Insulating base and relay

Abstract

The utility model 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 utility model, 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 utility model relates to an insulating base of a relay and a relay comprising the insulating base. Background Art

[0002] In the prior art, an electromagnetic relay generally includes an insulating base, a moving contact, a stationary contact and a moving reed. The insulating base includes a peripheral wall, a bottom wall and a partition wall. The partition wall divides the space in the insulating base into a receiving chamber and an arc extinguishing chamber. The moving contact, the stationary contact and the moving reed are arranged in the arc extinguishing chamber. The moving contact is fixed to the end of the moving reed. In order to increase the length of the moving reed, the end of the moving reed is usually made close to the bottom wall of the insulating base, which causes the distance between the moving contact and the bottom wall of the insulating base to be too short. When the arc is extinguished by magnetic blowout, the length of the arc between the moving contact and the stationary contact is limited, and it is difficult to be stretched to a predetermined length, which will reduce the effect of the magnetic blowout arc extinguishing and even cause arc extinguishing failure. Once the arc cannot be extinguished quickly, the moving contact and the stationary contact will be melted by the high temperature generated by the arc, and even cause the electromagnetic relay to explode, seriously affecting production safety.

[0003] In addition, in the prior art, the relay also includes a yoke, an armature, an insulator and a connecting piece. The armature is movably mounted on the yoke and can swing between an attracted position and an initial position relative to the yoke. One end of the armature is engaged in the insulator. One end of the connecting piece is engaged to the insulator. The insulator electrically isolates 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 an increase in cost. Moreover, riveting the movable spring and the connecting piece reduces production efficiency.

[0004] In addition, in the prior art, the relay also includes a reset spring for resetting the armature from the energized 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 very poor. When the reset spring moves frequently, the partition wall of the insulating base is easily broken or worn. The plastic dust generated by wear will affect the electrical contact performance between the moving contact and the static contact. Utility Model Content

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

[0006] According to one aspect of the utility model, an insulating base is provided. The insulating base is used to be installed in the bottom opening of the housing of a relay. The insulating base includes: a peripheral wall; a bottom wall connected to the bottom of the peripheral wall; and a partition wall connected to the peripheral wall and the bottom wall. The partition wall is used to separate the internal space defined by the housing and the insulating base into a receiving chamber and an arc extinguishing chamber. Two grooves are formed on the inner side of the bottom wall of the arc extinguishing chamber, so that the arc between a static contact and a moving contact of the relay can be pulled down into the groove to increase the length of the arc being pulled down.

[0007] According to an exemplary embodiment of the utility model, 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 utility model, the insulating base further includes two magnet holding parts, which are formed in the arc extinguishing chamber and are used to hold two arc extinguishing magnets of the relay. The two magnet holding parts are opposite in the lateral direction, and the two grooves are located between the two magnet holding parts.

[0009] According to another exemplary embodiment of the utility model, the magnet holding portion is connected to the bottom wall and the partition wall, and slots for inserting the arc extinguishing magnets are respectively formed in the two magnet holding portions, and the two arc extinguishing magnets of the relay are suitable for being respectively inserted into the slots of the two magnet holding portions.

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

[0011] According to another exemplary embodiment of the present utility model, the inner wall surface of the slot is suitable for interference fit with the arc-extinguishing magnet to fix the arc-extinguishing magnet in the slot.

[0012] According to another exemplary embodiment of the utility model, the inner wall surface of the slot is gap-matched with the arc-extinguishing magnet, and sealant is poured 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 utility model, the insulating base also includes two terminal retaining portions, which are formed in the arc extinguishing chamber and are used to retain two static terminals of the relay. The two terminal retaining portions are arranged side by side in the transverse direction and are spaced opposite to the partition wall.

[0014] According to another exemplary embodiment of the utility model, the terminal retaining portion is connected to the peripheral wall and the bottom wall, and terminal grooves for inserting the static terminals are respectively formed in the two terminal retaining portions, and the two static terminals of the relay are suitable for being respectively inserted into the terminal grooves of the two terminal retaining portions.

[0015] According to another exemplary embodiment of the present utility model, an opening communicating with the terminal groove is formed on the bottom wall to allow a portion of the static terminal to extend from the insulating base through the opening on the bottom wall.

