay further includes a magnetic core 76, a yoke 75 and an armature assembly. The magnetic core 76 is disposed in the housing chamber 10a. The yoke 75 is disposed in the housing chamber 10a and fixed to the magnetic core 76. The armature assembly includes an armature 73, a movable spring 71 and an insulator 72. The armature 73 is movably mounted to the yoke 75 to be swingable relative to the yoke 75 between an initial position and an attracted position. The movable spring 71 is adapted to be connected to the movable terminal 4 for applying an elastic contact force to the movable contacts 4a. The armature 73 and the movable spring 71 are fixed to and electrically isolated by the insulator 72. Figures 1 to 17 As shown in the illustrated embodiment, the insulator 72 is a molded piece directly molded on the armature 73 and the movable spring 71 by an insert injection molding process, such that the armature 73, the movable spring 71 and the insulator 72 become an integral piece.

[0083] Figures 1 to 17 As shown in the illustrated embodiment, the armature 73 and the movable spring 71 are joined to upper and lower sides of the insulator 72, respectively, and grooves 72a and / or protruding ribs are formed on front and rear sides of the insulator 72, respectively, to increase a creepage distance between the armature 73 and the movable spring 71.

[0084] As shown in the illustrated embodiment, the movable spring 71 includes a sheet-like main body 710 and a plurality of bent wings 711. The plurality of bent wings 711 are connected to one end of the sheet-like main body 710 and perpendicularly bent relative to the sheet-like main body 710. One end of the sheet-like main body 710 and the plurality of bent wings 711 are joined into the insulator 72 to increase a joining force between the movable spring 71 and the insulator 72. Figures 1 to 17 As shown in the illustrated embodiment, the armature 73 includes a plate-like main body 730 and a bent portion 731. The bent portion 731 is connected to one end of the plate-like main body 730 and perpendicularly bent relative to the plate-like main body 730. The bent portion 731 is joined into the insulator 72, and the plate-like main body 730 is adapted to be movably mounted to the yoke 75.

[0085] Figures 1 to 17 As shown in the illustrated embodiment, the armature 73 includes a plate-like main body 730 and a bent portion 731. The bent portion 731 is connected to one end of the plate-like main body 730 and perpendicularly bent relative to the plate-like main body 730. The bent portion 731 is joined into the insulator 72, and the plate-like main body 730 is adapted to be movably mounted to the yoke 75.

[0086] As shown in the illustrated embodiment, the armature 73 includes a plate-like main body 730 and a bent portion 731. The bent portion 731 is connected to one end of the plate-like main body 730 and perpendicularly bent relative to the plate-like main body 730. The bent portion 731 is joined into the insulator 72, and the plate-like main body 730 is adapted to be movably mounted to the yoke 75. Figures 1 to 17 As shown in the illustrated embodiment, the armature 73 includes a plate-like main body 730 and a bent portion 731. The bent portion 731 is connected to one end of the plate-like main body 730 and perpendicularly bent relative to the plate-like main body 730. The bent portion 731 is joined into the insulator 72, and the plate-like main body 730 is adapted to be movably mounted to the yoke 75.

[0087] Figures 1 to 17 ​​​As shown, in the illustrated embodiment, the relay further includes a reset spring 74. The reset spring 74 is fixed to a yoke 75 and presses against the armature 73, resetting the armature 73 from the engaged position to the initial position. A magnetic core 76 and the reset spring 74 are disposed on either side of the yoke 75. The magnetic core 76 applies an electromagnetic attraction to the armature 73, while the reset spring 74 applies an elastic reset force to the armature 73.

[0088] like Figures 1 to 17 As shown, in the illustrated embodiment, the yoke 75 includes a vertical plate 750 and a horizontal plate 751. A notch 753 is formed at the upper end of the vertical plate 750. The horizontal plate 751 is connected to the lower end of the vertical plate 750. The lower end of the magnetic core 76 is fixed to the horizontal plate 751 of the yoke 75. A neck 73a is formed on the plate-shaped body 730 of the armature 73, and the neck 73a is movably engaged in the notch 753 of the yoke 75.