[0016] According to another aspect of the utility model, a relay is provided. The relay comprises: a housing formed with a bottom opening; the aforementioned insulating base, which is installed in the bottom opening of the housing; two static contacts, which are located in the arc extinguishing chamber; two moving contacts, which are located in the arc extinguishing chamber and are used to make electrical contact with the two static contacts respectively; and two arc extinguishing magnets, which are located in the arc extinguishing chamber and are used to extinguish the arc between the static contacts and the moving contacts in a magnetic blowing manner. The two grooves on the bottom wall of the arc extinguishing chamber are respectively located below the two moving contacts and between the two arc extinguishing magnets, so that the arc between a static contact and a moving contact of the relay can be pulled down into the grooves by the magnetic field between the two arc extinguishing magnets.

[0017] According to another exemplary embodiment of the utility model, the arc extinguishing magnet is inserted into the slot of the magnet retaining portion of the insulating base, and sealant is poured into the insertion port of the slot to seal the insertion port of the slot and retain the arc extinguishing magnet in the slot.

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

[0019] According to another exemplary embodiment of the utility model, the relay also includes two static terminals, which are respectively inserted into the terminal grooves of the two terminal retaining parts of the insulating base and extend from the bottom wall of the insulating base, and the two static contacts are respectively fixed to the two static terminals to be electrically connected to the two static terminals respectively.

[0020] According to another exemplary embodiment of the utility model, the relay further comprises a moving terminal, the moving terminal being located in the arc extinguishing chamber. The two moving contacts are respectively fixed to both ends of the moving terminal to be electrically connected to the moving terminal. When the two moving contacts are moved to a closed position where they are electrically contacted with the two static contacts, the two static terminals are electrically connected together via the moving terminal.

[0021] According to another exemplary embodiment of the utility model, the relay further includes: a yoke, which is arranged in the accommodation chamber and fixed to the insulating base of the relay; a magnetic core, which is arranged in the accommodation chamber and whose lower end is fixed to the yoke; and an armature assembly. The armature assembly includes: an armature, which is movably mounted on the yoke and can swing between an initial position and an attraction position relative to the yoke; a moving reed, which is suitable for being connected to the moving terminal and is used to apply an elastic contact force to the moving contact; and an insulator, to which the armature and the moving reed are fixed and electrically isolated by the insulator.

[0022] According to another exemplary embodiment of the present invention, the insulator is an injection-molded part that is directly formed on the armature and the movable spring piece by an insert injection molding process, so that the armature, the movable spring piece and the insulator become an integral part.

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

[0024] According to another exemplary embodiment of the utility model, the movable spring includes: a sheet-like body; and a plurality of bent wings connected to one end of the sheet-like body and bent vertically relative to the sheet-like body, and one end of the sheet-like body and the plurality of bent wings are joined to the insulator to increase the joining force between the movable spring and the insulator.

[0025] According to another exemplary embodiment of the utility model, the armature includes: a plate-shaped body; and a bending portion, which is connected to one end of the plate-shaped body and bent vertically relative to the plate-shaped body, the bending portion is engaged in the insulator, and the plate-shaped body is suitable for being movably mounted on the yoke.

[0026] According to another exemplary embodiment of the utility model, the relay also includes a reset spring piece, which is fixed to the yoke and pressed on the armature, and is used to reset the armature from the attracted position to the initial position, and the magnetic core and the reset spring piece are respectively arranged on both sides of the yoke, the magnetic core is used to apply electromagnetic attraction to the armature, and the reset spring piece is used to apply elastic reset force to the armature.

[0027] According to another exemplary embodiment of the utility model, the yoke includes: a vertical plate, a notch is formed at the upper end of the vertical plate; and a horizontal plate connected to the lower end of the vertical plate, a neck is formed on the plate-like body of the armature, and the neck is movably engaged in the notch of the yoke.

[0028] According to another exemplary embodiment of the utility model, the reset spring piece includes: a vertical spring piece, which is fixed to the vertical plate of the yoke; and a pressing spring piece, which is connected to the upper end of the vertical spring piece and is bent at a predetermined angle relative to the vertical spring piece, and a mounting opening allowing the vertical spring piece to pass through is formed at one end of the plate-like body of the armature, and the pressing spring piece is pressed on one side of the mounting opening of the armature to apply an elastic reset force to the armature.

[0029] According to another exemplary embodiment of the utility model, a slot is formed on the vertical plate of the yoke, and an elastic buckle is formed on the vertical spring piece of the reset spring piece, and the elastic buckle is engaged in the slot to fix the reset spring piece to the yoke.

[0030] According to another exemplary embodiment of the utility model, a vertical slot is formed on a side of the partition wall of the insulating base facing the vertical plate of the yoke, and the vertical spring piece of the reset spring piece is inserted into the vertical slot of the partition wall.

[0031] According to another exemplary embodiment of the utility model, the reset spring also includes a limiting spring, which is connected to the upper end of the vertical spring and is located above the other side of the mounting opening of the armature, and the limiting spring is used to constrain the neck of the armature in the recess of the yoke to prevent the armature from detaching from the yoke.

[0032] According to another exemplary embodiment of the utility model, the relay further includes a coil assembly. The coil assembly includes: a coil frame having a central through hole; a coil wound on the coil frame; and two coil terminals fixed to the coil frame and connected to two ends of the coil respectively, the magnetic core is installed in the central through hole of the coil frame, and the upper end of the magnetic core is exposed from the coil frame to absorb the armature.

[0033] According to another exemplary embodiment of the utility model, when the coil is energized, the armature is adsorbed to the attracted position under the action of the electromagnetic attraction of the magnetic core, and the two moving contacts are moved to a closed position in electrical contact with the two static contacts respectively; when the coil is de-energized, the electromagnetic attraction applied to the armature disappears, the armature is reset to the initial position under the action of the elastic reset force of the reset spring, and the two moving contacts are moved to a disconnected position separated from the two static contacts respectively.

[0034] According to another exemplary embodiment of the utility model, the peripheral wall of the insulating base is inserted into the shell through the bottom opening of the shell, a protrusion is formed on the outer side of the peripheral wall of the insulating base, and a slot is formed on the peripheral wall of the shell, and the protrusion engages with the slot to fix the shell to the insulating base.

[0035] According to another exemplary embodiment of the utility model, a positioning step is formed on the outer side of the peripheral wall of the insulating base, and the positioning step abuts against the bottom end surface of the shell to position the shell in the height direction of the insulating base.

[0036] In the aforementioned exemplary embodiments of the utility model, the arc between a moving contact and a stationary contact of the relay can be pulled down into the groove on the bottom wall of the arc extinguishing chamber by the magnetic field between the two arc extinguishing magnets. Therefore, the length by which the arc is pulled down can be increased, so that the arc can be extinguished quickly, thereby greatly improving the magnetic blow-out arc extinguishing effect of the relay.

[0037] In some of the aforementioned exemplary embodiments of the present invention, the movable reed is directly engaged with the insulator, which reduces the number of components of the relay, simplifies the structure of the relay, reduces the cost of the relay, and improves the manufacturing efficiency of the relay.

[0038] In some of the above exemplary embodiments of the present invention, the reset spring is fixed to the yoke. Therefore, when the reset spring moves frequently, the insulating base is not affected and will not be broken or worn, thereby improving the service life and reliability of the relay.

[0039] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A three-dimensional schematic diagram showing a relay according to an exemplary embodiment of the utility model;

[0041] Figure 2 A transverse cross-sectional view showing a relay according to an exemplary embodiment of the present utility model;

[0042] Figure 3 A longitudinal cross-sectional view showing a relay insulation base and a housing according to an exemplary embodiment of the utility model;

[0043] Figure 4 A transverse cross-sectional view of a relay according to an exemplary embodiment of the present utility model is shown, wherein a housing is not shown;

[0044] Figure 5 A longitudinal cross-sectional view showing a relay according to an exemplary embodiment of the present utility model, wherein a housing is not shown;

[0045] Figure 6 A plan cross-sectional view of a relay according to an exemplary embodiment of the present utility model is shown, wherein the moving contact and the stationary contact are in an electrically separated disconnected position;