[0089] like Figures 1 to 17 As shown, in the illustrated embodiment, the yoke 75 is fixed in the slot of the insulating base 1 in the horizontal direction X and the vertical direction Y, the yoke 75 is fixed to the bottom wall 12 of the insulating base 1 in the height direction Z by glue, and the magnetic core 76 is riveted into the riveting hole of the horizontal plate 751 of the yoke 75.

[0090] like Figures 1 to 17 As shown, in the illustrated embodiment, the reset spring 74 includes a vertical spring 740 and a pressing spring 741. The vertical spring 740 is fixed to the vertical plate 750 of the yoke 75. The pressing spring 741 is connected to the upper end of the vertical spring 740 and is bent at a predetermined angle relative to the vertical spring 740. A mounting opening 73b is formed at one end of the plate-shaped body 730 of the armature 73 to allow the vertical spring 740 to pass through. The pressing spring 741 presses on one side of the mounting opening 73b of the armature 73 to apply an elastic reset force to the armature 73.

[0091] like Figures 1 to 17 As shown, in the illustrated embodiment, a slot 75a is formed on the vertical plate 750 of the yoke 75, and an elastic buckle 74a is formed on the vertical spring piece 740 of the reset spring piece 74, and the elastic buckle 74a is engaged in the slot 75a to fix the reset spring piece 74 to the yoke 75.

[0092] like Figures 1 to 17 As shown, in the illustrated embodiment, a vertical slot 13a is formed on one side of the vertical plate 750 of the partition wall 13 of the insulating base 1 facing the yoke 75, and the vertical spring piece 740 of the reset spring piece 74 is inserted into the vertical slot 13a of the partition wall 13.

[0093] like Figures 1 to 17As shown, in the illustrated embodiment, the reset spring 74 further includes a limiting spring 742, which is connected to the upper end of the vertical spring 740 and is located above the other side of the mounting opening 73b of the armature 73. The limiting spring 742 is used to constrain the neck 73a of the armature 73 in the recess 753 of the yoke 75 to prevent the armature 73 from separating from the yoke 75.

[0094] like Figures 1 to 17 As shown, in the illustrated embodiment, the relay further includes a coil assembly. The coil assembly includes: a coil bobbin 78, a coil 77 and two coil terminals 77a. The coil bobbin 78 has a central through hole. The coil 77 is wound on the coil bobbin 78. The two coil terminals 77a are fixed to the coil bobbin 78 and are respectively connected to the two ends of the coil 77. The coil terminals 77a extend from the bottom wall 12 of the insulating base 1. The magnetic core 76 is installed in the central through hole of the coil bobbin 78, and the upper end of the magnetic core 76 is exposed from the coil bobbin 78 for adsorbing the armature 73.

[0095] like Figures 1 to 17 As shown, in the illustrated embodiment, when the coil 77 is energized, the armature 73 is attracted to the closed position by the electromagnetic attraction of the magnetic core 76, and the two movable contacts 4a are moved to the closed position, where they are in electrical contact with the two stationary contacts 5a. When the coil 77 is de-energized, the electromagnetic attraction applied to the armature 73 disappears, and the armature 73 is reset to its initial position by the elastic restoring force of the reset spring 74, and the two movable contacts 4a are moved to the open position, where they are separated from the two stationary contacts 5a.

[0096] like Figures 1 to 17 As shown, in the illustrated embodiment, the peripheral wall 11 of the insulating base 1 is inserted into the shell 2 through the bottom opening of the shell 2, a protrusion 1a is formed on the outer side of the peripheral wall 11 of the insulating base 1, and a slot 2a is formed on the peripheral wall of the shell 2, and the protrusion 1a is engaged with the slot 2a to fix the shell 2 to the insulating base 1.

[0097] like Figures 1 to 17 As shown, in the illustrated embodiment, a positioning step 1b is formed on the outer side of the peripheral wall 11 of the insulating base 1, and the positioning step 1b abuts against the bottom end surface 2b of the shell 2 to position the shell 2 in the height direction Z of the insulating base 1.

[0098] like Figures 1 to 17As shown, in another exemplary embodiment of the present invention, a relay armature assembly is also disclosed. The relay armature assembly includes an armature 73, a movable spring 71, and an insulator 72. The armature 73 is adapted to be movably mounted on a yoke 75 of a relay and is capable of swinging relative to the yoke 75 between an initial position and an engaged position. The movable spring 71 is adapted to be connected to a movable contact assembly of the relay to apply a resilient contact force to the movable contact assembly. The armature 73 and the movable spring 71 are fixed to and electrically isolated from each other by the insulator 72.

[0099] like Figures 1 to 17 As shown, in the illustrated embodiment, the insulator 72 is an injection molded part that is directly molded on the armature 73 and the movable reed 71 through an insert injection molding process, so that the armature 73, the movable reed 71 and the insulator 72 become an integral part.

[0100] like Figures 1 to 17 As shown, in the illustrated embodiment, the armature 73 and the movable spring 71 are respectively joined to the upper and lower sides of the insulator 72, and grooves 72a and / or ribs are respectively formed on the front and rear sides of the insulator 72 to increase the creepage distance between the armature 73 and the movable spring 71.

[0101] like Figures 1 to 17 As shown, in the illustrated embodiment, the movable spring 71 includes a sheet-like body 710 and a plurality of bent wings 711. The plurality of bent wings 711 are connected to one end of the sheet-like body 710 and are bent perpendicularly relative to the sheet-like body 710. One end of the sheet-like body 710 and the plurality of bent wings 711 are joined to the insulator 72 to increase the joining force between the movable spring 71 and the insulator 72.

[0102] like Figures 1 to 17 As shown, in the illustrated embodiment, through holes engaging with the insulator 72 are respectively formed on one end of the sheet-like body 710 and the bent wing 711 , so as to further increase the engagement force between the movable spring piece 71 and the insulator 72 .

[0103] like Figures 1 to 17 As shown, in the illustrated embodiment, a rivet hole 712 suitable for engaging with the rivet column 41 on the moving contact assembly is formed on the other end of the sheet-like body 710 of the moving spring piece 71, so that the moving contact assembly can be riveted to the other end of the sheet-like body 710 of the moving spring piece 71.

[0104] like Figures 1 to 17As shown, in the illustrated embodiment, the armature 73 includes a plate-shaped body 730 and a bent portion 731. The bent portion 731 is connected to one end of the plate-shaped body 730 and is bent perpendicularly relative to the plate-shaped body 730. The bent portion 731 is engaged with the insulator 72, and the plate-shaped body 730 is adapted to be movably mounted on the yoke 75. A through-hole is formed in the bent portion 731 for engaging with the insulator 72 to further enhance the engagement force between the armature 73 and the insulator 72.

[0105] like Figures 1 to 17 As shown, in another exemplary embodiment of the present invention, a relay module is also disclosed. The relay module includes: a magnetic core 76, a yoke 75, a relay armature assembly and a reset spring 74. The yoke 75 is fixed to the insulating base 1. The lower end of the magnetic core 76 is fixed to the yoke 75. The armature 73 of the relay armature assembly is movably mounted on the yoke 75 and can swing between an attracted position in contact with the upper end of the magnetic core 76 and an initial position separated from the upper end of the magnetic core 76. The reset spring 74 is fixed to the yoke 75 and pressed on the armature 73 to reset the armature 73 from the attracted position to the initial position. The magnetic core 76 and the reset spring 74 are respectively arranged on both sides of the yoke 75. The magnetic core 76 is used to apply electromagnetic attraction to the armature 73, and the reset spring 74 is used to apply elastic reset force to the armature 73.

[0106] like Figures 1 to 17 As shown, in the illustrated embodiment, the yoke 75 includes a vertical plate 750 and a horizontal plate 751. A notch 753 is formed at the upper end of the vertical plate 750. The horizontal plate 751 is connected to the lower end of the vertical plate 750. The lower end of the magnetic core 76 is fixed to the horizontal plate 751 of the yoke 75. A neck 73a is formed on the plate-shaped body 730 of the armature 73, and the neck 73a is movably engaged in the notch 753 of the yoke 75.

[0107] like Figures 1 to 17 As shown, in the illustrated embodiment, the yoke 75 is fixed in the slot of the insulating base 1 in the horizontal direction X and the vertical direction Y, the yoke 75 is fixed to the bottom wall 12 of the insulating base 1 in the height direction Z by glue, and the magnetic core 76 is riveted into the riveting hole of the horizontal plate 751 of the yoke 75.