[0046] Figure 7 A plan cross-sectional view showing a relay according to an exemplary embodiment of the present utility model, wherein the movable contact and the stationary contact are in a closed position of electrical contact;

[0047] Figure 8 A three-dimensional schematic diagram showing a relay module according to an exemplary embodiment of the utility model;

[0048] Fig. 9 A cross-sectional view showing a relay module according to an exemplary embodiment of the present utility model;

[0049] Fig.10 An exploded schematic diagram showing a relay module according to an exemplary embodiment of the present utility model;

[0050] Fig.11 An exploded cross-sectional view showing a relay module according to an exemplary embodiment of the present utility model;

[0051] Fig.12 An exploded schematic diagram showing a relay armature assembly according to an exemplary embodiment of the present utility model;

[0052] Fig.13 A schematic diagram showing an assembly of a yoke and a reset spring of a relay according to an exemplary embodiment of the utility model;

[0053] Fig.14 A three-dimensional schematic diagram showing a reset spring of a relay according to an exemplary embodiment of the utility model;

[0054] Fig.15 A cross-sectional view showing a reset spring of a relay according to an exemplary embodiment of the utility model;

[0055] Fig.16 A cross-sectional view showing a yoke and a reset spring of a relay according to an exemplary embodiment of the utility model;

[0056] Fig.17 A cross-sectional view showing a yoke, a reset spring and an insulating base of a relay according to an exemplary embodiment of the present utility model. DETAILED DESCRIPTION

[0057] The technical solution of the utility model is further specifically described below through examples and in combination with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the implementation mode of the utility model with reference to the accompanying drawings is intended to explain the overall utility model concept of the utility model, and should not be understood as a limitation of the utility model.

[0058] In addition, in the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0059] According to an overall technical concept of the utility model, an insulating base is provided. The insulating base is used to be installed in the bottom opening of the housing of a relay. The insulating base includes: a peripheral wall; a bottom wall connected to the bottom of the peripheral wall; and a partition wall connected to the peripheral wall and the bottom wall. The partition wall is used to separate the internal space defined by the housing and the insulating base into a receiving chamber and an arc extinguishing chamber. Two grooves are formed on the inner side of the bottom wall of the arc extinguishing chamber, so that the arc between a static contact and a moving contact of the relay can be pulled down into the groove to increase the length of the arc being pulled down.

[0060] According to another general technical concept of the utility model, a relay is provided. The relay comprises: a housing formed with a bottom opening; the aforementioned insulating base, which is installed in the bottom opening of the housing; two static contacts, which are located in the arc extinguishing chamber; two moving contacts, which are located in the arc extinguishing chamber and are used to make electrical contact with the two static contacts respectively; and two arc extinguishing magnets, which are located in the arc extinguishing chamber and are used to extinguish the arc between the static contacts and the moving contacts in a magnetic blowing manner. The two grooves on the bottom wall of the arc extinguishing chamber are respectively located below the two moving contacts and between the two arc extinguishing magnets, so that the arc between a static contact and a moving contact of the relay can be pulled down into the grooves by the magnetic field between the two arc extinguishing magnets.

[0061] According to another general technical concept of the utility model, a relay armature assembly is provided. The relay armature assembly comprises: an armature adapted to be movably mounted on a yoke of a relay and capable of swinging between an initial position and an attracted position relative to the yoke; a movable spring adapted to be connected to a movable contact assembly of the relay and used to apply an elastic contact force to the movable contact assembly; and an insulator to which the armature and the movable spring are fixed and electrically isolated.

[0062] According to another general technical concept of the utility model, a relay module is provided. The relay module includes: a yoke fixed to the insulating base of the relay; a magnetic core, the lower end of which is fixed to the yoke; the aforementioned relay armature assembly, the armature of which is movably mounted on the yoke and can swing between an attracted position in contact with the upper end of the magnetic core and an initial position separated from the upper end of the magnetic core; and a reset spring, which is fixed to the yoke and pressed on the armature, and is used to reset the armature from the attracted position to the initial position, the magnetic core and the reset spring are respectively arranged on both sides of the yoke, the magnetic core is used to apply electromagnetic attraction to the armature, and the reset spring is used to apply elastic reset force to the armature.