[0108] like Figures 1 to 17 As shown, in the illustrated embodiment, the reset spring 74 includes a vertical spring 740 and a pressing spring 741. The vertical spring 740 is fixed to the vertical plate 750 of the yoke 75. The pressing spring 741 is connected to the upper end of the vertical spring 740 and is bent at a predetermined angle relative to the vertical spring 740. A mounting opening 73b is formed at one end of the plate-shaped body 730 of the armature 73 to allow the vertical spring 740 to pass through. The pressing spring 741 presses on one side of the mounting opening 73b of the armature 73 to apply an elastic reset force to the armature 73.

[0109] As shown in FIG. 1, in the illustrated embodiment, the yoke 75 includes a vertical plate 750 and a notch 753. The vertical plate 750 is connected to the bottom plate 751. The notch 753 is formed in the vertical plate 750. The notch 753 is used to constrain the neck 73a of the armature 73, so as to prevent the armature 73 from being separated from the yoke 75. Figures 1 to 17 As shown in FIG. 1, in the illustrated embodiment, the reset spring 74 includes a vertical spring 740 and a elastic buckle 74a. The vertical spring 740 is connected to the bottom plate 751 of the yoke 75. The elastic buckle 74a is formed in the vertical spring 740 and is engaged into a clamping slot 75a formed in the vertical plate 750 of the yoke 75, so as to fix the reset spring 74 to the yoke 75.

[0110] As shown in FIG. 1, in the illustrated embodiment, the reset spring 74 further includes a limiting spring 742. The limiting spring 742 is connected to the upper end of the vertical spring 740 and is located above the other side of the mounting port 73b of the armature 73. The limiting spring 742 is used to constrain the neck 73a of the armature 73 in the notch 753 of the yoke 75, so as to prevent the armature 73 from being separated from the yoke 75. Figures 1 to 17 As shown in FIG. 1, in the illustrated embodiment, the relay module further includes a coil assembly. The coil assembly includes a coil frame 78, a coil 77 and two coil terminals 77a. The coil frame 78 has a central through hole. The coil 77 is wound on the coil frame 78. The two coil terminals 77a are fixed to the coil frame 78 and are respectively connected to the two ends of the coil 77. The magnetic core 76 is installed in the central through hole of the coil frame 78, and the upper end of the magnetic core 76 is exposed outside the coil frame 78 for attracting the armature 73.

[0111] Figures 1 to 17 As shown in FIG. 1, in the illustrated embodiment, the relay further includes a coil assembly. The coil assembly includes a coil frame 78, a coil 77 and two coil terminals 77a. The coil frame 78 has a central through hole. The coil 77 is wound on the coil frame 78. The two coil terminals 77a are fixed to the coil frame 78 and are respectively connected to the two ends of the coil 77. The magnetic core 76 is installed in the central through hole of the coil frame 78, and the upper end of the magnetic core 76 is exposed outside the coil frame 78 for attracting the armature 73.

[0112] As shown in FIG. 1, in the illustrated embodiment, the relay further includes a coil assembly. The coil assembly includes a coil frame 78, a coil 77 and two coil terminals 77a. The coil frame 78 has a central through hole. The coil 77 is wound on the coil frame 78. The two coil terminals 77a are fixed to the coil frame 78 and are respectively connected to the two ends of the coil 77. The magnetic core 76 is installed in the central through hole of the coil frame 78, and the upper end of the magnetic core 76 is exposed outside the coil frame 78 for attracting the armature 73. Figures 1 to 17 As shown in FIG. 1, in the illustrated embodiment, the relay further includes a coil assembly. The coil assembly includes a coil frame 78, a coil 77 and two coil terminals 77a. The coil frame 78 has a central through hole. The coil 77 is wound on the coil frame 78. The two coil terminals 77a are fixed to the coil frame 78 and are respectively connected to the two ends of the coil 77. The magnetic core 76 is installed in the central through hole of the coil frame 78, and the upper end of the magnetic core 76 is exposed outside the coil frame 78 for attracting the armature 73.

[0113] Figures 1 to 17 As shown in FIG. 1, in the illustrated embodiment, the relay further includes a coil assembly. The coil assembly includes a coil frame 78, a coil 77 and two coil terminals 77a. The coil frame 78 has a central through hole. The coil 77 is wound on the coil frame 78. The two coil terminals 77a are fixed to the coil frame 78 and are respectively connected to the two ends of the coil 77. The magnetic core 76 is installed in the central through hole of the coil frame 78, and the upper end of the magnetic core 76 is exposed outside the coil frame 78 for attracting the armature 73.

[0114] As shown in FIG. 1, in the illustrated embodiment, the relay further includes a coil assembly. The coil assembly includes a coil frame 78, a coil 77 and two coil terminals 77a. The coil frame 78 has a central through hole. The coil 77 is wound on the coil frame 78. The two coil terminals 77a are fixed to the coil frame 78 and are respectively connected to the two ends of the coil 77. The magnetic core 76 is installed in the central through hole of the coil frame 78, and the upper end of the magnetic core 76 is exposed outside the coil frame 78 for attracting the armature 73. Figures 1 to 17 ​​As shown, in the illustrated embodiment, when the armature 73 is attracted to the closed position, the two movable contacts 4a are moved to the closed position where they are in electrical contact with the two stationary contacts 5a. When the armature 73 is reset to the initial position, the two movable contacts 4a are moved to the open position where they are separated from the two stationary contacts 5a.

[0115] like Figures 1 to 17 As shown, in the illustrated embodiment, the insulating base 1 includes a peripheral wall 11, a bottom wall 12, and a partition wall 13. The bottom wall 12 is connected to the bottom of the peripheral wall 11. The partition wall 13 is connected to the peripheral wall 11 and the bottom wall 12. The partition wall 13 divides the interior space defined by the housing 2 and the insulating base 1 into a receiving chamber 10a and an arc extinguishing chamber 10b. The coil assembly and yoke 75 are disposed in the receiving chamber 10a, and the movable contact assembly and the stationary contact assembly are disposed in the arc extinguishing chamber 10b.

[0116] like Figures 1 to 17 As shown, in the illustrated embodiment, the relay further includes two arc-extinguishing magnets 6 disposed within the arc-extinguishing chamber 10b. Two grooves 101 are formed on the inner side of the bottom wall 12 of the arc-extinguishing chamber 10b. The grooves 101 are located below the two movable contacts 4a and between the two arc-extinguishing magnets 6. This allows the arc 1c between a stationary contact 5a and a movable contact 4a of the relay to be drawn downward into the grooves 101 by the magnetic field between the two arc-extinguishing magnets 6, thereby increasing the length of the drawn arc 1c.

[0117] like Figures 1 to 17 As shown, in the illustrated embodiment, the insulating base 1 further includes two magnet holding portions 14, which are formed in the arc extinguishing chamber 10b. Slots 14a are formed in the magnet holding portions 14, and the two arc extinguishing magnets 6 are respectively inserted into the slots 14a of the two magnet holding portions 14.

[0118] like Figures 1 to 17 As shown, in the illustrated embodiment, the slot 14 a has an insertion opening located on the outer side of the bottom wall 12 , and the arc-extinguishing magnet 6 is inserted into the slot 14 a of the magnet holding portion 14 via the insertion opening.

[0119] like Figures 1 to 17 As shown, in the embodiment shown in the figure, the insulating base 1 further includes two terminal holding portions 15, which are formed in the arc extinguishing chamber 10b. Terminal grooves 15a are formed in the terminal holding portions 15, and the two static terminals 5 are respectively inserted into the terminal grooves 15a of the two terminal holding portions 15.

[0120] like Figures 1 to 17As shown in the illustrated embodiment, the peripheral wall 11 of the insulating base 1 is inserted into the housing 2 via the bottom opening of the housing 2, a protrusion 1a is formed on the outer side of the peripheral wall 11 of the insulating base 1, a slot hole 2a is formed on the peripheral wall of the housing 2, and the protrusion 1a is engaged with the slot hole 2a to fix the housing 2 to the relay insulating base 1.