[0063] According to another general technical concept of the utility model, a relay is provided, comprising: a housing having a bottom opening; the aforementioned relay module disposed in the housing; an insulating base mounted in the bottom opening of the housing; and two stationary contact assemblies fixed in the insulating base for electrical contact with the moving contact assembly.

[0064] Figure 1 A three-dimensional schematic diagram showing a relay according to an exemplary embodiment of the utility model; Figure 2 A transverse cross-sectional view showing a relay according to an exemplary embodiment of the present utility model; Figure 3 A longitudinal cross-sectional view showing a relay insulation base 1 and a housing 2 according to an exemplary embodiment of the present utility model; Figure 4 A transverse cross-sectional view of a relay according to an exemplary embodiment of the present utility model is shown, wherein the housing 2 is not shown; Figure 5 A longitudinal cross-sectional view of a relay according to an exemplary embodiment of the present utility model is shown, wherein the housing 2 is not shown; Figure 6 A plan cross-sectional view of a relay according to an exemplary embodiment of the present utility model is shown, wherein the moving contact 4a and the stationary contact 5a are in an electrically separated disconnected position; Figure 7 A plan cross-sectional view of a relay according to an exemplary embodiment of the present invention is shown, wherein the moving contact 4 a and the stationary contact 5 a are in a closed position of electrical contact.

[0065] like Figures 1 to 7As shown, in an exemplary embodiment of the utility model, an insulating base 1 is disclosed. The insulating base 1 is used to be installed in the bottom opening of the housing 2 of the 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 divide 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 moving contact 4a of the relay can be pulled down into the groove 101 to increase the length of the arc 1c being pulled down.

[0066] like Figures 1 to 7 As shown, in the illustrated embodiment, the arc 1c between a moving contact 4a and a stationary contact 5a of the relay can be pulled down into the groove 101 on the bottom wall 12 of the arc extinguishing chamber 10b by the magnetic field between the two arc extinguishing magnets 6, thereby increasing the length of the arc 1c pulled down, so that the arc 1c can be quickly extinguished, greatly improving the magnetic blowout arc extinguishing effect of the relay. In addition, the arc between the other stationary contact 5a and the other moving contact 4a of the relay is stretched upward by the magnetic field between the two arc extinguishing magnets 6, and since the upward stretching space is larger, the upward stretching arc can also be quickly extinguished.

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

[0068] like Figures 1 to 7 As shown, in the illustrated embodiment, the insulating base 1 further includes two magnet holding portions 14. The 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 in the transverse direction X, and the two grooves 101 are located between the two magnet holding 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 located 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 14a is suitable for interference fit with the arc-extinguishing magnet 6 to fix the arc-extinguishing magnet 6 in the slot 14a.

[0072] like Figures 1 to 7 As shown, in another exemplary embodiment of the utility model, 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 holding portions 15. The 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 opposite to the partition wall 13.

[0074] like Figures 1 to 7 As shown, in the illustrated embodiment, the terminal retaining 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 retaining 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 retaining 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 three-dimensional schematic diagram showing a relay module according to an exemplary embodiment of the utility model; Fig. 9 A cross-sectional view showing a relay module according to an exemplary embodiment of the present utility model; Fig.10 An exploded schematic diagram showing a relay module according to an exemplary embodiment of the present utility model; Fig.11 An exploded cross-sectional view showing a relay module according to an exemplary embodiment of the present utility model; Fig.12 An exploded schematic diagram showing a relay armature assembly according to an exemplary embodiment of the present utility model; Fig.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 utility model; Fig.14 A three-dimensional schematic diagram showing a reset spring 74 of a relay according to an exemplary embodiment of the utility model; Fig.15 A cross-sectional view showing a reset spring 74 of a relay according to an exemplary embodiment of the present utility model; Fig.16 A cross-sectional view showing a yoke 75 and a reset spring 75 of a relay according to an exemplary embodiment of the present utility model; Fig.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 utility model.

[0077] like Figures 1 to 17 As shown, in another exemplary embodiment of the utility model, a relay is also disclosed, which can be a DC electromagnetic relay. The relay includes: a housing 2, an insulating base 1, two static contacts 5a, two moving contacts 4a and two arc-extinguishing magnets 6. The housing 2 is formed with a bottom opening. The insulating base 1 is installed in the bottom opening of the housing 2. The two static contacts 5a are located in the arc-extinguishing chamber 10b. The two moving contacts 4a are located in the arc-extinguishing chamber 10b, and are used to make electrical contact with the two static contacts 5a respectively. The two arc-extinguishing magnets 6 are located in the arc-extinguishing chamber 10b, and are used to extinguish the arc 1c between the static contacts 5a and the moving contacts 4a in a magnetic blowing manner. The 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 a static contact 5a and a moving contact 4a of the relay can be pulled down into the groove 101 by the magnetic field between the two arc-extinguishing magnets 6. Therefore, the length of the arc 1c pulled down can be increased, so that the arc 1c can be extinguished quickly, greatly improving the magnetic blowout arc extinguishing effect of the relay. In addition, the arc between the other static 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 the space for stretching upward is larger, the arc stretched upward 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 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.

[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 grooves 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 to the two static terminals 5.

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

[0082] like Figures 1 to 17 As shown, in the illustrated embodiment, the relay further includes: a magnetic core 7, 6 yoke 75 and an armature assembly. The magnetic core 76 is arranged in the accommodating chamber 10a. The yoke 75 is arranged in the accommodating chamber 10a and fixed to the magnetic core 76. The armature assembly includes: an armature 73, a movable reed 71 and an insulator 72. The armature 73 is movably mounted on the yoke 75 and can swing between an initial position and an attraction position relative to the yoke 75. The movable reed 71 is suitable for being connected to the moving terminal 4 for applying an elastic contact force to the moving contact 4a. The armature 73 and the movable reed 71 are fixed to the insulator 72 and are electrically isolated by the insulator 72.

[0083] 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 by an insert injection molding process, so that the armature 73, the movable reed 71 and the insulator 72 become an integral part.

[0084] like Figures 1 to 17 As shown, in the illustrated embodiment, the armature 73 and the movable spring piece 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 piece 71.

[0085] like Figures 1 to 17 As shown, in the illustrated embodiment, the movable spring piece 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 vertically 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 piece 71 and the insulator 72.

[0086] like Figures 1 to 17 As 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 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 suitable for being movably mounted on the yoke 75.

[0087] like Figures 1 to 17As shown, in the illustrated embodiment, the relay further includes a reset spring 74. The reset spring 74 is fixed to the yoke 75 and pressed on the armature 73, and is used 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.

[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 piece 74 includes: a vertical spring piece 740 and a pressing spring piece 741. The vertical spring piece 740 is fixed to the vertical plate 750 of the yoke 75. The pressing spring piece 741 is connected to the upper end of the vertical spring piece 740 and is bent at a predetermined angle relative to the vertical spring piece 740. A mounting opening 73b for allowing the vertical spring piece 740 to pass through is formed at one end of the plate-shaped body 730 of the armature 73, and the pressing spring piece 741 is pressed 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 piece 74 further includes a limiting spring piece 742, which 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 notch 753 of the yoke 75 to prevent the armature 73 from being separated 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 skeleton 78, a coil 77 and two coil terminals 77a. The coil skeleton 78 has a central through hole. The coil 77 is wound on the coil skeleton 78. The two coil terminals 77a are fixed to the coil skeleton 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 skeleton 78, and the upper end of the magnetic core 76 is exposed from the coil skeleton 78 to adsorb the armature 73.

[0095] like Figures 1 to 17 As shown, in the embodiment shown in the figure, when the coil 77 is energized, the armature 73 is attracted to the pull-in position under the action of the electromagnetic attraction of the magnetic core 76, and the two movable contacts 4a are moved to the closed position where they are electrically contacted 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 the initial position under the action of the elastic reset force of the reset spring 74, and the two movable contacts 4a are moved to the disconnected 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 1 b is formed on the outer side of the peripheral wall 11 of the insulating base 1 , and the positioning step 1 b abuts against the bottom end surface 2 b 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 utility model, 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 suitable for being movably mounted on a yoke 75 of a relay, and can swing between an initial position and a closed position relative to the yoke 75. The movable spring 71 is suitable for being connected to a moving contact assembly of a relay, and is used to apply an elastic contact force to the moving contact assembly. The armature 73 and the movable spring 71 are fixed to the insulator 72 and are electrically isolated 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 by 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 piece 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 piece 71.