[0121] As shown in the illustrated embodiment, a vertical slot 13a is formed on the side of the partition wall 13 of the insulating base 1 facing the vertical plate 750 of the yoke 75, and the vertical spring 740 of the reset spring 74 is inserted into the vertical slot 13a of the partition wall 13. Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to 17 Figures 1 to

[0122] Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can make improvements, and the structures described in various embodiments can be freely combined without structural or principle conflicts, and these changes shall fall within the protection scope of the present application.

[0123] Although the present application is described in conjunction with the drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present application, and cannot be understood as a limitation of the present application.

[0124] Although some embodiments of the general concept of the present application have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present application, and the scope of the present application is limited by the claims and their equivalents.

[0125] It should be noted that the wording "comprising" does not exclude other elements or steps, and the wording "a" or "one" does not exclude a plurality. In addition, any reference signs in the claims should not be understood as limiting the scope of the present application.​

Claims

1. An insulating base for mounting in a bottom opening of a housing (2) of a relay, characterized in that The insulating base (1) comprises: peripheral wall (11); a bottom wall (12) connected to the bottom of the peripheral wall (11); and A partition wall (13) connected to the peripheral wall (11) and the bottom wall (12), The partition wall (13) is used to separate the internal space defined by the housing (2) and the insulating base (1) into a receiving chamber (10a) and an arc extinguishing chamber (10b). Two grooves (101) are formed on the inner side of the bottom wall (12) of the arc extinguishing chamber (10b), so that an arc (1c) between a static contact (5a) and a movable contact (4a) of the relay can be pulled down into the grooves (101), thereby increasing the length of the arc (1c) that is pulled down.

2. The insulating base according to claim 1, wherein: The insulating base (1) has a transverse direction (X), a longitudinal direction (Y), and a height direction (Z); the partition wall (13) extends along the transverse direction (X) and the height direction (Z); and the two grooves (101) are arranged side by side in the transverse direction (X).

3. The insulating base according to claim 2, wherein: Also includes: Two magnet holding portions (14) are formed in the arc extinguishing chamber (10b) and are used to hold two arc extinguishing magnets (6) of the relay. The two magnet holding portions (14) are opposite to each other in the transverse direction (X), and the two grooves (101) are located between the two magnet holding portions (14).

4. The insulating base according to claim 3, wherein: The magnet holding portion (14) is connected to the bottom wall (12) and the partition wall (13), and slots (14a) for inserting the arc-extinguishing magnets (6) are respectively formed in the two magnet holding portions (14). The two arc-extinguishing magnets (6) of the relay are suitable for being respectively inserted into the slots (14a) of the two magnet holding portions (14).

5. The insulating base according to claim 4, characterized in that: The slot (14a) has an insertion opening on the outer side of the bottom wall (12) to allow the arc-extinguishing magnet (6) to be inserted into the slot (14a) of the magnet holding portion (14) via the insertion opening.

6. The insulating base according to claim 4, characterized in that: The inner wall surface of the slot (14a) is suitable for interference fit with the arc-extinguishing magnet (6) to fix the arc-extinguishing magnet (6) in the slot (14a).

7. The insulating base according to claim 5, characterized in that: The inner wall surface of the slot (14a) is gap-matched with the arc-extinguishing magnet (6), and a sealant (6a) is poured into the insertion opening of the slot (14a) to seal the insertion opening of the slot (14a) and fix the arc-extinguishing magnet (6) in the slot (14a).

8. The insulating base according to claim 1, wherein: Also includes: Two terminal holding portions (15) are formed in the arc extinguishing chamber (10b) and are used to hold two static terminals (5) of the relay. The two terminal holding portions (15) are arranged side by side in the transverse direction (X) and are spaced apart from and opposed to the partition wall (13).

9. The insulating base according to claim 8, characterized in that: The terminal holding portion (15) is connected to the peripheral wall (11) and the bottom wall (12), and terminal slots (15a) for inserting the static terminals (5) are respectively formed in the two terminal holding portions (15). The two static terminals (5) of the relay are suitable for being inserted into the terminal slots (15a) of the two terminal holding portions (15).

10. The insulating base according to claim 9, characterized in that: An opening communicating with the terminal groove (15a) is formed on the bottom wall (12) to allow a portion of the static terminal (5) to extend from the insulating base (1) through the opening on the bottom wall (12).

11. A relay, characterized in that: include: A housing (2) is formed with a bottom opening; The insulating base (1) according to any one of claims 1 to 10, mounted in the bottom opening of the housing (2); Two static contacts (5a) located in the arc extinguishing chamber (10b); Two moving contacts (4a) are located in the arc extinguishing chamber (10b) and are used to electrically contact the two stationary contacts (5a) respectively; and Two arc-extinguishing magnets (6) are located in the arc-extinguishing chamber (10b) and are used to extinguish the arc (1c) between the static contact (5a) and the movable contact (4a) in a magnetic blowing manner. Two grooves (101) on the bottom wall (12) of the arc extinguishing chamber (10b) are respectively located below the two moving contacts (4a) and between the two arc extinguishing magnets (6), so that the arc (1c) between the static contact (5a) and the moving contact (4a) can be pulled down into the grooves (101) by the magnetic field between the two arc extinguishing magnets (6).

12. The relay according to claim 11, characterized in that: The arc-extinguishing magnet (6) is inserted into a slot (14a) of a magnet holding portion (14) of the insulating base (1), and a sealant (6a) is poured into an insertion opening of the slot (14a) to seal the insertion opening of the slot (14a) and retain the arc-extinguishing magnet (6) in the slot (14a).

13. The relay according to claim 11, wherein: The arc-extinguishing magnets (6) are in the shape of rectangular blocks and are opposite to each other in the transverse direction (X) of the insulating base (1); the polarities of the two sides of the two arc-extinguishing magnets (6) facing each other are opposite.

14. The relay according to claim 11, wherein: Also includes: Two static terminals (5) are respectively inserted into the terminal grooves (15a) of the two terminal holding parts (15) of the insulating base (1) and extend from the bottom wall (12) of the insulating base (1). The two static contacts (5a) are respectively fixed to the two static terminals (5) to be electrically connected to the two static terminals (5).

15. The relay according to claim 11, wherein: Also includes: A movable terminal (4) (4), located in the arc extinguishing chamber (10b), The two moving contacts (4a) are respectively fixed to both ends of the moving terminal (4) (4) to be electrically connected to the moving terminal (4) (4), When the two moving contacts (4a) are moved to a closed position in electrical contact with the two stationary contacts (5a), respectively, the two stationary terminals (5) are electrically connected together via the moving terminal (4).

16. The relay according to claim 15, characterized in that Also includes: a yoke (75) disposed in the accommodation chamber (10a) and fixed to the insulating base (1); a magnetic core (76) disposed in the accommodation chamber (10a) and having its lower end fixed to the yoke (75); and Armature assembly, comprising: An armature (73) is movably mounted on the yoke (75) and is capable of swinging relative to the yoke (75) between an initial position and an engaged position; a movable spring (71), adapted to be connected to the movable terminal (4) and used to apply elastic contact force to the movable contact (4a); and An insulator (72), the armature (73) and the movable reed (71) are fixed to the insulator (72) and are electrically isolated by the insulator (72).

17. The relay according to claim 16, characterized in that: The insulator (72) is an injection molded part that is directly molded on the armature (73) and the movable spring (71) through an embedded injection molding process, so that the armature (73), the movable spring (71) and the insulator (72) become an integrated part.

18. The relay according to claim 16, wherein: The armature (73) and the movable spring (71) are respectively joined to the upper and lower sides of the insulator (72), and grooves (72a) and / or ribs are respectively formed on the front and rear sides of the insulator (72) to increase the creepage distance between the armature (73) and the movable spring (71).

19. The relay according to claim 16, wherein: The movable reed (71) comprises: a sheet-like body (710); and A plurality of bending wings (711) are connected to one end of the sheet-like body (710) and are bent vertically relative to the sheet-like body (710). One end of the sheet-like body (710) and the plurality of bent wings (711) are engaged with the insulator (72) to increase the engagement force between the movable spring (71) and the insulator (72).

20. The relay according to claim 1, wherein: The armature (73) comprises: Plate body (730); and The bending portion (731) is connected to one end of the plate-shaped body (730) and is bent vertically relative to the plate-shaped body (730). The bent portion (731) is engaged with the insulator (72), and the plate-shaped body (730) is adapted to be movably mounted on the yoke (75).