[0101] like Figures 1 to 17 As shown, in the illustrated embodiment, the movable spring piece 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 vertically 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 piece 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 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-like body 730 and a bent portion 731. The bent portion 731 is connected to one end of the plate-like body 730 and is bent vertically relative to the plate-like body 730. The bent portion 731 is engaged with the insulator 72, and the plate-like body 730 is suitable for being movably mounted on the yoke 75. A through hole engaged with the insulator 72 is formed on the bent portion 731 to further increase 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 utility model, 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, and is used 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 piece 74 includes: a vertical spring piece 740 and a pressing spring piece 741. The vertical spring piece 740 is fixed to the vertical plate 750 of the yoke 75. The pressing spring piece 741 is connected to the upper end of the vertical spring piece 740 and is bent at a predetermined angle relative to the vertical spring piece 740. A mounting opening 73b for allowing the vertical spring piece 740 to pass through is formed at one end of the plate-shaped body 730 of the armature 73, and the pressing spring piece 741 is pressed on one side of the mounting opening 73b of the armature 73 to apply an elastic reset force to the armature 73.

[0109] 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.

[0110] like Figures 1 to 17 As shown, in the illustrated embodiment, the reset spring piece 74 further includes a limiting spring piece 742, which 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 notch 753 of the yoke 75 to prevent the armature 73 from being separated from the yoke 75.

[0111] like Figures 1 to 17 As shown, in the illustrated embodiment, the relay module further includes a coil assembly. The coil assembly includes: a coil skeleton 78, a coil 77 and two coil terminals 77a. The coil skeleton 78 has a central through hole. The coil 77 is wound on the coil skeleton 78. The two coil terminals 77a are fixed to the coil skeleton 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 skeleton 78, and the upper end of the magnetic core 76 is exposed from the coil skeleton 78 to adsorb the armature 73.

[0112] like Figures 1 to 17 As shown, in another exemplary embodiment of the utility model, a relay is also disclosed. The relay comprises: a housing 2, a relay module, an insulating base 1 and two stationary contact assemblies. The housing 2 has a bottom opening. The relay module is arranged in the housing 2. The insulating base 1 is installed in the bottom opening of the housing 2. The two stationary contact assemblies are fixed to the insulating base 1 for electrical contact with the moving contact assembly.

[0113] like Figures 1 to 17 As shown, in the illustrated embodiment, the moving contact assembly includes: a moving terminal 4 and two moving contacts 4a. The moving terminal 4 is fixed to the moving spring 71. The two moving contacts 4a are respectively fixed to the two ends of the moving terminal 4. The stationary contact assembly includes: a stationary terminal 5 and a stationary contact 5a. The stationary terminal 5 is fixed to the insulating base 1. The stationary contact 5a is fixed to the stationary terminal 5. The two moving contacts 4a are used to electrically contact with the stationary contacts 5a of the two stationary contact assemblies, respectively, to electrically connect the stationary terminals 5 of the two stationary contact assemblies.

[0114] like Figures 1 to 17As shown, in the illustrated embodiment, when the armature 73 is attracted to the pull-in 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 disconnected 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 internal 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 the yoke 75 are arranged in the receiving chamber 10a, and the moving contact assembly and the static contact assembly are arranged in the arc extinguishing chamber 10b.

[0116] like Figures 1 to 17 As shown, in the illustrated embodiment, the relay further comprises two arc extinguishing magnets 6, which are arranged in 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, and the two grooves 101 are respectively located below the two moving contacts 4a and between the two arc extinguishing magnets 6, so that the arc 1c between a stationary contact 5a and a moving contact 4a of the relay can be pulled down into the grooves 101 by the magnetic field between the two arc extinguishing magnets 6, so as to increase the length of the arc 1c being pulled down.

[0117] like Figures 1 to 17 As shown, in the illustrated embodiment, the insulating base 1 further includes two magnet holding parts 14, and the two magnet holding parts 14 are formed in the arc extinguishing chamber 10b. A slot 14a is formed in the magnet holding part 14, and the two arc extinguishing magnets 6 are respectively inserted into the slots 14a of the two magnet holding parts 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 illustrated embodiment, the insulating base 1 further includes two terminal holding portions 15, and the two terminal holding portions 15 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 through 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, and a slot 2a is formed on the peripheral wall of the housing 2, and the protrusion 1a is engaged with the slot 2a to fix the housing 2 to the relay insulating base 1.

[0121] 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.

[0122] Those skilled in the art will appreciate that the embodiments described above are exemplary and can be improved upon by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle, and these changes should fall within the scope of protection of the present utility model.

[0123] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to exemplify the preferred implementation modes of the present invention and should not be construed as limiting the present invention.

[0124] Although some embodiments of the general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined by the claims and their equivalents.

[0125] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element number of the claims should not be construed as limiting the scope of the present invention.

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 stationary 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) being pulled down.

2. The insulating base according to claim 1, characterized in that: 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, characterized in that: Also includes: Two magnet holding parts (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, characterized in that: 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 inserted into the slots (14a) of the two magnet holding portions (14), respectively.

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) so as 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 2, characterized in that: 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 grooves (15a) for inserting the static terminals (5) are respectively formed in the two terminal holding portions (15), and the two static terminals (5) of the relay are suitable for being inserted into the terminal grooves (15a) of the two terminal holding portions (15), respectively.

10. The insulating base according to claim 9, characterized in that: An opening is formed on the bottom wall (12) and communicates with the terminal groove (15a), so as 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) 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 stationary contacts (5a) are located in the arc extinguishing chamber (10b); Two moving contacts (4a), located in the arc extinguishing chamber (10b), and used for respectively making electrical contact with the two stationary contacts (5a); 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) by magnetic blowing. 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 stationary 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 retaining 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, characterized in that: 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, characterized in that: 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 out from the bottom wall (12) of the insulating base (1). The two static contacts (5a) are respectively fixed to the two static terminals (5) so as to be electrically connected to the two static terminals (5) respectively.

15. The relay according to claim 11, characterized in that: Also includes: A movable terminal (4) is located in the arc extinguishing chamber (10b), The two moving contacts (4a) are respectively fixed to the two ends of the moving terminal (4) to be electrically connected to the moving terminal (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) is 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 between an initial position and an engaged position relative to the yoke (75); a movable spring (71), adapted to be connected to the movable terminal (4) and used to apply an 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) form an integrated part.

18. The relay according to claim 16, characterized in that: 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 convex 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, characterized in that: 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 sheet (71) and the insulator (72).

20. The relay according to claim 16, characterized in that: The armature (73) comprises: Plate body (730); and A 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 in the insulator (72), and the plate-shaped body (730) is suitable for being 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 piece (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 piece (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 of the vertical plate (750); and A 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 sheet (740) fixed to the vertical plate (750) of the yoke (75); and The pressing spring sheet (741) is connected to the upper end of the vertical spring sheet (740) and is bent at a predetermined angle relative to the vertical spring sheet (740). A mounting opening (73b) allowing the vertical spring sheet (740) to pass through is formed at one end of the plate-shaped body (730) of the armature (73), and the pressing spring sheet (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 sheet (740) of the reset elastic sheet (74), and the elastic buckle (74a) is engaged in the clamping groove (75a) to fix the reset elastic sheet (74) to the yoke (75).

25. The relay according to claim 23, characterized in that: 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), the 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), and 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 21, characterized in that Also includes: Coil assembly, comprising: A coil frame (78) having a central through hole; A coil (77) wound on the coil frame (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 27, characterized in that: 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 moving contacts (4a) are moved to a closed position where they are 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, 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 stationary contacts (5a).

29. The relay according to claim 11, characterized in that: The peripheral wall (11) of the insulating base (1) is inserted into the outer shell (2) via the bottom opening of the outer 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 outer shell (2); the protrusion (1a) engages with the slot (2a) to fix the outer shell (2) to the insulating base (1).

30. The relay according to claim 11, characterized in that: 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).

Images