21. The relay according to claim 20, characterized in that Also includes: A reset spring (74) is fixed to the yoke (75) and pressed on the armature (73) to reset the armature (73) from the attracted position to the initial position. The magnetic core (76) and the reset spring (74) are respectively arranged on both sides of the yoke (75); the magnetic core (76) is used to apply electromagnetic attraction to the armature (73); and the reset spring (74) is used to apply elastic reset force to the armature (73).

22. The relay according to claim 21, characterized in that: The yoke (75) comprises: a vertical plate (750) having a notch (753) formed at an upper end thereof; and The horizontal plate (751) is connected to the lower end of the vertical plate (750), A neck portion (73a) is formed on a plate-shaped body (730) of the armature (73), and the neck portion (73a) is movably engaged in a recess (753) of the yoke (75).

23. The relay according to claim 22, characterized in that: The resetting spring (74) comprises: A vertical spring piece (740) is fixed to the vertical plate (750) of the yoke (75); and The pressing spring (741) is connected to the upper end of the vertical spring (740) and is bent at a predetermined angle relative to the vertical spring (740). A mounting opening (73b) is formed on one end of the plate-shaped main body (730) of the armature (73) to allow the vertical spring piece (740) to pass through, and the pressing spring piece (741) presses on one side of the mounting opening (73b) of the armature (73) to apply an elastic restoring force to the armature (73).

24. The relay according to claim 23, characterized in that: A clamping groove (75a) is formed on the vertical plate (750) of the yoke (75), and an elastic buckle (74a) is formed on the vertical elastic piece (740) of the reset elastic piece (74). The elastic buckle (74a) is engaged in the clamping groove (75a) to fix the reset elastic piece (74) to the yoke (75).

25. The relay according to claim 23, wherein: A vertical slot (13a) is formed on one side of the vertical plate (750) of the partition wall (13) of the insulating base (1) facing the yoke (75), and the vertical spring piece (740) of the reset spring piece (74) is inserted into the vertical slot (13a) of the partition wall (13).

26. The relay according to claim 23, characterized in that: The resetting spring (74) further comprises: A limiting spring piece (742) is connected to the upper end of the vertical spring piece (740) and is located above the other side of the mounting opening (73b) of the armature (73). The limiting spring piece (742) is used to constrain the neck (73a) of the armature (73) in the recess (753) of the yoke (75) to prevent the armature (73) from being separated from the yoke (75).

27. The relay according to claim 16, wherein: Also includes: Coil assembly, comprising: A coil bobbin (78) having a central through hole; a coil (77) wound on the coil bobbin (78); and Two coil terminals (77a) are fixed to the coil frame (78) and connected to the two ends of the coil (77) respectively. The magnetic core (76) is installed in the central through hole of the coil frame (78), and the upper end of the magnetic core (76) is exposed from the coil frame (78) to absorb the armature (73).

28. The relay according to claim 26, wherein: When the coil (77) is energized, the armature (73) is attracted to the attracted position under the action of the electromagnetic attraction of the magnetic core (76), and the two movable contacts (4a) are moved to a closed position in electrical contact with the two stationary contacts (5a) respectively; When the coil (77) loses power, the electromagnetic attraction force applied to the armature (73) disappears, and the armature (73) is reset to the initial position under the action of the elastic reset force of the reset spring (74), and the two moving contacts (4a) are moved to a disconnected position separated from the two static contacts (5a).

29. The relay according to claim 11, wherein: The peripheral wall (11) of the insulating base (1) is inserted into the shell (2) through the bottom opening of the shell (2); a protrusion (1a) is formed on the outer side of the peripheral wall (11) of the insulating base (1); a slot (2a) is formed on the peripheral wall of the shell (2); the protrusion (1a) engages with the slot (2a) to fix the shell (2) to the insulating base (1).

30. The relay according to claim 11, wherein: A positioning step (1b) is formed on the outer side of the peripheral wall (11) of the insulating base (1), and the positioning step (1b) abuts against the bottom end surface (2b) of the shell (2) to position the shell (2) in the height direction (Z) of the insulating base (1).

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